From f108aaf1f3fad7d519353aed0603dd0e90ab8fae Mon Sep 17 00:00:00 2001
From: Javier Honduvilla Coto <javierhonduco@gmail.com>
Date: Tue, 23 Jul 2024 10:40:24 +0100
Subject: [PATCH] Add facilities to produce pprof profiles (#53)

This (rather large) commit adds pprof profile generation to lightswitch.
They can be dumped to disk and the read with pprof tooling (see test
plan) as well as sent to a remote server with a new collector. By
default profiles are written to dis as flamegraphs in svg format.

Test Plan / Demo
================

build with: `nix develop --command 'cargo build --release'`

```
$ sudo target/release/lightswitch --duration=5
```

produces a flamegraph in svg format

```
$ sudo target/release/lightswitch --duration=5 --profile-format=pprof
```

produces a pprof file (uncompressed) that can be read with standard
tooling

```
$ go tool pprof profile.pb
For tag pid used unit task-tgid, also encountered unit(s) task-id
File: ruby
Build ID: gnu-bae4d9744266cf1f3e27a1ba7512c1c97b5e4a86
lightswitch
Type: cpu
Time: Jul 23, 2024 at 10:03am (BST)
Duration: 5s, Total samples = 1.70s (34.07%)
Entering interactive mode (type "help" for commands, "o" for options)
(pprof) top
For tag pid used unit task-tgid, also encountered unit(s) task-id
Showing nodes accounting for 703.70ms, 41.30% of 1703.70ms total
Showing top 10 nodes out of 140
      flat  flat%   sum%        cum   cum%
  111.11ms  6.52%  6.52%   148.15ms  8.70%  BSD_vfprintf
  111.11ms  6.52% 13.04%   259.26ms 15.22%  lightswitch::unwind_info::UnwindInfoBuilder::process
  111.11ms  6.52% 19.57%   222.22ms 13.04%  n_tty_inherit_ops
   74.07ms  4.35% 23.91%   111.11ms  6.52%  __memcpy_avx_unaligned_erms
   74.07ms  4.35% 28.26%   407.41ms 23.91%  do_syscall_64
   74.07ms  4.35% 32.61%    74.07ms  4.35%  queue_work_on
   37.04ms  2.17% 34.78%    37.04ms  2.17%  __GI___pthread_enable_asynccancel
   37.04ms  2.17% 36.96%   444.44ms 26.09%  __GI___writev
   37.04ms  2.17% 39.13%    37.04ms  2.17%  __malloc_usable_size
   37.04ms  2.17% 41.30%    37.04ms  2.17%  __probestub_page_fault_kernel
```

```
$ sudo target/release/lightswitch --duration=5 --sender=remote
```

Performs an HTTP POST with the pprof as the body to a hardcoded server
URL (this will change in the future).
---
 .gitignore                                 |    1 +
 Cargo.lock                                 | 1191 +++++++++++++++++---
 Cargo.toml                                 |    9 +
 flake.nix                                  |    4 +-
 lightswitch-proto/Cargo.toml               |   11 +
 lightswitch-proto/build.rs                 |    9 +
 lightswitch-proto/src/lib.rs               |    1 +
 lightswitch-proto/src/profile.rs           |  461 ++++++++
 lightswitch-proto/src/protos/profile.proto |  227 ++++
 src/collector.rs                           |  131 ++-
 src/main.rs                                |   73 +-
 src/object.rs                              |   19 +
 src/profile.rs                             |  117 +-
 src/profiler.rs                            |   30 +-
 tests/integration_test.rs                  |    7 +-
 vm.nix                                     |   12 +-
 16 files changed, 2113 insertions(+), 190 deletions(-)
 create mode 100644 lightswitch-proto/Cargo.toml
 create mode 100644 lightswitch-proto/build.rs
 create mode 100644 lightswitch-proto/src/lib.rs
 create mode 100644 lightswitch-proto/src/profile.rs
 create mode 100644 lightswitch-proto/src/protos/profile.proto

diff --git a/.gitignore b/.gitignore
index 1457c3a..4a960d0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,6 @@
 /target
 flame.svg
+profile.pb
 src/bpf/*_skel.rs
 .vmtest.log
 /result
\ No newline at end of file
diff --git a/Cargo.lock b/Cargo.lock
index 3020ebf..7924119 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2,6 +2,15 @@
 # It is not intended for manual editing.
 version = 3
 
+[[package]]
+name = "addr2line"
+version = "0.22.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6e4503c46a5c0c7844e948c9a4d6acd9f50cccb4de1c48eb9e291ea17470c678"
+dependencies = [
+ "gimli 0.29.0",
+]
+
 [[package]]
 name = "adler"
 version = "1.0.2"
@@ -81,7 +90,7 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ad186efb764318d35165f1758e7dcef3b10628e26d41a44bc5550652e6804391"
 dependencies = [
- "windows-sys",
+ "windows-sys 0.52.0",
 ]
 
 [[package]]
@@ -91,7 +100,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "61a38449feb7068f52bb06c12759005cf459ee52bb4adc1d5a7c4322d716fb19"
 dependencies = [
  "anstyle",
- "windows-sys",
+ "windows-sys 0.52.0",
 ]
 
 [[package]]
@@ -121,22 +130,49 @@ dependencies = [
  "wait-timeout",
 ]
 
+[[package]]
+name = "atomic-waker"
+version = "1.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1505bd5d3d116872e7271a6d4e16d81d0c8570876c8de68093a09ac269d8aac0"
+
 [[package]]
 name = "autocfg"
 version = "1.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0c4b4d0bd25bd0b74681c0ad21497610ce1b7c91b1022cd21c80c6fbdd9476b0"
 
+[[package]]
+name = "backtrace"
+version = "0.3.73"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5cc23269a4f8976d0a4d2e7109211a419fe30e8d88d677cd60b6bc79c5732e0a"
+dependencies = [
+ "addr2line",
+ "cc",
+ "cfg-if",
+ "libc",
+ "miniz_oxide",
+ "object",
+ "rustc-demangle",
+]
+
+[[package]]
+name = "base64"
+version = "0.22.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "72b3254f16251a8381aa12e40e3c4d2f0199f8c6508fbecb9d91f575e0fbb8c6"
+
 [[package]]
 name = "bindgen"
 version = "0.69.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a00dc851838a2120612785d195287475a3ac45514741da670b735818822129a0"
 dependencies = [
- "bitflags",
+ "bitflags 2.6.0",
  "cexpr",
  "clang-sys",
- "itertools",
+ "itertools 0.12.1",
  "lazy_static",
  "lazycell",
  "log",
@@ -146,15 +182,21 @@ dependencies = [
  "regex",
  "rustc-hash",
  "shlex",
- "syn 2.0.66",
+ "syn 2.0.72",
  "which",
 ]
 
 [[package]]
 name = "bitflags"
-version = "2.5.0"
+version = "1.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
+
+[[package]]
+name = "bitflags"
+version = "2.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cf4b9d6a944f767f8e5e0db018570623c85f3d925ac718db4e06d0187adb21c1"
+checksum = "b048fb63fd8b5923fc5aa7b340d8e156aec7ec02f0c78fa8a6ddc2613f6f71de"
 
 [[package]]
 name = "blazesym"
@@ -163,7 +205,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "519a0f9df086d6c4f44576558523a777c984454daeb124bee79bde69227360c4"
 dependencies = [
  "cpp_demangle",
- "gimli",
+ "gimli 0.30.0",
  "libc",
  "miniz_oxide",
  "rustc-demangle",
@@ -188,9 +230,9 @@ checksum = "79296716171880943b8470b5f8d03aa55eb2e645a4874bdbb28adb49162e012c"
 
 [[package]]
 name = "bytemuck"
-version = "1.16.0"
+version = "1.16.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "78834c15cb5d5efe3452d58b1e8ba890dd62d21907f867f383358198e56ebca5"
+checksum = "b236fc92302c97ed75b38da1f4917b5cdda4984745740f153a5d3059e48d725e"
 
 [[package]]
 name = "byteorder"
@@ -198,6 +240,12 @@ version = "1.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1fd0f2584146f6f2ef48085050886acf353beff7305ebd1ae69500e27c67f64b"
 
+[[package]]
+name = "bytes"
+version = "1.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a12916984aab3fa6e39d655a33e09c0071eb36d6ab3aea5c2d78551f1df6d952"
+
 [[package]]
 name = "camino"
 version = "1.1.7"
@@ -232,9 +280,9 @@ dependencies = [
 
 [[package]]
 name = "cc"
-version = "1.0.99"
+version = "1.1.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "96c51067fd44124faa7f870b4b1c969379ad32b2ba805aa959430ceaa384f695"
+checksum = "2aba8f4e9906c7ce3c73463f62a7f0c65183ada1a2d47e397cc8810827f9694f"
 
 [[package]]
 name = "cexpr"
@@ -274,7 +322,7 @@ dependencies = [
  "js-sys",
  "num-traits",
  "wasm-bindgen",
- "windows-targets",
+ "windows-targets 0.52.6",
 ]
 
 [[package]]
@@ -290,9 +338,9 @@ dependencies = [
 
 [[package]]
 name = "clap"
-version = "4.5.7"
+version = "4.5.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5db83dced34638ad474f39f250d7fea9598bdd239eaced1bdf45d597da0f433f"
+checksum = "64acc1846d54c1fe936a78dc189c34e28d3f5afc348403f28ecf53660b9b8462"
 dependencies = [
  "clap_builder",
  "clap_derive",
@@ -300,9 +348,9 @@ dependencies = [
 
 [[package]]
 name = "clap_builder"
-version = "4.5.7"
+version = "4.5.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f7e204572485eb3fbf28f871612191521df159bc3e15a9f5064c66dba3a8c05f"
+checksum = "6fb8393d67ba2e7bfaf28a23458e4e2b543cc73a99595511eb207fdb8aede942"
 dependencies = [
  "anstream",
  "anstyle",
@@ -312,14 +360,14 @@ dependencies = [
 
 [[package]]
 name = "clap_derive"
-version = "4.5.5"
+version = "4.5.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c780290ccf4fb26629baa7a1081e68ced113f1d3ec302fa5948f1c381ebf06c6"
+checksum = "2bac35c6dafb060fd4d275d9a4ffae97917c13a6327903a8be2153cd964f7085"
 dependencies = [
  "heck 0.5.0",
  "proc-macro2",
  "quote",
- "syn 2.0.66",
+ "syn 2.0.72",
 ]
 
 [[package]]
@@ -343,7 +391,17 @@ dependencies = [
  "encode_unicode",
  "lazy_static",
  "libc",
- "windows-sys",
+ "windows-sys 0.52.0",
+]
+
+[[package]]
+name = "core-foundation"
+version = "0.9.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "91e195e091a93c46f7102ec7818a2aa394e1e1771c3ab4825963fa03e45afb8f"
+dependencies = [
+ "core-foundation-sys",
+ "libc",
 ]
 
 [[package]]
@@ -387,11 +445,12 @@ checksum = "22ec99545bb0ed0ea7bb9b8e1e9122ea386ff8a48c0922e43f36d45ab09e0e80"
 
 [[package]]
 name = "dashmap"
-version = "5.5.3"
+version = "6.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "978747c1d849a7d2ee5e8adc0159961c48fb7e5db2f06af6723b80123bb53856"
+checksum = "804c8821570c3f8b70230c2ba75ffa5c0f9a4189b9a432b6656c536712acae28"
 dependencies = [
  "cfg-if",
+ "crossbeam-utils",
  "hashbrown",
  "lock_api",
  "once_cell",
@@ -404,17 +463,6 @@ version = "2.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e8566979429cf69b49a5c740c60791108e86440e8be149bbea4fe54d2c32d6e2"
 
-[[package]]
-name = "derive_more"
-version = "0.99.17"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4fb810d30a7c1953f91334de7244731fc3f3c10d7fe163338a35b9f640960321"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn 1.0.109",
-]
-
 [[package]]
 name = "difflib"
 version = "0.4.0"
@@ -429,9 +477,9 @@ checksum = "fea41bba32d969b513997752735605054bc0dfa92b4c56bf1189f2e174be7a10"
 
 [[package]]
 name = "either"
-version = "1.12.0"
+version = "1.13.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3dca9240753cf90908d7e4aac30f630662b02aebaa1b58a3cadabdb23385b58b"
+checksum = "60b1af1c220855b6ceac025d3f6ecdd2b7c4894bfe9cd9bda4fbb4bc7c0d4cf0"
 
 [[package]]
 name = "encode_unicode"
@@ -439,12 +487,31 @@ version = "0.3.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a357d28ed41a50f9c765dbfe56cbc04a64e53e5fc58ba79fbc34c10ef3df831f"
 
+[[package]]
+name = "encoding_rs"
+version = "0.8.34"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b45de904aa0b010bce2ab45264d0631681847fa7b6f2eaa7dab7619943bc4f59"
+dependencies = [
+ "cfg-if",
+]
+
+[[package]]
+name = "env_filter"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a009aa4810eb158359dda09d0c87378e4bbb89b5a801f016885a4707ba24f7ea"
+dependencies = [
+ "log",
+]
+
 [[package]]
 name = "env_logger"
-version = "0.10.2"
+version = "0.11.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4cd405aab171cb85d6735e5c8d9db038c17d3ca007a4d2c25f337935c3d90580"
+checksum = "38b35839ba51819680ba087cd351788c9a3c476841207e0b8cee0b04722343b9"
 dependencies = [
+ "env_filter",
  "log",
 ]
 
@@ -461,7 +528,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "534c5cf6194dfab3db3242765c03bbe257cf92f22b38f6bc0c58d59108a820ba"
 dependencies = [
  "libc",
- "windows-sys",
+ "windows-sys 0.52.0",
 ]
 
 [[package]]
@@ -476,6 +543,12 @@ version = "2.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9fc0510504f03c51ada170672ac806f1f105a88aa97a5281117e1ddc3368e51a"
 
+[[package]]
+name = "fixedbitset"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0ce7134b9999ecaf8bcd65542e436736ef32ddca1b3e06094cb6ec5755203b80"
+
 [[package]]
 name = "flate2"
 version = "1.0.30"
@@ -486,6 +559,36 @@ dependencies = [
  "miniz_oxide",
 ]
 
+[[package]]
+name = "fnv"
+version = "1.0.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3f9eec918d3f24069decb9af1554cad7c880e2da24a9afd88aca000531ab82c1"
+
+[[package]]
+name = "foreign-types"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f6f339eb8adc052cd2ca78910fda869aefa38d22d5cb648e6485e4d3fc06f3b1"
+dependencies = [
+ "foreign-types-shared",
+]
+
+[[package]]
+name = "foreign-types-shared"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "00b0228411908ca8685dba7fc2cdd70ec9990a6e753e89b6ac91a84c40fbaf4b"
+
+[[package]]
+name = "form_urlencoded"
+version = "1.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e13624c2627564efccf4934284bdd98cbaa14e79b0b5a141218e507b3a823456"
+dependencies = [
+ "percent-encoding",
+]
+
 [[package]]
 name = "fuchsia-cprng"
 version = "0.1.1"
@@ -548,7 +651,7 @@ checksum = "87750cf4b7a4c0625b1529e4c543c2182106e4dedc60a2a6455e00d212c489ac"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.66",
+ "syn 2.0.72",
 ]
 
 [[package]]
@@ -598,6 +701,12 @@ dependencies = [
  "wasi",
 ]
 
+[[package]]
+name = "gimli"
+version = "0.29.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "40ecd4077b5ae9fd2e9e169b102c6c330d0605168eb0e8bf79952b256dbefffd"
+
 [[package]]
 name = "gimli"
 version = "0.30.0"
@@ -615,6 +724,25 @@ version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d2fabcfbdc87f4758337ca535fb41a6d701b65693ce38287d856d1674551ec9b"
 
+[[package]]
+name = "h2"
+version = "0.4.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fa82e28a107a8cc405f0839610bdc9b15f1e25ec7d696aa5cf173edbcb1486ab"
+dependencies = [
+ "atomic-waker",
+ "bytes",
+ "fnv",
+ "futures-core",
+ "futures-sink",
+ "http",
+ "indexmap",
+ "slab",
+ "tokio",
+ "tokio-util",
+ "tracing",
+]
+
 [[package]]
 name = "hamming"
 version = "0.1.3"
@@ -657,7 +785,120 @@ version = "0.5.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e3d1354bf6b7235cb4a0576c2619fd4ed18183f689b12b006a0ee7329eeff9a5"
 dependencies = [
- "windows-sys",
+ "windows-sys 0.52.0",
+]
+
+[[package]]
+name = "http"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "21b9ddb458710bc376481b842f5da65cdf31522de232c1ca8146abce2a358258"
+dependencies = [
+ "bytes",
+ "fnv",
+ "itoa",
+]
+
+[[package]]
+name = "http-body"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1efedce1fb8e6913f23e0c92de8e62cd5b772a67e7b3946df930a62566c93184"
+dependencies = [
+ "bytes",
+ "http",
+]
+
+[[package]]
+name = "http-body-util"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "793429d76616a256bcb62c2a2ec2bed781c8307e797e2598c50010f2bee2544f"
+dependencies = [
+ "bytes",
+ "futures-util",
+ "http",
+ "http-body",
+ "pin-project-lite",
+]
+
+[[package]]
+name = "httparse"
+version = "1.9.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0fcc0b4a115bf80b728eb8ea024ad5bd707b615bfed49e0665b6e0f86fd082d9"
+
+[[package]]
+name = "hyper"
+version = "1.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "50dfd22e0e76d0f662d429a5f80fcaf3855009297eab6a0a9f8543834744ba05"
+dependencies = [
+ "bytes",
+ "futures-channel",
+ "futures-util",
+ "h2",
+ "http",
+ "http-body",
+ "httparse",
+ "itoa",
+ "pin-project-lite",
+ "smallvec",
+ "tokio",
+ "want",
+]
+
+[[package]]
+name = "hyper-rustls"
+version = "0.27.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5ee4be2c948921a1a5320b629c4193916ed787a7f7f293fd3f7f5a6c9de74155"
+dependencies = [
+ "futures-util",
+ "http",
+ "hyper",
+ "hyper-util",
+ "rustls",
+ "rustls-pki-types",
+ "tokio",
+ "tokio-rustls",
+ "tower-service",
+]
+
+[[package]]
+name = "hyper-tls"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "70206fc6890eaca9fde8a0bf71caa2ddfc9fe045ac9e5c70df101a7dbde866e0"
+dependencies = [
+ "bytes",
+ "http-body-util",
+ "hyper",
+ "hyper-util",
+ "native-tls",
+ "tokio",
+ "tokio-native-tls",
+ "tower-service",
+]
+
+[[package]]
+name = "hyper-util"
+version = "0.1.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3ab92f4f49ee4fb4f997c784b7a2e0fa70050211e0b6a287f898c3c9785ca956"
+dependencies = [
+ "bytes",
+ "futures-channel",
+ "futures-util",
+ "http",
+ "http-body",
+ "hyper",
+ "pin-project-lite",
+ "socket2",
+ "tokio",
+ "tower",
+ "tower-service",
+ "tracing",
 ]
 
 [[package]]
@@ -683,6 +924,16 @@ dependencies = [
  "cc",
 ]
 
+[[package]]
+name = "idna"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "634d9b1461af396cad843f47fdba5597a4f9e6ddd4bfb6ff5d85028c25cb12f6"
+dependencies = [
+ "unicode-bidi",
+ "unicode-normalization",
+]
+
 [[package]]
 name = "indexmap"
 version = "2.2.6"
@@ -695,9 +946,9 @@ dependencies = [
 
 [[package]]
 name = "inferno"
-version = "0.11.19"
+version = "0.11.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "321f0f839cd44a4686e9504b0a62b4d69a50b62072144c71c68f5873c167b8d9"
+checksum = "7c77a3ae7d4761b9c64d2c030f70746ceb8cfba32dce0325a56792e0a4816c31"
 dependencies = [
  "ahash",
  "clap",
@@ -729,6 +980,12 @@ dependencies = [
  "similar",
 ]
 
+[[package]]
+name = "ipnet"
+version = "2.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8f518f335dce6725a761382244631d86cf0ccb2863413590b31338feb467f9c3"
+
 [[package]]
 name = "is-terminal"
 version = "0.4.12"
@@ -737,7 +994,7 @@ checksum = "f23ff5ef2b80d608d61efee834934d862cd92461afc0560dedf493e4c033738b"
 dependencies = [
  "hermit-abi",
  "libc",
- "windows-sys",
+ "windows-sys 0.52.0",
 ]
 
 [[package]]
@@ -755,6 +1012,15 @@ dependencies = [
  "either",
 ]
 
+[[package]]
+name = "itertools"
+version = "0.13.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "413ee7dfc52ee1a4949ceeb7dbc8a33f2d6c088194d9f922fb8318faf1f01186"
+dependencies = [
+ "either",
+]
+
 [[package]]
 name = "itoa"
 version = "1.0.11"
@@ -772,9 +1038,9 @@ dependencies = [
 
 [[package]]
 name = "lazy_static"
-version = "1.4.0"
+version = "1.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
+checksum = "bbd2bcb4c963f2ddae06a2efc7e9f3591312473c50c6685e1f298068316e66fe"
 
 [[package]]
 name = "lazycell"
@@ -806,7 +1072,7 @@ version = "0.23.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1159a07fd5b9aca3f86ba5688394bb9bd75142bcec510052d6f765e98d801b09"
 dependencies = [
- "bitflags",
+ "bitflags 2.6.0",
  "libbpf-sys",
  "libc",
  "strum_macros",
@@ -832,12 +1098,12 @@ checksum = "97b3888a4aecf77e811145cadf6eef5901f4782c53886191b2f693f24761847c"
 
 [[package]]
 name = "libloading"
-version = "0.8.3"
+version = "0.8.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0c2a198fb6b0eada2a8df47933734e6d35d350665a33a3593d7164fa52c75c19"
+checksum = "4979f22fdb869068da03c9f7528f8297c6fd2606bc3a4affe42e6a823fdb8da4"
 dependencies = [
  "cfg-if",
- "windows-targets",
+ "windows-targets 0.52.6",
 ]
 
 [[package]]
@@ -852,7 +1118,7 @@ dependencies = [
  "clap",
  "data-encoding",
  "errno",
- "gimli",
+ "gimli 0.30.0",
  "glob",
  "inferno",
  "insta",
@@ -860,6 +1126,7 @@ dependencies = [
  "libbpf-cargo",
  "libbpf-rs",
  "libc",
+ "lightswitch-proto",
  "memmap2 0.9.4",
  "nix 0.29.0",
  "object",
@@ -868,6 +1135,9 @@ dependencies = [
  "plain",
  "primal",
  "procfs",
+ "prost 0.12.6",
+ "rand 0.8.5",
+ "reqwest",
  "ring",
  "rstest",
  "tempdir",
@@ -876,6 +1146,15 @@ dependencies = [
  "tracing-subscriber",
 ]
 
+[[package]]
+name = "lightswitch-proto"
+version = "0.1.0"
+dependencies = [
+ "anyhow",
+ "prost 0.12.6",
+ "prost-build",
+]
+
 [[package]]
 name = "linked-hash-map"
 version = "0.5.6"
@@ -900,9 +1179,9 @@ dependencies = [
 
 [[package]]
 name = "log"
-version = "0.4.21"
+version = "0.4.22"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "90ed8c1e510134f979dbc4f070f87d4313098b704861a105fe34231c70a3901c"
+checksum = "a7a70ba024b9dc04c27ea2f0c0548feb474ec5c54bba33a7f72f873a39d07b24"
 
 [[package]]
 name = "memchr"
@@ -928,6 +1207,12 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "mime"
+version = "0.3.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6877bb514081ee2a7ff5ef9de3281f14a4dd4bceac4c09388074a6b5df8a139a"
+
 [[package]]
 name = "minimal-lexical"
 version = "0.2.1"
@@ -936,21 +1221,55 @@ checksum = "68354c5c6bd36d73ff3feceb05efa59b6acb7626617f4962be322a825e61f79a"
 
 [[package]]
 name = "miniz_oxide"
-version = "0.7.3"
+version = "0.7.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "87dfd01fe195c66b572b37921ad8803d010623c0aca821bea2302239d155cdae"
+checksum = "b8a240ddb74feaf34a79a7add65a741f3167852fba007066dcac1ca548d89c08"
 dependencies = [
  "adler",
  "simd-adler32",
 ]
 
+[[package]]
+name = "mio"
+version = "0.8.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a4a650543ca06a924e8b371db273b2756685faae30f8487da1b56505a8f78b0c"
+dependencies = [
+ "libc",
+ "wasi",
+ "windows-sys 0.48.0",
+]
+
+[[package]]
+name = "multimap"
+version = "0.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "defc4c55412d89136f966bbb339008b474350e5e6e78d2714439c386b3137a03"
+
+[[package]]
+name = "native-tls"
+version = "0.2.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a8614eb2c83d59d1c8cc974dd3f920198647674a0a035e1af1fa58707e317466"
+dependencies = [
+ "libc",
+ "log",
+ "openssl",
+ "openssl-probe",
+ "openssl-sys",
+ "schannel",
+ "security-framework",
+ "security-framework-sys",
+ "tempfile",
+]
+
 [[package]]
 name = "nix"
 version = "0.28.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ab2156c4fce2f8df6c499cc1c763e4394b7482525bf2a9701c9d79d215f519e4"
 dependencies = [
- "bitflags",
+ "bitflags 2.6.0",
  "cfg-if",
  "cfg_aliases 0.1.1",
  "libc",
@@ -962,7 +1281,7 @@ version = "0.29.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "71e2746dc3a24dd78b3cfcb7be93368c6de9963d30f43a6a73998a9cf4b17b46"
 dependencies = [
- "bitflags",
+ "bitflags 2.6.0",
  "cfg-if",
  "cfg_aliases 0.2.1",
  "libc",
@@ -1018,9 +1337,9 @@ dependencies = [
 
 [[package]]
 name = "object"
-version = "0.36.0"
+version = "0.36.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "576dfe1fc8f9df304abb159d767a29d0476f7750fbf8aa7ad07816004a207434"
+checksum = "081b846d1d56ddfc18fdf1a922e4f6e07a11768ea1b92dec44e42b72712ccfce"
 dependencies = [
  "flate2",
  "memchr",
@@ -1033,6 +1352,50 @@ version = "1.19.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3fdb12b2476b595f9358c5161aa467c2438859caa136dec86c26fdd2efe17b92"
 
+[[package]]
+name = "openssl"
+version = "0.10.66"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9529f4786b70a3e8c61e11179af17ab6188ad8d0ded78c5529441ed39d4bd9c1"
+dependencies = [
+ "bitflags 2.6.0",
+ "cfg-if",
+ "foreign-types",
+ "libc",
+ "once_cell",
+ "openssl-macros",
+ "openssl-sys",
+]
+
+[[package]]
+name = "openssl-macros"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a948666b637a0f465e8564c73e89d4dde00d72d4d473cc972f390fc3dcee7d9c"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.72",
+]
+
+[[package]]
+name = "openssl-probe"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ff011a302c396a5197692431fc1948019154afc178baf7d8e37367442a4601cf"
+
+[[package]]
+name = "openssl-sys"
+version = "0.9.103"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7f9e8deee91df40a943c71b917e5874b951d32a802526c85721ce3b776c929d6"
+dependencies = [
+ "cc",
+ "libc",
+ "pkg-config",
+ "vcpkg",
+]
+
 [[package]]
 name = "overload"
 version = "0.1.1"
@@ -1059,9 +1422,15 @@ dependencies = [
  "libc",
  "redox_syscall",
  "smallvec",
- "windows-targets",
+ "windows-targets 0.52.6",
 ]
 
+[[package]]
+name = "percent-encoding"
+version = "2.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e3148f5046208a5d56bcfc03053e3ca6334e51da8dfb19b6cdc8b306fae3283e"
+
 [[package]]
 name = "perf-event-open-sys"
 version = "4.0.0"
@@ -1071,6 +1440,36 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "petgraph"
+version = "0.6.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b4c5cc86750666a3ed20bdaf5ca2a0344f9c67674cae0515bec2da16fbaa47db"
+dependencies = [
+ "fixedbitset",
+ "indexmap",
+]
+
+[[package]]
+name = "pin-project"
+version = "1.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b6bf43b791c5b9e34c3d182969b4abb522f9343702850a2e57f460d00d09b4b3"
+dependencies = [
+ "pin-project-internal",
+]
+
+[[package]]
+name = "pin-project-internal"
+version = "1.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2f38a4412a78282e09a2cf38d195ea5420d15ba0602cb375210efbc877243965"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.72",
+]
+
 [[package]]
 name = "pin-project-lite"
 version = "0.2.14"
@@ -1095,6 +1494,12 @@ version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b4596b6d070b27117e987119b4dac604f3c58cfb0b191112e24771b2faeac1a6"
 
+[[package]]
+name = "ppv-lite86"
+version = "0.2.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5b40af805b3121feab8a3c29f04d8ad262fa8e0561883e7653e024ae4479e6de"
+
 [[package]]
 name = "predicates"
 version = "3.1.0"
@@ -1129,7 +1534,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5f12335488a2f3b0a83b14edad48dca9879ce89b2edd10e80237e4e852dd645e"
 dependencies = [
  "proc-macro2",
- "syn 2.0.66",
+ "syn 2.0.72",
 ]
 
 [[package]]
@@ -1189,9 +1594,9 @@ dependencies = [
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.85"
+version = "1.0.86"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "22244ce15aa966053a896d1accb3a6e68469b97c7f33f284b99f0d576879fc23"
+checksum = "5e719e8df665df0d1c8fbfd238015744736151d4445ec0836b8e628aae103b77"
 dependencies = [
  "unicode-ident",
 ]
@@ -1202,7 +1607,7 @@ version = "0.16.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "731e0d9356b0c25f16f33b5be79b1c57b562f141ebfcdb0ad8ac2c13a24293b4"
 dependencies = [
- "bitflags",
+ "bitflags 2.6.0",
  "chrono",
  "flate2",
  "hex",
@@ -1217,18 +1622,94 @@ version = "0.16.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2d3554923a69f4ce04c4a754260c338f505ce22642d3830e049a399fc2059a29"
 dependencies = [
- "bitflags",
+ "bitflags 2.6.0",
  "chrono",
  "hex",
 ]
 
 [[package]]
-name = "quick-xml"
-version = "0.26.0"
+name = "prost"
+version = "0.12.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7f50b1c63b38611e7d4d7f68b82d3ad0cc71a2ad2e7f61fc10f1328d917c93cd"
+checksum = "deb1435c188b76130da55f17a466d252ff7b1418b2ad3e037d127b94e3411f29"
 dependencies = [
- "memchr",
+ "bytes",
+ "prost-derive 0.12.6",
+]
+
+[[package]]
+name = "prost"
+version = "0.13.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e13db3d3fde688c61e2446b4d843bc27a7e8af269a69440c0308021dc92333cc"
+dependencies = [
+ "bytes",
+ "prost-derive 0.13.1",
+]
+
+[[package]]
+name = "prost-build"
+version = "0.13.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5bb182580f71dd070f88d01ce3de9f4da5021db7115d2e1c3605a754153b77c1"
+dependencies = [
+ "bytes",
+ "heck 0.5.0",
+ "itertools 0.13.0",
+ "log",
+ "multimap",
+ "once_cell",
+ "petgraph",
+ "prettyplease",
+ "prost 0.13.1",
+ "prost-types",
+ "regex",
+ "syn 2.0.72",
+ "tempfile",
+]
+
+[[package]]
+name = "prost-derive"
+version = "0.12.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "81bddcdb20abf9501610992b6759a4c888aef7d1a7247ef75e2404275ac24af1"
+dependencies = [
+ "anyhow",
+ "itertools 0.12.1",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.72",
+]
+
+[[package]]
+name = "prost-derive"
+version = "0.13.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "18bec9b0adc4eba778b33684b7ba3e7137789434769ee3ce3930463ef904cfca"
+dependencies = [
+ "anyhow",
+ "itertools 0.13.0",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.72",
+]
+
+[[package]]
+name = "prost-types"
+version = "0.13.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cee5168b05f49d4b0ca581206eb14a7b22fafd963efe729ac48eb03266e25cc2"
+dependencies = [
+ "prost 0.13.1",
+]
+
+[[package]]
+name = "quick-xml"
+version = "0.26.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7f50b1c63b38611e7d4d7f68b82d3ad0cc71a2ad2e7f61fc10f1328d917c93cd"
+dependencies = [
+ "memchr",
 ]
 
 [[package]]
@@ -1253,6 +1734,27 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "rand"
+version = "0.8.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "34af8d1a0e25924bc5b7c43c079c942339d8f0a8b57c39049bef581b46327404"
+dependencies = [
+ "libc",
+ "rand_chacha",
+ "rand_core 0.6.4",
+]
+
+[[package]]
+name = "rand_chacha"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e6c10a63a0fa32252be49d21e7709d4d4baf8d231c2dbce1eaa8141b9b127d88"
+dependencies = [
+ "ppv-lite86",
+ "rand_core 0.6.4",
+]
+
 [[package]]
 name = "rand_core"
 version = "0.3.1"
@@ -1268,6 +1770,15 @@ version = "0.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9c33a3c44ca05fa6f1807d8e6743f3824e8509beca625669633be0acbdf509dc"
 
+[[package]]
+name = "rand_core"
+version = "0.6.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ec0be4795e2f6a28069bec0b5ff3e2ac9bafc99e6a9a7dc3547996c5c816922c"
+dependencies = [
+ "getrandom",
+]
+
 [[package]]
 name = "rdrand"
 version = "0.4.0"
@@ -1279,11 +1790,11 @@ dependencies = [
 
 [[package]]
 name = "redox_syscall"
-version = "0.5.1"
+version = "0.5.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "469052894dcb553421e483e4209ee581a45100d31b4018de03e5a7ad86374a7e"
+checksum = "2a908a6e00f1fdd0dfd9c0eb08ce85126f6d8bbda50017e74bc4a4b7d4a926a4"
 dependencies = [
- "bitflags",
+ "bitflags 2.6.0",
 ]
 
 [[package]]
@@ -1330,11 +1841,55 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "reqwest"
+version = "0.12.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c7d6d2a27d57148378eb5e111173f4276ad26340ecc5c49a4a2152167a2d6a37"
+dependencies = [
+ "base64",
+ "bytes",
+ "encoding_rs",
+ "futures-channel",
+ "futures-core",
+ "futures-util",
+ "h2",
+ "http",
+ "http-body",
+ "http-body-util",
+ "hyper",
+ "hyper-rustls",
+ "hyper-tls",
+ "hyper-util",
+ "ipnet",
+ "js-sys",
+ "log",
+ "mime",
+ "native-tls",
+ "once_cell",
+ "percent-encoding",
+ "pin-project-lite",
+ "rustls-pemfile",
+ "serde",
+ "serde_json",
+ "serde_urlencoded",
+ "sync_wrapper",
+ "system-configuration",
+ "tokio",
+ "tokio-native-tls",
+ "tower-service",
+ "url",
+ "wasm-bindgen",
+ "wasm-bindgen-futures",
+ "web-sys",
+ "winreg",
+]
+
 [[package]]
 name = "rgb"
-version = "0.8.37"
+version = "0.8.45"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "05aaa8004b64fd573fc9d002f4e632d51ad4f026c2b5ba95fcb6c2f32c2c47d8"
+checksum = "ade4539f42266ded9e755c605bdddf546242b2c961b03b06a7375260788a0523"
 dependencies = [
  "bytemuck",
 ]
@@ -1351,7 +1906,7 @@ dependencies = [
  "libc",
  "spin",
  "untrusted",
- "windows-sys",
+ "windows-sys 0.52.0",
 ]
 
 [[package]]
@@ -1380,7 +1935,7 @@ dependencies = [
  "regex",
  "relative-path",
  "rustc_version",
- "syn 2.0.66",
+ "syn 2.0.72",
  "unicode-ident",
 ]
 
@@ -1411,11 +1966,51 @@ version = "0.38.34"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "70dc5ec042f7a43c4a73241207cecc9873a06d45debb38b329f8541d85c2730f"
 dependencies = [
- "bitflags",
+ "bitflags 2.6.0",
  "errno",
  "libc",
  "linux-raw-sys",
- "windows-sys",
+ "windows-sys 0.52.0",
+]
+
+[[package]]
+name = "rustls"
+version = "0.23.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4828ea528154ae444e5a642dbb7d5623354030dc9822b83fd9bb79683c7399d0"
+dependencies = [
+ "once_cell",
+ "rustls-pki-types",
+ "rustls-webpki",
+ "subtle",
+ "zeroize",
+]
+
+[[package]]
+name = "rustls-pemfile"
+version = "2.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "29993a25686778eb88d4189742cd713c9bce943bc54251a33509dc63cbacf73d"
+dependencies = [
+ "base64",
+ "rustls-pki-types",
+]
+
+[[package]]
+name = "rustls-pki-types"
+version = "1.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "976295e77ce332211c0d24d92c0e83e50f5c5f046d11082cea19f3df13a3562d"
+
+[[package]]
+name = "rustls-webpki"
+version = "0.102.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f9a6fccd794a42c2c105b513a2f62bc3fd8f3ba57a4593677ceb0bd035164d78"
+dependencies = [
+ "ring",
+ "rustls-pki-types",
+ "untrusted",
 ]
 
 [[package]]
@@ -1426,12 +2021,11 @@ checksum = "955d28af4278de8121b7ebeb796b6a45735dc01436d898801014aced2773a3d6"
 
 [[package]]
 name = "ruzstd"
-version = "0.6.0"
+version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5174a470eeb535a721ae9fdd6e291c2411a906b96592182d05217591d5c5cf7b"
+checksum = "5022b253619b1ba797f243056276bed8ed1a73b0f5a7ce7225d524067644bf8f"
 dependencies = [
  "byteorder",
- "derive_more",
  "twox-hash",
 ]
 
@@ -1441,12 +2035,44 @@ version = "1.0.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f3cb5ba0dc43242ce17de99c180e96db90b235b8a9fdc9543c96d2209116bd9f"
 
+[[package]]
+name = "schannel"
+version = "0.1.23"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fbc91545643bcf3a0bbb6569265615222618bdf33ce4ffbbd13c4bbd4c093534"
+dependencies = [
+ "windows-sys 0.52.0",
+]
+
 [[package]]
 name = "scopeguard"
 version = "1.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "94143f37725109f92c262ed2cf5e59bce7498c01bcc1502d7b9afe439a4e9f49"
 
+[[package]]
+name = "security-framework"
+version = "2.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "897b2245f0b511c87893af39b033e5ca9cce68824c4d7e7630b5a1d339658d02"
+dependencies = [
+ "bitflags 2.6.0",
+ "core-foundation",
+ "core-foundation-sys",
+ "libc",
+ "security-framework-sys",
+]
+
+[[package]]
+name = "security-framework-sys"
+version = "2.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "75da29fe9b9b08fe9d6b22b5b4bcbc75d8db3aa31e639aa56bb62e9d46bfceaf"
+dependencies = [
+ "core-foundation-sys",
+ "libc",
+]
+
 [[package]]
 name = "semver"
 version = "1.0.23"
@@ -1458,35 +2084,47 @@ dependencies = [
 
 [[package]]
 name = "serde"
-version = "1.0.203"
+version = "1.0.204"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7253ab4de971e72fb7be983802300c30b5a7f0c2e56fab8abfc6a214307c0094"
+checksum = "bc76f558e0cbb2a839d37354c575f1dc3fdc6546b5be373ba43d95f231bf7c12"
 dependencies = [
  "serde_derive",
 ]
 
 [[package]]
 name = "serde_derive"
-version = "1.0.203"
+version = "1.0.204"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "500cbc0ebeb6f46627f50f3f5811ccf6bf00643be300b4c3eabc0ef55dc5b5ba"
+checksum = "e0cd7e117be63d3c3678776753929474f3b04a43a080c744d6b0ae2a8c28e222"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.66",
+ "syn 2.0.72",
 ]
 
 [[package]]
 name = "serde_json"
-version = "1.0.117"
+version = "1.0.120"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "455182ea6142b14f93f4bc5320a2b31c1f266b66a4a5c858b013302a5d8cbfc3"
+checksum = "4e0d21c9a8cae1235ad58a00c11cb40d4b1e5c784f1ef2c537876ed6ffd8b7c5"
 dependencies = [
  "itoa",
  "ryu",
  "serde",
 ]
 
+[[package]]
+name = "serde_urlencoded"
+version = "0.7.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d3491c14715ca2294c4d6a88f15e84739788c1d030eed8c110436aafdaa2f3fd"
+dependencies = [
+ "form_urlencoded",
+ "itoa",
+ "ryu",
+ "serde",
+]
+
 [[package]]
 name = "sharded-slab"
 version = "0.1.7"
@@ -1510,9 +2148,9 @@ checksum = "d66dc143e6b11c1eddc06d5c423cfc97062865baf299914ab64caa38182078fe"
 
 [[package]]
 name = "similar"
-version = "2.5.0"
+version = "2.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fa42c91313f1d05da9b26f267f931cf178d4aba455b4c4622dd7355eb80c6640"
+checksum = "1de1d4f81173b03af4c0cbed3c898f6bff5b870e4a7f5d6f4057d62a7a4b686e"
 
 [[package]]
 name = "slab"
@@ -1529,6 +2167,16 @@ version = "1.13.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3c5e1a9a646d36c3599cd173a41282daf47c44583ad367b8e6837255952e5c67"
 
+[[package]]
+name = "socket2"
+version = "0.5.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ce305eb0b4296696835b71df73eb912e0f1ffd2556a501fcede6e0c50349191c"
+dependencies = [
+ "libc",
+ "windows-sys 0.52.0",
+]
+
 [[package]]
 name = "spin"
 version = "0.9.8"
@@ -1572,6 +2220,12 @@ dependencies = [
  "syn 1.0.109",
 ]
 
+[[package]]
+name = "subtle"
+version = "2.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "13c2bddecc57b384dee18652358fb23172facb8a2c51ccc10d74c157bdea3292"
+
 [[package]]
 name = "syn"
 version = "1.0.109"
@@ -1585,22 +2239,49 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "2.0.66"
+version = "2.0.72"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c42f3f41a2de00b01c0aaad383c5a45241efc8b2d1eda5661812fda5f3cdcff5"
+checksum = "dc4b9b9bf2add8093d3f2c0204471e951b2285580335de42f9d2534f3ae7a8af"
 dependencies = [
  "proc-macro2",
  "quote",
  "unicode-ident",
 ]
 
+[[package]]
+name = "sync_wrapper"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a7065abeca94b6a8a577f9bd45aa0867a2238b74e8eb67cf10d492bc39351394"
+
+[[package]]
+name = "system-configuration"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ba3a3adc5c275d719af8cb4272ea1c4a6d668a777f37e115f6d11ddbc1c8e0e7"
+dependencies = [
+ "bitflags 1.3.2",
+ "core-foundation",
+ "system-configuration-sys",
+]
+
+[[package]]
+name = "system-configuration-sys"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a75fb188eb626b924683e3b95e3a48e63551fcfb51949de2f06a9d91dbee93c9"
+dependencies = [
+ "core-foundation-sys",
+ "libc",
+]
+
 [[package]]
 name = "tempdir"
 version = "0.3.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "15f2b5fb00ccdf689e0149d1b1b3c03fead81c2b37735d812fa8bddbbf41b6d8"
 dependencies = [
- "rand",
+ "rand 0.4.6",
  "remove_dir_all",
 ]
 
@@ -1613,7 +2294,7 @@ dependencies = [
  "cfg-if",
  "fastrand",
  "rustix",
- "windows-sys",
+ "windows-sys 0.52.0",
 ]
 
 [[package]]
@@ -1624,22 +2305,22 @@ checksum = "3369f5ac52d5eb6ab48c6b4ffdc8efbcad6b89c765749064ba298f2c68a16a76"
 
 [[package]]
 name = "thiserror"
-version = "1.0.61"
+version = "1.0.63"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c546c80d6be4bc6a00c0f01730c08df82eaa7a7a61f11d656526506112cc1709"
+checksum = "c0342370b38b6a11b6cc11d6a805569958d54cfa061a29969c3b5ce2ea405724"
 dependencies = [
  "thiserror-impl",
 ]
 
 [[package]]
 name = "thiserror-impl"
-version = "1.0.61"
+version = "1.0.63"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "46c3384250002a6d5af4d114f2845d37b57521033f30d5c3f46c4d70e1197533"
+checksum = "a4558b58466b9ad7ca0f102865eccc95938dca1a74a856f2b57b6629050da261"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.66",
+ "syn 2.0.72",
 ]
 
 [[package]]
@@ -1652,6 +2333,70 @@ dependencies = [
  "once_cell",
 ]
 
+[[package]]
+name = "tinyvec"
+version = "1.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "445e881f4f6d382d5f27c034e25eb92edd7c784ceab92a0937db7f2e9471b938"
+dependencies = [
+ "tinyvec_macros",
+]
+
+[[package]]
+name = "tinyvec_macros"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1f3ccbac311fea05f86f61904b462b55fb3df8837a366dfc601a0161d0532f20"
+
+[[package]]
+name = "tokio"
+version = "1.38.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "eb2caba9f80616f438e09748d5acda951967e1ea58508ef53d9c6402485a46df"
+dependencies = [
+ "backtrace",
+ "bytes",
+ "libc",
+ "mio",
+ "pin-project-lite",
+ "socket2",
+ "windows-sys 0.48.0",
+]
+
+[[package]]
+name = "tokio-native-tls"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bbae76ab933c85776efabc971569dd6119c580d8f5d448769dec1764bf796ef2"
+dependencies = [
+ "native-tls",
+ "tokio",
+]
+
+[[package]]
+name = "tokio-rustls"
+version = "0.26.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0c7bc40d0e5a97695bb96e27995cd3a08538541b0a846f65bba7a359f36700d4"
+dependencies = [
+ "rustls",
+ "rustls-pki-types",
+ "tokio",
+]
+
+[[package]]
+name = "tokio-util"
+version = "0.7.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9cf6b47b3771c49ac75ad09a6162f53ad4b8088b76ac60e8ec1455b31a189fe1"
+dependencies = [
+ "bytes",
+ "futures-core",
+ "futures-sink",
+ "pin-project-lite",
+ "tokio",
+]
+
 [[package]]
 name = "toml_datetime"
 version = "0.6.6"
@@ -1669,6 +2414,33 @@ dependencies = [
  "winnow",
 ]
 
+[[package]]
+name = "tower"
+version = "0.4.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b8fa9be0de6cf49e536ce1851f987bd21a43b771b09473c3549a6c853db37c1c"
+dependencies = [
+ "futures-core",
+ "futures-util",
+ "pin-project",
+ "pin-project-lite",
+ "tokio",
+ "tower-layer",
+ "tower-service",
+]
+
+[[package]]
+name = "tower-layer"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c20c8dbed6283a09604c3e69b4b7eeb54e298b8a600d4d5ecb5ad39de609f1d0"
+
+[[package]]
+name = "tower-service"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b6bc1c9ce2b5135ac7f93c72918fc37feb872bdc6a5533a8b85eb4b86bfdae52"
+
 [[package]]
 name = "tracing"
 version = "0.1.40"
@@ -1688,7 +2460,7 @@ checksum = "34704c8d6ebcbc939824180af020566b01a7c01f80641264eba0999f6c2b6be7"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.66",
+ "syn 2.0.72",
 ]
 
 [[package]]
@@ -1726,6 +2498,12 @@ dependencies = [
  "tracing-log",
 ]
 
+[[package]]
+name = "try-lock"
+version = "0.2.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e421abadd41a4225275504ea4d6566923418b7f05506fbc9c0fe86ba7396114b"
+
 [[package]]
 name = "twox-hash"
 version = "1.6.3"
@@ -1736,18 +2514,44 @@ dependencies = [
  "static_assertions",
 ]
 
+[[package]]
+name = "unicode-bidi"
+version = "0.3.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "08f95100a766bf4f8f28f90d77e0a5461bbdb219042e7679bebe79004fed8d75"
+
 [[package]]
 name = "unicode-ident"
 version = "1.0.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3354b9ac3fae1ff6755cb6db53683adb661634f67557942dea4facebec0fee4b"
 
+[[package]]
+name = "unicode-normalization"
+version = "0.1.23"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a56d1686db2308d901306f92a263857ef59ea39678a5458e7cb17f01415101f5"
+dependencies = [
+ "tinyvec",
+]
+
 [[package]]
 name = "untrusted"
 version = "0.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8ecb6da28b8a351d773b68d5825ac39017e680750f980f3a1a85cd8dd28a47c1"
 
+[[package]]
+name = "url"
+version = "2.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "22784dbdf76fdde8af1aeda5622b546b422b6fc585325248a2bf9f5e41e94d6c"
+dependencies = [
+ "form_urlencoded",
+ "idna",
+ "percent-encoding",
+]
+
 [[package]]
 name = "utf8parse"
 version = "0.2.2"
@@ -1760,6 +2564,12 @@ version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "830b7e5d4d90034032940e4ace0d9a9a057e7a45cd94e6c007832e39edb82f6d"
 
+[[package]]
+name = "vcpkg"
+version = "0.2.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "accd4ea62f7bb7a82fe23066fb0957d48ef677f6eeb8215f372f52e48bb32426"
+
 [[package]]
 name = "version_check"
 version = "0.9.4"
@@ -1785,6 +2595,15 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "want"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bfa7760aed19e106de2c7c0b581b509f2f25d3dacaf737cb82ac61bc6d760b0e"
+dependencies = [
+ "try-lock",
+]
+
 [[package]]
 name = "wasi"
 version = "0.11.0+wasi-snapshot-preview1"
@@ -1812,10 +2631,22 @@ dependencies = [
  "once_cell",
  "proc-macro2",
  "quote",
- "syn 2.0.66",
+ "syn 2.0.72",
  "wasm-bindgen-shared",
 ]
 
+[[package]]
+name = "wasm-bindgen-futures"
+version = "0.4.42"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "76bc14366121efc8dbb487ab05bcc9d346b3b5ec0eaa76e46594cabbe51762c0"
+dependencies = [
+ "cfg-if",
+ "js-sys",
+ "wasm-bindgen",
+ "web-sys",
+]
+
 [[package]]
 name = "wasm-bindgen-macro"
 version = "0.2.92"
@@ -1834,7 +2665,7 @@ checksum = "e94f17b526d0a461a191c78ea52bbce64071ed5c04c9ffe424dcb38f74171bb7"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.66",
+ "syn 2.0.72",
  "wasm-bindgen-backend",
  "wasm-bindgen-shared",
 ]
@@ -1845,6 +2676,16 @@ version = "0.2.92"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "af190c94f2773fdb3729c55b007a722abb5384da03bc0986df4c289bf5567e96"
 
+[[package]]
+name = "web-sys"
+version = "0.3.69"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "77afa9a11836342370f4817622a2f0f418b134426d91a82dfb48f532d2ec13ef"
+dependencies = [
+ "js-sys",
+ "wasm-bindgen",
+]
+
 [[package]]
 name = "which"
 version = "4.4.2"
@@ -1885,7 +2726,16 @@ version = "0.52.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "33ab640c8d7e35bf8ba19b884ba838ceb4fba93a4e8c65a9059d08afcfc683d9"
 dependencies = [
- "windows-targets",
+ "windows-targets 0.52.6",
+]
+
+[[package]]
+name = "windows-sys"
+version = "0.48.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "677d2418bec65e3338edb076e806bc1ec15693c5d0104683f2efe857f61056a9"
+dependencies = [
+ "windows-targets 0.48.5",
 ]
 
 [[package]]
@@ -1894,72 +2744,129 @@ version = "0.52.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "282be5f36a8ce781fad8c8ae18fa3f9beff57ec1b52cb3de0789201425d9a33d"
 dependencies = [
- "windows-targets",
+ "windows-targets 0.52.6",
 ]
 
 [[package]]
 name = "windows-targets"
-version = "0.52.5"
+version = "0.48.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6f0713a46559409d202e70e28227288446bf7841d3211583a4b53e3f6d96e7eb"
+checksum = "9a2fa6e2155d7247be68c096456083145c183cbbbc2764150dda45a87197940c"
 dependencies = [
- "windows_aarch64_gnullvm",
- "windows_aarch64_msvc",
- "windows_i686_gnu",
+ "windows_aarch64_gnullvm 0.48.5",
+ "windows_aarch64_msvc 0.48.5",
+ "windows_i686_gnu 0.48.5",
+ "windows_i686_msvc 0.48.5",
+ "windows_x86_64_gnu 0.48.5",
+ "windows_x86_64_gnullvm 0.48.5",
+ "windows_x86_64_msvc 0.48.5",
+]
+
+[[package]]
+name = "windows-targets"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9b724f72796e036ab90c1021d4780d4d3d648aca59e491e6b98e725b84e99973"
+dependencies = [
+ "windows_aarch64_gnullvm 0.52.6",
+ "windows_aarch64_msvc 0.52.6",
+ "windows_i686_gnu 0.52.6",
  "windows_i686_gnullvm",
- "windows_i686_msvc",
- "windows_x86_64_gnu",
- "windows_x86_64_gnullvm",
- "windows_x86_64_msvc",
+ "windows_i686_msvc 0.52.6",
+ "windows_x86_64_gnu 0.52.6",
+ "windows_x86_64_gnullvm 0.52.6",
+ "windows_x86_64_msvc 0.52.6",
 ]
 
 [[package]]
 name = "windows_aarch64_gnullvm"
-version = "0.52.5"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2b38e32f0abccf9987a4e3079dfb67dcd799fb61361e53e2882c3cbaf0d905d8"
+
+[[package]]
+name = "windows_aarch64_gnullvm"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "32a4622180e7a0ec044bb555404c800bc9fd9ec262ec147edd5989ccd0c02cd3"
+
+[[package]]
+name = "windows_aarch64_msvc"
+version = "0.48.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7088eed71e8b8dda258ecc8bac5fb1153c5cffaf2578fc8ff5d61e23578d3263"
+checksum = "dc35310971f3b2dbbf3f0690a219f40e2d9afcf64f9ab7cc1be722937c26b4bc"
 
 [[package]]
 name = "windows_aarch64_msvc"
-version = "0.52.5"
+version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9985fd1504e250c615ca5f281c3f7a6da76213ebd5ccc9561496568a2752afb6"
+checksum = "09ec2a7bb152e2252b53fa7803150007879548bc709c039df7627cabbd05d469"
 
 [[package]]
 name = "windows_i686_gnu"
-version = "0.52.5"
+version = "0.48.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "88ba073cf16d5372720ec942a8ccbf61626074c6d4dd2e745299726ce8b89670"
+checksum = "a75915e7def60c94dcef72200b9a8e58e5091744960da64ec734a6c6e9b3743e"
+
+[[package]]
+name = "windows_i686_gnu"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8e9b5ad5ab802e97eb8e295ac6720e509ee4c243f69d781394014ebfe8bbfa0b"
 
 [[package]]
 name = "windows_i686_gnullvm"
-version = "0.52.5"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0eee52d38c090b3caa76c563b86c3a4bd71ef1a819287c19d586d7334ae8ed66"
+
+[[package]]
+name = "windows_i686_msvc"
+version = "0.48.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "87f4261229030a858f36b459e748ae97545d6f1ec60e5e0d6a3d32e0dc232ee9"
+checksum = "8f55c233f70c4b27f66c523580f78f1004e8b5a8b659e05a4eb49d4166cca406"
 
 [[package]]
 name = "windows_i686_msvc"
-version = "0.52.5"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "240948bc05c5e7c6dabba28bf89d89ffce3e303022809e73deaefe4f6ec56c66"
+
+[[package]]
+name = "windows_x86_64_gnu"
+version = "0.48.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "db3c2bf3d13d5b658be73463284eaf12830ac9a26a90c717b7f771dfe97487bf"
+checksum = "53d40abd2583d23e4718fddf1ebec84dbff8381c07cae67ff7768bbf19c6718e"
 
 [[package]]
 name = "windows_x86_64_gnu"
-version = "0.52.5"
+version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4e4246f76bdeff09eb48875a0fd3e2af6aada79d409d33011886d3e1581517d9"
+checksum = "147a5c80aabfbf0c7d901cb5895d1de30ef2907eb21fbbab29ca94c5b08b1a78"
 
 [[package]]
 name = "windows_x86_64_gnullvm"
-version = "0.52.5"
+version = "0.48.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "852298e482cd67c356ddd9570386e2862b5673c85bd5f88df9ab6802b334c596"
+checksum = "0b7b52767868a23d5bab768e390dc5f5c55825b6d30b86c844ff2dc7414044cc"
+
+[[package]]
+name = "windows_x86_64_gnullvm"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "24d5b23dc417412679681396f2b49f3de8c1473deb516bd34410872eff51ed0d"
+
+[[package]]
+name = "windows_x86_64_msvc"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ed94fce61571a4006852b7389a063ab983c02eb1bb37b47f8272ce92d06d9538"
 
 [[package]]
 name = "windows_x86_64_msvc"
-version = "0.52.5"
+version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bec47e5bfd1bff0eeaf6d8b485cc1074891a197ab4225d504cb7a1ab88b02bf0"
+checksum = "589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec"
 
 [[package]]
 name = "winnow"
@@ -1970,22 +2877,38 @@ dependencies = [
  "memchr",
 ]
 
+[[package]]
+name = "winreg"
+version = "0.52.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a277a57398d4bfa075df44f501a17cfdf8542d224f0d36095a2adc7aee4ef0a5"
+dependencies = [
+ "cfg-if",
+ "windows-sys 0.48.0",
+]
+
 [[package]]
 name = "zerocopy"
-version = "0.7.34"
+version = "0.7.35"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ae87e3fcd617500e5d106f0380cf7b77f3c6092aae37191433159dda23cfb087"
+checksum = "1b9b4fd18abc82b8136838da5d50bae7bdea537c574d8dc1a34ed098d6c166f0"
 dependencies = [
  "zerocopy-derive",
 ]
 
 [[package]]
 name = "zerocopy-derive"
-version = "0.7.34"
+version = "0.7.35"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "15e934569e47891f7d9411f1a451d947a60e000ab3bd24fbb970f000387d1b3b"
+checksum = "fa4f8080344d4671fb4e831a13ad1e68092748387dfc4f55e356242fae12ce3e"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.66",
+ "syn 2.0.72",
 ]
+
+[[package]]
+name = "zeroize"
+version = "1.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ced3678a2879b30306d323f4542626697a464a97c0a07c9aebf7ebca65cd4dde"
diff --git a/Cargo.toml b/Cargo.toml
index 9add155..5dacae1 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -3,6 +3,11 @@ name = "lightswitch"
 version = "0.1.0"
 edition = "2021"
 
+[workspace]
+members = [
+    "lightswitch-proto",
+]
+
 [dependencies]
 gimli = "0.30.0"
 object = "0.36.0"
@@ -27,12 +32,16 @@ chrono = "0.4.38"
 inferno = "0.11.19"
 primal = "0.3.3"
 nix = { version = "0.29.0", features = ["user"] }
+prost = "0.12" # Needed to encode protocol buffers to bytes.
+reqwest = { version = "0.12", features = ["blocking"] }
+lightswitch-proto = { path = "./lightswitch-proto"}
 
 [dev-dependencies]
 assert_cmd = { version = "2.0.14" }
 insta = { version = "1.39.0", features = ["yaml"] }
 rstest = "0.21.0"
 tempdir = "0.3.7"
+rand = "0.8.5"
 
 [build-dependencies]
 bindgen = "0.69.4"
diff --git a/flake.nix b/flake.nix
index 2127bc9..2b31241 100644
--- a/flake.nix
+++ b/flake.nix
@@ -26,6 +26,7 @@
           elfutils' = (pkgs.elfutils.override { enableDebuginfod = false; }).overrideAttrs (attrs: {
             configureFlags = attrs.configureFlags ++ [ "--without-zstd" ];
           });
+          openssl' = (pkgs.openssl.override { static = true; });
           buildInputs = with pkgs; [
             llvmPackages_16.clang
             llvmPackages_16.libcxx
@@ -36,6 +37,8 @@
             zlib.dev
             glibc
             glibc.static
+            protobuf
+            openssl'
           ];
           nativeBuildInputs = with pkgs; [
             pkg-config
@@ -73,7 +76,6 @@
               # Debugging
               strace
               gdb
-              openssl
               # Other tools
               skopeo
               cargo-edit
diff --git a/lightswitch-proto/Cargo.toml b/lightswitch-proto/Cargo.toml
new file mode 100644
index 0000000..abbd9b4
--- /dev/null
+++ b/lightswitch-proto/Cargo.toml
@@ -0,0 +1,11 @@
+[package]
+name = "lightswitch-proto"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+prost = "0.12"
+anyhow = "1.0.86"
+
+[build-dependencies]
+prost-build = "0.13.1"
\ No newline at end of file
diff --git a/lightswitch-proto/build.rs b/lightswitch-proto/build.rs
new file mode 100644
index 0000000..ebd2ccd
--- /dev/null
+++ b/lightswitch-proto/build.rs
@@ -0,0 +1,9 @@
+fn main() {
+    let mut config = prost_build::Config::new();
+    config.type_attribute("Sample", "#[derive(Eq, Hash)]");
+    config.type_attribute("Label", "#[derive(Eq, Hash)]");
+
+    config
+        .compile_protos(&["src/protos/profile.proto"], &["src/protos"])
+        .expect("build profile.proto");
+}
diff --git a/lightswitch-proto/src/lib.rs b/lightswitch-proto/src/lib.rs
new file mode 100644
index 0000000..6b76aba
--- /dev/null
+++ b/lightswitch-proto/src/lib.rs
@@ -0,0 +1 @@
+pub mod profile;
diff --git a/lightswitch-proto/src/profile.rs b/lightswitch-proto/src/profile.rs
new file mode 100644
index 0000000..2f765c2
--- /dev/null
+++ b/lightswitch-proto/src/profile.rs
@@ -0,0 +1,461 @@
+#![allow(dead_code)]
+
+pub mod pprof {
+    include!(concat!(env!("OUT_DIR"), "/perftools.profiles.rs"));
+}
+
+use std::collections::hash_map::Entry;
+use std::collections::HashMap;
+use std::time::{Duration, SystemTime};
+
+use anyhow::{anyhow, Result};
+
+pub struct PprofBuilder {
+    duration: Duration,
+    freq_in_hz: i64,
+
+    known_mappings: HashMap<u64, u64>,
+    mappings: Vec<pprof::Mapping>,
+
+    known_strings: HashMap<String, i64>,
+    string_table: Vec<String>,
+
+    /// (address, mapping_id) => location_id
+    known_locations: HashMap<(u64, u64), u64>,
+    locations: Vec<pprof::Location>,
+
+    known_functions: HashMap<i64, u64>,
+    pub functions: Vec<pprof::Function>,
+
+    samples: Vec<pprof::Sample>,
+}
+
+pub enum LabelStringOrNumber {
+    String(String),
+    /// Value and unit.
+    Number(i64, String),
+}
+
+impl PprofBuilder {
+    pub fn new(duration: Duration, freq_in_hz: i64) -> Self {
+        Self {
+            duration,
+            freq_in_hz,
+
+            known_mappings: HashMap::new(),
+            mappings: Vec::new(),
+
+            known_strings: HashMap::new(),
+            string_table: Vec::new(),
+
+            known_locations: HashMap::new(),
+            locations: Vec::new(),
+
+            known_functions: HashMap::new(),
+            functions: Vec::new(),
+
+            samples: Vec::new(),
+        }
+    }
+
+    /// Run some validations to ensure that the profile is semantically correct.
+    pub fn validate(&self) -> Result<()> {
+        let validate_line = |line: &pprof::Line| {
+            let function_id = line.function_id;
+            if function_id == 0 {
+                return Err(anyhow!("Found a null function_id (id=0)"));
+            }
+
+            let maybe_function = self.functions.get(function_id as usize - 1);
+            match maybe_function {
+                Some(function) => {
+                    if function.id == 0 {
+                        return Err(anyhow!("Found a null function (id=0)"));
+                    }
+
+                    let function_id = function.name;
+                    self.string_table.get(function_id as usize).ok_or(anyhow!(
+                        "Could not find function name with id {}",
+                        function_id
+                    ))?;
+                }
+                None => {
+                    return Err(anyhow!("Function with id {} not found", function_id));
+                }
+            }
+            Ok(())
+        };
+
+        let validate_location = |location: &pprof::Location| {
+            let mapping_id = location.mapping_id;
+            if mapping_id == 0 {
+                return Err(anyhow!("Found a null mapping (id=0)"));
+            }
+            let maybe_mapping = self.mappings.get(mapping_id as usize - 1);
+            match maybe_mapping {
+                Some(mapping) => {
+                    if mapping.id == 0 {
+                        return Err(anyhow!("Found a null mapping (id=0)"));
+                    }
+                }
+                None => {
+                    return Err(anyhow!("Mapping with id {} not found", mapping_id));
+                }
+            }
+
+            for line in &location.line {
+                validate_line(line)?;
+            }
+
+            Ok(())
+        };
+
+        for sample in &self.samples {
+            for location_id in &sample.location_id {
+                if *location_id == 0 {
+                    return Err(anyhow!("Found a null location (id=0)"));
+                }
+
+                let maybe_location = self.locations.get(*location_id as usize - 1);
+                match maybe_location {
+                    Some(location) => validate_location(location)?,
+                    None => {
+                        return Err(anyhow!("Location with id {} not found", location_id));
+                    }
+                }
+            }
+        }
+        Ok(())
+    }
+
+    /// Returns the id for a string in the string table or None if it's not present.
+    pub fn string_id(&self, string: &str) -> Option<i64> {
+        self.known_strings.get(string).copied()
+    }
+
+    /// Inserts a string in the string table and returns its id.
+    pub fn get_or_insert_string(&mut self, string: &str) -> i64 {
+        // The first element in the string table must be the empty string.
+        if self.string_table.is_empty() {
+            self.known_strings.insert("".to_string(), 0);
+            self.string_table.push("".to_string());
+        }
+
+        match self.known_strings.entry(string.to_string()) {
+            Entry::Occupied(o) => {
+                return *o.get();
+            }
+            Entry::Vacant(v) => {
+                let id = self.string_table.len() as i64;
+                v.insert(id);
+                self.string_table.push(string.to_string());
+                id
+            }
+        }
+    }
+
+    pub fn add_function(&mut self, func_name: &str) -> u64 {
+        let id = self.functions.len() as u64 + 1;
+        let name_idx = self.get_or_insert_string(func_name);
+
+        let function: pprof::Function = pprof::Function {
+            id,
+            name: name_idx,
+            system_name: name_idx,
+            filename: self.get_or_insert_string("no-filename"),
+            ..Default::default()
+        };
+
+        match self.known_functions.entry(name_idx) {
+            Entry::Occupied(o) => {
+                return *o.get();
+            }
+            Entry::Vacant(v) => {
+                let id = self.functions.len() as u64 + 1;
+                v.insert(id);
+                self.functions.push(function);
+                id
+            }
+        }
+    }
+
+    pub fn add_line(&mut self, func_name: &str) -> (pprof::Line, u64) {
+        let function_id = self.add_function(func_name);
+        (
+            pprof::Line {
+                function_id,
+                ..Default::default()
+            },
+            function_id,
+        )
+    }
+
+    pub fn add_location(&mut self, address: u64, mapping_id: u64, lines: Vec<pprof::Line>) -> u64 {
+        let id: u64 = self.locations.len() as u64 + 1;
+
+        let location = pprof::Location {
+            id,
+            mapping_id,
+            address,
+            line: lines,      // only used for local symbolisation.
+            is_folded: false, // only used for local symbolisation.
+        };
+
+        let unique_id = (address, mapping_id);
+
+        match self.known_locations.entry(unique_id) {
+            Entry::Occupied(o) => {
+                return *o.get();
+            }
+            Entry::Vacant(v) => {
+                let id = self.locations.len() as u64 + 1;
+                v.insert(id);
+                self.locations.push(location);
+                id
+            }
+        }
+    }
+
+    /// Adds a memory mapping. The id of the mapping is derived from the hash of the code region and should
+    /// be unique.
+    pub fn add_mapping(
+        &mut self,
+        id: u64,
+        start: u64,
+        end: u64,
+        offset: u64,
+        filename: &str,
+        build_id: &str,
+    ) -> u64 {
+        let mapping = pprof::Mapping {
+            id,
+            memory_start: start,
+            memory_limit: end,
+            file_offset: offset,
+            filename: self.get_or_insert_string(filename),
+            build_id: self.get_or_insert_string(build_id),
+            has_functions: false,
+            has_filenames: false,
+            has_line_numbers: false,
+            has_inline_frames: false,
+        };
+
+        match self.known_mappings.entry(mapping.id) {
+            Entry::Occupied(o) => {
+                return *o.get();
+            }
+            Entry::Vacant(v) => {
+                let id = self.mappings.len() as u64 + 1;
+                v.insert(id);
+                self.mappings.push(mapping);
+                id
+            }
+        }
+    }
+    pub fn add_sample(&mut self, location_ids: Vec<u64>, count: i64, labels: Vec<pprof::Label>) {
+        let sample = pprof::Sample {
+            location_id: location_ids, // from the source code: `The leaf is at location_id\[0\].`
+            value: vec![count, count * 1_000_000_000 / self.freq_in_hz],
+            label: labels,
+        };
+
+        self.samples.push(sample);
+    }
+
+    pub fn new_label(&mut self, key: &str, value: LabelStringOrNumber) -> pprof::Label {
+        let mut label = pprof::Label {
+            key: self.get_or_insert_string(key),
+            ..Default::default()
+        };
+
+        match value {
+            LabelStringOrNumber::String(string) => {
+                label.str = self.get_or_insert_string(&string);
+            }
+            LabelStringOrNumber::Number(num, unit) => {
+                label.num = num;
+                label.num_unit = self.get_or_insert_string(&unit);
+            }
+        }
+
+        label
+    }
+
+    pub fn profile(mut self) -> pprof::Profile {
+        let sample_type = pprof::ValueType {
+            r#type: self.get_or_insert_string("samples"),
+            unit: self.get_or_insert_string("count"),
+        };
+
+        let period_type = pprof::ValueType {
+            r#type: self.get_or_insert_string("cpu"),
+            unit: self.get_or_insert_string("nanoseconds"),
+        };
+
+        // Used to identify profiles generated by lightswitch.
+        // This is useful because the mapping ID is used in a non-standard way
+        // which should not be interpreted like this by other pprof sources.
+        let comments = vec![self.get_or_insert_string("lightswitch")];
+
+        pprof::Profile {
+            sample_type: vec![sample_type, period_type],
+            sample: self.samples,
+            mapping: self.mappings,
+            location: self.locations,
+            function: self.functions,
+            string_table: self.string_table,
+            drop_frames: 0,
+            keep_frames: 0,
+            // TODO: change this to send the time when the profile was collected.
+            time_nanos: SystemTime::now()
+                .duration_since(SystemTime::UNIX_EPOCH)
+                .unwrap()
+                .as_nanos() as i64,
+            duration_nanos: self.duration.as_nanos() as i64,
+            period_type: Some(period_type),
+            period: 1_000_000_000 / self.freq_in_hz,
+            comment: comments,
+            default_sample_type: 0,
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    // Cheat sheet:
+    // - decode protobuf: `protoc --decode perftools.profiles.Profile src/proto/profile.proto < profile.pb`
+    // - validate it: (in pprof's codebase) `go tool pprof profile.pb`
+    // - print it: `go tool pprof -raw profile.pb`
+    // - http server: `go tool pprof -http=:8080 profile.pb`
+    use prost::Message;
+
+    use super::*;
+
+    #[test]
+    fn test_string_table() {
+        let mut pprof = PprofBuilder::new(Duration::from_secs(5), 27);
+        assert_eq!(pprof.get_or_insert_string("hi"), 1);
+        assert_eq!(pprof.get_or_insert_string("salut"), 2);
+        assert_eq!(pprof.string_table, vec!["", "hi", "salut"]);
+
+        assert!(pprof.string_id("").is_some());
+        assert!(pprof.string_id("hi").is_some());
+        assert!(pprof.string_id("salut").is_some());
+        assert!(pprof.string_id("-_-").is_none());
+    }
+
+    #[test]
+    fn test_mappings() {
+        let mut pprof = PprofBuilder::new(Duration::from_secs(5), 27);
+        assert_eq!(
+            pprof.add_mapping(0, 0x100, 0x200, 0x0, "file.so", "sha256-abc"),
+            1
+        );
+        assert_eq!(
+            pprof.add_mapping(1, 0x200, 0x400, 0x100, "libc.so", "sha256-bad"),
+            2
+        );
+        assert_eq!(pprof.mappings[0].memory_start, 0x100);
+        assert_eq!(
+            pprof.mappings[0].filename,
+            pprof.string_id("file.so").unwrap()
+        );
+    }
+
+    #[test]
+    fn test_locations() {
+        let mut pprof = PprofBuilder::new(Duration::from_secs(5), 27);
+        let _ = pprof.add_line("hahahaha-first-line");
+        let (line, function_id) = pprof.add_line("test-line");
+
+        assert_eq!(pprof.add_location(0x123, 0x1111, vec![line.clone()]), 1);
+        assert_eq!(pprof.add_location(0x123, 0x1111, vec![line.clone()]), 1);
+        assert_eq!(pprof.add_location(0x256, 0x2222, vec![line.clone()]), 2);
+        assert_eq!(pprof.add_location(0x512, 0x3333, vec![line.clone()]), 3);
+
+        assert_eq!(pprof.locations.len(), 3);
+        assert_eq!(
+            pprof.locations[0],
+            pprof::Location {
+                id: 1, // The IDs are incremental and start with 1.
+                mapping_id: 0x1111,
+                address: 0x123,
+                line: vec![pprof::Line {
+                    function_id,
+                    ..Default::default()
+                }],
+                is_folded: false
+            }
+        );
+    }
+
+    #[test]
+    fn test_sample() {
+        let mut pprof = PprofBuilder::new(Duration::from_secs(5), 27);
+        let labels = vec![
+            pprof.new_label("key", LabelStringOrNumber::String("value".into())),
+            pprof.new_label("key", LabelStringOrNumber::Number(123, "pid".into())),
+        ];
+        pprof.add_sample(vec![1, 2, 3], 100, labels.clone());
+        pprof.add_sample(vec![1, 2, 3], 100, labels);
+
+        assert_eq!(pprof.samples.len(), 2);
+        assert_eq!(
+            pprof.samples[0].label,
+            vec![
+                pprof::Label {
+                    key: pprof.string_id("key").unwrap(),
+                    str: pprof.string_id("value").unwrap(),
+                    ..Default::default()
+                },
+                pprof::Label {
+                    key: pprof.string_id("key").unwrap(),
+                    num: 123,
+                    num_unit: pprof.string_id("pid").unwrap(),
+                    ..Default::default()
+                }
+            ]
+        );
+    }
+
+    #[test]
+    fn test_profile() {
+        use rand::Rng;
+        use std::fs::File;
+        use std::io::Write;
+
+        let mut rng = rand::thread_rng();
+        let mut pprof = PprofBuilder::new(Duration::from_secs(5), 27);
+        let raw_samples = vec![
+            (vec![123], 200),
+            (vec![0, 20, 30, 40, 50], 900),
+            (vec![1, 2, 3, 4, 5, 99999], 2000),
+        ];
+
+        for raw_sample in raw_samples {
+            let mut location_ids = Vec::new();
+            let count = raw_sample.1;
+
+            for addr in raw_sample.0 {
+                let mapping_id: u64 = pprof.add_mapping(
+                    if addr == 0 { 1 } else { addr }, // id 0 is reserved and can't be used.
+                    rng.gen(),
+                    rng.gen(),
+                    rng.gen(),
+                    if addr % 2 == 0 { "fake.so" } else { "test.so" },
+                    if addr % 2 == 0 {
+                        "sha256-fake"
+                    } else {
+                        "golang-fake"
+                    },
+                );
+                location_ids.push(pprof.add_location(addr, mapping_id, vec![]));
+            }
+
+            pprof.add_sample(location_ids, count, vec![]);
+        }
+
+        assert!(pprof.validate().is_ok());
+        pprof.profile();
+    }
+}
diff --git a/lightswitch-proto/src/protos/profile.proto b/lightswitch-proto/src/protos/profile.proto
new file mode 100644
index 0000000..c7a475a
--- /dev/null
+++ b/lightswitch-proto/src/protos/profile.proto
@@ -0,0 +1,227 @@
+// Copyright 2016 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Profile is a common stacktrace profile format.
+//
+// Measurements represented with this format should follow the
+// following conventions:
+//
+// - Consumers should treat unset optional fields as if they had been
+//   set with their default value.
+//
+// - When possible, measurements should be stored in "unsampled" form
+//   that is most useful to humans.  There should be enough
+//   information present to determine the original sampled values.
+//
+// - On-disk, the serialized proto must be gzip-compressed.
+//
+// - The profile is represented as a set of samples, where each sample
+//   references a sequence of locations, and where each location belongs
+//   to a mapping.
+// - There is a N->1 relationship from sample.location_id entries to
+//   locations. For every sample.location_id entry there must be a
+//   unique Location with that id.
+// - There is an optional N->1 relationship from locations to
+//   mappings. For every nonzero Location.mapping_id there must be a
+//   unique Mapping with that id.
+
+syntax = "proto3";
+
+package perftools.profiles;
+
+option java_outer_classname = "ProfileProto";
+option java_package = "com.google.perftools.profiles";
+
+message Profile {
+  // A description of the samples associated with each Sample.value.
+  // For a cpu profile this might be:
+  //   [["cpu","nanoseconds"]] or [["wall","seconds"]] or [["syscall","count"]]
+  // For a heap profile, this might be:
+  //   [["allocations","count"], ["space","bytes"]],
+  // If one of the values represents the number of events represented
+  // by the sample, by convention it should be at index 0 and use
+  // sample_type.unit == "count".
+  repeated ValueType sample_type = 1;
+  // The set of samples recorded in this profile.
+  repeated Sample sample = 2;
+  // Mapping from address ranges to the image/binary/library mapped
+  // into that address range.  mapping[0] will be the main binary.
+  repeated Mapping mapping = 3;
+  // Locations referenced by samples.
+  repeated Location location = 4;
+  // Functions referenced by locations.
+  repeated Function function = 5;
+  // A common table for strings referenced by various messages.
+  // string_table[0] must always be "".
+  repeated string string_table = 6;
+  // frames with Function.function_name fully matching the following
+  // regexp will be dropped from the samples, along with their successors.
+  int64 drop_frames = 7; // Index into string table.
+  // frames with Function.function_name fully matching the following
+  // regexp will be kept, even if it matches drop_frames.
+  int64 keep_frames = 8; // Index into string table.
+
+  // The following fields are informational, do not affect
+  // interpretation of results.
+
+  // Time of collection (UTC) represented as nanoseconds past the epoch.
+  int64 time_nanos = 9;
+  // Duration of the profile, if a duration makes sense.
+  int64 duration_nanos = 10;
+  // The kind of events between sampled occurrences.
+  // e.g [ "cpu","cycles" ] or [ "heap","bytes" ]
+  ValueType period_type = 11;
+  // The number of events between sampled occurrences.
+  int64 period = 12;
+  // Free-form text associated with the profile. The text is displayed as is
+  // to the user by the tools that read profiles (e.g. by pprof). This field
+  // should not be used to store any machine-readable information, it is only
+  // for human-friendly content. The profile must stay functional if this field
+  // is cleaned.
+  repeated int64 comment = 13; // Indices into string table.
+  // Index into the string table of the type of the preferred sample
+  // value. If unset, clients should default to the last sample value.
+  int64 default_sample_type = 14;
+}
+
+// ValueType describes the semantics and measurement units of a value.
+message ValueType {
+  int64 type = 1; // Index into string table.
+  int64 unit = 2; // Index into string table.
+}
+
+// Each Sample records values encountered in some program
+// context. The program context is typically a stack trace, perhaps
+// augmented with auxiliary information like the thread-id, some
+// indicator of a higher level request being handled etc.
+message Sample {
+  // The ids recorded here correspond to a Profile.location.id.
+  // The leaf is at location_id[0].
+  repeated uint64 location_id = 1;
+  // The type and unit of each value is defined by the corresponding
+  // entry in Profile.sample_type. All samples must have the same
+  // number of values, the same as the length of Profile.sample_type.
+  // When aggregating multiple samples into a single sample, the
+  // result has a list of values that is the element-wise sum of the
+  // lists of the originals.
+  repeated int64 value = 2;
+  // label includes additional context for this sample. It can include
+  // things like a thread id, allocation size, etc.
+  //
+  // NOTE: While possible, having multiple values for the same label key is
+  // strongly discouraged and should never be used. Most tools (e.g. pprof) do
+  // not have good (or any) support for multi-value labels. And an even more
+  // discouraged case is having a string label and a numeric label of the same
+  // name on a sample.  Again, possible to express, but should not be used.
+  repeated Label label = 3;
+}
+
+message Label {
+  // Index into string table. An annotation for a sample (e.g.
+  // "allocation_size") with an associated value.
+  // Keys with "pprof::" prefix are reserved for internal use by pprof.
+  int64 key = 1;
+
+  // At most one of the following must be present
+  int64 str = 2; // Index into string table
+  int64 num = 3;
+
+  // Should only be present when num is present.
+  // Specifies the units of num.
+  // Use arbitrary string (for example, "requests") as a custom count unit.
+  // If no unit is specified, consumer may apply heuristic to deduce the unit.
+  // Consumers may also  interpret units like "bytes" and "kilobytes" as memory
+  // units and units like "seconds" and "nanoseconds" as time units,
+  // and apply appropriate unit conversions to these.
+  int64 num_unit = 4; // Index into string table
+}
+
+message Mapping {
+  // Unique nonzero id for the mapping.
+  uint64 id = 1;
+  // Address at which the binary (or DLL) is loaded into memory.
+  uint64 memory_start = 2;
+  // The limit of the address range occupied by this mapping.
+  uint64 memory_limit = 3;
+  // Offset in the binary that corresponds to the first mapped address.
+  uint64 file_offset = 4;
+  // The object this entry is loaded from.  This can be a filename on
+  // disk for the main binary and shared libraries, or virtual
+  // abstractions like "[vdso]".
+  int64 filename = 5; // Index into string table
+  // A string that uniquely identifies a particular program version
+  // with high probability. E.g., for binaries generated by GNU tools,
+  // it could be the contents of the .note.gnu.build-id field.
+  int64 build_id = 6; // Index into string table
+
+  // The following fields indicate the resolution of symbolic info.
+  bool has_functions = 7;
+  bool has_filenames = 8;
+  bool has_line_numbers = 9;
+  bool has_inline_frames = 10;
+}
+
+// Describes function and line table debug information.
+message Location {
+  // Unique nonzero id for the location.  A profile could use
+  // instruction addresses or any integer sequence as ids.
+  uint64 id = 1;
+  // The id of the corresponding profile.Mapping for this location.
+  // It can be unset if the mapping is unknown or not applicable for
+  // this profile type.
+  uint64 mapping_id = 2;
+  // The instruction address for this location, if available.  It
+  // should be within [Mapping.memory_start...Mapping.memory_limit]
+  // for the corresponding mapping. A non-leaf address may be in the
+  // middle of a call instruction. It is up to display tools to find
+  // the beginning of the instruction if necessary.
+  uint64 address = 3;
+  // Multiple line indicates this location has inlined functions,
+  // where the last entry represents the caller into which the
+  // preceding entries were inlined.
+  //
+  // E.g., if memcpy() is inlined into printf:
+  //    line[0].function_name == "memcpy"
+  //    line[1].function_name == "printf"
+  repeated Line line = 4;
+  // Provides an indication that multiple symbols map to this location's
+  // address, for example due to identical code folding by the linker. In that
+  // case the line information above represents one of the multiple
+  // symbols. This field must be recomputed when the symbolization state of the
+  // profile changes.
+  bool is_folded = 5;
+}
+
+message Line {
+  // The id of the corresponding profile.Function for this line.
+  uint64 function_id = 1;
+  // Line number in source code.
+  int64 line = 2;
+  // Column number in source code.
+  int64 column = 3;
+}
+
+message Function {
+  // Unique nonzero id for the function.
+  uint64 id = 1;
+  // Name of the function, in human-readable form if available.
+  int64 name = 2; // Index into string table
+  // Name of the function, as identified by the system.
+  // For instance, it can be a C++ mangled name.
+  int64 system_name = 3; // Index into string table
+  // Source file containing the function.
+  int64 filename = 4; // Index into string table
+  // Line number in source file.
+  int64 start_line = 5;
+}
diff --git a/src/collector.rs b/src/collector.rs
index c8edc29..910df50 100644
--- a/src/collector.rs
+++ b/src/collector.rs
@@ -1,30 +1,135 @@
+use prost::Message;
 use std::collections::HashMap;
 use std::sync::{Arc, Mutex};
+use std::time::Duration;
 use tracing::{debug, span, Level};
 
 use crate::object::ExecutableId;
+use crate::profile::{symbolize_profile, to_proto};
 use crate::profiler::ProcessInfo;
 use crate::profiler::RawAggregatedProfile;
 use crate::profiler::{ObjectFileInfo, RawAggregatedSample};
 
-pub struct Collector {
-    profiles: Vec<RawAggregatedProfile>,
+pub trait Collector {
+    fn collect(
+        &mut self,
+        profile: RawAggregatedProfile,
+        procs: &HashMap<i32, ProcessInfo>,
+        objs: &HashMap<ExecutableId, ObjectFileInfo>,
+    );
+    fn finish(
+        &self,
+    ) -> (
+        RawAggregatedProfile,
+        &HashMap<i32, ProcessInfo>,
+        &HashMap<ExecutableId, ObjectFileInfo>,
+    );
+}
+
+pub type ThreadSafeCollector = Arc<Mutex<Box<dyn Collector + Send>>>;
+
+#[derive(Default)]
+pub struct NullCollector {
     procs: HashMap<i32, ProcessInfo>,
     objs: HashMap<ExecutableId, ObjectFileInfo>,
 }
 
-type ThreadSafeCollector = Arc<Mutex<Collector>>;
+impl NullCollector {
+    pub fn new() -> Self {
+        Self::default()
+    }
+}
 
-impl Collector {
-    pub fn new() -> ThreadSafeCollector {
-        Arc::new(Mutex::new(Self {
-            profiles: Vec::new(),
-            procs: HashMap::new(),
-            objs: HashMap::new(),
-        }))
+/// Discards the profile, useful for testing.
+impl Collector for NullCollector {
+    fn collect(
+        &mut self,
+        _profile: RawAggregatedProfile,
+        _procs: &HashMap<i32, ProcessInfo>,
+        _objs: &HashMap<ExecutableId, ObjectFileInfo>,
+    ) {
     }
 
-    pub fn collect(
+    fn finish(
+        &self,
+    ) -> (
+        RawAggregatedProfile,
+        &HashMap<i32, ProcessInfo>,
+        &HashMap<ExecutableId, ObjectFileInfo>,
+    ) {
+        (RawAggregatedProfile::new(), &self.procs, &self.objs)
+    }
+}
+
+#[derive(Default)]
+pub struct StreamingCollector {
+    pprof_ingest_url: String,
+    timeout: Duration,
+    procs: HashMap<i32, ProcessInfo>,
+    objs: HashMap<ExecutableId, ObjectFileInfo>,
+}
+
+impl StreamingCollector {
+    pub fn new(pprof_ingest_url: &str) -> Self {
+        Self {
+            pprof_ingest_url: pprof_ingest_url.into(),
+            timeout: Duration::from_secs(30),
+            ..Default::default()
+        }
+    }
+}
+
+/// POSTs the pprof formatted profiles to the given url.
+impl Collector for StreamingCollector {
+    fn collect(
+        &mut self,
+        profile: RawAggregatedProfile,
+        procs: &HashMap<i32, ProcessInfo>,
+        objs: &HashMap<ExecutableId, ObjectFileInfo>,
+    ) {
+        let _span = span!(Level::DEBUG, "StreamingCollector.finish").entered();
+
+        let symbolized_profile = symbolize_profile(&profile, procs, objs);
+        let pprof_builder = to_proto(symbolized_profile, procs, objs);
+        let pprof = pprof_builder.profile();
+
+        let client_builder = reqwest::blocking::Client::builder().timeout(self.timeout);
+        let client = client_builder.build().unwrap();
+        let response = client
+            .post(self.pprof_ingest_url.clone())
+            .body(pprof.encode_to_vec())
+            .send();
+
+        tracing::debug!("http response: {:?}", response);
+    }
+
+    fn finish(
+        &self,
+    ) -> (
+        RawAggregatedProfile,
+        &HashMap<i32, ProcessInfo>,
+        &HashMap<ExecutableId, ObjectFileInfo>,
+    ) {
+        (RawAggregatedProfile::new(), &self.procs, &self.objs)
+    }
+}
+
+#[derive(Default)]
+pub struct AggregatorCollector {
+    profiles: Vec<RawAggregatedProfile>,
+    procs: HashMap<i32, ProcessInfo>,
+    objs: HashMap<ExecutableId, ObjectFileInfo>,
+}
+
+impl AggregatorCollector {
+    pub fn new() -> Self {
+        Self::default()
+    }
+}
+
+/// Aggregagates the samples in memory, which might be acceptable when profiling for short amounts of time.
+impl Collector for AggregatorCollector {
+    fn collect(
         &mut self,
         profile: RawAggregatedProfile,
         procs: &HashMap<i32, ProcessInfo>,
@@ -51,14 +156,14 @@ impl Collector {
         }
     }
 
-    pub fn finish(
+    fn finish(
         &self,
     ) -> (
         RawAggregatedProfile,
         &HashMap<i32, ProcessInfo>,
         &HashMap<ExecutableId, ObjectFileInfo>,
     ) {
-        let _span: span::EnteredSpan = span!(Level::DEBUG, "symbolize_profiles").entered();
+        let _span = span!(Level::DEBUG, "AggregatorCollector.finish").entered();
 
         let mut samples_count = HashMap::new();
         for profile in &self.profiles {
diff --git a/src/main.rs b/src/main.rs
index 6dd8971..49cd36b 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,24 +1,26 @@
 use std::error::Error;
 use std::fs::File;
 use std::io::IsTerminal;
+use std::io::Write;
 use std::ops::RangeInclusive;
 use std::panic;
 use std::path::PathBuf;
+use std::sync::{Arc, Mutex};
 use std::time::Duration;
 
 use clap::Parser;
-
 use inferno::flamegraph;
+use lightswitch::collector::{AggregatorCollector, Collector, NullCollector, StreamingCollector};
 use nix::unistd::Uid;
 use primal::is_prime;
+use prost::Message;
 use tracing::{error, Level};
 use tracing_subscriber::fmt::format::FmtSpan;
 use tracing_subscriber::FmtSubscriber;
 
-use lightswitch::collector::Collector;
 use lightswitch::object::ObjectFile;
-use lightswitch::profile::fold_profile;
 use lightswitch::profile::symbolize_profile;
+use lightswitch::profile::{fold_profile, to_proto};
 use lightswitch::profiler::Profiler;
 use lightswitch::unwind_info::in_memory_unwind_info;
 use lightswitch::unwind_info::remove_redundant;
@@ -26,6 +28,7 @@ use lightswitch::unwind_info::remove_unnecesary_markers;
 use lightswitch::unwind_info::UnwindInfoBuilder;
 
 const SAMPLE_FREQ_RANGE: RangeInclusive<usize> = 1..=1009;
+const PPROF_INGEST_URL: &str = "http://localhost:4567/pprof/new";
 
 fn parse_duration(arg: &str) -> Result<Duration, std::num::ParseIntError> {
     let seconds = arg.parse()?;
@@ -86,10 +89,19 @@ enum LoggingLevel {
 
 #[derive(clap::ValueEnum, Debug, Clone, Default)]
 enum ProfileFormat {
+    None,
     #[default]
     FlameGraph,
-    /// Do not produce a profile. Used for kernel tests.
+    Pprof,
+}
+
+#[derive(PartialEq, clap::ValueEnum, Debug, Clone, Default)]
+enum ProfileSender {
+    /// Discard the profile. Used for kernel tests.
     None,
+    #[default]
+    LocalDisk,
+    Remote,
 }
 
 #[derive(Parser, Debug)]
@@ -135,9 +147,11 @@ struct Cli {
     #[arg(long, default_value_t, value_enum)]
     profile_format: ProfileFormat,
     /// Name for the generated profile.
-    // TODO: change suffix depending on the format.
-    #[arg(long, default_value = "flame.svg")]
-    profile_name: PathBuf,
+    #[arg(long)]
+    profile_name: Option<PathBuf>,
+    /// Where to write the profile.
+    #[arg(long, default_value_t, value_enum)]
+    sender: ProfileSender,
 }
 
 /// Exit the main thread if any thread panics. We prefer this behaviour because pretty much every
@@ -203,7 +217,15 @@ fn main() -> Result<(), Box<dyn Error>> {
         std::process::exit(1);
     }
 
-    let collector = Collector::new();
+    let collector = Arc::new(Mutex::new(match args.sender {
+        ProfileSender::None => Box::new(NullCollector::new()) as Box<dyn Collector + Send>,
+        ProfileSender::LocalDisk => {
+            Box::new(AggregatorCollector::new()) as Box<dyn Collector + Send>
+        }
+        ProfileSender::Remote => {
+            Box::new(StreamingCollector::new(PPROF_INGEST_URL)) as Box<dyn Collector + Send>
+        }
+    }));
 
     let mut p: Profiler<'_> = Profiler::new(
         args.libbpf_logs,
@@ -216,6 +238,16 @@ fn main() -> Result<(), Box<dyn Error>> {
 
     let collector = collector.lock().unwrap();
     let (raw_profile, procs, objs) = collector.finish();
+
+    // If we need to send the profile to the backend there's nothing else to do.
+    match args.sender {
+        ProfileSender::Remote | ProfileSender::None => {
+            return Ok(());
+        }
+        _ => {}
+    }
+
+    // Otherwise let's symbolize the profile and write it to disk.
     let symbolized_profile = symbolize_profile(&raw_profile, procs, objs);
 
     match args.profile_format {
@@ -223,13 +255,30 @@ fn main() -> Result<(), Box<dyn Error>> {
             let folded = fold_profile(symbolized_profile);
             let mut options: flamegraph::Options<'_> = flamegraph::Options::default();
             let data = folded.as_bytes();
-            let f = File::create(args.profile_name).unwrap();
+            let f = File::create(args.profile_name.unwrap_or_else(|| "flame.svg".into())).unwrap();
             match flamegraph::from_reader(&mut options, data, f) {
                 Ok(_) => {
-                    eprintln!("Profile successfully written to disk");
+                    eprintln!("Flamegraph profile successfully written to disk");
+                }
+                Err(e) => {
+                    error!("Failed generate flamegraph: {:?}", e);
+                }
+            }
+        }
+        ProfileFormat::Pprof => {
+            let mut buffer = Vec::new();
+            let proto = to_proto(symbolized_profile, procs, objs);
+            proto.validate().unwrap();
+            proto.profile().encode(&mut buffer).unwrap();
+            let mut pprof_file =
+                File::create(args.profile_name.unwrap_or_else(|| "profile.pb".into())).unwrap();
+
+            match pprof_file.write_all(&buffer) {
+                Ok(_) => {
+                    eprintln!("Pprof profile successfully written to disk");
                 }
                 Err(e) => {
-                    error!("Failed generate profile: {:?}", e);
+                    error!("Failed generate pprof: {:?}", e);
                 }
             }
         }
@@ -263,7 +312,7 @@ mod tests {
         let actual = String::from_utf8(cmd.unwrap().stdout).unwrap();
         insta::assert_yaml_snapshot!(actual, @r###"
         ---
-        "Usage: lightswitch [OPTIONS]\n\nOptions:\n      --pids <PIDS>\n          Specific PIDs to profile\n\n      --tids <TIDS>\n          Specific TIDs to profile (these can be outside the PIDs selected above)\n\n      --show-unwind-info <PATH_TO_BINARY>\n          Show unwind info for given binary\n\n      --show-info <PATH_TO_BINARY>\n          Show build ID for given binary\n\n  -D, --duration <DURATION>\n          How long this agent will run in seconds\n          \n          [default: 18446744073709551615]\n\n      --libbpf-logs\n          Enable libbpf logs. This includes the BPF verifier output\n\n      --bpf-logging\n          Enable BPF programs logging\n\n      --logging <LOGGING>\n          Set lightswitch's logging level\n          \n          [default: info]\n          [possible values: trace, debug, info, warn, error]\n\n      --sample-freq <SAMPLE_FREQ_IN_HZ>\n          Per-CPU Sampling Frequency in Hz\n          \n          [default: 19]\n\n      --profile-format <PROFILE_FORMAT>\n          Output file for Flame Graph in SVG format\n          \n          [default: flame-graph]\n\n          Possible values:\n          - flame-graph\n          - none:        Do not produce a profile. Used for kernel tests\n\n      --profile-name <PROFILE_NAME>\n          Name for the generated profile\n          \n          [default: flame.svg]\n\n  -h, --help\n          Print help (see a summary with '-h')\n"
+        "Usage: lightswitch [OPTIONS]\n\nOptions:\n      --pids <PIDS>\n          Specific PIDs to profile\n\n      --tids <TIDS>\n          Specific TIDs to profile (these can be outside the PIDs selected above)\n\n      --show-unwind-info <PATH_TO_BINARY>\n          Show unwind info for given binary\n\n      --show-info <PATH_TO_BINARY>\n          Show build ID for given binary\n\n  -D, --duration <DURATION>\n          How long this agent will run in seconds\n          \n          [default: 18446744073709551615]\n\n      --libbpf-logs\n          Enable libbpf logs. This includes the BPF verifier output\n\n      --bpf-logging\n          Enable BPF programs logging\n\n      --logging <LOGGING>\n          Set lightswitch's logging level\n          \n          [default: info]\n          [possible values: trace, debug, info, warn, error]\n\n      --sample-freq <SAMPLE_FREQ_IN_HZ>\n          Per-CPU Sampling Frequency in Hz\n          \n          [default: 19]\n\n      --profile-format <PROFILE_FORMAT>\n          Output file for Flame Graph in SVG format\n          \n          [default: flame-graph]\n          [possible values: none, flame-graph, pprof]\n\n      --profile-name <PROFILE_NAME>\n          Name for the generated profile\n\n      --sender <SENDER>\n          Where to write the profile\n          \n          [default: local-disk]\n\n          Possible values:\n          - none:       Discard the profile. Used for kernel tests\n          - local-disk\n          - remote\n\n  -h, --help\n          Print help (see a summary with '-h')\n"
         "###);
     }
 
diff --git a/src/object.rs b/src/object.rs
index 01e3059..20ef043 100644
--- a/src/object.rs
+++ b/src/object.rs
@@ -1,3 +1,6 @@
+use std::fmt;
+use std::fmt::Display;
+use std::fmt::Formatter;
 use std::fs;
 use std::io::Read;
 use std::path::PathBuf;
@@ -30,6 +33,22 @@ pub struct ElfLoad {
     pub vaddr: u64,
 }
 
+impl Display for BuildId {
+    fn fmt(&self, f: &mut Formatter) -> fmt::Result {
+        match self {
+            BuildId::Gnu(build_id) => {
+                write!(f, "gnu-{}", build_id)
+            }
+            BuildId::Go(build_id) => {
+                write!(f, "go-{}", build_id)
+            }
+            BuildId::Sha256(build_id) => {
+                write!(f, "sha256-{}", build_id)
+            }
+        }
+    }
+}
+
 #[derive(Debug)]
 pub struct ObjectFile<'a> {
     leaked_mmap_ptr: *const memmap2::Mmap,
diff --git a/src/profile.rs b/src/profile.rs
index 1fef0b3..adc8ba9 100644
--- a/src/profile.rs
+++ b/src/profile.rs
@@ -1,12 +1,14 @@
+use lightswitch_proto::profile::LabelStringOrNumber;
+use lightswitch_proto::profile::PprofBuilder;
 use std::collections::HashMap;
 use std::fmt::Write;
 use std::path::PathBuf;
+use std::time::Duration;
 use tracing::{debug, error, span, Level};
 
 use crate::bpf::profiler_bindings::native_stack_t;
 use crate::ksym::KsymIter;
 use crate::object::ExecutableId;
-use crate::profiler::ExecutableMapping;
 use crate::profiler::Frame;
 use crate::profiler::FrameAddress;
 use crate::profiler::ObjectFileInfo;
@@ -16,7 +18,102 @@ use crate::profiler::SymbolizedAggregatedProfile;
 use crate::profiler::SymbolizedAggregatedSample;
 use crate::usym::symbolize_native_stack_blaze;
 
-/// Converts a symbolized aggregated profiles to their folded representation that most flamegraph renderers use.
+/// Converts a given symbolized profile to Google's pprof.
+pub fn to_proto(
+    profile: SymbolizedAggregatedProfile,
+    procs: &HashMap<i32, ProcessInfo>,
+    objs: &HashMap<ExecutableId, ObjectFileInfo>,
+) -> PprofBuilder {
+    let mut pprof = PprofBuilder::new(Duration::from_secs(5), 27);
+
+    for sample in profile {
+        let pid = sample.pid;
+        let ustack = sample.ustack;
+        let kstack = sample.kstack;
+        let mut location_ids = Vec::new();
+
+        for kframe in kstack {
+            // TODO: Add real values, read kernel build ID, etc.
+            let mapping_id: u64 = pprof.add_mapping(
+                0x1000000,
+                0xFFFFFFFF,
+                0xFFFFFFFF,
+                0x0,
+                "[kernel]", // This is a special marker.
+                "fake_kernel_build_id",
+            );
+
+            let (line, _) = pprof.add_line(&kframe.name);
+            let location = pprof.add_location(kframe.virtual_address, mapping_id, vec![line]);
+            location_ids.push(location);
+        }
+
+        for uframe in ustack {
+            let addr = uframe.virtual_address;
+
+            let Some(info) = procs.get(&pid) else {
+                // r.push("<could not find process>".to_string());
+                continue;
+            };
+
+            let Some(mapping) = info.mappings.for_address(addr) else {
+                // r.push("<could not find mapping>".to_string());
+                continue;
+            };
+
+            match objs.get(&mapping.executable_id) {
+                Some(obj) => {
+                    let normalized_addr = addr - mapping.start_addr + mapping.offset
+                        - obj.load_offset
+                        + obj.load_vaddr;
+
+                    let build_id = match mapping.build_id {
+                        Some(build_id) => {
+                            format!("{}", build_id)
+                        }
+                        None => "no-build-id".into(),
+                    };
+                    let mapping_id: u64 = pprof.add_mapping(
+                        mapping.executable_id,
+                        mapping.start_addr,
+                        mapping.end_addr,
+                        mapping.offset,
+                        obj.path.to_str().expect("convert path to str"),
+                        &build_id,
+                    );
+
+                    // TODO, ensure address normalization is correct
+                    // normalized_addr == uframe.file_offset.unwrap()
+
+                    let (line, _) = pprof.add_line(&uframe.name);
+                    let location = pprof.add_location(normalized_addr, mapping_id, vec![line]);
+                    location_ids.push(location);
+                }
+                None => {
+                    debug!("build id not found");
+                }
+            }
+        }
+
+        let labels = vec![
+            pprof.new_label(
+                "pid",
+                LabelStringOrNumber::Number(pid.into(), "task-tgid".into()),
+            ),
+            pprof.new_label(
+                "pid",
+                LabelStringOrNumber::Number(pid.into(), "task-id".into()),
+            ),
+            pprof.new_label("comm", LabelStringOrNumber::String("fake-comm".into())),
+        ];
+
+        pprof.add_sample(location_ids, sample.count as i64, labels);
+    }
+
+    pprof
+}
+
+/// Converts a collection of symbolized aggregated profiles to their folded representation that most flamegraph renderers use.
 /// Folded stacks look like this:
 ///
 /// > base_frame;other_frame;top_frame 100
@@ -182,17 +279,7 @@ pub fn symbolize_profile(
     r
 }
 
-fn find_mapping(mappings: &[ExecutableMapping], addr: u64) -> Option<ExecutableMapping> {
-    for mapping in mappings {
-        if mapping.start_addr <= addr && addr <= mapping.end_addr {
-            return Some(mapping.clone());
-        }
-    }
-
-    None
-}
-
-fn fetch_symbols_for_profile(
+pub fn fetch_symbols_for_profile(
     profile: &RawAggregatedProfile,
     procs: &HashMap<i32, ProcessInfo>,
     objs: &HashMap<ExecutableId, ObjectFileInfo>,
@@ -214,7 +301,7 @@ fn fetch_symbols_for_profile(
                 continue;
             }
 
-            let Some(mapping) = find_mapping(&info.mappings, addr) else {
+            let Some(mapping) = info.mappings.for_address(addr) else {
                 continue; //return Err(anyhow!("could not find mapping"));
             };
 
@@ -279,7 +366,7 @@ fn symbolize_native_stack(
             continue;
         };
 
-        let Some(mapping) = find_mapping(&info.mappings, addr) else {
+        let Some(mapping) = info.mappings.for_address(addr) else {
             r.push(Frame::with_error("<could not find mapping>".to_string()));
             continue;
         };
diff --git a/src/profiler.rs b/src/profiler.rs
index fe6414a..f18c274 100644
--- a/src/profiler.rs
+++ b/src/profiler.rs
@@ -49,7 +49,7 @@ pub enum ProcessStatus {
 #[derive(Clone)]
 pub struct ProcessInfo {
     pub status: ProcessStatus,
-    pub mappings: Vec<ExecutableMapping>,
+    pub mappings: ExecutableMappings,
 }
 
 pub struct ObjectFileInfo {
@@ -84,6 +84,21 @@ pub struct ExecutableMapping {
     // Add (inode, ctime) and whether the file is in the root namespace
 }
 
+#[derive(Clone)]
+pub struct ExecutableMappings(Vec<ExecutableMapping>);
+
+impl ExecutableMappings {
+    pub fn for_address(&self, addr: u64) -> Option<ExecutableMapping> {
+        for mapping in &self.0 {
+            if mapping.start_addr <= addr && addr <= mapping.end_addr {
+                return Some(mapping.clone());
+            }
+        }
+
+        None
+    }
+}
+
 impl ExecutableMapping {
     fn mark_as_deleted(&mut self, object_files: &mut HashMap<ExecutableId, ObjectFileInfo>) {
         // Avoid decrementing the reference count logic more than once if called multiple times.
@@ -205,7 +220,7 @@ pub struct FrameAddress {
     pub file_offset: u64,
 }
 
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, Hash, Eq, PartialEq)]
 pub struct Frame {
     /// Address from the process, as collected from the BPF program.
     pub virtual_address: u64,
@@ -233,7 +248,7 @@ impl Frame {
     }
 }
 
-#[derive(Default, Debug)]
+#[derive(Default, Debug, Hash, Eq, PartialEq)]
 pub struct SymbolizedAggregatedSample {
     pub pid: i32,
     pub tid: i32,
@@ -362,7 +377,7 @@ impl Profiler<'_> {
             .expect("handle send");
     }
 
-    pub fn run(mut self, collector: Arc<Mutex<Collector>>) {
+    pub fn run(mut self, collector: ThreadSafeCollector) {
         // In this case, we only want to calculate maximum sampling buffer sizes based on the
         // number of online CPUs, NOT possible CPUs, when they differ - which is often.
         let num_cpus = get_online_cpus().expect("get online CPUs").len() as u64;
@@ -513,7 +528,7 @@ impl Profiler<'_> {
             Some(proc_info) => {
                 debug!("marking process {} as exited", pid);
                 proc_info.status = ProcessStatus::Exited;
-                for mapping in &mut proc_info.mappings {
+                for mapping in &mut proc_info.mappings.0 {
                     let mut object_files = self.object_files.lock().expect("lock");
                     mapping.mark_as_deleted(&mut object_files);
                 }
@@ -529,7 +544,7 @@ impl Profiler<'_> {
 
         match procs.get_mut(&pid) {
             Some(proc_info) => {
-                for mapping in &mut proc_info.mappings {
+                for mapping in &mut proc_info.mappings.0 {
                     if mapping.start_addr <= start_address && start_address <= mapping.end_addr {
                         debug!("found memory mapping starting at {:x} for pid {} while handling munmap", start_address, pid);
                         let mut object_files = self.object_files.lock().expect("lock");
@@ -765,6 +780,7 @@ impl Profiler<'_> {
             .get(&pid)
             .unwrap()
             .mappings
+            .0
             .iter()
         {
             if self.native_unwind_state.shard_index > MAX_SHARDS {
@@ -1229,7 +1245,7 @@ impl Profiler<'_> {
         mappings.sort_by_key(|k| k.start_addr.cmp(&k.start_addr));
         let proc_info = ProcessInfo {
             status: ProcessStatus::Running,
-            mappings,
+            mappings: ExecutableMappings(mappings),
         };
         self.procs
             .clone()
diff --git a/tests/integration_test.rs b/tests/integration_test.rs
index 94e6212..7e8c4cb 100644
--- a/tests/integration_test.rs
+++ b/tests/integration_test.rs
@@ -1,9 +1,10 @@
 use std::io;
 use std::io::Write;
 use std::process::{Child, Command, Stdio};
+use std::sync::{Arc, Mutex};
 use std::time::Duration;
 
-use lightswitch::collector::Collector;
+use lightswitch::collector::{AggregatorCollector, Collector};
 use lightswitch::profile::symbolize_profile;
 use lightswitch::profiler::Profiler;
 use lightswitch::profiler::SymbolizedAggregatedProfile;
@@ -93,7 +94,9 @@ fn test_integration() {
     build_test_binary("cpp-progs");
     let cpp_proc = TestProcess::new("main_cpp_clang_O1");
 
-    let collector = Collector::new();
+    let collector = Arc::new(Mutex::new(
+        Box::new(AggregatorCollector::new()) as Box<dyn Collector + Send>
+    ));
     let mut p = Profiler::new(bpf_test_debug, bpf_test_debug, Duration::from_secs(5), 999);
     p.profile_pids(vec![cpp_proc.pid()]);
     p.run(collector.clone());
diff --git a/vm.nix b/vm.nix
index 8a7311a..c91e81f 100644
--- a/vm.nix
+++ b/vm.nix
@@ -87,32 +87,32 @@ let
       [[target]]
       name = "Fedora 5.15"
       kernel = "${kernel_5_15}/bzImage"
-      command = "${lightswitch}/bin/lightswitch --duration 0 --profile-format=none"
+      command = "${lightswitch}/bin/lightswitch --duration 0 --sender=none"
 
       [[target]]
       name = "Fedora 6.0"
       kernel = "${kernel_6_0}/bzImage"
-      command = "${lightswitch}/bin/lightswitch --duration 0 --profile-format=none"
+      command = "${lightswitch}/bin/lightswitch --duration 0 --sender=none"
 
       [[target]]
       name = "Fedora 6.2"
       kernel = "${kernel_6_2}/bzImage"
-      command = "${lightswitch}/bin/lightswitch --duration 0 --profile-format=none"
+      command = "${lightswitch}/bin/lightswitch --duration 0 --sender=none"
 
       [[target]]
       name = "Fedora 6.6"
       kernel = "${kernel_6_6}/bzImage"
-      command = "${lightswitch}/bin/lightswitch --duration 0 --profile-format=none"
+      command = "${lightswitch}/bin/lightswitch --duration 0 --sender=none"
 
       [[target]]
       name = "Upstream 6.8.7"
       kernel = "${kernel_6_8_7}/bzImage"
-      command = "${lightswitch}/bin/lightswitch --duration 0 --profile-format=none"
+      command = "${lightswitch}/bin/lightswitch --duration 0 --sender=none"
 
       [[target]]
       name = "Upstream v6.9-rc5"
       kernel = "${kernel_6_9_rc5}/bzImage"
-      command = "${lightswitch}/bin/lightswitch --duration 0 --profile-format=none"
+      command = "${lightswitch}/bin/lightswitch --duration 0 --sender=none"
     '';
     nativeBuildInputs = [ ];
     installPhase = ''