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devashish-patel committed Jan 26, 2024
1 parent 8168a8f commit de1ec54
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24 changes: 11 additions & 13 deletions hcl2template/types.packer_config.go
Original file line number Diff line number Diff line change
Expand Up @@ -5,7 +5,6 @@ package hcl2template

import (
"fmt"
"log"
"sort"
"strings"

Expand Down Expand Up @@ -122,24 +121,23 @@ func (cfg *PackerConfig) EvalContext(ctx BlockContext, variables map[string]cty.
},
}

packerVars := map[string]cty.Value{
"version": cty.StringVal(cfg.CorePackerVersionString),
"iterationID": cty.UnknownVal(cty.String),
"versionFingerprint": cty.UnknownVal(cty.String),
}

iterID, ok := cfg.HCPVars["iterationID"]
if ok {
log.Printf("[WARN] Deprecation: Contextual Variable `iterationID` has been deprecated packer context. " +
"Please use `versionFingerprint` variable instead.")
ectx.Variables[packerAccessor] = cty.ObjectVal(map[string]cty.Value{
"version": cty.StringVal(cfg.CorePackerVersionString),
"iterationID": iterID,
})
packerVars["iterationID"] = iterID
}

versionFingerprint, ok := cfg.HCPVars["versionFingerprint"]
versionFP, ok := cfg.HCPVars["versionFingerprint"]
if ok {
ectx.Variables[packerAccessor] = cty.ObjectVal(map[string]cty.Value{
"version": cty.StringVal(cfg.CorePackerVersionString),
"versionFingerprint": versionFingerprint,
})
packerVars["versionFingerprint"] = versionFP
}

ectx.Variables[packerAccessor] = cty.ObjectVal(packerVars)

// In the future we'd like to load and execute HCL blocks using a graph
// dependency tree, so that any block can use any block whatever the
// order.
Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -132,25 +132,48 @@ parenthesis may through off your shell escaping otherwise.

# HCP Packer Iteration ID

~> **Note**: Deprecation: Contextual Variable `iterationID` has been deprecated packer context. Please use `versionFingerprint` variable instead.
~> **Note**: The `packer.iterationID` variable is now deprecated and will be removed in a future version of Packer. HCP Packer Versions should be accessed with their fingerprint instead. The `packer.versionFingerprint` variable is now exposed to be used in its stead with the new HCP Packer data sources.

If your build is pushing metadata to the HCP Packer registry, this variable is
set to the value of the Iteration ID associated with this run.

```hcl
source "amazon-ebs" "cannonical-ubuntu-server" {
ami_name = "packer-example"
// ...
run_volume_tags = {
hcp_iteration_id = packer.iterationID
source "null" "example" {
communicator = "none"
}
data "hcp-packer-version" "hardened-source" {
bucket_name = "example"
channel_name = "latest"
}
data "hcp-packer-artifact" "file" {
bucket_name = "example"
version_fingerprint = "${data.hcp-packer-version.hardened-source.fingerprint}"
platform = "aws"
region = "us-east-1"
}
build {
hcp_packer_registry {
bucket_name = "simple"
}
sources = [
"source.null.example"
]
provisioner "shell-local" {
inline = [
"echo data is ${packer.iterationID}"
]
}
}
```

```shell-session
==> vanilla.amazon-ebs.cannonical-ubuntu-server: Adding tags to source instance
vanilla.amazon-ebs.cannonical-ubuntu-server: Adding tag: "Name": "Packer Builder"
vanilla.amazon-ebs.cannonical-ubuntu-server: Adding tag: "hcp_iteration_id": "01FHGF3M2AK4TS6PCZES4VX5E7"
==> mybuild.null.example: Running local shell script: /var/folders/cz/q3cr3tld2457gtlgw7qs1kqc0000gq/T/packer-shell842419427
mybuild.null.example: data is 01HN3KCRPVKR5PBQ28TS6B12W0
```

# HCP Packer Version Fingerprint
Expand All @@ -159,19 +182,42 @@ If your build is pushing metadata to the HCP Packer registry, this variable is
set to the value of the Version Fingerprint associated with this run.

```hcl
source "amazon-ebs" "cannonical-ubuntu-server" {
ami_name = "packer-example"
// ...
run_volume_tags = {
hcp_version_fingerprint = packer.versionFingerprint
source "null" "example" {
communicator = "none"
}
data "hcp-packer-version" "hardened-source" {
bucket_name = "example"
channel_name = "latest"
}
data "hcp-packer-artifact" "file" {
bucket_name = "example"
version_fingerprint = "${data.hcp-packer-version.hardened-source.fingerprint}"
platform = "aws"
region = "us-east-1"
}
build {
hcp_packer_registry {
bucket_name = "simple"
}
sources = [
"source.null.example"
]
provisioner "shell-local" {
inline = [
"echo data is ${packer.versionFingerprint}"
]
}
}
```

```shell-session
==> vanilla.amazon-ebs.cannonical-ubuntu-server: Adding tags to source instance
vanilla.amazon-ebs.cannonical-ubuntu-server: Adding tag: "Name": "Packer Builder"
vanilla.amazon-ebs.cannonical-ubuntu-server: Adding tag: "hcp_version_fingerprint": "01FHGF3M2AK4TS6PCZES4VX5E74tf"
==> mybuild.null.example: Running local shell script: /var/folders/cz/q3cr3tld2457gtlgw7qs1kqc0000gq/T/packer-shell842419427
mybuild.null.example: data is 01HN3KCRPVKR5PBQ28TS6B12W0
```

You can also add this value to post-processors, for example to add to a manifest file:
Expand All @@ -182,7 +228,6 @@ You can also add this value to post-processors, for example to add to a manifest
strip_path = true
custom_data = {
version_fingerprint = "${packer.versionFingerprint}"
// `packer.iterationID` has been deprecated.
iteration = "${packer.iterationID}"
}
}
Expand Down

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