Add kamal

.kamal/hooks/docker-setup.sample

@@ -0,0 +1,3 @@
+#!/bin/sh
+
+echo "Docker set up on $KAMAL_HOSTS..."

.kamal/hooks/post-deploy.sample

@@ -0,0 +1,14 @@
+#!/bin/sh
+
+# A sample post-deploy hook
+#
+# These environment variables are available:
+# KAMAL_RECORDED_AT
+# KAMAL_PERFORMER
+# KAMAL_VERSION
+# KAMAL_HOSTS
+# KAMAL_ROLE (if set)
+# KAMAL_DESTINATION (if set)
+# KAMAL_RUNTIME
+
+echo "$KAMAL_PERFORMER deployed $KAMAL_VERSION to $KAMAL_DESTINATION in $KAMAL_RUNTIME seconds"

.kamal/hooks/post-proxy-reboot.sample

@@ -0,0 +1,3 @@
+#!/bin/sh
+
+echo "Rebooted kamal-proxy on $KAMAL_HOSTS"

.kamal/hooks/pre-build.sample

@@ -0,0 +1,51 @@
+#!/bin/sh
+
+# A sample pre-build hook
+#
+# Checks:
+# 1. We have a clean checkout
+# 2. A remote is configured
+# 3. The branch has been pushed to the remote
+# 4. The version we are deploying matches the remote
+#
+# These environment variables are available:
+# KAMAL_RECORDED_AT
+# KAMAL_PERFORMER
+# KAMAL_VERSION
+# KAMAL_HOSTS
+# KAMAL_ROLE (if set)
+# KAMAL_DESTINATION (if set)
+
+if [ -n "$(git status --porcelain)" ]; then
+  echo "Git checkout is not clean, aborting..." >&2
+  git status --porcelain >&2
+  exit 1
+fi
+
+first_remote=$(git remote)
+
+if [ -z "$first_remote" ]; then
+  echo "No git remote set, aborting..." >&2
+  exit 1
+fi
+
+current_branch=$(git branch --show-current)
+
+if [ -z "$current_branch" ]; then
+  echo "Not on a git branch, aborting..." >&2
+  exit 1
+fi
+
+remote_head=$(git ls-remote $first_remote --tags $current_branch | cut -f1)
+
+if [ -z "$remote_head" ]; then
+  echo "Branch not pushed to remote, aborting..." >&2
+  exit 1
+fi
+
+if [ "$KAMAL_VERSION" != "$remote_head" ]; then
+  echo "Version ($KAMAL_VERSION) does not match remote HEAD ($remote_head), aborting..." >&2
+  exit 1
+fi
+
+exit 0

.kamal/hooks/pre-connect.sample

@@ -0,0 +1,47 @@
+#!/usr/bin/env ruby
+
+# A sample pre-connect check
+#
+# Warms DNS before connecting to hosts in parallel
+#
+# These environment variables are available:
+# KAMAL_RECORDED_AT
+# KAMAL_PERFORMER
+# KAMAL_VERSION
+# KAMAL_HOSTS
+# KAMAL_ROLE (if set)
+# KAMAL_DESTINATION (if set)
+# KAMAL_RUNTIME
+
+hosts = ENV["KAMAL_HOSTS"].split(",")
+results = nil
+max = 3
+
+elapsed = Benchmark.realtime do
+  results = hosts.map do |host|
+    Thread.new do
+      tries = 1
+
+      begin
+        Socket.getaddrinfo(host, 0, Socket::AF_UNSPEC, Socket::SOCK_STREAM, nil, Socket::AI_CANONNAME)
+      rescue SocketError
+        if tries < max
+          puts "Retrying DNS warmup: #{host}"
+          tries += 1
+          sleep rand
+          retry
+        else
+          puts "DNS warmup failed: #{host}"
+          host
+        end
+      end
+
+      tries
+    end
+  end.map(&:value)
+end
+
+retries = results.sum - hosts.size
+nopes = results.count { |r| r == max }
+
+puts "Prewarmed %d DNS lookups in %.2f sec: %d retries, %d failures" % [ hosts.size, elapsed, retries, nopes ]

.kamal/hooks/pre-deploy.sample

@@ -0,0 +1,109 @@
+#!/usr/bin/env ruby
+
+# A sample pre-deploy hook
+#
+# Checks the Github status of the build, waiting for a pending build to complete for up to 720 seconds.
+#
+# Fails unless the combined status is "success"
+#
+# These environment variables are available:
+# KAMAL_RECORDED_AT
+# KAMAL_PERFORMER
+# KAMAL_VERSION
+# KAMAL_HOSTS
+# KAMAL_COMMAND
+# KAMAL_SUBCOMMAND
+# KAMAL_ROLE (if set)
+# KAMAL_DESTINATION (if set)
+
+# Only check the build status for production deployments
+if ENV["KAMAL_COMMAND"] == "rollback" || ENV["KAMAL_DESTINATION"] != "production"
+  exit 0
+end
+
+require "bundler/inline"
+
+# true = install gems so this is fast on repeat invocations
+gemfile(true, quiet: true) do
+  source "https://rubygems.org"
+
+  gem "octokit"
+  gem "faraday-retry"
+end
+
+MAX_ATTEMPTS = 72
+ATTEMPTS_GAP = 10
+
+def exit_with_error(message)
+  $stderr.puts message
+  exit 1
+end
+
+class GithubStatusChecks
+  attr_reader :remote_url, :git_sha, :github_client, :combined_status
+
+  def initialize
+    @remote_url = `git config --get remote.origin.url`.strip.delete_prefix("https://github.com/")
+    @git_sha = `git rev-parse HEAD`.strip
+    @github_client = Octokit::Client.new(access_token: ENV["GITHUB_TOKEN"])
+    refresh!
+  end
+
+  def refresh!
+    @combined_status = github_client.combined_status(remote_url, git_sha)
+  end
+
+  def state
+    combined_status[:state]
+  end
+
+  def first_status_url
+    first_status = combined_status[:statuses].find { |status| status[:state] == state }
+    first_status && first_status[:target_url]
+  end
+
+  def complete_count
+    combined_status[:statuses].count { |status| status[:state] != "pending"}
+  end
+
+  def total_count
+    combined_status[:statuses].count
+  end
+
+  def current_status
+    if total_count > 0
+      "Completed #{complete_count}/#{total_count} checks, see #{first_status_url} ..."
+    else
+      "Build not started..."
+    end
+  end
+end
+
+
+$stdout.sync = true
+
+puts "Checking build status..."
+attempts = 0
+checks = GithubStatusChecks.new
+
+begin
+  loop do
+    case checks.state
+    when "success"
+      puts "Checks passed, see #{checks.first_status_url}"
+      exit 0
+    when "failure"
+      exit_with_error "Checks failed, see #{checks.first_status_url}"
+    when "pending"
+      attempts += 1
+    end
+
+    exit_with_error "Checks are still pending, gave up after #{MAX_ATTEMPTS * ATTEMPTS_GAP} seconds" if attempts == MAX_ATTEMPTS
+
+    puts checks.current_status
+    sleep(ATTEMPTS_GAP)
+    checks.refresh!
+  end
+rescue Octokit::NotFound
+  exit_with_error "Build status could not be found"
+end

.kamal/hooks/pre-proxy-reboot.sample

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+#!/bin/sh
+
+echo "Rebooting kamal-proxy on $KAMAL_HOSTS..."

.kamal/secrets

@@ -0,0 +1,19 @@
+# Secrets defined here are available for reference under registry/password, env/secret, builder/secrets,
+# and accessories/*/env/secret in config/deploy.yml. All secrets should be pulled from either
+# password manager, ENV, or a file. DO NOT ENTER RAW CREDENTIALS HERE! This file needs to be safe for git.
+
+# Option 1: Read secrets from the environment
+KAMAL_REGISTRY_PASSWORD=$KAMAL_REGISTRY_PASSWORD
+
+# Option 2: Read secrets via a command
+# RAILS_MASTER_KEY=$(cat config/master.key)
+
+# Option 3: Read secrets via kamal secrets helpers
+# These will handle logging in and fetching the secrets in as few calls as possible
+# There are adapters for 1Password, LastPass + Bitwarden
+#
+# SECRETS=$(kamal secrets fetch --adapter 1password --account my-account --from MyVault/MyItem KAMAL_REGISTRY_PASSWORD RAILS_MASTER_KEY)
+# KAMAL_REGISTRY_PASSWORD=$(kamal secrets extract KAMAL_REGISTRY_PASSWORD $SECRETS)
+# RAILS_MASTER_KEY=$(kamal secrets extract RAILS_MASTER_KEY $SECRETS)
+
+ACCESS_KEYS=$(cat src/main/resources/application.yaml)

Dockerfile

@@ -2,11 +2,13 @@
 
 FROM eclipse-temurin:21.0.4_7-jdk-alpine
 RUN apk add --update npm
+WORKDIR /app
 COPY . .
-RUN --mount=type=secret,id=application_yaml,dst=application.yaml cp application.yaml src/main/resources/application.yaml
+RUN --mount=type=secret,id=ACCESS_KEYS,dst=ACCESS_KEYS.yaml cp ACCESS_KEYS.yaml src/main/resources/application.yaml
 RUN cd frontend && npm ci && npm run build
 RUN chmod +x gradlew && ./gradlew -PcopyFrontend build
 
 FROM eclipse-temurin:21.0.4_7-jre-alpine
-COPY --from=0 /build/libs/polybacs-0.0.1-SNAPSHOT.jar app.jar
-ENTRYPOINT ["java","-jar","app.jar"]
+WORKDIR /app
+COPY --from=0 /app/build/libs/polybacs-0.0.1-SNAPSHOT.jar app.jar
+ENTRYPOINT ["java","-jar","app.jar"]

config/deploy.yml

@@ -0,0 +1,100 @@
+# Name of your application. Used to uniquely configure containers.
+service: polybacs
+
+# Name of the container image.
+image: jvmusin/polybacs
+
+# Deploy to these servers.
+servers:
+  web:
+    - 37.27.184.59
+  # job:
+  #   hosts:
+  #     - 192.168.0.1
+  #   cmd: bin/jobs
+
+# Enable SSL auto certification via Let's Encrypt (and allow for multiple apps on one server).
+# If using something like Cloudflare, it is recommended to set encryption mode 
+# in Cloudflare's SSL/TLS setting to "Full" to enable end-to-end encryption. 
+proxy:
+  ssl: true
+  host: polybacs.jvmusin.dev
+  # kamal-proxy connects to your container over port 80, use `app_port` to specify a different port.
+  app_port: 8080
+  healthcheck:
+    path: /actuator/health
+
+# Credentials for your image host.
+registry:
+  # Specify the registry server, if you're not using Docker Hub
+  # server: registry.digitalocean.com / ghcr.io / ...
+  username: jvmusin
+
+  # Always use an access token rather than real password (pulled from .kamal/secrets).
+  password:
+    - KAMAL_REGISTRY_PASSWORD
+
+# Configure builder setup.
+builder:
+  arch: amd64
+  secrets:
+    - ACCESS_KEYS
+
+# Inject ENV variables into containers (secrets come from .kamal/secrets).
+#
+#env:
+#  secret:
+#    - KAMAL_REGISTRY_PASSWORD
+#  ACCESS_KEYS: HELLO
+
+# Aliases are triggered with "bin/kamal <alias>". You can overwrite arguments on invocation:
+# "bin/kamal logs -r job" will tail logs from the first server in the job section.
+#
+# aliases:
+#   shell: app exec --interactive --reuse "bash"
+
+# Use a different ssh user than root
+#
+# ssh:
+#   user: app
+
+# Use a persistent storage volume.
+#
+# volumes:
+#   - "app_storage:/app/storage"
+
+# Bridge fingerprinted assets, like JS and CSS, between versions to avoid
+# hitting 404 on in-flight requests. Combines all files from new and old
+# version inside the asset_path.
+#
+# asset_path: /app/public/assets
+
+# Configure rolling deploys by setting a wait time between batches of restarts.
+#
+# boot:
+#   limit: 10 # Can also specify as a percentage of total hosts, such as "25%"
+#   wait: 2
+
+# Use accessory services (secrets come from .kamal/secrets).
+#
+# accessories:
+#   db:
+#     image: mysql:8.0
+#     host: 192.168.0.2
+#     port: 3306
+#     env:
+#       clear:
+#         MYSQL_ROOT_HOST: '%'
+#       secret:
+#         - MYSQL_ROOT_PASSWORD
+#     files:
+#       - config/mysql/production.cnf:/etc/mysql/my.cnf
+#       - db/production.sql:/docker-entrypoint-initdb.d/setup.sql
+#     directories:
+#       - data:/var/lib/mysql
+#   redis:
+#     image: redis:7.0
+#     host: 192.168.0.2
+#     port: 6379
+#     directories:
+#       - data:/data