add kamal config, closes #1169, closes #1173

.env.example

@@ -0,0 +1,38 @@
+############
+# Database
+############
+
+POSTGRES_HOST=localhost
+POSTGRES_USER=postgres
+POSTGRES_PASSWORD=""
+POSTGRES_PORT=5432
+
+############
+# Dev Container Environement Variables
+############
+DEV_SERVER_IP=127.0.0.1
+DEV_SECRET_KEY_BASE=k/B2/h3nrn+XIwYaLZcc7cIAKfUihj9gLwm/IrtzNhx6daOLRax2xAzDCRoiHCNuH1iPOlMhp9aD91HJ
+DEV_DATABASE_URL=ecto://$POSTGRES_USER:$POSTGRES_PASSWORD@$POSTGRES_HOST:$POSTGRES_PORT/animina_dev
+DEV_PHX_HOST=dev.animina.de
+DEV_PORT=4300
+DEV_FILE_VOLUME_PATH=/etc/animina/dev/
+DEV_CONTAINER_IMAGE="animina/animina-dev"
+
+############
+# Prod Container Environement Variables
+############
+PROD_SERVER_IP=127.0.0.1
+PROD_SECRET_KEY_BASE=l8m2Yg9DmUzyC/onSZuzd2yR0UZbPTw3a8fRwMLDZqyhF1TuPdPys5pv/7rAo8xN12ZtuOW46kVEWBpy
+PROD_DATABASE_URL=ecto://$POSTGRES_USER:$POSTGRES_PASSWORD@$POSTGRES_HOST:$POSTGRES_PORT/animina
+PROD_PHX_HOST=animina.de
+PROD_PORT=4310
+PROD_FILE_VOLUME_PATH=/etc/animina/prod/
+PROD_CONTAINER_IMAGE="animina/animina-prod"
+
+############
+# Shared Environement Variables
+############
+DISABLE_ML_FEATURES="true"
+KAMAL_REGISTRY_USERNAME="animina"
+KAMAL_REGISTRY_PASSWORD=""
+REMOTE_BUILDER_SSH_URL="ssh://root@$DEV_SERVER_IP"

.gitignore

@@ -45,4 +45,5 @@ npm-debug.log
 
 .env.test
 .env.dev
+.env
 

.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

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

.kamal/secrets-common

@@ -0,0 +1,2 @@
+KAMAL_REGISTRY_USERNAME=$KAMAL_REGISTRY_USERNAME
+KAMAL_REGISTRY_PASSWORD=$KAMAL_REGISTRY_PASSWORD

.kamal/secrets.dev

@@ -0,0 +1,10 @@
+SERVER_IP=$DEV_SERVER_IP
+SECRET_KEY_BASE=$DEV_SECRET_KEY_BASE
+DATABASE_URL=$DEV_DATABASE_URL
+PHX_HOST=$DEV_PHX_HOST
+PORT=$DEV_PORT
+FILE_VOLUME_PATH=$DEV_FILE_VOLUME_PATH
+DISABLE_ML_FEATURES=$DISABLE_ML_FEATURES
+KAMAL_REGISTRY_USERNAME=$KAMAL_REGISTRY_USERNAME
+KAMAL_REGISTRY_PASSWORD=$KAMAL_REGISTRY_PASSWORD
+CONTAINER_IMAGE=$DEV_CONTAINER_IMAGE

.kamal/secrets.prod

@@ -0,0 +1,10 @@
+SERVER_IP=$PROD_SERVER_IP
+SECRET_KEY_BASE=$PROD_SECRET_KEY_BASE
+DATABASE_URL=$PROD_DATABASE_URL
+PHX_HOST=$PROD_PHX_HOST
+PORT=$PROD_PORT
+FILE_VOLUME_PATH=$PROD_FILE_VOLUME_PATH
+DISABLE_ML_FEATURES=$DISABLE_ML_FEATURES
+KAMAL_REGISTRY_USERNAME=$KAMAL_REGISTRY_USERNAME
+KAMAL_REGISTRY_PASSWORD=$KAMAL_REGISTRY_PASSWORD
+CONTAINER_IMAGE=$PROD_CONTAINER_IMAGE

Dockerfile

@@ -21,7 +21,7 @@ ARG RUNNER_IMAGE="debian:${DEBIAN_VERSION}"
 FROM ${BUILDER_IMAGE} as builder
 
 # install build dependencies
-RUN apt-get update -y && apt-get install -y build-essential git \
+RUN apt-get update -y && apt-get install -y build-essential git curl \
     && apt-get clean && rm -f /var/lib/apt/lists/*_*
 
 #Install nodejs
@@ -55,7 +55,7 @@ COPY lib lib
 
 COPY assets assets
 
-RUN cd assets && yarn install
+RUN cd assets && npm install
 
 # compile assets
 RUN mix assets.deploy
@@ -74,7 +74,7 @@ RUN mix release
 FROM ${RUNNER_IMAGE}
 
 RUN apt-get update -y && \
-  apt-get install -y libstdc++6 openssl libncurses5 locales ca-certificates \
+  apt-get install -y libstdc++6 openssl libncurses5 locales ca-certificates curl \
   && apt-get clean && rm -f /var/lib/apt/lists/*_*
 
 # Set the locale
@@ -100,4 +100,6 @@ USER nobody
 # above and adding an entrypoint. See https://github.com/krallin/tini for details
 # ENTRYPOINT ["/tini", "--"]
 
+EXPOSE 4000
+
 CMD ["sh", "-c", "/app/bin/migrate && exec /app/bin/server"]