0b439362da
During deployments both the old and new containers will be active for a small period of time. There also may be lagging requests for older CSS and JS after the deployment. This can lead to 404s if a request for old assets hits a new container or visa-versa. This PR makes sure that both sets of assets are available throughout the deployment from before the new version of the app is booted. This can be configured by setting the asset path: ```yaml asset_path: "/rails/public/assets" ``` The process is: 1. We extract the assets out of the container, with docker run, docker cp, docker stop. Docker run sets the container command to "sleep" so this needs to be available in the container. 2. We create an asset volume directory on the host for the new version of the app on the host and copy the assets in there. 3. If there is a previous deployment we also copy the new assets into its asset volume and copy the older assets into the new asset volume. 4. We start the new container mapping the asset volume over the top of the container's asset path. This means the both the old and new versions have replaced the asset path with a volume containing both sets of assets and should be able to serve any request during the deployment. The older assets will continue to be available until the next deployment.
81 lines
3.1 KiB
Ruby
81 lines
3.1 KiB
Ruby
require_relative "integration_test"
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class MainTest < IntegrationTest
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test "envify, deploy, redeploy, rollback, details and audit" do
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kamal :envify
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assert_local_env_file "SECRET_TOKEN=1234"
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assert_remote_env_file "SECRET_TOKEN=1234\nCLEAR_TOKEN=4321"
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first_version = latest_app_version
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assert_app_is_down
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kamal :deploy
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assert_app_is_up version: first_version
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assert_hooks_ran "pre-connect", "pre-build", "pre-deploy", "post-deploy"
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second_version = update_app_rev
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kamal :redeploy
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assert_app_is_up version: second_version
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assert_hooks_ran "pre-connect", "pre-build", "pre-deploy", "post-deploy"
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assert_accumulated_assets first_version, second_version
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kamal :rollback, first_version
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assert_hooks_ran "pre-connect", "pre-deploy", "post-deploy"
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assert_app_is_up version: first_version
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details = kamal :details, capture: true
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assert_match /Traefik Host: vm1/, details
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assert_match /Traefik Host: vm2/, details
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assert_match /App Host: vm1/, details
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assert_match /App Host: vm2/, details
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assert_match /traefik:v2.9/, details
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assert_match /registry:4443\/app:#{first_version}/, details
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audit = kamal :audit, capture: true
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assert_match /Booted app version #{first_version}.*Booted app version #{second_version}.*Booted app version #{first_version}.*/m, audit
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kamal :env, :delete
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assert_no_remote_env_file
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end
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test "config" do
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config = YAML.load(kamal(:config, capture: true))
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version = latest_app_version
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assert_equal [ "web" ], config[:roles]
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assert_equal [ "vm1", "vm2" ], config[:hosts]
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assert_equal "vm1", config[:primary_host]
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assert_equal version, config[:version]
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assert_equal "registry:4443/app", config[:repository]
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assert_equal "registry:4443/app:#{version}", config[:absolute_image]
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assert_equal "app-#{version}", config[:service_with_version]
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assert_equal [], config[:volume_args]
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assert_equal({ user: "root", auth_methods: [ "publickey" ], keepalive: true, keepalive_interval: 30, log_level: :fatal }, config[:ssh_options])
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assert_equal({ "multiarch" => false, "args" => { "COMMIT_SHA" => version } }, config[:builder])
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assert_equal [ "--log-opt", "max-size=\"10m\"" ], config[:logging]
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assert_equal({ "path" => "/up", "port" => 3000, "max_attempts" => 7, "exposed_port" => 3999, "cord"=>"/tmp/kamal-cord", "cmd"=>"wget -qO- http://localhost > /dev/null || exit 1" }, config[:healthcheck])
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end
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private
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def assert_local_env_file(contents)
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assert_equal contents, deployer_exec("cat .env", capture: true)
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end
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def assert_remote_env_file(contents)
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assert_equal contents, docker_compose("exec vm1 cat /root/.kamal/env/roles/app-web.env", capture: true)
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end
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def assert_no_remote_env_file
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assert_equal "nofile", docker_compose("exec vm1 stat /root/.kamal/env/roles/app-web.env 2> /dev/null || echo nofile", capture: true)
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end
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def assert_accumulated_assets(*versions)
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versions.each do |version|
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assert_equal "200", Net::HTTP.get_response(URI.parse("http://localhost:12345/versions/#{version}")).code
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end
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end
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end
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