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.
384 lines
21 KiB
Ruby
384 lines
21 KiB
Ruby
require "test_helper"
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class CommandsAppTest < ActiveSupport::TestCase
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setup do
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ENV["RAILS_MASTER_KEY"] = "456"
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Kamal::Configuration.any_instance.stubs(:run_id).returns("12345678901234567890123456789012")
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@config = { service: "app", image: "dhh/app", registry: { "username" => "dhh", "password" => "secret" }, servers: [ "1.1.1.1" ], env: { "secret" => [ "RAILS_MASTER_KEY" ] } }
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end
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teardown do
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ENV.delete("RAILS_MASTER_KEY")
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end
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test "run" do
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assert_equal \
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"docker run --detach --restart unless-stopped --name app-web-999 -e KAMAL_CONTAINER_NAME=\"app-web-999\" --env-file .kamal/env/roles/app-web.env --health-cmd \"(curl -f http://localhost:3000/up || exit 1) && (stat /tmp/kamal-cord/cord > /dev/null || exit 1)\" --health-interval \"1s\" --volume $(pwd)/.kamal/cords/app-web-12345678901234567890123456789012:/tmp/kamal-cord --log-opt max-size=\"10m\" --label service=\"app\" --label role=\"web\" --label traefik.http.services.app-web.loadbalancer.server.scheme=\"http\" --label traefik.http.routers.app-web.rule=\"PathPrefix(\\`/\\`)\" --label traefik.http.middlewares.app-web-retry.retry.attempts=\"5\" --label traefik.http.middlewares.app-web-retry.retry.initialinterval=\"500ms\" --label traefik.http.routers.app-web.middlewares=\"app-web-retry@docker\" dhh/app:999",
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new_command.run.join(" ")
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end
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test "run with hostname" do
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assert_equal \
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"docker run --detach --restart unless-stopped --name app-web-999 --hostname myhost -e KAMAL_CONTAINER_NAME=\"app-web-999\" --env-file .kamal/env/roles/app-web.env --health-cmd \"(curl -f http://localhost:3000/up || exit 1) && (stat /tmp/kamal-cord/cord > /dev/null || exit 1)\" --health-interval \"1s\" --volume $(pwd)/.kamal/cords/app-web-12345678901234567890123456789012:/tmp/kamal-cord --log-opt max-size=\"10m\" --label service=\"app\" --label role=\"web\" --label traefik.http.services.app-web.loadbalancer.server.scheme=\"http\" --label traefik.http.routers.app-web.rule=\"PathPrefix(\\`/\\`)\" --label traefik.http.middlewares.app-web-retry.retry.attempts=\"5\" --label traefik.http.middlewares.app-web-retry.retry.initialinterval=\"500ms\" --label traefik.http.routers.app-web.middlewares=\"app-web-retry@docker\" dhh/app:999",
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new_command.run(hostname: "myhost").join(" ")
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end
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test "run with volumes" do
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@config[:volumes] = ["/local/path:/container/path" ]
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assert_equal \
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"docker run --detach --restart unless-stopped --name app-web-999 -e KAMAL_CONTAINER_NAME=\"app-web-999\" --env-file .kamal/env/roles/app-web.env --health-cmd \"(curl -f http://localhost:3000/up || exit 1) && (stat /tmp/kamal-cord/cord > /dev/null || exit 1)\" --health-interval \"1s\" --volume $(pwd)/.kamal/cords/app-web-12345678901234567890123456789012:/tmp/kamal-cord --log-opt max-size=\"10m\" --volume /local/path:/container/path --label service=\"app\" --label role=\"web\" --label traefik.http.services.app-web.loadbalancer.server.scheme=\"http\" --label traefik.http.routers.app-web.rule=\"PathPrefix(\\`/\\`)\" --label traefik.http.middlewares.app-web-retry.retry.attempts=\"5\" --label traefik.http.middlewares.app-web-retry.retry.initialinterval=\"500ms\" --label traefik.http.routers.app-web.middlewares=\"app-web-retry@docker\" dhh/app:999",
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new_command.run.join(" ")
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end
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test "run with custom healthcheck path" do
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@config[:healthcheck] = { "path" => "/healthz" }
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assert_equal \
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"docker run --detach --restart unless-stopped --name app-web-999 -e KAMAL_CONTAINER_NAME=\"app-web-999\" --env-file .kamal/env/roles/app-web.env --health-cmd \"(curl -f http://localhost:3000/healthz || exit 1) && (stat /tmp/kamal-cord/cord > /dev/null || exit 1)\" --health-interval \"1s\" --volume $(pwd)/.kamal/cords/app-web-12345678901234567890123456789012:/tmp/kamal-cord --log-opt max-size=\"10m\" --label service=\"app\" --label role=\"web\" --label traefik.http.services.app-web.loadbalancer.server.scheme=\"http\" --label traefik.http.routers.app-web.rule=\"PathPrefix(\\`/\\`)\" --label traefik.http.middlewares.app-web-retry.retry.attempts=\"5\" --label traefik.http.middlewares.app-web-retry.retry.initialinterval=\"500ms\" --label traefik.http.routers.app-web.middlewares=\"app-web-retry@docker\" dhh/app:999",
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new_command.run.join(" ")
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end
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test "run with custom healthcheck command" do
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@config[:healthcheck] = { "cmd" => "/bin/up" }
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assert_equal \
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"docker run --detach --restart unless-stopped --name app-web-999 -e KAMAL_CONTAINER_NAME=\"app-web-999\" --env-file .kamal/env/roles/app-web.env --health-cmd \"(/bin/up) && (stat /tmp/kamal-cord/cord > /dev/null || exit 1)\" --health-interval \"1s\" --volume $(pwd)/.kamal/cords/app-web-12345678901234567890123456789012:/tmp/kamal-cord --log-opt max-size=\"10m\" --label service=\"app\" --label role=\"web\" --label traefik.http.services.app-web.loadbalancer.server.scheme=\"http\" --label traefik.http.routers.app-web.rule=\"PathPrefix(\\`/\\`)\" --label traefik.http.middlewares.app-web-retry.retry.attempts=\"5\" --label traefik.http.middlewares.app-web-retry.retry.initialinterval=\"500ms\" --label traefik.http.routers.app-web.middlewares=\"app-web-retry@docker\" dhh/app:999",
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new_command.run.join(" ")
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end
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test "run with role-specific healthcheck options" do
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@config[:servers] = { "web" => { "hosts" => [ "1.1.1.1" ], "healthcheck" => { "cmd" => "/bin/healthy" } } }
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assert_equal \
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"docker run --detach --restart unless-stopped --name app-web-999 -e KAMAL_CONTAINER_NAME=\"app-web-999\" --env-file .kamal/env/roles/app-web.env --health-cmd \"(/bin/healthy) && (stat /tmp/kamal-cord/cord > /dev/null || exit 1)\" --health-interval \"1s\" --volume $(pwd)/.kamal/cords/app-web-12345678901234567890123456789012:/tmp/kamal-cord --log-opt max-size=\"10m\" --label service=\"app\" --label role=\"web\" --label traefik.http.services.app-web.loadbalancer.server.scheme=\"http\" --label traefik.http.routers.app-web.rule=\"PathPrefix(\\`/\\`)\" --label traefik.http.middlewares.app-web-retry.retry.attempts=\"5\" --label traefik.http.middlewares.app-web-retry.retry.initialinterval=\"500ms\" --label traefik.http.routers.app-web.middlewares=\"app-web-retry@docker\" dhh/app:999",
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new_command.run.join(" ")
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end
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test "run with custom options" do
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@config[:servers] = { "web" => [ "1.1.1.1" ], "jobs" => { "hosts" => [ "1.1.1.2" ], "cmd" => "bin/jobs", "options" => { "mount" => "somewhere", "cap-add" => true } } }
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assert_equal \
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"docker run --detach --restart unless-stopped --name app-jobs-999 -e KAMAL_CONTAINER_NAME=\"app-jobs-999\" --env-file .kamal/env/roles/app-jobs.env --log-opt max-size=\"10m\" --label service=\"app\" --label role=\"jobs\" --mount \"somewhere\" --cap-add dhh/app:999 bin/jobs",
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new_command(role: "jobs").run.join(" ")
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end
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test "run with logging config" do
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@config[:logging] = { "driver" => "local", "options" => { "max-size" => "100m", "max-file" => "3" } }
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assert_equal \
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"docker run --detach --restart unless-stopped --name app-web-999 -e KAMAL_CONTAINER_NAME=\"app-web-999\" --env-file .kamal/env/roles/app-web.env --health-cmd \"(curl -f http://localhost:3000/up || exit 1) && (stat /tmp/kamal-cord/cord > /dev/null || exit 1)\" --health-interval \"1s\" --volume $(pwd)/.kamal/cords/app-web-12345678901234567890123456789012:/tmp/kamal-cord --log-driver \"local\" --log-opt max-size=\"100m\" --log-opt max-file=\"3\" --label service=\"app\" --label role=\"web\" --label traefik.http.services.app-web.loadbalancer.server.scheme=\"http\" --label traefik.http.routers.app-web.rule=\"PathPrefix(\\`/\\`)\" --label traefik.http.middlewares.app-web-retry.retry.attempts=\"5\" --label traefik.http.middlewares.app-web-retry.retry.initialinterval=\"500ms\" --label traefik.http.routers.app-web.middlewares=\"app-web-retry@docker\" dhh/app:999",
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new_command.run.join(" ")
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end
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test "start" do
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assert_equal \
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"docker start app-web-999",
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new_command.start.join(" ")
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end
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test "start with destination" do
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@destination = "staging"
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assert_equal \
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"docker start app-web-staging-999",
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new_command.start.join(" ")
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end
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test "stop" do
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assert_equal \
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"docker ps --quiet --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting --latest | xargs docker stop",
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new_command.stop.join(" ")
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end
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test "stop with custom stop wait time" do
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@config[:stop_wait_time] = 30
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assert_equal \
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"docker ps --quiet --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting --latest | xargs docker stop -t 30",
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new_command.stop.join(" ")
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end
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test "stop with version" do
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assert_equal \
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"docker container ls --all --filter name=^app-web-123$ --quiet | xargs docker stop",
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new_command.stop(version: "123").join(" ")
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end
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test "info" do
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assert_equal \
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"docker ps --filter label=service=app --filter label=role=web",
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new_command.info.join(" ")
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end
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test "info with destination" do
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@destination = "staging"
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assert_equal \
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"docker ps --filter label=service=app --filter label=destination=staging --filter label=role=web",
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new_command.info.join(" ")
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end
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test "logs" do
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assert_equal \
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"docker ps --quiet --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting --latest | xargs docker logs 2>&1",
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new_command.logs.join(" ")
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assert_equal \
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"docker ps --quiet --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting --latest | xargs docker logs --since 5m 2>&1",
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new_command.logs(since: "5m").join(" ")
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assert_equal \
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"docker ps --quiet --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting --latest | xargs docker logs --tail 100 2>&1",
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new_command.logs(lines: "100").join(" ")
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assert_equal \
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"docker ps --quiet --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting --latest | xargs docker logs --since 5m --tail 100 2>&1",
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new_command.logs(since: "5m", lines: "100").join(" ")
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assert_equal \
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"docker ps --quiet --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting --latest | xargs docker logs 2>&1 | grep 'my-id'",
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new_command.logs(grep: "my-id").join(" ")
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assert_equal \
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"docker ps --quiet --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting --latest | xargs docker logs --since 5m 2>&1 | grep 'my-id'",
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new_command.logs(since: "5m", grep: "my-id").join(" ")
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end
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test "follow logs" do
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assert_match \
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"docker ps --quiet --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting --latest | xargs docker logs --timestamps --tail 10 --follow 2>&1",
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new_command.follow_logs(host: "app-1")
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assert_match \
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"docker ps --quiet --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting --latest | xargs docker logs --timestamps --tail 10 --follow 2>&1 | grep \"Completed\"",
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new_command.follow_logs(host: "app-1", grep: "Completed")
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end
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test "execute in new container" do
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assert_equal \
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"docker run --rm --env-file .kamal/env/roles/app-web.env dhh/app:999 bin/rails db:setup",
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new_command.execute_in_new_container("bin/rails", "db:setup").join(" ")
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end
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test "execute in new container with custom options" do
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@config[:servers] = { "web" => { "hosts" => [ "1.1.1.1" ], "options" => { "mount" => "somewhere", "cap-add" => true } } }
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assert_equal \
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"docker run --rm --env-file .kamal/env/roles/app-web.env --mount \"somewhere\" --cap-add dhh/app:999 bin/rails db:setup",
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new_command.execute_in_new_container("bin/rails", "db:setup").join(" ")
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end
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test "execute in existing container" do
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assert_equal \
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"docker exec app-web-999 bin/rails db:setup",
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new_command.execute_in_existing_container("bin/rails", "db:setup").join(" ")
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end
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test "execute in new container over ssh" do
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assert_match %r|docker run -it --rm --env-file .kamal/env/roles/app-web.env dhh/app:999 bin/rails c|,
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new_command.execute_in_new_container_over_ssh("bin/rails", "c", host: "app-1")
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end
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test "execute in new container with custom options over ssh" do
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@config[:servers] = { "web" => { "hosts" => [ "1.1.1.1" ], "options" => { "mount" => "somewhere", "cap-add" => true } } }
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assert_match %r|docker run -it --rm --env-file .kamal/env/roles/app-web.env --mount \"somewhere\" --cap-add dhh/app:999 bin/rails c|,
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new_command.execute_in_new_container_over_ssh("bin/rails", "c", host: "app-1")
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end
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test "execute in existing container over ssh" do
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assert_match %r|docker exec -it app-web-999 bin/rails c|,
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new_command.execute_in_existing_container_over_ssh("bin/rails", "c", host: "app-1")
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end
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test "run over ssh" do
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assert_equal "ssh -t root@1.1.1.1 'ls'", new_command.run_over_ssh("ls", host: "1.1.1.1")
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end
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test "run over ssh with custom user" do
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@config[:ssh] = { "user" => "app" }
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assert_equal "ssh -t app@1.1.1.1 'ls'", new_command.run_over_ssh("ls", host: "1.1.1.1")
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end
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test "run over ssh with proxy" do
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@config[:ssh] = { "proxy" => "2.2.2.2" }
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assert_equal "ssh -J root@2.2.2.2 -t root@1.1.1.1 'ls'", new_command.run_over_ssh("ls", host: "1.1.1.1")
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end
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test "run over ssh with proxy user" do
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@config[:ssh] = { "proxy" => "app@2.2.2.2" }
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assert_equal "ssh -J app@2.2.2.2 -t root@1.1.1.1 'ls'", new_command.run_over_ssh("ls", host: "1.1.1.1")
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end
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test "run over ssh with custom user with proxy" do
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@config[:ssh] = { "user" => "app", "proxy" => "2.2.2.2" }
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assert_equal "ssh -J root@2.2.2.2 -t app@1.1.1.1 'ls'", new_command.run_over_ssh("ls", host: "1.1.1.1")
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end
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test "run over ssh with proxy_command" do
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@config[:ssh] = { "proxy_command" => "ssh -W %h:%p user@proxy-server" }
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assert_equal "ssh -o ProxyCommand='ssh -W %h:%p user@proxy-server' -t root@1.1.1.1 'ls'", new_command.run_over_ssh("ls", host: "1.1.1.1")
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end
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test "current_running_container_id" do
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assert_equal \
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"docker ps --quiet --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting --latest",
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new_command.current_running_container_id.join(" ")
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end
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test "current_running_container_id with destination" do
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@destination = "staging"
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assert_equal \
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"docker ps --quiet --filter label=service=app --filter label=destination=staging --filter label=role=web --filter status=running --filter status=restarting --latest",
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new_command.current_running_container_id.join(" ")
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end
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test "container_id_for" do
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assert_equal \
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"docker container ls --all --filter name=^app-999$ --quiet",
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new_command.container_id_for(container_name: "app-999").join(" ")
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end
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test "current_running_version" do
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assert_equal \
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"docker ps --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting --latest --format \"{{.Names}}\" | while read line; do echo ${line#app-web-}; done",
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new_command.current_running_version.join(" ")
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end
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test "list_versions" do
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assert_equal \
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"docker ps --filter label=service=app --filter label=role=web --format \"{{.Names}}\" | while read line; do echo ${line#app-web-}; done",
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new_command.list_versions.join(" ")
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assert_equal \
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"docker ps --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting --latest --format \"{{.Names}}\" | while read line; do echo ${line#app-web-}; done",
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new_command.list_versions("--latest", statuses: [ :running, :restarting ]).join(" ")
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end
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test "list_containers" do
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assert_equal \
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"docker container ls --all --filter label=service=app --filter label=role=web",
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new_command.list_containers.join(" ")
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end
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test "list_containers with destination" do
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@destination = "staging"
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assert_equal \
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"docker container ls --all --filter label=service=app --filter label=destination=staging --filter label=role=web",
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new_command.list_containers.join(" ")
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end
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test "list_container_names" do
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assert_equal \
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"docker container ls --all --filter label=service=app --filter label=role=web --format '{{ .Names }}'",
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new_command.list_container_names.join(" ")
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end
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test "remove_container" do
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assert_equal \
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"docker container ls --all --filter name=^app-web-999$ --quiet | xargs docker container rm",
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new_command.remove_container(version: "999").join(" ")
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end
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test "remove_container with destination" do
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@destination = "staging"
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assert_equal \
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"docker container ls --all --filter name=^app-web-staging-999$ --quiet | xargs docker container rm",
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new_command.remove_container(version: "999").join(" ")
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end
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test "remove_containers" do
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assert_equal \
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"docker container prune --force --filter label=service=app --filter label=role=web",
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new_command.remove_containers.join(" ")
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end
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test "remove_containers with destination" do
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@destination = "staging"
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assert_equal \
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"docker container prune --force --filter label=service=app --filter label=destination=staging --filter label=role=web",
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new_command.remove_containers.join(" ")
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end
|
|
|
|
test "list_images" do
|
|
assert_equal \
|
|
"docker image ls dhh/app",
|
|
new_command.list_images.join(" ")
|
|
end
|
|
|
|
test "remove_images" do
|
|
assert_equal \
|
|
"docker image prune --all --force --filter label=service=app --filter label=role=web",
|
|
new_command.remove_images.join(" ")
|
|
end
|
|
|
|
test "remove_images with destination" do
|
|
@destination = "staging"
|
|
assert_equal \
|
|
"docker image prune --all --force --filter label=service=app --filter label=destination=staging --filter label=role=web",
|
|
new_command.remove_images.join(" ")
|
|
end
|
|
|
|
test "tag_current_as_latest" do
|
|
assert_equal \
|
|
"docker tag dhh/app:999 dhh/app:latest",
|
|
new_command.tag_current_as_latest.join(" ")
|
|
end
|
|
|
|
test "make_env_directory" do
|
|
assert_equal "mkdir -p .kamal/env/roles", new_command.make_env_directory.join(" ")
|
|
end
|
|
|
|
test "remove_env_file" do
|
|
assert_equal "rm -f .kamal/env/roles/app-web.env", new_command.remove_env_file.join(" ")
|
|
end
|
|
|
|
test "cord" do
|
|
assert_equal "docker inspect -f '{{ range .Mounts }}{{printf \"%s %s\n\" .Source .Destination}}{{ end }}' app-web-123 | awk '$2 == \"/tmp/kamal-cord\" {print $1}'", new_command.cord(version: 123).join(" ")
|
|
end
|
|
|
|
test "tie cord" do
|
|
assert_equal "mkdir -p . ; touch cordfile", new_command.tie_cord("cordfile").join(" ")
|
|
assert_equal "mkdir -p corddir ; touch corddir/cordfile", new_command.tie_cord("corddir/cordfile").join(" ")
|
|
assert_equal "mkdir -p /corddir ; touch /corddir/cordfile", new_command.tie_cord("/corddir/cordfile").join(" ")
|
|
end
|
|
|
|
test "cut cord" do
|
|
assert_equal "rm -r corddir", new_command.cut_cord("corddir").join(" ")
|
|
end
|
|
|
|
test "extract assets" do
|
|
assert_equal [
|
|
:mkdir, "-p", ".kamal/assets/extracted/app-web-999", "&&",
|
|
:docker, :stop, "-t 1", "app-web-assets", "2> /dev/null", "|| true", "&&",
|
|
:docker, :run, "--name", "app-web-assets", "--detach", "--rm", "dhh/app:latest", "sleep 1000000", "&&",
|
|
:docker, :cp, "-L", "app-web-assets:/public/assets/.", ".kamal/assets/extracted/app-web-999", "&&",
|
|
:docker, :stop, "-t 1", "app-web-assets"
|
|
], new_command(asset_path: "/public/assets").extract_assets
|
|
end
|
|
|
|
test "sync asset volumes" do
|
|
assert_equal [
|
|
:mkdir, "-p", ".kamal/assets/volumes/app-web-999", ";",
|
|
:cp, "-rn", ".kamal/assets/extracted/app-web-999/*", ".kamal/assets/volumes/app-web-999"
|
|
], new_command(asset_path: "/public/assets").sync_asset_volumes
|
|
|
|
assert_equal [
|
|
:mkdir, "-p", ".kamal/assets/volumes/app-web-999", ";",
|
|
:cp, "-rn", ".kamal/assets/extracted/app-web-999/*", ".kamal/assets/volumes/app-web-999", ";",
|
|
:cp, "-rn", ".kamal/assets/extracted/app-web-999/*", ".kamal/assets/volumes/app-web-998", "|| true", ";",
|
|
:cp, "-rn", ".kamal/assets/extracted/app-web-998/*", ".kamal/assets/volumes/app-web-999", "|| true",
|
|
], new_command(asset_path: "/public/assets").sync_asset_volumes(old_version: 998)
|
|
end
|
|
|
|
test "clean up assets" do
|
|
assert_equal [
|
|
:find, ".kamal/assets/extracted", "-maxdepth 1", "-name", "'app-web-*'", "!", "-name", "app-web-999", "-exec rm -rf \"{}\" +", ";",
|
|
:find, ".kamal/assets/volumes", "-maxdepth 1", "-name", "'app-web-*'", "!", "-name", "app-web-999", "-exec rm -rf \"{}\" +"
|
|
], new_command(asset_path: "/public/assets").clean_up_assets
|
|
end
|
|
|
|
private
|
|
def new_command(role: "web", **additional_config)
|
|
Kamal::Commands::App.new(Kamal::Configuration.new(@config.merge(additional_config), destination: @destination, version: "999"), role: role)
|
|
end
|
|
end
|