6568cef868
[kamal-proxy](https://github.com/basecamp/kamal-proxy) is a custom minimal proxy designed specifically for Kamal. It has some advantages over Traefik: 1. Imperative deployments - we tell it to switch from container A to container B, and it waits for container B to start then switches. No need to poll for health checks ourselves or mess around with forcing health checks to fail. 2. Support for multiple apps - as much as possible, configuration is supplied at runtime by the deploy command, allowing us to have multiple apps share a proxy without conflicting config. 3. First class support for Kamal operations - rather than trying to work out how to make Traefik do what we want, we can build features directly into the proxy, making configuration simpler and avoiding obscure errors
37 lines
1.4 KiB
Ruby
37 lines
1.4 KiB
Ruby
require "test_helper"
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class CommandsPruneTest < ActiveSupport::TestCase
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setup do
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@config = {
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service: "app", image: "dhh/app", registry: { "username" => "dhh", "password" => "secret" }, servers: [ "1.1.1.1" ]
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}
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end
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test "dangling images" do
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assert_equal \
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"docker image prune --force --filter label=service=app",
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new_command.dangling_images.join(" ")
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end
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test "tagged images" do
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assert_equal \
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"docker image ls --filter label=service=app --format '{{.ID}} {{.Repository}}:{{.Tag}}' | grep -v -w \"$(docker container ls -a --format '{{.Image}}\\|' --filter label=service=app | tr -d '\\n')dhh/app:latest\\|dhh/app:<none>\" | while read image tag; do docker rmi $tag; done",
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new_command.tagged_images.join(" ")
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end
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test "app containers" do
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assert_equal \
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"docker ps -q -a --filter label=service=app --filter status=created --filter status=exited --filter status=dead | tail -n +6 | while read container_id; do docker rm $container_id; done",
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new_command.app_containers(retain: 5).join(" ")
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assert_equal \
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"docker ps -q -a --filter label=service=app --filter status=created --filter status=exited --filter status=dead | tail -n +4 | while read container_id; do docker rm $container_id; done",
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new_command.app_containers(retain: 3).join(" ")
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end
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private
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def new_command
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Kamal::Commands::Prune.new(Kamal::Configuration.new(@config, version: "123"))
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end
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end
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