Files
kamal/test/commands/proxy_test.rb
Donal McBreen 6568cef868 Replace Traefik with kamal-proxy
[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
2024-05-28 15:31:56 +01:00

127 lines
4.3 KiB
Ruby

require "test_helper"
class CommandsProxyTest < ActiveSupport::TestCase
setup do
@config = {
service: "app", image: "dhh/app", registry: { "username" => "dhh", "password" => "secret" }, servers: [ "1.1.1.1" ]
}
ENV["EXAMPLE_API_KEY"] = "456"
end
teardown do
ENV.delete("EXAMPLE_API_KEY")
end
test "run" do
assert_equal \
"docker run --name kamal-proxy --detach --restart unless-stopped --publish 80:80 --publish 443:443 --volume /var/run/docker.sock:/var/run/docker.sock --volume kamal-proxy:/root/.config/kamal-proxy --log-opt max-size=\"10m\" #{Kamal::Configuration::Proxy::DEFAULT_IMAGE}",
new_command.run.join(" ")
end
test "run with ports configured" do
assert_equal \
"docker run --name kamal-proxy --detach --restart unless-stopped --publish 80:80 --publish 443:443 --volume /var/run/docker.sock:/var/run/docker.sock --volume kamal-proxy:/root/.config/kamal-proxy --log-opt max-size=\"10m\" #{Kamal::Configuration::Proxy::DEFAULT_IMAGE}",
new_command.run.join(" ")
end
test "run without configuration" do
@config.delete(:proxy)
assert_equal \
"docker run --name kamal-proxy --detach --restart unless-stopped --publish 80:80 --publish 443:443 --volume /var/run/docker.sock:/var/run/docker.sock --volume kamal-proxy:/root/.config/kamal-proxy --log-opt max-size=\"10m\" #{Kamal::Configuration::Proxy::DEFAULT_IMAGE}",
new_command.run.join(" ")
end
test "run with logging config" do
@config[:logging] = { "driver" => "local", "options" => { "max-size" => "100m", "max-file" => "3" } }
assert_equal \
"docker run --name kamal-proxy --detach --restart unless-stopped --publish 80:80 --publish 443:443 --volume /var/run/docker.sock:/var/run/docker.sock --volume kamal-proxy:/root/.config/kamal-proxy --log-driver \"local\" --log-opt max-size=\"100m\" --log-opt max-file=\"3\" #{Kamal::Configuration::Proxy::DEFAULT_IMAGE}",
new_command.run.join(" ")
end
test "proxy start" do
assert_equal \
"docker container start kamal-proxy",
new_command.start.join(" ")
end
test "proxy stop" do
assert_equal \
"docker container stop kamal-proxy",
new_command.stop.join(" ")
end
test "proxy info" do
assert_equal \
"docker ps --filter name=^kamal-proxy$",
new_command.info.join(" ")
end
test "proxy logs" do
assert_equal \
"docker logs kamal-proxy --timestamps 2>&1",
new_command.logs.join(" ")
end
test "proxy logs since 2h" do
assert_equal \
"docker logs kamal-proxy --since 2h --timestamps 2>&1",
new_command.logs(since: "2h").join(" ")
end
test "proxy logs last 10 lines" do
assert_equal \
"docker logs kamal-proxy --tail 10 --timestamps 2>&1",
new_command.logs(lines: 10).join(" ")
end
test "proxy logs with grep hello!" do
assert_equal \
"docker logs kamal-proxy --timestamps 2>&1 | grep 'hello!'",
new_command.logs(grep: "hello!").join(" ")
end
test "proxy remove container" do
assert_equal \
"docker container prune --force --filter label=org.opencontainers.image.title=kamal-proxy",
new_command.remove_container.join(" ")
end
test "proxy remove image" do
assert_equal \
"docker image prune --all --force --filter label=org.opencontainers.image.title=kamal-proxy",
new_command.remove_image.join(" ")
end
test "proxy follow logs" do
assert_equal \
"ssh -t root@1.1.1.1 -p 22 'docker logs kamal-proxy --timestamps --tail 10 --follow 2>&1'",
new_command.follow_logs(host: @config[:servers].first)
end
test "proxy follow logs with grep hello!" do
assert_equal \
"ssh -t root@1.1.1.1 -p 22 'docker logs kamal-proxy --timestamps --tail 10 --follow 2>&1 | grep \"hello!\"'",
new_command.follow_logs(host: @config[:servers].first, grep: "hello!")
end
test "deploy" do
assert_equal \
"docker exec kamal-proxy kamal-proxy deploy service --target \"172.1.0.2:80\"",
new_command.deploy("service", target: "172.1.0.2:80").join(" ")
end
test "remove" do
assert_equal \
"docker exec kamal-proxy kamal-proxy remove service --target \"172.1.0.2:80\"",
new_command.remove("service", target: "172.1.0.2:80").join(" ")
end
private
def new_command
Kamal::Commands::Proxy.new(Kamal::Configuration.new(@config, version: "123"))
end
end