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9a5880208a75113acee05751545b529361f1c8ff
kamal/test/configuration/role_test.rb
Donal McBreen 9a5880208a Rename roles 
Allow roles to be renamed without having to manually stop the old
containers.

If you have config like:

```
servers:
  jobs:
    hosts:
      - vm3
```

And you want to rename `jobs` to `workers`, you can do:

```
servers:
  workers:
    previously:
      - jobs
    hosts:
      - vm3
```

And the deployment will take care of stopping the old "jobs" containers.

Once deployed you can remove the `previously` key.
2024-04-26 11:47:57 +01:00

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require "test_helper"
class ConfigurationRoleTest < ActiveSupport::TestCase
setup do
@deploy = {
service: "app", image: "dhh/app", registry: { "username" => "dhh", "password" => "secret" },
servers: [ "1.1.1.1", "1.1.1.2" ],
env: { "REDIS_URL" => "redis://x/y" }
}
@config = Kamal::Configuration.new(@deploy)
@deploy_with_roles = @deploy.dup.merge({
servers: {
"web" => [ "1.1.1.1", "1.1.1.2" ],
"workers" => {
"hosts" => [ "1.1.1.3", "1.1.1.4" ],
"cmd" => "bin/jobs",
"env" => {
"REDIS_URL" => "redis://a/b",
"WEB_CONCURRENCY" => 4
}
}
}
})
@config_with_roles = Kamal::Configuration.new(@deploy_with_roles)
end
test "hosts" do
assert_equal [ "1.1.1.1", "1.1.1.2" ], @config.role(:web).hosts
assert_equal [ "1.1.1.3", "1.1.1.4" ], @config_with_roles.role(:workers).hosts
end
test "cmd" do
assert_nil @config.role(:web).cmd
assert_equal "bin/jobs", @config_with_roles.role(:workers).cmd
end
test "label args" do
assert_equal [ "--label", "service=\"app\"", "--label", "role=\"workers\"", "--label", "destination" ], @config_with_roles.role(:workers).label_args
end
test "special label args for web" do
assert_equal [ "--label", "service=\"app\"", "--label", "role=\"web\"", "--label", "destination", "--label", "traefik.http.services.app-web.loadbalancer.server.scheme=\"http\"", "--label", "traefik.http.routers.app-web.rule=\"PathPrefix(\\`/\\`)\"", "--label", "traefik.http.routers.app-web.priority=\"2\"", "--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\"" ], @config.role(:web).label_args
end
test "custom labels" do
@deploy[:labels] = { "my.custom.label" => "50" }
assert_equal "50", @config.role(:web).labels["my.custom.label"]
end
test "custom labels via role specialization" do
@deploy_with_roles[:labels] = { "my.custom.label" => "50" }
@deploy_with_roles[:servers]["workers"]["labels"] = { "my.custom.label" => "70" }
config_with_roles = Kamal::Configuration.new(@deploy_with_roles)
assert_equal "70", config_with_roles.role(:workers).labels["my.custom.label"]
end
test "overwriting default traefik label" do
@deploy[:labels] = { "traefik.http.routers.app-web.rule" => "\"Host(\\`example.com\\`) || (Host(\\`example.org\\`) && Path(\\`/traefik\\`))\"" }
assert_equal "\"Host(\\`example.com\\`) || (Host(\\`example.org\\`) && Path(\\`/traefik\\`))\"", @config.role(:web).labels["traefik.http.routers.app-web.rule"]
end
test "default traefik label on non-web role" do
config = Kamal::Configuration.new(@deploy_with_roles.tap { |c|
c[:servers]["beta"] = { "traefik" => "true", "hosts" => [ "1.1.1.5" ] }
})
assert_equal [ "--label", "service=\"app\"", "--label", "role=\"beta\"", "--label", "destination", "--label", "traefik.http.services.app-beta.loadbalancer.server.scheme=\"http\"", "--label", "traefik.http.routers.app-beta.rule=\"PathPrefix(\\`/\\`)\"", "--label", "traefik.http.routers.app-beta.priority=\"2\"", "--label", "traefik.http.middlewares.app-beta-retry.retry.attempts=\"5\"", "--label", "traefik.http.middlewares.app-beta-retry.retry.initialinterval=\"500ms\"", "--label", "traefik.http.routers.app-beta.middlewares=\"app-beta-retry@docker\"" ], config.role(:beta).label_args
end
test "env overwritten by role" do
assert_equal "redis://a/b", @config_with_roles.role(:workers).env.clear["REDIS_URL"]
assert_equal "\n", @config_with_roles.role(:workers).env.secrets_io.string
assert_equal [ "--env-file", ".kamal/env/roles/app-workers.env", "--env", "REDIS_URL=\"redis://a/b\"", "--env", "WEB_CONCURRENCY=\"4\"" ], @config_with_roles.role(:workers).env_args
end
test "container name" do
ENV["VERSION"] = "12345"
assert_equal "app-workers-12345", @config_with_roles.role(:workers).container_name
assert_equal "app-web-12345", @config_with_roles.role(:web).container_name
ensure
ENV.delete("VERSION")
end
test "env args" do
assert_equal [ "--env-file", ".kamal/env/roles/app-workers.env", "--env", "REDIS_URL=\"redis://a/b\"", "--env", "WEB_CONCURRENCY=\"4\"" ], @config_with_roles.role(:workers).env_args
end
test "env secret overwritten by role" do
@deploy_with_roles[:env] = {
"clear" => {
"REDIS_URL" => "redis://a/b"
},
"secret" => [
"REDIS_PASSWORD"
]
}
@deploy_with_roles[:servers]["workers"]["env"] = {
"clear" => {
"REDIS_URL" => "redis://a/b",
"WEB_CONCURRENCY" => 4
},
"secret" => [
"DB_PASSWORD"
]
}
config_with_roles = Kamal::Configuration.new(@deploy_with_roles)
ENV["REDIS_PASSWORD"] = "secret456"
ENV["DB_PASSWORD"] = "secret&\"123"
expected_secrets_file = <<~ENV
REDIS_PASSWORD=secret456
DB_PASSWORD=secret&\"123
ENV
assert_equal expected_secrets_file, config_with_roles.role(:workers).env.secrets_io.string
assert_equal [ "--env-file", ".kamal/env/roles/app-workers.env", "--env", "REDIS_URL=\"redis://a/b\"", "--env", "WEB_CONCURRENCY=\"4\"" ], config_with_roles.role(:workers).env_args
ensure
ENV["REDIS_PASSWORD"] = nil
ENV["DB_PASSWORD"] = nil
end
test "env secrets only in role" do
@deploy_with_roles[:servers]["workers"]["env"] = {
"clear" => {
"REDIS_URL" => "redis://a/b",
"WEB_CONCURRENCY" => 4
},
"secret" => [
"DB_PASSWORD"
]
}
config_with_roles = Kamal::Configuration.new(@deploy_with_roles)
ENV["DB_PASSWORD"] = "secret123"
expected_secrets_file = <<~ENV
DB_PASSWORD=secret123
ENV
assert_equal expected_secrets_file, config_with_roles.role(:workers).env.secrets_io.string
assert_equal [ "--env-file", ".kamal/env/roles/app-workers.env", "--env", "REDIS_URL=\"redis://a/b\"", "--env", "WEB_CONCURRENCY=\"4\"" ], config_with_roles.role(:workers).env_args
ensure
ENV["DB_PASSWORD"] = nil
end
test "env secrets only at top level" do
@deploy_with_roles[:env] = {
"clear" => {
"REDIS_URL" => "redis://a/b"
},
"secret" => [
"REDIS_PASSWORD"
]
}
ENV["REDIS_PASSWORD"] = "secret456"
expected_secrets_file = <<~ENV
REDIS_PASSWORD=secret456
ENV
assert_equal expected_secrets_file, @config_with_roles.role(:workers).env.secrets_io.string
assert_equal [ "--env-file", ".kamal/env/roles/app-workers.env", "--env", "REDIS_URL=\"redis://a/b\"", "--env", "WEB_CONCURRENCY=\"4\"" ], @config_with_roles.role(:workers).env_args
ensure
ENV["REDIS_PASSWORD"] = nil
end
test "env overwritten by role with secrets" do
@deploy_with_roles[:env] = {
"clear" => {
"REDIS_URL" => "redis://a/b"
},
"secret" => [
"REDIS_PASSWORD"
]
}
@deploy_with_roles[:servers]["workers"]["env"] = {
"clear" => {
"REDIS_URL" => "redis://c/d"
}
}
config_with_roles = Kamal::Configuration.new(@deploy_with_roles)
ENV["REDIS_PASSWORD"] = "secret456"
expected_secrets_file = <<~ENV
REDIS_PASSWORD=secret456
ENV
assert_equal expected_secrets_file, config_with_roles.role(:workers).env.secrets_io.string
assert_equal [ "--env-file", ".kamal/env/roles/app-workers.env", "--env", "REDIS_URL=\"redis://c/d\"" ], config_with_roles.role(:workers).env_args
ensure
ENV["REDIS_PASSWORD"] = nil
end
test "env secrets_file" do
assert_equal ".kamal/env/roles/app-workers.env", @config_with_roles.role(:workers).env.secrets_file
end
test "uses cord" do
assert @config_with_roles.role(:web).uses_cord?
assert_not @config_with_roles.role(:workers).uses_cord?
end
test "cord host file" do
assert_match %r{.kamal/cords/app-web-[0-9a-f]{32}/cord}, @config_with_roles.role(:web).cord_host_file
end
test "cord volume" do
assert_equal "/tmp/kamal-cord", @config_with_roles.role(:web).cord_volume.container_path
assert_match %r{.kamal/cords/app-web-[0-9a-f]{32}}, @config_with_roles.role(:web).cord_volume.host_path
assert_equal "--volume", @config_with_roles.role(:web).cord_volume.docker_args[0]
assert_match %r{\$\(pwd\)/.kamal/cords/app-web-[0-9a-f]{32}:/tmp/kamal-cord}, @config_with_roles.role(:web).cord_volume.docker_args[1]
end
test "cord container file" do
assert_equal "/tmp/kamal-cord/cord", @config_with_roles.role(:web).cord_container_file
end
test "asset path and volume args" do
ENV["VERSION"] = "12345"
assert_nil @config_with_roles.role(:web).asset_volume_args
assert_nil @config_with_roles.role(:workers).asset_volume_args
assert_nil @config_with_roles.role(:web).asset_path
assert_nil @config_with_roles.role(:workers).asset_path
assert_not @config_with_roles.role(:web).assets?
assert_not @config_with_roles.role(:workers).assets?
config_with_assets = Kamal::Configuration.new(@deploy_with_roles.dup.tap { |c|
c[:asset_path] = "foo"
})
assert_equal "foo", config_with_assets.role(:web).asset_path
assert_equal "foo", config_with_assets.role(:workers).asset_path
assert_equal [ "--volume", "$(pwd)/.kamal/assets/volumes/app-web-12345:foo" ], config_with_assets.role(:web).asset_volume_args
assert_nil config_with_assets.role(:workers).asset_volume_args
assert config_with_assets.role(:web).assets?
assert_not config_with_assets.role(:workers).assets?
config_with_assets = Kamal::Configuration.new(@deploy_with_roles.dup.tap { |c|
c[:servers]["web"] = { "hosts" => [ "1.1.1.1", "1.1.1.2" ], "asset_path" => "bar" }
})
assert_equal "bar", config_with_assets.role(:web).asset_path
assert_nil config_with_assets.role(:workers).asset_path
assert_equal [ "--volume", "$(pwd)/.kamal/assets/volumes/app-web-12345:bar" ], config_with_assets.role(:web).asset_volume_args
assert_nil config_with_assets.role(:workers).asset_volume_args
assert config_with_assets.role(:web).assets?
assert_not config_with_assets.role(:workers).assets?
ensure
ENV.delete("VERSION")
end
test "asset extracted path" do
ENV["VERSION"] = "12345"
assert_equal ".kamal/assets/extracted/app-web-12345", @config_with_roles.role(:web).asset_extracted_path
assert_equal ".kamal/assets/extracted/app-workers-12345", @config_with_roles.role(:workers).asset_extracted_path
ensure
ENV.delete("VERSION")
end
test "asset volume path" do
ENV["VERSION"] = "12345"
assert_equal ".kamal/assets/volumes/app-web-12345", @config_with_roles.role(:web).asset_volume_path
assert_equal ".kamal/assets/volumes/app-workers-12345", @config_with_roles.role(:workers).asset_volume_path
ensure
ENV.delete("VERSION")
end
end
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