Files
kamal/test/configuration/role_test.rb
Donal McBreen 4f317b8499 Configuration validation
Validate the Kamal configuration giving useful warning on errors.
Each section of the configuration has its own config class and a YAML
file containing documented example configuration.

You can run `kamal docs` to see the example configuration, and
`kamal docs <section>` to see the example configuration for a specific
section.

The validation matches the configuration to the example configuration
checking that there are no unknown keys and that the values are of
matching types.

Where there is more complex validation - e.g for envs and servers, we
have custom validators that implement those rules.

Additonally the configuration examples are used to generate the
configuration documentation in the kamal-site repo.

You generate them by running:

```
bundle exec bin/docs <kamal-site-checkout>
```
2024-06-04 14:19:29 +01:00

274 lines
11 KiB
Ruby

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" }
assert_equal "70", Kamal::Configuration.new(@deploy_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("1.1.1.3").clear["REDIS_URL"]
assert_equal "\n", @config_with_roles.role(:workers).env("1.1.1.3").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("1.1.1.3")
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("1.1.1.3")
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"
]
}
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, Kamal::Configuration.new(@deploy_with_roles).role(:workers).env("1.1.1.3").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("1.1.1.3")
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"
]
}
ENV["DB_PASSWORD"] = "secret123"
expected_secrets_file = <<~ENV
DB_PASSWORD=secret123
ENV
assert_equal expected_secrets_file, Kamal::Configuration.new(@deploy_with_roles).role(:workers).env("1.1.1.3").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("1.1.1.3")
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, Kamal::Configuration.new(@deploy_with_roles).role(:workers).env("1.1.1.3").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("1.1.1.3")
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"
}
}
ENV["REDIS_PASSWORD"] = "secret456"
expected_secrets_file = <<~ENV
REDIS_PASSWORD=secret456
ENV
config = Kamal::Configuration.new(@deploy_with_roles)
assert_equal expected_secrets_file, config.role(:workers).env("1.1.1.3").secrets_io.string
assert_equal [ "--env-file", ".kamal/env/roles/app-workers.env", "--env", "REDIS_URL=\"redis://c/d\"" ], config.role(:workers).env_args("1.1.1.3")
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("1.1.1.3").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