server

type BackendStorageTransformFn func(
	storage.Storage,
	m3.Options,
	instrument.Options,
) (storage.Storage, error)

type CustomHandlerOptionsFn func(instrument.Options) (options.CustomHandlerOptions, error)

type CustomTSDBOptionsFn func(m3.Options, instrument.Options) (m3.Options, error)

type InstrumentOptionsReady struct {
	InstrumentOptions instrument.Options
	MetricsReporters  instrument.MetricsConfigurationReporters
}

type RunOptions struct {
	// Config is an alternate way to provide configuration and will be used
	// instead of parsing ConfigFile if ConfigFile is not specified.
	Config config.Configuration

	// DBConfig is the local M3DB config when running embedded.
	DBConfig *dbconfig.DBConfiguration

	// DBClient is the local M3DB client when running embedded.
	DBClient <-chan client.Client

	// ClusterClient is the local M3DB cluster client when running embedded.
	ClusterClient <-chan clusterclient.Client

	// InterruptCh is a programmatic interrupt channel to supply to
	// interrupt and shutdown the server.
	InterruptCh <-chan error

	// ShutdownCh is an optional channel to supply if interested in receiving
	// a notification that the server has shutdown.
	ShutdownCh chan<- struct{}

	// ListenerCh is a programmatic channel to receive the server listener
	// on once it has opened.
	ListenerCh chan<- net.Listener

	// M3MsgListenerCh is a programmatic channel to receive the M3Msg server
	// listener on once it has opened.
	M3MsgListenerCh chan<- net.Listener

	// DownsamplerReadyCh is a programmatic channel to receive the downsampler
	// ready signal once it is open.
	DownsamplerReadyCh chan<- struct{}

	// InstrumentOptionsReadyCh is a programmatic channel to receive a set of
	// instrument options and metric reporters that is delivered when
	// constructed.
	InstrumentOptionsReadyCh chan<- InstrumentOptionsReady

	// ClockOptions is an optional clock to use instead of the default one.
	ClockOptions clock.Options

	// CustomHandlerOptions creates custom handler options.
	CustomHandlerOptions CustomHandlerOptionsFn

	// CustomPromQLParseFunction is a custom PromQL parsing function.
	CustomPromQLParseFunction promql.ParseFn

	// ApplyCustomTSDBOptions is a transform that allows for custom tsdb options.
	ApplyCustomTSDBOptions CustomTSDBOptionsFn

	// BackendStorageTransform is a custom backend storage transform.
	BackendStorageTransform BackendStorageTransformFn

	// AggregatorServerOptions are server options for aggregator.
	AggregatorServerOptions []server.AdminOption

	// CustomBuildTags are additional tags to be added to the instrument build
	// reporter.
	CustomBuildTags map[string]string

	// ApplyCustomRuleStore provides an option to swap the backend used for the rule stores.
	ApplyCustomRuleStore downsample.CustomRuleStoreFn
}

type RunResult struct {
	MultiProcessRun               bool
	MultiProcessIsParentCleanExit bool
}