package meter import ( "context" "github.com/unistack-org/micro/v3/logger" ) // Option powers the configuration for metrics implementations: type Option func(*Options) // Options for metrics implementations: type Options struct { Name string Address string Path string Labels Labels //TimingObjectives map[float64]float64 Logger logger.Logger Context context.Context MetricPrefix string LabelPrefix string WriteProcessMetrics bool WriteFDMetrics bool } // NewOptions prepares a set of options: func NewOptions(opt ...Option) Options { opts := Options{ Address: DefaultAddress, Path: DefaultPath, Context: context.Background(), Logger: logger.DefaultLogger, MetricPrefix: DefaultMetricPrefix, LabelPrefix: DefaultLabelPrefix, } for _, o := range opt { o(&opts) } return opts } // Context sets the metrics context func Context(ctx context.Context) Option { return func(o *Options) { o.Context = ctx } } // Path used to serve metrics over HTTP func Path(value string) Option { return func(o *Options) { o.Path = value } } // Address is the listen address to serve metrics func Address(value string) Option { return func(o *Options) { o.Address = value } } /* // TimingObjectives defines the desired spread of statistics for histogram / timing metrics: func TimingObjectives(value map[float64]float64) Option { return func(o *Options) { o.TimingObjectives = value } } */ // Logger sets the logger func Logger(l logger.Logger) Option { return func(o *Options) { o.Logger = l } } // Label sets the label func Label(key, val string) Option { return func(o *Options) { o.Labels.keys = append(o.Labels.keys, key) o.Labels.vals = append(o.Labels.vals, val) } } // Name sets the name func Name(n string) Option { return func(o *Options) { o.Name = n } } // WriteProcessMetrics enable process metrics output for write func WriteProcessMetrics(b bool) Option { return func(o *Options) { o.WriteProcessMetrics = b } } // WriteFDMetrics enable fd metrics output for write func WriteFDMetrics(b bool) Option { return func(o *Options) { o.WriteFDMetrics = b } }