331 lines
10 KiB
Go
331 lines
10 KiB
Go
package wrapper // import "go.unistack.org/micro/v3/meter/wrapper"
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import (
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"context"
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"fmt"
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"time"
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"go.unistack.org/micro/v3/client"
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"go.unistack.org/micro/v3/meter"
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"go.unistack.org/micro/v3/server"
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)
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var (
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// ClientRequestDurationSeconds specifies meter metric name
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ClientRequestDurationSeconds = "client_request_duration_seconds"
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// ClientRequestLatencyMicroseconds specifies meter metric name
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ClientRequestLatencyMicroseconds = "client_request_latency_microseconds"
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// ClientRequestTotal specifies meter metric name
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ClientRequestTotal = "client_request_total"
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// ClientRequestInflight specifies meter metric name
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ClientRequestInflight = "client_request_inflight"
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// ServerRequestDurationSeconds specifies meter metric name
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ServerRequestDurationSeconds = "server_request_duration_seconds"
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// ServerRequestLatencyMicroseconds specifies meter metric name
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ServerRequestLatencyMicroseconds = "server_request_latency_microseconds"
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// ServerRequestTotal specifies meter metric name
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ServerRequestTotal = "server_request_total"
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// ServerRequestInflight specifies meter metric name
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ServerRequestInflight = "server_request_inflight"
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// PublishMessageDurationSeconds specifies meter metric name
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PublishMessageDurationSeconds = "publish_message_duration_seconds"
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// PublishMessageLatencyMicroseconds specifies meter metric name
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PublishMessageLatencyMicroseconds = "publish_message_latency_microseconds"
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// PublishMessageTotal specifies meter metric name
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PublishMessageTotal = "publish_message_total"
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// PublishMessageInflight specifies meter metric name
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PublishMessageInflight = "publish_message_inflight"
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// SubscribeMessageDurationSeconds specifies meter metric name
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SubscribeMessageDurationSeconds = "subscribe_message_duration_seconds"
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// SubscribeMessageLatencyMicroseconds specifies meter metric name
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SubscribeMessageLatencyMicroseconds = "subscribe_message_latency_microseconds"
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// SubscribeMessageTotal specifies meter metric name
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SubscribeMessageTotal = "subscribe_message_total"
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// SubscribeMessageInflight specifies meter metric name
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SubscribeMessageInflight = "subscribe_message_inflight"
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labelSuccess = "success"
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labelFailure = "failure"
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labelStatus = "status"
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labelEndpoint = "endpoint"
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// DefaultSkipEndpoints contains list of endpoints that not evaluted by wrapper
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DefaultSkipEndpoints = []string{"Meter.Metrics"}
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)
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// Options struct
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type Options struct {
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Meter meter.Meter
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lopts []meter.Option
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SkipEndpoints []string
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}
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// Option func signature
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type Option func(*Options)
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// NewOptions creates new Options struct
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func NewOptions(opts ...Option) Options {
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options := Options{
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Meter: meter.DefaultMeter,
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lopts: make([]meter.Option, 0, 5),
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SkipEndpoints: DefaultSkipEndpoints,
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}
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for _, o := range opts {
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o(&options)
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}
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return options
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}
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// ServiceName passes service name to meter label
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func ServiceName(name string) Option {
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return func(o *Options) {
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o.lopts = append(o.lopts, meter.Labels("name", name))
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}
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}
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// ServiceVersion passes service version to meter label
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func ServiceVersion(version string) Option {
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return func(o *Options) {
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o.lopts = append(o.lopts, meter.Labels("version", version))
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}
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}
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// ServiceID passes service id to meter label
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func ServiceID(id string) Option {
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return func(o *Options) {
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o.lopts = append(o.lopts, meter.Labels("id", id))
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}
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}
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// Meter passes meter
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func Meter(m meter.Meter) Option {
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return func(o *Options) {
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o.Meter = m
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}
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}
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// SkipEndoints add endpoint to skip
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func SkipEndoints(eps ...string) Option {
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return func(o *Options) {
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o.SkipEndpoints = append(o.SkipEndpoints, eps...)
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}
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}
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type wrapper struct {
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client.Client
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callFunc client.CallFunc
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opts Options
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}
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// NewClientWrapper create new client wrapper
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func NewClientWrapper(opts ...Option) client.Wrapper {
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return func(c client.Client) client.Client {
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handler := &wrapper{
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opts: NewOptions(opts...),
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Client: c,
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}
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return handler
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}
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}
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// NewCallWrapper create new call wrapper
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func NewCallWrapper(opts ...Option) client.CallWrapper {
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return func(fn client.CallFunc) client.CallFunc {
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handler := &wrapper{
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opts: NewOptions(opts...),
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callFunc: fn,
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}
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return handler.CallFunc
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}
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}
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func (w *wrapper) CallFunc(ctx context.Context, addr string, req client.Request, rsp interface{}, opts client.CallOptions) error {
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endpoint := fmt.Sprintf("%s.%s", req.Service(), req.Endpoint())
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for _, ep := range w.opts.SkipEndpoints {
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if ep == endpoint {
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return w.callFunc(ctx, addr, req, rsp, opts)
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}
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}
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labels := make([]string, 0, 4)
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labels = append(labels, labelEndpoint, endpoint)
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w.opts.Meter.Counter(ClientRequestInflight, labels...).Inc()
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ts := time.Now()
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err := w.callFunc(ctx, addr, req, rsp, opts)
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te := time.Since(ts)
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w.opts.Meter.Counter(ClientRequestInflight, labels...).Dec()
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w.opts.Meter.Summary(ClientRequestLatencyMicroseconds, labels...).Update(te.Seconds())
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w.opts.Meter.Histogram(ClientRequestDurationSeconds, labels...).Update(te.Seconds())
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if err == nil {
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labels = append(labels, labelStatus, labelSuccess)
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} else {
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labels = append(labels, labelStatus, labelFailure)
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}
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w.opts.Meter.Counter(ClientRequestTotal, labels...).Inc()
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return err
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}
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func (w *wrapper) Call(ctx context.Context, req client.Request, rsp interface{}, opts ...client.CallOption) error {
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endpoint := fmt.Sprintf("%s.%s", req.Service(), req.Endpoint())
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for _, ep := range w.opts.SkipEndpoints {
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if ep == endpoint {
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return w.Client.Call(ctx, req, rsp, opts...)
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}
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}
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labels := make([]string, 0, 4)
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labels = append(labels, labelEndpoint, endpoint)
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w.opts.Meter.Counter(ClientRequestInflight, labels...).Inc()
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ts := time.Now()
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err := w.Client.Call(ctx, req, rsp, opts...)
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te := time.Since(ts)
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w.opts.Meter.Counter(ClientRequestInflight, labels...).Dec()
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w.opts.Meter.Summary(ClientRequestLatencyMicroseconds, labels...).Update(te.Seconds())
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w.opts.Meter.Histogram(ClientRequestDurationSeconds, labels...).Update(te.Seconds())
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if err == nil {
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labels = append(labels, labelStatus, labelSuccess)
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} else {
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labels = append(labels, labelStatus, labelFailure)
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}
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w.opts.Meter.Counter(ClientRequestTotal, labels...).Inc()
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return err
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}
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func (w *wrapper) Stream(ctx context.Context, req client.Request, opts ...client.CallOption) (client.Stream, error) {
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endpoint := fmt.Sprintf("%s.%s", req.Service(), req.Endpoint())
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for _, ep := range w.opts.SkipEndpoints {
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if ep == endpoint {
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return w.Client.Stream(ctx, req, opts...)
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}
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}
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labels := make([]string, 0, 4)
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labels = append(labels, labelEndpoint, endpoint)
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w.opts.Meter.Counter(ClientRequestInflight, labels...).Inc()
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ts := time.Now()
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stream, err := w.Client.Stream(ctx, req, opts...)
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te := time.Since(ts)
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w.opts.Meter.Counter(ClientRequestInflight, labels...).Dec()
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w.opts.Meter.Summary(ClientRequestLatencyMicroseconds, labels...).Update(te.Seconds())
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w.opts.Meter.Histogram(ClientRequestDurationSeconds, labels...).Update(te.Seconds())
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if err == nil {
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labels = append(labels, labelStatus, labelSuccess)
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} else {
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labels = append(labels, labelStatus, labelFailure)
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}
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w.opts.Meter.Counter(ClientRequestTotal, labels...).Inc()
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return stream, err
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}
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func (w *wrapper) Publish(ctx context.Context, p client.Message, opts ...client.PublishOption) error {
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endpoint := p.Topic()
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labels := make([]string, 0, 4)
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labels = append(labels, labelEndpoint, endpoint)
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w.opts.Meter.Counter(PublishMessageInflight, labels...).Inc()
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ts := time.Now()
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err := w.Client.Publish(ctx, p, opts...)
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te := time.Since(ts)
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w.opts.Meter.Counter(PublishMessageInflight, labels...).Dec()
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w.opts.Meter.Summary(PublishMessageLatencyMicroseconds, labels...).Update(te.Seconds())
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w.opts.Meter.Histogram(PublishMessageDurationSeconds, labels...).Update(te.Seconds())
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if err == nil {
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labels = append(labels, labelStatus, labelSuccess)
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} else {
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labels = append(labels, labelStatus, labelFailure)
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}
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w.opts.Meter.Counter(PublishMessageTotal, labels...).Inc()
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return err
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}
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// NewHandlerWrapper create new server handler wrapper
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func NewHandlerWrapper(opts ...Option) server.HandlerWrapper {
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handler := &wrapper{
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opts: NewOptions(opts...),
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}
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return handler.HandlerFunc
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}
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func (w *wrapper) HandlerFunc(fn server.HandlerFunc) server.HandlerFunc {
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return func(ctx context.Context, req server.Request, rsp interface{}) error {
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endpoint := req.Service() + "." + req.Endpoint()
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for _, ep := range w.opts.SkipEndpoints {
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if ep == endpoint {
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return fn(ctx, req, rsp)
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}
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}
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labels := make([]string, 0, 4)
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labels = append(labels, labelEndpoint, endpoint)
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w.opts.Meter.Counter(ServerRequestInflight, labels...).Inc()
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ts := time.Now()
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err := fn(ctx, req, rsp)
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te := time.Since(ts)
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w.opts.Meter.Counter(ServerRequestInflight, labels...).Dec()
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w.opts.Meter.Summary(ServerRequestLatencyMicroseconds, labels...).Update(te.Seconds())
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w.opts.Meter.Histogram(ServerRequestDurationSeconds, labels...).Update(te.Seconds())
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if err == nil {
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labels = append(labels, labelStatus, labelSuccess)
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} else {
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labels = append(labels, labelStatus, labelFailure)
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}
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w.opts.Meter.Counter(ServerRequestTotal, labels...).Inc()
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return err
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}
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}
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// NewSubscriberWrapper create server subscribe wrapper
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func NewSubscriberWrapper(opts ...Option) server.SubscriberWrapper {
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handler := &wrapper{
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opts: NewOptions(opts...),
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}
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return handler.SubscriberFunc
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}
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func (w *wrapper) SubscriberFunc(fn server.SubscriberFunc) server.SubscriberFunc {
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return func(ctx context.Context, msg server.Message) error {
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endpoint := msg.Topic()
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labels := make([]string, 0, 4)
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labels = append(labels, labelEndpoint, endpoint)
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w.opts.Meter.Counter(SubscribeMessageInflight, labels...).Inc()
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ts := time.Now()
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err := fn(ctx, msg)
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te := time.Since(ts)
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w.opts.Meter.Counter(SubscribeMessageInflight, labels...).Dec()
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w.opts.Meter.Summary(SubscribeMessageLatencyMicroseconds, labels...).Update(te.Seconds())
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w.opts.Meter.Histogram(SubscribeMessageDurationSeconds, labels...).Update(te.Seconds())
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if err == nil {
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labels = append(labels, labelStatus, labelSuccess)
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} else {
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labels = append(labels, labelStatus, labelFailure)
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}
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w.opts.Meter.Counter(SubscribeMessageTotal, labels...).Inc()
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return err
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}
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}
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