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add metrics and tracing

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Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>
This commit is contained in:
Василий Толстов 2024-04-23 06:51:47 +03:00
parent a648bf77f4
commit b87423895c
3 changed files with 165 additions and 90 deletions
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9
go.mod
View File

@ -2,4 +2,11 @@ module go.unistack.org/micro-client-http/v3
go 1.18 go 1.18
require go.unistack.org/micro/v3 v3.10.28 require go.unistack.org/micro/v3 v3.10.64
require (
golang.org/x/sys v0.19.0 // indirect
google.golang.org/genproto/googleapis/rpc v0.0.0-20240415180920-8c6c420018be // indirect
google.golang.org/grpc v1.63.2 // indirect
google.golang.org/protobuf v1.33.0 // indirect
)

15
go.sum
View File

@ -1,2 +1,13 @@
go.unistack.org/micro/v3 v3.10.28 h1:/87lGekrmi0/66pioy+Nh8lVUBBYnVqKoHiNYX5OmMI= github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
go.unistack.org/micro/v3 v3.10.28/go.mod h1:eUgtvbtiiz6te93m0ZdmoecbitWwjdBmmr84srmEIKA= go.unistack.org/micro/v3 v3.10.64 h1:hTRW/4krLjdGb1gDwN8UDub0RmUqrn/oYclL4RXZTOw=
go.unistack.org/micro/v3 v3.10.64/go.mod h1:erMgt3Bl7vQQ0e9UpQyR5NlLiZ9pKeEJ9+1tfYFaqUg=
golang.org/x/net v0.21.0 h1:AQyQV4dYCvJ7vGmJyKki9+PBdyvhkSd8EIx/qb0AYv4=
golang.org/x/sys v0.19.0 h1:q5f1RH2jigJ1MoAWp2KTp3gm5zAGFUTarQZ5U386+4o=
golang.org/x/sys v0.19.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
golang.org/x/text v0.14.0 h1:ScX5w1eTa3QqT8oi6+ziP7dTV1S2+ALU0bI+0zXKWiQ=
google.golang.org/genproto/googleapis/rpc v0.0.0-20240415180920-8c6c420018be h1:LG9vZxsWGOmUKieR8wPAUR3u3MpnYFQZROPIMaXh7/A=
google.golang.org/genproto/googleapis/rpc v0.0.0-20240415180920-8c6c420018be/go.mod h1:WtryC6hu0hhx87FDGxWCDptyssuo68sk10vYjF+T9fY=
google.golang.org/grpc v1.63.2 h1:MUeiw1B2maTVZthpU5xvASfTh3LDbxHd6IJ6QQVU+xM=
google.golang.org/grpc v1.63.2/go.mod h1:WAX/8DgncnokcFUldAxq7GeB5DXHDbMF+lLvDomNkRA=
google.golang.org/protobuf v1.33.0 h1:uNO2rsAINq/JlFpSdYEKIZ0uKD/R9cpdv0T+yoGwGmI=
google.golang.org/protobuf v1.33.0/go.mod h1:c6P6GXX6sHbq/GpV6MGZEdwhWPcYBgnhAHhKbcUYpos=

225
http.go
View File

@ -11,6 +11,7 @@ import (
"net/http" "net/http"
"net/url" "net/url"
"os" "os"
"strconv"
"strings" "strings"
"sync" "sync"
"time" "time"
@ -21,7 +22,10 @@ import (
"go.unistack.org/micro/v3/errors" "go.unistack.org/micro/v3/errors"
"go.unistack.org/micro/v3/logger" "go.unistack.org/micro/v3/logger"
"go.unistack.org/micro/v3/metadata" "go.unistack.org/micro/v3/metadata"
"go.unistack.org/micro/v3/options"
"go.unistack.org/micro/v3/selector" "go.unistack.org/micro/v3/selector"
"go.unistack.org/micro/v3/semconv"
"go.unistack.org/micro/v3/tracer"
rutil "go.unistack.org/micro/v3/util/reflect" rutil "go.unistack.org/micro/v3/util/reflect"
) )
@ -35,6 +39,10 @@ func filterLabel(r []router.Route) []router.Route {
*/ */
type httpClient struct { type httpClient struct {
funcPublish client.FuncPublish
funcBatchPublish client.FuncBatchPublish
funcCall client.FuncCall
funcStream client.FuncStream
httpcli *http.Client httpcli *http.Client
opts client.Options opts client.Options
sync.RWMutex sync.RWMutex
@ -223,23 +231,23 @@ func newRequest(ctx context.Context, log logger.Logger, addr string, req client.
return hreq, nil return hreq, nil
} }
func (h *httpClient) call(ctx context.Context, addr string, req client.Request, rsp interface{}, opts client.CallOptions) error { func (c *httpClient) call(ctx context.Context, addr string, req client.Request, rsp interface{}, opts client.CallOptions) error {
ct := req.ContentType() ct := req.ContentType()
if len(opts.ContentType) > 0 { if len(opts.ContentType) > 0 {
ct = opts.ContentType ct = opts.ContentType
} }
cf, err := h.newCodec(ct) cf, err := c.newCodec(ct)
if err != nil { if err != nil {
return errors.BadRequest("go.micro.client", err.Error()) return errors.BadRequest("go.micro.client", err.Error())
} }
hreq, err := newRequest(ctx, h.opts.Logger, addr, req, ct, cf, req.Body(), opts) hreq, err := newRequest(ctx, c.opts.Logger, addr, req, ct, cf, req.Body(), opts)
if err != nil { if err != nil {
return err return err
} }
// make the request // make the request
hrsp, err := h.httpcli.Do(hreq) hrsp, err := c.httpcli.Do(hreq)
if err != nil { if err != nil {
switch err := err.(type) { switch err := err.(type) {
case *url.Error: case *url.Error:
@ -256,29 +264,29 @@ func (h *httpClient) call(ctx context.Context, addr string, req client.Request,
defer hrsp.Body.Close() defer hrsp.Body.Close()
return h.parseRsp(ctx, hrsp, rsp, opts) return c.parseRsp(ctx, hrsp, rsp, opts)
} }
func (h *httpClient) stream(ctx context.Context, addr string, req client.Request, opts client.CallOptions) (client.Stream, error) { func (c *httpClient) stream(ctx context.Context, addr string, req client.Request, opts client.CallOptions) (client.Stream, error) {
ct := req.ContentType() ct := req.ContentType()
if len(opts.ContentType) > 0 { if len(opts.ContentType) > 0 {
ct = opts.ContentType ct = opts.ContentType
} }
// get codec // get codec
cf, err := h.newCodec(ct) cf, err := c.newCodec(ct)
if err != nil { if err != nil {
return nil, errors.BadRequest("go.micro.client", err.Error()) return nil, errors.BadRequest("go.micro.client", err.Error())
} }
cc, err := (h.httpcli.Transport).(*http.Transport).DialContext(ctx, "tcp", addr) cc, err := (c.httpcli.Transport).(*http.Transport).DialContext(ctx, "tcp", addr)
if err != nil { if err != nil {
return nil, errors.InternalServerError("go.micro.client", fmt.Sprintf("Error dialing: %v", err)) return nil, errors.InternalServerError("go.micro.client", fmt.Sprintf("Error dialing: %v", err))
} }
return &httpStream{ return &httpStream{
address: addr, address: addr,
logger: h.opts.Logger, logger: c.opts.Logger,
context: ctx, context: ctx,
closed: make(chan bool), closed: make(chan bool),
opts: opts, opts: opts,
@ -290,66 +298,88 @@ func (h *httpClient) stream(ctx context.Context, addr string, req client.Request
}, nil }, nil
} }
func (h *httpClient) newCodec(ct string) (codec.Codec, error) { func (c *httpClient) newCodec(ct string) (codec.Codec, error) {
h.RLock() c.RLock()
defer h.RUnlock()
if idx := strings.IndexRune(ct, ';'); idx >= 0 { if idx := strings.IndexRune(ct, ';'); idx >= 0 {
ct = ct[:idx] ct = ct[:idx]
} }
if c, ok := h.opts.Codecs[ct]; ok { if cf, ok := c.opts.Codecs[ct]; ok {
return c, nil c.RUnlock()
return cf, nil
} }
c.RUnlock()
return nil, codec.ErrUnknownContentType return nil, codec.ErrUnknownContentType
} }
func (h *httpClient) Init(opts ...client.Option) error { func (c *httpClient) Init(opts ...client.Option) error {
if len(opts) == 0 && h.init {
return nil
}
for _, o := range opts { for _, o := range opts {
o(&h.opts) o(&c.opts)
} }
if err := h.opts.Broker.Init(); err != nil { c.funcCall = c.fnCall
return err c.funcStream = c.fnStream
} c.funcPublish = c.fnPublish
if err := h.opts.Tracer.Init(); err != nil { c.funcBatchPublish = c.fnBatchPublish
return err
} c.opts.Hooks.EachNext(func(hook options.Hook) {
if err := h.opts.Router.Init(); err != nil { switch h := hook.(type) {
return err case client.HookCall:
} c.funcCall = h(c.funcCall)
if err := h.opts.Logger.Init(); err != nil { case client.HookStream:
return err c.funcStream = h(c.funcStream)
} case client.HookPublish:
if err := h.opts.Meter.Init(); err != nil { c.funcPublish = h(c.funcPublish)
return err case client.HookBatchPublish:
} c.funcBatchPublish = h(c.funcBatchPublish)
if err := h.opts.Transport.Init(); err != nil {
return err
} }
})
return nil return nil
} }
func (h *httpClient) Options() client.Options { func (c *httpClient) Options() client.Options {
return h.opts return c.opts
} }
func (h *httpClient) NewMessage(topic string, msg interface{}, opts ...client.MessageOption) client.Message { func (c *httpClient) NewMessage(topic string, msg interface{}, opts ...client.MessageOption) client.Message {
return newHTTPMessage(topic, msg, h.opts.ContentType, opts...) return newHTTPMessage(topic, msg, c.opts.ContentType, opts...)
} }
func (h *httpClient) NewRequest(service, method string, req interface{}, opts ...client.RequestOption) client.Request { func (c *httpClient) NewRequest(service, method string, req interface{}, opts ...client.RequestOption) client.Request {
return newHTTPRequest(service, method, req, h.opts.ContentType, opts...) return newHTTPRequest(service, method, req, c.opts.ContentType, opts...)
} }
func (h *httpClient) Call(ctx context.Context, req client.Request, rsp interface{}, opts ...client.CallOption) error { func (c *httpClient) Call(ctx context.Context, req client.Request, rsp interface{}, opts ...client.CallOption) error {
ts := time.Now()
c.opts.Meter.Counter(semconv.ClientRequestInflight, "endpoint", req.Endpoint()).Inc()
var sp tracer.Span
ctx, sp = c.opts.Tracer.Start(ctx, req.Endpoint()+" rpc-client",
tracer.WithSpanKind(tracer.SpanKindClient),
tracer.WithSpanLabels("endpoint", req.Endpoint()),
)
err := c.funcCall(ctx, req, rsp, opts...)
c.opts.Meter.Counter(semconv.ClientRequestInflight, "endpoint", req.Endpoint()).Dec()
te := time.Since(ts)
c.opts.Meter.Summary(semconv.ClientRequestLatencyMicroseconds, "endpoint", req.Endpoint()).Update(te.Seconds())
c.opts.Meter.Histogram(semconv.ClientRequestDurationSeconds, "endpoint", req.Endpoint()).Update(te.Seconds())
if me := errors.FromError(err); me == nil {
sp.Finish()
c.opts.Meter.Counter(semconv.ClientRequestTotal, "endpoint", req.Endpoint(), "status", "success", "code", strconv.Itoa(int(200))).Inc()
} else {
sp.SetStatus(tracer.SpanStatusError, err.Error())
c.opts.Meter.Counter(semconv.ClientRequestTotal, "endpoint", req.Endpoint(), "status", "failure", "code", strconv.Itoa(int(me.Code))).Inc()
}
return err
}
func (c *httpClient) fnCall(ctx context.Context, req client.Request, rsp interface{}, opts ...client.CallOption) error {
// make a copy of call opts // make a copy of call opts
callOpts := h.opts.CallOptions callOpts := c.opts.CallOptions
for _, opt := range opts { for _, opt := range opts {
opt(&callOpts) opt(&callOpts)
} }
@ -376,26 +406,21 @@ func (h *httpClient) Call(ctx context.Context, req client.Request, rsp interface
} }
// make copy of call method // make copy of call method
hcall := h.call hcall := c.call
// wrap the call in reverse
for i := len(callOpts.CallWrappers); i > 0; i-- {
hcall = callOpts.CallWrappers[i-1](hcall)
}
// use the router passed as a call option, or fallback to the rpc clients router // use the router passed as a call option, or fallback to the rpc clients router
if callOpts.Router == nil { if callOpts.Router == nil {
callOpts.Router = h.opts.Router callOpts.Router = c.opts.Router
} }
if callOpts.Selector == nil { if callOpts.Selector == nil {
callOpts.Selector = h.opts.Selector callOpts.Selector = c.opts.Selector
} }
// inject proxy address // inject proxy address
// TODO: don't even bother using Lookup/Select in this case // TODO: don't even bother using Lookup/Select in this case
if len(h.opts.Proxy) > 0 { if len(c.opts.Proxy) > 0 {
callOpts.Address = []string{h.opts.Proxy} callOpts.Address = []string{c.opts.Proxy}
} }
var next selector.Next var next selector.Next
@ -417,7 +442,7 @@ func (h *httpClient) Call(ctx context.Context, req client.Request, rsp interface
var routes []string var routes []string
// lookup the route to send the reques to // lookup the route to send the reques to
// TODO apply any filtering here // TODO apply any filtering here
routes, err = h.opts.Lookup(ctx, req, callOpts) routes, err = c.opts.Lookup(ctx, req, callOpts)
if err != nil { if err != nil {
return errors.InternalServerError("go.micro.client", err.Error()) return errors.InternalServerError("go.micro.client", err.Error())
} }
@ -434,7 +459,7 @@ func (h *httpClient) Call(ctx context.Context, req client.Request, rsp interface
// make the call // make the call
err = hcall(ctx, node, req, rsp, callOpts) err = hcall(ctx, node, req, rsp, callOpts)
// record the result of the call to inform future routing decisions // record the result of the call to inform future routing decisions
if verr := h.opts.Selector.Record(node, err); verr != nil { if verr := c.opts.Selector.Record(node, err); verr != nil {
return verr return verr
} }
@ -479,11 +504,36 @@ func (h *httpClient) Call(ctx context.Context, req client.Request, rsp interface
return gerr return gerr
} }
func (h *httpClient) Stream(ctx context.Context, req client.Request, opts ...client.CallOption) (client.Stream, error) { func (c *httpClient) Stream(ctx context.Context, req client.Request, opts ...client.CallOption) (client.Stream, error) {
ts := time.Now()
c.opts.Meter.Counter(semconv.ClientRequestInflight, "endpoint", req.Endpoint()).Inc()
var sp tracer.Span
ctx, sp = c.opts.Tracer.Start(ctx, req.Endpoint()+" rpc-client",
tracer.WithSpanKind(tracer.SpanKindClient),
tracer.WithSpanLabels("endpoint", req.Endpoint()),
)
stream, err := c.funcStream(ctx, req, opts...)
c.opts.Meter.Counter(semconv.ClientRequestInflight, "endpoint", req.Endpoint()).Dec()
te := time.Since(ts)
c.opts.Meter.Summary(semconv.ClientRequestLatencyMicroseconds, "endpoint", req.Endpoint()).Update(te.Seconds())
c.opts.Meter.Histogram(semconv.ClientRequestDurationSeconds, "endpoint", req.Endpoint()).Update(te.Seconds())
if me := errors.FromError(err); me == nil {
sp.Finish()
c.opts.Meter.Counter(semconv.ClientRequestTotal, "endpoint", req.Endpoint(), "status", "success", "code", strconv.Itoa(int(200))).Inc()
} else {
sp.SetStatus(tracer.SpanStatusError, err.Error())
c.opts.Meter.Counter(semconv.ClientRequestTotal, "endpoint", req.Endpoint(), "status", "failure", "code", strconv.Itoa(int(me.Code))).Inc()
}
return stream, err
}
func (c *httpClient) fnStream(ctx context.Context, req client.Request, opts ...client.CallOption) (client.Stream, error) {
var err error var err error
// make a copy of call opts // make a copy of call opts
callOpts := h.opts.CallOptions callOpts := c.opts.CallOptions
for _, o := range opts { for _, o := range opts {
o(&callOpts) o(&callOpts)
} }
@ -520,17 +570,17 @@ func (h *httpClient) Stream(ctx context.Context, req client.Request, opts ...cli
// use the router passed as a call option, or fallback to the rpc clients router // use the router passed as a call option, or fallback to the rpc clients router
if callOpts.Router == nil { if callOpts.Router == nil {
callOpts.Router = h.opts.Router callOpts.Router = c.opts.Router
} }
if callOpts.Selector == nil { if callOpts.Selector == nil {
callOpts.Selector = h.opts.Selector callOpts.Selector = c.opts.Selector
} }
// inject proxy address // inject proxy address
// TODO: don't even bother using Lookup/Select in this case // TODO: don't even bother using Lookup/Select in this case
if len(h.opts.Proxy) > 0 { if len(c.opts.Proxy) > 0 {
callOpts.Address = []string{h.opts.Proxy} callOpts.Address = []string{c.opts.Proxy}
} }
var next selector.Next var next selector.Next
@ -551,7 +601,7 @@ func (h *httpClient) Stream(ctx context.Context, req client.Request, opts ...cli
var routes []string var routes []string
// lookup the route to send the reques to // lookup the route to send the reques to
// TODO apply any filtering here // TODO apply any filtering here
routes, err = h.opts.Lookup(ctx, req, callOpts) routes, err = c.opts.Lookup(ctx, req, callOpts)
if err != nil { if err != nil {
return nil, errors.InternalServerError("go.micro.client", err.Error()) return nil, errors.InternalServerError("go.micro.client", err.Error())
} }
@ -565,10 +615,10 @@ func (h *httpClient) Stream(ctx context.Context, req client.Request, opts ...cli
node := next() node := next()
stream, cerr := h.stream(ctx, node, req, callOpts) stream, cerr := c.stream(ctx, node, req, callOpts)
// record the result of the call to inform future routing decisions // record the result of the call to inform future routing decisions
if verr := h.opts.Selector.Record(node, cerr); verr != nil { if verr := c.opts.Selector.Record(node, cerr); verr != nil {
return nil, verr return nil, verr
} }
@ -619,15 +669,23 @@ func (h *httpClient) Stream(ctx context.Context, req client.Request, opts ...cli
return nil, grr return nil, grr
} }
func (h *httpClient) BatchPublish(ctx context.Context, p []client.Message, opts ...client.PublishOption) error { func (c *httpClient) BatchPublish(ctx context.Context, p []client.Message, opts ...client.PublishOption) error {
return h.publish(ctx, p, opts...) return c.funcBatchPublish(ctx, p, opts...)
} }
func (h *httpClient) Publish(ctx context.Context, p client.Message, opts ...client.PublishOption) error { func (c *httpClient) fnBatchPublish(ctx context.Context, p []client.Message, opts ...client.PublishOption) error {
return h.publish(ctx, []client.Message{p}, opts...) return c.publish(ctx, p, opts...)
} }
func (h *httpClient) publish(ctx context.Context, ps []client.Message, opts ...client.PublishOption) error { func (c *httpClient) Publish(ctx context.Context, p client.Message, opts ...client.PublishOption) error {
return c.funcPublish(ctx, p, opts...)
}
func (c *httpClient) fnPublish(ctx context.Context, p client.Message, opts ...client.PublishOption) error {
return c.publish(ctx, []client.Message{p}, opts...)
}
func (c *httpClient) publish(ctx context.Context, ps []client.Message, opts ...client.PublishOption) error {
var body []byte var body []byte
options := client.NewPublishOptions(opts...) options := client.NewPublishOptions(opts...)
@ -668,7 +726,7 @@ func (h *httpClient) publish(ctx context.Context, ps []client.Message, opts ...c
body = d.Data body = d.Data
} else { } else {
// use codec for payload // use codec for payload
cf, err := h.newCodec(p.ContentType()) cf, err := c.newCodec(p.ContentType())
if err != nil { if err != nil {
return errors.InternalServerError("go.micro.client", err.Error()) return errors.InternalServerError("go.micro.client", err.Error())
} }
@ -683,28 +741,28 @@ func (h *httpClient) publish(ctx context.Context, ps []client.Message, opts ...c
msgs = append(msgs, &broker.Message{Header: md, Body: body}) msgs = append(msgs, &broker.Message{Header: md, Body: body})
} }
return h.opts.Broker.BatchPublish(ctx, msgs, return c.opts.Broker.BatchPublish(ctx, msgs,
broker.PublishContext(ctx), broker.PublishContext(ctx),
broker.PublishBodyOnly(options.BodyOnly), broker.PublishBodyOnly(options.BodyOnly),
) )
} }
func (h *httpClient) String() string { func (c *httpClient) String() string {
return "http" return "http"
} }
func (h *httpClient) Name() string { func (c *httpClient) Name() string {
return h.opts.Name return c.opts.Name
} }
func NewClient(opts ...client.Option) client.Client { func NewClient(opts ...client.Option) *httpClient {
options := client.NewOptions(opts...) options := client.NewOptions(opts...)
if len(options.ContentType) == 0 { if len(options.ContentType) == 0 {
options.ContentType = DefaultContentType options.ContentType = DefaultContentType
} }
rc := &httpClient{ c := &httpClient{
opts: options, opts: options,
} }
@ -727,7 +785,7 @@ func NewClient(opts ...client.Option) client.Client {
} }
if httpcli, ok := options.Context.Value(httpClientKey{}).(*http.Client); ok { if httpcli, ok := options.Context.Value(httpClientKey{}).(*http.Client); ok {
rc.httpcli = httpcli c.httpcli = httpcli
} else { } else {
// TODO customTransport := http.DefaultTransport.(*http.Transport).Clone() // TODO customTransport := http.DefaultTransport.(*http.Transport).Clone()
tr := &http.Transport{ tr := &http.Transport{
@ -743,14 +801,13 @@ func NewClient(opts ...client.Option) client.Client {
ExpectContinueTimeout: 1 * time.Second, ExpectContinueTimeout: 1 * time.Second,
TLSClientConfig: options.TLSConfig, TLSClientConfig: options.TLSConfig,
} }
rc.httpcli = &http.Client{Transport: tr} c.httpcli = &http.Client{Transport: tr}
} }
c := client.Client(rc)
// wrap in reverse c.funcCall = c.fnCall
for i := len(options.Wrappers); i > 0; i-- { c.funcStream = c.fnStream
c = options.Wrappers[i-1](c) c.funcPublish = c.fnPublish
} c.funcBatchPublish = c.fnBatchPublish
return c return c
} }