mirror of
https://gitee.com/johng/gf.git
synced 2024-12-02 12:17:53 +08:00
105 lines
3.5 KiB
Go
105 lines
3.5 KiB
Go
// Copyright GoFrame Author(https://goframe.org). All Rights Reserved.
|
|
//
|
|
// This Source Code Form is subject to the terms of the MIT License.
|
|
// If a copy of the MIT was not distributed with this file,
|
|
// You can obtain one at https://github.com/gogf/gf.
|
|
|
|
package gclient
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
"io/ioutil"
|
|
"net/http"
|
|
"net/http/httptrace"
|
|
|
|
"go.opentelemetry.io/otel"
|
|
"go.opentelemetry.io/otel/attribute"
|
|
"go.opentelemetry.io/otel/codes"
|
|
"go.opentelemetry.io/otel/propagation"
|
|
"go.opentelemetry.io/otel/trace"
|
|
|
|
"github.com/gogf/gf/v2"
|
|
"github.com/gogf/gf/v2/internal/httputil"
|
|
"github.com/gogf/gf/v2/internal/utils"
|
|
"github.com/gogf/gf/v2/net/gtrace"
|
|
"github.com/gogf/gf/v2/os/gctx"
|
|
"github.com/gogf/gf/v2/text/gstr"
|
|
"github.com/gogf/gf/v2/util/gconv"
|
|
)
|
|
|
|
const (
|
|
tracingInstrumentName = "github.com/gogf/gf/v2/net/gclient.Client"
|
|
tracingAttrHttpAddressRemote = "http.address.remote"
|
|
tracingAttrHttpAddressLocal = "http.address.local"
|
|
tracingAttrHttpDnsStart = "http.dns.start"
|
|
tracingAttrHttpDnsDone = "http.dns.done"
|
|
tracingAttrHttpConnectStart = "http.connect.start"
|
|
tracingAttrHttpConnectDone = "http.connect.done"
|
|
tracingEventHttpRequest = "http.request"
|
|
tracingEventHttpRequestHeaders = "http.request.headers"
|
|
tracingEventHttpRequestBaggage = "http.request.baggage"
|
|
tracingEventHttpRequestBody = "http.request.body"
|
|
tracingEventHttpResponse = "http.response"
|
|
tracingEventHttpResponseHeaders = "http.response.headers"
|
|
tracingEventHttpResponseBody = "http.response.body"
|
|
tracingMiddlewareHandled gctx.StrKey = `MiddlewareClientTracingHandled`
|
|
)
|
|
|
|
// internalMiddlewareTracing is a client middleware that enables tracing feature using standards of OpenTelemetry.
|
|
func internalMiddlewareTracing(c *Client, r *http.Request) (response *Response, err error) {
|
|
var ctx = r.Context()
|
|
// Mark this request is handled by server tracing middleware,
|
|
// to avoid repeated handling by the same middleware.
|
|
if ctx.Value(tracingMiddlewareHandled) != nil {
|
|
return c.Next(r)
|
|
}
|
|
|
|
ctx = context.WithValue(ctx, tracingMiddlewareHandled, 1)
|
|
tr := otel.GetTracerProvider().Tracer(
|
|
tracingInstrumentName,
|
|
trace.WithInstrumentationVersion(gf.VERSION),
|
|
)
|
|
ctx, span := tr.Start(ctx, r.URL.String(), trace.WithSpanKind(trace.SpanKindClient))
|
|
defer span.End()
|
|
|
|
span.SetAttributes(gtrace.CommonLabels()...)
|
|
|
|
// Inject tracing content into http header.
|
|
otel.GetTextMapPropagator().Inject(ctx, propagation.HeaderCarrier(r.Header))
|
|
|
|
// If it is now using default trace provider, it then does no complex tracing jobs.
|
|
if gtrace.IsUsingDefaultProvider() {
|
|
response, err = c.Next(r)
|
|
return
|
|
}
|
|
|
|
// Continue client handler executing.
|
|
response, err = c.Next(
|
|
r.WithContext(
|
|
httptrace.WithClientTrace(
|
|
ctx, newClientTrace(ctx, span, r),
|
|
),
|
|
),
|
|
)
|
|
if err != nil {
|
|
span.SetStatus(codes.Error, fmt.Sprintf(`%+v`, err))
|
|
}
|
|
if response == nil || response.Response == nil {
|
|
return
|
|
}
|
|
|
|
reqBodyContentBytes, _ := ioutil.ReadAll(response.Body)
|
|
response.Body = utils.NewReadCloser(reqBodyContentBytes, false)
|
|
|
|
span.AddEvent(tracingEventHttpResponse, trace.WithAttributes(
|
|
attribute.String(tracingEventHttpResponseHeaders, gconv.String(httputil.HeaderToMap(response.Header))),
|
|
attribute.String(tracingEventHttpResponseBody, gstr.StrLimit(
|
|
string(reqBodyContentBytes),
|
|
gtrace.MaxContentLogSize(),
|
|
"...",
|
|
)),
|
|
))
|
|
return
|
|
}
|