client.go

Documentation: go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp

     1  // Copyright The OpenTelemetry Authors
     2  // SPDX-License-Identifier: Apache-2.0
     3  
     4  package otelhttp // import "go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp"
     5  
     6  import (
     7  	"context"
     8  	"io"
     9  	"net/http"
    10  	"net/url"
    11  	"strings"
    12  )
    13  
    14  // DefaultClient is the default Client and is used by Get, Head, Post and PostForm.
    15  // Please be careful of intitialization order - for example, if you change
    16  // the global propagator, the DefaultClient might still be using the old one.
    17  var DefaultClient = &http.Client{Transport: NewTransport(http.DefaultTransport)}
    18  
    19  // Get is a convenient replacement for http.Get that adds a span around the request.
    20  func Get(ctx context.Context, targetURL string) (resp *http.Response, err error) {
    21  	req, err := http.NewRequestWithContext(ctx, "GET", targetURL, nil)
    22  	if err != nil {
    23  		return nil, err
    24  	}
    25  	return DefaultClient.Do(req)
    26  }
    27  
    28  // Head is a convenient replacement for http.Head that adds a span around the request.
    29  func Head(ctx context.Context, targetURL string) (resp *http.Response, err error) {
    30  	req, err := http.NewRequestWithContext(ctx, "HEAD", targetURL, nil)
    31  	if err != nil {
    32  		return nil, err
    33  	}
    34  	return DefaultClient.Do(req)
    35  }
    36  
    37  // Post is a convenient replacement for http.Post that adds a span around the request.
    38  func Post(ctx context.Context, targetURL, contentType string, body io.Reader) (resp *http.Response, err error) {
    39  	req, err := http.NewRequestWithContext(ctx, "POST", targetURL, body)
    40  	if err != nil {
    41  		return nil, err
    42  	}
    43  	req.Header.Set("Content-Type", contentType)
    44  	return DefaultClient.Do(req)
    45  }
    46  
    47  // PostForm is a convenient replacement for http.PostForm that adds a span around the request.
    48  func PostForm(ctx context.Context, targetURL string, data url.Values) (resp *http.Response, err error) {
    49  	return Post(ctx, targetURL, "application/x-www-form-urlencoded", strings.NewReader(data.Encode()))
    50  }
    51
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