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73 lines
1.8 KiB
73 lines
1.8 KiB
// Copyright (c) 2019 The Jaeger Authors.
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// Copyright (c) 2017 Uber Technologies, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package tracing
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import (
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"context"
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"encoding/json"
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"errors"
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"io"
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"net/http"
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"go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp"
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"go.opentelemetry.io/otel/trace"
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)
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// HTTPClient wraps an http.Client with tracing instrumentation.
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type HTTPClient struct {
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TracerProvider trace.TracerProvider
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Client *http.Client
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}
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func NewHTTPClient(tp trace.TracerProvider) *HTTPClient {
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return &HTTPClient{
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TracerProvider: tp,
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Client: &http.Client{
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Transport: otelhttp.NewTransport(
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http.DefaultTransport,
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otelhttp.WithTracerProvider(tp),
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),
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},
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}
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}
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// GetJSON executes HTTP GET against specified url and tried to parse
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// the response into out object.
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func (c *HTTPClient) GetJSON(ctx context.Context, endpoint string, url string, out interface{}) error {
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req, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil)
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if err != nil {
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return err
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}
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res, err := c.Client.Do(req)
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if err != nil {
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return err
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}
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defer res.Body.Close()
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if res.StatusCode >= 400 {
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body, err := io.ReadAll(res.Body)
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if err != nil {
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return err
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}
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return errors.New(string(body))
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}
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decoder := json.NewDecoder(res.Body)
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return decoder.Decode(out)
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}
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