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util.go
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util.go
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// Copyright 2016 PingCAP, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// See the License for the specific language governing permissions and
// limitations under the License.
package api
import (
"bytes"
"encoding/json"
"io"
"io/ioutil"
"net/http"
"github.com/juju/errors"
"github.com/pingcap/pd/server"
)
func readJSON(r io.ReadCloser, data interface{}) error {
defer r.Close()
b, err := ioutil.ReadAll(r)
if err != nil {
return errors.Trace(err)
}
err = json.Unmarshal(b, data)
if err != nil {
return errors.Trace(err)
}
return nil
}
func postJSON(url string, data []byte) error {
resp, err := server.DialClient.Post(url, "application/json", bytes.NewBuffer(data))
if err != nil {
return errors.Trace(err)
}
res, err := ioutil.ReadAll(resp.Body)
resp.Body.Close()
if err != nil {
return err
}
if resp.StatusCode != http.StatusOK {
return errors.New(string(res))
}
return nil
}
func doDelete(url string) error {
req, err := http.NewRequest("DELETE", url, nil)
if err != nil {
return err
}
res, err := server.DialClient.Do(req)
if err != nil {
return err
}
res.Body.Close()
return nil
}
func doGet(url string) (*http.Response, error) {
resp, err := server.DialClient.Get(url)
if err != nil {
return nil, errors.Trace(err)
}
if resp.StatusCode != http.StatusOK {
return nil, errors.Errorf("http get url %s return code %d", url, resp.StatusCode)
}
return resp, nil
}