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request.go
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request.go
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/**
Copyright 2012 Matthew Baird
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,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
**/
package api
import (
"bytes"
"encoding/json"
"fmt"
"io"
"io/ioutil"
"log"
"net/http"
"runtime"
"strings"
)
type Request http.Request
const (
Version = "0.0.1"
DefaultProtocol = "http"
DefaultDomain = "localhost"
DefaultPort = "9200"
)
var (
_ = log.Ldate
Protocol string = DefaultProtocol
Domain string = DefaultDomain
Port string = DefaultPort
)
func ElasticSearchRequest(method, path string) (*Request, error) {
req, err := http.NewRequest(method, fmt.Sprintf("%s://%s:%s%s", Protocol, Domain, Port, path), nil)
if err != nil {
return nil, err
}
req.Header.Add("Accept", "application/json")
req.Header.Add("User-Agent", "elasticSearch/"+Version+" ("+runtime.GOOS+"-"+runtime.GOARCH+")")
return (*Request)(req), nil
}
func (r *Request) SetBodyJson(data interface{}) error {
body, err := json.Marshal(data)
if err != nil {
return err
}
r.SetBody(bytes.NewReader(body))
r.Header.Set("Content-Type", "application/json")
return nil
}
func (r *Request) SetBodyString(body string) {
r.SetBody(strings.NewReader(body))
}
func (r *Request) SetBody(body io.Reader) {
rc, ok := body.(io.ReadCloser)
if !ok && body != nil {
rc = ioutil.NopCloser(body)
}
r.Body = rc
if body != nil {
switch v := body.(type) {
case *strings.Reader:
r.ContentLength = int64(v.Len())
case *bytes.Buffer:
r.ContentLength = int64(v.Len())
}
}
}
func (r *Request) Do(v interface{}) (int, []byte, error) {
res, err := http.DefaultClient.Do((*http.Request)(r))
if err != nil {
return 0, nil, err
}
defer res.Body.Close()
bodyBytes, err := ioutil.ReadAll(res.Body)
if res.StatusCode > 304 && v != nil {
jsonErr := json.Unmarshal(bodyBytes, v)
if jsonErr != nil {
return res.StatusCode, nil, err
}
}
return res.StatusCode, bodyBytes, nil
}