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http_client.go
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http_client.go
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package system
import (
"crypto/tls"
"encoding/json"
"fmt"
"io"
"net/http"
"net/url"
"path"
"code.cloudfoundry.org/lager"
)
type httpClient struct {
baseURL string
authorization string
client *http.Client
request *http.Request
logger lager.Logger
}
//newHttpClient ...
func newHttpClient(url, authorization string, logger lager.Logger) httpClient {
tr := &http.Transport{
TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
}
return httpClient{
baseURL: url,
authorization: authorization,
client: &http.Client{Transport: tr},
logger: logger.Session("http"),
}
}
func (client *httpClient) NewRequest(endpoint string, body io.Reader) (*http.Request, error) {
parsedURL, err := url.Parse(client.baseURL)
if err != nil {
return nil, err
}
parsedURL.Path = path.Join(parsedURL.Path, endpoint)
request, err := http.NewRequest("", parsedURL.String(), body)
if err != nil {
panic(err)
}
client.request = request
client.addCommonHeaders()
return request, nil
}
func (client *httpClient) Post() error {
client.request.Method = "POST"
_, err := client.processRequest()
return err
}
func (client *httpClient) Delete() error {
client.request.Method = "DELETE"
_, err := client.processRequest()
return err
}
func (client *httpClient) Get(responseObject interface{}) error {
client.request.Method = "GET"
responseBody, err := client.processRequest()
if err != nil {
return err
}
err = json.NewDecoder(responseBody).Decode(&responseObject)
// TODO: Add logging again, it fails case we have a json.RawMessage in a struct
// TODO: uncomment when https://github.com/cloudfoundry/lager/pull/20 is fixed
// client.logger.Debug("Response body", lager.Data{"response": responseObject})
return err
}
func (client *httpClient) processRequest() (io.ReadCloser, error) {
client.logger.Debug("making request", lager.Data{
"URL": client.request.URL.String(),
"Method": client.request.Method,
})
response, err := client.client.Do(client.request)
if err != nil {
client.logger.Error("request failed", err)
panic("Catz!")
}
if response.StatusCode != 200 {
responseBody := map[string]interface{}{}
json.NewDecoder(response.Body).Decode(&responseBody)
return nil, fmt.Errorf("Request failed with %d. Info: %v", response.StatusCode, responseBody)
}
return response.Body, err
}
func (client *httpClient) addCommonHeaders() {
client.request.Header.Set("Content-Type", "application/json")
client.request.Header.Set("Authorization", client.authorization)
}