Seed code

[nonrtric/rapp/orufhrecovery.git] / goversion / internal / restclient / client.go

diff --git a/goversion/internal/restclient/client.go b/goversion/internal/restclient/client.go
new file mode 100644 (file)
index 0000000..fdd0549
--- /dev/null
+++ b/goversion/internal/restclient/client.go
@@ -0,0 +1,132 @@
+// -
+//   ========================LICENSE_START=================================
+//   O-RAN-SC
+//   %%
+//   Copyright (C) 2021: Nordix Foundation
+//   %%
+//   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.
+//   ========================LICENSE_END===================================
+//
+
+package restclient
+
+import (
+       "bytes"
+       "crypto/tls"
+       "fmt"
+       "io"
+       "math"
+       "net/http"
+       "net/url"
+       "time"
+
+       "github.com/hashicorp/go-retryablehttp"
+)
+
+type RequestError struct {
+       StatusCode int
+       Body       []byte
+}
+
+func (e RequestError) Error() string {
+       return fmt.Sprintf("error response with status: %v and body: %v", e.StatusCode, string(e.Body))
+}
+
+// HTTPClient interface
+type HTTPClient interface {
+       Get(url string) (*http.Response, error)
+
+       Do(*http.Request) (*http.Response, error)
+}
+
+func PutWithoutAuth(url string, body []byte, client HTTPClient) error {
+       return do(http.MethodPut, url, body, client)
+}
+
+func Put(url string, body string, client HTTPClient, userName string, password string) error {
+       return do(http.MethodPut, url, []byte(body), client, userName, password)
+}
+
+func Delete(url string, client HTTPClient) error {
+       return do(http.MethodDelete, url, nil, client)
+}
+
+func CreateClientCertificate(certPath string, keyPath string) (tls.Certificate, error) {
+       if cert, err := tls.LoadX509KeyPair(certPath, keyPath); err == nil {
+               return cert, nil
+       } else {
+               return tls.Certificate{}, fmt.Errorf("cannot create x509 keypair from cert file %s and key file %s due to: %v", certPath, keyPath, err)
+       }
+}
+
+func CreateRetryClient(cert tls.Certificate) *http.Client {
+       rawRetryClient := retryablehttp.NewClient()
+       rawRetryClient.RetryWaitMax = time.Minute
+       rawRetryClient.RetryMax = math.MaxInt
+       rawRetryClient.HTTPClient.Transport = getSecureTransportWithoutVerify(cert)
+
+       client := rawRetryClient.StandardClient()
+       return client
+}
+
+func IsUrlSecure(configUrl string) bool {
+       u, _ := url.Parse(configUrl)
+       return u.Scheme == "https"
+}
+
+func getSecureTransportWithoutVerify(cert tls.Certificate) *http.Transport {
+       return &http.Transport{
+               TLSClientConfig: &tls.Config{
+                       Certificates: []tls.Certificate{
+                               cert,
+                       },
+                       InsecureSkipVerify: true,
+               },
+       }
+}
+
+func do(method string, url string, body []byte, client HTTPClient, userInfo ...string) error {
+       if req, reqErr := http.NewRequest(method, url, bytes.NewBuffer(body)); reqErr == nil {
+               if body != nil {
+                       req.Header.Set("Content-Type", "application/json; charset=utf-8")
+               }
+               if len(userInfo) > 0 {
+                       req.SetBasicAuth(userInfo[0], userInfo[1])
+               }
+               if response, respErr := client.Do(req); respErr == nil {
+                       if isResponseSuccess(response.StatusCode) {
+                               return nil
+                       } else {
+                               return getResponseError(response)
+                       }
+               } else {
+                       return respErr
+               }
+       } else {
+               return reqErr
+       }
+}
+
+func isResponseSuccess(statusCode int) bool {
+       return statusCode >= http.StatusOK && statusCode <= 299
+}
+
+func getResponseError(response *http.Response) RequestError {
+       defer response.Body.Close()
+       responseData, _ := io.ReadAll(response.Body)
+       putError := RequestError{
+               StatusCode: response.StatusCode,
+               Body:       responseData,
+       }
+       return putError
+}