--- /dev/null
+// -
+// ========================LICENSE_START=================================
+// O-RAN-SC
+// %%
+// Copyright (C) 2022: 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"
+ "encoding/json"
+ "fmt"
+ "io"
+ "net/http"
+ "net/http/httputil"
+
+ log "github.com/sirupsen/logrus"
+)
+
+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))
+}
+
+type Client struct {
+ httpClient *http.Client
+ verbose bool
+}
+
+func New(httpClient *http.Client, verbose bool) *Client {
+ return &Client{
+ httpClient: httpClient,
+ verbose: verbose,
+ }
+}
+
+func (c *Client) Get(path string, v interface{}, userInfo ...string) error {
+ var req *http.Request
+ var err error
+
+ if len(userInfo) > 1 {
+ req, err = c.newRequest(http.MethodGet, path, nil, userInfo[0], userInfo[1])
+ } else {
+ req, err = c.newRequest(http.MethodGet, path, nil)
+ }
+
+ if err != nil {
+ return fmt.Errorf("failed to create GET request: %w", err)
+ }
+
+ if err := c.doRequest(req, v); err != nil {
+ return err
+ }
+
+ return nil
+}
+
+func (c *Client) Post(path string, payload interface{}, v interface{}, userInfo ...string) error {
+ var req *http.Request
+ var err error
+
+ if len(userInfo) > 1 {
+ req, err = c.newRequest(http.MethodPost, path, payload, userInfo[0], userInfo[1])
+ } else {
+ req, err = c.newRequest(http.MethodPost, path, payload)
+ }
+
+ if err != nil {
+ return fmt.Errorf("failed to create POST request: %w", err)
+ }
+
+ if err := c.doRequest(req, v); err != nil {
+ return err
+ }
+
+ return nil
+}
+
+func (c *Client) Put(path string, payload interface{}, v interface{}, userInfo ...string) error {
+ var req *http.Request
+ var err error
+ if len(userInfo) > 1 {
+ req, err = c.newRequest(http.MethodPut, path, payload, userInfo[0], userInfo[1])
+ } else {
+ req, err = c.newRequest(http.MethodPut, path, payload)
+ }
+
+ if err != nil {
+ return fmt.Errorf("failed to create PUT request: %w", err)
+ }
+
+ if err := c.doRequest(req, v); err != nil {
+ return err
+ }
+
+ return nil
+}
+
+func (c *Client) Delete(path string, payload interface{}, v interface{}, userInfo ...string) error {
+ var req *http.Request
+ var err error
+ if len(userInfo) > 1 {
+ req, err = c.newRequest(http.MethodDelete, path, payload, userInfo[0], userInfo[1])
+ } else {
+ req, err = c.newRequest(http.MethodDelete, path, payload)
+ }
+
+ if err != nil {
+ return fmt.Errorf("failed to create Delete request: %w", err)
+ }
+
+ if err := c.doRequest(req, v); err != nil {
+ return err
+ }
+
+ return nil
+}
+
+func (c *Client) newRequest(method, path string, payload interface{}, userInfo ...string) (*http.Request, error) {
+ var reqBody io.Reader
+
+ if payload != nil {
+ bodyBytes, err := json.Marshal(payload)
+ if err != nil {
+ return nil, fmt.Errorf("failed to marshal request body: %w", err)
+ }
+ reqBody = bytes.NewReader(bodyBytes)
+ }
+
+ req, err := http.NewRequest(method, path, reqBody)
+
+ if err != nil {
+ return nil, fmt.Errorf("failed to create HTTP request: %w", err)
+ }
+
+ if len(userInfo) > 0 {
+ req.SetBasicAuth(userInfo[0], userInfo[1])
+ }
+
+ if reqBody != nil {
+ req.Header.Set("Content-Type", "application/json")
+ }
+
+ if c.verbose {
+ if reqDump, error := httputil.DumpRequest(req, true); error != nil {
+ fmt.Println(err)
+ } else {
+ fmt.Println(string(reqDump))
+ }
+ }
+
+ return req, nil
+}
+
+func (c *Client) doRequest(r *http.Request, v interface{}) error {
+ resp, err := c.do(r)
+ if err != nil {
+ return err
+ }
+
+ if resp == nil {
+ return nil
+ }
+ defer resp.Body.Close()
+
+ if v == nil {
+ return nil
+ }
+
+ dec := json.NewDecoder(resp.Body)
+ if err := dec.Decode(&v); err != nil {
+ return fmt.Errorf("could not parse response body: %w [%s:%s]", err, r.Method, r.URL.String())
+ }
+ log.Debugf("Http Client Response: %v\n", v)
+ return nil
+}
+
+func (c *Client) do(r *http.Request) (*http.Response, error) {
+ resp, err := c.httpClient.Do(r)
+ if err != nil {
+ return nil, fmt.Errorf("failed to make request [%s:%s]: %w", r.Method, r.URL.String(), err)
+ }
+
+ if c.verbose {
+ if responseDump, error := httputil.DumpResponse(resp, true); error != nil {
+ fmt.Println(err)
+ } else {
+ fmt.Println(string(responseDump))
+ }
+ }
+
+ if resp.StatusCode >= http.StatusOK && resp.StatusCode <= 299 {
+ return resp, nil
+ }
+
+ defer resp.Body.Close()
+ responseData, _ := io.ReadAll(resp.Body)
+
+ putError := RequestError{
+ StatusCode: resp.StatusCode,
+ Body: responseData,
+ }
+
+ return resp, putError
+}