/
client.go
317 lines (285 loc) · 8.06 KB
/
client.go
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package client
import (
"bytes"
"crypto/tls"
"encoding/json"
"errors"
"fmt"
"io"
"net/http"
"net/http/cookiejar"
"net/url"
"os"
"path"
"reflect"
"strconv"
"strings"
"time"
"github.com/asahipeak/terraform-provider-rizhiyi/client/utils"
)
// Declare constants for service package
const (
defaultTimeOut = time.Second * 30
defaultHost = "localhost:8089"
defaultScheme = "http"
MethodGet = "GET"
MethodPost = "POST"
MethodPut = "PUT"
MethodPatch = "PATCH"
MethodDelete = "DELETE"
envVarHTTPScheme = "HTTPScheme"
)
var defaultAuth = [2]string{"admin", "changeme"}
// A Client is used to communicate with rizhiyi endpoints
type Client struct {
authToken string
sessionKey string
auth [2]string
host string
httpClient *http.Client
userAgent string
}
// NewRequest creates a new HTTP Request and set proper header
func (c *Client) NewRequest(httpMethod, url string, body io.Reader) (*http.Request, error) {
request, err := http.NewRequest(httpMethod, url, body)
if err != nil {
return nil, err
}
if c.authToken != "" {
request.Header.Add("Authorization", "Bearer "+c.authToken)
} else if c.sessionKey != "" {
request.Header.Add("Authorization", "rizhiyi "+c.sessionKey)
} else {
request.SetBasicAuth(c.auth[0], c.auth[1])
}
request.Header.Set("Accept", "application/json")
request.Header.Set("User-Agent", c.userAgent)
return request, nil
}
func getEnv(key, defaultValue string) string {
if value, ok := os.LookupEnv(key); ok {
if value == "http" {
return value
}
}
return defaultValue
}
func (c *Client) BuildRizhiyiURL(queryValues url.Values, urlPathParts ...string) url.URL {
buildPath := ""
for _, pathPart := range urlPathParts {
pathPart = strings.ReplaceAll(pathPart, " ", "+") // url parameters cannot have spaces
buildPath = path.Join(buildPath, pathPart)
}
if queryValues == nil {
queryValues = url.Values{}
}
queryValues.Set("output_mode", "json")
queryValues.Set("count", "-1") // To avoid http response truncation
httpScheme := getEnv(envVarHTTPScheme, defaultScheme)
return url.URL{
Scheme: httpScheme,
Host: c.host,
Path: buildPath,
RawQuery: queryValues.Encode(),
}
}
// Do sends out request and returns HTTP response
func (c *Client) Do(req *http.Request) (*http.Response, error) {
response, err := c.httpClient.Do(req)
if err != nil {
return nil, err
}
return response, nil
}
// Get implements HTTP Get call
func (c *Client) Get(getURL url.URL) (*http.Response, error) {
return c.DoRequest(MethodGet, getURL, nil)
}
// Post implements HTTP POST call
func (c *Client) Post(postURL url.URL, body interface{}) (*http.Response, error) {
return c.DoRequest(MethodPost, postURL, body)
}
// Put implements HTTP PUT call
func (c *Client) Put(putURL url.URL, body interface{}) (*http.Response, error) {
return c.DoRequest(MethodPut, putURL, body)
}
// Delete implements HTTP DELETE call
func (c *Client) Delete(deleteURL url.URL) (*http.Response, error) {
return c.DoRequest(MethodDelete, deleteURL, nil)
}
// Patch implements HTTP Patch call
func (c *Client) Patch(patchURL url.URL, body interface{}) (*http.Response, error) {
return c.DoRequest(MethodPatch, patchURL, body)
}
// DoRequest creates and execute a new request
func (c *Client) DoRequest(method string, requestURL url.URL, body interface{}) (*http.Response, error) {
var buffer *bytes.Buffer
if contentBytes, ok := body.([]byte); ok {
buffer = bytes.NewBuffer(contentBytes)
} else {
if content, err := c.EncodeRequestBody(body); err == nil {
buffer = bytes.NewBuffer(content)
} else {
return nil, err
}
}
request, err := c.NewRequest(method, requestURL.String(), buffer)
if err != nil {
return nil, err
}
response, err := c.Do(request)
if err != nil {
return nil, err
}
return response, nil
}
func (c *Client) Login() (e error) {
loginURL := c.BuildRizhiyiURL(nil, "services", "auth", "login")
bodyValues := map[string]string{
"username": c.auth[0],
"password": c.auth[1],
}
response, err := c.Post(loginURL, bodyValues)
if response != nil {
defer response.Body.Close()
}
if err != nil {
return err
}
switch response.StatusCode {
case 200:
decoded := struct {
SessionKey string `json:"sessionKey"`
}{}
_ = json.NewDecoder(response.Body).Decode(&decoded)
c.sessionKey = decoded.SessionKey
default:
buf := new(bytes.Buffer)
_, _ = buf.ReadFrom(response.Body)
responseBody := buf.String()
err = errors.New(responseBody)
}
return err
}
// EncodeRequestBody takes a json string or object and serializes it to be used in request body
func (c *Client) EncodeRequestBody(content interface{}) ([]byte, error) {
if content != nil {
switch value := reflect.ValueOf(content); value.Kind() {
case reflect.String:
return []byte(value.String()), nil
case reflect.Map:
return c.EncodeObject(value.Interface())
case reflect.Struct:
return c.EncodeObject(value.Interface())
default:
return nil, &utils.HTTPError{Status: 400, Message: "Bad Request"}
}
}
return nil, nil
}
// EncodeObject encodes an object into url-encoded string
func (c *Client) EncodeObject(content interface{}) ([]byte, error) {
URLValues := url.Values{}
marshalContent, err := json.Marshal(content)
if err != nil {
return nil, err
}
var valueMap map[string]interface{}
if err := json.Unmarshal(marshalContent, &valueMap); err != nil {
return nil, err
}
for k, v := range valueMap {
//k = strings.ToLower(k)
switch val := v.(type) {
case []interface{}:
for _, ele := range val {
if encoded, err := encodeValue(ele); err == nil && len(encoded) > 0 {
URLValues.Add(k, encoded)
}
}
case map[string]interface{}:
for innerK, innerV := range val {
if encoded, err := encodeValue(innerV); err == nil && len(encoded) > 0 {
URLValues.Set(innerK, encoded)
}
}
default:
if encoded, err := encodeValue(val); err == nil && len(encoded) > 0 {
URLValues.Set(k, encoded)
}
}
}
return []byte(URLValues.Encode()), nil
}
func encodeValue(v interface{}) (string, error) {
switch val := v.(type) {
case string:
return val, nil
case bool:
return strconv.FormatBool(val), nil
case int:
return strconv.FormatInt(int64(val), 10), nil
case float32:
return strconv.FormatFloat(float64(val), 'f', -1, 32), nil
case float64:
return strconv.FormatFloat(float64(val), 'f', -1, 64), nil
default:
return "", fmt.Errorf("could not encode type %T", v)
}
}
// NewDefaultRizhiyidClient creates a Client with default values
func NewDefaultRizhiyidClient() (*Client, error) {
httpClient, err := NewRizhiyidHTTPClient(defaultTimeOut, true)
if err != nil {
return nil, err
}
c := &Client{auth: defaultAuth, host: defaultHost, httpClient: httpClient, userAgent: "Rizhiyi-simple-go-client"}
return c, nil
}
// NewRizhiyidClient creates a Client with custom values passed in
func NewRizhiyidClient(sessionKey string, auth [2]string, host string, httpClient *http.Client) (*Client, error) {
c, err := NewDefaultRizhiyidClient()
if err != nil {
return nil, err
}
c.auth = auth
c.host = host
c.sessionKey = sessionKey
if httpClient != nil {
c.httpClient = httpClient
}
return c, nil
}
// NewRizhiyidClient creates a Client with custom values passed in
func NewRizhiyidClientWithAuthToken(authToken string, auth [2]string, host string, httpClient *http.Client) (*Client, error) {
c, err := NewDefaultRizhiyidClient()
if err != nil {
return nil, err
}
c.auth = auth
c.host = host
c.authToken = authToken
if httpClient != nil {
c.httpClient = httpClient
}
return c, nil
}
// NewRizhiyidHTTPClient returns a HTTP Client with timeout and tls validation setup
func NewRizhiyidHTTPClient(timeout time.Duration, skipValidateTLS bool) (*http.Client, error) {
jar, err := cookiejar.New(nil)
if err != nil {
return nil, err
}
httpScheme := getEnv(envVarHTTPScheme, defaultScheme)
client := &http.Client{
Timeout: timeout,
Jar: jar,
}
if httpScheme != "http" {
client.Transport = &http.Transport{
Proxy: http.DefaultTransport.(*http.Transport).Proxy,
TLSClientConfig: &tls.Config{InsecureSkipVerify: skipValidateTLS},
}
}
return client, nil
}