Cherry pick v1.7 into master

vendor/github.com/xenolf/lego/providers/dns/conoha/client.go

@@ -0,0 +1,205 @@
+package conoha
+
+import (
+	"bytes"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io/ioutil"
+	"net/http"
+)
+
+const (
+	identityBaseURL   = "https://identity.%s.conoha.io"
+	dnsServiceBaseURL = "https://dns-service.%s.conoha.io"
+)
+
+// IdentityRequest is an authentication request body.
+type IdentityRequest struct {
+	Auth Auth `json:"auth"`
+}
+
+// Auth is an authentication information.
+type Auth struct {
+	TenantID            string              `json:"tenantId"`
+	PasswordCredentials PasswordCredentials `json:"passwordCredentials"`
+}
+
+// PasswordCredentials is API-user's credentials.
+type PasswordCredentials struct {
+	Username string `json:"username"`
+	Password string `json:"password"`
+}
+
+// IdentityResponse is an authentication response body.
+type IdentityResponse struct {
+	Access Access `json:"access"`
+}
+
+// Access is an identity information.
+type Access struct {
+	Token Token `json:"token"`
+}
+
+// Token is an api access token.
+type Token struct {
+	ID string `json:"id"`
+}
+
+// DomainListResponse is a response of a domain listing request.
+type DomainListResponse struct {
+	Domains []Domain `json:"domains"`
+}
+
+// Domain is a hosted domain entry.
+type Domain struct {
+	ID   string `json:"id"`
+	Name string `json:"name"`
+}
+
+// RecordListResponse is a response of record listing request.
+type RecordListResponse struct {
+	Records []Record `json:"records"`
+}
+
+// Record is a record entry.
+type Record struct {
+	ID   string `json:"id,omitempty"`
+	Name string `json:"name"`
+	Type string `json:"type"`
+	Data string `json:"data"`
+	TTL  int    `json:"ttl"`
+}
+
+// Client is a ConoHa API client.
+type Client struct {
+	token      string
+	endpoint   string
+	httpClient *http.Client
+}
+
+// NewClient returns a client instance logged into the ConoHa service.
+func NewClient(region string, auth Auth, httpClient *http.Client) (*Client, error) {
+	if httpClient == nil {
+		httpClient = &http.Client{}
+	}
+
+	c := &Client{httpClient: httpClient}
+
+	c.endpoint = fmt.Sprintf(identityBaseURL, region)
+
+	identity, err := c.getIdentity(auth)
+	if err != nil {
+		return nil, fmt.Errorf("failed to login: %v", err)
+	}
+
+	c.token = identity.Access.Token.ID
+	c.endpoint = fmt.Sprintf(dnsServiceBaseURL, region)
+
+	return c, nil
+}
+
+func (c *Client) getIdentity(auth Auth) (*IdentityResponse, error) {
+	req := &IdentityRequest{Auth: auth}
+
+	identity := &IdentityResponse{}
+
+	err := c.do(http.MethodPost, "/v2.0/tokens", req, identity)
+	if err != nil {
+		return nil, err
+	}
+
+	return identity, nil
+}
+
+// GetDomainID returns an ID of specified domain.
+func (c *Client) GetDomainID(domainName string) (string, error) {
+	domainList := &DomainListResponse{}
+
+	err := c.do(http.MethodGet, "/v1/domains", nil, domainList)
+	if err != nil {
+		return "", err
+	}
+
+	for _, domain := range domainList.Domains {
+		if domain.Name == domainName {
+			return domain.ID, nil
+		}
+	}
+	return "", fmt.Errorf("no such domain: %s", domainName)
+}
+
+// GetRecordID returns an ID of specified record.
+func (c *Client) GetRecordID(domainID, recordName, recordType, data string) (string, error) {
+	recordList := &RecordListResponse{}
+
+	err := c.do(http.MethodGet, fmt.Sprintf("/v1/domains/%s/records", domainID), nil, recordList)
+	if err != nil {
+		return "", err
+	}
+
+	for _, record := range recordList.Records {
+		if record.Name == recordName && record.Type == recordType && record.Data == data {
+			return record.ID, nil
+		}
+	}
+	return "", errors.New("no such record")
+}
+
+// CreateRecord adds new record.
+func (c *Client) CreateRecord(domainID string, record Record) error {
+	return c.do(http.MethodPost, fmt.Sprintf("/v1/domains/%s/records", domainID), record, nil)
+}
+
+// DeleteRecord removes specified record.
+func (c *Client) DeleteRecord(domainID, recordID string) error {
+	return c.do(http.MethodDelete, fmt.Sprintf("/v1/domains/%s/records/%s", domainID, recordID), nil, nil)
+}
+
+func (c *Client) do(method, path string, payload, result interface{}) error {
+	body := bytes.NewReader(nil)
+
+	if payload != nil {
+		bodyBytes, err := json.Marshal(payload)
+		if err != nil {
+			return err
+		}
+		body = bytes.NewReader(bodyBytes)
+	}
+
+	req, err := http.NewRequest(method, c.endpoint+path, body)
+	if err != nil {
+		return err
+	}
+
+	req.Header.Set("Accept", "application/json")
+	req.Header.Set("Content-Type", "application/json")
+	req.Header.Set("X-Auth-Token", c.token)
+
+	resp, err := c.httpClient.Do(req)
+	if err != nil {
+		return err
+	}
+
+	if resp.StatusCode != http.StatusOK {
+		respBody, err := ioutil.ReadAll(resp.Body)
+		if err != nil {
+			return err
+		}
+		defer resp.Body.Close()
+
+		return fmt.Errorf("HTTP request failed with status code %d: %s", resp.StatusCode, string(respBody))
+	}
+
+	if result != nil {
+		respBody, err := ioutil.ReadAll(resp.Body)
+		if err != nil {
+			return err
+		}
+		defer resp.Body.Close()
+
+		return json.Unmarshal(respBody, result)
+	}
+
+	return nil
+}