#10: implement Cloudflare DNS automation engine (13 records & system aliases)
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Lucas Rayan committed
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@@ -0,0 +1,245 @@
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package cloudflare
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import (
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"bytes"
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"context"
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"encoding/json"
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"fmt"
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"net/http"
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"net/url"
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"lambdamail/protocols/internal/application/port"
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"lambdamail/protocols/internal/domain/entity"
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)
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type CloudflareAdapter struct {
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apiToken string
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baseURL string
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httpClient *http.Client
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}
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func NewCloudflareAdapter(apiToken string) *CloudflareAdapter {
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return &CloudflareAdapter{
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apiToken: apiToken,
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baseURL: "https://api.cloudflare.com/client/v4",
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httpClient: &http.Client{},
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}
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}
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type cfZoneResponse struct {
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Success bool `json:"success"`
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Result []struct {
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ID string `json:"id"`
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Name string `json:"name"`
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} `json:"result"`
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Errors []struct {
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Message string `json:"message"`
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} `json:"errors"`
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}
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type cfRecord struct {
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ID string `json:"id,omitempty"`
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Type string `json:"type"`
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Name string `json:"name"`
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Content string `json:"content"`
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TTL int `json:"ttl"`
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Priority *int `json:"priority,omitempty"`
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Proxied bool `json:"proxied,omitempty"`
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Comment string `json:"comment,omitempty"`
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}
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type cfRecordResponse struct {
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Success bool `json:"success"`
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Result []cfRecord `json:"result"`
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Errors []struct {
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Message string `json:"message"`
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} `json:"errors"`
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}
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type cfSingleRecordResponse struct {
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Success bool `json:"success"`
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Result cfRecord `json:"result"`
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Errors []struct {
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Message string `json:"message"`
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} `json:"errors"`
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}
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func (a *CloudflareAdapter) GetZoneID(ctx context.Context, domainName string) (string, error) {
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reqURL := fmt.Sprintf("%s/zones?name=%s", a.baseURL, url.QueryEscape(domainName))
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req, err := http.NewRequestWithContext(ctx, http.MethodGet, reqURL, nil)
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if err != nil {
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return "", err
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}
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a.setHeaders(req)
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resp, err := a.httpClient.Do(req)
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if err != nil {
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return "", err
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}
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defer resp.Body.Close()
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var data cfZoneResponse
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if err := json.NewDecoder(resp.Body).Decode(&data); err != nil {
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return "", fmt.Errorf("decode json: %w", err)
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}
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if !data.Success || len(data.Result) == 0 {
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errMsg := "zone not found"
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if len(data.Errors) > 0 {
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errMsg = data.Errors[0].Message
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}
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return "", fmt.Errorf("cloudflare API error: %s", errMsg)
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}
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return data.Result[0].ID, nil
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}
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func (a *CloudflareAdapter) ListRecords(ctx context.Context, zoneID string) ([]entity.DnsRecord, error) {
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reqURL := fmt.Sprintf("%s/zones/%s/dns_records?per_page=100", a.baseURL, zoneID)
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req, err := http.NewRequestWithContext(ctx, http.MethodGet, reqURL, nil)
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if err != nil {
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return nil, err
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}
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a.setHeaders(req)
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resp, err := a.httpClient.Do(req)
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if err != nil {
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return nil, err
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}
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defer resp.Body.Close()
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var data cfRecordResponse
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if err := json.NewDecoder(resp.Body).Decode(&data); err != nil {
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return nil, fmt.Errorf("decode json: %w", err)
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}
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if !data.Success {
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return nil, fmt.Errorf("cloudflare API error listing records")
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}
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var out []entity.DnsRecord
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for _, r := range data.Result {
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out = append(out, entity.DnsRecord{
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ID: r.ID,
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Type: r.Type,
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Name: r.Name,
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Value: r.Content,
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TTL: r.TTL,
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Priority: r.Priority,
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Proxied: r.Proxied,
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Comment: r.Comment,
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})
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}
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return out, nil
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}
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func (a *CloudflareAdapter) CreateRecord(ctx context.Context, zoneID string, record entity.DnsRecord) error {
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reqURL := fmt.Sprintf("%s/zones/%s/dns_records", a.baseURL, zoneID)
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cfBody := cfRecord{
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Type: record.Type,
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Name: record.Name,
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Content: record.Value,
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TTL: record.TTL,
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Priority: record.Priority,
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Proxied: record.Proxied,
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Comment: record.Comment,
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}
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payload, err := json.Marshal(cfBody)
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if err != nil {
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return err
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}
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req, err := http.NewRequestWithContext(ctx, http.MethodPost, reqURL, bytes.NewBuffer(payload))
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if err != nil {
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return err
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}
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a.setHeaders(req)
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resp, err := a.httpClient.Do(req)
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if err != nil {
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return err
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}
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defer resp.Body.Close()
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var data cfSingleRecordResponse
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if err := json.NewDecoder(resp.Body).Decode(&data); err != nil {
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return err
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}
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if !data.Success {
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errMsg := "create record failed"
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if len(data.Errors) > 0 {
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errMsg = data.Errors[0].Message
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}
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return fmt.Errorf("cloudflare API error: %s", errMsg)
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}
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return nil
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}
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func (a *CloudflareAdapter) UpdateRecord(ctx context.Context, zoneID string, record entity.DnsRecord) error {
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reqURL := fmt.Sprintf("%s/zones/%s/dns_records/%s", a.baseURL, zoneID, record.ID)
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cfBody := cfRecord{
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Type: record.Type,
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Name: record.Name,
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Content: record.Value,
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TTL: record.TTL,
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Priority: record.Priority,
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Proxied: record.Proxied,
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Comment: record.Comment,
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}
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payload, err := json.Marshal(cfBody)
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if err != nil {
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return err
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}
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req, err := http.NewRequestWithContext(ctx, http.MethodPut, reqURL, bytes.NewBuffer(payload))
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if err != nil {
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return err
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}
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a.setHeaders(req)
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resp, err := a.httpClient.Do(req)
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if err != nil {
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return err
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}
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defer resp.Body.Close()
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var data cfSingleRecordResponse
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if err := json.NewDecoder(resp.Body).Decode(&data); err != nil {
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return err
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}
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if !data.Success {
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return fmt.Errorf("cloudflare API error updating record")
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}
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return nil
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}
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func (a *CloudflareAdapter) DeleteRecord(ctx context.Context, zoneID string, recordID string) error {
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reqURL := fmt.Sprintf("%s/zones/%s/dns_records/%s", a.baseURL, zoneID, recordID)
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req, err := http.NewRequestWithContext(ctx, http.MethodDelete, reqURL, nil)
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if err != nil {
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return err
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}
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a.setHeaders(req)
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resp, err := a.httpClient.Do(req)
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if err != nil {
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return err
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}
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defer resp.Body.Close()
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return nil
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}
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func (a *CloudflareAdapter) setHeaders(req *http.Request) {
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req.Header.Set("Authorization", "Bearer "+a.apiToken)
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req.Header.Set("Content-Type", "application/json")
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}
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// Ensure port interface compliance
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var _ port.DnsProvider = (*CloudflareAdapter)(nil)
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