106 lines
3.0 KiB
Go
106 lines
3.0 KiB
Go
package repository
|
||
|
||
import (
|
||
"context"
|
||
"fmt"
|
||
"io"
|
||
"log/slog"
|
||
"net/http"
|
||
"strings"
|
||
"time"
|
||
|
||
"github.com/Wei-Shaw/sub2api/internal/pkg/httpclient"
|
||
"github.com/Wei-Shaw/sub2api/internal/service"
|
||
)
|
||
|
||
type pricingRemoteClient struct {
|
||
httpClient *http.Client
|
||
}
|
||
|
||
// pricingRemoteClientError 代理初始化失败时的错误占位客户端
|
||
// 所有请求直接返回初始化错误，禁止回退到直连
|
||
type pricingRemoteClientError struct {
|
||
err error
|
||
}
|
||
|
||
func (c *pricingRemoteClientError) FetchPricingJSON(_ context.Context, _ string) ([]byte, error) {
|
||
return nil, c.err
|
||
}
|
||
|
||
func (c *pricingRemoteClientError) FetchHashText(_ context.Context, _ string) (string, error) {
|
||
return "", c.err
|
||
}
|
||
|
||
// NewPricingRemoteClient 创建定价数据远程客户端
|
||
// proxyURL 为空时直连，支持 http/https/socks5/socks5h 协议
|
||
// 代理配置失败时行为由 allowDirectOnProxyError 控制：
|
||
// - false（默认）：返回错误占位客户端，禁止回退到直连
|
||
// - true：回退到直连（仅限管理员显式开启）
|
||
func NewPricingRemoteClient(proxyURL string, allowDirectOnProxyError bool) service.PricingRemoteClient {
|
||
// 安全说明：httpclient.GetClient 的错误链（url.Parse / proxyutil）不含明文代理凭据，
|
||
// 但仍通过 slog 仅在服务端日志记录，不会暴露给 HTTP 响应。
|
||
sharedClient, err := httpclient.GetClient(httpclient.Options{
|
||
Timeout: 30 * time.Second,
|
||
ProxyURL: proxyURL,
|
||
})
|
||
if err != nil {
|
||
if strings.TrimSpace(proxyURL) != "" && !allowDirectOnProxyError {
|
||
slog.Warn("proxy client init failed, all requests will fail", "service", "pricing", "error", err)
|
||
return &pricingRemoteClientError{err: fmt.Errorf("proxy client init failed and direct fallback is disabled; set security.proxy_fallback.allow_direct_on_error=true to allow fallback: %w", err)}
|
||
}
|
||
sharedClient = &http.Client{Timeout: 30 * time.Second}
|
||
}
|
||
return &pricingRemoteClient{
|
||
httpClient: sharedClient,
|
||
}
|
||
}
|
||
|
||
func (c *pricingRemoteClient) FetchPricingJSON(ctx context.Context, url string) ([]byte, error) {
|
||
req, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil)
|
||
if err != nil {
|
||
return nil, err
|
||
}
|
||
|
||
resp, err := c.httpClient.Do(req)
|
||
if err != nil {
|
||
return nil, err
|
||
}
|
||
defer func() { _ = resp.Body.Close() }()
|
||
|
||
if resp.StatusCode != http.StatusOK {
|
||
return nil, fmt.Errorf("HTTP %d", resp.StatusCode)
|
||
}
|
||
|
||
return io.ReadAll(resp.Body)
|
||
}
|
||
|
||
func (c *pricingRemoteClient) FetchHashText(ctx context.Context, url string) (string, error) {
|
||
req, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil)
|
||
if err != nil {
|
||
return "", err
|
||
}
|
||
|
||
resp, err := c.httpClient.Do(req)
|
||
if err != nil {
|
||
return "", err
|
||
}
|
||
defer func() { _ = resp.Body.Close() }()
|
||
|
||
if resp.StatusCode != http.StatusOK {
|
||
return "", fmt.Errorf("HTTP %d", resp.StatusCode)
|
||
}
|
||
|
||
body, err := io.ReadAll(resp.Body)
|
||
if err != nil {
|
||
return "", err
|
||
}
|
||
|
||
// 哈希文件格式：hash filename 或者纯 hash
|
||
hash := strings.TrimSpace(string(body))
|
||
parts := strings.Fields(hash)
|
||
if len(parts) > 0 {
|
||
return parts[0], nil
|
||
}
|
||
return hash, nil
|
||
}
|