feat(server): API relay gateway backend M0-M4

Gin + GORM + pure-Go SQLite. Users/auth (JWT), API key management with quotas, proxy gateway with weighted channel failover and health checks, usage/billing ledger, cross-protocol conversion (Anthropic Messages / OpenAI Chat Completions / OpenAI Responses), and channel/model admin API. Channels declare native API formats and auto-convert the rest. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
2026-08-15 21:05:02 +08:00
parent b0c7439c01
commit d0e31b198f
45 changed files with 6222 additions and 0 deletions
@@ -0,0 +1,50 @@
+package claude
+
+import "encoding/json"
+
+// Request is an Anthropic Messages request.
+type Request struct {
+	Model         string          `json:"model"`
+	MaxTokens     int             `json:"max_tokens"`
+	Stream        bool            `json:"stream"`
+	System        json.RawMessage `json:"system"`
+	Messages      json.RawMessage `json:"messages"`
+	Temperature   *float64        `json:"temperature"`
+	TopP          *float64        `json:"top_p"`
+	TopK          *int            `json:"top_k"`
+	StopSequences json.RawMessage `json:"stop_sequences"`
+	Tools         json.RawMessage `json:"tools"`
+	ToolChoice    json.RawMessage `json:"tool_choice"`
+	Metadata      json.RawMessage `json:"metadata"`
+}
+
+// Usage is the Claude usage block.
+type Usage struct {
+	InputTokens              int64 `json:"input_tokens"`
+	OutputTokens             int64 `json:"output_tokens"`
+	CacheReadInputTokens     int64 `json:"cache_read_input_tokens,omitempty"`
+	CacheCreationInputTokens int64 `json:"cache_creation_input_tokens,omitempty"`
+}
+
+// MessageResponse is the non-stream response.
+type MessageResponse struct {
+	ID         string          `json:"id"`
+	Type       string          `json:"type"`
+	Role       string          `json:"role"`
+	Model      string          `json:"model"`
+	Content    json.RawMessage `json:"content"`
+	StopReason string          `json:"stop_reason"`
+	StopSequence string        `json:"stop_sequence"`
+	Usage      *Usage          `json:"usage"`
+}
+
+// StreamEvent is one event in the Claude streaming event sequence.
+type StreamEvent struct {
+	Type      string          `json:"type"`
+	Message   json.RawMessage `json:"message,omitempty"`
+	Index     *int            `json:"index,omitempty"`
+	Delta     json.RawMessage `json:"delta,omitempty"`
+	Usage     json.RawMessage `json:"usage,omitempty"`
+	ContentBlock json.RawMessage `json:"content_block,omitempty"`
+	Error     json.RawMessage `json:"error,omitempty"`
+}