Ai proxy support coze (#1387)

Author: rinfx

plugins/wasm-go/extensions/ai-proxy/README.md

@@ -669,6 +669,18 @@ provider:
   timeout: 1200000
 ```
 
+### 使用 original 协议代理 Coze 应用
+
+**配置信息**
+
+```yaml
+provider:
+  type: coze
+  apiTokens:
+    - YOUR_COZE_API_KEY
+  protocol: original
+```
+
 ### 使用月之暗面配合其原生的文件上下文
 
 提前上传文件至月之暗面，以文件内容作为上下文使用其 AI 服务。

plugins/wasm-go/extensions/ai-proxy/README_EN.md

@@ -656,6 +656,16 @@ providers:
   timeout: 1200000
 ```
 
+### Using original Protocol Proxy for Coze applications
+
+```yaml
+provider:
+  type: coze
+  apiTokens:
+    - YOUR_COZE_API_KEY
+  protocol: original
+```
+
 ### Utilizing Moonshot with its Native File Context
 
 Upload files to Moonshot in advance and use its AI services based on file content.

plugins/wasm-go/extensions/ai-proxy/provider/coze.go

@@ -0,0 +1,44 @@
+package provider
+
+import (
+	"errors"
+
+	"github.com/alibaba/higress/plugins/wasm-go/extensions/ai-proxy/util"
+	"github.com/alibaba/higress/plugins/wasm-go/pkg/wrapper"
+	"github.com/higress-group/proxy-wasm-go-sdk/proxywasm/types"
+)
+
+const (
+	cozeDomain = "api.coze.cn"
+)
+
+type cozeProviderInitializer struct{}
+
+func (m *cozeProviderInitializer) ValidateConfig(config ProviderConfig) error {
+	if config.apiTokens == nil || len(config.apiTokens) == 0 {
+		return errors.New("no apiToken found in provider config")
+	}
+	return nil
+}
+
+func (m *cozeProviderInitializer) CreateProvider(config ProviderConfig) (Provider, error) {
+	return &cozeProvider{
+		config:       config,
+		contextCache: createContextCache(&config),
+	}, nil
+}
+
+type cozeProvider struct {
+	config       ProviderConfig
+	contextCache *contextCache
+}
+
+func (m *cozeProvider) GetProviderType() string {
+	return providerTypeCoze
+}
+
+func (m *cozeProvider) OnRequestHeaders(ctx wrapper.HttpContext, apiName ApiName, log wrapper.Log) (types.Action, error) {
+	_ = util.OverwriteRequestHost(cozeDomain)
+	_ = util.OverwriteRequestAuthorization("Bearer " + m.config.GetRandomToken())
+	return types.ActionContinue, nil
+}

plugins/wasm-go/extensions/ai-proxy/provider/provider.go

@@ -42,6 +42,7 @@ const (
 	providerTypeMistral    = "mistral"
 	providerTypeCohere     = "cohere"
 	providerTypeDoubao     = "doubao"
+	providerTypeCoze       = "coze"
 
 	protocolOpenAI   = "openai"
 	protocolOriginal = "original"
@@ -101,6 +102,7 @@ var (
 		providerTypeMistral:    &mistralProviderInitializer{},
 		providerTypeCohere:     &cohereProviderInitializer{},
 		providerTypeDoubao:     &doubaoProviderInitializer{},
+		providerTypeCoze:       &cozeProviderInitializer{},
 	}
 )