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85 lines
2.6 KiB
Go
85 lines
2.6 KiB
Go
package provider
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import (
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"errors"
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"net/http"
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"strings"
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"github.com/alibaba/higress/plugins/wasm-go/extensions/ai-proxy/util"
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"github.com/higress-group/proxy-wasm-go-sdk/proxywasm/types"
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"github.com/higress-group/wasm-go/pkg/wrapper"
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)
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const (
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zhipuAiDomain = "open.bigmodel.cn"
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zhipuAiChatCompletionPath = "/api/paas/v4/chat/completions"
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zhipuAiEmbeddingsPath = "/api/paas/v4/embeddings"
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zhipuAiAnthropicMessagesPath = "/api/anthropic/v1/messages"
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)
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type zhipuAiProviderInitializer struct{}
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func (m *zhipuAiProviderInitializer) ValidateConfig(config *ProviderConfig) error {
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if config.apiTokens == nil || len(config.apiTokens) == 0 {
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return errors.New("no apiToken found in provider config")
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}
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return nil
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}
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func (m *zhipuAiProviderInitializer) DefaultCapabilities() map[string]string {
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return map[string]string{
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string(ApiNameChatCompletion): zhipuAiChatCompletionPath,
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string(ApiNameEmbeddings): zhipuAiEmbeddingsPath,
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string(ApiNameAnthropicMessages): zhipuAiAnthropicMessagesPath,
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}
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}
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func (m *zhipuAiProviderInitializer) CreateProvider(config ProviderConfig) (Provider, error) {
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config.setDefaultCapabilities(m.DefaultCapabilities())
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return &zhipuAiProvider{
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config: config,
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contextCache: createContextCache(&config),
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}, nil
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}
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type zhipuAiProvider struct {
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config ProviderConfig
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contextCache *contextCache
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}
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func (m *zhipuAiProvider) GetProviderType() string {
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return providerTypeZhipuAi
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}
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func (m *zhipuAiProvider) OnRequestHeaders(ctx wrapper.HttpContext, apiName ApiName) error {
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m.config.handleRequestHeaders(m, ctx, apiName)
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return nil
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}
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func (m *zhipuAiProvider) OnRequestBody(ctx wrapper.HttpContext, apiName ApiName, body []byte) (types.Action, error) {
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if !m.config.isSupportedAPI(apiName) {
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return types.ActionContinue, errUnsupportedApiName
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}
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return m.config.handleRequestBody(m, m.contextCache, ctx, apiName, body)
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}
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func (m *zhipuAiProvider) TransformRequestHeaders(ctx wrapper.HttpContext, apiName ApiName, headers http.Header) {
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util.OverwriteRequestPathHeaderByCapability(headers, string(apiName), m.config.capabilities)
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util.OverwriteRequestHostHeader(headers, zhipuAiDomain)
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util.OverwriteRequestAuthorizationHeader(headers, "Bearer "+m.config.GetApiTokenInUse(ctx))
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headers.Del("Content-Length")
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}
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func (m *zhipuAiProvider) GetApiName(path string) ApiName {
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if strings.Contains(path, zhipuAiChatCompletionPath) {
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return ApiNameChatCompletion
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}
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if strings.Contains(path, zhipuAiEmbeddingsPath) {
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return ApiNameEmbeddings
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}
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if strings.Contains(path, zhipuAiAnthropicMessagesPath) {
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return ApiNameAnthropicMessages
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}
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return ""
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}
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