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75 lines
2.3 KiB
Go
75 lines
2.3 KiB
Go
package provider
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import (
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"errors"
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"fmt"
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"net/http"
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"github.com/alibaba/higress/plugins/wasm-go/extensions/ai-proxy/util"
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"github.com/alibaba/higress/plugins/wasm-go/pkg/wrapper"
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"github.com/higress-group/proxy-wasm-go-sdk/proxywasm/types"
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)
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// ollamaProvider is the provider for Ollama service.
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type ollamaProviderInitializer struct {
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}
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func (m *ollamaProviderInitializer) ValidateConfig(config *ProviderConfig) error {
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if config.ollamaServerHost == "" {
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return errors.New("missing ollamaServerHost in provider config")
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}
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if config.ollamaServerPort == 0 {
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return errors.New("missing ollamaServerPort in provider config")
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}
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return nil
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}
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func (m *ollamaProviderInitializer) DefaultCapabilities() map[string]string {
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return map[string]string{
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// ollama的chat接口path和OpenAI的chat接口一样
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string(ApiNameChatCompletion): PathOpenAIChatCompletions,
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string(ApiNameEmbeddings): PathOpenAIEmbeddings,
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string(ApiNameModels): PathOpenAIModels,
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}
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}
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func (m *ollamaProviderInitializer) CreateProvider(config ProviderConfig) (Provider, error) {
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serverPortStr := fmt.Sprintf("%d", config.ollamaServerPort)
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serviceDomain := config.ollamaServerHost + ":" + serverPortStr
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config.setDefaultCapabilities(m.DefaultCapabilities())
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return &ollamaProvider{
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config: config,
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serviceDomain: serviceDomain,
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contextCache: createContextCache(&config),
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}, nil
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}
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type ollamaProvider struct {
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config ProviderConfig
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serviceDomain string
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contextCache *contextCache
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}
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func (m *ollamaProvider) GetProviderType() string {
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return providerTypeOllama
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}
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func (m *ollamaProvider) 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 *ollamaProvider) 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, nil
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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 *ollamaProvider) 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, m.serviceDomain)
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headers.Del("Content-Length")
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}
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