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77 lines
2.3 KiB
Go
77 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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"net/url"
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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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// azureProvider is the provider for Azure OpenAI service.
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type azureProviderInitializer struct {
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}
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func (m *azureProviderInitializer) ValidateConfig(config ProviderConfig) error {
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if config.azureServiceUrl == "" {
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return errors.New("missing azureServiceUrl in provider config")
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}
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if _, err := url.Parse(config.azureServiceUrl); err != nil {
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return fmt.Errorf("invalid azureServiceUrl: %w", err)
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}
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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 *azureProviderInitializer) CreateProvider(config ProviderConfig) (Provider, error) {
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var serviceUrl *url.URL
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if u, err := url.Parse(config.azureServiceUrl); err != nil {
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return nil, fmt.Errorf("invalid azureServiceUrl: %w", err)
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} else {
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serviceUrl = u
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}
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return &azureProvider{
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config: config,
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serviceUrl: serviceUrl,
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contextCache: createContextCache(&config),
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}, nil
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}
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type azureProvider struct {
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config ProviderConfig
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contextCache *contextCache
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serviceUrl *url.URL
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}
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func (m *azureProvider) GetProviderType() string {
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return providerTypeAzure
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}
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func (m *azureProvider) OnRequestHeaders(ctx wrapper.HttpContext, apiName ApiName, log wrapper.Log) (types.Action, error) {
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if apiName != ApiNameChatCompletion {
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return types.ActionContinue, errUnsupportedApiName
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}
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m.config.handleRequestHeaders(m, ctx, apiName, log)
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return types.ActionContinue, nil
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}
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func (m *azureProvider) OnRequestBody(ctx wrapper.HttpContext, apiName ApiName, body []byte, log wrapper.Log) (types.Action, error) {
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if apiName != ApiNameChatCompletion {
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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, log)
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}
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func (m *azureProvider) TransformRequestHeaders(ctx wrapper.HttpContext, apiName ApiName, headers http.Header, log wrapper.Log) {
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util.OverwriteRequestPathHeader(headers, m.serviceUrl.RequestURI())
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util.OverwriteRequestHostHeader(headers, m.serviceUrl.Host)
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util.OverwriteRequestAuthorizationHeader(headers, "api-key "+m.config.GetApiTokenInUse(ctx))
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headers.Del("Content-Length")
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}
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