487 lines
18 KiB
Go
487 lines
18 KiB
Go
package executor
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import (
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"bufio"
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"bytes"
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"context"
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"fmt"
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"io"
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"net/http"
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"strings"
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"github.com/router-for-me/CLIProxyAPI/v7/internal/runtime/executor/helps"
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"github.com/router-for-me/CLIProxyAPI/v7/internal/thinking"
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cliproxyauth "github.com/router-for-me/CLIProxyAPI/v7/sdk/cliproxy/auth"
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cliproxyexecutor "github.com/router-for-me/CLIProxyAPI/v7/sdk/cliproxy/executor"
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sdktranslator "github.com/router-for-me/CLIProxyAPI/v7/sdk/translator"
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log "github.com/sirupsen/logrus"
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"github.com/tidwall/gjson"
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)
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func (e *ClaudeExecutor) ExecuteStream(ctx context.Context, auth *cliproxyauth.Auth, req cliproxyexecutor.Request, opts cliproxyexecutor.Options) (_ *cliproxyexecutor.StreamResult, err error) {
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if opts.Alt == "responses/compact" {
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return nil, statusErr{code: http.StatusNotImplemented, msg: "/responses/compact not supported"}
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}
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baseModel := thinking.ParseSuffix(req.Model).ModelName
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upstreamModel := e.upstreamModel(baseModel)
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apiKey, baseURL := claudeCreds(auth)
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if baseURL == "" {
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baseURL = "https://api.anthropic.com"
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}
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url := fmt.Sprintf("%s/v1/messages?beta=true", baseURL)
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fp := resolveClaudeFingerprintPolicy(e.cfg, auth, apiKey)
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defer func() {
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if cancelErr := newClaudeOAuthCancellationError(ctx, fp.OAuthCancellation, err); cancelErr != nil {
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err = cancelErr
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}
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}()
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// Same split as Execute: OAuth signs everywhere, an opted-in API key only on
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// upstreams the native gate accepts.
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cchSigning := claudeCCHSigningEnabled(apiKey, claudeCCHUpstreamAnthropic, fp.ProfileClaudeCodeCLI, url)
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reporter := helps.NewExecutorUsageReporter(ctx, e, baseModel, auth)
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defer reporter.TrackFailure(ctx, &err)
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from := opts.SourceFormat
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responseFormat := cliproxyexecutor.ResponseFormatOrSource(opts)
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to := sdktranslator.FromString("claude")
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var replayScope claudeThinkingReplayScope
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if claudeThinkingReplayEnabled(auth, req, opts) {
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req, replayScope = prepareClaudeThinkingReplayRequest(ctx, auth, req, opts)
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}
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defer func() {
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if err != nil && replayScope.replayApplied && shouldClearKimiThinkingReplayAfterError(err) {
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clearClaudeThinkingReplayContent(ctx, replayScope)
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}
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}()
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originalPayloadSource := req.Payload
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if len(opts.OriginalRequest) > 0 {
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originalPayloadSource = opts.OriginalRequest
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}
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originalPayload := originalPayloadSource
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incomingHeaders, claudeCodeDetection := detectIncomingClaudeCodeRequest(ctx, opts.Headers, originalPayload, false, e.cfg)
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confirmedClaudeCode := claudeCodeDetection.Confirmed
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claudeSessionID := ""
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if fp.ProfileClaudeCodeCLI {
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claudeSessionID = helps.ClaudeAgentSessionUUIDForRequest(incomingHeaders, originalPayload, req.Payload, confirmedClaudeCode, opts.Metadata, req.Metadata)
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}
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originalTranslated := helps.TranslateRequestWithAPIKeyModelCompatibility(ctx, opts.Headers, e.cfg, from, to, baseModel, originalPayload, true, helps.APIKeyModelIsCompat(req))
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body := helps.TranslateRequestWithAPIKeyModelCompatibility(ctx, opts.Headers, e.cfg, from, to, baseModel, req.Payload, true, helps.APIKeyModelIsCompat(req))
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body = helps.SetStringIfDifferent(body, "model", upstreamModel)
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body, err = helps.ApplyRequestThinking(body, req, opts, from.String(), to.String(), e.Identifier())
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if err != nil {
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return nil, err
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}
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if rebuildMidSystemMessageEnabled(e.cfg, auth) {
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body = rebuildMidSystemMessagesToTopLevel(body)
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}
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// Apply cloaking (system prompt injection, fake user ID, sensitive word obfuscation)
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// based on client type and configuration.
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bodyBeforeCloaking := body
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var cloaked bool
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body, cloaked, err = applyCloaking(
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ctx,
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e.cfg,
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auth,
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body,
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apiKey,
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confirmedClaudeCode,
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cchSigning,
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)
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if err != nil {
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return nil, err
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}
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systemPlacementState := captureClaudeCodeSystemPlacement(bodyBeforeCloaking, body, cloaked)
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// Only the Messages endpoint on Anthropic itself was captured; count_tokens
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// keeps its own shape and other gateways never see this field.
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diagnosticsState := claudeDiagnosticsRequestState{}
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contextManagementState := claudeCodeContextManagementState{
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eligible: cloaked && isAnthropicUpstreamBase(baseURL),
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callerOwned: gjson.GetBytes(body, "context_management").Exists(),
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}
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if contextManagementState.eligible {
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body, contextManagementState.automaticallyInjected = injectClaudeCodeContextManagement(body)
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if fp.InjectDiagnostics {
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body, diagnosticsState = injectClaudeDiagnostics(body, auth, claudeSessionID)
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}
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}
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requestedModel := helps.PayloadRequestedModel(opts, req.Model)
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requestPath := helps.PayloadRequestPath(opts)
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body, contextManagementState.payloadRuleTouched = helps.ApplyPayloadConfigWithRequestTracked(e.cfg, baseModel, to.String(), from.String(), "", body, originalTranslated, requestedModel, requestPath, opts.Headers, "context_management")
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body = reconcileClaudeCodeSystemPlacementAfterPayload(body, systemPlacementState)
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body = ensureModelMaxTokens(body, baseModel)
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// Disable thinking if tool_choice forces tool use (Anthropic API constraint)
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body = disableThinkingIfToolChoiceForced(body)
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body = reconcileClaudeCodeContextManagement(body, contextManagementState)
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body = normalizeClaudeSamplingForUpstream(body, confirmedClaudeCode)
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// Default cache_control for translated entrypoints (Responses/Chat/Gemini) and other
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// non-native callers. Confirmed native Claude Code owns its marker placement and must
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// not be rewritten. Cloaked requests always run section-independent ensure so cloaking's
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// first-user marker cannot suppress system/latest-user breakpoints.
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// cloaked and confirmedClaudeCode are mutually exclusive: resolveClaudeWirePolicy
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// forces Cloak off for a confirmed native client.
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cpaOwnsCacheControl := shouldEnsureCacheControl(body, cloaked, confirmedClaudeCode)
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if cpaOwnsCacheControl {
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body = ensureCacheControl(body)
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}
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// Enforce Anthropic's cache_control block limit (max 4 breakpoints per request).
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body = enforceCacheControlLimit(body, 4)
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// Native selects the 1h cache pool only for OAuth credentials and pairs it with
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// extended-cache-ttl-2025-04-11, which claudeCodeCLIBetas emits on exactly the
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// same credential condition. Upgrading after placement is settled mirrors the
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// native ttl helper.
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//
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// This runs only while CPA owns placement, and it then owns the ttl of every
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// breakpoint it can reach: a marker carrying no ttl is the wire default, not an
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// opt-in to 5m, so a cloaked caller's bare {"type":"ephemeral"} is upgraded too.
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// Only a ttl the caller wrote out explicitly survives, because
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// upgradeClaudeCacheControlTTL skips any block that already has one.
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// claude-code-cli fingerprint profiles emit extended-cache-ttl and must use the same 1h pool.
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if cpaOwnsCacheControl && fp.ProfileClaudeCodeCLI {
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body = upgradeClaudeCacheControlTTL(body, claudeCacheControlTTL1h)
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}
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// Normalize TTL values to prevent ordering violations under prompt-caching-scope-2026-01-05.
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body = normalizeCacheControlTTL(body)
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// Extract betas from body and convert to header
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var extraBetas []string
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extraBetas, body = extractAndRemoveBetas(body)
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bodyForTranslation := body
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bodyForUpstream := body
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var oauthToolNamesReverseMap map[string]string
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if fp.MCPAlias && cloaked {
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mcpAliases := resolveClaudeMCPAliasOptions(ctx)
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bodyForUpstream, oauthToolNamesReverseMap = prepareClaudeOAuthToolNamesForUpstream(bodyForUpstream, mcpAliases)
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}
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bodyForUpstream = sanitizeClaudeMessagesForClaudeUpstreamWithDebug(ctx, bodyForUpstream, baseModel, helps.APIKeyModelIsCompat(req))
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if fp.ApplyCLIIdentity {
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bodyForUpstream, err = applyClaudeCLIIdentity(bodyForUpstream, auth, apiKey, url, claudeSessionID, fp.SynthesizeIdentity)
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if err != nil {
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return nil, err
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}
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}
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cchBilling := ""
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if cchSigning {
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if !claudeCodeDetection.HelperProfile || claudeBodyNeedsBillingFallback(bodyForUpstream) {
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cchBilling = claudeCCHFallbackBillingHeader(ctx, e.cfg, bodyForUpstream, claudeCodeDetection.Entrypoint)
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}
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bodyForUpstream, err = finalizeAnthropicMessagesBodyCCH(bodyForUpstream, cchBilling)
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if err != nil {
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return nil, fmt.Errorf("finalize Claude CCH: %w", err)
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}
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}
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bodyForUpstream = stripDefaultKimiClaudeCodeAttribution(auth, url, fp.ProfileClaudeCodeCLI, bodyForUpstream)
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// Runs on the finished body: payload rules can rewrite model and messages
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// long after translation, so an earlier check would not describe the request
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// that is about to be sent.
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if errMidSystem := validateClaudeMidSystemMessageModel(bodyForUpstream, confirmedClaudeCode, isAnthropicUpstreamBase(baseURL)); errMidSystem != nil {
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return nil, errMidSystem
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}
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reporter.SetTranslatedReasoningEffort(bodyForUpstream, to.String())
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httpReq, err := http.NewRequestWithContext(ctx, http.MethodPost, url, bytes.NewReader(bodyForUpstream))
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if err != nil {
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return nil, err
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}
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if errHeaders := applyClaudeHeadersWithNativeProfile(
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httpReq,
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auth,
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apiKey,
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true,
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extraBetas,
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bodyForUpstream,
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e.cfg,
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incomingHeaders,
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confirmedClaudeCode && !cloaked,
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claudeCodeDetection.HelperProfile,
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claudeSessionID,
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); errHeaders != nil {
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return nil, errHeaders
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}
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fastRequest := isAnthropicUpstreamBase(baseURL) && claudeRequestIsFast(httpReq, bodyForUpstream)
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authID, authLabel, authType, authValue := claudeAuthLogIdentity(auth)
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helps.RecordAPIRequest(ctx, e.cfg, helps.UpstreamRequestLog{
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URL: url,
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Method: http.MethodPost,
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Headers: httpReq.Header.Clone(),
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Body: bodyForUpstream,
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Provider: e.upstreamRequestLogProvider(),
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AuthID: authID,
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AuthLabel: authLabel,
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AuthType: authType,
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AuthValue: authValue,
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})
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httpClient := helps.NewUtlsHTTPClient(ctx, e.cfg, auth, 0)
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httpClient = reporter.TrackHTTPClient(httpClient)
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httpResp, err := doClaudeUpstreamRequest(httpClient, httpReq)
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if err != nil {
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helps.RecordAPIResponseError(ctx, e.cfg, err)
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return nil, wrapClaudeFastRequestError(fastRequest, 0, err)
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}
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helps.RecordAPIResponseMetadata(ctx, e.cfg, httpResp.StatusCode, httpResp.Header.Clone())
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if httpResp.StatusCode < 200 || httpResp.StatusCode >= 300 {
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// Decompress error responses — pass the Content-Encoding value (may be empty)
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// and let decodeResponseBody handle both header-declared and magic-byte-detected
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// compression. This keeps error-path behaviour consistent with the success path.
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errBody, decErr := decodeResponseBody(httpResp.Body, claudeResponseContentEncoding(httpResp.Header))
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if decErr != nil {
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helps.RecordAPIResponseError(ctx, e.cfg, decErr)
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msg := fmt.Sprintf("failed to decode error response body: %v", decErr)
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helps.LogWithRequestID(ctx).Warn(msg)
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errClassified := classifyClaudeUpstreamError(httpResp.StatusCode, httpResp.Header, []byte(msg))
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if fastRequest {
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return nil, wrapClaudeFastRequestError(fastRequest, httpResp.StatusCode, errClassified)
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}
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return nil, errClassified
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}
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b, readErr := io.ReadAll(errBody)
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if readErr != nil {
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helps.RecordAPIResponseError(ctx, e.cfg, readErr)
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msg := fmt.Sprintf("failed to read error response body: %v", readErr)
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helps.LogWithRequestID(ctx).Warn(msg)
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b = []byte(msg)
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}
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helps.AppendAPIResponseChunk(ctx, e.cfg, b)
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helps.LogWithRequestID(ctx).Debugf("request error, error status: %d, error message: %s", httpResp.StatusCode, helps.SummarizeErrorBody(httpResp.Header.Get("Content-Type"), b))
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if errClose := errBody.Close(); errClose != nil {
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log.Errorf("response body close error: %v", errClose)
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}
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if fastRequest {
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return nil, newClaudeFastDirectResponseError(httpResp, b)
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}
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return nil, classifyClaudeUpstreamError(httpResp.StatusCode, httpResp.Header, b)
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}
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decodedBody, err := decodeResponseBody(httpResp.Body, claudeResponseContentEncoding(httpResp.Header))
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if err != nil {
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helps.RecordAPIResponseError(ctx, e.cfg, err)
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if errClose := httpResp.Body.Close(); errClose != nil {
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log.Errorf("response body close error: %v", errClose)
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}
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return nil, wrapClaudeFastRequestError(fastRequest, httpResp.StatusCode, err)
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}
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out := make(chan cliproxyexecutor.StreamChunk, 1)
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go func() {
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defer close(out)
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defer func() {
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if errClose := decodedBody.Close(); errClose != nil {
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log.Errorf("response body close error: %v", errClose)
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}
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}()
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emitCancellation := func(cause error) bool {
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cancelErr := newClaudeOAuthCancellationError(ctx, fp.OAuthCancellation, cause)
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if cancelErr == nil {
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return false
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}
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helps.RecordAPIResponseError(ctx, e.cfg, cancelErr)
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reporter.PublishFailure(ctx, cancelErr)
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select {
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case out <- cliproxyexecutor.StreamChunk{Err: cancelErr}:
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default:
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}
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return true
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}
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emitResponseError := func(errResponse error) {
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errResponse = wrapClaudeFastRequestError(fastRequest, httpResp.StatusCode, errResponse)
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helps.RecordAPIResponseError(ctx, e.cfg, errResponse)
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reporter.PublishFailure(ctx, errResponse)
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select {
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case out <- cliproxyexecutor.StreamChunk{Err: errResponse}:
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case <-ctx.Done():
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}
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}
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// If the response target is Claude, directly forward complete SSE events without translation.
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if responseFormat == to {
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scanner := bufio.NewScanner(decodedBody)
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scanner.Buffer(nil, 52_428_800) // 50MB
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var event bytes.Buffer
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var upstreamMessageID string
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upstreamCompleted := false
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flushEvent := func() bool {
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if event.Len() == 0 {
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return true
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}
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cloned := bytes.Clone(event.Bytes())
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event.Reset()
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select {
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case out <- cliproxyexecutor.StreamChunk{Payload: cloned}:
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return true
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case <-ctx.Done():
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return false
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}
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}
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for scanner.Scan() {
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line := scanner.Bytes()
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observeClaudeStreamLine(line, &upstreamMessageID, &upstreamCompleted)
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helps.AppendAPIResponseChunk(ctx, e.cfg, line)
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if detail, ok := helps.ParseClaudeStreamUsage(line); ok {
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reporter.Publish(ctx, detail)
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}
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restoredLine, errRestore := restoreClaudeOAuthToolNamesFromStreamLine(line, oauthToolNamesReverseMap)
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if errRestore != nil {
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emitResponseError(fmt.Errorf("restore Claude OAuth tool name from streaming response: %w", errRestore))
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return
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}
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line = e.restoreResponseModel(restoredLine, req.Model)
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event.Write(line)
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event.WriteByte('\n')
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if len(bytes.TrimSpace(line)) == 0 && !flushEvent() {
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emitCancellation(ctx.Err())
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return
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}
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}
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if !flushEvent() {
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emitCancellation(ctx.Err())
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return
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}
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if emitCancellation(scanner.Err()) {
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return
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}
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if errScan := scanner.Err(); errScan != nil {
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errScan = wrapClaudeFastRequestError(fastRequest, httpResp.StatusCode, errScan)
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helps.RecordAPIResponseError(ctx, e.cfg, errScan)
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reporter.PublishFailure(ctx, errScan)
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select {
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case out <- cliproxyexecutor.StreamChunk{Err: errScan}:
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case <-ctx.Done():
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}
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return
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}
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if upstreamCompleted {
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commitClaudeDiagnostics(diagnosticsState, upstreamMessageID)
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}
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return
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}
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// For other formats, use translation
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scanner := bufio.NewScanner(decodedBody)
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scanner.Buffer(nil, 52_428_800) // 50MB
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var param any
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var upstreamMessageID string
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upstreamCompleted := false
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for scanner.Scan() {
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line := scanner.Bytes()
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observeClaudeStreamLine(line, &upstreamMessageID, &upstreamCompleted)
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helps.AppendAPIResponseChunk(ctx, e.cfg, line)
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if detail, ok := helps.ParseClaudeStreamUsage(line); ok {
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reporter.Publish(ctx, detail)
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}
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restoredLine, errRestore := restoreClaudeOAuthToolNamesFromStreamLine(line, oauthToolNamesReverseMap)
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if errRestore != nil {
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emitResponseError(fmt.Errorf("restore Claude OAuth tool name from streaming response: %w", errRestore))
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return
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}
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line = e.restoreResponseModel(restoredLine, req.Model)
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chunks := sdktranslator.TranslateStream(
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ctx,
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to,
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responseFormat,
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req.Model,
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opts.OriginalRequest,
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bodyForTranslation,
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bytes.Clone(line),
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¶m,
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)
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if responseFormat == sdktranslator.FormatOpenAIResponse {
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for i, chunk := range chunks {
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chunks[i] = helps.EnsureResponsesUsageDetails(chunk)
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}
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}
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for i := range chunks {
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select {
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case out <- cliproxyexecutor.StreamChunk{Payload: chunks[i]}:
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case <-ctx.Done():
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emitCancellation(ctx.Err())
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return
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}
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}
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}
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if emitCancellation(scanner.Err()) {
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return
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}
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if errScan := scanner.Err(); errScan != nil {
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errScan = wrapClaudeFastRequestError(fastRequest, httpResp.StatusCode, errScan)
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helps.RecordAPIResponseError(ctx, e.cfg, errScan)
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reporter.PublishFailure(ctx, errScan)
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select {
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case out <- cliproxyexecutor.StreamChunk{Err: errScan}:
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case <-ctx.Done():
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}
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return
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}
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if upstreamCompleted {
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commitClaudeDiagnostics(diagnosticsState, upstreamMessageID)
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}
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}()
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result := &cliproxyexecutor.StreamResult{Headers: httpResp.Header.Clone(), Chunks: out}
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if replayScope.valid() {
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result = wrapClaudeThinkingReplayStream(ctx, result, replayScope)
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}
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return result, nil
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}
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func validateClaudeStreamingResponse(data []byte) error {
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scanner := bufio.NewScanner(bytes.NewReader(data))
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scanner.Buffer(nil, 52_428_800)
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hasData := false
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hasMessageStart := false
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hasMessageDelta := false
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for scanner.Scan() {
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line := bytes.TrimSpace(scanner.Bytes())
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if len(line) == 0 || !bytes.HasPrefix(line, []byte("data:")) {
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continue
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}
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payload := bytes.TrimSpace(line[len("data:"):])
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if len(payload) == 0 || bytes.Equal(payload, []byte("[DONE]")) {
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continue
|
|
}
|
|
hasData = true
|
|
if !gjson.ValidBytes(payload) {
|
|
return statusErr{code: http.StatusBadGateway, msg: "claude executor: upstream returned malformed stream data"}
|
|
}
|
|
|
|
root := gjson.ParseBytes(payload)
|
|
switch root.Get("type").String() {
|
|
case "error":
|
|
message := strings.TrimSpace(root.Get("error.message").String())
|
|
if message == "" {
|
|
message = strings.TrimSpace(root.Get("error.type").String())
|
|
}
|
|
if message == "" {
|
|
message = "unknown upstream error"
|
|
}
|
|
return statusErr{code: http.StatusBadGateway, msg: "claude executor: upstream returned error event: " + message}
|
|
case "message_start":
|
|
message := root.Get("message")
|
|
if strings.TrimSpace(message.Get("id").String()) == "" || strings.TrimSpace(message.Get("model").String()) == "" {
|
|
return statusErr{code: http.StatusBadGateway, msg: "claude executor: upstream stream message_start is missing id or model"}
|
|
}
|
|
hasMessageStart = true
|
|
case "message_delta":
|
|
hasMessageDelta = true
|
|
}
|
|
}
|
|
if errScan := scanner.Err(); errScan != nil {
|
|
return errScan
|
|
}
|
|
if !hasData {
|
|
return statusErr{code: http.StatusBadGateway, msg: "claude executor: upstream returned empty stream response"}
|
|
}
|
|
if !hasMessageStart {
|
|
return statusErr{code: http.StatusBadGateway, msg: "claude executor: upstream stream response is missing message_start"}
|
|
}
|
|
if !hasMessageDelta {
|
|
return statusErr{code: http.StatusBadGateway, msg: "claude executor: upstream stream response ended before message completion"}
|
|
}
|
|
return nil
|
|
}
|