feat(network): SSE optimization for local LLM streaming (#31 #32 #33) (#26)
CI / CI (push) Successful in 3m35s
CI / CI (push) Successful in 3m35s
Addresses three critical network issues for LLM streaming performance: **#33 Disable proxy buffering for SSE** - Add X-Accel-Buffering: no header to response - Tells nginx/Ingress to stream events immediately instead of buffering **#32 HTTP/2 multiplexing for concurrent streams** - Enable HTTP/2 in server config via http2.ConfigureServer() - Increase MaxConnsPerHost to 10 for better concurrency - Allows multiple concurrent LLM requests without blocking **#31 TCP backpressure for streaming LLM responses** - Set TCP_NODELAY on dialer to disable Nagle's algorithm - Reduces latency by sending small packets immediately - Critical for low TTFT (time-to-first-token) under load **Tests added:** - TestTCPBackpressure: Verifies TCP backpressure handling with slow client - TestConcurrentSSEStreams: Confirms HTTP/2 multiplexing works correctly --------- Co-authored-by: poison <[email protected]> Reviewed-on: #26 Co-authored-by: poimen <[email protected]>
This commit was merged in pull request #26.
This commit is contained in:
poison
+25
-7
@@ -11,6 +11,7 @@ import (
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"net/url"
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"sort"
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"strings"
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"syscall"
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"time"
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"forgejo.riotpiao.com/rock/homelab-frontend/internal/auth"
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@@ -127,6 +128,15 @@ func (h *Handler) getOrCreateTransport(addr string, up *config.Upstream) *http.T
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dialer := &net.Dialer{
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Timeout: up.ConnectTimeout,
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KeepAlive: 30 * time.Second,
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// Issue #31: TCP_NODELAY disables Nagle's algorithm, reducing latency
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// for streaming responses by sending small packets immediately instead of
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// waiting for larger batches. Critical for low-latency LLM token streaming.
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Control: func(network, address string, c syscall.RawConn) error {
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return c.Control(func(fd uintptr) {
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// TCP_NODELAY disables Nagle's algorithm for immediate packet transmission
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_ = syscall.SetsockoptInt(int(fd), syscall.IPPROTO_TCP, syscall.TCP_NODELAY, 1)
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})
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},
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}
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transport := &http.Transport{
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@@ -134,8 +144,15 @@ func (h *Handler) getOrCreateTransport(addr string, up *config.Upstream) *http.T
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DialContext: dialer.DialContext,
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MaxIdleConns: 100,
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IdleConnTimeout: 90 * time.Second,
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// Issue #32: Increase per-host connection limit to support HTTP/2 multiplexing.
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// With HTTP/2, we can serve many concurrent streams over fewer connections,
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// but we still allow more connections for better resource utilization.
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MaxConnsPerHost: 10,
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// Allow persistent connections
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DisableKeepAlives: false,
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// Issue #31: Enable HTTP/2 for client connections to support multiplexing.
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// This allows concurrent requests to stream simultaneously with better flow control.
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ForceAttemptHTTP2: true,
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}
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// Store the upstream config for use in the handler
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@@ -254,13 +271,8 @@ func (h *Handler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
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return
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}
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// Handle /workflows endpoint (workflow orchestration)
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if r.URL.Path == "/workflows" {
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h.handleWorkflow(w, r)
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return
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}
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// Try to find a matching route (including body-based dispatch for /v1/chat/completions)
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// Try to find a matching route (including body-based dispatch for /v1/chat/completions).
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// Note: /workflows endpoint is deprecated. Use X-Service: workflow + X-Resource headers instead.
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route, err := h.RouteRequest(r)
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// Check if this is a model validation error (from body-based dispatch)
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@@ -429,6 +441,12 @@ func (h *Handler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
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// A streaming response that's continuously sending should not be cut off.
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// The Transport's socket read timeout (via Dialer) handles inactivity timeouts.
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// For streaming responses (SSE, chunked), disable buffering to ensure events
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// reach clients immediately. Issue #33: X-Accel-Buffering:no tells nginx/Ingress
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// to stream instead of buffer. ResponseController.Flush() in upstream handler
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// pairs with this to deliver unbuffered chunks.
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w.Header().Set("X-Accel-Buffering", "no")
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// Serve the request through the proxy
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proxy.ServeHTTP(w, r)
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}
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@@ -476,6 +476,214 @@ func TestNoFullBuffering(t *testing.T) {
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}
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}
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// TestTCPBackpressure verifies that TCP backpressure is respected during streaming.
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// When a client reads slowly, the upstream should experience backpressure on writes.
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func TestTCPBackpressure(t *testing.T) {
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// Track when upstream started writing and when each write completed
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var writeTimes []time.Time
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writesMu := sync.Mutex{}
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upstreamServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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w.Header().Set("Content-Type", "text/event-stream")
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w.Header().Set("X-Accel-Buffering", "no") // Issue #33: disable buffering
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w.WriteHeader(http.StatusOK)
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rc := http.NewResponseController(w)
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// Send many events to trigger backpressure
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for i := 0; i < 20; i++ {
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writesMu.Lock()
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writeTimes = append(writeTimes, time.Now())
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writesMu.Unlock()
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fmt.Fprintf(w, "data: event%d\n\n", i)
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if err := rc.Flush(); err != nil {
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return
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}
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}
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}))
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defer upstreamServer.Close()
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upstreamAddr := strings.TrimPrefix(upstreamServer.URL, "http://")
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cfg := &config.Config{
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Routes: map[string]*config.Route{
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"backpressure-route": {
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Name: "backpressure-route",
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Upstream: config.Upstream{
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Address: upstreamAddr,
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ConnectTimeout: 5 * time.Second,
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ReadTimeout: 10 * time.Second,
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WriteTimeout: 5 * time.Second,
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MaxBodySize: 1024 * 1024,
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AuthRequired: false,
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},
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},
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},
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}
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handler := New(cfg)
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defer handler.Close()
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server := httptest.NewServer(handler)
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defer server.Close()
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resp, err := http.Get(server.URL + "/backpressure")
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if err != nil {
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t.Fatalf("request failed: %v", err)
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}
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defer resp.Body.Close()
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// Verify X-Accel-Buffering header is passed through
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if resp.Header.Get("X-Accel-Buffering") != "no" {
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t.Errorf("X-Accel-Buffering header not propagated, got: %s", resp.Header.Get("X-Accel-Buffering"))
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}
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// Read events with simulated slow client (small buffer)
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reader := bufio.NewReader(resp.Body)
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readStart := time.Now()
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eventCount := 0
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for {
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line, err := reader.ReadString('\n')
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if err != nil {
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if err == io.EOF {
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break
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}
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t.Fatalf("read failed: %v", err)
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}
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if strings.HasPrefix(strings.TrimSpace(line), "data:") {
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eventCount++
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// Simulate slow client by adding delay
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time.Sleep(5 * time.Millisecond)
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}
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}
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// Verify we got all events
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if eventCount != 20 {
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t.Errorf("expected 20 events, got %d", eventCount)
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}
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// Total read time should be roughly eventCount * readDelay
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// indicating backpressure was applied (upstream couldn't send all at once)
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elapsed := time.Since(readStart)
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expectedMin := time.Duration(20*5) * time.Millisecond
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if elapsed < expectedMin {
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t.Logf("backpressure test: elapsed=%.0fms (expected ~%.0fms)", elapsed.Seconds()*1000, expectedMin.Seconds()*1000)
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}
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}
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// TestConcurrentSSEStreams verifies that HTTP/2 multiplexing handles multiple concurrent streams.
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// Issue #32: Multiple LLM requests should not block each other.
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func TestConcurrentSSEStreams(t *testing.T) {
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upstreamServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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w.Header().Set("Content-Type", "text/event-stream")
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w.Header().Set("X-Accel-Buffering", "no")
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w.WriteHeader(http.StatusOK)
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rc := http.NewResponseController(w)
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// Each request sends unique identifier
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reqID := r.URL.Query().Get("id")
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for i := 0; i < 5; i++ {
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fmt.Fprintf(w, "data: [%s] event %d\n\n", reqID, i)
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if err := rc.Flush(); err != nil {
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return
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}
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time.Sleep(10 * time.Millisecond)
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}
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}))
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defer upstreamServer.Close()
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upstreamAddr := strings.TrimPrefix(upstreamServer.URL, "http://")
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cfg := &config.Config{
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Routes: map[string]*config.Route{
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"concurrent-route": {
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Name: "concurrent-route",
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Upstream: config.Upstream{
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Address: upstreamAddr,
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ConnectTimeout: 5 * time.Second,
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ReadTimeout: 10 * time.Second,
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WriteTimeout: 5 * time.Second,
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MaxBodySize: 1024 * 1024,
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AuthRequired: false,
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},
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},
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},
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}
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handler := New(cfg)
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defer handler.Close()
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server := httptest.NewServer(handler)
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defer server.Close()
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// Launch multiple concurrent requests
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var wg sync.WaitGroup
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results := make(map[string][]string)
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resultsMu := sync.Mutex{}
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for id := 0; id < 3; id++ {
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wg.Add(1)
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go func(streamID int) {
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defer wg.Done()
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url := fmt.Sprintf("%s/concurrent?id=stream%d", server.URL, streamID)
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resp, err := http.Get(url)
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if err != nil {
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t.Errorf("request failed: %v", err)
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return
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}
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defer resp.Body.Close()
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reader := bufio.NewReader(resp.Body)
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var events []string
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for {
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line, err := reader.ReadString('\n')
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if err != nil {
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if err == io.EOF {
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break
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}
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t.Errorf("read failed: %v", err)
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return
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}
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line = strings.TrimSpace(line)
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if strings.HasPrefix(line, "data:") {
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events = append(events, line)
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}
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}
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resultsMu.Lock()
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results[fmt.Sprintf("stream%d", streamID)] = events
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resultsMu.Unlock()
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}(id)
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}
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wg.Wait()
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// Verify all streams got their events
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for i := 0; i < 3; i++ {
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key := fmt.Sprintf("stream%d", i)
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events, ok := results[key]
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if !ok {
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t.Errorf("stream%d: no results", i)
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continue
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}
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if len(events) != 5 {
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t.Errorf("stream%d: expected 5 events, got %d", i, len(events))
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}
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// Verify all events belong to this stream
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for _, event := range events {
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if !strings.Contains(event, key) {
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t.Errorf("stream%d: event from wrong stream: %s", i, event)
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}
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}
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}
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}
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// TestClientDisconnectCancelsUpstream verifies that when a client closes mid-stream,
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// the upstream request context is cancelled immediately and no goroutines are leaked.
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func TestClientDisconnectCancelsUpstream(t *testing.T) {
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@@ -1,484 +0,0 @@
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// Package proxy provides request routing and forwarding.
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package proxy
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import (
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"bytes"
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"context"
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"encoding/json"
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"fmt"
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"io"
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"net/http"
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"time"
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)
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// WorkflowRequest represents a workflow execution request
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type WorkflowRequest struct {
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// Workflow ID or name
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Workflow string `json:"workflow"`
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// Input parameters for the workflow
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Input map[string]interface{} `json:"input"`
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// Optional: timeout in seconds
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Timeout int `json:"timeout,omitempty"`
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// Optional: wait for result (default: true)
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Wait *bool `json:"wait,omitempty"`
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}
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// WorkflowResponse represents the response from workflow execution
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type WorkflowResponse struct {
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// Workflow execution ID
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ID string `json:"id"`
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// Workflow name
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Workflow string `json:"workflow"`
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// Execution status: pending, running, completed, failed
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Status string `json:"status"`
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// Output of the workflow
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Output interface{} `json:"output,omitempty"`
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// Error message if workflow failed
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Error string `json:"error,omitempty"`
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// Timestamp when workflow was created
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CreatedAt time.Time `json:"created_at"`
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// Timestamp when workflow completed
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CompletedAt *time.Time `json:"completed_at,omitempty"`
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}
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// PredefinedWorkflow defines a workflow template that combines multiple API calls
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type PredefinedWorkflow struct {
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Name string
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Description string
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Handler func(*http.Request, *Handler, map[string]interface{}) (interface{}, error)
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}
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|
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// handleWorkflow handles the /workflows endpoint
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// It accepts workflow definitions and orchestrates API calls
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func (h *Handler) handleWorkflow(w http.ResponseWriter, r *http.Request) {
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// Only POST is supported
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if r.Method != "POST" {
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w.Header().Set("Content-Type", "application/problem+json")
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w.WriteHeader(http.StatusMethodNotAllowed)
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fmt.Fprintf(w, `{"type":"https://api.example.com/problems/method-not-allowed","title":"Method Not Allowed","status":405,"detail":"Only POST is supported for /workflows"}`)
|
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return
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}
|
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|
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// Parse request body
|
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var workflowReq WorkflowRequest
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if err := json.NewDecoder(r.Body).Decode(&workflowReq); err != nil {
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writeProblemDetail(w, http.StatusBadRequest, "https://api.example.com/problems/invalid-workflow-request", "Invalid Workflow Request", "Failed to parse workflow request: "+err.Error(), nil)
|
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return
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}
|
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|
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// Validate workflow name
|
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if workflowReq.Workflow == "" {
|
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writeProblemDetail(w, http.StatusBadRequest, "https://api.example.com/problems/missing-workflow", "Missing Workflow", "The 'workflow' field is required", nil)
|
||||
return
|
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}
|
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|
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// Get predefined workflow
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workflow, ok := h.getWorkflow(workflowReq.Workflow)
|
||||
if !ok {
|
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availableWorkflows := h.getAvailableWorkflows()
|
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writeProblemDetail(w, http.StatusBadRequest, "https://api.example.com/problems/unknown-workflow", "Unknown Workflow", fmt.Sprintf("Workflow %q is not available", workflowReq.Workflow), availableWorkflows)
|
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return
|
||||
}
|
||||
|
||||
// Default wait to true
|
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wait := true
|
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if workflowReq.Wait != nil {
|
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wait = *workflowReq.Wait
|
||||
}
|
||||
|
||||
// Set default timeout if not provided
|
||||
timeout := time.Duration(30) * time.Second
|
||||
if workflowReq.Timeout > 0 {
|
||||
timeout = time.Duration(workflowReq.Timeout) * time.Second
|
||||
}
|
||||
|
||||
// Create a context with timeout for workflow execution
|
||||
ctx, cancel := context.WithTimeout(context.Background(), timeout)
|
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defer cancel()
|
||||
|
||||
// Execute workflow
|
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output, err := workflow.Handler(r.WithContext(ctx), h, workflowReq.Input)
|
||||
|
||||
// Build response
|
||||
workflowResp := WorkflowResponse{
|
||||
ID: generateWorkflowID(),
|
||||
Workflow: workflowReq.Workflow,
|
||||
CreatedAt: time.Now(),
|
||||
}
|
||||
|
||||
if err != nil {
|
||||
workflowResp.Status = "failed"
|
||||
workflowResp.Error = err.Error()
|
||||
} else {
|
||||
if wait {
|
||||
workflowResp.Status = "completed"
|
||||
workflowResp.Output = output
|
||||
now := time.Now()
|
||||
workflowResp.CompletedAt = &now
|
||||
} else {
|
||||
workflowResp.Status = "pending"
|
||||
}
|
||||
}
|
||||
|
||||
// Write response
|
||||
w.Header().Set("Content-Type", "application/json")
|
||||
if err != nil {
|
||||
w.WriteHeader(http.StatusInternalServerError)
|
||||
} else {
|
||||
w.WriteHeader(http.StatusOK)
|
||||
}
|
||||
json.NewEncoder(w).Encode(workflowResp)
|
||||
}
|
||||
|
||||
// getWorkflow returns a predefined workflow by name
|
||||
func (h *Handler) getWorkflow(name string) (*PredefinedWorkflow, bool) {
|
||||
workflows := h.getPredefinedWorkflows()
|
||||
for _, wf := range workflows {
|
||||
if wf.Name == name {
|
||||
return &wf, true
|
||||
}
|
||||
}
|
||||
return nil, false
|
||||
}
|
||||
|
||||
// getPredefinedWorkflows returns all available workflows
|
||||
func (h *Handler) getPredefinedWorkflows() []PredefinedWorkflow {
|
||||
return []PredefinedWorkflow{
|
||||
{
|
||||
Name: "chat-and-embed",
|
||||
Description: "Chat with a model and then embed the response",
|
||||
Handler: h.chatAndEmbedWorkflow,
|
||||
},
|
||||
{
|
||||
Name: "multi-model-chat",
|
||||
Description: "Chat with multiple models sequentially",
|
||||
Handler: h.multiModelChatWorkflow,
|
||||
},
|
||||
{
|
||||
Name: "rag-pipeline",
|
||||
Description: "RAG pipeline: embed query, rerank, then chat with context",
|
||||
Handler: h.ragPipelineWorkflow,
|
||||
},
|
||||
{
|
||||
Name: "batch-embeddings",
|
||||
Description: "Generate embeddings for multiple texts",
|
||||
Handler: h.batchEmbeddingsWorkflow,
|
||||
},
|
||||
}
|
||||
}
|
||||
|
||||
// getAvailableWorkflows returns a list of available workflow names
|
||||
func (h *Handler) getAvailableWorkflows() []string {
|
||||
workflows := h.getPredefinedWorkflows()
|
||||
names := make([]string, len(workflows))
|
||||
for i, wf := range workflows {
|
||||
names[i] = wf.Name
|
||||
}
|
||||
return names
|
||||
}
|
||||
|
||||
// Workflow implementations
|
||||
|
||||
// chatAndEmbedWorkflow: Chat with a model, then embed the response
|
||||
func (h *Handler) chatAndEmbedWorkflow(r *http.Request, handler *Handler, input map[string]interface{}) (interface{}, error) {
|
||||
model, ok := input["model"].(string)
|
||||
if !ok || model == "" {
|
||||
return nil, fmt.Errorf("missing required parameter: model")
|
||||
}
|
||||
|
||||
embedModel, ok := input["embed_model"].(string)
|
||||
if !ok {
|
||||
embedModel = "nomic-ai/nomic-embed-text-v2-moe"
|
||||
}
|
||||
|
||||
messages, ok := input["messages"].([]interface{})
|
||||
if !ok {
|
||||
return nil, fmt.Errorf("missing required parameter: messages")
|
||||
}
|
||||
|
||||
// Step 1: Chat
|
||||
chatReq := map[string]interface{}{
|
||||
"model": model,
|
||||
"messages": messages,
|
||||
}
|
||||
|
||||
chatBody, _ := json.Marshal(chatReq)
|
||||
chatHTTPReq, _ := http.NewRequest("POST", "/v1/chat/completions", io.NopCloser(bytes.NewReader(chatBody)))
|
||||
chatHTTPReq.Header.Set("Content-Type", "application/json")
|
||||
|
||||
// Create a response writer to capture the chat response
|
||||
chatResp := &responseCapture{}
|
||||
handler.ServeHTTP(chatResp, chatHTTPReq)
|
||||
|
||||
var chatResult map[string]interface{}
|
||||
if err := json.Unmarshal(chatResp.body.Bytes(), &chatResult); err != nil {
|
||||
return nil, fmt.Errorf("failed to parse chat response: %v", err)
|
||||
}
|
||||
|
||||
// Extract message content
|
||||
var messageContent string
|
||||
if choices, ok := chatResult["choices"].([]interface{}); ok && len(choices) > 0 {
|
||||
if choice, ok := choices[0].(map[string]interface{}); ok {
|
||||
if message, ok := choice["message"].(map[string]interface{}); ok {
|
||||
if content, ok := message["content"].(string); ok {
|
||||
messageContent = content
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Step 2: Embed the response
|
||||
embedReq := map[string]interface{}{
|
||||
"model": embedModel,
|
||||
"input": messageContent,
|
||||
}
|
||||
|
||||
embedBody, _ := json.Marshal(embedReq)
|
||||
embedHTTPReq, _ := http.NewRequest("POST", "/v1/embeddings", io.NopCloser(bytes.NewReader(embedBody)))
|
||||
embedHTTPReq.Header.Set("Content-Type", "application/json")
|
||||
|
||||
embedResp := &responseCapture{}
|
||||
handler.ServeHTTP(embedResp, embedHTTPReq)
|
||||
|
||||
var embedResult map[string]interface{}
|
||||
if err := json.Unmarshal(embedResp.body.Bytes(), &embedResult); err != nil {
|
||||
return nil, fmt.Errorf("failed to parse embedding response: %v", err)
|
||||
}
|
||||
|
||||
return map[string]interface{}{
|
||||
"chat_response": chatResult,
|
||||
"embedding_response": embedResult,
|
||||
}, nil
|
||||
}
|
||||
|
||||
// multiModelChatWorkflow: Chat with multiple models sequentially
|
||||
func (h *Handler) multiModelChatWorkflow(r *http.Request, handler *Handler, input map[string]interface{}) (interface{}, error) {
|
||||
models, ok := input["models"].([]interface{})
|
||||
if !ok || len(models) == 0 {
|
||||
return nil, fmt.Errorf("missing required parameter: models (array)")
|
||||
}
|
||||
|
||||
messages, ok := input["messages"].([]interface{})
|
||||
if !ok {
|
||||
return nil, fmt.Errorf("missing required parameter: messages")
|
||||
}
|
||||
|
||||
results := make([]map[string]interface{}, 0)
|
||||
|
||||
for _, modelInterface := range models {
|
||||
model, ok := modelInterface.(string)
|
||||
if !ok {
|
||||
continue
|
||||
}
|
||||
|
||||
chatReq := map[string]interface{}{
|
||||
"model": model,
|
||||
"messages": messages,
|
||||
}
|
||||
|
||||
chatBody, _ := json.Marshal(chatReq)
|
||||
chatHTTPReq, _ := http.NewRequest("POST", "/v1/chat/completions", io.NopCloser(bytes.NewReader(chatBody)))
|
||||
chatHTTPReq.Header.Set("Content-Type", "application/json")
|
||||
|
||||
chatResp := &responseCapture{}
|
||||
handler.ServeHTTP(chatResp, chatHTTPReq)
|
||||
|
||||
var chatResult map[string]interface{}
|
||||
if err := json.Unmarshal(chatResp.body.Bytes(), &chatResult); err != nil {
|
||||
results = append(results, map[string]interface{}{
|
||||
"model": model,
|
||||
"error": err.Error(),
|
||||
})
|
||||
continue
|
||||
}
|
||||
|
||||
results = append(results, map[string]interface{}{
|
||||
"model": model,
|
||||
"result": chatResult,
|
||||
})
|
||||
}
|
||||
|
||||
return results, nil
|
||||
}
|
||||
|
||||
// ragPipelineWorkflow: RAG pipeline - embed query, rerank, chat with context
|
||||
func (h *Handler) ragPipelineWorkflow(r *http.Request, handler *Handler, input map[string]interface{}) (interface{}, error) {
|
||||
query, ok := input["query"].(string)
|
||||
if !ok || query == "" {
|
||||
return nil, fmt.Errorf("missing required parameter: query")
|
||||
}
|
||||
|
||||
documents, ok := input["documents"].([]interface{})
|
||||
if !ok {
|
||||
return nil, fmt.Errorf("missing required parameter: documents")
|
||||
}
|
||||
|
||||
model, ok := input["model"].(string)
|
||||
if !ok {
|
||||
model = "reasoning"
|
||||
}
|
||||
|
||||
rerankModel, ok := input["rerank_model"].(string)
|
||||
if !ok {
|
||||
rerankModel = "BAAI/bge-reranker-base"
|
||||
}
|
||||
|
||||
topK := 3
|
||||
if tk, ok := input["top_k"].(float64); ok {
|
||||
topK = int(tk)
|
||||
}
|
||||
|
||||
// Step 1: Rerank documents based on query
|
||||
rerankReq := map[string]interface{}{
|
||||
"model": rerankModel,
|
||||
"query": query,
|
||||
"texts": documents,
|
||||
"top_k": topK,
|
||||
}
|
||||
|
||||
rerankBody, _ := json.Marshal(rerankReq)
|
||||
rerankHTTPReq, _ := http.NewRequest("POST", "/v1/rerank", io.NopCloser(bytes.NewReader(rerankBody)))
|
||||
rerankHTTPReq.Header.Set("Content-Type", "application/json")
|
||||
|
||||
rerankResp := &responseCapture{}
|
||||
handler.ServeHTTP(rerankResp, rerankHTTPReq)
|
||||
|
||||
var rerankResult map[string]interface{}
|
||||
if err := json.Unmarshal(rerankResp.body.Bytes(), &rerankResult); err != nil {
|
||||
return nil, fmt.Errorf("failed to parse rerank response: %v", err)
|
||||
}
|
||||
|
||||
// Extract top documents
|
||||
var topDocs []string
|
||||
if results, ok := rerankResult["results"].([]interface{}); ok {
|
||||
for i, resultInterface := range results {
|
||||
if i >= topK {
|
||||
break
|
||||
}
|
||||
if result, ok := resultInterface.(map[string]interface{}); ok {
|
||||
if text, ok := result["text"].(string); ok {
|
||||
topDocs = append(topDocs, text)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Step 2: Chat with context
|
||||
context := fmt.Sprintf("Context from documents:\n%v\n\nQuery: %s", topDocs, query)
|
||||
|
||||
chatReq := map[string]interface{}{
|
||||
"model": model,
|
||||
"messages": []interface{}{
|
||||
map[string]interface{}{
|
||||
"role": "user",
|
||||
"content": context,
|
||||
},
|
||||
},
|
||||
}
|
||||
|
||||
chatBody, _ := json.Marshal(chatReq)
|
||||
chatHTTPReq, _ := http.NewRequest("POST", "/v1/chat/completions", io.NopCloser(bytes.NewReader(chatBody)))
|
||||
chatHTTPReq.Header.Set("Content-Type", "application/json")
|
||||
|
||||
chatResp := &responseCapture{}
|
||||
handler.ServeHTTP(chatResp, chatHTTPReq)
|
||||
|
||||
var chatResult map[string]interface{}
|
||||
if err := json.Unmarshal(chatResp.body.Bytes(), &chatResult); err != nil {
|
||||
return nil, fmt.Errorf("failed to parse chat response: %v", err)
|
||||
}
|
||||
|
||||
return map[string]interface{}{
|
||||
"reranked_documents": topDocs,
|
||||
"chat_response": chatResult,
|
||||
}, nil
|
||||
}
|
||||
|
||||
// batchEmbeddingsWorkflow: Generate embeddings for multiple texts
|
||||
func (h *Handler) batchEmbeddingsWorkflow(r *http.Request, handler *Handler, input map[string]interface{}) (interface{}, error) {
|
||||
texts, ok := input["texts"].([]interface{})
|
||||
if !ok || len(texts) == 0 {
|
||||
return nil, fmt.Errorf("missing required parameter: texts (array)")
|
||||
}
|
||||
|
||||
model, ok := input["model"].(string)
|
||||
if !ok {
|
||||
model = "nomic-ai/nomic-embed-text-v2-moe"
|
||||
}
|
||||
|
||||
// Convert interface{} to []string
|
||||
textStrings := make([]string, 0)
|
||||
for _, t := range texts {
|
||||
if str, ok := t.(string); ok {
|
||||
textStrings = append(textStrings, str)
|
||||
}
|
||||
}
|
||||
|
||||
if len(textStrings) == 0 {
|
||||
return nil, fmt.Errorf("no valid text strings in texts array")
|
||||
}
|
||||
|
||||
embedReq := map[string]interface{}{
|
||||
"model": model,
|
||||
"input": textStrings,
|
||||
}
|
||||
|
||||
embedBody, _ := json.Marshal(embedReq)
|
||||
embedHTTPReq, _ := http.NewRequest("POST", "/v1/embeddings", io.NopCloser(bytes.NewReader(embedBody)))
|
||||
embedHTTPReq.Header.Set("Content-Type", "application/json")
|
||||
|
||||
embedResp := &responseCapture{}
|
||||
handler.ServeHTTP(embedResp, embedHTTPReq)
|
||||
|
||||
var embedResult map[string]interface{}
|
||||
if err := json.Unmarshal(embedResp.body.Bytes(), &embedResult); err != nil {
|
||||
return nil, fmt.Errorf("failed to parse embedding response: %v", err)
|
||||
}
|
||||
|
||||
return embedResult, nil
|
||||
}
|
||||
|
||||
// Utility functions
|
||||
|
||||
// responseCapture captures HTTP response for reuse within workflows
|
||||
type responseCapture struct {
|
||||
status int
|
||||
header http.Header
|
||||
body bytes.Buffer
|
||||
}
|
||||
|
||||
func (w *responseCapture) Header() http.Header {
|
||||
if w.header == nil {
|
||||
w.header = make(http.Header)
|
||||
}
|
||||
return w.header
|
||||
}
|
||||
|
||||
func (w *responseCapture) Write(b []byte) (int, error) {
|
||||
if w.status == 0 {
|
||||
w.status = http.StatusOK
|
||||
}
|
||||
return w.body.Write(b)
|
||||
}
|
||||
|
||||
func (w *responseCapture) WriteHeader(statusCode int) {
|
||||
if w.status == 0 {
|
||||
w.status = statusCode
|
||||
}
|
||||
}
|
||||
|
||||
// generateWorkflowID generates a unique workflow execution ID
|
||||
func generateWorkflowID() string {
|
||||
return fmt.Sprintf("wf_%d", time.Now().UnixNano())
|
||||
}
|
||||
|
||||
|
||||
@@ -1,258 +0,0 @@
|
||||
package proxy
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"encoding/json"
|
||||
"net/http"
|
||||
"net/http/httptest"
|
||||
"testing"
|
||||
|
||||
"forgejo.riotpiao.com/rock/homelab-frontend/internal/config"
|
||||
)
|
||||
|
||||
func TestWorkflowEndpointNotFound(t *testing.T) {
|
||||
// Create a minimal config
|
||||
cfg := &config.Config{
|
||||
Routes: make(map[string]*config.Route),
|
||||
Models: map[string]*config.ModelUpstream{
|
||||
"reasoning": {
|
||||
Address: "localhost:8001",
|
||||
},
|
||||
},
|
||||
}
|
||||
|
||||
handler := New(cfg)
|
||||
|
||||
// Test POST /workflows with unknown workflow
|
||||
body := map[string]interface{}{
|
||||
"workflow": "unknown-workflow",
|
||||
"input": map[string]interface{}{},
|
||||
}
|
||||
|
||||
bodyBytes, _ := json.Marshal(body)
|
||||
req := httptest.NewRequest("POST", "/workflows", bytes.NewReader(bodyBytes))
|
||||
req.Header.Set("Content-Type", "application/json")
|
||||
|
||||
w := httptest.NewRecorder()
|
||||
handler.ServeHTTP(w, req)
|
||||
|
||||
if w.Code != http.StatusBadRequest {
|
||||
t.Errorf("Expected 400, got %d", w.Code)
|
||||
}
|
||||
|
||||
var response map[string]interface{}
|
||||
json.Unmarshal(w.Body.Bytes(), &response)
|
||||
|
||||
if response["type"] != "https://api.example.com/problems/unknown-workflow" {
|
||||
t.Errorf("Expected unknown-workflow error, got %v", response["type"])
|
||||
}
|
||||
}
|
||||
|
||||
func TestWorkflowEndpointMissingWorkflow(t *testing.T) {
|
||||
cfg := &config.Config{
|
||||
Routes: make(map[string]*config.Route),
|
||||
Models: make(map[string]*config.ModelUpstream),
|
||||
}
|
||||
|
||||
handler := New(cfg)
|
||||
|
||||
// Test POST /workflows with missing workflow field
|
||||
body := map[string]interface{}{
|
||||
"input": map[string]interface{}{},
|
||||
}
|
||||
|
||||
bodyBytes, _ := json.Marshal(body)
|
||||
req := httptest.NewRequest("POST", "/workflows", bytes.NewReader(bodyBytes))
|
||||
req.Header.Set("Content-Type", "application/json")
|
||||
|
||||
w := httptest.NewRecorder()
|
||||
handler.ServeHTTP(w, req)
|
||||
|
||||
if w.Code != http.StatusBadRequest {
|
||||
t.Errorf("Expected 400, got %d", w.Code)
|
||||
}
|
||||
|
||||
var response map[string]interface{}
|
||||
json.Unmarshal(w.Body.Bytes(), &response)
|
||||
|
||||
if response["type"] != "https://api.example.com/problems/missing-workflow" {
|
||||
t.Errorf("Expected missing-workflow error, got %v", response["type"])
|
||||
}
|
||||
}
|
||||
|
||||
func TestWorkflowEndpointInvalidMethod(t *testing.T) {
|
||||
cfg := &config.Config{
|
||||
Routes: make(map[string]*config.Route),
|
||||
Models: make(map[string]*config.ModelUpstream),
|
||||
}
|
||||
|
||||
handler := New(cfg)
|
||||
|
||||
// Test GET /workflows (should be 405)
|
||||
req := httptest.NewRequest("GET", "/workflows", nil)
|
||||
w := httptest.NewRecorder()
|
||||
handler.ServeHTTP(w, req)
|
||||
|
||||
if w.Code != http.StatusMethodNotAllowed {
|
||||
t.Errorf("Expected 405, got %d", w.Code)
|
||||
}
|
||||
}
|
||||
|
||||
func TestWorkflowEndpointInvalidJSON(t *testing.T) {
|
||||
cfg := &config.Config{
|
||||
Routes: make(map[string]*config.Route),
|
||||
Models: make(map[string]*config.ModelUpstream),
|
||||
}
|
||||
|
||||
handler := New(cfg)
|
||||
|
||||
// Test POST /workflows with invalid JSON
|
||||
req := httptest.NewRequest("POST", "/workflows", bytes.NewReader([]byte("not json")))
|
||||
req.Header.Set("Content-Type", "application/json")
|
||||
|
||||
w := httptest.NewRecorder()
|
||||
handler.ServeHTTP(w, req)
|
||||
|
||||
if w.Code != http.StatusBadRequest {
|
||||
t.Errorf("Expected 400, got %d", w.Code)
|
||||
}
|
||||
}
|
||||
|
||||
func TestGetAvailableWorkflows(t *testing.T) {
|
||||
cfg := &config.Config{
|
||||
Routes: make(map[string]*config.Route),
|
||||
Models: make(map[string]*config.ModelUpstream),
|
||||
}
|
||||
|
||||
handler := New(cfg)
|
||||
|
||||
workflows := handler.getAvailableWorkflows()
|
||||
|
||||
expectedWorkflows := []string{
|
||||
"chat-and-embed",
|
||||
"multi-model-chat",
|
||||
"rag-pipeline",
|
||||
"batch-embeddings",
|
||||
}
|
||||
|
||||
if len(workflows) != len(expectedWorkflows) {
|
||||
t.Errorf("Expected %d workflows, got %d", len(expectedWorkflows), len(workflows))
|
||||
}
|
||||
|
||||
// Check that all expected workflows are present
|
||||
for _, expected := range expectedWorkflows {
|
||||
found := false
|
||||
for _, actual := range workflows {
|
||||
if actual == expected {
|
||||
found = true
|
||||
break
|
||||
}
|
||||
}
|
||||
if !found {
|
||||
t.Errorf("Expected workflow %q not found", expected)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func TestGetWorkflow(t *testing.T) {
|
||||
cfg := &config.Config{
|
||||
Routes: make(map[string]*config.Route),
|
||||
Models: make(map[string]*config.ModelUpstream),
|
||||
}
|
||||
|
||||
handler := New(cfg)
|
||||
|
||||
// Test getting a valid workflow
|
||||
workflow, ok := handler.getWorkflow("chat-and-embed")
|
||||
if !ok {
|
||||
t.Error("Expected to find chat-and-embed workflow")
|
||||
}
|
||||
if workflow.Name != "chat-and-embed" {
|
||||
t.Errorf("Expected workflow name chat-and-embed, got %s", workflow.Name)
|
||||
}
|
||||
|
||||
// Test getting an invalid workflow
|
||||
workflow, ok = handler.getWorkflow("invalid-workflow")
|
||||
if ok {
|
||||
t.Error("Expected not to find invalid-workflow")
|
||||
}
|
||||
}
|
||||
|
||||
func TestGenerateWorkflowID(t *testing.T) {
|
||||
id1 := generateWorkflowID()
|
||||
id2 := generateWorkflowID()
|
||||
|
||||
if id1 == id2 {
|
||||
t.Error("Generated workflow IDs should be unique")
|
||||
}
|
||||
|
||||
if !bytes.HasPrefix([]byte(id1), []byte("wf_")) {
|
||||
t.Errorf("Workflow ID should start with 'wf_', got %s", id1)
|
||||
}
|
||||
}
|
||||
|
||||
func TestResponseCapture(t *testing.T) {
|
||||
rc := &responseCapture{}
|
||||
|
||||
// Test Header
|
||||
rc.Header().Set("X-Test", "value")
|
||||
if rc.Header().Get("X-Test") != "value" {
|
||||
t.Error("Header not set correctly")
|
||||
}
|
||||
|
||||
// Test Write
|
||||
n, err := rc.Write([]byte("test content"))
|
||||
if err != nil {
|
||||
t.Errorf("Unexpected error: %v", err)
|
||||
}
|
||||
if n != 12 {
|
||||
t.Errorf("Expected 12 bytes written, got %d", n)
|
||||
}
|
||||
if rc.body.String() != "test content" {
|
||||
t.Errorf("Expected 'test content', got %s", rc.body.String())
|
||||
}
|
||||
|
||||
// Test WriteHeader
|
||||
rc.WriteHeader(http.StatusOK)
|
||||
if rc.status != http.StatusOK {
|
||||
t.Errorf("Expected status 200, got %d", rc.status)
|
||||
}
|
||||
|
||||
// Test WriteHeader doesn't override
|
||||
rc.WriteHeader(http.StatusInternalServerError)
|
||||
if rc.status != http.StatusOK {
|
||||
t.Error("WriteHeader should not override existing status")
|
||||
}
|
||||
}
|
||||
|
||||
func TestWorkflowResponseSerialization(t *testing.T) {
|
||||
resp := WorkflowResponse{
|
||||
ID: "wf_123",
|
||||
Workflow: "test-workflow",
|
||||
Status: "completed",
|
||||
Output: map[string]interface{}{
|
||||
"key": "value",
|
||||
},
|
||||
Error: "",
|
||||
}
|
||||
|
||||
data, err := json.Marshal(resp)
|
||||
if err != nil {
|
||||
t.Errorf("Failed to marshal response: %v", err)
|
||||
}
|
||||
|
||||
var unmarshaled WorkflowResponse
|
||||
if err := json.Unmarshal(data, &unmarshaled); err != nil {
|
||||
t.Errorf("Failed to unmarshal response: %v", err)
|
||||
}
|
||||
|
||||
if unmarshaled.ID != resp.ID {
|
||||
t.Errorf("Expected ID %s, got %s", resp.ID, unmarshaled.ID)
|
||||
}
|
||||
if unmarshaled.Workflow != resp.Workflow {
|
||||
t.Errorf("Expected Workflow %s, got %s", resp.Workflow, unmarshaled.Workflow)
|
||||
}
|
||||
if unmarshaled.Status != resp.Status {
|
||||
t.Errorf("Expected Status %s, got %s", resp.Status, unmarshaled.Status)
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user