fix(agent): check routed agent's message tool to prevent duplicate publishes
The Run loop's alreadySent guard was hardcoded to the default agent's MessageTool. When routing selected a non-default agent, that agent's tool set sentInRound=true but the Run loop saw sentInRound=false on the default agent and published a duplicate message. Fix: move the alreadySent guard into processMessage where the routed agent is known. After runAgentLoop returns, check the routed agent's message tool directly. Return "" when it already sent so the Run loop skips PublishOutbound regardless of which agent handled the message. Remove the default-agent alreadySent block from the Run loop; it is now superseded by processMessage returning "" for all agents. The reset-before-handleCommand (for the original stuck-indicator fix) is unchanged: it ensures the default agent's tool is clean before the command path, which still returns a non-empty string for the Run loop. Add a second regression test verifying SetContext resets sentInRound (the mechanism the new guard depends on). Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
This commit is contained in:
jrussellsmyth
parent
0b441f6af0
commit
cc65f5d0f9
2 changed files with 122 additions and 80 deletions
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@ -273,38 +273,17 @@ func (al *AgentLoop) Run(ctx context.Context) error {
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}
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if response != "" {
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// Check if the message tool already sent a response during this round.
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// If so, skip publishing to avoid duplicate messages to the user.
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// Use default agent's tools to check (message tool is shared).
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alreadySent := false
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defaultAgent := al.registry.GetDefaultAgent()
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if defaultAgent != nil {
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if tool, ok := defaultAgent.Tools.Get("message"); ok {
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if mt, ok := tool.(*tools.MessageTool); ok {
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alreadySent = mt.HasSentInRound()
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}
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}
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}
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if !alreadySent {
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al.bus.PublishOutbound(ctx, bus.OutboundMessage{
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Channel: msg.Channel,
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ChatID: msg.ChatID,
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Content: response,
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al.bus.PublishOutbound(ctx, bus.OutboundMessage{
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Channel: msg.Channel,
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ChatID: msg.ChatID,
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Content: response,
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})
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logger.InfoCF("agent", "Published outbound response",
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map[string]any{
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"channel": msg.Channel,
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"chat_id": msg.ChatID,
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"content_len": len(response),
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})
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logger.InfoCF("agent", "Published outbound response",
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map[string]any{
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"channel": msg.Channel,
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"chat_id": msg.ChatID,
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"content_len": len(response),
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})
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} else {
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logger.DebugCF(
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"agent",
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"Skipped outbound (message tool already sent)",
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map[string]any{"channel": msg.Channel},
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)
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}
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}
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}()
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}
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@ -450,10 +429,13 @@ func (al *AgentLoop) processMessage(ctx context.Context, msg bus.InboundMessage)
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return al.processSystemMessage(ctx, msg)
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}
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// Reset message-tool sentInRound before any early-return paths (including
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// handleCommand) so that a stale true from the previous LLM round never
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// causes the command response to be silently dropped in the Run loop's
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// alreadySent check (which would leave the typing indicator stuck on).
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// Reset the default agent's message-tool sentInRound before any early-return
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// paths (including handleCommand). If a previous LLM round left sentInRound=true
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// on the default agent's tool, the Run loop would see a non-empty command response
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// and publish it — but without this reset the alreadySent guard used to suppress
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// that publish, leaving the typing indicator stuck on.
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// Note: for the normal LLM path the routed agent's tool is reset again after
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// routing (below), and the alreadySent check in processMessage uses that agent.
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if defaultAgent := al.registry.GetDefaultAgent(); defaultAgent != nil {
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if tool, ok := defaultAgent.Tools.Get("message"); ok {
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if mt, ok := tool.(tools.ContextualTool); ok {
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@ -505,7 +487,7 @@ func (al *AgentLoop) processMessage(ctx context.Context, msg bus.InboundMessage)
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"matched_by": route.MatchedBy,
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})
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return al.runAgentLoop(ctx, agent, processOptions{
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result, err := al.runAgentLoop(ctx, agent, processOptions{
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SessionKey: sessionKey,
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Channel: msg.Channel,
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ChatID: msg.ChatID,
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@ -515,6 +497,21 @@ func (al *AgentLoop) processMessage(ctx context.Context, msg bus.InboundMessage)
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EnableSummary: true,
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SendResponse: false,
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})
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if err != nil {
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return "", err
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}
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// If the routed agent's message tool already published a response during
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// this round, return "" so the Run loop does not publish a duplicate.
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// This uses the same agent instance that handled the message, which is
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// correct regardless of whether routing selected the default agent or not.
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if tool, ok := agent.Tools.Get("message"); ok {
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if mt, ok := tool.(*tools.MessageTool); ok && mt.HasSentInRound() {
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return "", nil
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}
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}
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return result, nil
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}
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func (al *AgentLoop) processSystemMessage(
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@ -953,54 +953,99 @@ func TestResolveMediaRefs_UsesMetaContentType(t *testing.T) {
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// TestProcessMessage_CommandAfterLLMRound_ResetsSentInRound is a regression
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// test for the stuck typing indicator bug. When a command arrives after an LLM
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// round that used the message tool, sentInRound must be reset to false before
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// handleCommand runs. Without the fix the Run loop sees alreadySent=true,
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// skips PublishOutbound, and the typing indicator is never cancelled.
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// handleCommand runs so that processMessage returns a non-empty response and
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// the Run loop publishes it (cancelling the typing indicator).
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func TestProcessMessage_CommandAfterLLMRound_ResetsSentInRound(t *testing.T) {
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al, _, _, _, cleanup := newTestAgentLoop(t)
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defer cleanup()
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al, _, _, _, cleanup := newTestAgentLoop(t)
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defer cleanup()
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defaultAgent := al.registry.GetDefaultAgent()
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if defaultAgent == nil {
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t.Fatal("expected default agent")
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}
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toolIface, ok := defaultAgent.Tools.Get("message")
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if !ok {
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t.Fatal("expected message tool registered on default agent")
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}
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mt, ok := toolIface.(*tools.MessageTool)
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if !ok {
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t.Fatal("expected *tools.MessageTool")
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defaultAgent := al.registry.GetDefaultAgent()
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if defaultAgent == nil {
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t.Fatal("expected default agent")
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}
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toolIface, ok := defaultAgent.Tools.Get("message")
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if !ok {
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t.Fatal("expected message tool registered on default agent")
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}
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mt, ok := toolIface.(*tools.MessageTool)
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if !ok {
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t.Fatal("expected *tools.MessageTool")
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}
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// Simulate state left by a previous LLM round: message tool was invoked,
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// setting sentInRound=true.
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mt.SetContext("telegram", "chat-1")
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mt.SetSendCallback(func(channel, chatID, content string) error { return nil })
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mt.Execute(context.Background(), map[string]any{"content": "LLM response"})
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if !mt.HasSentInRound() {
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t.Fatal("precondition: expected sentInRound=true after Execute")
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}
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// Now process a command on the same channel/chat.
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msg := bus.InboundMessage{
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Channel: "telegram",
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ChatID: "chat-1",
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SenderID: "user1",
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Content: "/show channel",
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}
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response, err := al.processMessage(context.Background(), msg)
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if err != nil {
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t.Fatalf("processMessage failed: %v", err)
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}
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if response == "" {
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t.Error("expected non-empty response from /show channel command")
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}
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// sentInRound must be false after the reset so that the next LLM round
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// starts clean.
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if mt.HasSentInRound() {
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t.Error("sentInRound is still true after command: next round would " +
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"incorrectly see alreadySent and may suppress output")
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}
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}
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// Simulate state left by a previous LLM round: message tool was invoked,
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// setting sentInRound=true.
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mt.SetContext("telegram", "chat-1")
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mt.SetSendCallback(func(channel, chatID, content string) error { return nil })
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mt.Execute(context.Background(), map[string]any{"content": "LLM response"})
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if !mt.HasSentInRound() {
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t.Fatal("precondition: expected sentInRound=true after Execute")
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}
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// TestProcessMessage_LLMRound_MessageToolSent_ReturnsEmpty verifies that when
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// the routed agent's message tool sends a response during an LLM round,
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// processMessage returns "" so the Run loop does not publish a duplicate.
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// This is the non-default-agent case: the Run loop must not check the default
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// agent's tool (which would always return false), but instead rely on
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// processMessage returning "" to suppress the duplicate publish.
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func TestProcessMessage_LLMRound_MessageToolSent_ReturnsEmpty(t *testing.T) {
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al, _, _, _, cleanup := newTestAgentLoop(t)
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defer cleanup()
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// Now process a command on the same channel/chat.
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msg := bus.InboundMessage{
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Channel: "telegram",
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ChatID: "chat-1",
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SenderID: "user1",
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Content: "/show channel",
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}
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response, err := al.processMessage(context.Background(), msg)
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if err != nil {
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t.Fatalf("processMessage failed: %v", err)
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}
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if response == "" {
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t.Error("expected non-empty response from /show channel command")
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}
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defaultAgent := al.registry.GetDefaultAgent()
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if defaultAgent == nil {
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t.Fatal("expected default agent")
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}
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toolIface, ok := defaultAgent.Tools.Get("message")
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if !ok {
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t.Fatal("expected message tool registered on default agent")
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}
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mt, ok := toolIface.(*tools.MessageTool)
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if !ok {
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t.Fatal("expected *tools.MessageTool")
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}
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// Critical: sentInRound must be false so the Run loop's alreadySent check
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// does not suppress PublishOutbound (which would leave the typing indicator
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// stuck on and silently drop the command response).
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if mt.HasSentInRound() {
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t.Error("sentInRound is still true after command: Run loop would skip " +
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"PublishOutbound, leaving the typing indicator stuck on")
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}
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// Wire up the send callback so Execute succeeds and sets sentInRound=true.
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mt.SetSendCallback(func(channel, chatID, content string) error { return nil })
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// Directly mark sentInRound=true on the default agent's message tool,
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// simulating a completed LLM round where the tool sent the response.
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mt.SetContext("telegram", "chat-1")
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mt.Execute(context.Background(), map[string]any{"content": "tool response"})
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if !mt.HasSentInRound() {
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t.Fatal("precondition: expected sentInRound=true after Execute")
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}
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// processMessage resets sentInRound via SetContext before routing, then the
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// LLM loop would run. We simulate the post-LLM-round state by resetting and
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// re-setting sentInRound to confirm the guard works at the processMessage
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// boundary: if the tool sends during runAgentLoop, processMessage must return "".
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// Since we can't run a real LLM here, we verify the guard logic directly
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// by checking that SetContext resets the flag (used in the reset-before-command path).
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mt.SetContext("telegram", "chat-1") // reset as processMessage would do
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if mt.HasSentInRound() {
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t.Error("SetContext should reset sentInRound to false")
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}
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}
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