feat: add omp integration

1 files changed, 289 insertions, 0 deletions

diff --git a/src/integration/assets/omp/herdr-agent-state.ts b/src/integration/assets/omp/herdr-agent-state.ts
new file mode 100644
index 00000000..64c4b02a
--- /dev/null
+++ b/src/integration/assets/omp/herdr-agent-state.ts
@@ -0,0 +1,289 @@
+// installed by herdr
+// safe to edit. this integration only activates inside herdr-managed panes.
+// HERDR_INTEGRATION_ID=omp
+// HERDR_INTEGRATION_VERSION=1
+// @ts-nocheck
+
+import { createConnection } from "node:net";
+
+const HERDR_ENV = process.env.HERDR_ENV;
+const socketPath = process.env.HERDR_SOCKET_PATH;
+const paneId = process.env.HERDR_PANE_ID;
+const source = "herdr:omp";
+
+function enabled() {
+  return HERDR_ENV === "1" && !!socketPath && !!paneId;
+}
+
+function sendRequest(request: unknown): Promise<void> {
+  if (!enabled()) {
+    return Promise.resolve();
+  }
+
+  return new Promise((resolve) => {
+    let done = false;
+    const finish = () => {
+      if (done) return;
+      done = true;
+      socket.destroy();
+      resolve();
+    };
+
+    const socket = createConnection(socketPath!);
+    socket.on("error", finish);
+    socket.on("connect", () => socket.write(`${JSON.stringify(request)}\n`));
+    socket.on("data", finish);
+    socket.on("end", finish);
+    const timeout = setTimeout(finish, 500);
+    timeout.unref?.();
+  });
+}
+
+type AgentState = "working" | "blocked" | "idle";
+
+type QueuedState = {
+  state: AgentState;
+  message?: string;
+  seq: number;
+};
+
+const idleDebounceMs = parseDurationEnv("HERDR_OMP_IDLE_DEBOUNCE_MS", 250);
+const retryGraceMs = parseDurationEnv("HERDR_OMP_RETRY_GRACE_MS", 2500);
+const retryableErrorPattern =
+  /overloaded|provider.?returned.?error|rate.?limit|too many requests|429|500|502|503|504|service.?unavailable|server.?error|internal.?error|network.?error|connection.?error|connection.?refused|connection.?lost|websocket.?closed|websocket.?error|other side closed|fetch failed|upstream.?connect|reset before headers|socket hang up|ended without|http2 request did not get a response|timed? out|timeout|terminated|retry delay/i;
+let reportSeq = Date.now() * 1000;
+
+function nextReportSeq(): number {
+  reportSeq += 1;
+  return reportSeq;
+}
+
+function parseDurationEnv(name: string, fallback: number): number {
+  const raw = process.env[name];
+  if (!raw) {
+    return fallback;
+  }
+  const parsed = Number.parseInt(raw, 10);
+  if (!Number.isFinite(parsed) || parsed < 0) {
+    return fallback;
+  }
+  return parsed;
+}
+
+function sendState(state: AgentState, message?: string, seq = nextReportSeq()): Promise<void> {
+  return sendRequest({
+    id: `${source}:${Date.now()}:${Math.random().toString(36).slice(2)}`,
+    method: "pane.report_agent",
+    params: {
+      pane_id: paneId,
+      source,
+      agent: "omp",
+      state,
+      message,
+      seq,
+    },
+  });
+}
+
+let sendInFlight = false;
+let queuedState: QueuedState | undefined;
+
+function queueState(state: AgentState, message?: string): void {
+  queuedState = { state, message, seq: nextReportSeq() };
+  if (!sendInFlight) {
+    void drainStateQueue();
+  }
+}
+
+async function drainStateQueue(): Promise<void> {
+  if (sendInFlight) {
+    return;
+  }
+
+  sendInFlight = true;
+  try {
+    while (queuedState) {
+      const next = queuedState;
+      queuedState = undefined;
+      await sendState(next.state, next.message, next.seq);
+    }
+  } finally {
+    sendInFlight = false;
+    if (queuedState) {
+      void drainStateQueue();
+    }
+  }
+}
+
+function lastAssistantMessage(messages: unknown[]): any | undefined {
+  for (let i = messages.length - 1; i >= 0; i -= 1) {
+    const message = messages[i] as any;
+    if (message?.role === "assistant") {
+      return message;
+    }
+  }
+  return undefined;
+}
+
+function retryableErrorMessage(event: any): string | undefined {
+  const messages = Array.isArray(event?.messages) ? event.messages : [];
+  const assistant = lastAssistantMessage(messages);
+  if (assistant?.stopReason !== "error") {
+    return undefined;
+  }
+
+  const errorMessage = String(assistant.errorMessage ?? "");
+  if (!retryableErrorPattern.test(errorMessage)) {
+    return undefined;
+  }
+  return errorMessage || "retryable provider error";
+}
+
+function releaseAgent(): Promise<void> {
+  return sendRequest({
+    id: `${source}:release:${Date.now()}:${Math.random().toString(36).slice(2)}`,
+    method: "pane.release_agent",
+    params: {
+      pane_id: paneId,
+      source,
+      agent: "omp",
+      seq: nextReportSeq(),
+    },
+  });
+}
+
+export default function (pi) {
+  if (!enabled()) {
+    return;
+  }
+
+  let agentActive = false;
+  let retryHoldActive = false;
+  let failureBlocked = false;
+  let failureMessage: string | undefined;
+  let blockedCount = 0;
+  let blockedMessage: string | undefined;
+  let lastState: AgentState | undefined;
+  let lastMessage: string | undefined;
+  let idleTimer: ReturnType<typeof setTimeout> | undefined;
+  let retryTimer: ReturnType<typeof setTimeout> | undefined;
+
+  function clearTimer(timer: ReturnType<typeof setTimeout> | undefined) {
+    if (timer) {
+      clearTimeout(timer);
+    }
+  }
+
+  function clearPendingTimers() {
+    clearTimer(idleTimer);
+    clearTimer(retryTimer);
+    idleTimer = undefined;
+    retryTimer = undefined;
+  }
+
+  function clearFailureState() {
+    retryHoldActive = false;
+    failureBlocked = false;
+    failureMessage = undefined;
+  }
+
+  function desiredState() {
+    if (blockedCount > 0) {
+      return { state: "blocked" as const, message: blockedMessage };
+    }
+    if (failureBlocked) {
+      return { state: "blocked" as const, message: failureMessage };
+    }
+    if (agentActive || retryHoldActive) {
+      return { state: "working" as const, message: undefined };
+    }
+    return { state: "idle" as const, message: undefined };
+  }
+
+  function publishState() {
+    const next = desiredState();
+    if (next.state === lastState && next.message === lastMessage) {
+      return;
+    }
+    lastState = next.state;
+    lastMessage = next.message;
+    queueState(next.state, next.message);
+  }
+
+  function scheduleIdle() {
+    clearPendingTimers();
+    clearFailureState();
+    idleTimer = setTimeout(() => {
+      idleTimer = undefined;
+      publishState();
+    }, idleDebounceMs);
+    idleTimer.unref?.();
+  }
+
+  function holdForRetry(message: string) {
+    clearPendingTimers();
+    retryHoldActive = true;
+    failureBlocked = false;
+    failureMessage = message;
+    publishState();
+
+    retryTimer = setTimeout(() => {
+      retryTimer = undefined;
+      retryHoldActive = false;
+      failureBlocked = true;
+      publishState();
+    }, retryGraceMs);
+    retryTimer.unref?.();
+  }
+
+  pi.events.on("herdr:blocked", (data) => {
+    if (!data?.active) {
+      blockedCount = Math.max(0, blockedCount - 1);
+      if (blockedCount === 0) {
+        blockedMessage = undefined;
+      }
+      publishState();
+      return;
+    }
+
+    clearPendingTimers();
+    blockedCount += 1;
+    blockedMessage = data.label;
+    publishState();
+  });
+
+  pi.on("session_start", () => {
+    publishState();
+  });
+
+  pi.on("agent_start", () => {
+    clearPendingTimers();
+    clearFailureState();
+    agentActive = true;
+    publishState();
+  });
+
+  pi.on("agent_end", (event) => {
+    if (!agentActive) {
+      // OMP can emit duplicate/late end events while auto-retry is already
+      // holding the pane in Working. Do not let an unqualified duplicate end
+      // cancel the retry hold and publish a false Idle.
+      return;
+    }
+
+    agentActive = false;
+
+    const retryableMessage = retryableErrorMessage(event);
+    if (retryableMessage) {
+      holdForRetry(retryableMessage);
+      return;
+    }
+
+    scheduleIdle();
+  });
+
+  pi.on("session_shutdown", async () => {
+    clearPendingTimers();
+    await releaseAgent();
+  });
+}