feat: live update log in UI and suppress lifecycle Telegram during SAC update

Poll remote update_script.log while SSH update runs; skip lifecycle notify
when host agent_update_state is running (SAC v0.5.1).

backend/app/services/host_remote_actions.py

@@ -16,7 +16,7 @@ from app.services.agent_update import execute_agent_update_fallback
 from app.services.agent_update_types import AgentUpdateFallbackResult
 from app.services.linux_admin_settings import get_effective_linux_admin_config
 from app.services.agent_update_settings import get_effective_agent_update_config
-from app.services.ssh_connect import iter_ssh_targets, run_ssh_monitor_update, SshCommandResult
+from app.services.ssh_connect import iter_ssh_targets, run_ssh_monitor_update, SshCommandResult, tail_ssh_monitor_update_log
 
 logger = logging.getLogger(__name__)
 
@@ -113,12 +113,61 @@ def _apply_ssh_update_result(db: Session, host: Host, result: SshCommandResult)
         host.agent_update_last_error = (result.message or "SSH update failed")[:2000]
 
 
+_REMOTE_LOG_POLL_SEC = 2.0
+
+
+def _poll_ssh_update_log_loop(
+    host_id: int,
+    *,
+    stop: threading.Event,
+) -> None:
+    """Периодически подтягивает tail update_script.log в hosts.remote_action для UI."""
+    while not stop.wait(_REMOTE_LOG_POLL_SEC):
+        session = SessionLocal()
+        try:
+            row = session.get(Host, host_id)
+            if row is None or row.agent_update_state != "running":
+                continue
+            cfg = get_effective_linux_admin_config(session)
+            if not cfg.configured:
+                continue
+            try:
+                targets = iter_ssh_targets(row)
+            except Exception:
+                continue
+            tail = ""
+            for target in targets:
+                try:
+                    tail = tail_ssh_monitor_update_log(
+                        target=target,
+                        user=cfg.user,
+                        password=cfg.password,
+                    )
+                except Exception:
+                    logger.debug("update log tail failed host_id=%s target=%s", host_id, target, exc_info=True)
+                    continue
+                if tail:
+                    break
+            payload = dict(row.remote_action or {})
+            if tail:
+                payload["output"] = tail
+                payload["message"] = "Выполняется обновление… (лог с хоста)"
+            row.remote_action = payload
+            session.commit()
+        except Exception:
+            logger.debug("remote log poll failed host_id=%s", host_id, exc_info=True)
+            session.rollback()
+        finally:
+            session.close()
+
+
 def start_host_remote_action(
     db: Session,
     host: Host,
     *,
     title: str,
     runner: ActionRunner,
+    poll_remote_log: bool = False,
 ) -> dict[str, Any]:
     host_id = int(host.id)
     with _lock:
@@ -133,6 +182,17 @@ def start_host_remote_action(
 
     def _worker() -> None:
         session = SessionLocal()
+        stop_poll = threading.Event()
+        poll_thread: threading.Thread | None = None
+        if poll_remote_log and runner is run_ssh_monitor_update_action:
+            poll_thread = threading.Thread(
+                target=_poll_ssh_update_log_loop,
+                args=(host_id,),
+                kwargs={"stop": stop_poll},
+                name=f"sac-remote-log-{host_id}",
+                daemon=True,
+            )
+            poll_thread.start()
         try:
             row = session.get(Host, host_id)
             if row is None:
@@ -167,6 +227,9 @@ def start_host_remote_action(
                 }
                 session.commit()
         finally:
+            stop_poll.set()
+            if poll_thread is not None:
+                poll_thread.join(timeout=5.0)
             session.close()
             with _lock:
                 _running.discard(host_id)

backend/app/services/notify_dispatch.py

@@ -4,7 +4,7 @@ import logging
 
 from sqlalchemy.orm import Session
 
-from app.models import Event, Problem
+from app.models import Event, Host, Problem
 from app.services import email_notify, mobile_notify, telegram_notify, webhook_notify
 from app.services.notification_cooldown import should_notify_event, should_notify_problem
 from app.services.notification_policy import get_effective_notification_policy
@@ -111,8 +111,43 @@ def notify_daily_report(event: Event, *, db: Session | None = None) -> None:
     _dispatch_lifecycle_channels(event, db=db, policy=policy)
 
 
+def _host_sac_update_running(event: Event, db: Session | None) -> bool:
+    """Пока SAC выполняет agent-update на хосте — не слать lifecycle в Telegram."""
+    if db is None or not event.host_id:
+        return False
+    host = db.get(Host, event.host_id)
+    if host is None:
+        return False
+    if (host.agent_update_state or "").strip().lower() == "running":
+        logger.info(
+            "notify lifecycle skipped host update running host_id=%s event_id=%s",
+            host.id,
+            event.event_id,
+        )
+        return True
+    return False
+
+
+def _lifecycle_suppress_notifications(event: Event, *, db: Session | None = None) -> bool:
+    """Не слать TG при штатном SAC/cron update (lifecycle с trigger deploy_recycle)."""
+    if _host_sac_update_running(event, db):
+        return True
+    details = event.details if isinstance(event.details, dict) else {}
+    trigger = str(details.get("trigger") or "").strip().lower()
+    if trigger in ("deploy_recycle", "sac_update", "agent_update"):
+        logger.info(
+            "notify lifecycle skipped trigger=%s event_id=%s",
+            trigger,
+            event.event_id,
+        )
+        return True
+    return False
+
+
 def notify_lifecycle(event: Event, *, db: Session | None = None) -> None:
     """Старт/стоп/reload агента — всегда в каналы SAC (кроме TG, если telegram_via=agent)."""
+    if _lifecycle_suppress_notifications(event, db=db):
+        return
     if _skip_notifications_for_hidden_event(event, db):
         return
     policy = get_effective_notification_policy(db)

backend/app/services/ssh_connect.py

@@ -9,6 +9,7 @@ from dataclasses import dataclass
 from app.config import get_settings
 from app.models import Host
 
+SSH_MONITOR_UPDATE_LOG_PATH = "/var/log/update_script.log"
 SSH_MONITOR_UPDATE_SCRIPT = "/opt/scripts/update_ssh_monitor.sh"
 SSH_MONITOR_UPDATE_DIR = "/opt/scripts/update"
 SSH_MONITOR_REPO_NAME = "ssh-monitor"
@@ -549,3 +550,29 @@ def run_ssh_monitor_update(
             exit_code=updated.exit_code,
         )
     return updated
+
+
+def tail_ssh_monitor_update_log(
+    *,
+    target: str,
+    user: str,
+    password: str,
+    lines: int = 120,
+) -> str:
+    """Хвост /var/log/update_script.log на удалённом хосте (для live-лога в SAC UI)."""
+    safe_lines = max(20, min(int(lines), 400))
+    remote_cmd = (
+        f"test -r {SSH_MONITOR_UPDATE_LOG_PATH} && "
+        f"tail -n {safe_lines} {SSH_MONITOR_UPDATE_LOG_PATH} 2>/dev/null || true"
+    )
+    result = run_ssh_command(
+        target=target,
+        user=user,
+        password=password,
+        remote_cmd=remote_cmd,
+        command_timeout_sec=25,
+        need_root=True,
+        login_shell=False,
+    )
+    text = (result.stdout or "").strip()
+    return _truncate_output(text)