dashboard.py

@@ -1,15 +1,20 @@
 import json
 import os
 import threading
+import time
 from http.server import HTTPServer, BaseHTTPRequestHandler
+from socketserver import ThreadingMixIn
 
-from health import HealthServer, SyncSession
+from health import SyncSession
+
+
+class ThreadingHTTPServer(ThreadingMixIn, HTTPServer):
+    daemon_threads = True
 
 
 class DashboardServer:
-    def __init__(self, port: int = 8082, health: HealthServer = None, session: SyncSession = None):
+    def __init__(self, port: int = 8082, session: SyncSession = None):
         self.port = port
-        self.health = health
         self.session = session
         self.server = None
         self.thread = None
@@ -19,11 +24,15 @@ class DashboardServer:
         self._event_count = 0
         self._backoff_min = 0
         self._config = {}
+        self._last_sync = None
+        self._last_duration = 0.0
+        self._last_success = None
+        self._last_latency_ms = 0
         self._base_dir = os.path.dirname(os.path.abspath(__file__))
 
     def start(self):
         handler = self._make_handler()
-        self.server = HTTPServer(("0.0.0.0", self.port), handler)
+        self.server = ThreadingHTTPServer(("0.0.0.0", self.port), handler)
         self.thread = threading.Thread(target=self.server.serve_forever, daemon=True)
         self.thread.start()
 
@@ -53,6 +62,13 @@ class DashboardServer:
         with self._lock:
             self._backoff_min = n
 
+    def set_last_sync(self, last_sync, duration: float, success: bool, latency_ms: int = 0):
+        with self._lock:
+            self._last_sync = last_sync
+            self._last_duration = duration
+            self._last_success = success
+            self._last_latency_ms = latency_ms
+
     def _get_status(self):
         with self._lock:
             syncing = self._syncing
@@ -60,15 +76,10 @@ class DashboardServer:
             event_count = self._event_count
             backoff_min = self._backoff_min
             config = dict(self._config)
-
-        last_sync = None
-        duration = 0.0
-        last_success = None
-        if self.health:
-            with self.health.lock:
-                last_sync = self.health.last_sync
-                duration = self.health.last_sync_duration
-                last_success = self.health.last_sync_success
+            last_sync = self._last_sync
+            duration = self._last_duration
+            last_success = self._last_success
+            latency_ms = self._last_latency_ms
 
         status = "idle"
         if syncing:
@@ -92,7 +103,7 @@ class DashboardServer:
             "status": status,
             "last_sync": last_sync.isoformat() if last_sync else None,
             "duration": duration,
-            "ics_latency_ms": ics_latency,
+            "ics_latency_ms": ics_latency if ics_latency else latency_ms,
             "event_count": event_count,
             "next_sync_in": next_sync_in,
             "session": session_data,

docker-compose.yml

@@ -4,7 +4,6 @@ services:
     container_name: baikal-sync
     restart: always
     ports:
-      - "8081:8081"
       - "8082:8082"
     environment:
       - ICS_URL=${ICS_URL}

static/dashboard.html

@@ -333,6 +333,8 @@ header {
     lastPoll: null
   };
 
+  let countdownRemaining = 0;
+
   const $ = (sel) => document.querySelector(sel);
 
   function fmtBytes(b) {
@@ -502,7 +504,7 @@ header {
     $("#stackedLegend").innerHTML =
       '<div class="legend-item"><span class="legend-dot" style="background:var(--green)"></span>Added: ' + added + "</div>" +
       '<div class="legend-item"><span class="legend-dot" style="background:var(--blue)"></span>Updated: ' + updated + "</div>" +
-      '<div class="legend-item"><span class="legend-dot" style="background:var(--purple)"></span>Deleted: " + deleted + "</div>" +
+      '<div class="legend-item"><span class="legend-dot" style="background:var(--purple)"></span>Deleted: ' + deleted + "</div>" +
       '<div class="legend-item"><span class="legend-dot" style="background:var(--text-secondary)"></span>Skipped: ' + skipped + "</div>";
   }
 
@@ -673,14 +675,12 @@ header {
     const fill = $("#progressFill");
     if (!el || !fill) return;
 
-    let remaining = (state.data.next_sync_in || 0) - 1;
-    if (remaining < 0) remaining = 0;
-    el.textContent = fmtCountdown(remaining);
+    countdownRemaining = Math.max(0, countdownRemaining - 1);
+    el.textContent = fmtCountdown(countdownRemaining);
 
     const freq = state.data.config ? state.data.config.sync_frequency * 60 : 600;
-    const pct = freq > 0 ? Math.max(0, Math.min(100, ((freq - remaining) / freq) * 100)) : 100;
+    const pct = freq > 0 ? Math.max(0, Math.min(100, ((freq - countdownRemaining) / freq) * 100)) : 100;
     fill.style.width = pct + "%";
-    state.data.next_sync_in = remaining;
   }
 
   async function poll() {
@@ -689,6 +689,12 @@ header {
       if (!res.ok) throw new Error("HTTP " + res.status);
       state.data = await res.json();
       state.lastPoll = Date.now();
+      if (state.data.last_sync && state.data.config && state.data.config.sync_frequency) {
+        const syncEpoch = new Date(state.data.last_sync).getTime();
+        const freqSec = state.data.config.sync_frequency * 60;
+        const now = Date.now();
+        countdownRemaining = Math.max(0, Math.round(((syncEpoch + freqSec * 1000) - now) / 1000));
+      }
       renderStatusBar(state.data);
       renderStats(state.data);
       renderStackedBar(state.data);

sync_calendar.py

@@ -89,6 +89,7 @@ def sync_once(
             msg = "no changes (ETag)"
             session.record(True, duration, 0, 0, 0, True, 0, msg)
             health.update_status(datetime.now(timezone.utc), duration, True, 0)
+            dashboard.set_last_sync(datetime.now(timezone.utc), duration, True, 0)
             dashboard.set_syncing(False)
             return True
 
@@ -112,6 +113,7 @@ def sync_once(
             if ics_download_size:
                 pass
             health.update_status(datetime.now(timezone.utc), duration, True, 0)
+            dashboard.set_last_sync(datetime.now(timezone.utc), duration, True, ics_latency_ms)
             dashboard.set_syncing(False)
             return True
 
@@ -141,6 +143,7 @@ def sync_once(
             for uid, h in ics_uids.items():
                 state.upsert_event(uid, h)
             health.update_status(datetime.now(timezone.utc), duration, True, len(ics_uids))
+            dashboard.set_last_sync(datetime.now(timezone.utc), duration, True, ics_latency_ms)
             dashboard.set_event_count(len(ics_uids))
             dashboard.set_syncing(False)
             return True
@@ -156,6 +159,7 @@ def sync_once(
             msg = f"first run, registered {len(to_add)} events"
             session.record(True, duration, len(to_add), 0, 0, False, ics_latency_ms, msg, ics_download_size)
             health.update_status(datetime.now(timezone.utc), duration, True, len(ics_uids))
+            dashboard.set_last_sync(datetime.now(timezone.utc), duration, True, ics_latency_ms)
             dashboard.set_event_count(len(ics_uids))
             dashboard.set_syncing(False)
             return True
@@ -181,6 +185,7 @@ def sync_once(
             msg = "calendar not found"
             session.record(False, duration, 0, 0, 0, False, ics_latency_ms, msg, ics_download_size)
             health.update_status(datetime.now(timezone.utc), duration, False, 0)
+            dashboard.set_last_sync(datetime.now(timezone.utc), duration, False, ics_latency_ms)
             dashboard.set_syncing(False)
             return False
 
@@ -226,6 +231,7 @@ def sync_once(
             session.record(True, duration, added, updated, deleted, False, ics_latency_ms, msg, ics_download_size)
             logger.info("Sync completed in %.1fs. Total events: %d", duration, total)
             health.update_status(datetime.now(timezone.utc), duration, True, total)
+            dashboard.set_last_sync(datetime.now(timezone.utc), duration, True, ics_latency_ms)
             dashboard.set_event_count(total)
             dashboard.set_syncing(False)
             return True
@@ -237,6 +243,7 @@ def sync_once(
             msg = str(exc)[:80]
             session.record(False, duration, 0, 0, 0, False, ics_latency_ms, msg, ics_download_size)
             health.update_status(datetime.now(timezone.utc), duration, False, 0)
+            dashboard.set_last_sync(datetime.now(timezone.utc), duration, False, ics_latency_ms)
             dashboard.set_syncing(False)
             return False
 
@@ -246,6 +253,7 @@ def sync_once(
         msg = str(exc)[:80]
         session.record(False, duration, 0, 0, 0, False, ics_latency_ms, msg, ics_download_size)
         health.update_status(datetime.now(timezone.utc), duration, False, 0)
+        dashboard.set_last_sync(datetime.now(timezone.utc), duration, False, ics_latency_ms)
         dashboard.set_syncing(False)
         return False
 
@@ -267,7 +275,7 @@ def main():
     logger.info("Health endpoint on :8081")
 
     session = SyncSession()
-    dashboard = DashboardServer(8082, health, session)
+    dashboard = DashboardServer(8082, session)
     dashboard.update_config({
         "ics_url": config.ics_url,
         "baikal_url": config.baikal_url,