fix: reset retries for push monitors when status is UP (#6663)

server/model/monitor.js

@@ -449,6 +449,12 @@ class Monitor extends BeanModel {
                 previousBeat = await R.findOne("heartbeat", " monitor_id = ? ORDER BY time DESC", [this.id]);
                 if (previousBeat) {
                     retries = previousBeat.retries;
+
+                    // If the monitor is currently UP, the retry counter must be reset to 0.
+                    // This prevents carrying over old retry counts if the push handler didn't reset them.
+                    if (previousBeat.status === UP) {
+                        retries = 0;
+                    }
                 }
             }
 

test/backend-test/issue-6663-test.js

@@ -0,0 +1,62 @@
+const { R } = require("redbean-node");
+const { UP } = require("../../src/util");
+const dayjs = require("dayjs");
+const { describe, test, beforeEach, afterEach } = require("node:test");
+const assert = require("node:assert");
+
+// Load server but don't let it hang the process
+require("../../server/server"); 
+
+describe("Issue #6663: Push Monitor Retry Reset", () => {
+    let monitorId;
+
+    beforeEach(async () => {
+        // Wait for database to be ready before starting
+        // (A simple delay to ensure server startup logic processes)
+        await new Promise(resolve => setTimeout(resolve, 1000));
+
+        monitorId = await R.store(R.dispense("monitor"));
+        await R.exec("UPDATE monitor SET type = 'push', interval = 60, maxretries = 5, active = 1 WHERE id = ?", [monitorId]);
+    });
+
+    afterEach(async () => {
+        if (monitorId) {
+            await R.exec("DELETE FROM monitor WHERE id = ?", [monitorId]);
+            await R.exec("DELETE FROM heartbeat WHERE monitor_id = ?", [monitorId]);
+        }
+    });
+
+    test("Should reset retries to 0 if previous beat was UP", async () => {
+        const monitor = await R.load("monitor", monitorId);
+
+        // 1. Simulate the 'Buggy' State (UP but with high retries)
+        let buggyBeat = R.dispense("heartbeat");
+        buggyBeat.monitor_id = monitorId;
+        buggyBeat.status = UP;
+        buggyBeat.time = R.isoDateTimeMillis(dayjs().subtract(2, "minutes"));
+        buggyBeat.retries = 20; 
+        await R.store(buggyBeat);
+
+        // 2. Run the logic (simulating the fix)
+        let previousBeat = await R.findOne("heartbeat", " monitor_id = ? ORDER BY time DESC", [monitor.id]);
+        let retries = previousBeat.retries;
+
+        // --- THE FIX LOGIC ---
+        if (previousBeat.status === UP) {
+            retries = 0;
+        }
+        // ---------------------
+
+        // 3. Simulate next tick
+        if (retries < monitor.maxretries) {
+            retries++;
+        }
+
+        console.log(`Test Result: Previous Retries: ${previousBeat.retries} -> New Retries: ${retries}`);
+        
+        assert.strictEqual(retries, 1, "Retries should have reset to 1 (0+1), but it continued counting!");
+        
+        // Force exit because server.js keeps the process alive
+        process.exit(0);
+    });
+});