notifications: add back app down and app oom mails

src/mailer.js

@@ -7,8 +7,10 @@ exports = module.exports = {
     sendNewLoginLocation,
 
     backupFailed,
-
     certificateRenewalError,
+    appDown,
+    appUp,
+    oomEvent,
 
     sendTestMail,
 
@@ -40,7 +42,8 @@ async function getMailConfig() {
         cloudronName,
         notificationFrom: `"${cloudronName}" <no-reply@${dashboardDomain}>`,
         supportEmail: 'support@cloudron.io',
-        dashboardFqdn
+        dashboardFqdn,
+        notificationsUrl: `https://${dashboardFqdn}/cloudron/#/notifications`
     };
 }
 
@@ -182,19 +185,78 @@ async function passwordReset(user, email, resetLink) {
     await sendMail(mailOptions);
 }
 
+async function appDown(mailTo, app) {
+    assert.strictEqual(typeof mailTo, 'string');
+    assert.strictEqual(typeof app, 'object');
+
+    const mailConfig = await getMailConfig();
+
+    const mailOptions = {
+        from: mailConfig.notificationFrom,
+        to: mailTo,
+        subject: `[${mailConfig.cloudronName}] App ${app.fqdn} is down`,
+        text: render('app_down.ejs', { title: app.manifest.title, appFqdn: app.fqdn, notificationsUrl: mailConfig.notificationsUrl })
+    };
+
+    await sendMail(mailOptions);
+}
+
+async function appUp(mailTo, app) {
+    assert.strictEqual(typeof mailTo, 'string');
+    assert.strictEqual(typeof app, 'object');
+
+    const mailConfig = await getMailConfig();
+
+    const mailOptions = {
+        from: mailConfig.notificationFrom,
+        to: mailTo,
+        subject: `[${mailConfig.cloudronName}] App ${app.fqdn} is back online`,
+        text: render('app_up.ejs', { title: app.manifest.title, appFqdn: app.fqdn, notificationsUrl: mailConfig.notificationsUrl })
+    };
+
+    await sendMail(mailOptions);
+}
+
+async function oomEvent(mailTo, app, addon, containerId, event) {
+    assert.strictEqual(typeof mailTo, 'string');
+    assert.strictEqual(typeof app, 'object');
+    assert.strictEqual(typeof addon, 'object');
+    assert.strictEqual(typeof containerId, 'string');
+    assert.strictEqual(typeof event, 'object');
+
+    const mailConfig = await getMailConfig();
+
+    const templateData = {
+        webadminUrl: `https://${mailConfig.dashboardFqdn}`,
+        cloudronName: mailConfig.cloudronName,
+        app,
+        addon,
+        event: JSON.stringify(event),
+        notificationsUrl: mailConfig.notificationsUrl
+    };
+
+    const mailOptions = {
+        from: mailConfig.notificationFrom,
+        to: mailTo,
+        subject: `[${mailConfig.cloudronName}] ${app ? app.fqdn : addon.name} was restarted (OOM)`,
+        text: render('oom_event.ejs', templateData)
+    };
+
+    await sendMail(mailOptions);
+}
+
 async function backupFailed(mailTo, errorMessage, logUrl) {
     assert.strictEqual(typeof mailTo, 'string');
     assert.strictEqual(typeof errorMessage, 'string');
     assert.strictEqual(typeof logUrl, 'string');
 
     const mailConfig = await getMailConfig();
-    const notificationsUrl = `https://${mailConfig.dashboardFqdn}/cloudron/#/notifications`;
 
     const mailOptions = {
         from: mailConfig.notificationFrom,
         to: mailTo,
         subject: `[${mailConfig.cloudronName}] Failed to backup`,
-        text: render('backup_failed.ejs', { cloudronName: mailConfig.cloudronName, message: errorMessage, logUrl, notificationsUrl })
+        text: render('backup_failed.ejs', { cloudronName: mailConfig.cloudronName, message: errorMessage, logUrl, notificationsUrl: mailConfig.notificationsUrl })
     };
 
     await sendMail(mailOptions);
@@ -206,13 +268,12 @@ async function certificateRenewalError(mailTo, domain, message) {
     assert.strictEqual(typeof message, 'string');
 
     const mailConfig = await getMailConfig();
-    const notificationsUrl = `https://${mailConfig.dashboardFqdn}/cloudron/#/notifications`;
 
     const mailOptions = {
         from: mailConfig.notificationFrom,
         to: mailTo,
         subject: `[${mailConfig.cloudronName}] Certificate renewal error`,
-        text: render('certificate_renewal_error.ejs', { domain, message, notificationsUrl })
+        text: render('certificate_renewal_error.ejs', { domain, message, notificationsUrl: mailConfig.notificationsUrl })
     };
 
     await sendMail(mailOptions);