feat: add simple app ping (#580)

* feat: add simple ping

* refactor: make ping run on server and show errors

* fix: format issues

* fix: missing translation for enabled ping option for app

* refactor: remove ping queue as no longer needed

* chore: address pull request feedback

* test: add some unit tests

* fix: format issues

* fix: deepsource issues

apps/tasks/src/jobs/ping.ts

@@ -0,0 +1,25 @@
+import { logger } from "@homarr/log";
+import { sendPingRequestAsync } from "@homarr/ping";
+import { pingChannel, pingUrlChannel } from "@homarr/redis";
+
+import { EVERY_MINUTE } from "~/lib/cron-job/constants";
+import { createCronJob } from "~/lib/cron-job/creator";
+
+export const pingJob = createCronJob(EVERY_MINUTE).withCallback(async () => {
+  const urls = await pingUrlChannel.getAllAsync();
+
+  for (const url of new Set(urls)) {
+    const pingResult = await sendPingRequestAsync(url);
+
+    if ("statusCode" in pingResult) {
+      logger.debug(`executed ping for url ${url} with status code ${pingResult.statusCode}`);
+    } else {
+      logger.error(`Executing ping for url ${url} failed with error: ${pingResult.error}`);
+    }
+
+    await pingChannel.publishAsync({
+      url,
+      ...pingResult,
+    });
+  }
+});