feat: add uptime runner agent

2026-04-29 19:48:14 +00:00
commit d8d1adca14
18 changed files with 1234 additions and 0 deletions
@@ -0,0 +1,77 @@
+import { DEFAULT_CONFIG_PATH } from './config.ts';
+
+const SERVICE_FILE_PATH = '/etc/systemd/system/uptimerunner.service';
+
+export class UptimeRunnerSystemd {
+  private readonly serviceTemplate = `[Unit]
+Description=uptime.link Runner Agent
+After=network-online.target
+Wants=network-online.target
+
+[Service]
+ExecStart=/usr/local/bin/uptimerunner run --config ${DEFAULT_CONFIG_PATH}
+Restart=always
+RestartSec=10
+User=root
+Group=root
+Environment=PATH=/usr/bin:/usr/local/bin
+WorkingDirectory=/opt/uptimerunner
+
+[Install]
+WantedBy=multi-user.target
+`;
+
+  public async install(): Promise<void> {
+    this.assertRoot();
+    await Deno.writeTextFile(SERVICE_FILE_PATH, this.serviceTemplate);
+    await run('systemctl', ['daemon-reload']);
+    await run('systemctl', ['enable', 'uptimerunner.service']);
+    console.log(`Service installed: ${SERVICE_FILE_PATH}`);
+  }
+
+  public async uninstall(): Promise<void> {
+    this.assertRoot();
+    await run('systemctl', ['disable', '--now', 'uptimerunner.service']).catch(() => null);
+    await Deno.remove(SERVICE_FILE_PATH).catch(() => null);
+    await run('systemctl', ['daemon-reload']);
+    console.log('Service removed.');
+  }
+
+  public async start(): Promise<void> {
+    await run('systemctl', ['start', 'uptimerunner.service']);
+  }
+
+  public async stop(): Promise<void> {
+    await run('systemctl', ['stop', 'uptimerunner.service']);
+  }
+
+  public async restart(): Promise<void> {
+    await run('systemctl', ['restart', 'uptimerunner.service']);
+  }
+
+  public async status(): Promise<void> {
+    await run('systemctl', ['status', 'uptimerunner.service', '--no-pager']);
+  }
+
+  public async logs(): Promise<void> {
+    await run('journalctl', ['-u', 'uptimerunner.service', '-n', '120', '--no-pager']);
+  }
+
+  private assertRoot(): void {
+    if (Deno.uid && Deno.uid() !== 0) {
+      throw new Error('This service command must run as root.');
+    }
+  }
+}
+
+async function run(commandArg: string, argsArg: string[]): Promise<void> {
+  const command = new Deno.Command(commandArg, {
+    args: argsArg,
+    stdout: 'inherit',
+    stderr: 'inherit',
+  });
+  const output = await command.output();
+  if (!output.success) {
+    throw new Error(`${commandArg} ${argsArg.join(' ')} exited with ${output.code}`);
+  }
+}