deploy fix bug

ops-scripts/tencent_operator.py

@@ -8,6 +8,7 @@ import json
 import shlex
 import sys
 import time
+import textwrap
 import urllib.request
 from pathlib import Path
 from typing import Any
@@ -104,6 +105,7 @@ class CloudOperator:
 
     def deploy(self) -> None:
         self.ensure_agent_online()
+        self.ensure_systemd_unit_installed()
         package_url, sha256 = self.resolve_release_package()
 
         if self.service_name == "gateway":
@@ -119,6 +121,7 @@ class CloudOperator:
 
     def restart(self) -> None:
         self.ensure_agent_online()
+        self.ensure_systemd_unit_installed()
         unit_name = str(self.service_cfg["unit_name"])
         health_url = str(self.service_cfg["health_url"])
         command = " && ".join(
@@ -189,6 +192,59 @@ class CloudOperator:
         self.ensure_task_success(task, f"deploy {self.service_name}")
         log(f"deploy completed for {self.service_name}@{self.instance_id} -> {self.release_id}")
 
+    def ensure_systemd_unit_installed(self) -> None:
+        unit_name = str(self.service_cfg["unit_name"])
+        unit_path = f"/etc/systemd/system/{unit_name}"
+        unit_content = self.systemd_unit_content().rstrip() + "\n"
+        command = textwrap.dedent(
+            f"""\
+            set -Eeuo pipefail
+            unit_path={shlex.quote(unit_path)}
+            tmp_file="$(mktemp)"
+            trap 'rm -f "$tmp_file"' EXIT
+            cat >"$tmp_file" <<'UNIT_EOF'
+            {unit_content}UNIT_EOF
+            if [[ ! -f "$unit_path" ]] || ! cmp -s "$tmp_file" "$unit_path"; then
+              install -D -m 0644 "$tmp_file" "$unit_path"
+              /usr/bin/systemctl daemon-reload
+            fi
+            /usr/bin/systemctl enable {shlex.quote(unit_name)} >/dev/null
+            """
+        )
+        invocation_id = self.run_tat_command(command, f"ensure-unit-{self.service_name}")
+        task = self.wait_for_tat(invocation_id)
+        self.ensure_task_success(task, f"ensure systemd unit {unit_name}")
+
+    def systemd_unit_content(self) -> str:
+        deploy_root = str(self.service_cfg["deploy_root"]).rstrip("/")
+        binary_path = f"{deploy_root}/current/bin/{self.service_name}"
+        config_path = f"{deploy_root}/current/config/prod.yaml"
+        description = f"ChatApp {self.service_name.capitalize()} Service"
+        working_directory = f"{deploy_root}/current"
+        return textwrap.dedent(
+            f"""\
+            [Unit]
+            Description={description}
+            Wants=network-online.target
+            After=network-online.target
+
+            [Service]
+            Type=simple
+            User=root
+            Group=root
+            WorkingDirectory={working_directory}
+            ExecStart={binary_path} -config {config_path}
+            Restart=always
+            RestartSec=3
+            KillSignal=SIGTERM
+            TimeoutStopSec=30
+            LimitNOFILE=65535
+
+            [Install]
+            WantedBy=multi-user.target
+            """
+        )
+
     def run_tat_command(self, command: str, command_name: str) -> str:
         payload: dict[str, Any] = {
             "CommandName": command_name,