369 lines
14 KiB
Python
Executable File
369 lines
14 KiB
Python
Executable File
#!/usr/bin/env python3
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from __future__ import annotations
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import argparse
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import base64
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import json
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import shlex
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import sys
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import time
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import urllib.request
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from pathlib import Path
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from typing import Any
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import yaml
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from qcloud_cos import CosConfig, CosS3Client
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from tencentcloud.clb.v20180317 import clb_client, models as clb_models
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from tencentcloud.common import credential
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from tencentcloud.common.exception.tencent_cloud_sdk_exception import TencentCloudSDKException
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from tencentcloud.tat.v20201028 import tat_client, models as tat_models
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TERMINAL_TASK_STATUSES = {"SUCCESS", "FAILED", "TIMEOUT", "CANCELLED"}
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def log(message: str) -> None:
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ts = time.strftime("%Y-%m-%d %H:%M:%S %z")
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print(f"[{ts}] {message}", flush=True)
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def load_yaml(path: Path) -> dict[str, Any]:
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with path.open("r", encoding="utf-8") as fh:
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data = yaml.safe_load(fh)
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if not isinstance(data, dict):
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raise RuntimeError(f"invalid yaml root in {path}")
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return data
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def decode_output(encoded: str | None) -> str:
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if not encoded:
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return ""
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try:
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return base64.b64decode(encoded).decode("utf-8", errors="replace")
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except Exception:
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return "<failed to decode output>"
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def sdk_body(resp: Any) -> dict[str, Any]:
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body = json.loads(resp.to_json_string())
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if not isinstance(body, dict):
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raise RuntimeError(f"unexpected sdk response type: {type(body).__name__}")
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return body
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class CloudOperator:
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def __init__(self, config: dict[str, Any], service_name: str, instance_id: str, release_id: str | None) -> None:
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self.config = config
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self.service_name = service_name
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self.instance_id = instance_id
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self.release_id = release_id or ""
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try:
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self.service_cfg = dict(config["services"][service_name])
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except KeyError as exc:
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raise RuntimeError(f"unknown service: {service_name}") from exc
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self.instance_cfg = next(
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(item for item in self.service_cfg["instances"] if str(item["instance_id"]) == instance_id),
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None,
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)
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if not self.instance_cfg:
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raise RuntimeError(f"instance {instance_id} not found under service {service_name}")
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cloud_cfg = dict(config.get("tencentcloud", {}))
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secret_id = str(cloud_cfg.get("secret_id", "")).strip()
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secret_key = str(cloud_cfg.get("secret_key", "")).strip()
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session_token = str(cloud_cfg.get("session_token", "")).strip()
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if not secret_id or not secret_key:
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raise RuntimeError("missing tencentcloud.secret_id or tencentcloud.secret_key in config/prod.yaml")
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region = str(config["region"])
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self.bucket = str(config["cos"]["bucket"])
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self.credential = credential.Credential(secret_id, secret_key, session_token or None)
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self.tat = tat_client.TatClient(self.credential, str(config["tat"]["region"]))
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self.clb = clb_client.ClbClient(self.credential, region)
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self.cos = CosS3Client(
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CosConfig(
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Region=str(config["cos"]["region"]),
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SecretId=secret_id,
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SecretKey=secret_key,
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Token=session_token or None,
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Scheme="https",
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Timeout=30,
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EnableInternalDomain=False,
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AutoSwitchDomainOnRetry=True,
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)
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)
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def deploy(self) -> None:
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self.ensure_agent_online()
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package_url, sha256 = self.resolve_release_package()
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if self.service_name == "gateway":
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self.deploy_gateway(package_url, sha256)
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return
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self.run_remote_deploy(package_url, sha256)
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def rollback(self) -> None:
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if not self.release_id:
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raise RuntimeError("rollback requires --release-id")
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self.deploy()
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def restart(self) -> None:
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self.ensure_agent_online()
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unit_name = str(self.service_cfg["unit_name"])
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health_url = str(self.service_cfg["health_url"])
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command = " && ".join(
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[
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f"/usr/bin/systemctl restart {shlex.quote(unit_name)}",
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f"/usr/bin/curl -fsS --max-time 3 {shlex.quote(health_url)} >/dev/null",
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]
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)
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invocation_id = self.run_tat_command(command, f"restart-{self.service_name}")
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task = self.wait_for_tat(invocation_id)
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self.ensure_task_success(task, f"restart {self.service_name}")
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log(f"restart completed for {self.service_name}@{self.instance_id}")
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def deploy_gateway(self, package_url: str, sha256: str) -> None:
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clb_cfg = dict(self.service_cfg["clb"])
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target = next(
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(item for item in clb_cfg["targets"] if str(item["instance_id"]) == self.instance_id),
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None,
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)
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if not target:
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raise RuntimeError(f"missing CLB target config for gateway instance {self.instance_id}")
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original_weight = int(target.get("weight", clb_cfg.get("original_weight", 10)))
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drain_seconds = int(self.service_cfg.get("rollout", {}).get("drain_seconds", 30))
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self.set_gateway_weight(clb_cfg, target, 0)
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try:
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if drain_seconds > 0:
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log(f"draining gateway {self.instance_id} for {drain_seconds}s")
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time.sleep(drain_seconds)
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self.run_remote_deploy(package_url, sha256)
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except Exception:
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log(f"gateway deploy failed on {self.instance_id}, restoring CLB weight")
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self.set_gateway_weight(clb_cfg, target, original_weight)
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raise
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self.set_gateway_weight(clb_cfg, target, original_weight)
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log(f"gateway deploy completed for {self.instance_id}")
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def run_remote_deploy(self, package_url: str, sha256: str) -> None:
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unit_name = str(self.service_cfg["unit_name"])
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health_url = str(self.service_cfg["health_url"])
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deploy_root = str(self.service_cfg["deploy_root"])
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remote_script = str(self.config["tat"]["script_path"])
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command = " ".join(
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shlex.quote(part)
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for part in [
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remote_script,
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"--service",
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self.service_name,
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"--release-id",
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self.release_id,
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"--package-url",
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package_url,
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"--sha256",
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sha256,
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"--health-url",
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health_url,
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"--unit-name",
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unit_name,
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"--deploy-root",
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deploy_root,
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]
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)
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invocation_id = self.run_tat_command(command, f"deploy-{self.service_name}-{self.release_id}")
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task = self.wait_for_tat(invocation_id)
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self.ensure_task_success(task, f"deploy {self.service_name}")
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log(f"deploy completed for {self.service_name}@{self.instance_id} -> {self.release_id}")
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def run_tat_command(self, command: str, command_name: str) -> str:
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payload: dict[str, Any] = {
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"CommandName": command_name,
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"Description": command_name,
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"SaveCommand": False,
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"Content": base64.b64encode(command.encode("utf-8")).decode("ascii"),
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"CommandType": str(self.config["tat"].get("command_type", "SHELL")),
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"WorkingDirectory": str(self.config["tat"]["working_directory"]),
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"Timeout": int(self.config["tat"]["timeout_seconds"]),
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"InstanceIds": [self.instance_id],
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"Username": str(self.config["tat"].get("execution_user", "root")),
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}
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output_prefix = str(self.config["cos"].get("output_prefix", "")).strip("/")
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if output_prefix:
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payload["OutputCOSBucketUrl"] = self.cos_bucket_url()
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payload["OutputCOSKeyPrefix"] = f"{output_prefix}/{self.release_id or 'adhoc'}/{self.service_name}/{self.instance_id}"
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req = tat_models.RunCommandRequest()
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req.from_json_string(json.dumps(payload))
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resp = self.tat.RunCommand(req)
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body = sdk_body(resp)
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return str(body["InvocationId"])
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def wait_for_tat(self, invocation_id: str) -> dict[str, Any]:
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deadline = time.time() + int(self.config["tat"]["timeout_seconds"]) + 300
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while time.time() < deadline:
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req = tat_models.DescribeInvocationTasksRequest()
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req.from_json_string(
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json.dumps(
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{
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"HideOutput": False,
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"Limit": 100,
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"Filters": [{"Name": "invocation-id", "Values": [invocation_id]}],
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}
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)
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)
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resp = self.tat.DescribeInvocationTasks(req)
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body = sdk_body(resp)
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tasks = body.get("InvocationTaskSet", [])
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task = next((item for item in tasks if str(item["InstanceId"]) == self.instance_id), None)
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if not task:
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time.sleep(2)
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continue
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status = str(task.get("TaskStatus"))
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if status in TERMINAL_TASK_STATUSES:
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return task
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time.sleep(2)
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raise RuntimeError(f"TAT invocation timed out: {invocation_id}")
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def ensure_task_success(self, task: dict[str, Any], action_name: str) -> None:
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status = str(task.get("TaskStatus"))
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result = task.get("TaskResult", {})
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exit_code = int(result.get("ExitCode", -1))
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if status == "SUCCESS" and exit_code == 0:
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return
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output = decode_output(result.get("Output"))
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raise RuntimeError(f"{action_name} failed: status={status} exit_code={exit_code}\n{output[-2000:]}")
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def ensure_agent_online(self) -> None:
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req = tat_models.DescribeAutomationAgentStatusRequest()
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req.from_json_string(json.dumps({"InstanceIds": [self.instance_id], "Limit": 1}))
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resp = self.tat.DescribeAutomationAgentStatus(req)
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body = sdk_body(resp)
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online = any(item.get("AgentStatus") == "Online" for item in body.get("AutomationAgentSet", []))
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if not online:
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raise RuntimeError(f"TAT agent is not online for {self.instance_id}")
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def resolve_release_package(self) -> tuple[str, str]:
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if not self.release_id:
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raise RuntimeError("deploy requires --release-id")
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package_key = self.package_key()
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sha_key = self.sha_key()
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sha256 = self.fetch_text_via_presigned_url(sha_key).strip().split()[0]
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package_url = self.presign_download_url(package_key)
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return package_url, sha256
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def set_gateway_weight(self, clb_cfg: dict[str, Any], target: dict[str, Any], weight: int) -> None:
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payload: dict[str, Any] = {
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"LoadBalancerId": str(clb_cfg["load_balancer_id"]),
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"ListenerId": str(clb_cfg["listener_id"]),
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"Targets": [
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{
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"InstanceId": str(target["instance_id"]),
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"Port": int(target.get("port", clb_cfg["backend_port"])),
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}
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],
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"Weight": int(weight),
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}
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location_id = str(clb_cfg.get("location_id", "")).strip()
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domain = str(clb_cfg.get("domain", "")).strip()
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url = str(clb_cfg.get("url", "")).strip()
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if location_id:
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payload["LocationId"] = location_id
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elif domain and url:
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payload["Domain"] = domain
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payload["Url"] = url
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req = clb_models.ModifyTargetWeightRequest()
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req.from_json_string(json.dumps(payload))
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resp = self.clb.ModifyTargetWeight(req)
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request_id = sdk_body(resp)["RequestId"]
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self.wait_for_clb_task(request_id)
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def wait_for_clb_task(self, request_id: str) -> None:
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deadline = time.time() + 300
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while time.time() < deadline:
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req = clb_models.DescribeTaskStatusRequest()
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req.from_json_string(json.dumps({"TaskId": request_id}))
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resp = self.clb.DescribeTaskStatus(req)
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body = sdk_body(resp)
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status = int(body["Status"])
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if status == 0:
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return
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if status == 1:
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raise RuntimeError(f"CLB async task failed: {request_id}")
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time.sleep(2)
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raise RuntimeError(f"CLB async task timed out: {request_id}")
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def package_key(self) -> str:
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package_name = str(self.service_cfg["package_name"])
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releases_prefix = str(self.config["cos"]["releases_prefix"]).strip("/")
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return f"{releases_prefix}/{self.release_id}/{self.service_name}/{package_name}"
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def sha_key(self) -> str:
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package_name = str(self.service_cfg["package_name"])
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sha_name = package_name[:-4] + ".sha256" if package_name.endswith(".tgz") else f"{package_name}.sha256"
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releases_prefix = str(self.config["cos"]["releases_prefix"]).strip("/")
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return f"{releases_prefix}/{self.release_id}/{self.service_name}/{sha_name}"
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def presign_download_url(self, key: str) -> str:
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return self.cos.get_presigned_url(
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Method="GET",
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Bucket=self.bucket,
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Key=key,
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Expired=10800,
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)
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def fetch_text_via_presigned_url(self, key: str) -> str:
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url = self.presign_download_url(key)
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with urllib.request.urlopen(url, timeout=30) as resp:
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return resp.read().decode("utf-8").strip()
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def cos_bucket_url(self) -> str:
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region = str(self.config["cos"]["region"])
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return f"https://{self.bucket}.cos.{region}.myqcloud.com"
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def parse_args() -> argparse.Namespace:
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parser = argparse.ArgumentParser(description="Execute Tencent Cloud operations for app-deploy-platform.")
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parser.add_argument("--config", required=True, help="Path to config/prod.yaml")
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parser.add_argument("--action", required=True, choices=["deploy", "restart", "rollback"])
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parser.add_argument("--service", required=True, help="Service name")
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parser.add_argument("--instance-id", required=True, help="Tencent Cloud CVM instance ID")
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parser.add_argument("--release-id", default="", help="Release ID for deploy or rollback")
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return parser.parse_args()
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def main() -> int:
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args = parse_args()
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config = load_yaml(Path(args.config).resolve())
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operator = CloudOperator(config, args.service, args.instance_id, args.release_id)
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try:
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if args.action == "deploy":
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operator.deploy()
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elif args.action == "restart":
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operator.restart()
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else:
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operator.rollback()
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except TencentCloudSDKException as exc:
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log(f"tencent cloud sdk error: {exc}")
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return 1
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except Exception as exc:
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log(str(exc))
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return 1
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return 0
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if __name__ == "__main__":
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sys.exit(main())
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