cloudflared-mirror/component-tests/cli.py

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import json
import subprocess
from time import sleep
from setup import get_config_from_file
SINGLE_CASE_TIMEOUT = 600
class CloudflaredCli:
def __init__(self, config, config_path, logger):
self.basecmd = [config.cloudflared_binary, "tunnel"]
if config_path is not None:
self.basecmd += ["--config", str(config_path)]
origincert = get_config_from_file()["origincert"]
if origincert:
self.basecmd += ["--origincert", origincert]
self.logger = logger
def _run_command(self, subcmd, subcmd_name, needs_to_pass=True):
cmd = self.basecmd + subcmd
# timeout limits the time a subprocess can run. This is useful to guard against running a tunnel when
# command/args are in wrong order.
result = run_subprocess(cmd, subcmd_name, self.logger, check=needs_to_pass, capture_output=True, timeout=15)
return result
def list_tunnels(self):
cmd_args = ["list", "--output", "json"]
listed = self._run_command(cmd_args, "list")
return json.loads(listed.stdout)
def get_tunnel_info(self, tunnel_id):
info = self._run_command(["info", "--output", "json", tunnel_id], "info")
return json.loads(info.stdout)
def __enter__(self):
self.basecmd += ["run"]
self.process = subprocess.Popen(self.basecmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
self.logger.info(f"Run cmd {self.basecmd}")
return self.process
def __exit__(self, exc_type, exc_value, exc_traceback):
terminate_gracefully(self.process, self.logger, self.basecmd)
self.logger.debug(f"{self.basecmd} logs: {self.process.stderr.read()}")
def terminate_gracefully(process, logger, cmd):
process.terminate()
process_terminated = wait_for_terminate(process)
if not process_terminated:
process.kill()
logger.warning(f"{cmd}: cloudflared did not terminate within wait period. Killing process. logs: \
stdout: {process.stdout.read()}, stderr: {process.stderr.read()}")
def wait_for_terminate(opened_subprocess, attempts=10, poll_interval=1):
"""
wait_for_terminate polls the opened_subprocess every x seconds for a given number of attempts.
It returns true if the subprocess was terminated and false if it didn't.
"""
for _ in range(attempts):
if _is_process_stopped(opened_subprocess):
return True
sleep(poll_interval)
return False
def _is_process_stopped(process):
return process.poll() is not None
def cert_path():
return get_config_from_file()["origincert"]
class SubprocessError(Exception):
def __init__(self, program, exit_code, cause):
self.program = program
self.exit_code = exit_code
self.cause = cause
def run_subprocess(cmd, cmd_name, logger, timeout=SINGLE_CASE_TIMEOUT, **kargs):
kargs["timeout"] = timeout
try:
result = subprocess.run(cmd, **kargs)
logger.debug(f"{cmd} log: {result.stdout}", extra={"cmd": cmd_name})
return result
except subprocess.CalledProcessError as e:
err = f"{cmd} return exit code {e.returncode}, stderr" + e.stderr.decode("utf-8")
logger.error(err, extra={"cmd": cmd_name, "return_code": e.returncode})
raise SubprocessError(cmd[0], e.returncode, e)
except subprocess.TimeoutExpired as e:
err = f"{cmd} timeout after {e.timeout} seconds, stdout: {e.stdout}, stderr: {e.stderr}"
logger.error(err, extra={"cmd": cmd_name, "return_code": "timeout"})
raise e