cloudflared-mirror/component-tests/test_logging.py

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#!/usr/bin/env python
import json
import os
import subprocess
from util import start_cloudflared, wait_tunnel_ready, send_requests
# Rolling logger rotate log files after 1 MB
rotate_after_size = 1000 * 1000
default_log_file = "cloudflared.log"
expect_message = "Starting tunnel"
def assert_log_to_terminal(cloudflared):
stderr = cloudflared.stderr.read(200)
# cloudflared logs the following when it first starts
# 2021-03-10T12:30:39Z INF Starting tunnel tunnelID=<tunnel ID>
assert expect_message.encode() in stderr, f"{stderr} doesn't contain {expect_message}"
def assert_log_in_file(file):
with open(file, "r") as f:
log = f.read(200)
# cloudflared logs the following when it first starts
# {"level":"info","tunnelID":"<tunnel ID>","time":"2021-03-10T12:21:13Z","message":"Starting tunnel"}
assert expect_message in log, f"{log} doesn't contain {expect_message}"
def assert_json_log(file):
def assert_in_json(j, key):
assert key in j, f"{key} is not in j"
with open(file, "r") as f:
line = f.readline()
json_log = json.loads(line)
assert_in_json(json_log, "level")
assert_in_json(json_log, "time")
assert_in_json(json_log, "message")
def assert_log_to_dir(config, log_dir):
max_batches = 3
batch_requests = 1000
for _ in range(max_batches):
send_requests(config.get_url(),
batch_requests, require_ok=False)
files = os.listdir(log_dir)
if len(files) == 2:
current_log_file_index = files.index(default_log_file)
current_file = log_dir / files[current_log_file_index]
stats = os.stat(current_file)
assert stats.st_size > 0
assert_json_log(current_file)
# One file is the current log file, the other is the rotated log file
rotated_log_file_index = 0 if current_log_file_index == 1 else 1
rotated_file = log_dir / files[rotated_log_file_index]
stats = os.stat(rotated_file)
assert stats.st_size > rotate_after_size
assert_log_in_file(rotated_file)
assert_json_log(current_file)
return
raise Exception(
f"Log file isn't rotated after sending {max_batches * batch_requests} requests")
class TestLogging:
def test_logging_to_terminal(self, tmp_path, component_tests_config):
config = component_tests_config()
with start_cloudflared(tmp_path, config, new_process=True) as cloudflared:
wait_tunnel_ready(tunnel_url=config.get_url())
assert_log_to_terminal(cloudflared)
def test_logging_to_file(self, tmp_path, component_tests_config):
log_file = tmp_path / default_log_file
extra_config = {
# Convert from pathlib.Path to str
"logfile": str(log_file),
}
config = component_tests_config(extra_config)
with start_cloudflared(tmp_path, config, new_process=True, capture_output=False):
wait_tunnel_ready(tunnel_url=config.get_url())
assert_log_in_file(log_file)
assert_json_log(log_file)
def test_logging_to_dir(self, tmp_path, component_tests_config):
log_dir = tmp_path / "logs"
extra_config = {
"loglevel": "debug",
# Convert from pathlib.Path to str
"log-directory": str(log_dir),
}
config = component_tests_config(extra_config)
with start_cloudflared(tmp_path, config, new_process=True, capture_output=False):
wait_tunnel_ready(tunnel_url=config.get_url())
assert_log_to_dir(config, log_dir)