初始化内容

third/libcurl/tests/http/testenv/dnsd.py

@@ -0,0 +1,169 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+#***************************************************************************
+#                                  _   _ ____  _
+#  Project                     ___| | | |  _ \| |
+#                             / __| | | | |_) | |
+#                            | (__| |_| |  _ <| |___
+#                             \___|\___/|_| \_\_____|
+#
+# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
+#
+# This software is licensed as described in the file COPYING, which
+# you should have received as part of this distribution. The terms
+# are also available at https://curl.se/docs/copyright.html.
+#
+# You may opt to use, copy, modify, merge, publish, distribute and/or sell
+# copies of the Software, and permit persons to whom the Software is
+# furnished to do so, under the terms of the COPYING file.
+#
+# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+# KIND, either express or implied.
+#
+# SPDX-License-Identifier: curl
+#
+###########################################################################
+#
+import logging
+import os
+import socket
+import subprocess
+import time
+from datetime import datetime, timedelta
+from typing import Dict, List, Optional
+
+from .env import Env
+from .ports import alloc_ports_and_do
+
+log = logging.getLogger(__name__)
+
+
+class Dnsd:
+
+    def __init__(self, env: Env):
+        self.env = env
+        self._cmd = os.path.join(env.build_dir, 'tests/server/servers')
+        self._port = 0
+        self.name = 'dnsd'
+        self._port_skey = 'dnsd'
+        self._port_specs = {
+            'dnsd': socket.SOCK_DGRAM,
+        }
+        self._dnsd_dir = os.path.join(env.gen_dir, self.name)
+        self._log_dir = self._dnsd_dir
+        self._lock_dir = os.path.join(self._dnsd_dir, 'lock')
+        self._log_file = os.path.join(self._log_dir, 'dnsd.log')
+        self._conf_file = os.path.join(self._log_dir, 'dnsd.cmd')
+        self._pid_file = os.path.join(self._log_dir, 'dnsd.pid')
+        self._error_log = os.path.join(self._log_dir, 'dnsd.err.log')
+        self._process = None
+
+        self.clear_logs()
+
+    @property
+    def port(self) -> int:
+        return self._port
+
+    def clear_logs(self):
+        self._rmf(self._log_file)
+        self._rmf(self._error_log)
+
+    def exists(self):
+        return os.path.exists(self._cmd)
+
+    def is_running(self):
+        if self._process:
+            self._process.poll()
+            return self._process.returncode is None
+        return False
+
+    def start_if_needed(self):
+        if not self.is_running():
+            return self.start()
+        return True
+
+    def stop(self, wait_dead=True):
+        if self._process:
+            self._process.terminate()
+            self._process.wait(timeout=2)
+            self._process = None
+            return not wait_dead or True
+        return True
+
+    def restart(self):
+        self.stop()
+        return self.start()
+
+    def initial_start(self):
+        self._mkpath(self._lock_dir)
+
+        def startup(ports: Dict[str, int]) -> bool:
+            self._port = ports[self._port_skey]
+            if self.start():
+                self.env.update_ports(ports)
+                return True
+            self.stop()
+            self._port = 0
+            return False
+
+        return alloc_ports_and_do(self._port_specs, startup,
+                                  self.env.gen_root, max_tries=3)
+
+    def start(self, wait_live=True):
+        assert self._port > 0
+        if self._process:
+            self.stop()
+        self.set_answers()  # empty answers by default
+        self._rmf(self._log_file)
+        args = [
+            self._cmd, 'dnsd',
+            '--port', str(self._port),
+            '--logdir', f'{self._log_dir}',
+            '--logfile', f'{self._log_file}',
+            '--pidfile', f'{self._pid_file}',
+        ]
+        procerr = open(self._error_log, 'a')
+        self._process = subprocess.Popen(args=args, stderr=procerr)
+        if self._process.returncode is not None:
+            return False
+        return self.wait_live(timeout=timedelta(seconds=Env.SERVER_TIMEOUT))
+
+    def wait_live(self, timeout: timedelta):
+        try_until = datetime.now() + timeout
+        while datetime.now() < try_until:
+            if os.path.exists(self._log_file):
+                return True
+            time.sleep(.1)
+        log.error(f"Server still not responding after {timeout}")
+        return False
+
+    def _rmf(self, path):
+        if os.path.exists(path):
+            os.remove(path)
+
+    def _mkpath(self, path):
+        if not os.path.exists(path):
+            os.makedirs(path)
+
+    def set_answers(self, addr_a: Optional[List[str]] = None,
+                    addr_aaaa: Optional[List[str]] = None,
+                    https: Optional[List[str]] = None,
+                    delay_a_ms: int = 0,
+                    delay_aaaa_ms: int = 0,
+                    delay_https_ms: int = 0):
+        conf = []
+        if addr_a:
+            conf.extend([f'A: {addr}' for addr in addr_a])
+        if addr_aaaa:
+            conf.extend([f'AAAA: {addr}' for addr in addr_aaaa])
+        if https:
+            conf.extend([f'HTTPS: {hline}' for hline in https])
+        if delay_a_ms:
+            conf.append(f'Delay-A: {delay_a_ms}')
+        if delay_aaaa_ms:
+            conf.append(f'Delay-AAAA: {delay_aaaa_ms}')
+        if delay_https_ms:
+            conf.append(f'Delay-HTTPS: {delay_https_ms}')
+        conf.append('\n')
+        with open(self._conf_file, 'w') as fd:
+            fd.write("\n".join(conf))