| #!/usr/bin/python |
| # |
| # Copyright 2012 Software Freedom Conservancy |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| import subprocess |
| import time |
| |
| from selenium.common.exceptions import WebDriverException |
| from selenium.webdriver.common import utils |
| |
| class Service(object): |
| """ |
| Object that manages the starting and stopping of PhantomJS / Ghostdriver |
| """ |
| |
| def __init__(self, executable_path, ghostdriver_path, port=0, service_args=None): |
| """ |
| Creates a new instance of the Service |
| |
| :Args: |
| - executable_path : Path to PhantomJS binary |
| - ghostdriver_path : Path to ghostdriver/src/main.js |
| - port : Port the service is running on |
| - service_args : A List of other command line options to pass to PhantomJS |
| """ |
| |
| self.port = port |
| self.path = executable_path |
| self.service_args= service_args |
| if self.port == 0: |
| self.port = utils.free_port() |
| if self.service_args is None: |
| self.service_args = [] |
| self.service_args.insert(0, self.path) |
| self.service_args.append(ghostdriver_path) |
| self.service_args.append("%d" % self.port) |
| self._log = open("ghostdriver.log", 'w') |
| |
| def start(self): |
| """ |
| Starts PhantomJS with GhostDriver. |
| |
| :Exceptions: |
| - WebDriverException : Raised either when it can't start the service |
| or when it can't connect to the service |
| """ |
| try: |
| print "Starting process:", self.path |
| self.process = subprocess.Popen(self.service_args, |
| stdout=self._log, stderr=self._log) |
| except: |
| raise WebDriverException("Unable to start phantomjs with ghostdriver.") |
| count = 0 |
| while not utils.is_connectable(self.port): |
| count += 1 |
| time.sleep(1) |
| if count == 30: |
| raise WebDriverException("Can not connect to GhostDriver") |
| |
| @property |
| def service_url(self): |
| """ |
| Gets the url of the GhostDriver Service |
| """ |
| return "http://localhost:%d/wd/hub" % self.port |
| |
| def stop(self): |
| """ |
| Cleans up the process |
| """ |
| if self._log: |
| self._log.close() |
| self._log = None |
| #If its dead dont worry |
| if self.process is None: |
| return |
| |
| #Tell the Server to properly die in case |
| try: |
| if self.process: |
| self.process.kill() |
| self.process.wait() |
| except WindowsError: |
| # kill may not be available under windows environment |
| pass |