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How to use _read_pidfiles method in autotest

Best Python code snippet using autotest_python

drone_utility.py

Source:drone_utility.py

...122                               'dark mark; ignoring.' % info)123                    continue124                processes.append(info)125        return processes126    def _read_pidfiles(self, pidfile_paths):127        pidfiles = {}128        for pidfile_path in pidfile_paths:129            if not os.path.exists(pidfile_path):130                continue131            try:132                file_object = open(pidfile_path, 'r')133                pidfiles[pidfile_path] = file_object.read()134                file_object.close()135            except IOError:136                continue137        return pidfiles138    def refresh(self, pidfile_paths):139        """140        pidfile_paths should be a list of paths to check for pidfiles.141        Returns a dict containing:142        * pidfiles: dict mapping pidfile paths to file contents, for pidfiles143        that exist.144        * autoserv_processes: list of dicts corresponding to running autoserv145        processes.  each dict contain pid, pgid, ppid, comm, and args (see146        "man ps" for details).147        * parse_processes: likewise, for parse processes.148        * pidfiles_second_read: same info as pidfiles, but gathered after the149        processes are scanned.150        """151        site_check_parse = utils.import_site_function(152            __file__, 'autotest.scheduler.site_drone_utility',153            'check_parse', lambda x: False)154        results = {155            'pidfiles': self._read_pidfiles(pidfile_paths),156            'autoserv_processes': self._refresh_processes(['autotest-remote']),157            'parse_processes': self._refresh_processes(158                'parse', site_check_parse=site_check_parse),159            'pidfiles_second_read': self._read_pidfiles(pidfile_paths),160        }161        return results162    def kill_process(self, process):163        signal_queue = (signal.SIGCONT, signal.SIGTERM, signal.SIGKILL)164        utils.nuke_pid(process.pid, signal_queue=signal_queue)165    def _convert_old_host_log(self, log_path):166        """167        For backwards compatibility only.  This can safely be removed in the168        future.169        The scheduler used to create files at results/hosts/<hostname>, and170        append all host logs to that file.  Now, it creates directories at171        results/hosts/<hostname>, and places individual timestamped log files172        into that directory.173        This can be a problem the first time the scheduler runs after upgrading....

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