Python queue.Queue類代碼示例

    def notifier(self):
        """ Connect to the instruction queue and notify bugyou to create a queue
        for the plugin and start pushing the fedmsg messags.
        """
        queue = Queue('instruction')
        queue.connect()
        for plugin in self.plugins:
            try:
                topic = self.config.get(plugin, 'topic')
            except ConfigParser.NoOptionError:
                log.error("Config does not exists")
            if topic is None:
                log.info("Config does not exists")
                continue

            payload = {
                'type': 'create',
                'queue_name': plugin,
                'topic': topic,
            }
            task = Task(payload)
            queue.enqueue(task)

            if plugin in self.active_plugins:
                Plugin = self.active_plugins[plugin]
                plugin_obj = Plugin()
                plugin_obj.initialize()

def main():
    jobqueue = Queue('jobqueue')
    jobqueue.connect()

    while True:
        task = jobqueue.wait()

        task_data = task.data
        pos, num_images = task_data['pos']

        compose_details = task_data['compose']

        if pos == 1:
            session = init_model()
            compose_id = compose_details['id']
            compose_obj = session.query(ComposeDetails).filter_by(
                compose_id=compose_id).first()
            compose_obj.status = u'r'
            session.commit()


            params = copy.deepcopy(compose_details)
            params.update({'status': 'running'})
            publish_to_fedmsg(topic='compose.running', **params)

        result, running_status = auto_job(task_data)

def main():
    jobqueue = Queue('jobqueue')
    jobqueue.connect()
    while True:
        task = jobqueue.wait()
        log.debug("%s", task.data)
        auto_job(task.data)

def compile(request):
    """
    Enqueue the task to Queue
    """
    filename = request.POST.get('filename', False)
    text = request.POST.get('text', False)

    if filename is False:
        return HttpResponse(json.dumps({'output':'Invalid filename'}),
                            content_type="application/json")

    if text is False:
        return HttpResponse(json.dumps({'output':'Empty file'}),
                            content_type="application/json")

    try:
        queue = Queue('rcc')
        queue.connect()
        task = Task({'filename':filename, 'text':text})
        job = queue.enqueue(task)
    except:
        return HttpResponse(json.dumps({'output':'Error creating Job'}),
                            content_type="application/json")

    while True:
        if job.result is None:
            continue
        break

    return HttpResponse(json.dumps({'output' : job.result}),
                        content_type="application/json")

def produce_jobs(infox):
    """ Queue the jobs into jobqueue
    :args infox: list of dictionaries contains the image url and the buildid
    """
    jobqueue = Queue('jobqueue')
    jobqueue.connect()

    session = init_model()
    timestamp = datetime.datetime.now()
    for info in infox:
        jd = JobDetails(
            taskid=info['buildid'],
            status='q',
            created_on=timestamp,
            user='admin',
            last_updated=timestamp)
        session.add(jd)
        session.commit()

        job_details_id = jd.id
        log.info('Save {jd_id} to database'.format(jd_id=job_details_id))

        info.update({'job_id': jd.id})
        task = Task(info)
        jobqueue.enqueue(task)
        log.info('Enqueue {jd_id} to redis'.format(jd_id=job_details_id))

        publish_to_fedmsg(topic='image.queued', image_url=info['image_url'],
                          image_name=info['name'], status='queued',
                          buildid=info['buildid'], job_id=info['job_id'],
                          release=info['release'])

def main():
    jobqueue = Queue('jobqueue')
    jobqueue.connect()

    while True:
        task = jobqueue.wait()

        task_data = task.data
        pos, num_images = task_data['pos']

        compose_details = task_data['compose']

        if pos == 1:
            session = init_model()
            compose_id = compose_details['id']
            compose_obj = session.query(ComposeDetails).filter_by(
                compose_id=compose_id).first()

            compose_status = compose_obj.status.code

            # Here the check if the compose_status has completed 'c' is for
            # failsafe. This condition is never to be hit. This is to avoid
            # sending message to fedmsg.
            if compose_status in ('r', 'c'):
                log.info("Compose %s already running. Skipping sending to \
                fedmsg" % compose_id)
            else:
                compose_obj.status = u'r'
                session.commit()

                params = copy.deepcopy(compose_details)
                params.update({'status': 'running'})
                publish_to_fedmsg(topic='compose.running', **params)

        result, running_status = auto_job(task_data)

class Worker(object):
    """ Represents the worker process.  Waits for tasks to come in from the
    webapp and then acts on them.
    """

    def __init__(self):
        self.queue = Queue('commits')
        self.queue.connect()
        # TODO -- set both of these with the config file.
        # Use pyramid tools to load config.
        self.sleep_interval = 1
        self.scratch_dir = "/home/threebean/scratch/pep8bot-scratch"
        try:
            os.makedirs(self.scratch_dir)
        except OSError:
            pass  # Assume that the scratch_dir already exists.

    def run(self):
        while True:
            time.sleep(self.sleep_interval)
            print "Waking"
            if self.queue.length == 0:
                continue

            task = self.queue.dequeue()
            data = task.data
            url = data['repository']['url']

            # TODO -- don't clone this url.  But fork and clone our url.

            name = data['repository']['name']
            owner = data['repository']['owner']['name']
            self.working_dir = tempfile.mkdtemp(
                prefix=owner + '-' + name,
                dir=self.scratch_dir,
            )
            print "** Cloning to", self.working_dir
            print sh.git.clone(url, self.working_dir)
            print "** Processing files."
            for root, dirs, files in os.walk(self.working_dir):

                if '.git' in root:
                    continue

                for filename in files:
                    if filename.endswith(".py"):
                        infile = root + "/" + filename
                        print "** Tidying", infile
                        tmpfile = infile + ".bak"
                        script = os.path.expanduser(
                            "~/devel/PythonTidy/PythonTidy.py"
                        )
                        sh.python(script, infile, tmpfile)
                        shutil.move(tmpfile, infile)

            with directory(self.working_dir):
                print sh.pwd()
                print sh.git.status()

    def _get_queue(self, bgroup):
        if not bgroup in self.build_queues:
            q_id = "copr-be-{0}".format(bgroup)
            q = Queue(q_id)
            if not q.connect():
                # As we already connected to jg_control_message, this should
                # be also OK.
                raise Exception("can't connect to redis, should never happen!")
            return q

        return self.build_queues[bgroup]

    def connect_queues(self):
        """
        Connects to the retask queues. One queue per builders group.
        """
        for group in self.opts.build_groups:
            queue = Queue("copr-be-{0}".format(group["id"]))
            queue.connect()

            self.task_queues_by_group[group["name"]] = queue
            for arch in group["archs"]:
                self.task_queues_by_arch[arch] = queue

def produce_jobs(infox):
    """ Queue the jobs into jobqueue
    :args infox: list of dictionaries contains the image url and the buildid
    """
    jobqueue = Queue('jobqueue')
    jobqueue.connect()

    family_mapping = {
        'Cloud_Base': 'b',
        'Atomic': 'a'
    }

    session = init_model()
    timestamp = datetime.datetime.now()
    for info in infox:
        image_name = info['path'].split('.x86_64')[0].split('/')[-1]
        jd = ComposeJobDetails(
            arch=info['arch'],
            compose_id=info['compose']['id'],
            created_on=timestamp,
            family=family_mapping[info['subvariant']],
            image_url=info['absolute_path'],
            last_updated=timestamp,
            release=info['compose']['release'],
            status='q',
            subvariant=info['subvariant'],
            user='admin',
            image_format=info['format'],
            image_type=info['type'],
            image_name=image_name,
        )
        session.add(jd)
        session.commit()

        job_details_id = jd.id
        log.info('Save {jd_id} to database'.format(jd_id=job_details_id))

        info.update({'job_id': jd.id})
        task = Task(info)
        jobqueue.enqueue(task)
        log.info('Enqueue {jd_id} to redis'.format(jd_id=job_details_id))

        publish_to_fedmsg(topic='image.queued',
                          compose_url=info['absolute_path'],
                          compose_id=info['compose']['id'],
                          image_name=image_name,
                          status='queued',
                          job_id=info['job_id'],
                          release=info['compose']['release'],
                          family=jd.family.value,
                          type=info['type'])

        session.close()

def update(data):
    '''
    Updates the git repo for  the given user

    :arg user: github username
    :arg repo: Code repo name
    '''
    queue = Queue('puluupdates')
    if not queue.connect():
        return

    task = Task(data=data, raw=True)
    queue.enqueue(task)

class BasePlugin(object):
    __metaclass__ = abc.ABCMeta

    def __init__(self, *args, **kwargs):
        self.config = load_config(PLUGINS_CONFIG_FILEPATH)
        self.active_services = get_active_services()
        self.services = []

    def initialize(self):
        self.init_retask_connection()
        self.load_services()
        self.init_worker()

    def init_retask_connection(self):
        """ Connect to the retask queue for the plugin """
        self.queue = Queue(self.plugin_name)
        conn = self.queue.connect()
        log.info("Initializing redis conection: %s" % self.plugin_name)
        if not conn:
            log.error("Could not connect to %s queue" % self.plugin_name)
            return False

    def consume(self):
        while True:
            task = self.queue.wait()
            if task:
                log.debug("Processing Message: %s" % task.data['msg']['body']['msg_id'])
                self.process(task.data['msg'])

    def init_worker(self):
        """ Create a process and start consuming the messages """
        process = multiprocessing.Process(target=self.consume)
        process.start()

    def load_services(self):
        """ Load the services for the plugin """
        services = self.config.get(self.plugin_name, 'services').split(',')
        log.info("Start loading services")
        for service in services:
            self.services.append(self.active_services[service].load())
        log.info("Complete loading services %s" % self.services)

    @abc.abstractmethod
    def process(self):
        """ Consumes the messages from retask """
        return

    @abc.abstractmethod
    def do_pagure(self):
        """ Override to do activity related to pagure """
        return

def upload_file():
    if request.method == "POST":
        file = request.files["file"]
        if file and allowed_file(file.filename):
            filename = secure_filename(file.filename)
            file.save(os.path.join(APP.config["UPLOAD_FOLDER"], filename))
            # Now add the information in the queue for processing
            t = Task({"filename": filename})
            queue = Queue("incoming_files")
            queue.connect()
            queue.enqueue(t)
            return "Log uploaded successfully."

    return """

class LogBot(irc.IRCClient):
    """A logging IRC bot."""
    
    nickname = 'pyconsprints'

    def  __init__(self, channel):
        self.chn = '#'+channel
        self.qs_queue = []
        self.logger = None
        self.q = Queue('bug-messages')
        self.q.connect()
        self.channel_admin = ['kushal',]

    def connectionMade(self):
        irc.IRCClient.connectionMade(self)
        self.islogging = False
        self._namescallback = {}

    def connectionLost(self, reason):
        irc.IRCClient.connectionLost(self, reason)
        self.islogging = False

    def signedOn(self):
        """Called when bot has succesfully signed on to server."""
        self.join(self.factory.channel)

    def privmsg(self, user, channel, msg):
        """This will get called when the bot receives a message."""
        user = user.split('!', 1)[0]
        if user == BOTNAME:
            print '[[%s]]' % msg
            task = Task(msg)
            self.q.enqueue(task)
        user_cond = user in self.channel_admin
        if msg == '#masters' and user_cond:
            self.msg(self.chn, "My current masters are: %s" % ",".join(self.channel_admin))
        if msg.startswith('#add:') and user_cond:
            try:
                name = msg.split()[1]
                print name
                self.channel_admin.append(name)
                self.msg(self.chn,'%s is a master now.' % name)
            except Exception, err:
                print err
        if msg.startswith('#test:') and user_cond:
            bugid = msg.split()[1]
            msg = 'dummy/issue%s' % bugid
            task = Task(msg)
            self.q.enqueue(task)

    def init_task_queues(self):
        """
        Connect to the retask.Queue for each group_id. Remove old tasks from queues.
        """
        try:
            for group in self.opts.build_groups:
                group_id = group["id"]
                queue = Queue("copr-be-{0}".format(group_id))
                queue.connect()
                self.task_queues[group_id] = queue
        except ConnectionError:
            raise CoprBackendError(
                "Could not connect to a task queue. Is Redis running?")

        self.clean_task_queues()