Python Structure.get方法代码示例

# 需要导入模块: from structure import Structure [as 别名]
# 或者: from structure.Structure import get [as 别名]
class RootDataRef(DataRef):
    '''A reference to a root of a Firbase.'''

    def __init__(self, url, ssl_options=None):
        '''Construct a new Firebase reference from a full Firebase URL.'''
        self.connection = Connection(url, self, ssl_options=ssl_options)
        self.base_url = url
        self.structure = Structure(self)
        self.subscriptions = {}
        self.history = []
        self.connection.daemon = True
        self.connection.start()
        self._keep_alive()
        atexit.register(self.close)
        DataRef.__init__(self, self, '')

    def _process(self, message):
        '''Process a single incoming message'''

        # This whole thing needs to be rewritten to use all the new information about the protocol
        debug(message)

        # If message type is data
        if message['t'] == 'd':
            data = message['d']
            # If r is in data and set to 1 then it's probably a response 
            # to something we sent like a sub request or an auth token
            if 'r' in data:
                historical_entry = self.history[data['r']-1]
                request = historical_entry['message']
                callbacks = historical_entry['callbacks']
                error = data['b']['s']
    
                if error != 'ok':
                    if error == 'permission_denied':
                        path = request['d']['b']['p']
                        print 'FIREBASE WARNING: on() or once() for %s failed: %s' % (path, error)

                    elif error == 'expired_token' or error == 'invalid_token':
                        print 'FIREBASE WARNING: auth() failed: %s' % (error)

                    else:
                        path = request['d']['b']['p']
                        print 'FIREBASE WARNING: unknown for %s failed: %s' % (path, error)

                    onCancel = callbacks.get('onCancel', None)
                    if not onCancel is None:
                        onCancel(error)

                onComplete = callbacks.get('onComplete', None)
                if not onComplete is None:
                    onComplete(error if error != 'ok' else None)

            # If t is in data then it's the response to the initial connection, maybe
            elif 't' in data:
                pass

            # If a is in data, it's a new data blob for a node, maybe
            elif 'a' in data:
                if data['a'] == 'c':
                    # This type of message is created when we lose permission to read
                    # and it requires some extra effort to implement as we call onCancel
                    # for all effected callbacks, which are any anscestors of the path
                    pass
                else:
                    b_data = data['b']
                    path = b_data['p']
                    path_data = b_data['d']
                    self._store(path, path_data)

        # If message type is... control?
        if message['t'] == 'c':
            pass

    def _store(self, path, path_data):
        '''Store a single path worth of data into the strucutre.'''
        if not path or path[0] != "/":
            path = "/%s" % path
        self.structure.store(path, path_data)

    def _send(self, message, callbacks=None):
        '''Send a single message to Firebase.'''

        historical_entry = {
            'message': message,
            'callbacks': {} if callbacks is None else callbacks
        }

        self.history.append(historical_entry)
        message['d']['r'] = len(self.history)
        self.connection.send(message)

    def _subscribe(self, path, query, callbacks=None):
        '''Subscribe to updates regarding a path'''

        isSubscribed = self._is_subscribed(path, query)

        # A subscription (listen) request takes two main arguments, p (path) and q (query). 
        if not isSubscribed:

#.........这里部分代码省略.........

# 需要导入模块: from structure import Structure [as 别名]
# 或者: from structure.Structure import get [as 别名]
class RootDataRef(DataRef):
    """A reference to a root of a Firbase."""

    def __init__(self, url):
        """Construct a new Firebase reference from a full Firebase URL."""
        self.connection = Connection(url, self)
        self.base_url = url
        self.structure = Structure(self)
        self.subscriptions = {}
        self.history = []
        self.connection.daemon = True
        self.connection.start()
        atexit.register(self.close)
        DataRef.__init__(self, self, "")

    def _process(self, message):
        """Process a single incoming message"""

        # This whole thing needs to be rewritten to use all the new information about the protocol
        debug(message)

        # If message type is data
        if message["t"] == "d":
            data = message["d"]
            # If r is in data and set to 1 then it's probably a response
            # to something we sent like a sub request or an auth token
            if "r" in data:
                historical_entry = self.history[data["r"] - 1]
                request = historical_entry["message"]
                callbacks = historical_entry["callbacks"]
                error = data["b"]["s"]

                if error != "ok":
                    if error == "permission_denied":
                        path = request["d"]["b"]["p"]
                        print "FIREBASE WARNING: on() or once() for %s failed: %s" % (path, error)

                    elif error == "expired_token" or error == "invalid_token":
                        print "FIREBASE WARNING: auth() failed: %s" % (error)

                    else:
                        path = request["d"]["b"]["p"]
                        print "FIREBASE WARNING: unknown for %s failed: %s" % (path, error)

                    onCancel = callbacks.get("onCancel", None)
                    if not onCancel is None:
                        onCancel(error)

                onComplete = callbacks.get("onComplete", None)
                if not onComplete is None:
                    onComplete(error if error != "ok" else None)

            # If t is in data then it's the response to the initial connection, maybe
            elif "t" in data:
                pass

            # If a is in data, it's a new data blob for a node, maybe
            elif "a" in data:
                if data["a"] == "c":
                    # This type of message is created when we lose permission to read
                    # and it requires some extra effort to implement as we call onCancel
                    # for all effected callbacks, which are any anscestors of the path
                    pass
                else:
                    b_data = data["b"]
                    path = b_data["p"]
                    path_data = b_data["d"]
                    self._store(path, path_data)

        # If message type is... control?
        if message["t"] == "c":
            pass

    def _store(self, path, path_data):
        """Store a single path worth of data into the strucutre."""
        if not path or path[0] != "/":
            path = "/%s" % path
        self.structure.store(path, path_data)

    def _send(self, message, callbacks=None):
        """Send a single message to Firebase."""

        historical_entry = {"message": message, "callbacks": {} if callbacks is None else callbacks}

        self.history.append(historical_entry)
        message["d"]["r"] = len(self.history)
        self.connection.send(message)

    def _subscribe(self, path, query, callbacks=None):
        """Subscribe to updates regarding a path"""

        isSubscribed = self._is_subscribed(path, query)

        # A subscription (listen) request takes two main arguments, p (path) and q (query).
        if not isSubscribed:

            message = {"t": "d", "d": {"r": 0, "a": "l", "b": {"p": path}}}

            if not query is None:
                message["d"]["b"]["q"] = query
#.........这里部分代码省略.........