From 5ab77c745270d7d5c016c1dc7ef2a82533a4b16e Mon Sep 17 00:00:00 2001 From: Florent Le Coz Date: Thu, 17 Jul 2014 14:19:04 +0200 Subject: Rename to slixmpp --- sleekxmpp/plugins/xep_0323/sensordata.py | 723 ------------------------------- 1 file changed, 723 deletions(-) delete mode 100644 sleekxmpp/plugins/xep_0323/sensordata.py (limited to 'sleekxmpp/plugins/xep_0323/sensordata.py') diff --git a/sleekxmpp/plugins/xep_0323/sensordata.py b/sleekxmpp/plugins/xep_0323/sensordata.py deleted file mode 100644 index 2e2f2470..00000000 --- a/sleekxmpp/plugins/xep_0323/sensordata.py +++ /dev/null @@ -1,723 +0,0 @@ -""" - SleekXMPP: The Sleek XMPP Library - Implementation of xeps for Internet of Things - http://wiki.xmpp.org/web/Tech_pages/IoT_systems - Copyright (C) 2013 Sustainable Innovation, Joachim.lindborg@sust.se, bjorn.westrom@consoden.se - This file is part of SleekXMPP. - - See the file LICENSE for copying permission. -""" - -import logging -import time -import datetime -from threading import Thread, Lock, Timer - -from sleekxmpp.plugins.xep_0323.timerreset import TimerReset - -from sleekxmpp.xmlstream import JID -from sleekxmpp.xmlstream.handler import Callback -from sleekxmpp.xmlstream.matcher import StanzaPath -from sleekxmpp.plugins.base import BasePlugin -from sleekxmpp.plugins.xep_0323 import stanza -from sleekxmpp.plugins.xep_0323.stanza import Sensordata - - -log = logging.getLogger(__name__) - - -class XEP_0323(BasePlugin): - - """ - XEP-0323: IoT Sensor Data - - - This XEP provides the underlying architecture, basic operations and data - structures for sensor data communication over XMPP networks. It includes - a hardware abstraction model, removing any technical detail implemented - in underlying technologies. - - Also see - - Configuration Values: - threaded -- Indicates if communication with sensors should be threaded. - Defaults to True. - - Events: - Sensor side - ----------- - Sensordata Event:Req -- Received a request for data - Sensordata Event:Cancel -- Received a cancellation for a request - - Client side - ----------- - Sensordata Event:Accepted -- Received a accept from sensor for a request - Sensordata Event:Rejected -- Received a reject from sensor for a request - Sensordata Event:Cancelled -- Received a cancel confirm from sensor - Sensordata Event:Fields -- Received fields from sensor for a request - This may be triggered multiple times since - the sensor can split up its response in - multiple messages. - Sensordata Event:Failure -- Received a failure indication from sensor - for a request. Typically a comm timeout. - - Attributes: - threaded -- Indicates if command events should be threaded. - Defaults to True. - sessions -- A dictionary or equivalent backend mapping - session IDs to dictionaries containing data - relevant to a request's session. This dictionary is used - both by the client and sensor side. On client side, seqnr - is used as key, while on sensor side, a session_id is used - as key. This ensures that the two will not collide, so - one instance can be both client and sensor. - Sensor side - ----------- - nodes -- A dictionary mapping sensor nodes that are serviced through - this XMPP instance to their device handlers ("drivers"). - Client side - ----------- - last_seqnr -- The last used sequence number (integer). One sequence of - communication (e.g. -->request, <--accept, <--fields) - between client and sensor is identified by a unique - sequence number (unique between the client/sensor pair) - - Methods: - plugin_init -- Overrides base_plugin.plugin_init - post_init -- Overrides base_plugin.post_init - plugin_end -- Overrides base_plugin.plugin_end - - Sensor side - ----------- - register_node -- Register a sensor as available from this XMPP - instance. - - Client side - ----------- - request_data -- Initiates a request for data from one or more - sensors. Non-blocking, a callback function will - be called when data is available. - - """ - - name = 'xep_0323' - description = 'XEP-0323 Internet of Things - Sensor Data' - dependencies = set(['xep_0030']) - stanza = stanza - - - default_config = { - 'threaded': True -# 'session_db': None - } - - def plugin_init(self): - """ Start the XEP-0323 plugin """ - - self.xmpp.register_handler( - Callback('Sensordata Event:Req', - StanzaPath('iq@type=get/req'), - self._handle_event_req)) - - self.xmpp.register_handler( - Callback('Sensordata Event:Accepted', - StanzaPath('iq@type=result/accepted'), - self._handle_event_accepted)) - - self.xmpp.register_handler( - Callback('Sensordata Event:Rejected', - StanzaPath('iq@type=error/rejected'), - self._handle_event_rejected)) - - self.xmpp.register_handler( - Callback('Sensordata Event:Cancel', - StanzaPath('iq@type=get/cancel'), - self._handle_event_cancel)) - - self.xmpp.register_handler( - Callback('Sensordata Event:Cancelled', - StanzaPath('iq@type=result/cancelled'), - self._handle_event_cancelled)) - - self.xmpp.register_handler( - Callback('Sensordata Event:Fields', - StanzaPath('message/fields'), - self._handle_event_fields)) - - self.xmpp.register_handler( - Callback('Sensordata Event:Failure', - StanzaPath('message/failure'), - self._handle_event_failure)) - - self.xmpp.register_handler( - Callback('Sensordata Event:Started', - StanzaPath('message/started'), - self._handle_event_started)) - - # Server side dicts - self.nodes = {}; - self.sessions = {}; - - self.last_seqnr = 0; - self.seqnr_lock = Lock(); - - ## For testning only - self.test_authenticated_from = "" - - def post_init(self): - """ Init complete. Register our features in Serivce discovery. """ - BasePlugin.post_init(self) - self.xmpp['xep_0030'].add_feature(Sensordata.namespace) - self.xmpp['xep_0030'].set_items(node=Sensordata.namespace, items=tuple()) - - def _new_session(self): - """ Return a new session ID. """ - return str(time.time()) + '-' + self.xmpp.new_id() - - def session_bind(self, jid): - logging.debug("setting the Disco discovery for %s" % Sensordata.namespace) - self.xmpp['xep_0030'].add_feature(Sensordata.namespace) - self.xmpp['xep_0030'].set_items(node=Sensordata.namespace, items=tuple()) - - - def plugin_end(self): - """ Stop the XEP-0323 plugin """ - self.sessions.clear(); - self.xmpp.remove_handler('Sensordata Event:Req') - self.xmpp.remove_handler('Sensordata Event:Accepted') - self.xmpp.remove_handler('Sensordata Event:Rejected') - self.xmpp.remove_handler('Sensordata Event:Cancel') - self.xmpp.remove_handler('Sensordata Event:Cancelled') - self.xmpp.remove_handler('Sensordata Event:Fields') - self.xmpp['xep_0030'].del_feature(feature=Sensordata.namespace) - - - # ================================================================= - # Sensor side (data provider) API - - def register_node(self, nodeId, device, commTimeout, sourceId=None, cacheType=None): - """ - Register a sensor/device as available for serving of data through this XMPP - instance. - - The device object may by any custom implementation to support - specific devices, but it must implement the functions: - has_field - request_fields - according to the interfaces shown in the example device.py file. - - Arguments: - nodeId -- The identifier for the device - device -- The device object - commTimeout -- Time in seconds to wait between each callback from device during - a data readout. Float. - sourceId -- [optional] identifying the data source controlling the device - cacheType -- [optional] narrowing down the search to a specific kind of node - """ - self.nodes[nodeId] = {"device": device, - "commTimeout": commTimeout, - "sourceId": sourceId, - "cacheType": cacheType}; - - def _set_authenticated(self, auth=''): - """ Internal testing function """ - self.test_authenticated_from = auth; - - - def _handle_event_req(self, iq): - """ - Event handler for reception of an Iq with req - this is a request. - - Verifies that - - all the requested nodes are available - - at least one of the requested fields is available from at least - one of the nodes - - If the request passes verification, an accept response is sent, and - the readout process is started in a separate thread. - If the verification fails, a reject message is sent. - """ - - seqnr = iq['req']['seqnr']; - error_msg = ''; - req_ok = True; - - # Authentication - if len(self.test_authenticated_from) > 0 and not iq['from'] == self.test_authenticated_from: - # Invalid authentication - req_ok = False; - error_msg = "Access denied"; - - # Nodes - process_nodes = []; - if len(iq['req']['nodes']) > 0: - for n in iq['req']['nodes']: - if not n['nodeId'] in self.nodes: - req_ok = False; - error_msg = "Invalid nodeId " + n['nodeId']; - process_nodes = [n['nodeId'] for n in iq['req']['nodes']]; - else: - process_nodes = self.nodes.keys(); - - # Fields - if we just find one we are happy, otherwise we reject - process_fields = []; - if len(iq['req']['fields']) > 0: - found = False - for f in iq['req']['fields']: - for node in self.nodes: - if self.nodes[node]["device"].has_field(f['name']): - found = True; - break; - if not found: - req_ok = False; - error_msg = "Invalid field " + f['name']; - process_fields = [f['name'] for n in iq['req']['fields']]; - - req_flags = iq['req']._get_flags(); - - request_delay_sec = None - if 'when' in req_flags: - # Timed request - requires datetime string in iso format - # ex. 2013-04-05T15:00:03 - dt = None - try: - dt = datetime.datetime.strptime(req_flags['when'], "%Y-%m-%dT%H:%M:%S") - except ValueError: - req_ok = False; - error_msg = "Invalid datetime in 'when' flag, please use ISO format (i.e. 2013-04-05T15:00:03)." - - if not dt is None: - # Datetime properly formatted - dtnow = datetime.datetime.now() - dtdiff = dt - dtnow - request_delay_sec = dtdiff.seconds + dtdiff.days * 24 * 3600 - if request_delay_sec <= 0: - req_ok = False; - error_msg = "Invalid datetime in 'when' flag, cannot set a time in the past. Current time: " + dtnow.isoformat(); - - if req_ok: - session = self._new_session(); - self.sessions[session] = {"from": iq['from'], "to": iq['to'], "seqnr": seqnr}; - self.sessions[session]["commTimers"] = {}; - self.sessions[session]["nodeDone"] = {}; - - #print("added session: " + str(self.sessions)) - - iq.reply(); - iq['accepted']['seqnr'] = seqnr; - if not request_delay_sec is None: - iq['accepted']['queued'] = "true" - iq.send(block=False); - - self.sessions[session]["node_list"] = process_nodes; - - if not request_delay_sec is None: - # Delay request to requested time - timer = Timer(request_delay_sec, self._event_delayed_req, args=(session, process_fields, req_flags)) - self.sessions[session]["commTimers"]["delaytimer"] = timer; - timer.start(); - return - - if self.threaded: - #print("starting thread") - tr_req = Thread(target=self._threaded_node_request, args=(session, process_fields, req_flags)) - tr_req.start() - #print("started thread") - else: - self._threaded_node_request(session, process_fields, req_flags); - - else: - iq.reply(); - iq['type'] = 'error'; - iq['rejected']['seqnr'] = seqnr; - iq['rejected']['error'] = error_msg; - iq.send(block=False); - - def _threaded_node_request(self, session, process_fields, flags): - """ - Helper function to handle the device readouts in a separate thread. - - Arguments: - session -- The request session id - process_fields -- The fields to request from the devices - flags -- [optional] flags to pass to the devices, e.g. momentary - Formatted as a dictionary like { "flag name": "flag value" ... } - """ - for node in self.sessions[session]["node_list"]: - self.sessions[session]["nodeDone"][node] = False; - - for node in self.sessions[session]["node_list"]: - timer = TimerReset(self.nodes[node]['commTimeout'], self._event_comm_timeout, args=(session, node)); - self.sessions[session]["commTimers"][node] = timer; - #print("Starting timer " + str(timer) + ", timeout: " + str(self.nodes[node]['commTimeout'])) - timer.start(); - self.nodes[node]['device'].request_fields(process_fields, flags=flags, session=session, callback=self._device_field_request_callback); - - def _event_comm_timeout(self, session, nodeId): - """ - Triggered if any of the readout operations timeout. - Sends a failure message back to the client, stops communicating - with the failing device. - - Arguments: - session -- The request session id - nodeId -- The id of the device which timed out - """ - msg = self.xmpp.Message(); - msg['from'] = self.sessions[session]['to']; - msg['to'] = self.sessions[session]['from']; - msg['failure']['seqnr'] = self.sessions[session]['seqnr']; - msg['failure']['error']['text'] = "Timeout"; - msg['failure']['error']['nodeId'] = nodeId; - msg['failure']['error']['timestamp'] = datetime.datetime.now().replace(microsecond=0).isoformat(); - - # Drop communication with this device and check if we are done - self.sessions[session]["nodeDone"][nodeId] = True; - if (self._all_nodes_done(session)): - msg['failure']['done'] = 'true'; - msg.send(); - # The session is complete, delete it - #print("del session " + session + " due to timeout") - del self.sessions[session]; - - def _event_delayed_req(self, session, process_fields, req_flags): - """ - Triggered when the timer from a delayed request fires. - - Arguments: - session -- The request session id - process_fields -- The fields to request from the devices - flags -- [optional] flags to pass to the devices, e.g. momentary - Formatted as a dictionary like { "flag name": "flag value" ... } - """ - msg = self.xmpp.Message(); - msg['from'] = self.sessions[session]['to']; - msg['to'] = self.sessions[session]['from']; - msg['started']['seqnr'] = self.sessions[session]['seqnr']; - msg.send(); - - if self.threaded: - tr_req = Thread(target=self._threaded_node_request, args=(session, process_fields, req_flags)) - tr_req.start() - else: - self._threaded_node_request(session, process_fields, req_flags); - - def _all_nodes_done(self, session): - """ - Checks wheter all devices are done replying to the readout. - - Arguments: - session -- The request session id - """ - for n in self.sessions[session]["nodeDone"]: - if not self.sessions[session]["nodeDone"][n]: - return False; - return True; - - def _device_field_request_callback(self, session, nodeId, result, timestamp_block, error_msg=None): - """ - Callback function called by the devices when they have any additional data. - Composes a message with the data and sends it back to the client, and resets - the timeout timer for the device. - - Arguments: - session -- The request session id - nodeId -- The device id which initiated the callback - result -- The current result status of the readout. Valid values are: - "error" - Readout failed. - "fields" - Contains readout data. - "done" - Indicates that the readout is complete. May contain - readout data. - timestamp_block -- [optional] Only applies when result != "error" - The readout data. Structured as a dictionary: - { - timestamp: timestamp for this datablock, - fields: list of field dictionary (one per readout field). - readout field dictionary format: - { - type: The field type (numeric, boolean, dateTime, timeSpan, string, enum) - name: The field name - value: The field value - unit: The unit of the field. Only applies to type numeric. - dataType: The datatype of the field. Only applies to type enum. - flags: [optional] data classifier flags for the field, e.g. momentary - Formatted as a dictionary like { "flag name": "flag value" ... } - } - } - error_msg -- [optional] Only applies when result == "error". - Error details when a request failed. - """ - if not session in self.sessions: - # This can happend if a session was deleted, like in a cancellation. Just drop the data. - return - - if result == "error": - self.sessions[session]["commTimers"][nodeId].cancel(); - - msg = self.xmpp.Message(); - msg['from'] = self.sessions[session]['to']; - msg['to'] = self.sessions[session]['from']; - msg['failure']['seqnr'] = self.sessions[session]['seqnr']; - msg['failure']['error']['text'] = error_msg; - msg['failure']['error']['nodeId'] = nodeId; - msg['failure']['error']['timestamp'] = datetime.datetime.now().replace(microsecond=0).isoformat(); - - # Drop communication with this device and check if we are done - self.sessions[session]["nodeDone"][nodeId] = True; - if (self._all_nodes_done(session)): - msg['failure']['done'] = 'true'; - # The session is complete, delete it - # print("del session " + session + " due to error") - del self.sessions[session]; - msg.send(); - else: - msg = self.xmpp.Message(); - msg['from'] = self.sessions[session]['to']; - msg['to'] = self.sessions[session]['from']; - msg['fields']['seqnr'] = self.sessions[session]['seqnr']; - - if timestamp_block is not None and len(timestamp_block) > 0: - node = msg['fields'].add_node(nodeId); - ts = node.add_timestamp(timestamp_block["timestamp"]); - - for f in timestamp_block["fields"]: - data = ts.add_data( typename=f['type'], - name=f['name'], - value=f['value'], - unit=f['unit'], - dataType=f['dataType'], - flags=f['flags']); - - if result == "done": - self.sessions[session]["commTimers"][nodeId].cancel(); - self.sessions[session]["nodeDone"][nodeId] = True; - msg['fields']['done'] = 'true'; - if (self._all_nodes_done(session)): - # The session is complete, delete it - # print("del session " + session + " due to complete") - del self.sessions[session]; - else: - # Restart comm timer - self.sessions[session]["commTimers"][nodeId].reset(); - - msg.send(); - - def _handle_event_cancel(self, iq): - """ Received Iq with cancel - this is a cancel request. - Delete the session and confirm. """ - - seqnr = iq['cancel']['seqnr']; - # Find the session - for s in self.sessions: - if self.sessions[s]['from'] == iq['from'] and self.sessions[s]['to'] == iq['to'] and self.sessions[s]['seqnr'] == seqnr: - # found it. Cancel all timers - for n in self.sessions[s]["commTimers"]: - self.sessions[s]["commTimers"][n].cancel(); - - # Confirm - iq.reply(); - iq['type'] = 'result'; - iq['cancelled']['seqnr'] = seqnr; - iq.send(block=False); - - # Delete session - del self.sessions[s] - return - - # Could not find session, send reject - iq.reply(); - iq['type'] = 'error'; - iq['rejected']['seqnr'] = seqnr; - iq['rejected']['error'] = "Cancel request received, no matching request is active."; - iq.send(block=False); - - # ================================================================= - # Client side (data retriever) API - - def request_data(self, from_jid, to_jid, callback, nodeIds=None, fields=None, flags=None): - """ - Called on the client side to initiade a data readout. - Composes a message with the request and sends it to the device(s). - Does not block, the callback will be called when data is available. - - Arguments: - from_jid -- The jid of the requester - to_jid -- The jid of the device(s) - callback -- The callback function to call when data is availble. - - The callback function must support the following arguments: - - from_jid -- The jid of the responding device(s) - result -- The current result status of the readout. Valid values are: - "accepted" - Readout request accepted - "queued" - Readout request accepted and queued - "rejected" - Readout request rejected - "failure" - Readout failed. - "cancelled" - Confirmation of request cancellation. - "started" - Previously queued request is now started - "fields" - Contains readout data. - "done" - Indicates that the readout is complete. - - nodeId -- [optional] Mandatory when result == "fields" or "failure". - The node Id of the responding device. One callback will only - contain data from one device. - timestamp -- [optional] Mandatory when result == "fields". - The timestamp of data in this callback. One callback will only - contain data from one timestamp. - fields -- [optional] Mandatory when result == "fields". - List of field dictionaries representing the readout data. - Dictionary format: - { - typename: The field type (numeric, boolean, dateTime, timeSpan, string, enum) - name: The field name - value: The field value - unit: The unit of the field. Only applies to type numeric. - dataType: The datatype of the field. Only applies to type enum. - flags: [optional] data classifier flags for the field, e.g. momentary. - Formatted as a dictionary like { "flag name": "flag value" ... } - } - - error_msg -- [optional] Mandatory when result == "rejected" or "failure". - Details about why the request is rejected or failed. - "rejected" means that the request is stopped, but note that the - request will continue even after a "failure". "failure" only means - that communication was stopped to that specific device, other - device(s) (if any) will continue their readout. - - nodeIds -- [optional] Limits the request to the node Ids in this list. - fields -- [optional] Limits the request to the field names in this list. - flags -- [optional] Limits the request according to the flags, or sets - readout conditions such as timing. - - Return value: - session -- Session identifier. Client can use this as a reference to cancel - the request. - """ - iq = self.xmpp.Iq(); - iq['from'] = from_jid; - iq['to'] = to_jid; - iq['type'] = "get"; - seqnr = self._get_new_seqnr(); - iq['id'] = seqnr; - iq['req']['seqnr'] = seqnr; - if nodeIds is not None: - for nodeId in nodeIds: - iq['req'].add_node(nodeId); - if fields is not None: - for field in fields: - iq['req'].add_field(field); - - iq['req']._set_flags(flags); - - self.sessions[seqnr] = {"from": iq['from'], "to": iq['to'], "seqnr": seqnr, "callback": callback}; - iq.send(block=False); - - return seqnr; - - def cancel_request(self, session): - """ - Called on the client side to cancel a request for data readout. - Composes a message with the cancellation and sends it to the device(s). - Does not block, the callback will be called when cancellation is - confirmed. - - Arguments: - session -- The session id of the request to cancel - """ - seqnr = session - iq = self.xmpp.Iq(); - iq['from'] = self.sessions[seqnr]['from'] - iq['to'] = self.sessions[seqnr]['to']; - iq['type'] = "get"; - iq['id'] = seqnr; - iq['cancel']['seqnr'] = seqnr; - iq.send(block=False); - - def _get_new_seqnr(self): - """ Returns a unique sequence number (unique across threads) """ - self.seqnr_lock.acquire(); - self.last_seqnr = self.last_seqnr + 1; - self.seqnr_lock.release(); - return str(self.last_seqnr); - - def _handle_event_accepted(self, iq): - """ Received Iq with accepted - request was accepted """ - seqnr = iq['accepted']['seqnr']; - result = "accepted" - if iq['accepted']['queued'] == 'true': - result = "queued" - - callback = self.sessions[seqnr]["callback"]; - callback(from_jid=iq['from'], result=result); - - def _handle_event_rejected(self, iq): - """ Received Iq with rejected - this is a reject. - Delete the session. """ - seqnr = iq['rejected']['seqnr']; - callback = self.sessions[seqnr]["callback"]; - callback(from_jid=iq['from'], result="rejected", error_msg=iq['rejected']['error']); - # Session terminated - del self.sessions[seqnr]; - - def _handle_event_cancelled(self, iq): - """ - Received Iq with cancelled - this is a cancel confirm. - Delete the session. - """ - #print("Got cancelled") - seqnr = iq['cancelled']['seqnr']; - callback = self.sessions[seqnr]["callback"]; - callback(from_jid=iq['from'], result="cancelled"); - # Session cancelled - del self.sessions[seqnr]; - - def _handle_event_fields(self, msg): - """ - Received Msg with fields - this is a data reponse to a request. - If this is the last data block, issue a "done" callback. - """ - seqnr = msg['fields']['seqnr']; - callback = self.sessions[seqnr]["callback"]; - for node in msg['fields']['nodes']: - for ts in node['timestamps']: - fields = []; - for d in ts['datas']: - field_block = {}; - field_block["name"] = d['name']; - field_block["typename"] = d._get_typename(); - field_block["value"] = d['value']; - if not d['unit'] == "": field_block["unit"] = d['unit']; - if not d['dataType'] == "": field_block["dataType"] = d['dataType']; - flags = d._get_flags(); - if not len(flags) == 0: - field_block["flags"] = flags; - fields.append(field_block); - - callback(from_jid=msg['from'], result="fields", nodeId=node['nodeId'], timestamp=ts['value'], fields=fields); - - if msg['fields']['done'] == "true": - callback(from_jid=msg['from'], result="done"); - # Session done - del self.sessions[seqnr]; - - def _handle_event_failure(self, msg): - """ - Received Msg with failure - our request failed - Delete the session. - """ - seqnr = msg['failure']['seqnr']; - callback = self.sessions[seqnr]["callback"]; - callback(from_jid=msg['from'], result="failure", nodeId=msg['failure']['error']['nodeId'], timestamp=msg['failure']['error']['timestamp'], error_msg=msg['failure']['error']['text']); - - # Session failed - del self.sessions[seqnr]; - - def _handle_event_started(self, msg): - """ - Received Msg with started - our request was queued and is now started. - """ - seqnr = msg['started']['seqnr']; - callback = self.sessions[seqnr]["callback"]; - callback(from_jid=msg['from'], result="started"); - - -- cgit v1.2.3