diff options
Diffstat (limited to 'sleekxmpp/plugins/xep_0325')
| -rw-r--r-- | sleekxmpp/plugins/xep_0325/__init__.py | 18 | ||||
| -rw-r--r-- | sleekxmpp/plugins/xep_0325/control.py | 574 | ||||
| -rw-r--r-- | sleekxmpp/plugins/xep_0325/device.py | 125 | ||||
| -rw-r--r-- | sleekxmpp/plugins/xep_0325/stanza/__init__.py | 12 | ||||
| -rw-r--r-- | sleekxmpp/plugins/xep_0325/stanza/base.py | 13 | ||||
| -rw-r--r-- | sleekxmpp/plugins/xep_0325/stanza/control.py | 526 |
6 files changed, 1268 insertions, 0 deletions
diff --git a/sleekxmpp/plugins/xep_0325/__init__.py b/sleekxmpp/plugins/xep_0325/__init__.py new file mode 100644 index 00000000..01c38dce --- /dev/null +++ b/sleekxmpp/plugins/xep_0325/__init__.py @@ -0,0 +1,18 @@ +""" + 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. +""" + +from sleekxmpp.plugins.base import register_plugin + +from sleekxmpp.plugins.xep_0325.control import XEP_0325 +from sleekxmpp.plugins.xep_0325 import stanza + +register_plugin(XEP_0325) + +xep_0325=XEP_0325 diff --git a/sleekxmpp/plugins/xep_0325/control.py b/sleekxmpp/plugins/xep_0325/control.py new file mode 100644 index 00000000..e34eb2c2 --- /dev/null +++ b/sleekxmpp/plugins/xep_0325/control.py @@ -0,0 +1,574 @@ +""" + 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 +from threading import Thread, Timer, Lock + +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_0325 import stanza +from sleekxmpp.plugins.xep_0325.stanza import Control + + +log = logging.getLogger(__name__) + + +class XEP_0325(BasePlugin): + + """ + XEP-0325: IoT Control + + + Actuators are devices in sensor networks that can be controlled through + the network and act with the outside world. In sensor networks and + Internet of Things applications, actuators make it possible to automate + real-world processes. + This plugin implements a mechanism whereby actuators can be controlled + in XMPP-based sensor networks, making it possible to integrate sensors + and actuators of different brands, makes and models into larger + Internet of Things applications. + + Also see <http://xmpp.org/extensions/xep-0325.html> + + Configuration Values: + threaded -- Indicates if communication with sensors should be threaded. + Defaults to True. + + Events: + Sensor side + ----------- + Control Event:DirectSet -- Received a control message + Control Event:SetReq -- Received a control request + + Client side + ----------- + Control Event:SetResponse -- Received a response to a + control request, type result + Control Event:SetResponseError -- Received a response to a + control request, type error + + 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 + ----------- + set_request -- Initiates a control request to modify data in + sensor(s). Non-blocking, a callback function will + be called when the sensor has responded. + set_command -- Initiates a control command to modify data in + sensor(s). Non-blocking. The sensor(s) will not + respond regardless of the result of the command, + so no callback is made. + + """ + + name = 'xep_0325' + description = 'XEP-0325 Internet of Things - Control' + dependencies = set(['xep_0030']) + stanza = stanza + + + default_config = { + 'threaded': True +# 'session_db': None + } + + def plugin_init(self): + """ Start the XEP-0325 plugin """ + + self.xmpp.register_handler( + Callback('Control Event:DirectSet', + StanzaPath('message/set'), + self._handle_direct_set)) + + self.xmpp.register_handler( + Callback('Control Event:SetReq', + StanzaPath('iq@type=set/set'), + self._handle_set_req)) + + self.xmpp.register_handler( + Callback('Control Event:SetResponse', + StanzaPath('iq@type=result/setResponse'), + self._handle_set_response)) + + self.xmpp.register_handler( + Callback('Control Event:SetResponseError', + StanzaPath('iq@type=error/setResponse'), + self._handle_set_response)) + + # 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(Control.namespace) + self.xmpp['xep_0030'].set_items(node=Control.namespace, items=tuple()) + + def _new_session(self): + """ Return a new session ID. """ + return str(time.time()) + '-' + self.xmpp.new_id() + + def plugin_end(self): + """ Stop the XEP-0325 plugin """ + self.sessions.clear(); + self.xmpp.remove_handler('Control Event:DirectSet') + self.xmpp.remove_handler('Control Event:SetReq') + self.xmpp.remove_handler('Control Event:SetResponse') + self.xmpp.remove_handler('Control Event:SetResponseError') + self.xmpp['xep_0030'].del_feature(feature=Control.namespace) + self.xmpp['xep_0030'].set_items(node=Control.namespace, items=tuple()); + + + # ================================================================= + # Sensor side (data provider) API + + def register_node(self, nodeId, device, commTimeout, sourceId=None, cacheType=None): + """ + Register a sensor/device as available for control requests/commands + through this XMPP instance. + + The device object may by any custom implementation to support + specific devices, but it must implement the functions: + has_control_field + set_control_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 _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_set_req(self, iq): + """ + Event handler for reception of an Iq with set req - this is a + control request. + + Verifies that + - all the requested nodes are available + (if no nodes are specified in the request, assume all nodes) + - all the control fields are available from all requested nodes + (if no nodes are specified in the request, assume all nodes) + + If the request passes verification, the control request is passed + to the devices (in a separate thread). + If the verification fails, a setResponse with error indication + is sent. + """ + + error_msg = ''; + req_ok = True; + missing_node = None; + missing_field = None; + + # 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['set']['nodes']) > 0: + for n in iq['set']['nodes']: + if not n['nodeId'] in self.nodes: + req_ok = False; + missing_node = n['nodeId']; + error_msg = "Invalid nodeId " + n['nodeId']; + process_nodes = [n['nodeId'] for n in iq['set']['nodes']]; + else: + process_nodes = self.nodes.keys(); + + # Fields - for control we need to find all in all devices, otherwise we reject + process_fields = []; + if len(iq['set']['datas']) > 0: + for f in iq['set']['datas']: + for node in self.nodes: + if not self.nodes[node]["device"].has_control_field(f['name'], f._get_typename()): + req_ok = False; + missing_field = f['name']; + error_msg = "Invalid field " + f['name']; + break; + process_fields = [(f['name'], f._get_typename(), f['value']) for f in iq['set']['datas']]; + + if req_ok: + session = self._new_session(); + self.sessions[session] = {"from": iq['from'], "to": iq['to'], "seqnr": iq['id']}; + self.sessions[session]["commTimers"] = {}; + self.sessions[session]["nodeDone"] = {}; + # Flag that a reply is exected when we are done + self.sessions[session]["reply"] = True; + + self.sessions[session]["node_list"] = process_nodes; + if self.threaded: + #print("starting thread") + tr_req = Thread(target=self._threaded_node_request, args=(session, process_fields)) + tr_req.start() + #print("started thread") + else: + self._threaded_node_request(session, process_fields); + + else: + iq.reply(); + iq['type'] = 'error'; + iq['setResponse']['responseCode'] = "NotFound"; + if missing_node is not None: + iq['setResponse'].add_node(missing_node); + if missing_field is not None: + iq['setResponse'].add_data(missing_field); + iq['setResponse']['error']['var'] = "Output"; + iq['setResponse']['error']['text'] = error_msg; + iq.send(block=False); + + def _handle_direct_set(self, msg): + """ + Event handler for reception of a Message with set command - this is a + direct control command. + + Verifies that + - all the requested nodes are available + (if no nodes are specified in the request, assume all nodes) + - all the control fields are available from all requested nodes + (if no nodes are specified in the request, assume all nodes) + + If the request passes verification, the control request is passed + to the devices (in a separate thread). + If the verification fails, do nothing. + """ + req_ok = True; + + # Nodes + process_nodes = []; + if len(msg['set']['nodes']) > 0: + for n in msg['set']['nodes']: + if not n['nodeId'] in self.nodes: + req_ok = False; + error_msg = "Invalid nodeId " + n['nodeId']; + process_nodes = [n['nodeId'] for n in msg['set']['nodes']]; + else: + process_nodes = self.nodes.keys(); + + # Fields - for control we need to find all in all devices, otherwise we reject + process_fields = []; + if len(msg['set']['datas']) > 0: + for f in msg['set']['datas']: + for node in self.nodes: + if not self.nodes[node]["device"].has_control_field(f['name'], f._get_typename()): + req_ok = False; + missing_field = f['name']; + error_msg = "Invalid field " + f['name']; + break; + process_fields = [(f['name'], f._get_typename(), f['value']) for f in msg['set']['datas']]; + + if req_ok: + session = self._new_session(); + self.sessions[session] = {"from": msg['from'], "to": msg['to']}; + self.sessions[session]["commTimers"] = {}; + self.sessions[session]["nodeDone"] = {}; + self.sessions[session]["reply"] = False; + + self.sessions[session]["node_list"] = process_nodes; + if self.threaded: + #print("starting thread") + tr_req = Thread(target=self._threaded_node_request, args=(session, process_fields)) + tr_req.start() + #print("started thread") + else: + self._threaded_node_request(session, process_fields); + + + def _threaded_node_request(self, session, process_fields): + """ + Helper function to handle the device control in a separate thread. + + Arguments: + session -- The request session id + process_fields -- The fields to set in the devices. List of tuple format: + (name, datatype, value) + """ + for node in self.sessions[session]["node_list"]: + self.sessions[session]["nodeDone"][node] = False; + + for node in self.sessions[session]["node_list"]: + timer = Timer(self.nodes[node]['commTimeout'], self._event_comm_timeout, args=(session, node)); + self.sessions[session]["commTimers"][node] = timer; + timer.start(); + self.nodes[node]['device'].set_control_fields(process_fields, session=session, callback=self._device_set_command_callback); + + def _event_comm_timeout(self, session, nodeId): + """ + Triggered if any of the control operations timeout. + Stop communicating with the failing device. + If the control command was an Iq request, sends a failure + message back to the client. + + Arguments: + session -- The request session id + nodeId -- The id of the device which timed out + """ + + if self.sessions[session]["reply"]: + # Reply is exected when we are done + iq = self.xmpp.Iq(); + iq['from'] = self.sessions[session]['to']; + iq['to'] = self.sessions[session]['from']; + iq['type'] = "error"; + iq['id'] = self.sessions[session]['seqnr']; + iq['setResponse']['responseCode'] = "OtherError"; + iq['setResponse'].add_node(nodeId); + iq['setResponse']['error']['var'] = "Output"; + iq['setResponse']['error']['text'] = "Timeout."; + iq.send(block=False); + + ## TODO - should we send one timeout per node?? + + # Drop communication with this device and check if we are done + self.sessions[session]["nodeDone"][nodeId] = True; + if (self._all_nodes_done(session)): + # The session is complete, delete it + del self.sessions[session]; + + def _all_nodes_done(self, session): + """ + Checks wheter all devices are done replying to the control command. + + 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_set_command_callback(self, session, nodeId, result, error_field=None, error_msg=None): + """ + Callback function called by the devices when the control command is + complete or failed. + If needed, composes a message with the result and sends it back to the + client. + + Arguments: + session -- The request session id + nodeId -- The device id which initiated the callback + result -- The current result status of the control command. Valid values are: + "error" - Set fields failed. + "ok" - All fields were set. + error_field -- [optional] Only applies when result == "error" + The field name that failed (usually means it is missing) + 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 timeout. Just drop the data. + return + + if result == "error": + self.sessions[session]["commTimers"][nodeId].cancel(); + + if self.sessions[session]["reply"]: + # Reply is exected when we are done + iq = self.xmpp.Iq(); + iq['from'] = self.sessions[session]['to']; + iq['to'] = self.sessions[session]['from']; + iq['type'] = "error"; + iq['id'] = self.sessions[session]['seqnr']; + iq['setResponse']['responseCode'] = "OtherError"; + iq['setResponse'].add_node(nodeId); + if error_field is not None: + iq['setResponse'].add_data(error_field); + iq['setResponse']['error']['var'] = error_field; + iq['setResponse']['error']['text'] = error_msg; + iq.send(block=False); + + # Drop communication with this device and check if we are done + self.sessions[session]["nodeDone"][nodeId] = True; + if (self._all_nodes_done(session)): + # The session is complete, delete it + del self.sessions[session]; + else: + self.sessions[session]["commTimers"][nodeId].cancel(); + + self.sessions[session]["nodeDone"][nodeId] = True; + if (self._all_nodes_done(session)): + if self.sessions[session]["reply"]: + # Reply is exected when we are done + iq = self.xmpp.Iq(); + iq['from'] = self.sessions[session]['to']; + iq['to'] = self.sessions[session]['from']; + iq['type'] = "result"; + iq['id'] = self.sessions[session]['seqnr']; + iq['setResponse']['responseCode'] = "OK"; + iq.send(block=False); + + # The session is complete, delete it + del self.sessions[session]; + + + # ================================================================= + # Client side (data controller) API + + def set_request(self, from_jid, to_jid, callback, fields, nodeIds=None): + """ + Called on the client side to initiade a control request. + Composes a message with the request and sends it to the device(s). + Does not block, the callback will be called when the device(s) + has responded. + + 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 result of the control request. Valid values are: + "OK" - Control request completed successfully + "NotFound" - One or more nodes or fields are missing + "InsufficientPrivileges" - Not authorized. + "Locked" - Field(s) is locked and cannot + be changed at the moment. + "NotImplemented" - Request feature not implemented. + "FormError" - Error while setting with + a form (not implemented). + "OtherError" - Indicates other types of + errors, such as timeout. + Details in the error_msg. + + + nodeId -- [optional] Only applicable when result == "error" + List of node Ids of failing device(s). + + fields -- [optional] Only applicable when result == "error" + List of fields that failed.[optional] Mandatory when result == "rejected" or "failure". + + error_msg -- Details about why the request failed. + + fields -- Fields to set. List of tuple format: (name, typename, value). + nodeIds -- [optional] Limits the request to the node Ids in this list. + """ + iq = self.xmpp.Iq(); + iq['from'] = from_jid; + iq['to'] = to_jid; + seqnr = self._get_new_seqnr(); + iq['id'] = seqnr; + iq['type'] = "set"; + if nodeIds is not None: + for nodeId in nodeIds: + iq['set'].add_node(nodeId); + if fields is not None: + for name, typename, value in fields: + iq['set'].add_data(name=name, typename=typename, value=value); + + self.sessions[seqnr] = {"from": iq['from'], "to": iq['to'], "callback": callback}; + iq.send(block=False); + + def set_command(self, from_jid, to_jid, fields, nodeIds=None): + """ + Called on the client side to initiade a control command. + Composes a message with the set commandand sends it to the device(s). + Does not block. Device(s) will not respond, regardless of result. + + Arguments: + from_jid -- The jid of the requester + to_jid -- The jid of the device(s) + + fields -- Fields to set. List of tuple format: (name, typename, value). + nodeIds -- [optional] Limits the request to the node Ids in this list. + """ + msg = self.xmpp.Message(); + msg['from'] = from_jid; + msg['to'] = to_jid; + msg['type'] = "set"; + if nodeIds is not None: + for nodeId in nodeIds: + msg['set'].add_node(nodeId); + if fields is not None: + for name, typename, value in fields: + msg['set'].add_data(name, typename, value); + + # We won't get any reply, so don't create a session + msg.send(); + + def _handle_set_response(self, iq): + """ Received response from device(s) """ + #print("ooh") + seqnr = iq['id']; + from_jid = str(iq['from']); + result = iq['setResponse']['responseCode']; + nodeIds = [n['name'] for n in iq['setResponse']['nodes']]; + fields = [f['name'] for f in iq['setResponse']['datas']]; + error_msg = None; + + if not iq['setResponse'].find('error') is None and not iq['setResponse']['error']['text'] == "": + error_msg = iq['setResponse']['error']['text']; + + callback = self.sessions[seqnr]["callback"]; + callback(from_jid=from_jid, result=result, nodeIds=nodeIds, fields=fields, error_msg=error_msg); + + diff --git a/sleekxmpp/plugins/xep_0325/device.py b/sleekxmpp/plugins/xep_0325/device.py new file mode 100644 index 00000000..1cb99510 --- /dev/null +++ b/sleekxmpp/plugins/xep_0325/device.py @@ -0,0 +1,125 @@ +""" + 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 datetime + +class Device(object): + """ + Example implementation of a device control object. + + The device object may by any custom implementation to support + specific devices, but it must implement the functions: + has_control_field + set_control_fields + """ + + def __init__(self, nodeId): + self.nodeId = nodeId; + self.control_fields = {}; + + def has_control_field(self, field, typename): + """ + Returns true if the supplied field name exists + and the type matches for control in this device. + + Arguments: + field -- The field name + typename -- The expected type + """ + if field in self.control_fields and self.control_fields[field]["type"] == typename: + return True; + return False; + + def set_control_fields(self, fields, session, callback): + """ + Starts a control setting procedure. Verifies the fields, + sets the data and (if needed) and calls the callback. + + Arguments: + fields -- List of control fields in tuple format: + (name, typename, value) + session -- Session id, only used in the callback as identifier + callback -- Callback function to call when control set is complete. + + The callback function must support the following arguments: + + session -- Session id, as supplied in the + request_fields call + nodeId -- Identifier for this device + result -- The current result status of the readout. + Valid values are: + "error" - Set fields failed. + "ok" - All fields were set. + error_field -- [optional] Only applies when result == "error" + The field name that failed + (usually means it is missing) + error_msg -- [optional] Only applies when result == "error". + Error details when a request failed. + """ + + if len(fields) > 0: + # Check availiability + for name, typename, value in fields: + if not self.has_control_field(name, typename): + self._send_control_reject(session, name, "NotFound", callback) + return False; + + for name, typename, value in fields: + self._set_field_value(name, value) + + callback(session, result="ok", nodeId=self.nodeId); + return True + + def _send_control_reject(self, session, field, message, callback): + """ + Sends a reject to the caller + + Arguments: + session -- Session id, see definition in + set_control_fields function + callback -- Callback function, see definition in + set_control_fields function + """ + callback(session, result="error", nodeId=self.nodeId, error_field=field, error_msg=message); + + def _add_control_field(self, name, typename, value): + """ + Adds a control field to the device + + Arguments: + name -- Name of the field + typename -- Type of the field, one of: + (boolean, color, string, date, dateTime, + double, duration, int, long, time) + value -- Field value + """ + self.control_fields[name] = {"type": typename, "value": value}; + + def _set_field_value(self, name, value): + """ + Set the value of a control field + + Arguments: + name -- Name of the field + value -- New value for the field + """ + if name in self.control_fields: + self.control_fields[name]["value"] = value; + + def _get_field_value(self, name): + """ + Get the value of a control field. Only used for unit testing. + + Arguments: + name -- Name of the field + """ + if name in self.control_fields: + return self.control_fields[name]["value"]; + return None; diff --git a/sleekxmpp/plugins/xep_0325/stanza/__init__.py b/sleekxmpp/plugins/xep_0325/stanza/__init__.py new file mode 100644 index 00000000..746c2033 --- /dev/null +++ b/sleekxmpp/plugins/xep_0325/stanza/__init__.py @@ -0,0 +1,12 @@ +""" + 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. +""" + +from sleekxmpp.plugins.xep_0325.stanza.control import * + diff --git a/sleekxmpp/plugins/xep_0325/stanza/base.py b/sleekxmpp/plugins/xep_0325/stanza/base.py new file mode 100644 index 00000000..1dadcf46 --- /dev/null +++ b/sleekxmpp/plugins/xep_0325/stanza/base.py @@ -0,0 +1,13 @@ +""" + 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. +""" + +from sleekxmpp.xmlstream import ET + +pass diff --git a/sleekxmpp/plugins/xep_0325/stanza/control.py b/sleekxmpp/plugins/xep_0325/stanza/control.py new file mode 100644 index 00000000..2707191f --- /dev/null +++ b/sleekxmpp/plugins/xep_0325/stanza/control.py @@ -0,0 +1,526 @@ +""" + 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. +""" + +from sleekxmpp import Iq, Message +from sleekxmpp.xmlstream import register_stanza_plugin, ElementBase, ET, JID +from re import match + +class Control(ElementBase): + """ Placeholder for the namespace, not used as a stanza """ + namespace = 'urn:xmpp:iot:control' + name = 'control' + plugin_attrib = name + interfaces = set(tuple()) + +class ControlSet(ElementBase): + namespace = 'urn:xmpp:iot:control' + name = 'set' + plugin_attrib = name + interfaces = set(['nodes','datas']) + + def __init__(self, xml=None, parent=None): + ElementBase.__init__(self, xml, parent); + self._nodes = set() + self._datas = set() + + def setup(self, xml=None): + """ + Populate the stanza object using an optional XML object. + + Overrides ElementBase.setup + + Caches item information. + + Arguments: + xml -- Use an existing XML object for the stanza's values. + """ + ElementBase.setup(self, xml) + self._nodes = set([node['nodeId'] for node in self['nodes']]) + self._datas = set([data['name'] for data in self['datas']]) + + def add_node(self, nodeId, sourceId=None, cacheType=None): + """ + Add a new node element. Each item is required to have a + nodeId, but may also specify a sourceId value and cacheType. + + Arguments: + nodeId -- The ID for the node. + sourceId -- [optional] identifying the data source controlling the device + cacheType -- [optional] narrowing down the search to a specific kind of node + """ + if nodeId not in self._nodes: + self._nodes.add((nodeId)) + node = RequestNode(parent=self) + node['nodeId'] = nodeId + node['sourceId'] = sourceId + node['cacheType'] = cacheType + self.iterables.append(node) + return node + return None + + def del_node(self, nodeId): + """ + Remove a single node. + + Arguments: + nodeId -- Node ID of the item to remove. + """ + if nodeId in self._nodes: + nodes = [i for i in self.iterables if isinstance(i, RequestNode)] + for node in nodes: + if node['nodeId'] == nodeId: + self.xml.remove(node.xml) + self.iterables.remove(node) + return True + return False + + def get_nodes(self): + """Return all nodes.""" + nodes = set() + for node in self['substanzas']: + if isinstance(node, RequestNode): + nodes.add(node) + return nodes + + def set_nodes(self, nodes): + """ + Set or replace all nodes. The given nodes must be in a + list or set where each item is a tuple of the form: + (nodeId, sourceId, cacheType) + + Arguments: + nodes -- A series of nodes in tuple format. + """ + self.del_nodes() + for node in nodes: + if isinstance(node, RequestNode): + self.add_node(node['nodeId'], node['sourceId'], node['cacheType']) + else: + nodeId, sourceId, cacheType = node + self.add_node(nodeId, sourceId, cacheType) + + def del_nodes(self): + """Remove all nodes.""" + self._nodes = set() + nodes = [i for i in self.iterables if isinstance(i, RequestNode)] + for node in nodes: + self.xml.remove(node.xml) + self.iterables.remove(node) + + + def add_data(self, name, typename, value): + """ + Add a new data element. + + Arguments: + name -- The name of the data element + typename -- The type of data element + (boolean, color, string, date, dateTime, + double, duration, int, long, time) + value -- The value of the data element + """ + if name not in self._datas: + dataObj = None; + if typename == "boolean": + dataObj = BooleanParameter(parent=self); + elif typename == "color": + dataObj = ColorParameter(parent=self); + elif typename == "string": + dataObj = StringParameter(parent=self); + elif typename == "date": + dataObj = DateParameter(parent=self); + elif typename == "dateTime": + dataObj = DateTimeParameter(parent=self); + elif typename == "double": + dataObj = DoubleParameter(parent=self); + elif typename == "duration": + dataObj = DurationParameter(parent=self); + elif typename == "int": + dataObj = IntParameter(parent=self); + elif typename == "long": + dataObj = LongParameter(parent=self); + elif typename == "time": + dataObj = TimeParameter(parent=self); + + dataObj['name'] = name; + dataObj['value'] = value; + + self._datas.add(name) + self.iterables.append(dataObj) + return dataObj + return None + + def del_data(self, name): + """ + Remove a single data element. + + Arguments: + data_name -- The data element name to remove. + """ + if name in self._datas: + datas = [i for i in self.iterables if isinstance(i, BaseParameter)] + for data in datas: + if data['name'] == name: + self.xml.remove(data.xml) + self.iterables.remove(data) + return True + return False + + def get_datas(self): + """ Return all data elements. """ + datas = set() + for data in self['substanzas']: + if isinstance(data, BaseParameter): + datas.add(data) + return datas + + def set_datas(self, datas): + """ + Set or replace all data elements. The given elements must be in a + list or set where each item is a data element (numeric, string, boolean, dateTime, timeSpan or enum) + + Arguments: + datas -- A series of data elements. + """ + self.del_datas() + for data in datas: + self.add_data(name=data['name'], typename=data._get_typename(), value=data['value']) + + def del_datas(self): + """Remove all data elements.""" + self._datas = set() + datas = [i for i in self.iterables if isinstance(i, BaseParameter)] + for data in datas: + self.xml.remove(data.xml) + self.iterables.remove(data) + + +class RequestNode(ElementBase): + """ Node element in a request """ + namespace = 'urn:xmpp:iot:control' + name = 'node' + plugin_attrib = name + interfaces = set(['nodeId','sourceId','cacheType']) + + +class ControlSetResponse(ElementBase): + namespace = 'urn:xmpp:iot:control' + name = 'setResponse' + plugin_attrib = name + interfaces = set(['responseCode']) + + def __init__(self, xml=None, parent=None): + ElementBase.__init__(self, xml, parent); + self._nodes = set() + self._datas = set() + + def setup(self, xml=None): + """ + Populate the stanza object using an optional XML object. + + Overrides ElementBase.setup + + Caches item information. + + Arguments: + xml -- Use an existing XML object for the stanza's values. + """ + ElementBase.setup(self, xml) + self._nodes = set([node['nodeId'] for node in self['nodes']]) + self._datas = set([data['name'] for data in self['datas']]) + + def add_node(self, nodeId, sourceId=None, cacheType=None): + """ + Add a new node element. Each item is required to have a + nodeId, but may also specify a sourceId value and cacheType. + + Arguments: + nodeId -- The ID for the node. + sourceId -- [optional] identifying the data source controlling the device + cacheType -- [optional] narrowing down the search to a specific kind of node + """ + if nodeId not in self._nodes: + self._nodes.add(nodeId) + node = RequestNode(parent=self) + node['nodeId'] = nodeId + node['sourceId'] = sourceId + node['cacheType'] = cacheType + self.iterables.append(node) + return node + return None + + def del_node(self, nodeId): + """ + Remove a single node. + + Arguments: + nodeId -- Node ID of the item to remove. + """ + if nodeId in self._nodes: + nodes = [i for i in self.iterables if isinstance(i, RequestNode)] + for node in nodes: + if node['nodeId'] == nodeId: + self.xml.remove(node.xml) + self.iterables.remove(node) + return True + return False + + def get_nodes(self): + """Return all nodes.""" + nodes = set() + for node in self['substanzas']: + if isinstance(node, RequestNode): + nodes.add(node) + return nodes + + def set_nodes(self, nodes): + """ + Set or replace all nodes. The given nodes must be in a + list or set where each item is a tuple of the form: + (nodeId, sourceId, cacheType) + + Arguments: + nodes -- A series of nodes in tuple format. + """ + self.del_nodes() + for node in nodes: + if isinstance(node, RequestNode): + self.add_node(node['nodeId'], node['sourceId'], node['cacheType']) + else: + nodeId, sourceId, cacheType = node + self.add_node(nodeId, sourceId, cacheType) + + def del_nodes(self): + """Remove all nodes.""" + self._nodes = set() + nodes = [i for i in self.iterables if isinstance(i, RequestNode)] + for node in nodes: + self.xml.remove(node.xml) + self.iterables.remove(node) + + + def add_data(self, name): + """ + Add a new ResponseParameter element. + + Arguments: + name -- Name of the parameter + """ + if name not in self._datas: + self._datas.add(name) + data = ResponseParameter(parent=self) + data['name'] = name; + self.iterables.append(data) + return data + return None + + def del_data(self, name): + """ + Remove a single ResponseParameter element. + + Arguments: + name -- The data element name to remove. + """ + if name in self._datas: + datas = [i for i in self.iterables if isinstance(i, ResponseParameter)] + for data in datas: + if data['name'] == name: + self.xml.remove(data.xml) + self.iterables.remove(data) + return True + return False + + def get_datas(self): + """ Return all ResponseParameter elements. """ + datas = set() + for data in self['substanzas']: + if isinstance(data, ResponseParameter): + datas.add(data) + return datas + + def set_datas(self, datas): + """ + Set or replace all data elements. The given elements must be in a + list or set of ResponseParameter elements + + Arguments: + datas -- A series of data element names. + """ + self.del_datas() + for data in datas: + self.add_data(name=data['name']) + + def del_datas(self): + """Remove all ResponseParameter elements.""" + self._datas = set() + datas = [i for i in self.iterables if isinstance(i, ResponseParameter)] + for data in datas: + self.xml.remove(data.xml) + self.iterables.remove(data) + + +class Error(ElementBase): + namespace = 'urn:xmpp:iot:control' + name = 'error' + plugin_attrib = name + interfaces = set(['var','text']) + + def get_text(self): + """Return then contents inside the XML tag.""" + return self.xml.text + + def set_text(self, value): + """Set then contents inside the XML tag. + + Arguments: + value -- string + """ + + self.xml.text = value; + return self + + def del_text(self): + """Remove the contents inside the XML tag.""" + self.xml.text = "" + return self + +class ResponseParameter(ElementBase): + """ + Parameter element in ControlSetResponse. + """ + namespace = 'urn:xmpp:iot:control' + name = 'parameter' + plugin_attrib = name + interfaces = set(['name']); + + +class BaseParameter(ElementBase): + """ + Parameter element in SetCommand. This is a base class, + all instances of parameters added to SetCommand must be of types: + BooleanParameter + ColorParameter + StringParameter + DateParameter + DateTimeParameter + DoubleParameter + DurationParameter + IntParameter + LongParameter + TimeParameter + """ + namespace = 'urn:xmpp:iot:control' + name = 'baseParameter' + plugin_attrib = name + interfaces = set(['name','value']); + + def _get_typename(self): + return self.name; + +class BooleanParameter(BaseParameter): + """ + Field data of type boolean. + Note that the value is expressed as a string. + """ + name = 'boolean' + plugin_attrib = name + +class ColorParameter(BaseParameter): + """ + Field data of type color. + Note that the value is expressed as a string. + """ + name = 'color' + plugin_attrib = name + +class StringParameter(BaseParameter): + """ + Field data of type string. + """ + name = 'string' + plugin_attrib = name + +class DateParameter(BaseParameter): + """ + Field data of type date. + Note that the value is expressed as a string. + """ + name = 'date' + plugin_attrib = name + +class DateTimeParameter(BaseParameter): + """ + Field data of type dateTime. + Note that the value is expressed as a string. + """ + name = 'dateTime' + plugin_attrib = name + +class DoubleParameter(BaseParameter): + """ + Field data of type double. + Note that the value is expressed as a string. + """ + name = 'double' + plugin_attrib = name + +class DurationParameter(BaseParameter): + """ + Field data of type duration. + Note that the value is expressed as a string. + """ + name = 'duration' + plugin_attrib = name + +class IntParameter(BaseParameter): + """ + Field data of type int. + Note that the value is expressed as a string. + """ + name = 'int' + plugin_attrib = name + +class LongParameter(BaseParameter): + """ + Field data of type long (64-bit int). + Note that the value is expressed as a string. + """ + name = 'long' + plugin_attrib = name + +class TimeParameter(BaseParameter): + """ + Field data of type time. + Note that the value is expressed as a string. + """ + name = 'time' + plugin_attrib = name + +register_stanza_plugin(Iq, ControlSet) +register_stanza_plugin(Message, ControlSet) + +register_stanza_plugin(ControlSet, RequestNode, iterable=True) + +register_stanza_plugin(ControlSet, BooleanParameter, iterable=True) +register_stanza_plugin(ControlSet, ColorParameter, iterable=True) +register_stanza_plugin(ControlSet, StringParameter, iterable=True) +register_stanza_plugin(ControlSet, DateParameter, iterable=True) +register_stanza_plugin(ControlSet, DateTimeParameter, iterable=True) +register_stanza_plugin(ControlSet, DoubleParameter, iterable=True) +register_stanza_plugin(ControlSet, DurationParameter, iterable=True) +register_stanza_plugin(ControlSet, IntParameter, iterable=True) +register_stanza_plugin(ControlSet, LongParameter, iterable=True) +register_stanza_plugin(ControlSet, TimeParameter, iterable=True) + +register_stanza_plugin(Iq, ControlSetResponse) +register_stanza_plugin(ControlSetResponse, Error) +register_stanza_plugin(ControlSetResponse, RequestNode, iterable=True) +register_stanza_plugin(ControlSetResponse, ResponseParameter, iterable=True) + |