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107 lines
3.1 KiB
Python
107 lines
3.1 KiB
Python
import json
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def initialize():
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"""
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This function is invoked after the script file has been loaded.
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It will be executed only one time.
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"""
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print("Hello World from Sample script.")
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def on_validate_client_connection(context):
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"""
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This function is invoked whenever a client wants to connect. It can be used to validate the connection.
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"""
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print(context)
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mqtt_net_server.write_shared_data(context["client_id"], {"custom_value_1": 1, "custom_value_2": True})
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return
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if context["client_id"] != "test_client":
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context["result"] = "connection_refused_not_authorized"
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return
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if context["username"] != "bud spencer":
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context["result"] = "connection_refused_not_authorized"
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return
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if context["password"] != "secret":
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context["result"] = "connection_refused_not_authorized"
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print(context)
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def on_intercept_subscription(context):
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"""
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This function is invoked whenever a client wants to subscribe to a topic.
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"""
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print("Client '{client_id}' want's to subscribe to topic '{topic}'.".format(client_id=context["client_id"], topic=context["topic"]))
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def on_intercept_application_message(context):
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"""
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This function is invoked for every processed application message. It also allows modifying
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the message or cancel processing at all.
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"""
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client_id = context["client_id"]
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if client_id != None:
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shared_data = mqtt_net_server.read_shared_data(context["client_id"], {})
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print(shared_data)
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if context["topic"] == "topic_with_response":
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json_payload = {
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"hello": "world",
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"x": 1,
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"y": True,
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"z": None
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}
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application_message = {
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"retain": False,
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"topic": "reply",
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"payload": json.dumps(json_payload)
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}
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mqtt_net_server.publish(application_message)
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print("Client '{client_id}' published topic '{topic}'.".format(client_id=context["client_id"], topic=context["topic"]))
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def on_client_connected(event_args):
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"""
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This function is called whenever a client has passed the validation is connected.
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"""
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print("Client '{client_id}' is now connected.".format(client_id=event_args["client_id"]))
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def on_client_disconnected(event_args):
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"""
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This function is called whenever a client has disconnected.
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"""
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print("Client '{client_id}' is now disconnected (type = {type}).".format(client_id=event_args["client_id"], type=event_args["type"]))
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def on_client_subscribed_topic(event_args):
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"""
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This function is called whenever a client has subscribed to a topic (when allowed).
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"""
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print("Client '{client_id}' has subscribed to '{topic}'.".format(client_id=event_args["client_id"], topic=event_args["topic"]))
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def on_client_unsubscribed_topic(event_args):
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"""
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This function is called whenever a client has unsubscribed from a topic.
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"""
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print("Client '{client_id}' has unsubscribed from '{topic}'.".format(client_id=event_args["client_id"], topic=event_args["topic"])) |