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fa16d389 S |
1 | import asyncio |
2 | import logging | |
fa16d389 | 3 | from datetime import datetime, timezone |
aea49501 | 4 | from threading import Timer |
f937c172 | 5 | import argparse |
fa16d389 | 6 | |
a89844d4 | 7 | import ocpp.v201 |
1a0d2c47 | 8 | import websockets |
fa16d389 | 9 | from ocpp.routing import on |
d4aa9700 JB |
10 | from ocpp.v201.enums import ( |
11 | Action, | |
12 | AuthorizationStatusType, | |
13 | ClearCacheStatusType, | |
14 | RegistrationStatusType, | |
15 | TransactionEventType, | |
f937c172 | 16 | ReportBaseType, |
d4aa9700 | 17 | ) |
fa16d389 S |
18 | |
19 | # Setting up the logging configuration to display debug level messages. | |
20 | logging.basicConfig(level=logging.DEBUG) | |
21 | ||
1a0d2c47 | 22 | |
aea49501 | 23 | class RepeatTimer(Timer): |
d4aa9700 | 24 | """Class that inherits from the Timer class. It will run a |
aea49501 JB |
25 | function at regular intervals.""" |
26 | ||
27 | def run(self): | |
28 | while not self.finished.wait(self.interval): | |
29 | self.function(*self.args, **self.kwargs) | |
30 | ||
31 | ||
fa16d389 | 32 | # Define a ChargePoint class inheriting from the OCPP 2.0.1 ChargePoint class. |
a89844d4 | 33 | class ChargePoint(ocpp.v201.ChargePoint): |
aea49501 | 34 | # Message handlers to receive OCPP messages. |
339f65ad | 35 | @on(Action.BootNotification) |
d6488e8d JB |
36 | async def on_boot_notification(self, charging_station, reason, **kwargs): |
37 | logging.info("Received BootNotification") | |
38 | # Create and return a BootNotification response with the current time, | |
5dd22b9f | 39 | # an interval of 60 seconds, and an accepted status. |
339f65ad | 40 | return ocpp.v201.call_result.BootNotification( |
d6488e8d | 41 | current_time=datetime.now(timezone.utc).isoformat(), |
115f3b17 | 42 | interval=60, |
d4aa9700 | 43 | status=RegistrationStatusType.accepted, |
d6488e8d | 44 | ) |
1a0d2c47 | 45 | |
115f3b17 | 46 | @on(Action.Heartbeat) |
5dd22b9f | 47 | async def on_heartbeat(self, **kwargs): |
115f3b17 | 48 | logging.info("Received Heartbeat") |
d4aa9700 JB |
49 | return ocpp.v201.call_result.Heartbeat( |
50 | current_time=datetime.now(timezone.utc).isoformat() | |
51 | ) | |
115f3b17 | 52 | |
65c0600c | 53 | @on(Action.StatusNotification) |
d4aa9700 JB |
54 | async def on_status_notification( |
55 | self, timestamp, evse_id: int, connector_id: int, connector_status, **kwargs | |
56 | ): | |
65c0600c JB |
57 | logging.info("Received StatusNotification") |
58 | return ocpp.v201.call_result.StatusNotification() | |
59 | ||
5dd22b9f JB |
60 | @on(Action.Authorize) |
61 | async def on_authorize(self, id_token, **kwargs): | |
62 | logging.info("Received Authorize") | |
63 | return ocpp.v201.call_result.Authorize( | |
d4aa9700 | 64 | id_token_info={"status": AuthorizationStatusType.accepted} |
8430af0a | 65 | ) |
5dd22b9f | 66 | |
22c4f1fc | 67 | @on(Action.TransactionEvent) |
d4aa9700 JB |
68 | async def on_transaction_event( |
69 | self, | |
70 | event_type: TransactionEventType, | |
71 | timestamp, | |
72 | trigger_reason, | |
73 | seq_no: int, | |
74 | transaction_info, | |
75 | **kwargs, | |
76 | ): | |
22c4f1fc JB |
77 | match event_type: |
78 | case TransactionEventType.started: | |
79 | logging.info("Received TransactionEvent Started") | |
80 | return ocpp.v201.call_result.TransactionEvent( | |
d4aa9700 | 81 | id_token_info={"status": AuthorizationStatusType.accepted} |
8430af0a | 82 | ) |
22c4f1fc JB |
83 | case TransactionEventType.updated: |
84 | logging.info("Received TransactionEvent Updated") | |
d4aa9700 | 85 | return ocpp.v201.call_result.TransactionEvent(total_cost=10) |
22c4f1fc JB |
86 | case TransactionEventType.ended: |
87 | logging.info("Received TransactionEvent Ended") | |
88 | return ocpp.v201.call_result.TransactionEvent() | |
89 | ||
5dd22b9f | 90 | @on(Action.MeterValues) |
c7f80bf9 | 91 | async def on_meter_values(self, evse_id: int, meter_value, **kwargs): |
5dd22b9f JB |
92 | logging.info("Received MeterValues") |
93 | return ocpp.v201.call_result.MeterValues() | |
94 | ||
f937c172 S |
95 | @on(Action.GetBaseReport) |
96 | async def on_get_base_report(self, request_id: int, report_base: ReportBaseType, **kwargs): | |
97 | logging.info("Received GetBaseReport") | |
98 | return ocpp.v201.call_result.GetBaseReport(status="Accepted") | |
99 | ||
d6488e8d | 100 | # Request handlers to emit OCPP messages. |
a89844d4 JB |
101 | async def send_clear_cache(self): |
102 | request = ocpp.v201.call.ClearCache() | |
103 | response = await self.call(request) | |
104 | ||
105 | if response.status == ClearCacheStatusType.accepted: | |
e1c2dac9 | 106 | logging.info("Cache clearing successful") |
a89844d4 JB |
107 | else: |
108 | logging.info("Cache clearing failed") | |
1a0d2c47 | 109 | |
f937c172 S |
110 | async def send_get_base_report(self): |
111 | logging.info("Executing send_get_base_report...") | |
112 | request = ocpp.v201.call.GetBaseReport(reportBase=ReportBaseType.ConfigurationInventory) # Use correct ReportBaseType | |
113 | try: | |
114 | response = await self.call(request) | |
115 | logging.info("Send GetBaseReport") | |
116 | ||
117 | if response.status == "Accepted": # Adjust depending on the structure of your response | |
118 | logging.info("Send GetBaseReport successful") | |
119 | else: | |
120 | logging.info("Send GetBaseReport failed") | |
121 | except Exception as e: | |
122 | logging.error(f"Send GetBaseReport failed: {str(e)}") | |
123 | logging.info("send_get_base_report done.") | |
124 | ||
125 | # Define argument parser | |
126 | parser = argparse.ArgumentParser(description='OCPP Charge Point Simulator') | |
127 | parser.add_argument('--request', type=str, help='OCPP 2 Command Name') | |
128 | parser.add_argument('--delay', type=int, help='Delay in seconds') | |
129 | parser.add_argument('--period', type=int, help='Period in seconds') | |
130 | ||
131 | args = parser.parse_args() | |
132 | ||
133 | # Function to send OCPP command | |
134 | async def send_ocpp_command(cp, command_name, delay=None, period=None): | |
135 | # If delay is not None, sleep for delay seconds | |
136 | if delay: | |
137 | await asyncio.sleep(delay) | |
138 | ||
139 | # If period is not None, send command repeatedly with period interval | |
140 | if period: | |
141 | while True: | |
142 | if command_name == 'GetBaseReport': | |
143 | logging.info("GetBaseReport parser working") | |
144 | await cp.send_get_base_report() | |
145 | ||
146 | await asyncio.sleep(period) | |
147 | else: | |
148 | if command_name == 'GetBaseReport': | |
149 | await cp.send_get_base_report() | |
150 | ||
fa16d389 S |
151 | |
152 | # Function to handle new WebSocket connections. | |
153 | async def on_connect(websocket, path): | |
d4aa9700 | 154 | """For every new charge point that connects, create a ChargePoint instance and start |
d6488e8d JB |
155 | listening for messages.""" |
156 | try: | |
d4aa9700 | 157 | requested_protocols = websocket.request_headers["Sec-WebSocket-Protocol"] |
d6488e8d JB |
158 | except KeyError: |
159 | logging.info("Client hasn't requested any Subprotocol. Closing Connection") | |
160 | return await websocket.close() | |
1a0d2c47 | 161 | |
d6488e8d JB |
162 | if websocket.subprotocol: |
163 | logging.info("Protocols Matched: %s", websocket.subprotocol) | |
164 | else: | |
d4aa9700 JB |
165 | logging.warning( |
166 | "Protocols Mismatched | Expected Subprotocols: %s," | |
167 | " but client supports %s | Closing connection", | |
168 | websocket.available_subprotocols, | |
169 | requested_protocols, | |
170 | ) | |
d6488e8d | 171 | return await websocket.close() |
1a0d2c47 | 172 | |
d4aa9700 | 173 | charge_point_id = path.strip("/") |
d6488e8d | 174 | cp = ChargePoint(charge_point_id, websocket) |
1a0d2c47 | 175 | |
f937c172 S |
176 | # Check if request argument is specified |
177 | if args.request: | |
178 | asyncio.create_task(send_ocpp_command(cp, args.request, args.delay, args.period)) | |
179 | ||
d6488e8d JB |
180 | # Start the ChargePoint instance to listen for incoming messages. |
181 | await cp.start() | |
1a0d2c47 | 182 | |
fa16d389 S |
183 | |
184 | # Main function to start the WebSocket server. | |
185 | async def main(): | |
d6488e8d JB |
186 | # Create the WebSocket server and specify the handler for new connections. |
187 | server = await websockets.serve( | |
188 | on_connect, | |
d4aa9700 | 189 | "127.0.0.1", # Listen on loopback. |
d6488e8d | 190 | 9000, # Port number. |
d4aa9700 | 191 | subprotocols=["ocpp2.0", "ocpp2.0.1"], # Specify OCPP 2.0.1 subprotocols. |
d6488e8d JB |
192 | ) |
193 | logging.info("WebSocket Server Started") | |
f937c172 S |
194 | |
195 | # Create a ChargePoint instance | |
196 | # websocket = await websockets.connect('ws://localhost:9000') | |
197 | # cp = ChargePoint('test', websocket) | |
198 | ||
199 | # Call send_ocpp_command function | |
200 | # asyncio.create_task(send_ocpp_command(cp, args.request, args.delay, args.period)) | |
201 | ||
d6488e8d JB |
202 | # Wait for the server to close (runs indefinitely). |
203 | await server.wait_closed() | |
1a0d2c47 | 204 | |
fa16d389 S |
205 | |
206 | # Entry point of the script. | |
d4aa9700 | 207 | if __name__ == "__main__": |
d6488e8d JB |
208 | # Run the main function to start the server. |
209 | asyncio.run(main()) |