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Catalin Ioana
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2 parents eb87042 + 2646ca1 commit 4839736

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‎examples/OTA-lorawan/LoraServer.py

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#!/usr/bin/env python3
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import urllib.request
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import binascii
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import base64
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import os
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import json
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import config
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login_payload = {
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"password": "string",
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"username": "string"
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}
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mcGroup_payload = {
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"multicastGroup": {
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"dr": 0,
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"fCnt": 0,
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"frequency": 0,
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"groupType": "CLASS_C",
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"id": "string",
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"mcAddr": "string",
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"mcAppSKey": "string",
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"mcNwkSKey": "string",
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"name": "string",
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"pingSlotPeriod": 0,
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"serviceProfileID": "string"
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}
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}
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mcQueue_payload = {
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"multicastQueueItem": {
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"data": "string",
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"fCnt": 0,
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"fPort": 1,
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"multicastGroupID": "string"
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}
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}
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mcAddDevice_payload = {
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"devEUI": "string",
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"multicastGroupID": "string"
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}
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class LoraServerClient:
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def __init__(self):
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self.server = config.LORASERVER_URL
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self.port = config.LORASERVER_API_PORT
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self.username = config.LORASERVER_USER
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self.passwd = config.LORASERVER_PASS
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def login(self):
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url = self.server + ':' + str(self.port) + '/api/internal/login'
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login_payload["password"] = self.passwd
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login_payload["username"] = self.username
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payload = bytes(json.dumps(login_payload),'utf-8')
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try:
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r = urllib.request.Request(url, data= payload, method= 'POST')
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r.add_header("Content-Type", "application/json")
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r.add_header("Accept", "application/json")
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with urllib.request.urlopen(r) as f:
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return json.loads(f.read().decode('utf-8'))['jwt']
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except Exception as ex:
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print("Error getting the jwt: {}".format(ex))
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return None
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def parse_service_profile_list(self, response, profile_name):
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try:
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json_obj = json.loads(response)
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for sp_obj in json_obj["result"]:
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if sp_obj["name"] == profile_name:
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return sp_obj["id"]
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except Exception as ex:
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print("Error parsing service profile list: {}".format(ex))
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return None
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def request_service_profile_id(self, profile_name, jwt):
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url = self.server + ':' + str(self.port) + '/api/service-profiles?limit=100'
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try:
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r = urllib.request.Request(url, method= 'GET')
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r.add_header("Accept", "application/json")
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r.add_header("Grpc-Metadata-Authorization", "Bearer " + jwt)
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with urllib.request.urlopen(r) as f:
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return self.parse_service_profile_list(f.read().decode('utf-8'), profile_name)
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except Exception as ex:
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print("Error getting service profile id: {}".format(ex))
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return None
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def create_multicast_group(self, dr, freq, group_name, serviceProfileID, jwt):
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group_id = self.generate_random_id()
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mcAddr = self.generate_randon_addr()
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mcAppSKey = self.generate_random_key()
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mcNwkSKey = self.generate_random_key()
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url = self.server + ':' + str(self.port) + '/api/multicast-groups'
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mcGroup_payload["multicastGroup"]["dr"] = dr
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mcGroup_payload["multicastGroup"]["frequency"] = freq
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mcGroup_payload["multicastGroup"]["id"] = group_id.decode("utf-8")
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mcGroup_payload["multicastGroup"]["mcAddr"] = mcAddr.decode("utf-8")
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mcGroup_payload["multicastGroup"]["mcAppSKey"] = mcAppSKey.decode("utf-8")
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mcGroup_payload["multicastGroup"]["mcNwkSKey"] = mcNwkSKey.decode("utf-8")
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mcGroup_payload["multicastGroup"]["name"] = group_name
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mcGroup_payload["multicastGroup"]["serviceProfileID"] = serviceProfileID
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payload = bytes(json.dumps(mcGroup_payload),'utf-8')
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try:
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r = urllib.request.Request(url, data= payload, method= 'POST')
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r.add_header("Content-Type", "application/json")
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r.add_header("Accept", "application/json")
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r.add_header("Grpc-Metadata-Authorization", "Bearer " + jwt)
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with urllib.request.urlopen(r) as f:
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resp = f.read().decode('utf-8')
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if '"id":' in resp:
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multicast_id = json.loads(resp)["id"]
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return (multicast_id, mcAddr, mcNwkSKey, mcAppSKey)
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else:
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return None
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except Exception as ex:
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print("Error creating multicast data: {}".format(ex))
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return None
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def delete_multicast_group(self, group_id):
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url = self.server + ':' + str(self.port) + '/api/multicast-groups/' + group_id
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try:
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r = urllib.request.Request(url, method = 'DELETE')
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with urllib.request.urlopen(r) as f:
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return f.getcode() == 200
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except Exception as ex:
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print("Error deleting multicast group: {}".format(ex))
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return False
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def add_device_multicast_group(self, devEUI, group_id, jwt):
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url = self.server + ':' + str(self.port) + '/api/multicast-groups/' + group_id + '/devices'
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mcAddDevice_payload["devEUI"] = devEUI
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mcAddDevice_payload["multicastGroupID"] = group_id
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payload = json.dumps(mcAddDevice_payload).encode('utf-8')
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try:
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r = urllib.request.Request(url, data= payload, method= 'POST')
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r.add_header("Content-Type", "application/json")
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r.add_header("Accept", "application/json")
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r.add_header("Grpc-Metadata-Authorization", "Bearer " + jwt)
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with urllib.request.urlopen(r) as f:
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return f.getcode() == 200
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except Exception as ex:
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print("Error adding device to multicast group: {}".format(ex))
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return False
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def request_multicast_keys(self, group_id, jwt):
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url = self.server + ':' + str(self.port) + '/api/multicast-groups/' + group_id
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try:
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r = urllib.request.Request(url, method= 'GET')
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r.add_header("Accept", "application/json")
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r.add_header("Grpc-Metadata-Authorization", "Bearer " + jwt)
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with urllib.request.urlopen(r) as f:
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resp = f.read().decode('utf-8')
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if "mcNwkSKey" in resp:
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json_resp = json.loads(resp)["multicastGroup"]
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return (json_resp["mcAddr"], json_resp["mcNwkSKey"], json_resp["mcAppSKey"])
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else:
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return None
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except Exception as ex:
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print("Error getting multicast keys: {}".format(ex))
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return None
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def generate_randon_addr(self):
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return binascii.hexlify(os.urandom(4))
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def generate_random_key(self):
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return binascii.hexlify(os.urandom(16))
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def generate_random_id(self):
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return binascii.hexlify(os.urandom(4)) + b'-' + binascii.hexlify(os.urandom(2)) + b'-' + binascii.hexlify(os.urandom(2)) \
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+ b'-' + binascii.hexlify(os.urandom(2)) + b'-' + binascii.hexlify(os.urandom(6))
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def multicast_queue_length(self, jwt, multicast_group):
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url = self.server + ':' + str(self.port) + '/api/multicast-groups/' + multicast_group + '/queue'
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try:
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r = urllib.request.Request(url, method= 'GET')
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r.add_header("Content-Type", "application/json")
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r.add_header("Grpc-Metadata-Authorization", "Bearer " + jwt)
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with urllib.request.urlopen(r) as f:
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resp = f.read().decode('utf-8')
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if "multicastQueueItems" in resp:
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print(resp)
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json_resp = json.loads(resp)["multicastQueueItems"]
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print("Len: {}".format(len(json_resp)))
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return len(json_resp)
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else:
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return -1
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except Exception as ex:
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print("Error getting multicast queue length: {}".format(ex))
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return -1
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def send(self, jwt, multicast_group, data):
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url = self.server + ':' + str(self.port) + '/api/multicast-groups/' + multicast_group + '/queue'
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mcQueue_payload["multicastQueueItem"]["data"] = base64.b64encode(data).decode("utf-8")
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mcQueue_payload["multicastQueueItem"]["multicastGroupID"] = multicast_group
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payload = bytes(json.dumps(mcQueue_payload),'utf-8')
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try:
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r = urllib.request.Request(url, data= payload, method= 'POST')
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r.add_header("Content-Type", "application/json")
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r.add_header("Accept", "application/json")
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r.add_header("Grpc-Metadata-Authorization", "Bearer " + jwt)
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with urllib.request.urlopen(r) as f:
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return f.getcode() == 200
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except Exception as ex:
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print("Error sending multicast data: {}".format(ex))
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return False
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‎examples/OTA-lorawan/README.md

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Coming soon
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‎examples/OTA-lorawan/config.py

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#!/usr/bin/env python3
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#LORASERVER configuration
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LORASERVER_IP = "127.0.0.1"
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LORASERVER_URL = 'http://localhost'
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LORASERVER_MQTT_PORT = 1883
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LORASERVER_API_PORT = 8080
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LORASERVER_USER = 'admin'
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LORASERVER_PASS = 'admin'
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LORASERVER_SERVICE_PROFILE = 'multicast_sp'
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LORASERVER_DOWNLINK_DR = 5
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LORASERVER_DOWNLINK_FREQ = 869525000
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#update configuration
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UPDATE_DELAY = 300
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