weather_api.py 4.8 KB
Newer Older
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
#!/usr/bin/env python3


"""
Implements API calls related to weather use case

NOTES:
- id and type of message sent should follow convention defined for URN in spreadsheet
https://telecombretagneeu-my.sharepoint.com/:x:/g/personal/federico_sismondi_telecom-bretagne_eu/Ebw_b9iHempGoSPEz__sYCcB_qPu0pwxDAgAeKXFoMu6cA?e=6uuUGD


"""

import os
import json
import requests
import logging

logging.basicConfig(level=logging.INFO)
logger = logging.getLogger()

# config environment
URL_weather_service = 'https://www.prevision-meteo.ch/services/json/carouge'
POST_DATA_PERIOD = int(os.getenv('POST_DATA_PERIOD', default='300'))  # in seconds
URL_BASE = 'http://{}:1026'.format(os.getenv('ORION_HOST', default='localhost'))
dump_keys = ['city_info', 'current_condition']

# see note above about id and type
fiware_data = {
30
31
    'id': 'urn:ngsi-ld:WeatherObservedRaw:carouge_weather_observed_raw',
    'type': 'WeatherObservedRaw'
32
33
34
35
36
}

# build header for POST
http_header_post = {
    'Fiware-Service': 'carouge',
37
    'Fiware-ServicePath': '/Weather/Raw',
38
39
40
41
42
43
44
45
    'Content-Type': 'application/json',
    'Accept': 'application/json',
}

# build header for GET
http_header_get = http_header_post.copy()
http_header_get.pop('Content-Type')

46
logger.info('Config: \n\tPOST_DATA_PERIOD: {} seconds \n\tURL: {}'.format(POST_DATA_PERIOD, URL_BASE))
47
48
49


def get_data_from_weather_service():
50
51
52
    """
    :return: Raw data (json as string)
    """
53
54
55
56
57
58
59
60
61
    logger.info('Querying weather service..')
    try:
        r = requests.get(
            url=URL_weather_service,
            timeout=90,
        )
    except (requests.exceptions.ConnectTimeout, requests.exceptions.ConnectionError):
        logger.info('Could not weather reach service')
        return None
62
63
64
65
66
    try:
        weather_data = {k: v for k, v in r.json().items() if k in dump_keys}
    except json.decoder.JSONDecodeError as e:
        logger.error("Got something that doesnt look like a json: {}".format(r.content))
        return None
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93

    return weather_data


def create_weather_entity_in_platform():
    weather_data = get_data_from_weather_service()
    assert weather_data, 'Weather data not defined'

    logger.info('Creating entity')
    response = None

    try:
        entity = {**weather_data, **fiware_data}

        response = requests.post(
            url=URL_BASE + '/v2/entities?options=keyValues',
            headers=http_header_post,
            json=entity
        )
        logger.info('Got {}'.format(response.status_code))

    except (requests.exceptions.ConnectTimeout, requests.exceptions.ConnectionError):
        logger.error('IoT Platform at {} seems unreachable'.format(URL_BASE))

    if response and response.ok:
        return True
    else:
94
95
96
97
98
        if response:
            logger.error('Operation failed, got message: {}'.format(response.json()))
        else:
            logger.error('Operation failed, no response received')

99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
        return False


def post_weather_data_to_platform():
    weather_data = get_data_from_weather_service()
    assert weather_data, 'Weather data not defined'
    logger.info('Posting weather data to platform')

    response = None

    try:
        entity = {**weather_data}

        with open('weather_raw_last_data.json', encoding='utf-8', mode='w') as f:
            json.dump(
                obj=entity,
                fp=f
            )

        response = requests.put(
            url=URL_BASE + '/v2/entities/{}/attrs?options=keyValues'.format(fiware_data['id']),
            headers=http_header_post,
            json=entity
        )
        logger.info('Got {}'.format(response.status_code))

    except (requests.exceptions.ConnectTimeout, requests.exceptions.ConnectionError):
        logger.error('IoT Platform at {} seems unreachable'.format(URL_BASE))

    if response and response.ok:
        return True
    else:
        logger.error('Operation failed, got message: {}'.format(response.json()))
        return False


def get_all_raw_weather_data_from_platform():
    logger.info('Getting all RAW weather data from platform')

    response = None

    try:

        response = requests.get(
            url=URL_BASE + '/v2/entities/?options=keyValues&type={}'.format(fiware_data['type']),
            headers=http_header_get,
        )
        logger.info('Got {}'.format(response.status_code))

    except (requests.exceptions.ConnectTimeout, requests.exceptions.ConnectionError):
        logger.error('IoT Platform at {} seems unreachable'.format(URL_BASE))

    if response and response.ok:
        return response.json()
    else:
        logger.error('Operation failed, got message: {}'.format(response.json()))
        return False


__all__ = [
    'URL_weather_service',
    'POST_DATA_PERIOD',
    'URL_BASE',
    'post_weather_data_to_platform',
    'get_data_from_weather_service',
    'create_weather_entity_in_platform',
    'get_all_raw_weather_data_from_platform'
]