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import logging
import json
import os.path
from datetime import datetime, timedelta
from typing import Optional
from werkzeug.exceptions import HTTPException
from flask import Flask, request, Response
from ..config import config, is_development_mode
from ..database import BotsDatabase, SensorsDatabase
from ..util import stringify, format_tb
from ..api.types import BotType, TemperatureSensorLocation, SoundSensorLocation
from ..sound import RecordStorage
db: Optional[BotsDatabase] = None
sensors_db: Optional[SensorsDatabase] = None
app = Flask(__name__)
logger = logging.getLogger(__name__)
class AuthError(Exception):
def __init__(self, message: str):
super().__init__()
self.message = message
# api methods
# -----------
@app.route("/")
def hello():
message = "nothing here, keep lurking"
if is_development_mode():
message += ' (dev mode)'
return message
@app.route('/api/sensors/data/', methods=['GET'])
def sensors_data():
hours = request.args.get('hours', type=int, default=1)
sensor = TemperatureSensorLocation(request.args.get('sensor', type=int))
if hours < 1 or hours > 24:
raise ValueError('invalid hours value')
dt_to = datetime.now()
dt_from = dt_to - timedelta(hours=hours)
data = sensors_db.get_temperature_recordings(sensor, (dt_from, dt_to))
return ok(data)
@app.route('/api/sound_sensors/hits/', methods=['GET'])
def get_sound_sensors_hits():
location = SoundSensorLocation(request.args.get('location', type=int))
after = request.args.get('after', type=int)
kwargs = {}
if after is None:
last = request.args.get('last', type=int)
if last is None:
raise ValueError('you must pass `after` or `last` params')
else:
if not 0 < last < 100:
raise ValueError('invalid last value: must be between 0 and 100')
kwargs['last'] = last
else:
kwargs['after'] = datetime.fromtimestamp(after)
data = db.get_sound_hits(location, **kwargs)
return ok(data)
@app.route('/api/sound_sensors/hits/', methods=['POST'])
def post_sound_sensors_hits():
hits = []
for hit, count in json.loads(request.form.get('hits', type=str)):
if not hasattr(SoundSensorLocation, hit.upper()):
raise ValueError('invalid sensor location')
if count < 1:
raise ValueError(f'invalid count: {count}')
hits.append((SoundSensorLocation[hit.upper()], count))
db.add_sound_hits(hits, datetime.now())
return ok()
@app.route('/api/logs/bot-request/', methods=['POST'])
def log_bot_request():
user_id = request.form.get('user_id', type=int, default=0)
message = request.form.get('message', type=str, default='')
bot = BotType(request.form.get('bot', type=int))
# validate message
if message.strip() == '':
raise ValueError('message can\'t be empty')
# add record to the database
db.add_request(bot, user_id, message)
return ok()
@app.route('/api/logs/openwrt/', methods=['POST'])
def log_openwrt():
logs = request.form.get('logs', type=str, default='')
# validate it
logs = json.loads(logs)
assert type(logs) is list, "invalid json data (list expected)"
lines = []
for line in logs:
assert type(line) is list, "invalid line type (list expected)"
assert len(line) == 2, f"expected 2 items in line, got {len(line)}"
assert type(line[0]) is int, "invalid line[0] type (int expected)"
assert type(line[1]) is str, "invalid line[1] type (str expected)"
lines.append((
datetime.fromtimestamp(line[0]),
line[1]
))
db.add_openwrt_logs(lines)
return ok()
@app.route('/api/recordings/list/', methods=['GET'])
def recordings_list():
extended = request.args.get('extended', type=bool, default=False)
node = request.args.get('node', type=str)
root = os.path.join(config['recordings']['directory'], node)
if not os.path.isdir(root):
raise ValueError(f'invalid node {node}: no such directory')
storage = RecordStorage(root)
files = storage.getfiles(as_objects=extended)
if extended:
files = list(map(lambda file: file.__dict__(), files))
return ok(files)
# internal functions
# ------------------
def ok(data=None) -> Response:
response = {'result': 'ok'}
if data is not None:
response['data'] = data
return Response(stringify(response),
mimetype='application/json')
def err(e) -> Response:
error = {
'type': e.__class__.__name__,
'message': e.message if hasattr(e, 'message') else str(e)
}
if is_development_mode():
tb = format_tb(e)
if tb:
error['stacktrace'] = tb
data = {
'result': 'error',
'error': error
}
return Response(stringify(data), mimetype='application/json')
def get_token() -> Optional[str]:
name = 'X-Token'
if name in request.headers:
return request.headers[name]
token = request.args.get('token', default='', type=str)
if token != '':
return token
return None
@app.errorhandler(Exception)
def handle_exception(e):
if isinstance(e, HTTPException):
return e
return err(e), 500
@app.before_request
def validate_token() -> None:
if request.path.startswith('/api/') and not is_development_mode():
token = get_token()
if not token:
raise AuthError(f'token is missing')
if token != config['api']['token']:
raise AuthError('invalid token')
def get_app():
global db, sensors_db
config.load('web_api')
app.config.from_mapping(**config['flask'])
db = BotsDatabase()
sensors_db = SensorsDatabase()
return app
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