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""" |
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gages api imports api, app, db, auth, and models |
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Endpoints: |
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---------- |
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- **/api/1.0/gages/** - **GET** List all gages |
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- **/api/1.0/gages/<id>** - **GET** Detailed information about gage number *id* |
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- **/api/1.0/gages/<id>/sample** - **POST** new sample data for gage *id* |
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""" |
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from flask import jsonify, request, url_for, current_app |
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from itsdangerous import JSONWebSignatureSerializer, BadSignature |
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from ..models import Gage |
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from .blueprint import api |
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from .errors import unauthorized |
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@api.route('/gages/') |
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def get_gages(): |
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""" |
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List all gages |
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Example response: :: |
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{ "count": 5, |
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"gages": [ |
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{ "id": 2, |
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"location": "Wild River near RT 2 in Gilead Maine", |
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"name": "Wild River at Gilead", |
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"url": "http://riverflo.ws/api/1.0/gages/2" |
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}, |
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{ "id": 3, |
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"location": "Bear River near RT 2 in Newry Maine", |
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"name": "Bear River at Newry", |
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"url": "http://riverflo.ws/api/1.0/gages/3" |
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} |
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], |
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"next": "http://riverflo.ws/api/1.0/gages/?page=2", |
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"prev": null |
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} |
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""" |
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page = request.args.get('page', 1, type=int) |
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pagination = Gage.query.paginate(page, |
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per_page=current_app.config['API_GAGES_PER_PAGE'], # noqa |
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error_out=False) |
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gages = pagination.items |
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prev = None |
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if pagination.has_prev: |
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prev = url_for('.get_gages', page=page-1, _external=True) |
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next_p = None |
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if pagination.has_next: |
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next_p = url_for('.get_gages', page=page+1, _external=True) |
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return jsonify({ |
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'gages': [gage.to_json() for gage in gages], |
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'prev': prev, |
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'next': next_p, |
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'count': pagination.total |
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}) |
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@api.route('/gages/map/') |
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def get_gage_geojson(): |
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gages = Gage.query.all() |
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geojson = { |
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'type': 'FeatureCollection', |
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'features': [gage.geojson() for gage in gages] |
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} |
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return jsonify(geojson) |
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@api.route('/gages/<int:gid>') |
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def get_gage(gid): |
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""" |
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Detailed information about gage *id* |
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Parameters: |
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id (int): Primary id key of a gage |
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Example response: :: |
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{ "html": "http://riverflo.ws/gage/androscoggin-rumford/", |
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"id": 4, |
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"location": null, |
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"name": "Androscoggin River at Rumford", |
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"regions": [ |
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{ "html": "http://riverflo.ws/region/maine/", |
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"id": 4, |
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"name": "Maine", |
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"url": "http://riverflo.ws/api/1.0/regions/4" |
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} |
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], |
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"sensors": [ |
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{ "id": 10, |
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"recent_sample": { |
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"datetime": "Mon, 03 Nov 2014 18:15:00 GMT", |
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"id": 5801, |
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"url": "http://riverflo.ws/api/1.0/samples/5801", |
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"value": 4.32 |
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}, |
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"type": "usgs-height", |
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"url": "http://riverflo.ws/api/1.0/sensors/10" |
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}, |
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{ "id": 11, |
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"recent_sample": { |
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"datetime": "Mon, 03 Nov 2014 18:15:00 GMT", |
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"id": 5866, |
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"url": "http://riverflo.ws/api/1.0/samples/5866", |
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"value": 3230.0 |
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}, |
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"type": "usgs-discharge", |
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"url": "http://riverflo.ws/api/1.0/sensors/11" |
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} |
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], |
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"url": "http://riverflo.ws/api/1.0/gages/4" |
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} |
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""" |
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gage = Gage.query.get_or_404(gid) |
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return jsonify(gage.to_long_json()) |
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@api.route('/gages/<int:gid>/sample', methods=['POST']) |
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def gage_new_samples(gid): |
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""" |
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Submit new samples to gage *id* |
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Parameters: |
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id (int): Primary id key number of a gage |
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Samples are formatted in body of request as a JSON Web Signature using the |
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``Gage.key`` |
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Example sample submitter: :: |
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from itsdangerous import JSONWebSignatureSerializer |
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import requests |
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payload = {'samples':[ |
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{'type':'level', |
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'value':16.7, |
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'datetime': str(datetime.datetime.now()) |
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}, |
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{'type':'amps', |
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'value':367.3, |
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'datetime': str(datetime.datetime.now()) |
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}, |
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{'type':'voltage', |
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'value':14.3, |
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'datetime': str(datetime.datetime.now()) |
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}, |
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{'type':'discharge', |
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'value':480, |
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'datetime': str(datetime.datetime.now()) |
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} |
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], |
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'gage':{ |
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'id':5 |
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}} |
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s = JSONWebSignatureSerializer('<gage.key>') |
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def submit(payload): |
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data = s.dumps(payload) |
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url = "http://riverflo.ws/api/1.0/gages/<gage.id>/sample" |
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r = requests.post(url, data=data) |
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if r.status_code is 200: |
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return True |
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else: |
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return False |
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If the key matches the stored key for the gage id in the url, \ |
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the server will iterate over the samples and add them to the database \ |
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creating new sensors for the gage if a new sample type is found. \ |
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Then the server will return JSON with a status code of 200. |
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Example response: :: |
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{ 'gage': {u'id': 5, |
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'location': 'Androscoggin River downstream of I-95 in Auburn ME', |
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'name': 'Androscoggin River at Auburn', |
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'url': 'http://riverflo.ws/api/1.0/gages/5'}, |
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'result': 'created', |
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'samples': [{'datetime': 'Tue, 04 Nov 2014 20:43:39 GMT', |
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'id': 10781, |
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'url': 'http://riverflo.ws/api/1.0/samples/10781', |
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'value': 16.7}, |
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{'datetime': 'Tue, 04 Nov 2014 20:43:39 GMT', |
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'id': 10782, |
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'url': 'http://riverflo.ws/api/1.0/samples/10782', |
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'value': 367.3}, |
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{'datetime': 'Tue, 04 Nov 2014 20:43:39 GMT', |
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'id': 10783, |
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'url': 'http://riverflo.ws/api/1.0/samples/10783', |
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'value': 14.3}, |
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{'datetime': 'Tue, 04 Nov 2014 20:43:39 GMT', |
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'id': 10784, |
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'url': 'http://riverflo.ws/api/1.0/samples/10784', |
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'value': 480.0}]} |
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If the signature does not match, the server will return JSON \ |
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with a status code of 401 - Unauthorized: :: |
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{'error': 'unauthorized', 'message': 'bad signature'} |
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""" |
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gage = Gage.query.get_or_404(gid) |
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s = JSONWebSignatureSerializer(gage.key) |
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try: |
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req_json = s.loads(request.data) |
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except BadSignature: # If the signature doesn't match |
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return unauthorized('bad signature') |
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except TypeError: # Return unauthorized if no key defined for gage |
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return unauthorized('bad signature') |
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else: |
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samples = req_json['samples'] |
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output = [] |
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print(samples) |
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for sample in samples: |
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result = gage.new_sample(stype=sample['type'].lower(), |
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value=sample['value'], |
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sdatetime=sample['datetime']) |
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result_json = result.to_sensor_json() |
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print(result_json) |
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result_json['sender_id'] = sample['sender_id'] |
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print(result_json) |
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output.append(result_json) |
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return jsonify({ |
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'gage': gage.to_json(), |
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'samples': output, |
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'result': 'created' |
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}) |
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