2014-07-13 13:36:47 +00:00
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#!/usr/bin/python
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# -*- coding: utf-8 -*-
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# Copyright 2014 J. Fernando Sánchez Rada - Grupo de Sistemas Inteligentes
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# DIT, UPM
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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'''
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Simple Sentiment Analysis server for EUROSENTIMENT
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'''
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from flask import Blueprint, render_template, request, jsonify, current_app
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import config
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import json
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nif_server = Blueprint("NIF Sentiment Analysis Server", __name__)
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PARAMS = {"input": {"aliases": ["i", "input"],
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"required": True,
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"help": "Input text"
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},
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"informat": {"aliases": ["f", "informat"],
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"required": False,
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"default": "text",
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"options": ["turtle", "text"],
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},
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"intype": {"aliases": ["intype", "t"],
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"required": False,
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"default": "direct",
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"options": ["direct", "url", "file"],
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},
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"outformat": {"aliases": ["outformat", "o"],
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"default": "json-ld",
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"required": False,
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"options": ["json-ld"],
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},
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"language": {"aliases": ["language", "l"],
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"default": None,
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"required": False,
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"options": ["es", "en"],
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},
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"urischeme": {"aliases": ["urischeme", "u"],
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"required": False,
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"default": "RFC5147String",
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"options": "RFC5147String"
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},
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}
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def get_params(req):
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indict = None
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if req.method == 'POST':
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indict = req.form
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if req.method == 'GET':
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indict = req.args
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else:
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raise ValueError("Invalid data")
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outdict = {}
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wrongParams = {}
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for param, options in PARAMS.iteritems():
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for alias in options["aliases"]:
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if alias in indict:
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outdict[param] = indict[alias]
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if param not in outdict:
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if options.get("required", False):
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wrongParams[param] = PARAMS[param]
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else:
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if "default" in options:
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outdict[param] = options["default"]
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else:
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if "options" in PARAMS[param] and \
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outdict[param] not in PARAMS[param]["options"]:
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wrongParams[param] = PARAMS[param]
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if wrongParams:
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message = {"status": "failed", "message": "Missing or invalid parameters"}
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message["parameters"] = outdict
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message["errors"] = {param:error for param, error in wrongParams.iteritems()}
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raise ValueError(json.dumps(message))
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return outdict
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def basic_analysis(params):
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response = {"@context": "http://demos.gsi.dit.upm.es/eurosentiment/static/context.jsonld",
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"analysis": [{
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"@type": "marl:SentimentAnalysis"
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}],
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"entries": []
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}
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if "language" in params:
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response["language"] = params["language"]
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for sentence in params["input"].split("."):
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response["entries"].append({
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"nif:isString": sentence
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})
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return response
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@nif_server.route('/', methods=['POST', 'GET'])
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def home(entries=None):
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try:
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params = get_params(request)
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except ValueError as ex:
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return ex.message
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response = current_app.analyse(params)
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return jsonify(response)
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if __name__ == '__main__':
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from flask import Flask
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app = Flask(__name__)
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app.register_blueprint(nif_server)
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app.debug = config.DEBUG
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app.run()
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