50 lines
1.4 KiB
Python
50 lines
1.4 KiB
Python
# server.py
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#
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# This source file is part of the FoundationDB open source project
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#
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# Copyright 2013-2018 Apple Inc. and the FoundationDB project authors
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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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import os
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from flask import Flask
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import fdb
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app = Flask(__name__)
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fdb.api_version(int(os.getenv('FDB_API_VERSION')))
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db = fdb.open()
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COUNTER_KEY = fdb.tuple.pack(('counter',))
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def _increment_counter(tr):
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counter_value = tr[COUNTER_KEY]
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if counter_value == None:
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counter = 1
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else:
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counter = fdb.tuple.unpack(counter_value)[0] + 1
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tr[COUNTER_KEY] = fdb.tuple.pack((counter,))
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return counter
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@app.route("/counter", methods=['GET'])
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def get_counter():
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counter_value = db[COUNTER_KEY]
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if counter_value == None:
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return '0'
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return str(fdb.tuple.unpack(counter_value)[0])
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@app.route("/counter/increment", methods=['POST'])
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def increment_counter():
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return str(_increment_counter(db))
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