| # |
| # Licensed to the Apache Software Foundation (ASF) under one or more |
| # contributor license agreements. See the NOTICE file distributed with |
| # this work for additional information regarding copyright ownership. |
| # The ASF licenses this file to You under the Apache License, Version 2.0 |
| # (the "License"); you may not use this file except in compliance with |
| # the License. You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| # |
| |
| |
| if __name__ == '__main__': |
| from fastapi import FastAPI |
| import uvicorn |
| import neo4j |
| |
| app = FastAPI() |
| |
| |
| @app.get('/users') |
| async def users(): |
| driver = neo4j.GraphDatabase.driver('bolt://neo4j:7687/') |
| with driver.session(database='neo4j') as session: |
| session.run('MATCH (n: stage) WHERE n.age=$age RETURN n', {'age': 10}) |
| |
| with driver.session(database='neo4j') as session: |
| with session.begin_transaction() as tx: |
| tx.run('MATCH (n: stage) WHERE n.age=$age RETURN n', {'age': 10}) |
| |
| driver.close() |
| |
| driver = neo4j.AsyncGraphDatabase.driver('bolt://neo4j:7687/') |
| async with driver.session(database='neo4j') as session: |
| await session.run('MATCH (n: stage) WHERE n.age=$age RETURN n', {'age': 10}) |
| |
| async def transaction_func(tx, query, params): |
| return await tx.run(query, params) |
| |
| async with driver.session(database='neo4j') as session: |
| await session.execute_read( |
| transaction_func, 'MATCH (n: stage) WHERE n.age=$age RETURN n', {'age': 10}) |
| |
| await driver.close() |
| |
| return 'success' |
| |
| |
| uvicorn.run(app, host='0.0.0.0', port=9091) |