43 lines
1.3 KiB
TypeScript
43 lines
1.3 KiB
TypeScript
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import { Driver, Session } from "neo4j-driver";
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import { EMPTY } from "rxjs"
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import { catchError, finalize, map, mergeMap, concatWith } from "rxjs/operators"
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const neo4j = require("neo4j-driver");
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const driver: Driver = neo4j.driver("bolt://localhost:7687");
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async function setup() {
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const session: Session = driver.session();
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try {
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await session.run('MATCH (n) DETACH DELETE n');
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await session.run('UNWIND RANGE(1, 100) AS x CREATE ()');
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} finally {
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session.close();
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}
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}
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setup().then(() => {
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const rxSession = driver.rxSession({ defaultAccessMode: 'READ' });
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rxSession
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.beginTransaction({ timeout: 50 }) // NOTE: a short timeout
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.pipe(
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mergeMap(tx =>
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tx
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.run('MATCH (),(),(),() RETURN 42 AS thing;') // NOTE: a long query
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.records()
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.pipe(
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catchError(err => { tx.rollback(); throw err; }),
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concatWith(EMPTY.pipe(finalize(() => tx.commit())))
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)
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),
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finalize(() => { rxSession.close(); driver.close() })
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)
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.subscribe({
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next: record => { },
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complete: () => { console.info('complete'); process.exit(1); }, // UNEXPECTED
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error: msg => console.error('Error:', msg.message), // NOTE: expected to error with server side timeout
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})
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})
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