fix: allow client connect after close #2615
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HanaPearlman
commented
Nov 6, 2020
| @@ -618,6 +617,7 @@ function processError(changeStream: ChangeStream, error: AnyError, callback?: Ca | |||
| // close internal cursor, ignore errors | |||
| cursor.close(); | |||
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| const topology = getTopology(changeStream.parent); | |||
| waitForTopologyConnected(topology, { readPreference: cursor.readPreference }, err => { | |||
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Accessing the topology too early in this function causes failing tests when processError is called after client close.
HanaPearlman
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nbbeeken
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Nov 12, 2020
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This reinstates the work from #2581 now that NODE-2850 is complete.
During
closeof aMongoClient, we remove thetopology. Then, when a client is reconnected, a new topology is created and added to the client. First, this means references toDbs andCollections can be re-used after the reconnect, since they will pull the new topology from the client. Also, when an operation requiring a topology is performed on a closed client, an error is thrown.After this, the work of figuring out how to re-connect a topology is one of the last steps towards having a single, immutable topology associated with a
MongoClient. As in #2581, I skipped this work for now, since the refactor required to re-connect topologies may be too much work for this ticket.NODE-2544