Code

Pool store connections#417

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jamadden merged 20 commits intomasterzodb/relstorage:masterfrom issue409zodb/relstorage:issue409Copy head branch name to clipboardSep 9, 2020

+1,496-505

Commits

Commits on Sep 1, 2020

• Checkpoint on refactoring to better manage store connections. Refs #409 and refs #390

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Commits on Sep 2, 2020

• The BlobStorer uses the blobhelper and store_connection of the phase.

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• The Loader shouldn't need the store_connection either.

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Commits on Sep 3, 2020

• Begin pooling the store connection for the storage and its OIDs.

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• Cant rely on instance state being set by on_store_opened, only connection/session state.

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• Minor test fixes

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• Add support for a maximum number of pooled store connections.

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• Maniuplate the count only inside the lock.

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• MySQL: Share the locker, mover, and connmanager

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• checkTL_InterleavedConflictingReadCurrentDeadlock: Don't leave the transaction dangling open.

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• PostgreSQL: Share the locker, mover, and connmanager.

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• Oracle, sqlite: Share the locker, mover and connmanager.

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• Remove unused arg.

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Commits on Sep 4, 2020

• Catch a case where using the good commit lock procs on MySQL didn't raise the right error on failure.

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• Improve cleanup of resources in SharedTPCState.

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• A bit cleaner separation of concerns on cleanup.

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• Some unittesting for the new TPC state management.

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• Decouple the blobhelper from TPC if net needed.

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• Comment cleanup.

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Commits on Sep 9, 2020

• Add basic tests for tpc/vote.py

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