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Feature: Read replica support#476

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crimson-knight merged 27 commits intoamberframework:masteramberframework/granite:masterfrom a-alhusaini:track_last_queryCopy head branch name to clipboardJun 12, 2023

+221-53

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Commits on May 5, 2023

• added variables for tracking time since last write

  a-alhusaini

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Commits on May 7, 2023

• added variables to store reader and writer db connections

  a-alhusaini

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• switched from time.utc to time.monotonic for tracking time since last write

  a-alhusaini

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• Added methods to switch between connections.

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  a-alhusaini

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• added instance variant of switch_to_writer_adapter for use with callback. Simplified callbacks

  a-alhusaini

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• Fixed typo in def switch_to_writer_adapter

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  a-alhusaini

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• added logic to automatically switch to reader adapter

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• functions in querying now dynamically change adapter based on need

  a-alhusaini

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• ensure all methods in query builder that need primary database switch connection

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Commits on May 10, 2023

• added better error message for invalid connections

  a-alhusaini

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• groundwork for replica testing

  a-alhusaini

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• fixed error where mysql tests don't run

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• Granite::Base.adapter class method now actually fetches current adapter if available instead of using first connection in Granite::Connections

  a-alhusaini

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• fixed typo. Invalid adapter_type for pg_with_replica

  a-alhusaini

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• fixed True to true. Added table name to ReplicatedChat.

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Commits on May 11, 2023

• update specs

  kalinon

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• Merge pull request #1 from kalinon/track_last_query

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  a-alhusaini

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• spec updates

  kalinon

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• Merge pull request #2 from kalinon/track_last_query

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Commits on May 15, 2023

• Update .gitignore

  crimson-knight

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Commits on May 20, 2023

• moved connection management logic to seperate module. Fixed bug where there was no switch to reader adapter. Added test for connection switching

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Commits on May 21, 2023

• fixed error where reader connection switch ignored specified wait period. Fixed invalid test.

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• moved default value for connection switch wait period to granite::connections to allow changing it globally

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• moved connection macro to connection management module

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• cleaned up code for fetching first connection

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• finalized syntax for adding new connections to granite::connections

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Commits on May 30, 2023

• optimization: when reader & writer database are the same do not duplicate connection pool

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