ct/reconciler: integrate the metastore #1
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This alters the reconciler so it builds and uploads proper L1 objects, using the l1::io and l1::object_builder abstractions. A follow-up will change the commit and LRO offset portions of the reconciler to use the metastore and the ctp_stm.
This prepares the reconciler to use the metastore to manager L1 metadata.
The metastore speaks topic ID, so the reconciler needs to.
The metastore may partition objects into separate domains. The reconciler must build objects according to this partitioning, so the metastore metadata building process must be used to coordinate the object building process.
This commits the objects to the metastore once they've been built and uploaded.
This updates the LRO for partitions based on the metastore's response to the add_objects call, which may contain correction to the LRO.
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This change improves the handling of exceptions in the L1 reader in the following ways: 1. It removes try-catch blocks in favor of ss::coroutine::as_future. 2. It ensures that object readers are closed even in exceptional situations (using #1).
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wdberkeley
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This change improves the handling of exceptions in the L1 reader in the following ways: 1. It removes try-catch blocks in favor of ss::coroutine::as_future. 2. It ensures that object readers are closed even in exceptional situations (using #1).
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`ct/l1`: add `meta` and `logger` [CT - Compaction #1]
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This makes the reconciler commit objects to the metastore, and drives the LRO using the metastore's response.
There're still some rough parts, especially around topic id handling and errors, and it can't be well-tested until there's an L1 reader, and I need to (either here or in a follow-up) change LRO handling to use the ctp_stm.
So, for now, it's a draft.
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