dailz
0fe1530e25
- Add db.go with DB struct: Open/Close/Put/Delete/Get/GetDurableSequence/IsWriteStopped - Add db_test.go with lifecycle, put/get, delete, recovery, and corruption tests - Extract sentinel errors to errkit/ leaf package to break import cycle (wal -> go_kv) - Update wal/sequence.go, wal/writer.go to import errkit instead of root package - Root errors.go re-exports from errkit for backward compatibility Phase 1 Wave 4d complete (T19).
28 lines
1.2 KiB
Go
28 lines
1.2 KiB
Go
// Package errkit defines sentinel errors shared across packages in the go-kv module.
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//
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// These errors live in a leaf package to avoid import cycles: both the root
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// package and sub-packages (wal, memtable, etc.) can import errkit without
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// creating circular dependencies.
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package errkit
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import "errors"
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// ErrCommitUnknown indicates the commit result is indeterminate: the WAL write
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// was attempted but the caller cannot assume the write definitely failed or
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// succeeded. The caller must query the commit state before retrying.
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var ErrCommitUnknown = errors.New("go-kv: commit result unknown")
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// ErrWriteStopped indicates the engine has entered a write-stopped state and
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// rejects all subsequent writes.
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var ErrWriteStopped = errors.New("go-kv: write stopped")
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// ErrSequenceExhausted indicates the sequence number space is exhausted. The
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// engine enters a terminal state requiring database migration or rebuild.
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var ErrSequenceExhausted = errors.New("go-kv: sequence exhausted")
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// ErrWALCorrupted indicates WAL data corruption was detected.
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var ErrWALCorrupted = errors.New("go-kv: WAL corrupted")
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// ErrInvalidConfig indicates an invalid configuration was provided.
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var ErrInvalidConfig = errors.New("go-kv: invalid config")
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