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7611128e57
issue: #33285 - add adaptor to implement walimpls into wal interface. - implement timetick sorted and filtering scanner. - add test for wal. --------- Signed-off-by: chyezh <chyezh@outlook.com>
32 lines
868 B
Go
32 lines
868 B
Go
package wal
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import (
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"github.com/milvus-io/milvus/pkg/streaming/util/message"
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"github.com/milvus-io/milvus/pkg/streaming/util/options"
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)
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type MessageFilter = func(message.ImmutableMessage) bool
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// ReadOption is the option for reading records from the wal.
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type ReadOption struct {
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DeliverPolicy options.DeliverPolicy
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MessageFilter MessageFilter
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}
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// Scanner is the interface for reading records from the wal.
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type Scanner interface {
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// Chan returns the channel of message.
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Chan() <-chan message.ImmutableMessage
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// Error returns the error of scanner failed.
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// Will block until scanner is closed or Chan is dry out.
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Error() error
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// Done returns a channel which will be closed when scanner is finished or closed.
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Done() <-chan struct{}
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// Close the scanner, release the underlying resources.
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// Return the error same with `Error`
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Close() error
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}
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