mirror of
https://github.com/seaweedfs/seaweedfs.git
synced 2026-09-25 17:34:28 +00:00
Chris LuandGitHub
15e4da65f7
* master: carry replica read-only state in volume lookups * volume: refresh writable replica targets * volume: preserve read-only replicas for deletes * master: propagate read-only delete capability * volume: target delete-capable replicas * volume: honor configured HTTPS for replica deletes * volume: reject insecure delete authorization forwarding * master: broadcast delete capability changes * volume: align Rust replica routing * http: protect credentialed replica redirects * master: preserve digest compatibility for delete capability * volume: propagate read-only state in short heartbeats * volume: report changed short volume state * http: guard TLS client redirects * master: announce mounted volume read-only state * volume: replace changed identity deltas * master: replace incremental volume layouts in order * master: keep moved volume lookup available * volume: announce read-only mounts
53 lines
1.8 KiB
Go
53 lines
1.8 KiB
Go
package storage
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import (
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"encoding/binary"
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"github.com/cespare/xxhash/v2"
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)
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// ReportHash digests everything a volume server reports about a volume, so the
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// two ends of a heartbeat can agree on whether the master's copy is current
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// without shipping the volume list.
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//
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// It must cover every field of VolumeInformationMessage: a change the hash
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// misses is a change the master would never be told about. Volume servers hash
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// the message they are about to send, masters hash what they already hold, and
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// the two match only when the master is up to date.
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func (vi VolumeInfo) ReportHash() uint64 {
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var buf [57]byte
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binary.LittleEndian.PutUint32(buf[0:], uint32(vi.Id))
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binary.LittleEndian.PutUint64(buf[4:], vi.Size)
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binary.LittleEndian.PutUint64(buf[12:], uint64(vi.FileCount))
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binary.LittleEndian.PutUint64(buf[20:], uint64(vi.DeleteCount))
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binary.LittleEndian.PutUint64(buf[28:], vi.DeletedByteCount)
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binary.LittleEndian.PutUint32(buf[36:], uint32(vi.ReplicaPlacement.Byte()))
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binary.LittleEndian.PutUint32(buf[40:], uint32(vi.Version))
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binary.LittleEndian.PutUint32(buf[44:], vi.Ttl.ToUint32())
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binary.LittleEndian.PutUint32(buf[48:], vi.CompactRevision)
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binary.LittleEndian.PutUint32(buf[52:], vi.DiskId)
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if vi.ReadOnly {
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buf[56] = 1
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}
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if vi.ReadOnlyCanDelete {
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buf[56] |= 2
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}
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h := xxhash.Sum64(buf[:])
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var modified [8]byte
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binary.LittleEndian.PutUint64(modified[:], uint64(vi.ModifiedAtSecond))
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h = foldReportHash(h, xxhash.Sum64(modified[:]))
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h = foldReportHash(h, xxhash.Sum64String(vi.Collection))
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h = foldReportHash(h, xxhash.Sum64String(vi.DiskType))
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h = foldReportHash(h, xxhash.Sum64String(vi.RemoteStorageName))
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return h
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}
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// foldReportHash combines two hashes order-dependently, so swapping two string
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// fields is not invisible.
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func foldReportHash(h, x uint64) uint64 {
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h ^= x
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h *= 0x9E3779B97F4A7C15
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return h ^ (h >> 29)
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}
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