c753d17e8f
objectdeletion.ObjectIdentifier with metabase.ObjectLocation Another change to use metabase.ObjectLocation across satellite codebase to avoid duplication and provide better type safety. Change-Id: I82cb52b94a9107ed3144255a6ef4ad9f3fc1ca63
90 lines
2.4 KiB
Go
90 lines
2.4 KiB
Go
// Copyright (C) 2020 Storj Labs, Inc.
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// See LICENSE for copying information.
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package objectdeletion
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import (
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"context"
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"storj.io/common/pb"
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"storj.io/storj/satellite/metainfo/metabase"
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)
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// ObjectState determines how an object should be handled during
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// a delete operation.
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// It also stores pointers related to an object.
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type ObjectState struct {
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metabase.ObjectLocation
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LastSegment *pb.Pointer
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ZeroSegment *pb.Pointer
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OtherSegments []*pb.Pointer
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}
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// Status returns the current object status.
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func (state *ObjectState) Status() ObjectStatus {
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switch {
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case state.LastSegment == nil && state.ZeroSegment == nil:
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return ObjectMissing
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case state.LastSegment != nil && state.ZeroSegment == nil:
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return ObjectSingleSegment
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case state.LastSegment != nil && state.ZeroSegment != nil:
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return ObjectMultiSegment
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case state.LastSegment == nil && state.ZeroSegment != nil:
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return ObjectActiveOrZombie
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default:
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return ObjectMissing
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}
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}
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// ObjectStatus is used to determine how to retrieve segment information
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// from the database.
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type ObjectStatus byte
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const (
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// ObjectMissing represents when there's no object with that particular name.
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ObjectMissing = ObjectStatus(iota)
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// ObjectMultiSegment represents a multi segment object.
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ObjectMultiSegment
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// ObjectSingleSegment represents a single segment object.
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ObjectSingleSegment
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// ObjectActiveOrZombie represents either an object is being uploaded, deleted or it's a zombie.
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ObjectActiveOrZombie
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)
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// CreateObjectStates creates the current object states.
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func CreateObjectStates(ctx context.Context, requests []*metabase.ObjectLocation, pointers []*pb.Pointer, paths []metabase.SegmentKey) (map[metabase.ObjectLocation]*ObjectState, error) {
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// Fetch headers to figure out the status of objects.
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objects := make(map[metabase.ObjectLocation]*ObjectState)
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for _, req := range requests {
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objects[*req] = &ObjectState{
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ObjectLocation: *req,
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}
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}
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for i, p := range paths {
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// Update our state map.
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segmentLocation, err := metabase.ParseSegmentKey(p)
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if err != nil {
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return nil, Error.Wrap(err)
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}
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state, ok := objects[segmentLocation.Object()]
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if !ok {
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return nil, Error.Wrap(err)
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}
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switch {
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case segmentLocation.IsLast():
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state.LastSegment = pointers[i]
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case segmentLocation.IsFirst():
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state.ZeroSegment = pointers[i]
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default:
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return nil, Error.New("pointerDB failure")
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}
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}
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return objects, nil
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}
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