| 1 | package host |
| 2 | |
| 3 | import ( |
| 4 | "context" |
| 5 | "fmt" |
| 6 | "strconv" |
| 7 | |
| 8 | "github.com/carlosframework/platform/internal/hostbox" |
| 9 | "github.com/carlosframework/platform/internal/hostclaim" |
| 10 | execlease "github.com/carlosframework/platform/internal/hostexec" |
| 11 | ) |
| 12 | |
| 13 | func (h ClaimRootHTTP) retainedExecutionSource(ctx context.Context, q execlease.ExecutionRequest, actor hostbox.Actor, c *hostclaim.Claim, a execlease.ExecutionAuthority) (execlease.ExecutionAuthority, error) { |
| 14 | source := c.Op.Intent["source"] |
| 15 | if c.Op.Kind == hostclaim.KindRelocating { |
| 16 | source = c.Op.Intent["source_box"] |
| 17 | } |
| 18 | if (!claimMovesKind(c.Op.Kind) && c.Op.Kind != hostclaim.KindRelocating) || source != actor.Box || c.Op.Intent["source_enrollment"] != actor.Enrollment { |
| 19 | return a, execlease.ErrLost |
| 20 | } |
| 21 | guard := h.Stop.Coordinator.Guard |
| 22 | prior, err := guard.Capture(q.Host) |
| 23 | if err != nil { |
| 24 | return a, err |
| 25 | } |
| 26 | if prior.Incarnation != q.Incarnation || prior.Stamp >= q.Stamp { |
| 27 | return a, execlease.ErrLost |
| 28 | } |
| 29 | if stamp := c.Op.Journal[hostclaim.JournalSourceStamp]; stamp != "" && stamp != strconv.FormatUint(prior.Stamp, 10) { |
| 30 | return a, execlease.ErrLost |
| 31 | } |
| 32 | view, err := guard.Root.View(ctx, q.Host, prior) |
| 33 | if err != nil { |
| 34 | return a, err |
| 35 | } |
| 36 | in := view.Installation |
| 37 | if view.Barrier != nil || in.Host != q.Host || in.Incarnation != q.Incarnation || in.Stamp != prior.Stamp || in.Account != a.Account || in.App != a.App || in.Record != c.Holder.Key || in.Box != actor.Box || in.Enrollment != actor.Enrollment || in.Migration == 0 || in.InventoryRevision == 0 { |
| 38 | return a, execlease.ErrLost |
| 39 | } |
| 40 | inventory, revision, err := h.Journals.Inventory.Snapshot(ctx, q.Host, prior) |
| 41 | if err != nil { |
| 42 | return a, err |
| 43 | } |
| 44 | if revision != in.InventoryRevision || !inventory.Complete || inventory.Box != actor.Box || inventory.Enrollment != actor.Enrollment { |
| 45 | return a, execlease.ErrLost |
| 46 | } |
| 47 | a.ParticipationOnly = true |
| 48 | a.Migration = in.Migration |
| 49 | a.Installation = fmt.Sprintf("%s/%d/%s/%s", in.Incarnation, in.Stamp, in.Box, in.Enrollment) |
| 50 | return a, nil |
| 51 | } |
| 52 | |
amadan