| 1 | package host |
| 2 | |
| 3 | import ( |
| 4 | "context" |
| 5 | "errors" |
| 6 | "github.com/carlosframework/platform/internal/activator" |
| 7 | "github.com/carlosframework/platform/internal/hostbox" |
| 8 | "github.com/carlosframework/platform/internal/hostclaim" |
| 9 | "github.com/carlosframework/platform/internal/registry" |
| 10 | "time" |
| 11 | ) |
| 12 | |
| 13 | type filesSeedRuntimeFactory func(context.Context, *filesSeedOperation, *activator.SeedExclusion) (*activator.ClaimRuntime, *ClaimWakeAssembly, error) |
| 14 | |
| 15 | func newFilesSeedRuntime(ctx context.Context, a ClaimAssembly, source hostbox.WorkSource, writer hostbox.Writer, op *filesSeedOperation, exclusion *activator.SeedExclusion) (*activator.ClaimRuntime, *ClaimWakeAssembly, error) { |
| 16 | if a.Wake == nil || op == nil || a.wakeUnavailable != nil { |
| 17 | return nil, nil, hostbox.ErrUnsupported |
| 18 | } |
| 19 | base := a.Wake |
| 20 | var serving *claimServingOwners |
| 21 | switch in := base.Inputs.(type) { |
| 22 | case ClaimOwnerDispatch: |
| 23 | serving, _ = in.Serving.Inputs.(*claimServingOwners) |
| 24 | case *claimServingOwners: |
| 25 | serving = in |
| 26 | } |
| 27 | if serving == nil { |
| 28 | return nil, nil, hostbox.ErrUnsupported |
| 29 | } |
| 30 | sources := serving.Sources |
| 31 | sources.Files = op.files |
| 32 | private := &claimServingOwners{HomeRegion: serving.HomeRegion, Data: serving.Data, Bucket: serving.Bucket, Region: serving.Region, Box: serving.Box, NewID: serving.NewID, Now: serving.Now, Sources: sources} |
| 33 | w := &ClaimWakeAssembly{Roles: base.Roles, LeaseRegion: base.LeaseRegion, Producers: base.Producers, Inputs: private, Manager: base.Manager, Retries: base.Retries, BeforeAdmission: base.BeforeAdmission, RetireArtifacts: base.RetireArtifacts, RecoverArtifacts: base.RecoverArtifacts, RequireServingEnrollment: base.RequireServingEnrollment, BeforeLegacyInstall: base.BeforeLegacyInstall, BeforeInstallLocked: base.BeforeInstallLocked, PrepareState: base.PrepareState, Prelaunch: base.Prelaunch, Launch: base.Launch, Ready: base.Ready, ObserveLoss: base.ObserveLoss} |
| 34 | w.Retain = w.retainCaptured |
| 35 | w.ServingPrerequisites = op.prerequisites(exclusion) |
| 36 | w.AfterAdmission = func(ctx context.Context, prior, current hostclaim.Observed) error { |
| 37 | if err := base.AfterAdmission(ctx, prior, current); err != nil { |
| 38 | return err |
| 39 | } |
| 40 | return op.admitted(ctx, current) |
| 41 | } |
| 42 | w.Retries.Inputs = private.launchDigest |
| 43 | w.Retries.ExactHealth = w.exactHealth |
| 44 | w.Retries.BeforeReserve = func(ctx context.Context, rt registry.Route, o hostclaim.Observed) error { |
| 45 | if err := w.ServingPrerequisites(ctx, rt, o); err != nil { |
| 46 | return err |
| 47 | } |
| 48 | return claimServingRoom(op.files.DataDir) |
| 49 | } |
| 50 | a.Wake = w |
| 51 | a.bindClaimWakeStop() |
| 52 | writer.AdmissionEvidence = private.admissionEvidence |
| 53 | runtime, err := w.Build(ctx, source, writer) |
| 54 | return runtime, w, err |
| 55 | } |
| 56 | |
| 57 | // The seed follows ordinary cold preparation and spends its one attempt. It |
| 58 | // never calls any launch, publication, replication or health closure. |
| 59 | func prepareFilesSeed(ctx context.Context, rt registry.Route, runtime *activator.ClaimRuntime, o hostclaim.Observed, exclusion *activator.SeedExclusion) (admitted hostclaim.Observed, settled bool, resultErr error) { |
| 60 | if err := exclusion.Check(rt.Host); err != nil { |
| 61 | return admitted, false, err |
| 62 | } |
| 63 | if runtime == nil || runtime.Read == nil || runtime.Prerequisites == nil || runtime.Admit == nil || runtime.Prepare == nil || runtime.FailedAdmission == nil { |
| 64 | return admitted, false, hostbox.ErrUnsupported |
| 65 | } |
| 66 | policy := activator.StartPolicy{MaxStarts: 5, Window: 30 * time.Second} |
| 67 | cleanupObservation := o |
| 68 | var start activator.ClaimStart |
| 69 | defer func() { |
| 70 | cleanup, cancel := activator.CleanupContext(ctx, 30*time.Second) |
| 71 | defer cancel() |
| 72 | var stopErr error |
| 73 | if start.Failed != nil { |
| 74 | stopErr = start.Failed(cleanup, 0) |
| 75 | } |
| 76 | closeErr := runtime.FailedAdmission(cleanup, cleanupObservation, hostbox.ErrChanged) |
| 77 | fresh, readErr := runtime.Read(cleanup, o.Host) |
| 78 | if readErr == nil { |
| 79 | if fresh.Claim == nil || fresh.Claim.Holder == nil || o.Claim == nil || o.Claim.Holder == nil || fresh.Claim.Holder.Incarnation != o.Claim.Holder.Incarnation || fresh.Claim.Holder.WakeRetry != nil && fresh.Claim.Holder.WakeRetry.State == "attempting" { |
| 80 | readErr = hostbox.ErrChanged |
| 81 | } |
| 82 | } |
| 83 | closeErr = errors.Join(closeErr, readErr) |
| 84 | settled = stopErr == nil && closeErr == nil |
| 85 | resultErr = errors.Join(resultErr, stopErr, closeErr) |
| 86 | }() |
| 87 | if err := runtime.Prerequisites(ctx, rt, o, policy); err != nil { |
| 88 | return admitted, false, err |
| 89 | } |
| 90 | var err error |
| 91 | admitted, err = runtime.Admit(ctx, rt, o, policy) |
| 92 | if err != nil { |
| 93 | return admitted, false, err |
| 94 | } |
| 95 | cleanupObservation = admitted |
| 96 | start, err = runtime.Prepare(ctx, rt, admitted, policy) |
| 97 | if err != nil { |
| 98 | return admitted, false, err |
| 99 | } |
| 100 | if start.Restore == nil || start.Reserve == nil || start.Materialize == nil || start.Failed == nil { |
| 101 | return admitted, false, hostbox.ErrUnsupported |
| 102 | } |
| 103 | if err = start.Restore(ctx); err != nil { |
| 104 | return admitted, false, err |
| 105 | } |
| 106 | if err = start.Reserve(ctx, 0); err != nil { |
| 107 | return admitted, false, err |
| 108 | } |
| 109 | if err = exclusion.Check(rt.Host); err != nil { |
| 110 | return admitted, false, err |
| 111 | } |
| 112 | resultErr = start.Materialize(ctx) |
| 113 | return admitted, false, resultErr |
| 114 | } |
| 115 | |
amadan