113 lines
3.5 KiB
Go
113 lines
3.5 KiB
Go
package publish
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import (
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"context"
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"encoding/json"
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"fmt"
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"time"
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"gitea.maximumdirect.net/eric/distributor/internal/state"
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"gitea.maximumdirect.net/eric/distributor/internal/storage"
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)
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func Execute(ctx context.Context, req Request, plan Plan) error {
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switch plan.Action {
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case ActionSkipSame, ActionSkipDestinationNewer:
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return nil
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case ActionPublishNew, ActionReplaceOlder, ActionForceReplace:
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default:
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return fmt.Errorf("cannot execute action %s: %s", plan.Action, plan.Reason)
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}
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if plan.Action == ActionReplaceOlder {
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if plan.ExistingState == nil {
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return fmt.Errorf("replace requires existing destination state")
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}
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if err := req.DestinationBackend.DeleteManagedBundle(ctx, req.DestinationBundlePath, existingManagedOutputPaths(*plan.ExistingState), storage.DeleteOptions{IgnoreMissing: true, PruneEmptyDirs: true}); err != nil {
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return err
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}
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if err := ensureDestinationEmpty(ctx, req.DestinationBackend, req.DestinationBundlePath); err != nil {
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return err
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}
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}
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if plan.Action == ActionForceReplace {
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if err := req.DestinationBackend.DeletePrefix(ctx, req.DestinationBundlePath, storage.DeleteOptions{IgnoreMissing: true, PruneEmptyDirs: true}); err != nil {
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return err
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}
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if err := ensureDestinationEmpty(ctx, req.DestinationBackend, req.DestinationBundlePath); err != nil {
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return err
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}
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}
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writtenOutputs := make([]Output, 0, len(plan.Outputs))
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cleanup := func() {
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_ = req.DestinationBackend.DeleteManagedBundle(ctx, req.DestinationBundlePath, managedOutputPaths(writtenOutputs), storage.DeleteOptions{IgnoreMissing: true, PruneEmptyDirs: true})
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}
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for _, output := range plan.Outputs {
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destinationPath, err := storage.Join(req.DestinationBundlePath, output.DestinationPath)
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if err != nil {
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cleanup()
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return err
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}
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data := output.Data
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if output.Kind == state.OutputKindSource {
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sourcePath, err := storage.Join(req.SourceBundle.RootRelativePath, output.SourcePath)
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if err != nil {
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cleanup()
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return err
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}
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data, err = req.SourceBackend.ReadFile(ctx, sourcePath)
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if err != nil {
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cleanup()
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return err
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}
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}
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if _, err := req.DestinationBackend.WriteFile(ctx, destinationPath, data, storage.WriteOptions{Overwrite: false, PreferAtomic: true}); err != nil {
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cleanup()
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return err
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}
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writtenOutputs = append(writtenOutputs, output)
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}
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destinationState := state.DistributorState{
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SchemaVersion: state.SchemaVersion,
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DistributorVersion: req.DistributorVersion,
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PipelineID: req.PipelineID,
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DestinationID: req.DestinationID,
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PublishedAt: time.Now().UTC(),
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Source: state.SourceState{Manifest: req.SourceBundle.Manifest},
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Outputs: stateOutputs(plan.Outputs),
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}
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if plan.PrimaryURL != "" {
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destinationState.Links = &state.LinkState{PrimaryURL: plan.PrimaryURL}
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}
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if err := state.Validate(destinationState); err != nil {
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cleanup()
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return err
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}
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data, err := json.MarshalIndent(destinationState, "", " ")
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if err != nil {
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cleanup()
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return err
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}
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data = append(data, '\n')
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statePath, err := storage.StatePath(req.DestinationBundlePath)
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if err != nil {
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cleanup()
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return err
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}
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if _, err := req.DestinationBackend.WriteFile(ctx, statePath, data, storage.WriteOptions{Overwrite: false, PreferAtomic: true}); err != nil {
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cleanup()
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return err
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}
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return nil
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}
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func existingManagedOutputPaths(destinationState state.DistributorState) []string {
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paths := make([]string, 0, len(destinationState.Outputs))
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for _, output := range destinationState.Outputs {
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paths = append(paths, output.Path)
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}
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return paths
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}
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