Airat Arifullin
b3deb893ba
* Split the logic of write target initialization to different packages; * Refactor patch and put services: since both service initialize the target themselves. Signed-off-by: Airat Arifullin <a.arifullin@yadro.com>
131 lines
3.3 KiB
Go
131 lines
3.3 KiB
Go
package writer
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import (
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"context"
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"fmt"
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"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/object"
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"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object_manager/placement"
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objectSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
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)
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type preparedObjectTarget interface {
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WriteObject(context.Context, *objectSDK.Object, object.ContentMeta) error
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}
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type distributedWriter struct {
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cfg *Config
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placementOpts []placement.Option
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obj *objectSDK.Object
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objMeta object.ContentMeta
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nodeTargetInitializer func(NodeDescriptor) preparedObjectTarget
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relay func(context.Context, NodeDescriptor) error
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resetSuccessAfterOnBroadcast bool
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}
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// parameters and state of container Traversal.
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type Traversal struct {
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Opts []placement.Option
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// need of additional broadcast after the object is saved
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ExtraBroadcastEnabled bool
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// container nodes which was processed during the primary object placement
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Exclude map[string]*bool
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ResetSuccessAfterOnBroadcast bool
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}
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// updates traversal parameters after the primary placement finish and
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// returns true if additional container broadcast is needed.
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func (x *Traversal) submitPrimaryPlacementFinish() bool {
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if x.ExtraBroadcastEnabled {
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// do not track success during container broadcast (best-effort)
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x.Opts = append(x.Opts, placement.WithoutSuccessTracking())
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if x.ResetSuccessAfterOnBroadcast {
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x.Opts = append(x.Opts, placement.ResetSuccessAfter())
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}
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// avoid 2nd broadcast
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x.ExtraBroadcastEnabled = false
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return true
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}
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return false
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}
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// marks the container node as processed during the primary object placement.
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func (x *Traversal) submitProcessed(n placement.Node, item *bool) {
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if x.ExtraBroadcastEnabled {
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key := string(n.PublicKey())
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if x.Exclude == nil {
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x.Exclude = make(map[string]*bool, 1)
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}
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x.Exclude[key] = item
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}
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}
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type NodeDescriptor struct {
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Local bool
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Info placement.Node
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}
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// errIncompletePut is returned if processing on a container fails.
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type errIncompletePut struct {
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singleErr error // error from the last responding node
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}
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func (x errIncompletePut) Error() string {
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const commonMsg = "incomplete object PUT by placement"
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if x.singleErr != nil {
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return fmt.Sprintf("%s: %v", commonMsg, x.singleErr)
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}
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return commonMsg
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}
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// WriteObject implements the transformer.ObjectWriter interface.
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func (t *distributedWriter) WriteObject(ctx context.Context, obj *objectSDK.Object) error {
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t.obj = obj
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var err error
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if t.objMeta, err = t.cfg.FormatValidator.ValidateContent(t.obj); err != nil {
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return fmt.Errorf("(%T) could not validate payload content: %w", t, err)
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}
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return t.iteratePlacement(ctx)
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}
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func (t *distributedWriter) sendObject(ctx context.Context, node NodeDescriptor) error {
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if !node.Local && t.relay != nil {
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return t.relay(ctx, node)
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}
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target := t.nodeTargetInitializer(node)
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err := target.WriteObject(ctx, t.obj, t.objMeta)
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if err != nil {
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return fmt.Errorf("could not write header: %w", err)
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}
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return nil
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}
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func (t *distributedWriter) iteratePlacement(ctx context.Context) error {
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id, _ := t.obj.ID()
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iter := t.cfg.NewNodeIterator(append(t.placementOpts, placement.ForObject(id)))
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iter.ExtraBroadcastEnabled = NeedAdditionalBroadcast(t.obj, false /* Distributed target is for cluster-wide PUT */)
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iter.ResetSuccessAfterOnBroadcast = t.resetSuccessAfterOnBroadcast
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return iter.ForEachNode(ctx, t.sendObject)
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}
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