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https://github.com/featurebasedb/featurebase.git
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20429bb9dc
* Remove MDS and replace it with Controller This commit removes the MDS layer (and package) and shifts Controller package into its place. * add pprof/fgprof to serverless http router --------- Co-authored-by: Matthew Jaffee <jaffee@pilosa.com>
100 lines
3.3 KiB
Go
100 lines
3.3 KiB
Go
package computer
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import (
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"context"
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"io"
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"github.com/featurebasedb/featurebase/v3/dax"
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)
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// Registrar represents the methods which Computer uses to register itself with
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// the Controller.
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type Registrar interface {
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RegisterNode(ctx context.Context, node *dax.Node) error
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CheckInNode(ctx context.Context, node *dax.Node) error
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}
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// WritelogService represents the WritelogService methods which Computer uses.
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// These are typically implemented by the Writelogger client.
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type WritelogService interface {
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AppendMessage(bucket string, key string, version int, msg []byte) error
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LogReader(bucket string, key string, version int) (io.ReadCloser, error)
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LogReaderFrom(bucket string, key string, version int, offset int) (io.ReadCloser, error)
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DeleteLog(bucket string, key string, version int) error
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List(bucket, key string) ([]WriteLogInfo, error)
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Lock(bucket, key string) error
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Unlock(bucket, key string) error
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}
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// SnapshotService represents the SnapshotService methods which Computer uses.
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// These are typically implemented by both the Snapshotter client.
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type SnapshotService interface {
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Read(bucket string, key string, version int) (io.ReadCloser, error)
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Write(bucket string, key string, version int, rc io.ReadCloser) error
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WriteTo(bucket string, key string, version int, wrTo io.WriterTo) error
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List(bucket, key string) ([]SnapInfo, error)
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}
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// SnapInfo holds metadata about a snapshot.
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type SnapInfo struct {
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Version int
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// Date time.Time
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}
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// WriteLogInfo holds metadata about a write log.
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type WriteLogInfo SnapInfo
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// LogMessage is implemented by a variety of types which can be serialized as
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// messages to the Writelogger.
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type LogMessage interface{}
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/////////// No-op implementations of the interfaces //////////////
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// nopWritelogService is a no-op implementation of the WritelogService
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// interface.
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type nopWritelogService struct{}
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func NewNopWritelogService() *nopWritelogService {
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return &nopWritelogService{}
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}
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func (b *nopWritelogService) AppendMessage(bucket string, key string, version int, msg []byte) error {
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return nil
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}
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func (b *nopWritelogService) LogReader(bucket string, key string, version int) (io.ReadCloser, error) {
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return nil, nil
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}
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func (b *nopWritelogService) LogReaderFrom(bucket string, key string, version int, offset int) (io.ReadCloser, error) {
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return nil, nil
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}
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func (b *nopWritelogService) DeleteLog(bucket string, key string, version int) error {
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return nil
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}
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func (b *nopWritelogService) List(bucket, key string) ([]WriteLogInfo, error) {
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return nil, nil
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}
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func (b *nopWritelogService) Lock(bucket, key string) error {
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return nil
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}
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func (b *nopWritelogService) Unlock(bucket, key string) error {
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return nil
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}
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// nopSnapshotterService is a no-op implementation of the WritelogService
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// interface.
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type nopSnapshotterService struct{}
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func NewNopSnapshotterService() *nopSnapshotterService {
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return &nopSnapshotterService{}
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}
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func (b *nopSnapshotterService) Read(bucket string, key string, version int) (io.ReadCloser, error) {
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return nil, nil
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}
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func (b *nopSnapshotterService) Write(bucket string, key string, version int, rc io.ReadCloser) error {
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return nil
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}
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func (b *nopSnapshotterService) WriteTo(bucket string, key string, version int, wrTo io.WriterTo) error {
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return nil
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}
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func (b *nopSnapshotterService) List(bucket, key string) ([]SnapInfo, error) {
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return nil, nil
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}
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