mirror of https://github.com/hashicorp/consul
77 lines
2.5 KiB
Go
77 lines
2.5 KiB
Go
// Copyright (c) HashiCorp, Inc.
|
|
// SPDX-License-Identifier: MPL-2.0
|
|
|
|
package inmem
|
|
|
|
import (
|
|
"context"
|
|
"strconv"
|
|
"sync/atomic"
|
|
|
|
"google.golang.org/protobuf/proto"
|
|
|
|
"github.com/hashicorp/consul/internal/storage"
|
|
"github.com/hashicorp/consul/proto-public/pbresource"
|
|
)
|
|
|
|
// NewBackend returns a purely in-memory storage backend. It's suitable for
|
|
// testing and development mode, but should NOT be used in production as it
|
|
// has no support for durable persistence, so all of your data will be lost
|
|
// when the process restarts or crashes.
|
|
//
|
|
// You must call Run before using the backend.
|
|
func NewBackend() (*Backend, error) {
|
|
store, err := NewStore()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return &Backend{store: store}, nil
|
|
}
|
|
|
|
// Backend is a purely in-memory storage backend implementation.
|
|
type Backend struct {
|
|
vsn uint64
|
|
|
|
store *Store
|
|
}
|
|
|
|
// Run until the given context is canceled. This method blocks, so should be
|
|
// called in a goroutine.
|
|
func (b *Backend) Run(ctx context.Context) { b.store.Run(ctx) }
|
|
|
|
// Read implements the storage.Backend interface.
|
|
func (b *Backend) Read(_ context.Context, _ storage.ReadConsistency, id *pbresource.ID) (*pbresource.Resource, error) {
|
|
return b.store.Read(id)
|
|
}
|
|
|
|
// WriteCAS implements the storage.Backend interface.
|
|
func (b *Backend) WriteCAS(_ context.Context, res *pbresource.Resource) (*pbresource.Resource, error) {
|
|
stored := proto.Clone(res).(*pbresource.Resource)
|
|
stored.Version = strconv.Itoa(int(atomic.AddUint64(&b.vsn, 1)))
|
|
|
|
if err := b.store.WriteCAS(stored, res.Version); err != nil {
|
|
return nil, err
|
|
}
|
|
return stored, nil
|
|
}
|
|
|
|
// DeleteCAS implements the storage.Backend interface.
|
|
func (b *Backend) DeleteCAS(_ context.Context, id *pbresource.ID, version string) error {
|
|
return b.store.DeleteCAS(id, version)
|
|
}
|
|
|
|
// List implements the storage.Backend interface.
|
|
func (b *Backend) List(_ context.Context, _ storage.ReadConsistency, resType storage.UnversionedType, tenancy *pbresource.Tenancy, namePrefix string) ([]*pbresource.Resource, error) {
|
|
return b.store.List(resType, tenancy, namePrefix)
|
|
}
|
|
|
|
// WatchList implements the storage.Backend interface.
|
|
func (b *Backend) WatchList(_ context.Context, resType storage.UnversionedType, tenancy *pbresource.Tenancy, namePrefix string) (storage.Watch, error) {
|
|
return b.store.WatchList(resType, tenancy, namePrefix)
|
|
}
|
|
|
|
// OwnerReferences implements the storage.Backend interface.
|
|
func (b *Backend) OwnerReferences(_ context.Context, id *pbresource.ID) ([]*pbresource.ID, error) {
|
|
return b.store.OwnerReferences(id)
|
|
}
|