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keyvalue.go
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keyvalue.go
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package kvstore
import (
"context"
"fmt"
"berty.tech/go-ipfs-log/identityprovider"
coreapi "github.com/ipfs/interface-go-ipfs-core"
"berty.tech/go-orbit-db/address"
"berty.tech/go-orbit-db/iface"
"berty.tech/go-orbit-db/stores/basestore"
"berty.tech/go-orbit-db/stores/operation"
)
type orbitDBKeyValue struct {
basestore.BaseStore
}
func (o *orbitDBKeyValue) All() map[string][]byte {
idx, ok := o.Index().(*kvIndex)
if !ok {
return map[string][]byte{}
}
idx.muIndex.RLock()
defer idx.muIndex.RUnlock()
copiedIndex := map[string][]byte{}
for k, v := range idx.index {
copiedIndex[k] = v
}
return copiedIndex
}
func (o *orbitDBKeyValue) Put(ctx context.Context, key string, value []byte) (operation.Operation, error) {
op := operation.NewOperation(&key, "PUT", value)
e, err := o.AddOperation(ctx, op, nil)
if err != nil {
return nil, fmt.Errorf("error while adding value: %w", err)
}
op, err = operation.ParseOperation(e)
if err != nil {
return nil, fmt.Errorf("unable to parse newly created entry: %w", err)
}
return op, nil
}
func (o *orbitDBKeyValue) Delete(ctx context.Context, key string) (operation.Operation, error) {
op := operation.NewOperation(&key, "DEL", nil)
e, err := o.AddOperation(ctx, op, nil)
if err != nil {
return nil, fmt.Errorf("error while deleting value: %w", err)
}
op, err = operation.ParseOperation(e)
if err != nil {
return nil, fmt.Errorf("unable to parse newly created entry: %w", err)
}
return op, nil
}
func (o *orbitDBKeyValue) Get(ctx context.Context, key string) ([]byte, error) {
value, ok := o.Index().(*kvIndex).Get(key).([]byte)
if value == nil {
return nil, nil
}
if !ok {
return nil, fmt.Errorf("unable to cast to bytes")
}
return value, nil
}
func (o *orbitDBKeyValue) Type() string {
return "keyvalue"
}
// NewOrbitDBKeyValue Instantiates a new KeyValueStore
func NewOrbitDBKeyValue(ipfs coreapi.CoreAPI, identity *identityprovider.Identity, addr address.Address, options *iface.NewStoreOptions) (i iface.Store, e error) {
store := &orbitDBKeyValue{}
options.Index = NewKVIndex
err := store.InitBaseStore(ipfs, identity, addr, options)
if err != nil {
return nil, fmt.Errorf("unable to initialize base store: %w", err)
}
return store, nil
}
var _ iface.KeyValueStore = &orbitDBKeyValue{}