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kv.go
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kv.go
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package server
import (
"context"
"github.com/sirupsen/logrus"
"go.etcd.io/etcd/api/v3/etcdserverpb"
"go.etcd.io/etcd/api/v3/mvccpb"
)
// explicit interface check
var _ etcdserverpb.KVServer = (*KVServerBridge)(nil)
func (k *KVServerBridge) Range(ctx context.Context, r *etcdserverpb.RangeRequest) (*etcdserverpb.RangeResponse, error) {
if r.KeysOnly {
return nil, unsupported("keysOnly")
}
if r.MaxCreateRevision != 0 {
return nil, unsupported("maxCreateRevision")
}
if r.SortOrder != 0 {
return nil, unsupported("sortOrder")
}
if r.SortTarget != 0 {
return nil, unsupported("sortTarget")
}
if r.Serializable {
return nil, unsupported("serializable")
}
if r.MinModRevision != 0 {
return nil, unsupported("minModRevision")
}
if r.MinCreateRevision != 0 {
return nil, unsupported("minCreateRevision")
}
if r.MaxCreateRevision != 0 {
return nil, unsupported("maxCreateRevision")
}
if r.MaxModRevision != 0 {
return nil, unsupported("maxModRevision")
}
resp, err := k.limited.Range(ctx, r)
if err != nil {
logrus.Errorf("error while range on %s %s: %v", r.Key, r.RangeEnd, err)
return nil, err
}
rangeResponse := &etcdserverpb.RangeResponse{
More: resp.More,
Count: resp.Count,
Header: resp.Header,
Kvs: toKVs(resp.Kvs...),
}
return rangeResponse, nil
}
func toKVs(kvs ...*KeyValue) []*mvccpb.KeyValue {
if len(kvs) == 0 || kvs[0] == nil {
return nil
}
ret := make([]*mvccpb.KeyValue, 0, len(kvs))
for _, kv := range kvs {
newKV := toKV(kv)
if newKV != nil {
ret = append(ret, newKV)
}
}
return ret
}
func toKV(kv *KeyValue) *mvccpb.KeyValue {
if kv == nil {
return nil
}
return &mvccpb.KeyValue{
Key: []byte(kv.Key),
Value: kv.Value,
Lease: kv.Lease,
CreateRevision: kv.CreateRevision,
ModRevision: kv.ModRevision,
}
}
func (k *KVServerBridge) Put(ctx context.Context, r *etcdserverpb.PutRequest) (*etcdserverpb.PutResponse, error) {
return nil, unsupported("put")
}
func (k *KVServerBridge) DeleteRange(ctx context.Context, r *etcdserverpb.DeleteRangeRequest) (*etcdserverpb.DeleteRangeResponse, error) {
return nil, unsupported("delete")
}
func (k *KVServerBridge) Txn(ctx context.Context, r *etcdserverpb.TxnRequest) (*etcdserverpb.TxnResponse, error) {
res, err := k.limited.Txn(ctx, r)
if err != nil {
logrus.Errorf("error in txn %s: %v", r, err)
}
return res, err
}
func (k *KVServerBridge) Compact(ctx context.Context, r *etcdserverpb.CompactionRequest) (*etcdserverpb.CompactionResponse, error) {
return &etcdserverpb.CompactionResponse{
Header: &etcdserverpb.ResponseHeader{
Revision: r.Revision,
},
}, nil
}