func (op Op) toRequestOp() *pb.RequestOp {
switch op.t {
case tRange:
r := &pb.RangeRequest{
Key: op.key,
RangeEnd: op.end,
Limit: op.limit,
Revision: op.rev,
Serializable: op.serializable,
KeysOnly: op.keysOnly,
CountOnly: op.countOnly,
}
if op.sort != nil {
r.SortOrder = pb.RangeRequest_SortOrder(op.sort.Order)
r.SortTarget = pb.RangeRequest_SortTarget(op.sort.Target)
}
return &pb.RequestOp{Request: &pb.RequestOp_RequestRange{RequestRange: r}}
case tPut:
r := &pb.PutRequest{Key: op.key, Value: op.val, Lease: int64(op.leaseID), PrevKv: op.prevKV}
return &pb.RequestOp{Request: &pb.RequestOp_RequestPut{RequestPut: r}}
case tDeleteRange:
r := &pb.DeleteRangeRequest{Key: op.key, RangeEnd: op.end, PrevKv: op.prevKV}
return &pb.RequestOp{Request: &pb.RequestOp_RequestDeleteRange{RequestDeleteRange: r}}
default:
panic("Unknown Op")
}
}
func (kv *kv) do(ctx context.Context, op Op) (OpResponse, error) {
var err error
switch op.t {
// TODO: handle other ops
case tRange:
var resp *pb.RangeResponse
r := &pb.RangeRequest{Key: op.key, RangeEnd: op.end, Limit: op.limit, Revision: op.rev, Serializable: op.serializable}
if op.sort != nil {
r.SortOrder = pb.RangeRequest_SortOrder(op.sort.Order)
r.SortTarget = pb.RangeRequest_SortTarget(op.sort.Target)
}
resp, err = kv.remote.Range(ctx, r)
if err == nil {
return OpResponse{get: (*GetResponse)(resp)}, nil
}
case tPut:
var resp *pb.PutResponse
r := &pb.PutRequest{Key: op.key, Value: op.val, Lease: int64(op.leaseID)}
resp, err = kv.remote.Put(ctx, r)
if err == nil {
return OpResponse{put: (*PutResponse)(resp)}, nil
}
case tDeleteRange:
var resp *pb.DeleteRangeResponse
r := &pb.DeleteRangeRequest{Key: op.key, RangeEnd: op.end}
resp, err = kv.remote.DeleteRange(ctx, r)
if err == nil {
return OpResponse{del: (*DeleteResponse)(resp)}, nil
}
default:
panic("Unknown op")
}
return OpResponse{}, err
}
func (kv *kv) do(ctx context.Context, op Op) (*pb.ResponseUnion, error) {
for {
var err error
switch op.t {
// TODO: handle other ops
case tRange:
var resp *pb.RangeResponse
r := &pb.RangeRequest{Key: op.key, RangeEnd: op.end, Limit: op.limit, Revision: op.rev}
if op.sort != nil {
r.SortOrder = pb.RangeRequest_SortOrder(op.sort.Order)
r.SortTarget = pb.RangeRequest_SortTarget(op.sort.Target)
}
resp, err = kv.getRemote().Range(ctx, r)
if err == nil {
respu := &pb.ResponseUnion_ResponseRange{ResponseRange: resp}
return &pb.ResponseUnion{Response: respu}, nil
}
case tPut:
var resp *pb.PutResponse
r := &pb.PutRequest{Key: op.key, Value: op.val, Lease: int64(op.leaseID)}
resp, err = kv.getRemote().Put(ctx, r)
if err == nil {
respu := &pb.ResponseUnion_ResponsePut{ResponsePut: resp}
return &pb.ResponseUnion{Response: respu}, nil
}
case tDeleteRange:
var resp *pb.DeleteRangeResponse
r := &pb.DeleteRangeRequest{Key: op.key, RangeEnd: op.end}
resp, err = kv.getRemote().DeleteRange(ctx, r)
if err == nil {
respu := &pb.ResponseUnion_ResponseDeleteRange{ResponseDeleteRange: resp}
return &pb.ResponseUnion{Response: respu}, nil
}
default:
panic("Unknown op")
}
if isRPCError(err) {
return nil, err
}
// do not retry on modifications
if op.isWrite() {
go kv.switchRemote(err)
return nil, err
}
if nerr := kv.switchRemote(err); nerr != nil {
return nil, nerr
}
}
}
func (kv *kv) Do(ctx context.Context, op Op) (OpResponse, error) {
for {
var err error
switch op.t {
// TODO: handle other ops
case tRange:
var resp *pb.RangeResponse
r := &pb.RangeRequest{Key: op.key, RangeEnd: op.end, Limit: op.limit, Revision: op.rev}
if op.sort != nil {
r.SortOrder = pb.RangeRequest_SortOrder(op.sort.Order)
r.SortTarget = pb.RangeRequest_SortTarget(op.sort.Target)
}
resp, err = kv.getRemote().Range(ctx, r)
if err == nil {
return OpResponse{get: (*GetResponse)(resp)}, nil
}
case tPut:
var resp *pb.PutResponse
r := &pb.PutRequest{Key: op.key, Value: op.val, Lease: int64(op.leaseID)}
resp, err = kv.getRemote().Put(ctx, r)
if err == nil {
return OpResponse{put: (*PutResponse)(resp)}, nil
}
case tDeleteRange:
var resp *pb.DeleteRangeResponse
r := &pb.DeleteRangeRequest{Key: op.key, RangeEnd: op.end}
resp, err = kv.getRemote().DeleteRange(ctx, r)
if err == nil {
return OpResponse{del: (*DeleteResponse)(resp)}, nil
}
default:
panic("Unknown op")
}
if isHalted(ctx, err) {
return OpResponse{}, err
}
// do not retry on modifications
if op.isWrite() {
go kv.switchRemote(err)
return OpResponse{}, err
}
if nerr := kv.switchRemote(err); nerr != nil {
return OpResponse{}, nerr
}
}
}
func (op Op) toRequestUnion() *pb.RequestUnion {
switch op.t {
case tRange:
r := &pb.RangeRequest{Key: op.key, RangeEnd: op.end, Limit: op.limit, Revision: op.rev}
if op.sort != nil {
r.SortOrder = pb.RangeRequest_SortOrder(op.sort.Order)
r.SortTarget = pb.RangeRequest_SortTarget(op.sort.Target)
}
return &pb.RequestUnion{Request: &pb.RequestUnion_RequestRange{RequestRange: r}}
case tPut:
r := &pb.PutRequest{Key: op.key, Value: op.val, Lease: int64(op.leaseID)}
return &pb.RequestUnion{Request: &pb.RequestUnion_RequestPut{RequestPut: r}}
case tDeleteRange:
r := &pb.DeleteRangeRequest{Key: op.key, RangeEnd: op.end}
return &pb.RequestUnion{Request: &pb.RequestUnion_RequestDeleteRange{RequestDeleteRange: r}}
default:
panic("Unknown Op")
}
}
func (op Op) toRangeRequest() *pb.RangeRequest {
if op.t != tRange {
panic("op.t != tRange")
}
r := &pb.RangeRequest{
Key: op.key,
RangeEnd: op.end,
Limit: op.limit,
Revision: op.rev,
Serializable: op.serializable,
KeysOnly: op.keysOnly,
CountOnly: op.countOnly,
MinModRevision: op.minModRev,
MaxModRevision: op.maxModRev,
MinCreateRevision: op.minCreateRev,
MaxCreateRevision: op.maxCreateRev,
}
if op.sort != nil {
r.SortOrder = pb.RangeRequest_SortOrder(op.sort.Order)
r.SortTarget = pb.RangeRequest_SortTarget(op.sort.Target)
}
return r
}