*: regenerate proto to use local import path

Using Go-style import paths in protos is not idiomatic. Normally, this
detail would be internal to etcd, but the path from which gogoproto
is imported affects downstream consumers (e.g. cockroachdb).

In cockroach, we want to avoid including `$GOPATH/src` in our protoc
include path for various reasons. This patch puts etcd on the same
convention, which allows this for cockroach.

More information: https://github.com/cockroachdb/cockroach/pull/2339#discussion_r38663417

This commit also regenerates all the protos, which seem to have
drifted a tiny bit.

etcdserver/etcdserverpb/etcdserver.pb.go

@@ -19,7 +19,7 @@ package etcdserverpb
 import proto "github.com/coreos/etcd/Godeps/_workspace/src/github.com/gogo/protobuf/proto"
 import math "math"
 
-// discarding unused import gogoproto "github.com/gogo/protobuf/gogoproto/gogo.pb"
+// discarding unused import gogoproto "github.com/coreos/etcd/Godeps/_workspace/src/gogoproto/gogo.pb"
 
 import io "io"
 import fmt "fmt"

etcdserver/etcdserverpb/etcdserver.proto

@@ -1,7 +1,7 @@
 syntax = "proto2";
 package etcdserverpb;
 
-import "github.com/gogo/protobuf/gogoproto/gogo.proto";
+import "gogoproto/gogo.proto";
 
 option (gogoproto.marshaler_all) = true;
 option (gogoproto.sizer_all) = true;

etcdserver/etcdserverpb/raft_internal.pb.go

@@ -6,7 +6,7 @@ package etcdserverpb
 
 import proto "github.com/coreos/etcd/Godeps/_workspace/src/github.com/gogo/protobuf/proto"
 
-// discarding unused import gogoproto "github.com/gogo/protobuf/gogoproto/gogo.pb"
+// discarding unused import gogoproto "github.com/coreos/etcd/Godeps/_workspace/src/gogoproto/gogo.pb"
 
 import io "io"
 import fmt "fmt"

etcdserver/etcdserverpb/raft_internal.proto

@@ -1,7 +1,7 @@
 syntax = "proto3";
 package etcdserverpb;
 
-import "github.com/gogo/protobuf/gogoproto/gogo.proto";
+import "gogoproto/gogo.proto";
 import "etcdserver.proto";
 import "rpc.proto";
 

etcdserver/etcdserverpb/rpc.pb.go

@@ -6,7 +6,7 @@ package etcdserverpb
 
 import proto "github.com/coreos/etcd/Godeps/_workspace/src/github.com/gogo/protobuf/proto"
 
-// discarding unused import gogoproto "github.com/gogo/protobuf/gogoproto/gogo.pb"
+// discarding unused import gogoproto "github.com/coreos/etcd/Godeps/_workspace/src/gogoproto/gogo.pb"
 import storagepb "github.com/coreos/etcd/storage/storagepb"
 
 import io "io"
@@ -108,6 +108,8 @@ type RangeResponse struct {
 	Header          *ResponseHeader       `protobuf:"bytes,1,opt,name=header" json:"header,omitempty"`
 	Kvs             []*storagepb.KeyValue `protobuf:"bytes,2,rep,name=kvs" json:"kvs,omitempty"`
 	ConsistentToken []byte                `protobuf:"bytes,3,opt,name=consistent_token,proto3" json:"consistent_token,omitempty"`
+	// more indicates if there are more keys to return in the requested range.
+	More bool `protobuf:"varint,4,opt,name=more,proto3" json:"more,omitempty"`
 }
 
 func (m *RangeResponse) Reset()         { *m = RangeResponse{} }
@@ -329,6 +331,10 @@ func (m *TxnResponse) GetResponses() []*ResponseUnion {
 	return nil
 }
 
+// Compaction compacts the kv store upto the given index (including).
+// It removes the old versions of a key. It keeps the newest version of
+// the key even if its latest modification index is smaller than the given
+// index.
 type CompactionRequest struct {
 	Index int64 `protobuf:"varint,1,opt,name=index,proto3" json:"index,omitempty"`
 }
@@ -696,6 +702,23 @@ func (m *RangeResponse) Unmarshal(data []byte) error {
 			}
 			m.ConsistentToken = append([]byte{}, data[iNdEx:postIndex]...)
 			iNdEx = postIndex
+		case 4:
+			if wireType != 0 {
+				return fmt.Errorf("proto: wrong wireType = %d for field More", wireType)
+			}
+			var v int
+			for shift := uint(0); ; shift += 7 {
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := data[iNdEx]
+				iNdEx++
+				v |= (int(b) & 0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			m.More = bool(v != 0)
 		default:
 			var sizeOfWire int
 			for {
@@ -1942,6 +1965,9 @@ func (m *RangeResponse) Size() (n int) {
 			n += 1 + l + sovRpc(uint64(l))
 		}
 	}
+	if m.More {
+		n += 2
+	}
 	return n
 }
 
@@ -2281,6 +2307,16 @@ func (m *RangeResponse) MarshalTo(data []byte) (n int, err error) {
 			i += copy(data[i:], m.ConsistentToken)
 		}
 	}
+	if m.More {
+		data[i] = 0x20
+		i++
+		if m.More {
+			data[i] = 1
+		} else {
+			data[i] = 0
+		}
+		i++
+	}
 	return i, nil
 }
 

etcdserver/etcdserverpb/rpc.proto

@@ -1,8 +1,8 @@
 syntax = "proto3";
 package etcdserverpb;
 
-import "github.com/gogo/protobuf/gogoproto/gogo.proto";
+import "gogoproto/gogo.proto";
-import "github.com/coreos/etcd/storage/storagepb/kv.proto";
+import "etcd/storage/storagepb/kv.proto";
 
 option (gogoproto.marshaler_all) = true;
 option (gogoproto.unmarshaler_all) = true;

raft/raftpb/raft.pb.go

@@ -22,7 +22,7 @@ package raftpb
 import proto "github.com/coreos/etcd/Godeps/_workspace/src/github.com/gogo/protobuf/proto"
 import math "math"
 
-// discarding unused import gogoproto "github.com/gogo/protobuf/gogoproto/gogo.pb"
+// discarding unused import gogoproto "github.com/coreos/etcd/Godeps/_workspace/src/gogoproto/gogo.pb"
 
 import io "io"
 import fmt "fmt"

raft/raftpb/raft.proto

@@ -1,7 +1,7 @@
 syntax = "proto2";
 package raftpb;
 
-import "github.com/gogo/protobuf/gogoproto/gogo.proto";
+import "gogoproto/gogo.proto";
 
 option (gogoproto.marshaler_all) = true;
 option (gogoproto.sizer_all) = true;

scripts/genproto.sh

@@ -22,7 +22,7 @@ export GOBIN=${PWD}/bin
 go get github.com/gogo/protobuf/{proto,protoc-gen-gogo,gogoproto}
 pushd ${GOPATH}/src/github.com/gogo/protobuf/
 	git reset --hard ${SHA}
-	make
+	make install
 popd
 
 export PATH="${GOBIN}:${PATH}"
@@ -35,10 +35,17 @@ for dir in ${DIRS}; do
 	popd
 done
 
+COREOS_ROOT="${GOPATH}/src/github.com/coreos"
+GOGOPROTO_ROOT="${GOPATH}/src/github.com/gogo/protobuf"
+GOGOPROTO_PATH="${GOGOPROTO_ROOT}:${GOGOPROTO_ROOT}/protobuf"
+
+ESCAPED_PREFIX=$(echo $PREFIX | sed -e 's/[\/&]/\\&/g')
+
 for dir in ${DIRS}; do
 	pushd ${dir}
-		protoc --gogofast_out=plugins=grpc:. -I=.:${GOPATH}/src/github.com/gogo/protobuf/protobuf:${GOPATH}/src *.proto
+		protoc --gogofast_out=plugins=grpc,import_prefix=github.com/coreos/:. -I=.:"${GOGOPROTO_PATH}":"${COREOS_ROOT}" *.proto
-		sed -i".bak" -e "s|github.com/gogo/protobuf/proto|${PREFIX}/github.com/gogo/protobuf/proto|" *.go
+		sed -i.bak -E "s/github\.com\/coreos\/(gogoproto|github\.com|golang\.org|google\.golang\.org)/${ESCAPED_PREFIX}\/\1/g" *.pb.go
+		sed -i.bak -E 's/github\.com\/coreos\/(errors|fmt|io)/\1/g' *.pb.go
 		rm -f *.bak
 	popd
 done

snap/snappb/snap.pb.go

@@ -16,7 +16,7 @@ package snappb
 import proto "github.com/coreos/etcd/Godeps/_workspace/src/github.com/gogo/protobuf/proto"
 import math "math"
 
-// discarding unused import gogoproto "github.com/gogo/protobuf/gogoproto/gogo.pb"
+// discarding unused import gogoproto "github.com/coreos/etcd/Godeps/_workspace/src/gogoproto/gogo.pb"
 
 import io "io"
 import fmt "fmt"

snap/snappb/snap.proto

@@ -1,7 +1,7 @@
 syntax = "proto2";
 package snappb;
 
-import "github.com/gogo/protobuf/gogoproto/gogo.proto";
+import "gogoproto/gogo.proto";
 
 option (gogoproto.marshaler_all) = true;
 option (gogoproto.sizer_all) = true;

storage/storagepb/kv.pb.go

@@ -16,7 +16,7 @@ package storagepb
 
 import proto "github.com/coreos/etcd/Godeps/_workspace/src/github.com/gogo/protobuf/proto"
 
-// discarding unused import gogoproto "github.com/gogo/protobuf/gogoproto/gogo.pb"
+// discarding unused import gogoproto "github.com/coreos/etcd/Godeps/_workspace/src/gogoproto/gogo.pb"
 
 import io "io"
 import fmt "fmt"
@@ -49,8 +49,8 @@ func (x Event_EventType) String() string {
 
 type KeyValue struct {
 	Key         []byte `protobuf:"bytes,1,opt,name=key,proto3" json:"key,omitempty"`
-	// mod_index is the last modified index of the key.
 	CreateIndex int64  `protobuf:"varint,2,opt,name=create_index,proto3" json:"create_index,omitempty"`
+	// mod_index is the last modified index of the key.
 	ModIndex int64 `protobuf:"varint,3,opt,name=mod_index,proto3" json:"mod_index,omitempty"`
 	// version is the version of the key. A deletion resets
 	// the version to zero and any modification of the key

storage/storagepb/kv.proto

@@ -1,7 +1,7 @@
 syntax = "proto3";
 package storagepb;
 
-import "github.com/gogo/protobuf/gogoproto/gogo.proto";
+import "gogoproto/gogo.proto";
 
 option (gogoproto.marshaler_all) = true;
 option (gogoproto.sizer_all) = true;

wal/walpb/record.pb.go

@@ -17,7 +17,7 @@ package walpb
 import proto "github.com/coreos/etcd/Godeps/_workspace/src/github.com/gogo/protobuf/proto"
 import math "math"
 
-// discarding unused import gogoproto "github.com/gogo/protobuf/gogoproto/gogo.pb"
+// discarding unused import gogoproto "github.com/coreos/etcd/Godeps/_workspace/src/gogoproto/gogo.pb"
 
 import io "io"
 import fmt "fmt"

wal/walpb/record.proto

@@ -1,7 +1,7 @@
 syntax = "proto2";
 package walpb;
 
-import "github.com/gogo/protobuf/gogoproto/gogo.proto";
+import "gogoproto/gogo.proto";
 
 option (gogoproto.marshaler_all) = true;
 option (gogoproto.sizer_all) = true;