From 667c2543eaf634792155bf29b829fdee3a6d0e1f Mon Sep 17 00:00:00 2001
From: Ethan Buchman <ethan@coinculture.info>
Date: Fri, 22 Sep 2017 11:10:39 -0400
Subject: [PATCH] use request struct for Info

---
 client/client.go                  |   4 +-
 client/grpc_client.go             |  12 +-
 client/local_client.go            |  10 +-
 client/socket_client.go           |   8 +-
 cmd/abci-cli/abci-cli.go          |   7 +-
 example/counter/counter.go        |   2 +-
 example/dummy/dummy.go            |   2 +-
 example/dummy/dummy_test.go       |   4 +-
 example/dummy/persistent_dummy.go |   4 +-
 server/socket_server.go           |   2 +-
 types/application.go              |   4 +-
 types/base_app.go                 |   8 +-
 types/messages.go                 |   4 +-
 types/types.pb.go                 | 282 ++++++++++++------------------
 types/types.proto                 |   1 +
 15 files changed, 152 insertions(+), 202 deletions(-)

diff --git a/client/client.go b/client/client.go
index 3cc5df369..51d04124b 100644
--- a/client/client.go
+++ b/client/client.go
@@ -16,7 +16,7 @@ type Client interface {
 
 	FlushAsync() *ReqRes
 	EchoAsync(msg string) *ReqRes
-	InfoAsync() *ReqRes
+	InfoAsync(types.RequestInfo) *ReqRes
 	SetOptionAsync(key string, value string) *ReqRes
 	DeliverTxAsync(tx []byte) *ReqRes
 	CheckTxAsync(tx []byte) *ReqRes
@@ -25,7 +25,7 @@ type Client interface {
 
 	FlushSync() error
 	EchoSync(msg string) (res types.Result)
-	InfoSync() (resInfo types.ResponseInfo, err error)
+	InfoSync(types.RequestInfo) (resInfo types.ResponseInfo, err error)
 	SetOptionSync(key string, value string) (res types.Result)
 	DeliverTxSync(tx []byte) (res types.Result)
 	CheckTxSync(tx []byte) (res types.Result)
diff --git a/client/grpc_client.go b/client/grpc_client.go
index 31ca3db28..30f5d088a 100644
--- a/client/grpc_client.go
+++ b/client/grpc_client.go
@@ -138,8 +138,8 @@ func (cli *grpcClient) FlushAsync() *ReqRes {
 	return cli.finishAsyncCall(req, &types.Response{&types.Response_Flush{res}})
 }
 
-func (cli *grpcClient) InfoAsync() *ReqRes {
-	req := types.ToRequestInfo()
+func (cli *grpcClient) InfoAsync(params types.RequestInfo) *ReqRes {
+	req := types.ToRequestInfo(params)
 	res, err := cli.client.Info(context.Background(), req.GetInfo(), grpc.FailFast(true))
 	if err != nil {
 		cli.StopForError(err)
@@ -174,8 +174,8 @@ func (cli *grpcClient) CheckTxAsync(tx []byte) *ReqRes {
 	return cli.finishAsyncCall(req, &types.Response{&types.Response_CheckTx{res}})
 }
 
-func (cli *grpcClient) QueryAsync(reqQuery types.RequestQuery) *ReqRes {
-	req := types.ToRequestQuery(reqQuery)
+func (cli *grpcClient) QueryAsync(params types.RequestQuery) *ReqRes {
+	req := types.ToRequestQuery(params)
 	res, err := cli.client.Query(context.Background(), req.GetQuery(), grpc.FailFast(true))
 	if err != nil {
 		cli.StopForError(err)
@@ -263,8 +263,8 @@ func (cli *grpcClient) FlushSync() error {
 	return nil
 }
 
-func (cli *grpcClient) InfoSync() (resInfo types.ResponseInfo, err error) {
-	reqres := cli.InfoAsync()
+func (cli *grpcClient) InfoSync(req types.RequestInfo) (resInfo types.ResponseInfo, err error) {
+	reqres := cli.InfoAsync(req)
 	if err = cli.Error(); err != nil {
 		return resInfo, err
 	}
diff --git a/client/local_client.go b/client/local_client.go
index 6bf455c6b..8494a468f 100644
--- a/client/local_client.go
+++ b/client/local_client.go
@@ -49,12 +49,12 @@ func (app *localClient) EchoAsync(msg string) *ReqRes {
 	)
 }
 
-func (app *localClient) InfoAsync() *ReqRes {
+func (app *localClient) InfoAsync(req types.RequestInfo) *ReqRes {
 	app.mtx.Lock()
-	resInfo := app.Application.Info()
+	resInfo := app.Application.Info(req)
 	app.mtx.Unlock()
 	return app.callback(
-		types.ToRequestInfo(),
+		types.ToRequestInfo(req),
 		types.ToResponseInfo(resInfo),
 	)
 }
@@ -150,10 +150,10 @@ func (app *localClient) EchoSync(msg string) (res types.Result) {
 	return types.OK.SetData([]byte(msg))
 }
 
-func (app *localClient) InfoSync() (resInfo types.ResponseInfo, err error) {
+func (app *localClient) InfoSync(req types.RequestInfo) (resInfo types.ResponseInfo, err error) {
 	app.mtx.Lock()
 	defer app.mtx.Unlock()
-	resInfo = app.Application.Info()
+	resInfo = app.Application.Info(req)
 	return resInfo, nil
 }
 
diff --git a/client/socket_client.go b/client/socket_client.go
index 4c7265cd0..fd9d0ae9a 100644
--- a/client/socket_client.go
+++ b/client/socket_client.go
@@ -233,8 +233,8 @@ func (cli *socketClient) FlushAsync() *ReqRes {
 	return cli.queueRequest(types.ToRequestFlush())
 }
 
-func (cli *socketClient) InfoAsync() *ReqRes {
-	return cli.queueRequest(types.ToRequestInfo())
+func (cli *socketClient) InfoAsync(req types.RequestInfo) *ReqRes {
+	return cli.queueRequest(types.ToRequestInfo(req))
 }
 
 func (cli *socketClient) SetOptionAsync(key string, value string) *ReqRes {
@@ -290,8 +290,8 @@ func (cli *socketClient) FlushSync() error {
 	return cli.Error()
 }
 
-func (cli *socketClient) InfoSync() (resInfo types.ResponseInfo, err error) {
-	reqres := cli.queueRequest(types.ToRequestInfo())
+func (cli *socketClient) InfoSync(req types.RequestInfo) (resInfo types.ResponseInfo, err error) {
+	reqres := cli.queueRequest(types.ToRequestInfo(req))
 	cli.FlushSync()
 	if err := cli.Error(); err != nil {
 		return resInfo, err
diff --git a/cmd/abci-cli/abci-cli.go b/cmd/abci-cli/abci-cli.go
index b96c0346e..c73169499 100644
--- a/cmd/abci-cli/abci-cli.go
+++ b/cmd/abci-cli/abci-cli.go
@@ -250,7 +250,12 @@ func cmdEcho(c *cli.Context) error {
 
 // Get some info from the application
 func cmdInfo(c *cli.Context) error {
-	resInfo, err := client.InfoSync()
+	args := c.Args()
+	var version string
+	if len(args) == 1 {
+		version = args[0]
+	}
+	resInfo, err := client.InfoSync(types.RequestInfo{version})
 	if err != nil {
 		return err
 	}
diff --git a/example/counter/counter.go b/example/counter/counter.go
index c4e4e267a..d2478ae28 100644
--- a/example/counter/counter.go
+++ b/example/counter/counter.go
@@ -19,7 +19,7 @@ func NewCounterApplication(serial bool) *CounterApplication {
 	return &CounterApplication{serial: serial}
 }
 
-func (app *CounterApplication) Info() types.ResponseInfo {
+func (app *CounterApplication) Info(req types.RequestInfo) types.ResponseInfo {
 	return types.ResponseInfo{Data: cmn.Fmt("{\"hashes\":%v,\"txs\":%v}", app.hashCount, app.txCount)}
 }
 
diff --git a/example/dummy/dummy.go b/example/dummy/dummy.go
index 4485deac8..5db71f96c 100644
--- a/example/dummy/dummy.go
+++ b/example/dummy/dummy.go
@@ -20,7 +20,7 @@ func NewDummyApplication() *DummyApplication {
 	return &DummyApplication{state: state}
 }
 
-func (app *DummyApplication) Info() (resInfo types.ResponseInfo) {
+func (app *DummyApplication) Info(req types.RequestInfo) (resInfo types.ResponseInfo) {
 	return types.ResponseInfo{Data: cmn.Fmt("{\"size\":%v}", app.state.Size())}
 }
 
diff --git a/example/dummy/dummy_test.go b/example/dummy/dummy_test.go
index a616025e1..fa9d531b7 100644
--- a/example/dummy/dummy_test.go
+++ b/example/dummy/dummy_test.go
@@ -80,7 +80,7 @@ func TestPersistentDummyInfo(t *testing.T) {
 	dummy := NewPersistentDummyApplication(dir)
 	height := uint64(0)
 
-	resInfo := dummy.Info()
+	resInfo := dummy.Info(types.RequestInfo{})
 	if resInfo.LastBlockHeight != height {
 		t.Fatalf("expected height of %d, got %d", height, resInfo.LastBlockHeight)
 	}
@@ -95,7 +95,7 @@ func TestPersistentDummyInfo(t *testing.T) {
 	dummy.EndBlock(height)
 	dummy.Commit()
 
-	resInfo = dummy.Info()
+	resInfo = dummy.Info(types.RequestInfo{})
 	if resInfo.LastBlockHeight != height {
 		t.Fatalf("expected height of %d, got %d", height, resInfo.LastBlockHeight)
 	}
diff --git a/example/dummy/persistent_dummy.go b/example/dummy/persistent_dummy.go
index 371cf4ce4..d392be53c 100644
--- a/example/dummy/persistent_dummy.go
+++ b/example/dummy/persistent_dummy.go
@@ -55,8 +55,8 @@ func (app *PersistentDummyApplication) SetLogger(l log.Logger) {
 	app.logger = l
 }
 
-func (app *PersistentDummyApplication) Info() (resInfo types.ResponseInfo) {
-	resInfo = app.app.Info()
+func (app *PersistentDummyApplication) Info(req types.RequestInfo) (resInfo types.ResponseInfo) {
+	resInfo = app.app.Info(req)
 	lastBlock := LoadLastBlock(app.db)
 	resInfo.LastBlockHeight = lastBlock.Height
 	resInfo.LastBlockAppHash = lastBlock.AppHash
diff --git a/server/socket_server.go b/server/socket_server.go
index 4b64a5f0d..304a2c7f7 100644
--- a/server/socket_server.go
+++ b/server/socket_server.go
@@ -169,7 +169,7 @@ func (s *SocketServer) handleRequest(req *types.Request, responses chan<- *types
 	case *types.Request_Flush:
 		responses <- types.ToResponseFlush()
 	case *types.Request_Info:
-		resInfo := s.app.Info()
+		resInfo := s.app.Info(*r.Info)
 		responses <- types.ToResponseInfo(resInfo)
 	case *types.Request_SetOption:
 		so := r.SetOption
diff --git a/types/application.go b/types/application.go
index b596685c8..3d9716b74 100644
--- a/types/application.go
+++ b/types/application.go
@@ -8,7 +8,7 @@ import (
 // to be driven by a blockchain-based replication engine via the ABCI
 type Application interface {
 	// Info/Query Connection
-	Info() ResponseInfo                              // Return application info
+	Info(RequestInfo) ResponseInfo                   // Return application info
 	SetOption(key string, value string) (log string) // Set application option
 	Query(RequestQuery) ResponseQuery                // Query for state
 
@@ -43,7 +43,7 @@ func (app *GRPCApplication) Flush(ctx context.Context, req *RequestFlush) (*Resp
 }
 
 func (app *GRPCApplication) Info(ctx context.Context, req *RequestInfo) (*ResponseInfo, error) {
-	resInfo := app.app.Info()
+	resInfo := app.app.Info(*req)
 	return &resInfo, nil
 }
 
diff --git a/types/base_app.go b/types/base_app.go
index 71c99cc2f..94607e9ab 100644
--- a/types/base_app.go
+++ b/types/base_app.go
@@ -7,7 +7,7 @@ func NewBaseApplication() *BaseApplication {
 	return &BaseApplication{}
 }
 
-func (app *BaseApplication) Info() (resInfo ResponseInfo) {
+func (app *BaseApplication) Info(req RequestInfo) (resInfo ResponseInfo) {
 	return
 }
 
@@ -27,14 +27,14 @@ func (app *BaseApplication) Commit() Result {
 	return NewResultOK([]byte("nil"), "")
 }
 
-func (app *BaseApplication) Query(reqQuery RequestQuery) (resQuery ResponseQuery) {
+func (app *BaseApplication) Query(req RequestQuery) (resQuery ResponseQuery) {
 	return
 }
 
-func (app *BaseApplication) InitChain(reqInitChain RequestInitChain) {
+func (app *BaseApplication) InitChain(req RequestInitChain) {
 }
 
-func (app *BaseApplication) BeginBlock(reqBeginBlock RequestBeginBlock) {
+func (app *BaseApplication) BeginBlock(req RequestBeginBlock) {
 }
 
 func (app *BaseApplication) EndBlock(height uint64) (resEndBlock ResponseEndBlock) {
diff --git a/types/messages.go b/types/messages.go
index 7918e0eff..be272c387 100644
--- a/types/messages.go
+++ b/types/messages.go
@@ -19,9 +19,9 @@ func ToRequestFlush() *Request {
 	}
 }
 
-func ToRequestInfo() *Request {
+func ToRequestInfo(req RequestInfo) *Request {
 	return &Request{
-		Value: &Request_Info{&RequestInfo{}},
+		Value: &Request_Info{&req},
 	}
 }
 
diff --git a/types/types.pb.go b/types/types.pb.go
index f59664530..4ca304ac7 100644
--- a/types/types.pb.go
+++ b/types/types.pb.go
@@ -61,64 +61,6 @@ var _ = math.Inf
 // proto package needs to be updated.
 const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package
 
-// Not being used
-// Could be added to request/response
-// so we don't have to type switch
-// (would be twice as fast, but we're talking about 15ns)
-type MessageType int32
-
-const (
-	MessageType_NullMessage MessageType = 0
-	MessageType_Echo        MessageType = 1
-	MessageType_Flush       MessageType = 2
-	MessageType_Info        MessageType = 3
-	MessageType_SetOption   MessageType = 4
-	MessageType_Exception   MessageType = 5
-	MessageType_DeliverTx   MessageType = 17
-	MessageType_CheckTx     MessageType = 18
-	MessageType_Commit      MessageType = 19
-	MessageType_Query       MessageType = 20
-	MessageType_InitChain   MessageType = 21
-	MessageType_BeginBlock  MessageType = 22
-	MessageType_EndBlock    MessageType = 23
-)
-
-var MessageType_name = map[int32]string{
-	0:  "NullMessage",
-	1:  "Echo",
-	2:  "Flush",
-	3:  "Info",
-	4:  "SetOption",
-	5:  "Exception",
-	17: "DeliverTx",
-	18: "CheckTx",
-	19: "Commit",
-	20: "Query",
-	21: "InitChain",
-	22: "BeginBlock",
-	23: "EndBlock",
-}
-var MessageType_value = map[string]int32{
-	"NullMessage": 0,
-	"Echo":        1,
-	"Flush":       2,
-	"Info":        3,
-	"SetOption":   4,
-	"Exception":   5,
-	"DeliverTx":   17,
-	"CheckTx":     18,
-	"Commit":      19,
-	"Query":       20,
-	"InitChain":   21,
-	"BeginBlock":  22,
-	"EndBlock":    23,
-}
-
-func (x MessageType) String() string {
-	return proto.EnumName(MessageType_name, int32(x))
-}
-func (MessageType) EnumDescriptor() ([]byte, []int) { return fileDescriptor0, []int{0} }
-
 type CodeType int32
 
 const (
@@ -225,7 +167,7 @@ var CodeType_value = map[string]int32{
 func (x CodeType) String() string {
 	return proto.EnumName(CodeType_name, int32(x))
 }
-func (CodeType) EnumDescriptor() ([]byte, []int) { return fileDescriptor0, []int{1} }
+func (CodeType) EnumDescriptor() ([]byte, []int) { return fileDescriptor0, []int{0} }
 
 type Request struct {
 	// Types that are valid to be assigned to Value:
@@ -652,6 +594,7 @@ func (*RequestFlush) ProtoMessage()               {}
 func (*RequestFlush) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{2} }
 
 type RequestInfo struct {
+	Version string `protobuf:"bytes,1,opt,name=version" json:"version,omitempty"`
 }
 
 func (m *RequestInfo) Reset()                    { *m = RequestInfo{} }
@@ -659,6 +602,13 @@ func (m *RequestInfo) String() string            { return proto.CompactTextStrin
 func (*RequestInfo) ProtoMessage()               {}
 func (*RequestInfo) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{3} }
 
+func (m *RequestInfo) GetVersion() string {
+	if m != nil {
+		return m.Version
+	}
+	return ""
+}
+
 type RequestSetOption struct {
 	Key   string `protobuf:"bytes,1,opt,name=key" json:"key,omitempty"`
 	Value string `protobuf:"bytes,2,opt,name=value" json:"value,omitempty"`
@@ -1523,7 +1473,7 @@ func (*ResponseBeginBlock) ProtoMessage()               {}
 func (*ResponseBeginBlock) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{23} }
 
 type ResponseEndBlock struct {
-	Diffs []*Validator `protobuf:"bytes,4,rep,name=diffs" json:"diffs,omitempty"`
+	Diffs []*Validator `protobuf:"bytes,1,rep,name=diffs" json:"diffs,omitempty"`
 }
 
 func (m *ResponseEndBlock) Reset()                    { *m = ResponseEndBlock{} }
@@ -1720,7 +1670,6 @@ func init() {
 	proto.RegisterType((*BlockID)(nil), "types.BlockID")
 	proto.RegisterType((*PartSetHeader)(nil), "types.PartSetHeader")
 	proto.RegisterType((*Validator)(nil), "types.Validator")
-	proto.RegisterEnum("types.MessageType", MessageType_name, MessageType_value)
 	proto.RegisterEnum("types.CodeType", CodeType_name, CodeType_value)
 }
 
@@ -2129,112 +2078,107 @@ var _ABCIApplication_serviceDesc = grpc.ServiceDesc{
 func init() { proto.RegisterFile("types/types.proto", fileDescriptor0) }
 
 var fileDescriptor0 = []byte{
-	// 1697 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0xac, 0x58, 0x4b, 0x6f, 0x1b, 0x47,
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+	0xeb, 0x37, 0x4d, 0x9d, 0x28, 0x16, 0xbd, 0xa2, 0x0c, 0xeb, 0xbf, 0x47, 0x6c, 0x15, 0x07, 0xb5,
+	0xd0, 0x1f, 0x1a, 0x5a, 0x83, 0x4e, 0xc2, 0x16, 0xba, 0x7f, 0x6a, 0xa8, 0x0f, 0xeb, 0x19, 0xa6,
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+	0xec, 0x7b, 0x72, 0x03, 0xde, 0xff, 0xee, 0x41, 0x4d, 0x74, 0xf8, 0x82, 0x67, 0x6f, 0xbf, 0x68,
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+	0x85, 0xfb, 0xa5, 0x03, 0x28, 0xb7, 0x4f, 0x7a, 0x77, 0xd9, 0x83, 0xb8, 0x5f, 0x3a, 0x85, 0xa2,
+	0x87, 0xd0, 0x8c, 0x7a, 0x73, 0xf1, 0xb3, 0xb8, 0x5f, 0x32, 0x88, 0xf2, 0xf0, 0xc8, 0xb6, 0x5b,
+	0xf4, 0xda, 0xed, 0x17, 0xce, 0x96, 0xe8, 0x01, 0x34, 0x54, 0xdb, 0x2b, 0x7c, 0x51, 0xf7, 0x8b,
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+	0x7a, 0x12, 0x95, 0x3e, 0x98, 0xfb, 0xe5, 0x13, 0x2a, 0x7a, 0x04, 0xad, 0xe4, 0x15, 0x54, 0xfc,
+	0x6c, 0xee, 0x97, 0x0d, 0xa9, 0xe7, 0x0d, 0xf1, 0x8f, 0xcc, 0xfd, 0xbf, 0x03, 0x00, 0x00, 0xff,
+	0xff, 0xbd, 0xb6, 0xa5, 0xad, 0xa6, 0x11, 0x00, 0x00,
 }
diff --git a/types/types.proto b/types/types.proto
index 7abc354d9..802d8fc5c 100644
--- a/types/types.proto
+++ b/types/types.proto
@@ -73,6 +73,7 @@ message RequestFlush {
 }
 
 message RequestInfo {
+    string version = 1;
 }
 
 message RequestSetOption{