Merge pull request #97 from rst0git/optimize-stats-rpc

Optimize stats and rpc

Makefile

@@ -7,7 +7,7 @@ all: build
 lint:
 	golangci-lint run ./...
 
-build:
+build: rpc/rpc.pb.go stats/stats.pb.go
 	$(GO) build -v ./...
 	# Build crit binary
 	$(MAKE) -C crit bin/crit
@@ -21,6 +21,18 @@ coverage:
 codecov:
 	$(MAKE) -C test codecov
 
+rpc/rpc.proto:
+	curl -sSL https://raw.githubusercontent.com/checkpoint-restore/criu/master/images/rpc.proto -o $@
+
+rpc/rpc.pb.go: rpc/rpc.proto
+	protoc --go_out=. --go_opt=M$^=rpc/ $^
+
+stats/stats.proto:
+	curl -sSL https://raw.githubusercontent.com/checkpoint-restore/criu/master/images/stats.proto -o $@
+
+stats/stats.pb.go: stats/stats.proto
+	protoc --go_out=. --go_opt=M$^=stats/ $^
+
 vendor:
 	GO111MODULE=on $(GO) mod tidy
 	GO111MODULE=on $(GO) mod vendor

crit/Makefile

@@ -17,7 +17,8 @@ update-proto:
 	rm ./images/*.proto || true
 	git clone --depth 1 --branch master https://github.com/checkpoint-restore/criu criu-temp
 	cp criu-temp/images/*.proto ./images/
-	rm -rf criu-temp
+	# rpc.proto is not an image and it is used only to communicate criu-service and swrk.
+	rm -rf criu-temp images/rpc.proto
 	# To prevent namespace conflict with proto files
 	# in github.com/letsencrypt/boulder, we prepend
 	# a prefix to the filenames.

features.go

@@ -3,7 +3,7 @@ package criu
 import (
 	"fmt"
 
-	"github.com/checkpoint-restore/go-criu/v6/crit/images"
+	"github.com/checkpoint-restore/go-criu/v6/rpc"
 )
 
 // Feature checking in go-criu is based on the libcriu feature checking function.
@@ -26,9 +26,9 @@ import (
 // Available features will be set to true when the function
 // returns successfully. Missing features will be set to false.
 
-func (c *Criu) FeatureCheck(features *images.CriuFeatures) (*images.CriuFeatures, error) {
+func (c *Criu) FeatureCheck(features *rpc.CriuFeatures) (*rpc.CriuFeatures, error) {
 	resp, err := c.doSwrkWithResp(
-		images.CriuReqType_FEATURE_CHECK,
+		rpc.CriuReqType_FEATURE_CHECK,
 		nil,
 		nil,
 		features,
@@ -37,7 +37,7 @@ func (c *Criu) FeatureCheck(features *images.CriuFeatures) (*images.CriuFeatures
 		return nil, err
 	}
 
-	if resp.GetType() != images.CriuReqType_FEATURE_CHECK {
+	if resp.GetType() != rpc.CriuReqType_FEATURE_CHECK {
 		return nil, fmt.Errorf("Unexpected CRIU RPC response")
 	}
 

main.go

@@ -8,7 +8,7 @@ import (
 	"strconv"
 	"syscall"
 
-	"github.com/checkpoint-restore/go-criu/v6/crit/images"
+	"github.com/checkpoint-restore/go-criu/v6/rpc"
 	"google.golang.org/protobuf/proto"
 )
 
@@ -86,7 +86,7 @@ func (c *Criu) sendAndRecv(reqB []byte) ([]byte, int, error) {
 	return respB, n, nil
 }
 
-func (c *Criu) doSwrk(reqType images.CriuReqType, opts *images.CriuOpts, nfy Notify) error {
+func (c *Criu) doSwrk(reqType rpc.CriuReqType, opts *rpc.CriuOpts, nfy Notify) error {
 	resp, err := c.doSwrkWithResp(reqType, opts, nfy, nil)
 	if err != nil {
 		return err
@@ -99,10 +99,10 @@ func (c *Criu) doSwrk(reqType images.CriuReqType, opts *images.CriuOpts, nfy Not
 	return nil
 }
 
-func (c *Criu) doSwrkWithResp(reqType images.CriuReqType, opts *images.CriuOpts, nfy Notify, features *images.CriuFeatures) (*images.CriuResp, error) {
-	var resp *images.CriuResp
+func (c *Criu) doSwrkWithResp(reqType rpc.CriuReqType, opts *rpc.CriuOpts, nfy Notify, features *rpc.CriuFeatures) (*rpc.CriuResp, error) {
+	var resp *rpc.CriuResp
 
-	req := images.CriuReq{
+	req := rpc.CriuReq{
 		Type: &reqType,
 		Opts: opts,
 	}
@@ -135,7 +135,7 @@ func (c *Criu) doSwrkWithResp(reqType images.CriuReqType, opts *images.CriuOpts,
 			return nil, err
 		}
 
-		resp = &images.CriuResp{}
+		resp = &rpc.CriuResp{}
 		err = proto.Unmarshal(respB[:respS], resp)
 		if err != nil {
 			return nil, err
@@ -147,7 +147,7 @@ func (c *Criu) doSwrkWithResp(reqType images.CriuReqType, opts *images.CriuOpts,
 		}
 
 		respType := resp.GetType()
-		if respType != images.CriuReqType_NOTIFY {
+		if respType != rpc.CriuReqType_NOTIFY {
 			break
 		}
 		if nfy == nil {
@@ -182,7 +182,7 @@ func (c *Criu) doSwrkWithResp(reqType images.CriuReqType, opts *images.CriuOpts,
 			return resp, err
 		}
 
-		req = images.CriuReq{
+		req = rpc.CriuReq{
 			Type:          &respType,
 			NotifySuccess: proto.Bool(true),
 		}
@@ -192,28 +192,28 @@ func (c *Criu) doSwrkWithResp(reqType images.CriuReqType, opts *images.CriuOpts,
 }
 
 // Dump dumps a process
-func (c *Criu) Dump(opts *images.CriuOpts, nfy Notify) error {
-	return c.doSwrk(images.CriuReqType_DUMP, opts, nfy)
+func (c *Criu) Dump(opts *rpc.CriuOpts, nfy Notify) error {
+	return c.doSwrk(rpc.CriuReqType_DUMP, opts, nfy)
 }
 
 // Restore restores a process
-func (c *Criu) Restore(opts *images.CriuOpts, nfy Notify) error {
-	return c.doSwrk(images.CriuReqType_RESTORE, opts, nfy)
+func (c *Criu) Restore(opts *rpc.CriuOpts, nfy Notify) error {
+	return c.doSwrk(rpc.CriuReqType_RESTORE, opts, nfy)
 }
 
 // PreDump does a pre-dump
-func (c *Criu) PreDump(opts *images.CriuOpts, nfy Notify) error {
-	return c.doSwrk(images.CriuReqType_PRE_DUMP, opts, nfy)
+func (c *Criu) PreDump(opts *rpc.CriuOpts, nfy Notify) error {
+	return c.doSwrk(rpc.CriuReqType_PRE_DUMP, opts, nfy)
 }
 
 // StartPageServer starts the page server
-func (c *Criu) StartPageServer(opts *images.CriuOpts) error {
-	return c.doSwrk(images.CriuReqType_PAGE_SERVER, opts, nil)
+func (c *Criu) StartPageServer(opts *rpc.CriuOpts) error {
+	return c.doSwrk(rpc.CriuReqType_PAGE_SERVER, opts, nil)
 }
 
 // StartPageServerChld starts the page server and returns PID and port
-func (c *Criu) StartPageServerChld(opts *images.CriuOpts) (int, int, error) {
-	resp, err := c.doSwrkWithResp(images.CriuReqType_PAGE_SERVER_CHLD, opts, nil, nil)
+func (c *Criu) StartPageServerChld(opts *rpc.CriuOpts) (int, int, error) {
+	resp, err := c.doSwrkWithResp(rpc.CriuReqType_PAGE_SERVER_CHLD, opts, nil, nil)
 	if err != nil {
 		return 0, 0, err
 	}
@@ -224,12 +224,12 @@ func (c *Criu) StartPageServerChld(opts *images.CriuOpts) (int, int, error) {
 // GetCriuVersion executes the VERSION RPC call and returns the version
 // as an integer. Major * 10000 + Minor * 100 + SubLevel
 func (c *Criu) GetCriuVersion() (int, error) {
-	resp, err := c.doSwrkWithResp(images.CriuReqType_VERSION, nil, nil, nil)
+	resp, err := c.doSwrkWithResp(rpc.CriuReqType_VERSION, nil, nil, nil)
 	if err != nil {
 		return 0, err
 	}
 
-	if resp.GetType() != images.CriuReqType_VERSION {
+	if resp.GetType() != rpc.CriuReqType_VERSION {
 		return 0, fmt.Errorf("Unexpected CRIU RPC response")
 	}
 

phaul/client.go

@@ -7,6 +7,7 @@ import (
 	"github.com/checkpoint-restore/go-criu/v6"
 	"github.com/checkpoint-restore/go-criu/v6/crit"
 	"github.com/checkpoint-restore/go-criu/v6/crit/images"
+	"github.com/checkpoint-restore/go-criu/v6/rpc"
 	"google.golang.org/protobuf/proto"
 )
 
@@ -57,10 +58,10 @@ func isLastIter(iter int, stats *images.DumpStatsEntry, prevStats *images.DumpSt
 // Migrate function
 func (pc *Client) Migrate() error {
 	criu := criu.MakeCriu()
-	psi := images.CriuPageServerInfo{
+	psi := rpc.CriuPageServerInfo{
 		Fd: proto.Int32(int32(pc.cfg.Memfd)),
 	}
-	opts := &images.CriuOpts{
+	opts := &rpc.CriuOpts{
 		Pid:      proto.Int32(int32(pc.cfg.Pid)),
 		LogLevel: proto.Int32(4),
 		LogFile:  proto.String("pre-dump.log"),

phaul/server.go

@@ -7,7 +7,7 @@ import (
 	"path/filepath"
 
 	"github.com/checkpoint-restore/go-criu/v6"
-	"github.com/checkpoint-restore/go-criu/v6/crit/images"
+	"github.com/checkpoint-restore/go-criu/v6/rpc"
 	"golang.org/x/sys/unix"
 	"google.golang.org/protobuf/proto"
 )
@@ -37,10 +37,10 @@ func MakePhaulServer(c Config) (*Server, error) {
 // StartIter phaul.Remote methods
 func (s *Server) StartIter() error {
 	fmt.Printf("S: start iter\n")
-	psi := images.CriuPageServerInfo{
+	psi := rpc.CriuPageServerInfo{
 		Fd: proto.Int32(int32(s.cfg.Memfd)),
 	}
-	opts := &images.CriuOpts{
+	opts := &rpc.CriuOpts{
 		LogLevel: proto.Int32(4),
 		LogFile:  proto.String("ps.log"),
 		Ps:       &psi,