Other: Single instance

This commit is contained in:
James Houlahan
2022-10-12 23:30:43 +02:00
parent fd63611b41
commit 593d86f3a7
16 changed files with 470 additions and 73 deletions

View File

@ -6,7 +6,9 @@ import (
"net"
"time"
"github.com/Masterminds/semver/v3"
"github.com/ProtonMail/proton-bridge/v2/internal/focus/proto"
"github.com/sirupsen/logrus"
"google.golang.org/grpc"
"google.golang.org/grpc/credentials/insecure"
"google.golang.org/protobuf/types/known/emptypb"
@ -27,6 +29,12 @@ func TryRaise() bool {
return false
}
defer func() {
if err := cc.Close(); err != nil {
logrus.WithError(err).Warn("Failed to close focus connection")
}
}()
if _, err := proto.NewFocusClient(cc).Raise(ctx, &emptypb.Empty{}); err != nil {
return false
}
@ -37,3 +45,37 @@ func TryRaise() bool {
return true
}
// TryRaise tries to raise the application by dialing the focus service.
// It returns true if the service is running and the application was told to raise.
func TryVersion() (*semver.Version, bool) {
ctx, cancel := context.WithTimeout(context.Background(), time.Second)
defer cancel()
cc, err := grpc.DialContext(
ctx,
net.JoinHostPort(Host, fmt.Sprint(Port)),
grpc.WithTransportCredentials(insecure.NewCredentials()),
)
if err != nil {
return nil, false
}
defer func() {
if err := cc.Close(); err != nil {
logrus.WithError(err).Warn("Failed to close focus connection")
}
}()
raw, err := proto.NewFocusClient(cc).Version(ctx, &emptypb.Empty{})
if err != nil {
return nil, false
}
version, err := semver.NewVersion(raw.GetVersion())
if err != nil {
return nil, false
}
return version, true
}

View File

@ -3,12 +3,13 @@ package focus
import (
"testing"
"github.com/Masterminds/semver/v3"
"github.com/stretchr/testify/require"
)
func TestFocusRaise(t *testing.T) {
func TestFocus_Raise(t *testing.T) {
// Start the focus service.
service, err := NewService()
service, err := NewService(semver.MustParse("1.2.3"))
require.NoError(t, err)
// Try to dial it, it should succeed.
@ -23,3 +24,14 @@ func TestFocusRaise(t *testing.T) {
// Try to dial it, it should fail.
require.False(t, TryRaise())
}
func TestFocus_Version(t *testing.T) {
// Start the focus service.
_, err := NewService(semver.MustParse("1.2.3"))
require.NoError(t, err)
// Try to dial it, it should succeed.
version, ok := TryVersion()
require.True(t, ok)
require.Equal(t, "1.2.3", version.String())
}

View File

@ -18,17 +18,17 @@
// Code generated by protoc-gen-go. DO NOT EDIT.
// versions:
// protoc-gen-go v1.28.0
// protoc v3.21.3
// protoc v3.21.7
// source: focus.proto
package proto
import (
reflect "reflect"
protoreflect "google.golang.org/protobuf/reflect/protoreflect"
protoimpl "google.golang.org/protobuf/runtime/protoimpl"
emptypb "google.golang.org/protobuf/types/known/emptypb"
reflect "reflect"
sync "sync"
)
const (
@ -38,31 +38,101 @@ const (
_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
)
type VersionResponse struct {
state protoimpl.MessageState
sizeCache protoimpl.SizeCache
unknownFields protoimpl.UnknownFields
Version string `protobuf:"bytes,1,opt,name=version,proto3" json:"version,omitempty"`
}
func (x *VersionResponse) Reset() {
*x = VersionResponse{}
if protoimpl.UnsafeEnabled {
mi := &file_focus_proto_msgTypes[0]
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
ms.StoreMessageInfo(mi)
}
}
func (x *VersionResponse) String() string {
return protoimpl.X.MessageStringOf(x)
}
func (*VersionResponse) ProtoMessage() {}
func (x *VersionResponse) ProtoReflect() protoreflect.Message {
mi := &file_focus_proto_msgTypes[0]
if protoimpl.UnsafeEnabled && x != nil {
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
if ms.LoadMessageInfo() == nil {
ms.StoreMessageInfo(mi)
}
return ms
}
return mi.MessageOf(x)
}
// Deprecated: Use VersionResponse.ProtoReflect.Descriptor instead.
func (*VersionResponse) Descriptor() ([]byte, []int) {
return file_focus_proto_rawDescGZIP(), []int{0}
}
func (x *VersionResponse) GetVersion() string {
if x != nil {
return x.Version
}
return ""
}
var File_focus_proto protoreflect.FileDescriptor
var file_focus_proto_rawDesc = []byte{
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0x6f, 0x33,
}
var (
file_focus_proto_rawDescOnce sync.Once
file_focus_proto_rawDescData = file_focus_proto_rawDesc
)
func file_focus_proto_rawDescGZIP() []byte {
file_focus_proto_rawDescOnce.Do(func() {
file_focus_proto_rawDescData = protoimpl.X.CompressGZIP(file_focus_proto_rawDescData)
})
return file_focus_proto_rawDescData
}
var file_focus_proto_msgTypes = make([]protoimpl.MessageInfo, 1)
var file_focus_proto_goTypes = []interface{}{
(*emptypb.Empty)(nil), // 0: google.protobuf.Empty
(*VersionResponse)(nil), // 0: proto.VersionResponse
(*emptypb.Empty)(nil), // 1: google.protobuf.Empty
}
var file_focus_proto_depIdxs = []int32{
0, // 0: proto.Focus.Raise:input_type -> google.protobuf.Empty
0, // 1: proto.Focus.Raise:output_type -> google.protobuf.Empty
1, // [1:2] is the sub-list for method output_type
0, // [0:1] is the sub-list for method input_type
1, // 0: proto.Focus.Raise:input_type -> google.protobuf.Empty
1, // 1: proto.Focus.Version:input_type -> google.protobuf.Empty
1, // 2: proto.Focus.Raise:output_type -> google.protobuf.Empty
0, // 3: proto.Focus.Version:output_type -> proto.VersionResponse
2, // [2:4] is the sub-list for method output_type
0, // [0:2] is the sub-list for method input_type
0, // [0:0] is the sub-list for extension type_name
0, // [0:0] is the sub-list for extension extendee
0, // [0:0] is the sub-list for field type_name
@ -73,18 +143,33 @@ func file_focus_proto_init() {
if File_focus_proto != nil {
return
}
if !protoimpl.UnsafeEnabled {
file_focus_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
switch v := v.(*VersionResponse); i {
case 0:
return &v.state
case 1:
return &v.sizeCache
case 2:
return &v.unknownFields
default:
return nil
}
}
}
type x struct{}
out := protoimpl.TypeBuilder{
File: protoimpl.DescBuilder{
GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
RawDescriptor: file_focus_proto_rawDesc,
NumEnums: 0,
NumMessages: 0,
NumMessages: 1,
NumExtensions: 0,
NumServices: 1,
},
GoTypes: file_focus_proto_goTypes,
DependencyIndexes: file_focus_proto_depIdxs,
MessageInfos: file_focus_proto_msgTypes,
}.Build()
File_focus_proto = out.File
file_focus_proto_rawDesc = nil

View File

@ -28,4 +28,11 @@ package proto;
//**********************************************************************************************************************≠––
service Focus {
rpc Raise(google.protobuf.Empty) returns (google.protobuf.Empty);
rpc Version(google.protobuf.Empty) returns (VersionResponse);
}
//**********************************************************************************************************************
message VersionResponse {
string version = 1;
}

View File

@ -1,14 +1,13 @@
// Code generated by protoc-gen-go-grpc. DO NOT EDIT.
// versions:
// - protoc-gen-go-grpc v1.2.0
// - protoc v3.21.3
// - protoc v3.21.7
// source: focus.proto
package proto
import (
context "context"
grpc "google.golang.org/grpc"
codes "google.golang.org/grpc/codes"
status "google.golang.org/grpc/status"
@ -25,6 +24,7 @@ const _ = grpc.SupportPackageIsVersion7
// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://pkg.go.dev/google.golang.org/grpc/?tab=doc#ClientConn.NewStream.
type FocusClient interface {
Raise(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*emptypb.Empty, error)
Version(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*VersionResponse, error)
}
type focusClient struct {
@ -44,11 +44,21 @@ func (c *focusClient) Raise(ctx context.Context, in *emptypb.Empty, opts ...grpc
return out, nil
}
func (c *focusClient) Version(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*VersionResponse, error) {
out := new(VersionResponse)
err := c.cc.Invoke(ctx, "/proto.Focus/Version", in, out, opts...)
if err != nil {
return nil, err
}
return out, nil
}
// FocusServer is the server API for Focus service.
// All implementations must embed UnimplementedFocusServer
// for forward compatibility
type FocusServer interface {
Raise(context.Context, *emptypb.Empty) (*emptypb.Empty, error)
Version(context.Context, *emptypb.Empty) (*VersionResponse, error)
mustEmbedUnimplementedFocusServer()
}
@ -59,6 +69,9 @@ type UnimplementedFocusServer struct {
func (UnimplementedFocusServer) Raise(context.Context, *emptypb.Empty) (*emptypb.Empty, error) {
return nil, status.Errorf(codes.Unimplemented, "method Raise not implemented")
}
func (UnimplementedFocusServer) Version(context.Context, *emptypb.Empty) (*VersionResponse, error) {
return nil, status.Errorf(codes.Unimplemented, "method Version not implemented")
}
func (UnimplementedFocusServer) mustEmbedUnimplementedFocusServer() {}
// UnsafeFocusServer may be embedded to opt out of forward compatibility for this service.
@ -90,6 +103,24 @@ func _Focus_Raise_Handler(srv interface{}, ctx context.Context, dec func(interfa
return interceptor(ctx, in, info, handler)
}
func _Focus_Version_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
in := new(emptypb.Empty)
if err := dec(in); err != nil {
return nil, err
}
if interceptor == nil {
return srv.(FocusServer).Version(ctx, in)
}
info := &grpc.UnaryServerInfo{
Server: srv,
FullMethod: "/proto.Focus/Version",
}
handler := func(ctx context.Context, req interface{}) (interface{}, error) {
return srv.(FocusServer).Version(ctx, req.(*emptypb.Empty))
}
return interceptor(ctx, in, info, handler)
}
// Focus_ServiceDesc is the grpc.ServiceDesc for Focus service.
// It's only intended for direct use with grpc.RegisterService,
// and not to be introspected or modified (even as a copy)
@ -101,6 +132,10 @@ var Focus_ServiceDesc = grpc.ServiceDesc{
MethodName: "Raise",
Handler: _Focus_Raise_Handler,
},
{
MethodName: "Version",
Handler: _Focus_Version_Handler,
},
},
Streams: []grpc.StreamDesc{},
Metadata: "focus.proto",

View File

@ -6,6 +6,7 @@ import (
"fmt"
"net"
"github.com/Masterminds/semver/v3"
"github.com/ProtonMail/proton-bridge/v2/internal/focus/proto"
"google.golang.org/grpc"
"google.golang.org/protobuf/types/known/emptypb"
@ -24,11 +25,12 @@ type Service struct {
server *grpc.Server
listener net.Listener
raiseCh chan struct{}
version *semver.Version
}
// NewService creates a new focus service.
// It listens on the local host and port 1042 (by default).
func NewService() (*Service, error) {
func NewService(version *semver.Version) (*Service, error) {
listener, err := net.Listen("tcp", net.JoinHostPort(Host, fmt.Sprint(Port)))
if err != nil {
return nil, fmt.Errorf("failed to listen: %w", err)
@ -38,6 +40,7 @@ func NewService() (*Service, error) {
server: grpc.NewServer(),
listener: listener,
raiseCh: make(chan struct{}, 1),
version: version,
}
proto.RegisterFocusServer(service.server, service)
@ -57,6 +60,13 @@ func (service *Service) Raise(context.Context, *emptypb.Empty) (*emptypb.Empty,
return &emptypb.Empty{}, nil
}
// Version implements the gRPC FocusService interface; it returns the version of the service.
func (service *Service) Version(context.Context, *emptypb.Empty) (*proto.VersionResponse, error) {
return &proto.VersionResponse{
Version: service.version.Original(),
}, nil
}
// GetRaiseCh returns a channel on which events are sent when the application should be raised.
func (service *Service) GetRaiseCh() <-chan struct{} {
return service.raiseCh