grpc support

cmd/tile38-server/main.go

@@ -5,15 +5,21 @@ import (
 	"fmt"
 	"io"
 	"io/ioutil"
+	"net"
 	"net/http"
 	"os"
 	"runtime"
 	"strconv"
 	"strings"
 
+	"golang.org/x/net/context"
+
+	"google.golang.org/grpc"
+
 	"github.com/tidwall/tile38/controller"
 	"github.com/tidwall/tile38/controller/log"
 	"github.com/tidwall/tile38/core"
+	"github.com/tidwall/tile38/hservice"
 )
 
 var (
@@ -26,15 +32,21 @@ var (
 	quiet       bool
 )
 
-// Fire up a webhook test server by using the --webhook-consumer-port
+// Fire up a webhook test server by using the --webhook-consumer-http-port
 // for example
-//   $ ./tile38-server --webhook-consumer-port 9999
+//   $ ./tile38-server --webhook-http-consumer-port 9999
 //
 // The create hooks like such...
 //   SETHOOK myhook http://localhost:9999/myhook NEARBY mykey FENCE POINT 33.5 -115.5 1000
 
+type hserver struct{}
+
+func (s *hserver) Send(ctx context.Context, in *hservice.MessageRequest) (*hservice.MessageReply, error) {
+	return &hservice.MessageReply{true}, nil
+}
+
 func main() {
-	if len(os.Args) == 3 && os.Args[1] == "--webhook-consumer-port" {
+	if len(os.Args) == 3 && os.Args[1] == "--webhook-http-consumer-port" {
 		log.Default = log.New(os.Stderr, &log.Config{})
 		port, err := strconv.ParseUint(os.Args[2], 10, 16)
 		if err != nil {
@@ -43,8 +55,7 @@ func main() {
 		http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
 			data, err := ioutil.ReadAll(r.Body)
 			if err != nil {
-				log.Error(err)
-				return
+				log.Fatal(err)
 			}
 			log.HTTPf("http: %s : %s", r.URL.Path, string(data))
 		})
@@ -55,6 +66,26 @@ func main() {
 		return
 	}
 
+	if len(os.Args) == 3 && os.Args[1] == "--webhook-grpc-consumer-port" {
+		log.Default = log.New(os.Stderr, &log.Config{})
+		port, err := strconv.ParseUint(os.Args[2], 10, 16)
+		if err != nil {
+			log.Fatal(err)
+		}
+
+		lis, err := net.Listen("tcp", fmt.Sprintf(":%d", port))
+		if err != nil {
+			log.Fatal(err)
+		}
+		s := grpc.NewServer()
+		hservice.RegisterHookServiceServer(s, &hserver{})
+		log.Infof("webhook server grpc://localhost:%d/", port)
+		if err := s.Serve(lis); err != nil {
+			log.Fatal(err)
+		}
+		return
+	}
+
 	// parse non standard args.
 	nargs := []string{os.Args[0]}
 	for i := 1; i < len(os.Args); i++ {

controller/endpoint/disque.go

@@ -13,7 +13,6 @@ import (
 
 const (
 	disqueExpiresAfter = time.Second * 30
-	disqueDialTimeout  = time.Second * 10
 )
 
 type DisqueEndpointConn struct {
@@ -64,7 +63,7 @@ func (conn *DisqueEndpointConn) Send(msg string) error {
 	if conn.conn == nil {
 		addr := fmt.Sprintf("%s:%d", conn.ep.Disque.Host, conn.ep.Disque.Port)
 		var err error
-		conn.conn, err = net.DialTimeout("tcp", addr, disqueDialTimeout)
+		conn.conn, err = net.Dial("tcp", addr)
 		if err != nil {
 			return err
 		}

controller/endpoint/endpoint.go

@@ -15,12 +15,17 @@ type EndpointProtocol string
 const (
 	HTTP   = EndpointProtocol("http")   // HTTP
 	Disque = EndpointProtocol("disque") // Disque
+	GRPC   = EndpointProtocol("grpc")   // GRPC
 )
 
 // Endpoint represents an endpoint.
 type Endpoint struct {
 	Protocol EndpointProtocol
 	Original string
+	GRPC     struct {
+		Host string
+		Port int
+	}
 	Disque struct {
 		Host      string
 		Port      int
@@ -86,6 +91,8 @@ func (epc *EndpointManager) Send(endpoint, val string) error {
 			conn = newHTTPEndpointConn(ep)
 		case Disque:
 			conn = newDisqueEndpointConn(ep)
+		case GRPC:
+			conn = newGRPCEndpointConn(ep)
 		}
 		epc.conns[endpoint] = conn
 	}
@@ -93,41 +100,6 @@ func (epc *EndpointManager) Send(endpoint, val string) error {
 	return conn.Send(val)
 }
 
-/*
-func (conn *endpointConn) Expired() bool {
-	conn.mu.Lock()
-	defer conn.mu.Unlock()
-	println("is expired?", conn.ex)
-	return conn.ex
-}
-
-func (conn *endpointConn) Send(val string) error {
-	conn.mu.Lock()
-	defer conn.mu.Unlock()
-
-	return nil
-}
-*/
-/*
-func (ep *Endpoint) Open() {
-	ep.mu.Lock()
-	defer ep.mu.Unlock()
-	println("open " + ep.Original)
-	// Even though open is called we should wait until the a messages
-	// is sent before establishing a network connection.
-}
-
-func (ep *Endpoint) Close() {
-	ep.mu.Lock()
-	defer ep.mu.Unlock()
-	println("close " + ep.Original)
-	// Make sure to forece close the network connection here.
-}
-
-func (ep *Endpoint) Send() error {
-	return nil
-}
-*/
 func parseEndpoint(s string) (Endpoint, error) {
 	var endpoint Endpoint
 	endpoint.Original = s
@@ -140,6 +112,8 @@ func parseEndpoint(s string) (Endpoint, error) {
 		endpoint.Protocol = HTTP
 	case strings.HasPrefix(s, "disque:"):
 		endpoint.Protocol = Disque
+	case strings.HasPrefix(s, "grpc:"):
+		endpoint.Protocol = GRPC
 	}
 	s = s[strings.Index(s, ":")+1:]
 	if !strings.HasPrefix(s, "//") {
@@ -151,6 +125,23 @@ func parseEndpoint(s string) (Endpoint, error) {
 	if s == "" {
 		return endpoint, errors.New("missing host")
 	}
+	if endpoint.Protocol == GRPC {
+		dp := strings.Split(s, ":")
+		switch len(dp) {
+		default:
+			return endpoint, errors.New("invalid grpc url")
+		case 1:
+			endpoint.GRPC.Host = dp[0]
+			endpoint.GRPC.Port = 80
+		case 2:
+			endpoint.GRPC.Host = dp[0]
+			n, err := strconv.ParseUint(dp[1], 10, 16)
+			if err != nil {
+				return endpoint, errors.New("invalid grpc url")
+			}
+			endpoint.GRPC.Port = int(n)
+		}
+	}
 	if endpoint.Protocol == Disque {
 		dp := strings.Split(s, ":")
 		switch len(dp) {

controller/endpoint/grpc.go

@@ -0,0 +1,83 @@
+package endpoint
+
+import (
+	"errors"
+	"fmt"
+	"sync"
+	"time"
+
+	"golang.org/x/net/context"
+
+	"github.com/tidwall/tile38/hservice"
+
+	"google.golang.org/grpc"
+)
+
+const (
+	grpcExpiresAfter = time.Second * 30
+)
+
+type GRPCEndpointConn struct {
+	mu    sync.Mutex
+	ep    Endpoint
+	ex    bool
+	t     time.Time
+	conn  *grpc.ClientConn
+	sconn hservice.HookServiceClient
+}
+
+func newGRPCEndpointConn(ep Endpoint) *GRPCEndpointConn {
+	return &GRPCEndpointConn{
+		ep: ep,
+		t:  time.Now(),
+	}
+}
+
+func (conn *GRPCEndpointConn) Expired() bool {
+	conn.mu.Lock()
+	defer conn.mu.Unlock()
+	if !conn.ex {
+		if time.Now().Sub(conn.t) > grpcExpiresAfter {
+			if conn.conn != nil {
+				conn.close()
+			}
+			conn.ex = true
+		}
+	}
+	return conn.ex
+}
+func (conn *GRPCEndpointConn) close() {
+	if conn.conn != nil {
+		conn.conn.Close()
+		conn.conn = nil
+	}
+}
+
+func (conn *GRPCEndpointConn) Send(msg string) error {
+	conn.mu.Lock()
+	defer conn.mu.Unlock()
+	if conn.ex {
+		return errors.New("expired")
+	}
+	conn.t = time.Now()
+	if conn.conn == nil {
+		addr := fmt.Sprintf("%s:%d", conn.ep.GRPC.Host, conn.ep.GRPC.Port)
+		var err error
+		conn.conn, err = grpc.Dial(addr, grpc.WithInsecure())
+		if err != nil {
+			conn.close()
+			return err
+		}
+		conn.sconn = hservice.NewHookServiceClient(conn.conn)
+	}
+	r, err := conn.sconn.Send(context.Background(), &hservice.MessageRequest{msg})
+	if err != nil {
+		conn.close()
+		return err
+	}
+	if !r.Ok {
+		conn.close()
+		return errors.New("invalid grpc reply")
+	}
+	return nil
+}

hservice/gen.sh

@@ -0,0 +1,4 @@
+#!/bin/bash
+
+cd $(dirname "${BASH_SOURCE[0]}")
+protoc --go_out=plugins=grpc,import_path=hservice:. *.proto

hservice/hservice.pb.go

@@ -0,0 +1,151 @@
+// Code generated by protoc-gen-go.
+// source: hservice.proto
+// DO NOT EDIT!
+
+/*
+Package hservice is a generated protocol buffer package.
+
+It is generated from these files:
+	hservice.proto
+
+It has these top-level messages:
+	MessageRequest
+	MessageReply
+*/
+package hservice
+
+import proto "github.com/golang/protobuf/proto"
+import fmt "fmt"
+import math "math"
+
+import (
+	context "golang.org/x/net/context"
+	grpc "google.golang.org/grpc"
+)
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package
+
+// The request message containing the message value
+type MessageRequest struct {
+	Value string `protobuf:"bytes,1,opt,name=value" json:"value,omitempty"`
+}
+
+func (m *MessageRequest) Reset()                    { *m = MessageRequest{} }
+func (m *MessageRequest) String() string            { return proto.CompactTextString(m) }
+func (*MessageRequest) ProtoMessage()               {}
+func (*MessageRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{0} }
+
+// The response message containing an ok (true or false)
+type MessageReply struct {
+	Ok bool `protobuf:"varint,1,opt,name=ok" json:"ok,omitempty"`
+}
+
+func (m *MessageReply) Reset()                    { *m = MessageReply{} }
+func (m *MessageReply) String() string            { return proto.CompactTextString(m) }
+func (*MessageReply) ProtoMessage()               {}
+func (*MessageReply) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{1} }
+
+func init() {
+	proto.RegisterType((*MessageRequest)(nil), "hservice.MessageRequest")
+	proto.RegisterType((*MessageReply)(nil), "hservice.MessageReply")
+}
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ context.Context
+var _ grpc.ClientConn
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the grpc package it is being compiled against.
+const _ = grpc.SupportPackageIsVersion3
+
+// Client API for HookService service
+
+type HookServiceClient interface {
+	// Sends a greeting
+	Send(ctx context.Context, in *MessageRequest, opts ...grpc.CallOption) (*MessageReply, error)
+}
+
+type hookServiceClient struct {
+	cc *grpc.ClientConn
+}
+
+func NewHookServiceClient(cc *grpc.ClientConn) HookServiceClient {
+	return &hookServiceClient{cc}
+}
+
+func (c *hookServiceClient) Send(ctx context.Context, in *MessageRequest, opts ...grpc.CallOption) (*MessageReply, error) {
+	out := new(MessageReply)
+	err := grpc.Invoke(ctx, "/hservice.HookService/Send", in, out, c.cc, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+// Server API for HookService service
+
+type HookServiceServer interface {
+	// Sends a greeting
+	Send(context.Context, *MessageRequest) (*MessageReply, error)
+}
+
+func RegisterHookServiceServer(s *grpc.Server, srv HookServiceServer) {
+	s.RegisterService(&_HookService_serviceDesc, srv)
+}
+
+func _HookService_Send_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(MessageRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(HookServiceServer).Send(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/hservice.HookService/Send",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(HookServiceServer).Send(ctx, req.(*MessageRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+var _HookService_serviceDesc = grpc.ServiceDesc{
+	ServiceName: "hservice.HookService",
+	HandlerType: (*HookServiceServer)(nil),
+	Methods: []grpc.MethodDesc{
+		{
+			MethodName: "Send",
+			Handler:    _HookService_Send_Handler,
+		},
+	},
+	Streams:  []grpc.StreamDesc{},
+	Metadata: fileDescriptor0,
+}
+
+func init() { proto.RegisterFile("hservice.proto", fileDescriptor0) }
+
+var fileDescriptor0 = []byte{
+	// 168 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0xe2, 0xe2, 0xcb, 0x28, 0x4e, 0x2d,
+	0x2a, 0xcb, 0x4c, 0x4e, 0xd5, 0x2b, 0x28, 0xca, 0x2f, 0xc9, 0x17, 0xe2, 0x80, 0xf1, 0x95, 0xd4,
+	0xb8, 0xf8, 0x7c, 0x53, 0x8b, 0x8b, 0x13, 0xd3, 0x53, 0x83, 0x52, 0x0b, 0x4b, 0x53, 0x8b, 0x4b,
+	0x84, 0x44, 0xb8, 0x58, 0xcb, 0x12, 0x73, 0x4a, 0x53, 0x25, 0x18, 0x15, 0x18, 0x35, 0x38, 0x83,
+	0x20, 0x1c, 0x25, 0x39, 0x2e, 0x1e, 0xb8, 0xba, 0x82, 0x9c, 0x4a, 0x21, 0x3e, 0x2e, 0xa6, 0xfc,
+	0x6c, 0xb0, 0x12, 0x8e, 0x20, 0xa6, 0xfc, 0x6c, 0x23, 0x4f, 0x2e, 0x6e, 0x8f, 0xfc, 0xfc, 0xec,
+	0x60, 0x88, 0xb1, 0x42, 0x56, 0x5c, 0x2c, 0xc1, 0xa9, 0x79, 0x29, 0x42, 0x12, 0x7a, 0x70, 0x9b,
+	0x51, 0xad, 0x91, 0x12, 0xc3, 0x22, 0x53, 0x90, 0x53, 0xa9, 0xc4, 0xe0, 0xa4, 0xc9, 0x25, 0x9c,
+	0x9c, 0x9f, 0xab, 0x57, 0x92, 0x99, 0x93, 0x6a, 0x6c, 0x01, 0x57, 0xe5, 0x24, 0x80, 0x64, 0x7e,
+	0x00, 0xc8, 0x17, 0x01, 0x8c, 0x49, 0x6c, 0x60, 0xef, 0x18, 0x03, 0x02, 0x00, 0x00, 0xff, 0xff,
+	0x6d, 0xd0, 0x2b, 0x13, 0xe0, 0x00, 0x00, 0x00,
+}

hservice/hservice.proto

@@ -0,0 +1,23 @@
+syntax = "proto3";
+
+option java_multiple_files = true;
+option java_package = "com.tile38.hservice";
+option java_outer_classname = "HookServiceProto";
+
+package hservice;
+
+// The greeting service definition.
+service HookService {
+  // Sends a greeting
+  rpc Send (MessageRequest) returns (MessageReply) {}
+}
+
+// The request message containing the message value
+message MessageRequest {
+  string value = 1;
+}
+
+// The response message containing an ok (true or false)
+message MessageReply {
+  bool ok = 1;
+}