QSF是基于GRPC生态圈打造的一个简单、易用、功能强大的服务治理框架。
- 简单易用 易于入门,易于开发,易于集成,,易于发布,易于监控。
- 高性能 基于GRPC(HTTP2、Protocol Buffer)高性能传输。
- 跨平台、多语言 由于采用GRPC,即可很容易部署在Windows/Linux/MacOS等平台,同时也支持各种编程语言的调用。
- 服务发现 除了直连外,目前支持ETCD注册中心。
- 服务治理 目前支持随机、轮询、权重等负载均衡算法,支持限流、熔断、降级等服务保护手段,支持基于prometheus实现的服务监控(可用grafana展示以及做告警),支持基于opentracing实现的服务调用链追踪。
- API网关 目前接入GRPC生态圈的GRPC-GATEWAY。
1、安装GRPC-GO
go get -u google.golang.org/grpc
2、安装ProtocolBuffers
mkdir tmp
cd tmp
git clone https://github.com/google/protobuf
cd protobuf
./autogen.sh
./configure
make
make check
sudo make install
3、安装proto,protoc-gen-go
go get -u github.com/golang/protobuf/{proto,protoc-gen-go}
4、安装GRPC-API-GATEWAY(需要网关就必须安装此依赖)
go get -u github.com/grpc-ecosystem/grpc-gateway/protoc-gen-grpc-gateway
go get -u github.com/grpc-ecosystem/grpc-gateway/protoc-gen-swagger
5、安装QSF
go get github.com/chuangyou/qsf
6、hellowolrd(GRPC服务例子)
proto:
syntax = "proto3";
option java_multiple_files = true;
option java_package = "io.grpc.examples.helloworld";
option java_outer_classname = "HelloWorldProto";
package helloworld;
// The greeting service definition.
service Greeter {
// Sends a greeting
rpc SayHello (HelloRequest) returns (HelloReply) {}
}
// The request message containing the user's name.
message HelloRequest {
string name = 1;
}
// The response message containing the greetings
message HelloReply {
string message = 1;
}
server:
package main
import (
"log"
"net"
"golang.org/x/net/context"
"google.golang.org/grpc"
pb "google.golang.org/grpc/examples/helloworld/helloworld"
"google.golang.org/grpc/reflection"
)
const (
port = ":50051"
)
// server is used to implement helloworld.GreeterServer.
type server struct{}
// SayHello implements helloworld.GreeterServer
func (s *server) SayHello(ctx context.Context, in *pb.HelloRequest) (*pb.HelloReply, error) {
return &pb.HelloReply{Message: "Hello " + in.Name}, nil
}
func main() {
lis, err := net.Listen("tcp", port)
if err != nil {
log.Fatalf("failed to listen: %v", err)
}
s := grpc.NewServer()
pb.RegisterGreeterServer(s, &server{})
// Register reflection service on gRPC server.
reflection.Register(s)
if err := s.Serve(lis); err != nil {
log.Fatalf("failed to serve: %v", err)
}
}
client:
package main
import (
"log"
"os"
"time"
"golang.org/x/net/context"
"google.golang.org/grpc"
pb "google.golang.org/grpc/examples/helloworld/helloworld"
)
const (
address = "localhost:50051"
defaultName = "world"
)
func main() {
// Set up a connection to the server.
conn, err := grpc.Dial(address, grpc.WithInsecure())
if err != nil {
log.Fatalf("did not connect: %v", err)
}
defer conn.Close()
c := pb.NewGreeterClient(conn)
// Contact the server and print out its response.
name := defaultName
if len(os.Args) > 1 {
name = os.Args[1]
}
ctx, cancel := context.WithTimeout(context.Background(), time.Second)
defer cancel()
r, err := c.SayHello(ctx, &pb.HelloRequest{Name: name})
if err != nil {
log.Fatalf("could not greet: %v", err)
}
log.Printf("Greeting: %s", r.Message)
}
6、QSF和GRPC结合的例子(后续将陆续更新)