github.com/tickoalcantara12/micro/v3@v3.0.0-20221007104245-9d75b9bcbab9/service/client/grpc/pool_test.go (about)

     1  // Copyright 2020 Asim Aslam
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     https://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  //
    15  // Original source: github.com/micro/go-micro/v3/client/grpc/grpc_pool_test.go
    16  
    17  package grpc
    18  
    19  import (
    20  	"context"
    21  	"net"
    22  	"testing"
    23  	"time"
    24  
    25  	"google.golang.org/grpc"
    26  	pgrpc "google.golang.org/grpc"
    27  	pb "github.com/tickoalcantara12/micro/v3/service/client/grpc/proto"
    28  )
    29  
    30  func testPool(t *testing.T, size int, ttl time.Duration, idle int, ms int) {
    31  	// setup server
    32  	l, err := net.Listen("tcp", ":0")
    33  	if err != nil {
    34  		t.Fatalf("failed to listen: %v", err)
    35  	}
    36  	defer l.Close()
    37  
    38  	s := pgrpc.NewServer()
    39  	pb.RegisterGreeterServer(s, &greeterServer{})
    40  
    41  	go s.Serve(l)
    42  	defer s.Stop()
    43  
    44  	// zero pool
    45  	p := newPool(size, ttl, idle, ms)
    46  
    47  	for i := 0; i < 10; i++ {
    48  		// get a conn
    49  		cc, err := p.getConn(l.Addr().String(), grpc.WithInsecure())
    50  		if err != nil {
    51  			t.Fatal(err)
    52  		}
    53  
    54  		rsp := pb.HelloReply{}
    55  
    56  		err = cc.Invoke(context.TODO(), "/helloworld.Greeter/SayHello", &pb.HelloRequest{Name: "John"}, &rsp)
    57  		if err != nil {
    58  			t.Fatal(err)
    59  		}
    60  
    61  		if rsp.Message != "Hello John" {
    62  			t.Fatalf("Got unexpected response %v", rsp.Message)
    63  		}
    64  
    65  		// release the conn
    66  		p.release(l.Addr().String(), cc, nil)
    67  
    68  		p.Lock()
    69  		if i := p.conns[l.Addr().String()].count; i > size {
    70  			p.Unlock()
    71  			t.Fatalf("pool size %d is greater than expected %d", i, size)
    72  		}
    73  		p.Unlock()
    74  	}
    75  }
    76  
    77  func TestGRPCPool(t *testing.T) {
    78  	testPool(t, 0, time.Minute, 10, 2)
    79  	testPool(t, 2, time.Minute, 10, 1)
    80  }