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Copy pathchannel_rpc_test.go
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283 lines (237 loc) 路 4.97 KB
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package pool
import (
"math/rand"
"net"
"net/http"
"net/rpc"
"sync"
"testing"
"time"
)
var (
InitialCap = 5
MaxIdleCap = 10
MaximumCap = 100
network = "tcp"
address = "127.0.0.1:7777"
//factory = func() (interface{}, error) { return net.Dial(network, address) }
factory = func() (interface{}, error) {
return rpc.DialHTTP("tcp", address)
}
closeFac = func(v interface{}) error {
nc := v.(*rpc.Client)
return nc.Close()
}
)
func init() {
// used for factory function
go rpcServer()
time.Sleep(time.Millisecond * 300) // wait until tcp server has been settled
rand.Seed(time.Now().UTC().UnixNano())
}
func TestNew(t *testing.T) {
p, err := newChannelPool()
defer p.Release()
if err != nil {
t.Errorf("New error: %s", err)
}
}
func TestPool_Get_Impl(t *testing.T) {
p, _ := newChannelPool()
defer p.Release()
conn, err := p.Get()
if err != nil {
t.Errorf("Get error: %s", err)
}
_, ok := conn.(*rpc.Client)
if !ok {
t.Errorf("Conn is not of type poolConn")
}
p.Put(conn)
}
func TestPool_Get(t *testing.T) {
p, _ := newChannelPool()
defer p.Release()
_, err := p.Get()
if err != nil {
t.Errorf("Get error: %s", err)
}
// after one get, current capacity should be lowered by one.
if p.Len() != (InitialCap - 1) {
t.Errorf("Get error. Expecting %d, got %d",
(InitialCap - 1), p.Len())
}
// get them all
var wg sync.WaitGroup
for i := 0; i < (MaximumCap - 1); i++ {
wg.Add(1)
go func() {
defer wg.Done()
_, err := p.Get()
if err != nil {
t.Errorf("Get error: %s", err)
}
}()
}
wg.Wait()
if p.Len() != 0 {
t.Errorf("Get error. Expecting %d, got %d",
(InitialCap - 1), p.Len())
}
_, err = p.Get()
if err != ErrMaxActiveConnReached {
t.Errorf("Get error: %s", err)
}
}
func TestPool_Put(t *testing.T) {
pconf := Config{InitialCap: InitialCap, MaxCap: MaximumCap, Factory: factory, Close: closeFac, IdleTimeout: time.Second * 20,
MaxIdle:MaxIdleCap}
p, err := NewChannelPool(&pconf)
if err != nil {
t.Fatal(err)
}
defer p.Release()
// get/create from the pool
conns := make([]interface{}, MaximumCap)
for i := 0; i < MaximumCap; i++ {
conn, _ := p.Get()
conns[i] = conn
}
// now put them all back
for _, conn := range conns {
p.Put(conn)
}
if p.Len() != MaxIdleCap {
t.Errorf("Put error len. Expecting %d, got %d",
1, p.Len())
}
p.Release() // close pool
}
func TestPool_UsedCapacity(t *testing.T) {
p, _ := newChannelPool()
defer p.Release()
if p.Len() != InitialCap {
t.Errorf("InitialCap error. Expecting %d, got %d",
InitialCap, p.Len())
}
}
func TestPool_Close(t *testing.T) {
p, _ := newChannelPool()
// now close it and test all cases we are expecting.
p.Release()
c := p.(*channelPool)
if c.conns != nil {
t.Errorf("Close error, conns channel should be nil")
}
if c.factory != nil {
t.Errorf("Close error, factory should be nil")
}
_, err := p.Get()
if err == nil {
t.Errorf("Close error, get conn should return an error")
}
if p.Len() != 0 {
t.Errorf("Close error used capacity. Expecting 0, got %d", p.Len())
}
}
func TestPoolConcurrent(t *testing.T) {
p, _ := newChannelPool()
pipe := make(chan interface{}, 0)
go func() {
p.Release()
}()
for i := 0; i < MaximumCap; i++ {
go func() {
conn, _ := p.Get()
pipe <- conn
}()
go func() {
conn := <-pipe
if conn == nil {
return
}
p.Put(conn)
}()
}
}
func TestPoolWriteRead(t *testing.T) {
//p, _ := NewChannelPool(0, 30, factory)
p, _ := newChannelPool()
conn, _ := p.Get()
cli := conn.(*rpc.Client)
var resp int
err := cli.Call("Arith.Multiply", Args{1, 2}, &resp)
if err != nil {
t.Error(err)
}
if resp != 2 {
t.Error("rpc.err")
}
}
func TestPoolConcurrent2(t *testing.T) {
//p, _ := NewChannelPool(0, 30, factory)
p, _ := newChannelPool()
var wg sync.WaitGroup
go func() {
for i := 0; i < 10; i++ {
wg.Add(1)
go func(i int) {
conn, _ := p.Get()
time.Sleep(time.Millisecond * time.Duration(rand.Intn(100)))
p.Close(conn)
wg.Done()
}(i)
}
}()
for i := 0; i < 10; i++ {
wg.Add(1)
go func(i int) {
conn, _ := p.Get()
time.Sleep(time.Millisecond * time.Duration(rand.Intn(100)))
p.Close(conn)
wg.Done()
}(i)
}
wg.Wait()
}
//
//func TestPoolConcurrent3(t *testing.T) {
// p, _ := NewChannelPool(0, 1, factory)
//
// var wg sync.WaitGroup
//
// wg.Add(1)
// go func() {
// p.Close()
// wg.Done()
// }()
//
// if conn, err := p.Get(); err == nil {
// conn.Close()
// }
//
// wg.Wait()
//}
func newChannelPool() (Pool, error) {
pconf := Config{InitialCap: InitialCap, MaxCap: MaximumCap, Factory: factory, Close: closeFac, IdleTimeout: time.Second * 20,
MaxIdle:MaxIdleCap}
return NewChannelPool(&pconf)
}
func rpcServer() {
arith := new(Arith)
rpc.Register(arith)
rpc.HandleHTTP()
l, e := net.Listen("tcp", address)
if e != nil {
panic(e)
}
go http.Serve(l, nil)
}
type Args struct {
A, B int
}
type Arith int
func (t *Arith) Multiply(args *Args, reply *int) error {
*reply = args.A * args.B
return nil
}