/
dail_rpc.go
89 lines (82 loc) · 1.9 KB
/
dail_rpc.go
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package util
import (
"fmt"
"net"
"net/rpc"
"syscall"
)
func DialServer(network, addr string) *rpc.Client {
var err error
rpcClient, err := rpc.Dial(network, addr)
if err != nil {
err1 := err.(*net.OpError)
if err1.Err != syscall.ENOENT && err1.Err != syscall.ECONNREFUSED {
fmt.Printf("Dial(%v) failed: %v\n", addr, err1)
}
return nil
}
return rpcClient
}
// debug
var RPCCallNs int64 = 0
func RPCPoolCall(pool *ResourcePool, name string, args interface{}, reply interface{}) bool {
// now := time.Now()
// defer func() {
// atomic.AddInt64(&RPCCallNs, time.Since(now).Nanoseconds())
// }()
c := pool.Get().(*rpc.Client)
if c != nil {
ok := RPCCall(c, name, args, reply)
if ok {
pool.Put(c)
} else {
pool.Clean(c)
}
return ok
}
return false
}
func RPCPoolArrayCall(pa *ResourcePoolsArray, i int, name string, args interface{}, reply interface{}) bool {
// now := time.Now()
// defer func() {
// atomic.AddInt64(&RPCCallNs, time.Since(now).Nanoseconds())
// }()
c := pa.Get(i).(*rpc.Client)
if c != nil {
ok := RPCCall(c, name, args, reply)
if ok {
pa.Put(i, c)
} else {
pa.Clean(i, c)
}
return ok
}
return false
}
// RPCCall is the RPC utility for reusing. Note that if successfully, the channel won't
// be closed.
func RPCCall(c *rpc.Client, name string, args interface{}, reply interface{}) bool {
// now := time.Now()
// defer func() {
// atomic.AddInt64(&RPCCallNs, time.Since(now).Nanoseconds())
// }()
err := c.Call(name, args, reply)
if err == nil {
return true
}
c.Close()
fmt.Println(err)
return false
}
// Call is the one-time RPC communication utility. No matter successfully or
// not, the channel will be closed.
func Call(network, srv, name string, args interface{}, reply interface{}) bool {
if c := DialServer(network, srv); c != nil {
ok := RPCCall(c, name, args, reply)
if ok {
c.Close()
}
return ok
}
return false
}