/
proxy.go
61 lines (52 loc) · 1.44 KB
/
proxy.go
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package concord
import (
"git.apache.org/thrift.git/lib/go/thrift"
bolt "github.com/concord/concord-go/thrift"
"log"
"net"
"strconv"
)
// proxy represents client to Concord proxy.
type proxy struct {
*bolt.BoltProxyServiceClient
}
// newProxy inits and connects to new proxy.
func newProxy(hostport string, md *Metadata) (*proxy, error) {
socket, err := thrift.NewTSocket(hostport)
if err != nil {
log.Println("[ERROR] Failed to create proxy socket:", err)
return nil, err
}
transport := thrift.NewTFramedTransport(socket)
protocol := thrift.NewTBinaryProtocolFactoryDefault()
client := bolt.NewBoltProxyServiceClientFactory(transport, protocol)
pr := &proxy{client}
err = transport.Open()
if err != nil {
log.Println("[ERROR] failed to open transport")
return nil, err
}
if err := pr.register(hostport, md); err != nil {
log.Println("[ERROR] wrong hostport", err)
return nil, err
}
return pr, nil
}
// register registers proxy instance with the scheduler, update endpoint info.
func (p *proxy) register(hostport string, metadata *Metadata) error {
host, port, err := net.SplitHostPort(hostport)
if err != nil {
return err
}
md := metadata.toBoltMetadata()
endpoint := bolt.NewEndpoint()
endpoint.Ip = host
portI, err := strconv.Atoi(port)
if err != nil {
log.Println("[ERROR] wrong port for proxy:", err)
return err
}
endpoint.Port = int32(portI)
md.ProxyEndpoint = endpoint
return p.RegisterWithScheduler(md)
}