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qpmd_client.go
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/
qpmd_client.go
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package quacktors
import (
"errors"
"fmt"
"github.com/Azer0s/qpmd"
"net"
"time"
)
func qpmdRegister(system *System, systemPort uint16) (net.Conn, error) {
logger.Debug("registering system to qpmd",
"system_name", system.name)
conn, err := net.Dial("tcp", fmt.Sprintf("localhost:%d", qpmdPort))
if err != nil {
return nil, err
}
err = sendRequest(conn, qpmd.Request{
RequestType: qpmd.REQUEST_REGISTER,
Data: map[string]interface{}{
qpmd.SYSTEM_NAME: system.name,
qpmd.PORT: systemPort,
qpmd.MACHINE_ID: machineId,
},
})
if err != nil {
return nil, err
}
res, err := readResponse(conn)
if err != nil {
return nil, err
}
if res.ResponseType == qpmd.RESPONSE_OK {
return conn, nil
}
return nil, errors.New("qpmd returned error on registration")
}
func qpmdHeartbeat(conn net.Conn, system *System) {
quit := func() {
logger.Error("qpmd heartbeat was quit unexpectedly serverside, is qpmd still running?")
system.quitChan <- true
system.closed = true
}
go func() {
for {
select {
case <-system.heartbeatQuitChan:
return
case <-time.After(25 * time.Second):
err := sendRequest(conn, qpmd.Request{
RequestType: qpmd.HEARTBEAT,
Data: make(map[string]interface{}),
})
if err != nil {
quit()
return
}
res, err := readResponse(conn)
if err != nil || res.ResponseType != qpmd.RESPONSE_OK {
quit()
return
}
}
}
}()
}
func qpmdLookup(system, remoteAddress string) (*RemoteSystem, error) {
logger.Debug("looking up remote system in qpmd",
"system_name", system,
"remote_address", remoteAddress)
conn, err := net.Dial("tcp", fmt.Sprintf("%s:%d", remoteAddress, qpmdPort))
if err != nil {
return &RemoteSystem{}, err
}
err = sendRequest(conn, qpmd.Request{
RequestType: qpmd.REQUEST_LOOKUP,
Data: map[string]interface{}{
"system": system,
},
})
if err != nil {
return &RemoteSystem{}, err
}
res, err := readResponse(conn)
if err != nil {
return &RemoteSystem{}, err
}
if res.ResponseType != qpmd.RESPONSE_OK {
logger.Warn("couldn't find remote system in qpmd",
"system_name", system,
"remote_address", remoteAddress)
return nil, errors.New("couldn't find remote system in qpmd")
}
machineData := res.Data[qpmd.MACHINE].(map[string]interface{})
m := &Machine{
Address: remoteAddress,
MachineId: machineData[qpmd.MACHINE_ID].(string),
MessageGatewayPort: machineData[qpmd.MESSAGE_GATEWAY_PORT].(uint16),
GeneralPurposePort: machineData[qpmd.GP_GATEWAY_PORT].(uint16),
}
return &RemoteSystem{
Address: remoteAddress,
Port: res.Data[qpmd.PORT].(uint16),
MachineId: m.MachineId,
Machine: m,
}, nil
}