gagent/internal/client/client.go

package client

import (
	fmt "fmt"
	log "log"
	sync "sync"
	time "time"

	gs "git.dragonheim.net/dragonheim/gagent/internal/gstructs"

	zmq "github.com/pebbe/zmq4"
)

/*
 Client mode will send an agent file to a router for processing
 Clients do not process the agent files, only send them as
 requests to a router. If started without arguments, the client
 will contact the router and attempt to retrieve the results
 of it's most recent request.
*/
func Main(wg *sync.WaitGroup, config gs.GagentConfig, agent string) {
	defer wg.Done()
	log.Printf("[INFO] Starting client\n")

	for key := range config.Routers {
		// Generate connect string for this router.
		rport := config.ClientPort
		if config.Routers[key].ClientPort != 0 {
			rport = config.Routers[key].ClientPort
		}
		connectString := fmt.Sprintf("tcp://%s:%d", config.Routers[key].RouterAddr, rport)

		wg.Add(1)
		go sendAgent(wg, config.UUID, connectString, agent)
		time.Sleep(10 * time.Millisecond)
	}
}

func sendAgent(wg *sync.WaitGroup, uuid string, connectString string, agent string) {
	log.Printf("[DEBUG] Attempting to connect to %s\n", connectString)
	defer wg.Done()
	var mu sync.Mutex
	mu.Lock()

	sock, _ := zmq.NewSocket(zmq.REQ)
	defer sock.Close()

	sock.SetIdentity(uuid)
	sock.Connect(connectString)

	log.Printf("[DEBUG] Start sending agent...\n")
	sock.SendMessage(agent)
	log.Printf("[DEBUG] End sending agent...\n")
	mu.Unlock()
}