llmongodb/consumer.go

// consumer
package main

import (
	"fmt"
	//	"github.com/garyburd/redigo/redis"
	"log"
	"strconv"
	"strings"
	"time"
)

type consumed struct {
	user   string
	logins []string
}

func consumer(consume chan produced, remove chan consumed) {

	var conn = dbs.rdb.Get()
	defer conn.Close()

	for {

		prod := <-consume

		cons := consumed{
			user:   prod.user,
			logins: make([]string, 0),
		}

		start := time.Now()
		for i := range prod.logins {
			login := prod.logins[i]
			// se la riga di login e' vuota
			if login == "" {
				log.Println("Login empty: ", prod.user)
				cons.logins = append(cons.logins, login)
				//			retval, _ := conn.Do("lrem", user, "0", login)
				//			log.Println("LREM retval: ", user, login, retval)
				//			return
				continue
			}
			sval := strings.Split(login, ":")
			// se il formato della riga di login non e' corretto
			if sval[1] == "" {
				log.Println("Login format error: ", login, prod.user)
				cons.logins = append(cons.logins, login)
				//			retval, _ := conn.Do("lrem", user, "0", login)
				//			log.Println("LREM retval: ", user, login, retval)
				//			return
				continue
			}
			// se il timestamp della riga di login non e' corretto
			date, err := strconv.ParseInt(sval[1], 10, 64)
			if err != nil {
				log.Printf("Date Error: %+v - %s - %s\n", err, prod.user, login)
				cons.logins = append(cons.logins, login)
				//			retval, _ := conn.Do("lrem", user, "0", login)
				//			log.Println("LREM retval: ", user, login, retval)
				//			return
				continue
			}
			ml := MongoLogin{
				User:     prod.user,
				Protocol: sval[0],
				Ip:       sval[2],
				Date:     time.Unix(date, 0),
			}
			ind := Index{
				User: prod.user,
				Date: time.Unix(date, 0),
			}
			// inserisce il login su Mongodb
			count++
			_, err = dbs.ll.Upsert(ind, ml)
			if err != nil {
				log.Printf("Insert error: %+v\n", err)
				// se l'errore non e' "duplicate key error" salta al prossimo senza cancellare niente
				if !strings.Contains(err.Error(), "E11000") {
					errCount += 1
					//return
					continue
				}
			}
			if i < (len(prod.logins) - 1) {
				cons.logins = append(cons.logins, login)
				// cancella da Redis la riga di login inserita
				//			retval, _ := conn.Do("lrem", user, "0", login)
				//			if opts.Debug {
				//				log.Println("LREM retval: ", retval, user, login)
				//				fmt.Println("LREM retval: ", retval, user, login)
				//			}
			}
		}
		fmt.Printf("CONS: user=%s in %v - active=%d\n\r", prod.user, time.Since(start), dbs.rdb.ActiveCount())
		log.Printf("CONS: user=%s in %v - active=%d\n\r", prod.user, time.Since(start), dbs.rdb.ActiveCount())

		remove <- cons
	}
}