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main.go
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main.go
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package main
import (
"log"
"math/rand"
"os"
"regexp"
"time"
"github.com/gocolly/colly"
"github.com/gocolly/colly/debug"
"github.com/gocolly/colly/queue"
"github.com/loggerhead/doger/api"
"github.com/loggerhead/doger/crawler"
"github.com/zolamk/colly-mongo-storage/colly/mongo"
)
func main() {
if err := initAll(); err != nil {
panic(err)
}
}
func initAll() (err error) {
rand.Seed(time.Now().UTC().UnixNano())
initLogger()
c := colly.NewCollector(
colly.Async(true),
colly.Debugger(&debug.LogDebugger{}),
colly.URLFilters(
regexp.MustCompile(api.GenURL("/user")+"/.*"),
regexp.MustCompile(api.GenURL("/dynamic")+"/.*"),
),
)
err = c.Limit(&colly.LimitRule{
DomainGlob: "*",
Delay: 1000 * time.Millisecond,
RandomDelay: 500 * time.Millisecond,
Parallelism: 1,
})
if err != nil {
return
}
storage := &mongo.Storage{
Database: "doger",
URI: "mongodb://127.0.0.1:27017",
}
if err = crawler.InitDB("users", storage.URI); err != nil {
return
}
if err = c.SetStorage(storage); err != nil {
return
}
if err = crawler.Init(c); err != nil {
return
}
if err = initAndRunQueue(c); err != nil {
return
}
log.Printf("finished Queue\n")
c.Wait()
log.Printf("finished all\n")
return
}
func initLogger() {
logFile, err := os.OpenFile("doger.log", os.O_CREATE|os.O_APPEND|os.O_RDWR, 0666)
if err != nil {
panic(err)
}
log.SetFlags(log.Ldate | log.Lmicroseconds | log.Lshortfile)
log.SetOutput(logFile)
}
func initAndRunQueue(c *colly.Collector) error {
maxDID := <-crawler.GetMaxDID()
log.Printf("begin initAndRunQueue: %v\n", maxDID)
q, _ := queue.New(10, &queue.InMemoryQueueStorage{MaxSize: maxDID})
go func() {
for i := maxDID - 1; i > 0; i-- {
if err := q.AddURL(api.ReqUtil.GenURLDynamicDetail(i)); err != nil {
log.Printf("ERROR q.AddURL failed: %v %v\n", i, err)
}
if i%100000 == 0 {
log.Printf("q.AddURL succ: %v\n", i)
}
}
}()
log.Printf("q.run: %v\n", maxDID)
return q.Run(c)
}