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callbackFuncSample.go
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callbackFuncSample.go
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/*************************************************************************
*
* Copyright 2018 Ideas2IT Technology Services Private Limited.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
***********************************************************************/
package main
import (
"fmt"
"time"
"io/ioutil"
gc "github.com/ideas2it/ideacrawler/goclient"
)
func main() {
z := gc.NewCrawlJob("127.0.0.1", "2345")
z.Callback = func(ph *gc.PageHTML, cj *gc.CrawlJob) {
fmt.Println(ph.Success, ph.Httpstatuscode, ph.Url, ph.MetaStr)
fmt.Println(string(ph.Content))
err := ioutil.WriteFile("/tmp/out.file", ph.Content, 0775)
if err != nil {
fmt.Println("Write failed:",err, "for url:", ph.Url)
}
}
z.SeedURL = "http://books.toscrape.com/catalogue/page-1.html"
// Follow SeedURL with given FollowUrlRegexp. Also we could define CallbackUrlRegexp.
z.Follow = true
z.FollowUrlRegexp = ".*books.*page-.*html"
z.CallbackUrlRegexp = ".*books.*catalogue.*index.*html"
// Remove fragment in crawled URL.
z.UnsafeNormalizeURL = false
z.Impolite = true
z.CancelOnDisconnect = true
// Time delay between each page crawling. Time delay will be randomly generated between MinDelay and MaxDelay(in Seconds).
z.MinDelay = 1
z.MaxDelay = 5
z.Start()
// z.AddPage("http://books.toscrape.com/")
for {
if z.IsAlive() {
time.Sleep(1*time.Second)
} else {
break
}
}
}