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node-cronで、cron処理にパラメータを渡す

Last updated at Posted at 2014-12-06

cronJobを作成するときに持っている値を、cron処理で呼ばれるコールバック関数の中でも使いたい。
そんなときは、cronJobのコンストラクタで、contextパラメータを設定する。

hoge.coffee
cronJob = require('cron').CronJob

for idx in [0...5]
  cronjob = new cronJob(
    cronTime: "#{idx} * * * * *"
    start:    true
    context:  {num: idx}
    onTick:   ->
      console.log "cron No.#{this.num} : #{new Date}"
  )

実行結果

cron No.0 : Sat Dec 06 2014 23:59:00 GMT+0900 (JST)
cron No.1 : Sat Dec 06 2014 23:59:01 GMT+0900 (JST)
cron No.2 : Sat Dec 06 2014 23:59:02 GMT+0900 (JST)
cron No.3 : Sat Dec 06 2014 23:59:03 GMT+0900 (JST)
cron No.4 : Sat Dec 06 2014 23:59:04 GMT+0900 (JST)
cron No.0 : Sun Dec 07 2014 00:00:00 GMT+0900 (JST)
cron No.1 : Sun Dec 07 2014 00:00:01 GMT+0900 (JST)
cron No.2 : Sun Dec 07 2014 00:00:02 GMT+0900 (JST)
cron No.3 : Sun Dec 07 2014 00:00:03 GMT+0900 (JST)
cron No.4 : Sun Dec 07 2014 00:00:04 GMT+0900 (JST)
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