過去にChinachu向けのスクリプトを少し書いたが、この度ちょっと家を空けるため、それを見越して録画が動作していない場合に自動でシャットダウンする仕組みを作成した。導入方法などはまた今度。

過去のスクリプトに少し手を入れる格好。

#!/usr/bin/env python3

from urllib.request import urlopen
import json
import io
import time

class ChinachuStatus:
    def __init__(self, urlBase):
        self.urlBase = urlBase
    
    def getNextReserve(self):
        response = urlopen(self.urlBase + '/reserves.json')
        res = json.load(io.TextIOWrapper(response, response.getheader('content-type').split('charset=')[1]))
        
        now = time.time()
        for e in [ int(ent['start'] / 1000) for ent in res if ent['start'] / 1000 > now ]:
            return e
    
    def isChinachuBusy(self):
        response = urlopen(self.urlBase + '/recording.json')
        res = json.load(io.TextIOWrapper(response, response.getheader('content-type').split('charset=')[1]))
        if len(res) > 0:
            return True
        if self.getNextReserve() - 600 < time.time():
            return True
        return False

if __name__ == '__main__':
    url = 'http://watson.local:10772/api'
    print(ChinachuStatus(url).getNextReserve())
    print(ChinachuStatus(url).isChinachuBusy())

Code: ChinachuStatus.py

#!/usr/bin/env python3

from ChinachuStatus import ChinachuStatus

if __name__ == '__main__':
    url = 'http://localhost:10772/api'
    print(ChinachuStatus(url).getNextReserve() - 300)

Code: chinachuNext

#!/usr/bin/env python3

import sys
from ChinachuStatus import ChinachuStatus

if __name__ == '__main__':
    url = 'http://localhost:10772/api'
    res = ChinachuStatus(url).isChinachuBusy()
    if res:
        print("Chinachu is busy now.")
        sys.exit(1)
    print("Chinachu is free.")
    sys.exit(0)

Code: chinachuFree

*/5 * * * * /usr/local/bin/chinachuFree && /bin/date | /usr/bin/mail -s "chinachu is going to poweroff" haruo31 && /sbin/shutdown -h now

Code: ~# crontab -e