Created
May 26, 2015 18:26
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Simple web server for управления процессом
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| #!/usr/bin/env python2 | |
| import bottle | |
| import os | |
| import signal | |
| import subprocess | |
| import time | |
| process = None | |
| args = ['./start.sh'] | |
| def terminate_handler(signum, frame): | |
| do_stop() | |
| exit() | |
| #--------------------# | |
| def get_pid(): | |
| global process | |
| pid = -1 | |
| if process: | |
| pid = process.pid | |
| return pid | |
| def is_running(): | |
| pid = get_pid() | |
| try: | |
| os.killpg(pid, 0) | |
| return True | |
| except: | |
| pass | |
| return False | |
| #--------------------# | |
| @bottle.get('/') | |
| def index(): | |
| html = '''<!DOCTYPE html> | |
| <html> | |
| <head><title>{{ title }}</title>{{ !script }}</head> | |
| <body> | |
| {{ !content }} | |
| </body> | |
| </html> | |
| ''' | |
| script = '''<script> | |
| function post(location) { | |
| var xmlhttp = new XMLHttpRequest(); | |
| xmlhttp.onreadystatechange=function(){ | |
| if (xmlhttp.readyState==4 && xmlhttp.status==200) { | |
| console.log(xmlhttp.responseText); | |
| document.getElementById("result").innerHTML=xmlhttp.responseText; | |
| } | |
| } | |
| xmlhttp.open("POST", "/" + location, true); | |
| xmlhttp.send(); | |
| } | |
| </script>''' | |
| button = '''<p><button onclick="post('{0}')">{0}</button></p>''' | |
| res = '<hr/><p><div id="result"></div></p>' | |
| content = button.format('start') + button.format('stop') + button.format('restart') + res | |
| return bottle.template(html, title='process control', content=content, script=script) | |
| @bottle.get('/status') | |
| def get_status(): | |
| if is_running(): | |
| pid = get_pid() | |
| return '{0} IS RUNNING'.format(pid) | |
| return 'NOT RUNNING' | |
| @bottle.post('/start') | |
| def do_start(): | |
| global process | |
| global args | |
| if not process: | |
| print 'start...' | |
| process = subprocess.Popen(args, shell=True, preexec_fn=os.setsid) | |
| return get_status() | |
| @bottle.post('/restart') | |
| def do_restart(): | |
| do_stop() | |
| return do_start() | |
| @bottle.post('/stop') | |
| def do_stop(): | |
| global process | |
| if process: | |
| os.killpg(process.pid, signal.SIGTERM) | |
| while process.poll() is None: | |
| print '.', | |
| time.sleep(1) | |
| print 'stop.' | |
| process = None | |
| return get_status() | |
| if __name__ == '__main__': | |
| signal.signal(signal.SIGINT, terminate_handler) | |
| signal.signal(signal.SIGTERM, terminate_handler) | |
| bottle.run() |
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