techrec/server/server.py
boyska c0de3679a4 FIX db session managing
It's not fully fixed yet, probably. This fixes the bug in generate()
that prevents filename to be added.
2014-04-14 22:38:06 +02:00

347 lines
11 KiB
Python

import os
import sys
from datetime import datetime
import logging
logger = logging.getLogger('server')
from functools import partial
from bottle import Bottle, request, static_file, redirect, abort, response
botlog = logging.getLogger('bottle')
botlog.setLevel(logging.INFO)
botlog.addHandler(logging.StreamHandler(sys.stdout))
import bottle
bottle._stderr = lambda x: botlog.info(x.strip())
del bottle
from techrec import Rec, RecDB
from processqueue import get_process_queue
from forge import create_mp3
from config_manager import get_config
def date_read(s):
return datetime.fromtimestamp(int(s))
def date_write(dt):
return dt.strftime('%s')
def rec_sanitize(rec):
d = rec.serialize()
d['starttime'] = date_write(d['starttime'])
d['endtime'] = date_write(d['endtime'])
return d
class DateApp(Bottle):
'''
This application will expose some date-related functions; it is intended to
be used when you need to know the server's time on the browser
'''
def __init__(self):
Bottle.__init__(self)
self.route('/help', callback=self.help)
self.route('/date', callback=self.date)
self.route('/custom', callback=self.custom)
def date(self):
n = datetime.now()
return {
'unix': n.strftime('%s'),
'isoformat': n.isoformat(),
'ctime': n.ctime()
}
def custom(self):
n = datetime.now()
if 'strftime' not in request.query:
abort(400, 'Need argument "strftime"')
response.content_type = 'text/plain'
return n.strftime(request.query['strftime'])
def help(self):
response.content_type = 'text/plain'
return \
'/date : get JSON dict containing multiple formats of now()\n' + \
'/custom?strftime=FORMAT : get now().strftime(FORMAT)'
class RecAPI(Bottle):
def __init__(self, app):
Bottle.__init__(self)
self._route()
self._app = app
self.db = RecDB(get_config()['DB_URI'])
def _route(self):
self.post('/create', callback=self.create)
self.post('/delete', callback=self.delete)
self.post('/update/<recid:int>', callback=self.update)
self.post('/generate', callback=self.generate)
self.get('/help', callback=self.help)
self.get('/', callback=self.help)
self.get('/get/search', callback=self.search)
self.get('/get/ongoing', callback=self.get_ongoing)
self.get('/jobs', callback=self.running_jobs)
self.get('/jobs/<job_id:int>', callback=self.check_job)
def create(self):
req = dict(request.POST.allitems())
ret = {}
logger.debug("Create request %s " % req)
now = datetime.now()
start = date_read(req['starttime']) if 'starttime' in req else now
name = req['name'] if 'name' in req else ""
end = date_read(req['endtime']) if 'endtime' in req else now
rec = Rec(name=name,
starttime=start,
endtime=end)
ret = self.db.add(rec)
return self.rec_msg("Nuova registrazione creata! (id:%d)" % ret.id,
rec=rec_sanitize(rec))
def delete(self):
req = dict(request.POST.allitems())
logging.info("Server: request delete %s " % (req))
if 'id' not in req:
return self.rec_err("No valid ID")
if self.db.delete(req["id"]):
return self.rec_msg("DELETE OK")
else:
return self.rec_err("DELETE error: %s" % (self.db.get_err()))
def update(self, recid):
req = dict(request.POST.allitems())
newrec = {}
now = datetime.now()
if 'starttime' not in req:
newrec['starttime'] = now
else:
newrec['starttime'] = date_read(req['starttime'])
if "endtime" not in req:
newrec['endtime'] = now
else:
newrec['endtime'] = date_read(req['endtime'])
if 'name' in req:
newrec["name"] = req["name"]
try:
logger.info("prima di update")
result_rec = self.db.update(recid, newrec)
logger.info("dopo update")
except Exception as exc:
return self.rec_err("Errore Aggiornamento", exception=exc)
return self.rec_msg("Aggiornamento completato!",
rec=rec_sanitize(result_rec))
def generate(self):
# prendiamo la rec in causa
recid = dict(request.POST.allitems())['id']
rec = self.db._search(_id=recid)[0]
if rec.filename is not None and os.path.exists(rec.filename):
return {'status': 'ready',
'message': 'The file has already been generated at %s' %
rec.filename,
'rec': rec
}
if get_config()['FORGE_MAX_DURATION'] > 0 and \
(rec.endtime - rec.starttime).total_seconds() > \
get_config()['FORGE_MAX_DURATION']:
response.status = 400
return {'status': 'error',
'message': 'The requested recording is too long' +
' (%d seconds)' %
(rec.endtime - rec.starttime).total_seconds()
}
rec.filename = get_config()['AUDIO_OUTPUT_FORMAT'] % {
'time': rec.starttime.strftime('%y%m%d_%H%M'),
'name': filter(lambda c: c.isalpha(), rec.name)
}
self.db.get_session(rec).commit()
job_id = self._app.pq.submit(
create_mp3,
start=rec.starttime,
end=rec.endtime,
outfile=os.path.join(get_config()['AUDIO_OUTPUT'], rec.filename))
logger.debug("SUBMITTED: %d" % job_id)
return self.rec_msg("Aggiornamento completato!",
job_id=job_id,
result='/output/' + rec.filename,
rec=rec_sanitize(rec))
def check_job(self, job_id):
try:
job = self._app.pq.check_job(job_id)
except ValueError:
abort(400, 'job_id not valid')
def ret(status):
return {'job_status': status, 'job_id': job_id}
if job is True:
return ret('DONE')
if job is False:
abort(404, 'No such job has ever been spawned')
else:
if job.ready():
try:
res = job.get()
return res
except Exception as exc:
r = ret('FAILED')
r['exception'] = str(exc)
import traceback
tb = traceback.format_exc()
logger.warning(tb)
if get_config()['DEBUG']:
r['exception'] = "%s: %s" % (str(exc), tb)
r['traceback'] = tb
return r
return ret('WIP')
def running_jobs(self):
res = {}
res['last_job_id'] = self._app.pq.last_job_id
res['running'] = self._app.pq.jobs.keys()
return res
def search(self, args=None):
req = dict()
req.update(request.GET.allitems())
logger.debug("Search request: %s" % (req))
values = self.db._search(**req)
from pprint import pprint
logger.debug("Returned Values %s" %
pprint([r.serialize() for r in values]))
ret = {}
for rec in values:
ret[rec.id] = rec_sanitize(rec)
logging.info("Return: %s" % ret)
return ret
def get_ongoing(self):
return {rec.id: rec_sanitize(rec)
for rec in self.db.get_ongoing()}
# @route('/help')
def help(self):
return "<h1>help</h1><hr/>\
<h2>/get, /get/, /get/<id> </h2>\
<h3>Get Info about rec identified by ID </h3>\
\
<h2>/search, /search/, /search/<key>/<value></h2>\
<h3>Search rec that match key/value (or get all)</h3>\
\
<h2>/delete/<id> </h2>\
<h3>Delete rec identified by ID </h3>\
<h2>/update </h2>\
<h3>Not implemented.</h3>"
# JSON UTILS
def rec_msg(self, msg, status=True, **kwargs):
d = {"message": msg, "status": status}
d.update(kwargs)
return d
def rec_err(self, msg, **kwargs):
return self.rec_msg(msg, status=False, **kwargs)
class RecServer:
def __init__(self):
self._app = Bottle()
self._app.pq = get_process_queue()
self._route()
self.db = RecDB(get_config()['DB_URI'])
def _route(self):
## Static part of the site
self._app.route('/output/<filepath:path>',
callback=lambda filepath:
static_file(filepath,
root=get_config()['AUDIO_OUTPUT'],
download=True))
self._app.route('/static/<filepath:path>',
callback=lambda filepath: static_file(filepath,
root='static/'))
self._app.route('/', callback=lambda: redirect('/new.html'))
self._app.route('/new.html',
callback=partial(static_file, 'new.html',
root='pages/'))
self._app.route('/old.html',
callback=partial(static_file, 'old.html',
root='pages/'))
class DebugAPI(Bottle):
'''
This application is useful for testing the webserver itself
'''
def __init__(self):
Bottle.__init__(self)
self.route('/sleep/:milliseconds', callback=self.sleep)
self.route('/cpusleep/:howmuch', callback=self.cpusleep)
self.route('/big/:exponent', callback=self.big)
def sleep(self, milliseconds):
import time
time.sleep(int(milliseconds)/1000.0)
return 'ok'
def cpusleep(self, howmuch):
out = ''
for i in xrange(int(howmuch) * (10**3)):
if i % 11234 == 0:
out += 'a'
return out
def big(self, exponent):
'''
returns a 2**n -1 string
'''
for i in xrange(int(exponent)):
yield str(i) * (2 ** i)
def help(self):
response.content_type = 'text/plain'
return '''
/sleep/<int:milliseconds> : sleep, than say "ok"
/cpusleep/<int:howmuch> : busysleep, than say "ok"
/big/<int:exponent> : returns a 2**n -1 byte content
'''
def main_cmd(*args):
"""meant to be called from argparse"""
c = RecServer()
c._app.mount('/date', DateApp())
c._app.mount('/api', RecAPI(c._app))
if get_config()['DEBUG']:
c._app.mount('/debug', DebugAPI())
c._app.run(server=get_config()['WSGI_SERVER'],
host=get_config()['HOST'],
port=get_config()['PORT'],
debug=get_config()['DEBUG'],
**get_config()['WSGI_SERVER_OPTIONS']
)
if __name__ == '__main__':
from cli import common_pre
common_pre()
logger.warn("Usage of server.py is deprecated; use cli.py")
main_cmd()
# vim: set ts=4 sw=4 et ai ft=python: