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import logging
_log = logging.getLogger(__name__)
import sys, os, errno
import subprocess as SP
from .conf import getconf, getrundir, getgendir
try:
import shlex
except ImportError:
from . import shlex
_levels = [
logging.WARN,
logging.INFO,
logging.DEBUG,
]
systemctl = '/bin/systemctl'
def status(conf, args, fp=None):
rundir=getrundir(user=args.user)
fp = fp or sys.stdout
for name in conf.sections():
if not conf.getboolean(name, 'instance'):
continue
fp.write('%s '%name)
pid = None
ports = []
infoname = os.path.join(rundir, 'procserv-%s'%name, 'info')
try:
with open(infoname) as F:
_log.debug('Read %s', F.name)
for line in map(str.strip, F):
if line.startswith('pid:'):
pid = int(line[4:])
elif line.startswith('tcp:'):
ports.append(line[4:])
elif line.startswith('unix:'):
ports.append(line[5:])
except Exception as e:
_log.debug('No info file %s', infoname)
if getattr(e, 'errno',0)!=errno.ENOENT:
_log.exception('oops')
if pid is not None:
_log.debug('Test PID %s', pid)
# Can we say if the process is actually running?
running = True
try:
os.kill(pid, 0)
_log.debug('PID exists')
except OSError as e:
if e.errno==errno.ESRCH:
running = False
_log.debug('PID does not exist')
elif e.errno==errno.EPERM:
_log.debug("Can't say if PID exists or not")
else:
_log.exception("Testing PID %s", pid)
fp.write('Running' if running else 'Dead')
if running:
fp.write('\t'+' '.join(ports))
else:
fp.write('Stopped')
fp.write('\n')
def syslist(conf, args):
SP.check_call([systemctl,
'--user' if args.user else '--system',
'list-units',
'--all' if args.all else '',
'procserv-*'])
def startproc(conf, args):
_log.info("Starting service procserv-%s.service", args.name)
SP.call([systemctl,
'--user' if args.user else '--system',
'start', 'procserv-%s.service'%args.name])
def stopproc(conf, args):
_log.info("Stopping service procserv-%s.service", args.name)
SP.call([systemctl,
'--user' if args.user else '--system',
'stop', 'procserv-%s.service'%args.name])
def attachproc(conf, args):
from .attach import attach
attach(args)
def addproc(conf, args):
from .generator import run, write_service
outdir = getgendir(user=args.user)
cfile = os.path.join(outdir, '%s.conf'%args.name)
argusersys = '--user' if args.user else '--system'
if os.path.exists(cfile) and not args.force:
_log.error("Instance already exists @ %s", cfile)
sys.exit(1)
#if conf.has_section(args.name):
# _log.error("Instance already exists")
# sys.exit(1)
try:
os.makedirs(outdir)
except OSError as e:
if e.errno!=errno.EEXIST:
_log.exception('Creating directory "%s"', outdir)
raise
_log.info("Writing: %s", cfile)
# ensure chdir is an absolute path
args.chdir = os.path.abspath(os.path.join(os.getcwd(), args.chdir))
args.command = os.path.abspath(os.path.join(args.chdir, args.command))
opts = {
'name':args.name,
'command':args.command + ' ' + ' '.join(map(shlex.quote, args.args)),
'chdir':args.chdir,
}
with open(cfile+'.tmp', 'w') as F:
F.write("""
[%(name)s]
command = %(command)s
chdir = %(chdir)s
"""%opts)
if args.username: F.write("user = %s\n"%args.username)
if args.group: F.write("group = %s\n"%args.group)
if args.port: F.write("port = %s\n"%args.port)
os.rename(cfile+'.tmp', cfile)
run(outdir, user=args.user)
SP.check_call([systemctl,
argusersys,
'enable',
"%s/procserv-%s.service"%(outdir, args.name)])
_log.info('Trigger systemd reload')
SP.check_call([systemctl,
argusersys,
'daemon-reload'], shell=False)
if args.autostart:
startproc(conf, args)
else:
sys.stdout.write("# manage-procs %s start %s\n"%(argusersys,args.name))
def delproc(conf, args):
from .conf import getconffiles, ConfigParser
for cfile in getconffiles(user=args.user):
_log.debug('delproc processing %s', cfile)
with open(cfile) as F:
C = ConfigParser({'instance':'1'})
C.readfp(F)
if not C.has_section(args.name):
continue
if not C.getboolean(args.name, 'instance'):
continue
if not args.force and sys.stdin.isatty():
while True:
sys.stdout.write("Remove section '%s' from %s ? [yN]"%(args.name, cfile))
sys.stdout.flush()
L = sys.stdin.readline().strip().upper()
if L=='Y':
break
elif L in ('N',''):
sys.exit(1)
else:
sys.stdout.write('\n')
if len(C.defaults())==1 and len(C.sections())==1:
_log.info('Emptying and removing file %s', cfile)
os.remove(cfile)
else:
C.remove_section(args.name)
C.remove_option('DEFAULT', 'instance')
_log.info("Removing section '%s' from file %s", args.name, cfile)
with open(cfile+'.tmp', 'w') as F:
C.write(F)
os.rename(cfile+'.tmp', cfile)
stopproc(conf, args)
_log.info("Disabling service procserv-%s.service", args.name)
SP.check_call([systemctl,
'--user' if args.user else '--system',
'disable',
"procserv-%s.service"%args.name])
_log.info('Triggering systemd reload')
SP.check_call([systemctl,
'--user' if args.user else '--system',
'daemon-reload'], shell=False)
outdir = getgendir(user=args.user)
_log.info('Removing service file %s/procserv-%s.service', outdir, args.name)
try:
os.remove("%s/procserv-%s.service"%(outdir,args.name))
except OSError:
pass
#sys.stdout.write("# systemctl stop procserv-%s.service\n"%args.name)
def writeprocs(conf, args):
argusersys = '--user' if args.user else '--system'
opts = {
'rundir':getrundir(user=args.user),
}
_log.debug('Writing %s', args.out)
with open(args.out+'.tmp', 'w') as F:
for name in conf.sections():
opts['name'] = name
F.write("""
console %(name)s {
master localhost;
type uds;
uds %(rundir)s/procserv-%(name)s/control;
}
"""%opts)
os.rename(args.out+'.tmp', args.out)
if args.reload:
_log.debug('Reloading conserver-server')
SP.check_call([systemctl,
argusersys,
'reload', 'conserver-server.service'], shell=False)
else:
sys.stdout.write('# systemctl %s reload conserver-server.service\n'%argusersys)
def getargs(args=None):
from argparse import ArgumentParser, REMAINDER
P = ArgumentParser()
P.add_argument('--user', action='store_true', default=os.geteuid()!=0,
help='Consider user config')
P.add_argument('--system', dest='user', action='store_false',
help='Consider system config')
P.add_argument('-v','--verbose', action='count', default=0)
SP = P.add_subparsers()
S = SP.add_parser('status', help='Report state of procServ instances')
S.set_defaults(func=status)
S = SP.add_parser('list', help='List procServ instances')
S.add_argument('--all', action='store_true', default=False)
S.set_defaults(func=syslist)
S = SP.add_parser('add', help='Create a new procServ instance')
S.add_argument('-C','--chdir', default=os.getcwd(), help='Run directory for instance')
S.add_argument('-P','--port', help='telnet port')
S.add_argument('-U','--user', dest='username')
S.add_argument('-G','--group')
S.add_argument('-f','--force', action='store_true', default=False)
S.add_argument('-A','--autostart',action='store_true', default=False,
help='Automatically start after adding')
S.add_argument('name', help='Instance name')
S.add_argument('command', help='Command')
S.add_argument('args', nargs=REMAINDER)
S.set_defaults(func=addproc)
S = SP.add_parser('remove', help='Remove a procServ instance')
S.add_argument('-f','--force', action='store_true', default=False)
S.add_argument('name', help='Instance name')
S.set_defaults(func=delproc)
S = SP.add_parser('write-procs-cf', help='Write conserver config')
S.add_argument('-f','--out',default='/etc/conserver/procs.cf')
S.add_argument('-R','--reload', action='store_true', default=False)
S.set_defaults(func=writeprocs)
S = SP.add_parser('start', help='Start a procServ instance')
S.add_argument('name', help='Instance name')
S.set_defaults(func=startproc)
S = SP.add_parser('stop', help='Stop a procServ instance')
S.add_argument('name', help='Instance name')
S.set_defaults(func=stopproc)
S = SP.add_parser('attach', help='Attach to a procServ instance')
S.add_argument("name", help='Instance name')
S.add_argument('extra', nargs=REMAINDER, help='extra args for telnet')
S.set_defaults(func=attachproc)
A = P.parse_args(args=args)
if not hasattr(A, 'func'):
P.print_help()
sys.exit(1)
return A
def main(args, test=False):
lvl = _levels[max(0, min(args.verbose, len(_levels)-1))]
if not test:
logging.basicConfig(level=lvl)
conf = getconf(user=args.user)
args.func(conf, args)
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