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import shutil
import urllib
import os
from fabric.api import env, run, put, cd, get, local
from cloudinitd.statics import *
def _iftar(filename):
"""Return base filename if filename ends with .tar.gz (and does not simply equal that suffix)
Otherwise return None
"""
if not filename:
return None
idx = filename.rfind('.tar.gz')
if idx > 0:
return filename[:idx]
else:
return None
def _tartask(directory, basename, tarball, run_pgm=run):
"""Expand the tarball, ensure it contains a directory with the basename.
Ensure run.sh exists inside.
Return path to the run.sh file.
"""
with cd(directory):
run_pgm("tar -xvzf %s" % tarball)
tardir = os.path.join(directory, basename)
try:
run_pgm("test -d %s" % tardir)
except:
raise Exception("The tarball does not expand to a directory of the same name: %s" % tardir)
destpgm = os.path.join(tardir, "run.sh")
try:
run_pgm("test -f %s" % destpgm)
except:
raise Exception("The tarball does contain a 'run.sh' file: %s" % tarball)
# In case they forgot:
run_pgm("chmod +x %s" % destpgm)
return destpgm
def _make_ssh(pgm, args="", local_exe=None):
if local_exe:
cmd = "%s %s" % (pgm, args)
return cmd
ssh_opts = "-A -n -T -o BatchMode=yes -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -o PasswordAuthentication=no"
try:
if 'CLOUDINITD_SSH_OPTS' in os.environ:
ssh_opts = os.environ['CLOUDINITD_SSH_OPTS']
except:
pass
sshexec = "ssh"
try:
if os.environ['CLOUDINITD_SSH']:
sshexec = os.environ['CLOUDINITD_SSH']
except:
pass
args = urllib.unquote(args)
user = ""
if env.user:
user = env.user + '@'
port = ""
if env.port:
port = "-p " + env.port
key = ""
if env.key_filename and env.key_filename[0]:
key = "-i " + env.key_filename[0]
cmd = "%s %s %s %s %s%s '%s %s'" % (sshexec, port, ssh_opts, key, user, env.host, pgm, args)
return cmd
def readypgm(pgm=None, args=None, stagedir=None, local_exe=None):
local_exe = str(local_exe).lower() == 'true'
pgm_to_use = run
put_pgm = put
if local_exe:
pgm_to_use = local
put_pgm = shutil.copy
args = urllib.unquote(args)
env.warn_only = True
pgm_to_use('mkdir -p %s' % stagedir)
relpgm = os.path.basename(pgm)
destpgm = "%s/%s" % (stagedir, relpgm)
if local_exe:
os.chdir(stagedir)
put_pgm(pgm, destpgm)
os.chmod(destpgm, 0755)
else:
put_pgm(pgm, destpgm, mode=0755)
tarname = _iftar(relpgm)
if tarname:
destpgm = _tartask(stagedir, tarname, destpgm)
env.warn_only = False
destpgm = destpgm + " " + args
with cd(stagedir):
pgm_to_use(destpgm)
def cleanup_dirs(stagedir=None, local_exe=None):
cmd = _make_ssh("rm -rf %s" %(stagedir), local_exe=local_exe)
local(cmd)
def bootpgm(pgm=None, args=None, conf=None, env_conf=None, output=None, stagedir=None, remotedir=None, local_exe=None):
local_exe = str(local_exe).lower() == 'true'
pgm_to_use = run
put_pgm = put
if local_exe:
pgm_to_use = local
put_pgm = shutil.copy
args = urllib.unquote(args)
pgm_to_use('mkdir %s;chmod 777 %s' % (remotedir, remotedir))
pgm_to_use('mkdir -p %s' % stagedir)
relpgm = os.path.basename(pgm)
destpgm = "%s/%s" % (stagedir, relpgm)
if local_exe:
os.chdir(stagedir)
put_pgm(pgm, destpgm)
os.chmod(destpgm, 0755)
else:
put_pgm(pgm, destpgm, mode=0755)
tarname = _iftar(relpgm)
if tarname:
destpgm = _tartask(stagedir, tarname, destpgm, run_pgm=pgm_to_use)
if conf and conf != "None":
destconf = "%s/bootconf.json" % stagedir
put_pgm(conf, destconf)
os.remove(conf)
if env_conf and env_conf != "None":
destenv = "%s/bootenv.sh" % stagedir
put_pgm(env_conf, destenv)
os.remove(env_conf)
destpgm = destpgm + " " + args
local_cmd = _make_ssh("cd %s;%s" %(stagedir, destpgm), local_exe=local_exe)
if local_cmd:
local(local_cmd)
with cd(stagedir):
#run(destpgm)
try:
fetch_conf(output=output, stagedir=stagedir, local_exe=local_exe)
except:
pass
def fetch_conf(output=None, stagedir=None, local_exe=None):
remote_output = "%s/bootout.json" % (stagedir)
if local_exe:
shutil.copy(remote_output, output)
else:
get(remote_output, output)