def list_(args, config):
if args.name:
all_boxes = ops.ls()
if args.name not in all_boxes:
report.die("No such container: '%s'" % args.name)
boxes = {args.name: all_boxes[args.name]}
else:
boxes = ops.ls()
print report.format(dict(status="OK", action="list", data=boxes, message=format_list(boxes)))
def shutdown(args, config):
must_be_root()
names = ops.ls()
for name in names:
if ops.is_running(name):
try:
ops.stop(name)
try:
box_config = ops.get_box_config(name)
except Exception as e:
report.die("Cannot load '%s' config, is it broken? %s" % (name, e))
if os.path.exists(ops.get_box_home(name, "heaver_root_generated")):
imager = image.get_image_operator(config["image"])
if box_config["datamounts"]:
for mountpoint, source in box_config["datamounts"]:
imager.disassemble_instance(source)
imager.disassemble_instance(box_config["root"])
except ops.InvocationError as e:
report.die("LXC is broken, cannot stop container %s: %s" % (name, e))
except ops.ContainerNotFound as e:
# WTF? Should not happen (containers in ops.ls() already exists)
report.die("Container %s just disappeared, panic!" % name)
send_status_soft(args, config)
print report.format(dict(status="OK", action="shutdown", id=name,
message="Container %s stopped at shutdown" % name))
def must_get_names(args):
"Helper for retrieving container names"
if args.all:
try:
names = ops.ls().keys()
except ops.InvocationError as e:
report.die("LXC is broken: %s" % e)
else:
if not ops.exists(args.name):
report.die("No such container: %s" % args.name)
names = [args.name]
return names
def make_tarball(args, config):
must_be_root()
if not args.name:
report.die("No container chosen (tarball cannot be feed with --all)")
name = args.name
if name not in ops.ls():
report.die("No such container: '%s'" % name)
if ops.is_running(name):
report.die("Container '%s' must be stopped for tarballing" % name)
tar_path = args.tarball
if tar_path == "<generated>":
# make temporary path for tarball
import tempfile
try:
tar_fd, tar_path = tempfile.mkstemp(dir=HEAVER_TMPDIR, prefix="%s.tar." % name)
tar_file = os.fdopen(tar_fd, "w")
except Exception as e: # FIXME: proper exceptions?
report.die("Cannot create tarball of container '%s': '%s'" % (name, e))
else:
try:
tar_file = open(tar_path, "wb")
except Exception as e: # FIXME: proper exceptions?
# cannot open file - no directory or no write access
report.die("Cannot create tarball of container '%s': %s" % (name, e))
box_config = ops.get_box_config(name)
imager = image.get_image_operator(config["image"])
imager.assemble_instance(box_config["root"])
try:
ops.write_tarball(name, tar_file)
except Exception as e: # FIXME: proper exceptions?
tar_file.close()
os.unlink(tar_path)
report.die("Cannot create tarball of container '%s': %s" % (name, e))
tar_file.close()
print report.format(dict(status="OK", action="tarball", data=tar_path,
message="Tarball of container '%s' created at '%s'" % (name, tar_path)))
def get_status(config):
if "hostname" in config:
hostname = config["hostname"]
else:
import platform
hostname = platform.node()
status = dict(la=ops.get_la(), ram=ops.get_ram(), oom=ops.get_oom_stats(),
boxes=ops.ls(), hostname=hostname)
used_ranges = utils.sync_open(config["net"]["used_ranges_path"], "a+")
networks = must_load_net_config(config["net"]["networks"], used_ranges.read().strip().split())
used_ranges.close()
ips_free = 0
for net in networks.values():
ips_free += net["pool"].count_free_addresses()
status["ips_free"] = ips_free
imager = image.get_image_operator(config["image"])
status["fs"] = imager.get_free_space()
status["now"] = time.time()
return status
def startup(args, config):
must_be_root()
unset_cgroup_hierarchy()
names = ops.ls()
for name in names:
running_flag = ops.get_box_home(name, "heaver_box_running")
if os.path.exists(running_flag):
try:
try:
box_config = ops.get_box_config(name)
except Exception as e:
report.die("Cannot load '%s' config, is it broken? %s" % (name, e))
if os.path.exists(ops.get_box_home(name, "heaver_root_generated")):
imager = image.get_image_operator(config["image"])
imager.assemble_instance(box_config["root"])
if box_config["datamounts"]:
root = box_config["root"]
for mountpoint, source in box_config["datamounts"]:
imager.assemble_instance(source)
# since 'mountpoint' starts with / we need to remove it
mountpoint = mountpoint.lstrip("/")
mount_path = os.path.join(root, mountpoint)
if not os.path.exists(mount_path):
os.makedirs(mount_path)
ops.start(name)
except ops.InvocationError as e:
report.die("LXC is broken, cannot start container %s: %s" % (name, e))
except ops.ContainerNotFound as e:
# WTF? Should not happen (containers in ops.ls() already exists)
report.die("Container %s just disappeared, panic!" % name)
send_status_soft(args, config)
print report.format(dict(status="OK", action="startup", id=name,
message="Container %s started after boot" % name))