def get_images():
response.content_type = 'application/json'
if self.con is None:
return json.dumps(None)
imgs = get_json('/images/json', local_socket='/var/run/docker.sock')
r = [lower_dict(d) for d in imgs]
return json.dumps(r)
def load_containers(self):
if not self.con:
return
try:
conts = get_json('/containers/json', local_socket='/var/run/docker.sock')
except request_errors, exp:
self.connect()
return
def load_images(self):
if not self.con:
return
try:
self.images = get_json('/images/json', local_socket='/var/run/docker.sock')
except request_errors, exp:
self.connect()
return
def get_images(_id):
response.content_type = 'application/json'
if self.con is None:
return json.dumps(None)
imgs = get_json('/images/json', local_socket='/var/run/docker.sock')
for d in imgs:
if d['Id'] == _id:
return json.dumps(lower_dict(d))
return json.dumps(None)
def connect(self):
if not self.con:
try:
self.con = get_json('/version', local_socket='/var/run/docker.sock')
except request_errors, exp: # cannot connect
self.con = None
logger.debug('Cannot connect to docker')
return
# Version return something like this:
#{
# "ApiVersion":"1.12",
# "Version":"0.2.2",
# "GitCommit":"5a2a5cc+CHANGES",
# "GoVersion":"go1.0.3"
# }
if self.con == '':
self.con = None
logger.debug('Cannot connect to docker')
def do_loop(self):
self.connect()
self.load_containers()
self.load_images()
while True:
self.connect()
if not self.con:
time.sleep(1) # do not hammer the connexion
continue
now = int(time.time())
try:
evts = get_json("/events", local_socket='/var/run/docker.sock', params={'until':now, 'since':now - 1}, multi=True)
except Exception, exp:
logger.debug('cannot get docker events: %s' % exp)
time.sleep(1)
continue
logger.debug("GET docker events %s" % evts)
# docker an return one or more dict
if isinstance(evts, dict):
evts = [evts]
# now manage events and lock on it
#evts = self.con.events() # can lock here
for ev in evts:
evdata = ev
_id = evdata["id"]
status = evdata["status"]
if status in ("die", "stop"):
if _id in self.containers:
logger.debug('removing a container %s' % _id)
del self.containers[_id]
# stats will be cleaned on the next computation
else:
logger.debug('Asking to remove an unknow container? %s' % _id)
elif status == 'start':
self.load_container(_id)
else:
logger.debug('UNKNOWN EVENT IN DOCKER %s' % status)
time.sleep(1)
def load_container(self, _id):
try:
inspect = get_json('/containers/%s/json' % _id, local_socket='/var/run/docker.sock')
except request_errors, exp:
self.connect()
return
def get_kunai_json(uri):
local_socket = get_local_socket()
return get_json(uri, local_socket)
