def findConnectionLessContainers(self, containers):
""" Determines which containers no longer have any valid connections to the
outside world.
"""
# Build the set of active connections from all the running proxy processes.
connections = self.proxy.get_connections()
# Build the set of container-local ports used.
ports = set([])
for connection in connections:
laddr = connection.laddr
raddr = connection.raddr
if not laddr or not raddr:
continue
laddress = laddr[0]
raddress = raddr[0]
lport = laddr[1]
rport = raddr[1]
if laddress == '127.0.0.1' and raddress == '127.0.0.1':
ports.add(rport)
# For each draining container, if the port set contains one of the known mappings, then
# the container is still being used.
connectionless = list(containers)
for container in containers:
if getContainerStatus(container) == 'draining':
container_local_ports = containerutil.getLocalPorts(container)
if ports.intersection(container_local_ports):
connectionless.remove(container)
return connectionless
def updateProxy(self):
""" Updates the proxy used for port mapping to conform to the current running container
list.
"""
client = getDockerClient()
# Clear all routes in the proxy.
# TODO: When this is in daemon mode, don't need do this. We could selectively
# edit it instead.
self.proxy.clear_routes()
# Add routes for the non-draining containers and collect the draining containers to
# watch.
report('Finding running containers...', level = ReportLevels.EXTRA)
draining_containers = []
starting_containers = []
for component in self.components.values():
for container in component.getAllContainers(client):
if getContainerStatus(container) != 'draining':
starting_containers.append(container)
for mapping in component.config.ports:
local_port = containerutil.getLocalPort(client, container, mapping.container)
route = Route(mapping.kind == 'http', mapping.external, 'localhost', local_port)
self.proxy.add_route(route)
else:
draining_containers.append(container)
# Commit the changes to the proxy.
if draining_containers or starting_containers:
report('Updating proxy...', level = ReportLevels.EXTRA)
self.proxy.commit()
else:
report('Shutting down proxy...', level = ReportLevels.EXTRA)
self.proxy.shutdown()
# Mark the starting containers as running.
for container in starting_containers:
setContainerStatus(container, 'running')
if draining_containers:
report('Starting monitoring...', level = ReportLevels.EXTRA)
# If there are any draining containers, add them to the watcher thread.
with self.watcher_lock:
self.containers_watched.extend(draining_containers)
# Call the event to wakeup the watcher thread.
if draining_containers:
self.watcher_event.set()
# If in local mode, then wait until all the containers have drained. This
# prevents the python debugger from shutting down, since the other threads
# are all daemon threads.
if not self.daemon_mode and draining_containers:
while True:
self.watcher_thread.join(10)
if not self.watcher_thread.isAlive():
break
def getContainerInformation(self):
""" Returns the container status information for all containers. """
client = getDockerClient()
information = []
for container in self.getAllContainers(client):
information.append((container, getContainerStatus(container)))
return information
def getContainerInformation(self):
""" Returns the container status information for all containers. """
client = getDockerClient()
information = []
for container in self.getAllContainers(client):
information.append((container, getContainerStatus(container)))
return information
def getPrimaryContainer(self):
""" Returns the container for this component that is not marked as draining or None if
none.
"""
client = getDockerClient()
for container in self.getAllContainers(client):
if getContainerStatus(container) != 'draining':
return container
return None
def getPrimaryContainer(self):
""" Returns the container for this component that is not marked as draining or None if
none.
"""
client = getDockerClient()
for container in self.getAllContainers(client):
if getContainerStatus(container) != 'draining':
return container
return None
def updateProxy(self):
""" Updates the proxy used for port mapping to conform to the current running container
list.
"""
client = getDockerClient()
# Clear all routes in the proxy.
# TODO: When this is in daemon mode, don't need do this. We could selectively
# edit it instead.
self.proxy.clear_routes()
# Add routes for the non-draining containers and collect the draining containers to
# watch.
report('Finding running containers...', level=ReportLevels.EXTRA)
draining_containers = []
starting_containers = []
for component in self.components.values():
for container in component.getAllContainers(client):
if getContainerStatus(container) != 'draining':
container_ip = containerutil.getContainerIPAddress(client, container)
starting_containers.append(container)
# Add the normal exposed ports.
for mapping in component.config.ports:
route = Route(mapping.kind == 'http', mapping.external, container_ip,
mapping.container)
self.proxy.add_route(route)
# Add the container link ports.
for link in component.config.defined_component_links:
route = Route(link.kind == 'http', link.getHostPort(), container_ip, link.port)
self.proxy.add_route(route)
else:
draining_containers.append(container)
# Commit the changes to the proxy.
if draining_containers or starting_containers:
report('Updating proxy...', level=ReportLevels.EXTRA)
self.proxy.commit()
else:
report('Shutting down proxy...', level=ReportLevels.EXTRA)
self.proxy.shutdown()
# Mark the starting containers as running.
for container in starting_containers:
setContainerStatus(container, 'running')
