def on_get(self, req, resp):
"""
Handles GET requests for Clusters.
:param req: Request instance that will be passed through.
:type req: falcon.Request
:param resp: Response instance that will be passed through.
:type resp: falcon.Response
"""
req.context['model'] = None
try:
clusters = Clusters.retrieve()
except:
self.logger.warn(
'Etcd does not have any clusters. Returning [] and 404.')
resp.status = falcon.HTTP_404
return
if clusters.clusters == []:
self.logger.debug(
'Etcd has a clusters directory but no content.')
resp.status = falcon.HTTP_200
return
req.context['model'] = clusters
def on_delete(self, req, resp, address):
"""
Handles the Deletion of a Host.
:param req: Request instance that will be passed through.
:type req: falcon.Request
:param resp: Response instance that will be passed through.
:type resp: falcon.Response
:param address: The address of the Host being requested.
:type address: str
"""
resp.body = "{}"
try:
Host.delete(address)
resp.status = falcon.HTTP_200
except:
resp.status = falcon.HTTP_404
# Also remove the host from all clusters.
# Note: We've done all we need to for the host deletion,
# so if an error occurs from here just log it and
# return.
try:
clusters = Clusters.retrieve()
except:
self.logger.warn("Etcd does not have any clusters")
return
try:
for cluster_name in clusters.clusters:
self.logger.debug("Checking cluster {0}".format(cluster_name))
cluster = Cluster.retrieve(cluster_name)
if address in cluster.hostset:
self.logger.info("Removing {0} from cluster {1}".format(address, cluster_name))
cluster.hostset.remove(address)
cluster.save(cluster_name)
self.logger.info("{0} has been removed from cluster {1}".format(address, cluster_name))
except:
self.logger.warn("Failed to remove {0} from cluster {1}".format(address, cluster_name))
