def _check_request(self, application_name, intent_map):
if application_name in settings.LEGACY_APPLICATION_LIST:
return
im = InstanceManagement(
self.huskar_client, application_name, SERVICE_SUBDOMAIN)
im.set_context(self.from_application_name, self.from_cluster_name)
for intent, icluster_names in intent_map.iteritems():
if not icluster_names: # pragma: no cover # TODO: fix
continue
dest_cluster_blacklist = settings.ROUTE_DEST_CLUSTER_BLACKLIST.get(
application_name, [])
if self.hijack_mode is self.Mode.checking:
if icluster_names & set(dest_cluster_blacklist):
continue
if len(icluster_names) > 1:
logger.info(
'[%s]Unstable: %s %s -> %s %s', self.hijack_mode.value,
self.from_application_name, self.from_cluster_name,
application_name, intent_map)
capture_message(
'[%s]RouteHijack unstable' % self.hijack_mode.value,
extra={
'from_application_name': (
self.from_application_name),
'from_cluster_name': self.from_cluster_name,
'application_name': application_name,
'intent_map': repr(intent_map),
'intent': intent,
})
continue
resolved_name = im.resolve_cluster_name(intent)
cluster_name = list(icluster_names)[0]
cluster_name = (
im.resolve_cluster_name(cluster_name) or cluster_name)
if resolved_name != cluster_name:
logger.info(
'[%s]Mismatch: %s %s -> %s %s %s %s',
self.hijack_mode.value, self.from_application_name,
self.from_cluster_name, application_name, intent_map,
resolved_name, cluster_name)
if self.hijack_mode is self.Mode.checking:
capture_message(
'[%s]RouteHijack mismatch' % self.hijack_mode.value,
extra={
'from_application_name': (
self.from_application_name),
'from_cluster_name': self.from_cluster_name,
'application_name': application_name,
'cluster_name': cluster_name,
'intent_map': repr(intent_map),
'intent': intent,
'resolved_name': resolved_name,
})
self.analyse_mismatch(application_name, cluster_name,
resolved_name, intent, intent_map)
def set_link(cls, application_name, cluster_name, link):
im = InstanceManagement(huskar_client, application_name,
SERVICE_SUBDOMAIN)
if not im.list_instance_keys(link, resolve=False):
raise ServiceLinkError('the target cluster is empty.')
present_link_generator = (im.resolve_cluster_name(c) == cluster_name
for c in im.list_cluster_names())
if any(present_link_generator):
raise ServiceLinkError(('{} has been linked, cluster can only be '
'linked once').format(cluster_name))
if im.resolve_cluster_name(link):
raise ServiceLinkError(
('there is a link under {}, cluster can only be '
'linked once').format(link))
if not cls._set_link(application_name, cluster_name, link):
raise ServiceLinkExisted('{} is already linked to {}'.format(
cluster_name, link))