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#!/usr/bin/env python
# Copyright (c) Authors of Clover
#
# All rights reserved. This program and the accompanying materials
# are made available under the terms of the Apache License, Version 2.0
# which accompanies this distribution, and is available at
# http://www.apache.org/licenses/LICENSE-2.0
import sys
sys.path.insert(0, '..')
from orchestration import kube_client
import servicemesh.route_rules as rr
from tracing.tracing import Tracing
class ValidateWRR(object):
def __init__(self, test_id, tracing_ip='localhost', tracing_port='31298'):
self._k8s_client = kube_client.KubeClient()
self._test_id = test_id
self._tracing = Tracing(tracing_ip, tracing_port)
def check_pods_up(self, pod_list, namespace='default'):
for pod in pod_list:
up, name = self._k8s_client.check_pod_up(pod, namespace)
if not up:
print('pod %s in namespace %s not up' % (pod, namespace))
return False
return True
def set_test_id(self, test_id):
self._test_id = test_id
def validate(self, service_name):
total = 0
svc = self._k8s_client.find_svc_by_namespace(svc_name=service_name)
if not svc:
err_msg = 'Failed to locate service %s in default namespace' % service_name
print err_msg
return False, [err_msg]
pods = self._k8s_client.find_pod_by_namespace()
if not pods:
err_msg = 'No pod found in default namespace'
return False, [err_msg]
svc_pods = {}
for p,l in pods.items():
pod_labels = l.get('labels')
svc_selector_dict = svc[service_name].get('selector')
for svc_select_key in svc_selector_dict:
if svc_select_key in pod_labels:
if svc_selector_dict[svc_select_key] == pod_labels[svc_select_key]:
svc_pods[p] = l
trace_ids = self._tracing.getRedisTraceids(self._test_id)
rr_dict = {'service': service_name}
ver_count_dict = {}
for trace_id in trace_ids:
span_ids = self._tracing.getRedisSpanids(trace_id)
for span in span_ids:
# count only the received side --- i.e., messages sent TO
# service
node_id = self._tracing.getRedisTagsValue(span, trace_id, 'node_id')
direction = self._tracing.getRedisTagsValue(span, trace_id, 'upstream_cluster')
if direction.startswith('in.'):
for pod_name in svc_pods:
if pod_name in node_id:
total += 1
labels = svc_pods[pod_name]['labels']
print('node %s pod %s labels %s' % (node_id, pod_name, labels))
if 'version' in labels:
version = labels.get('version')
if version in ver_count_dict:
ver_count_dict[version] += 1
else:
ver_count_dict[version] = 1
print('total is %d, ver_count_dict is %s' % (total, ver_count_dict))
if ver_count_dict and total > 0:
for version in ver_count_dict:
rr_dict[version] = float(ver_count_dict[version]) / float(total) * 100
return(rr.validate_weighted_route_rules(rr_dict, self._test_id))
else:
err_msg = 'No version label found on any pod'
print(err_msg)
return False, [err_msg]
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