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# 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
from flask import Blueprint, request, Response
import grpc
import pickle
import collector_pb2
import collector_pb2_grpc
import redis
import logging
collector = Blueprint('collector', __name__)
grpc_port = '50054'
pod_name = 'clover-collector.clover-system'
collector_grpc = pod_name + ':' + grpc_port
channel = grpc.insecure_channel(collector_grpc)
stub = collector_pb2_grpc.ControllerStub(channel)
CASSANDRA_HOSTS = pickle.dumps(['cassandra.clover-system'])
HOST_IP = 'redis.default'
@collector.route("/collector/init")
def init():
try:
response = stub.InitVisibility(collector_pb2.ConfigCassandra(
cassandra_hosts=CASSANDRA_HOSTS, cassandra_port=9042))
except Exception as e:
logging.debug(e)
if e.__class__.__name__ == "_Rendezvous":
return Response("Error connecting via gRPC", status=400)
else:
return Response("Error initializing visibility", status=400)
return response.message
@collector.route("/collector/truncate")
def truncate():
try:
schemas = pickle.dumps(['spans', 'traces', 'metrics'])
response = stub.TruncateVisibility(collector_pb2.Schemas(
schemas=schemas, cassandra_hosts=CASSANDRA_HOSTS,
cassandra_port=9042))
except Exception as e:
logging.debug(e)
if e.__class__.__name__ == "_Rendezvous":
return Response("Error connecting via gRPC", status=400)
else:
return Response("Error truncating visibility", status=400)
return response.message
@collector.route("/collector/start", methods=['GET', 'POST'])
def start():
try:
p = request.json
if not p:
sample_interval = '5'
t_host = 'tracing.istio-system'
t_port = '16686'
m_host = 'prometheus.istio-system'
m_port = '9090'
else:
try:
sample_interval = p['sample_interval']
t_host = p['t_host']
t_port = p['t_port']
m_host = p['m_host']
m_port = p['m_port']
except (KeyError, ValueError) as e:
logging.debug(e)
return Response("Invalid value in json/yaml", status=400)
response = stub.StartCollector(collector_pb2.ConfigCollector(
t_port=t_port, t_host=t_host,
m_port=m_port, m_host=m_host,
c_port='9042', c_hosts=CASSANDRA_HOSTS,
sinterval=sample_interval))
except Exception as e:
logging.debug(e)
if e.__class__.__name__ == "_Rendezvous":
return Response("Error connecting via gRPC", status=400)
else:
return Response("Error starting visibility", status=400)
return response.message
@collector.route("/collector/stop")
def stop():
try:
response = stub.StopCollector(collector_pb2.ConfigCollector())
except Exception as e:
logging.debug(e)
if e.__class__.__name__ == "_Rendezvous":
return Response("Error connecting via gRPC", status=400)
else:
return Response("Error stopping visibility", status=400)
return response.message
@collector.route("/collector/set", methods=['GET', 'POST'])
def set_collector():
try:
p = request.json
r = redis.StrictRedis(host=HOST_IP, port=6379, db=0)
del_keys = ['visibility_services', 'metric_prefixes',
'metric_suffixes', 'custom_metrics']
for dk in del_keys:
r.delete(dk)
try:
for service in p['services']:
r.sadd('visibility_services', service['name'])
except (KeyError, ValueError) as e:
logging.debug(e)
return Response(
"Specify at least one service to track", status=400)
if p['metric_prefixes'] and p['metric_suffixes']:
for prefix in p['metric_prefixes']:
r.sadd('metric_prefixes', prefix['prefix'])
for suffix in p['metric_suffixes']:
r.sadd('metric_suffixes', suffix['suffix'])
if p['custom_metrics']:
for metric in p['custom_metrics']:
r.sadd('custom_metrics', metric['metric'])
except Exception as e:
logging.debug(e)
return Response("Error setting visibility config", status=400)
return Response("Updated visibility config", status=200)
@collector.route("/collector/test")
def test():
return "<h1 style='color:blue'>Collector API Test Response</h1>"
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