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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 cassandra.cluster import Cluster
from cassandra.query import BatchStatement
import logging
CASSANDRA_HOSTS = ['cassandra.default']
class CassandraOps:
def __init__(self, hosts, port=9042, keyspace='visibility'):
logging.basicConfig(filename='cassops.log',
level=logging.DEBUG)
cluster = Cluster(hosts, port=port)
self.session = cluster.connect()
self.keyspace = keyspace
def truncate(self, tables=['traces', 'metrics', 'spans']):
self.session.set_keyspace(self.keyspace)
try:
for table in tables:
self.session.execute("""
TRUNCATE %s
""" % table)
except Exception as e:
logging.debug(e)
def init_visibility(self):
try:
self.session.execute("""
CREATE KEYSPACE %s
WITH replication = { 'class': 'SimpleStrategy',
'replication_factor': '1' }
""" % self.keyspace)
except Exception as e:
logging.debug(e)
self.session.set_keyspace(self.keyspace)
try:
self.session.execute("""
CREATE TABLE IF NOT EXISTS traces (
traceid text,
processes list<text>,
PRIMARY KEY (traceid)
)
""")
self.session.execute("""
CREATE TABLE IF NOT EXISTS spans (
spanid text,
traceid text,
duration int,
start_time int,
processid text,
operation_name text,
node_id text,
http_url text,
upstream_cluster text,
PRIMARY KEY (spanid, traceid)
)
""")
self.session.execute("""
CREATE TABLE IF NOT EXISTS metrics (
m_name text,
m_value text,
m_time text,
service text,
monitor_time timestamp,
PRIMARY KEY (m_name, monitor_time)
)
""")
except Exception as e:
logging.debug(e)
def set_prepared(self):
self.session.set_keyspace(self.keyspace)
self.insert_tracing_stmt = self.session.prepare(
"""
INSERT INTO spans (spanid, traceid, duration, operation_name,
node_id, http_url, upstream_cluster)
VALUES (?, ?, ?, ?, ?, ?, ?)
"""
)
self.insert_metric_stmt = self.session.prepare(
"""
INSERT INTO metrics
(m_name, m_value, m_time, service, monitor_time)
VALUES (?, ?, ?, ?, toTimestamp(now()))
"""
)
def set_batch(self):
self.batch = BatchStatement()
def execute_batch(self):
self.session.execute(self.batch)
def insert_tracing(self, table, traceid, s, tags):
self.session.set_keyspace(self.keyspace)
if 'upstream_cluster' not in tags:
logging.debug('NO UPSTREAM_CLUSTER KEY')
tags['upstream_cluster'] = 'none'
try:
self.batch.add(self.insert_tracing_stmt,
(s['spanID'], traceid, s['duration'],
s['operationName'], tags['node_id'],
tags['http.url'], tags['upstream_cluster']))
except Exception as e:
logging.debug('{} {} {} {} {} {} {}'.format(s['spanID'], traceid,
s['duration'], s['operationName'], tags['node_id'],
tags['http.url'], tags['upstream_cluster']))
logging.debug(e)
def insert_trace(self, traceid, processes):
self.session.set_keyspace(self.keyspace)
self.session.execute(
"""
INSERT INTO traces (traceid, processes)
VALUES (%s, %s)
""",
(traceid, processes)
)
def insert_metric(self, m_name, m_value, m_time, service):
self.session.set_keyspace(self.keyspace)
self.batch.add(self.insert_metric_stmt,
(m_name, m_value, m_time, service))
def main():
cass = CassandraOps(CASSANDRA_HOSTS)
cass.init_visibility()
if __name__ == '__main__':
main()
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