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#!/usr/bin/env python
#coding: utf-8
#file : test_reload.py
#author : ning
#date : 2014-09-03 12:28:16
import os
import sys
import redis
PWD = os.path.dirname(os.path.realpath(__file__))
WORKDIR = os.path.join(PWD,'../')
sys.path.append(os.path.join(WORKDIR,'lib/'))
sys.path.append(os.path.join(WORKDIR,'conf/'))
import conf
from server_modules import *
from utils import *
from nose import with_setup
CLUSTER_NAME = 'ntest'
nc_verbose = int(getenv('T_VERBOSE', 5))
mbuf = int(getenv('T_MBUF', 512))
large = int(getenv('T_LARGE', 1000))
T_RELOAD_DELAY = 3 + 1
all_redis = [
RedisServer('127.0.0.1', 2100, '/tmp/r/redis-2100/', CLUSTER_NAME, 'redis-2100'),
RedisServer('127.0.0.1', 2101, '/tmp/r/redis-2101/', CLUSTER_NAME, 'redis-2101'),
]
nc = NutCracker('127.0.0.1', 4100, '/tmp/r/nutcracker-4100', CLUSTER_NAME,
all_redis, mbuf=mbuf, verbose=nc_verbose)
def _setup():
print 'setup(mbuf=%s, verbose=%s)' %(mbuf, nc_verbose)
for r in all_redis + [nc]:
r.deploy()
r.stop()
r.start()
def _teardown():
for r in all_redis + [nc]:
assert(r._alive())
r.stop()
def get_tcp_conn(host, port):
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect((host, port))
s.settimeout(.3)
return s
def send_cmd(s, req, resp):
s.sendall(req)
data = s.recv(10000)
assert(data == resp)
@with_setup(_setup, _teardown)
def test_reload_with_old_conf():
if nc.version() < '0.4.2':
print 'Ignore test_reload for version %s' % nc.version()
return
pid = nc.pid()
# print 'old pid:', pid
r = redis.Redis(nc.host(), nc.port())
r.set('k', 'v')
conn = get_tcp_conn(nc.host(), nc.port())
send_cmd(conn, '*2\r\n$3\r\nGET\r\n$1\r\nk\r\n', '$1\r\nv\r\n')
# nc.reload() is same as nc.stop() and nc.start()
nc.reload()
time.sleep(.01) #it need time for the old process fork new process.
# the old connection is still ok in T_RELOAD_DELAY seconds
send_cmd(conn, '*2\r\n$3\r\nGET\r\n$1\r\nk\r\n', '$1\r\nv\r\n')
# conn2 should connect to new instance
conn2 = get_tcp_conn(nc.host(), nc.port())
send_cmd(conn2, '*2\r\n$3\r\nGET\r\n$1\r\nk\r\n', '$1\r\nv\r\n')
# the old connection is still ok in T_RELOAD_DELAY seconds
send_cmd(conn, '*2\r\n$3\r\nGET\r\n$1\r\nk\r\n', '$1\r\nv\r\n')
time.sleep(T_RELOAD_DELAY)
assert(pid != nc.pid())
# assert the old connection is closed.
send_cmd(conn, '*2\r\n$3\r\nGET\r\n$1\r\nk\r\n', '')
# conn2 should survive
send_cmd(conn2, '*2\r\n$3\r\nGET\r\n$1\r\nk\r\n', '$1\r\nv\r\n')
r = redis.Redis(nc.host(), nc.port())
rst = r.set('k', 'v')
assert(r.get('k') == 'v')
@with_setup(_setup, _teardown)
def test_new_port():
if nc.version() < '0.4.2':
print 'Ignore test_reload for version %s' % nc.version()
return
r = redis.Redis(nc.host(), nc.port())
r.set('k', 'v')
content = '''
reload_test:
listen: 0.0.0.0:4101
hash: fnv1a_64
distribution: modula
redis: true
timeout: 400
servers:
- 127.0.0.1:2100:1 redis-2100
- 127.0.0.1:2101:1 redis-2101
'''
nc.set_config(content)
time.sleep(T_RELOAD_DELAY)
r1 = redis.Redis(nc.host(), nc.port())
r2 = redis.Redis(nc.host(), 4101)
assert_fail('Connection refused', r1.get, 'k')
assert(r2.get('k') == 'v')
@with_setup(_setup, _teardown)
def test_pool_add_del():
if nc.version() < '0.4.2':
print 'Ignore test_reload for version %s' % nc.version()
return
r = redis.Redis(nc.host(), nc.port())
r.set('k', 'v')
content = '''
reload_test:
listen: 0.0.0.0:4100
hash: fnv1a_64
distribution: modula
redis: true
servers:
- 127.0.0.1:2100:1 redis-2100
- 127.0.0.1:2101:1 redis-2101
reload_test2:
listen: 0.0.0.0:4101
hash: fnv1a_64
distribution: modula
redis: true
servers:
- 127.0.0.1:2100:1 redis-2100
- 127.0.0.1:2101:1 redis-2101
'''
nc.set_config(content)
time.sleep(T_RELOAD_DELAY)
r1 = redis.Redis(nc.host(), nc.port())
r2 = redis.Redis(nc.host(), 4101)
assert(r1.get('k') == 'v')
assert(r2.get('k') == 'v')
content = '''
reload_test:
listen: 0.0.0.0:4102
hash: fnv1a_64
distribution: modula
redis: true
preconnect: true
servers:
- 127.0.0.1:2100:1 redis-2100
- 127.0.0.1:2101:1 redis-2101
'''
nc.set_config(content)
time.sleep(T_RELOAD_DELAY)
pid = nc.pid()
print system('ls -l /proc/%s/fd/' % pid)
r3 = redis.Redis(nc.host(), 4102)
assert_fail('Connection refused', r1.get, 'k')
assert_fail('Connection refused', r2.get, 'k')
assert(r3.get('k') == 'v')
fds = system('ls -l /proc/%s/fd/' % pid)
sockets = [s for s in fds.split('\n') if strstr(s, 'socket:') ]
# pool + stat + 2 backend + 1 client
assert(len(sockets) == 5)
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