利用forkmanager和anyevent-server实现类似nginx的surpervisor和worker模式
nginx启动后，会根据worker配置数量fork对应进程数，同时启动父进程作为surpervisor，当worker进程数减少时会自动补充对应worker，我们的目标是利用forkmanager实现该功能，提供给httpserver使用。
思路
- 利用forkmanager的on_start和on_finish事件，记录进入和退出的子进程；
- 利用forkmanager的start和finish控制总开启数量；
- 父进程注册TERM、INT、KILL信号，当退出进程号和父进程相同，发送term信号给各个子进程终止
- 子进程使用ae signal模块监听TERM、INT、KILL三种信号关闭ev循环并退出
实现
- 启动5个线程worker，curl测试服务正常
-bash-4.1# nohup perl anyevent-http-server.pl -t 5 &
[1] 3999
-bash-4.1# nohup: 忽略输入并把输出追加到"nohup.out"
-bash-4.1# ps -ef|grep anyevent-http-server.pl
root 3999 27832 5 15:24 pts/3 00:00:00 perl anyevent-http-server.pl -t 5
root 4000 3999 0 15:24 pts/3 00:00:00 perl anyevent-http-server.pl -t 5
root 4001 3999 0 15:24 pts/3 00:00:00 perl anyevent-http-server.pl -t 5
root 4002 3999 0 15:24 pts/3 00:00:00 perl anyevent-http-server.pl -t 5
root 4003 3999 0 15:24 pts/3 00:00:00 perl anyevent-http-server.pl -t 5
root 4004 3999 0 15:24 pts/3 00:00:00 perl anyevent-http-server.pl -t 5
root 4008 27832 0 15:24 pts/3 00:00:00 grep anyevent-http-server.pl
- 关闭worker 4000，自动启动新的worker 4017，服务没有任何影响
-bash-4.1# kill 4000
-bash-4.1# ps -ef|grep anyevent-http-server.pl
root 3999 27832 1 15:24 pts/3 00:00:00 perl anyevent-http-server.pl -t 5
root 4001 3999 0 15:24 pts/3 00:00:00 perl anyevent-http-server.pl -t 5
root 4002 3999 0 15:24 pts/3 00:00:00 perl anyevent-http-server.pl -t 5
root 4003 3999 0 15:24 pts/3 00:00:00 perl anyevent-http-server.pl -t 5
root 4004 3999 0 15:24 pts/3 00:00:00 perl anyevent-http-server.pl -t 5
root 4017 3999 0 15:24 pts/3 00:00:00 perl anyevent-http-server.pl -t 5
root 4021 27832 0 15:24 pts/3 00:00:00 grep anyevent-http-server.pl
- 关闭父进程，所有进程关闭
-bash-4.1# kill 3999
-bash-4.1# ps -ef|grep anyevent-http-server.pl
root 4036 27832 0 15:24 pts/3 00:00:00 grep anyevent-http-server.pl
[1]+ Done nohup perl anyevent-http-server.pl -t 5
benchmark
并发100 5000连接
- 1 worker模式
Requests per second: 682.94 [#/sec] (mean) - 5 worker模式
Requests per second: 4486.96 [#/sec] (mean)
并发1 5000连接
- 1 worker模式
Requests per second: 854.15 [#/sec] (mean) - 5 worker模式
Requests per second: 876.04 [#/sec] (mean)
打开keepalive 并发100 5000连接
Requests per second: 5357.12 [#/sec] (mean)
接收http请求后，利用coro-telnet和coro-snmp实现协程建立和设备交互session完成请求指标并返回
- 通过协程组进行设备交互，使用async_pool监听完成状态，通过anyevent::timer异步实现状态和log的response。
- 附上http请求和telnet服务结果，发送一次http请求，请50台设备做show users只要6秒钟就可以返回
-bash-4.3$ time curl http://127.0.0.10:19999?pretty -d '{
> "hostip": "1.1.1.1,2.2.2.2,3.3.3.3",
> "items": "show users"
> }'
...
...
real 0m6.008s
user 0m0.002s
sys 0m0.003s
bash-4.1$ curl http://127.0.0.1:19999?pretty -d '{
"hostip": "192.168.6.87,192.168.6.87,192.168.6.87",
"items": "show users"
}'
show users
Line User Host(s) Idle Location
66 vty 0 aaa idle 00:00:00 192.168.6.150
67 vty 1 aaa idle 00:00:03 192.168.6.150
Interface User Mode Idle Peer Address
BJ-BJ-ZU-V-2.test
##################################0##################################
show users
Line User Host(s) Idle Location
66 vty 0 aaa idle 00:00:00 192.168.6.150
67 vty 1 aaa idle 00:00:03 192.168.6.150
Interface User Mode Idle Peer Address
BJ-BJ-ZU-V-2.test
##################################1##################################
show users
Line User Host(s) Idle Location
66 vty 0 aaa idle 00:00:00 192.168.6.150
67 vty 1 aaa idle 00:00:00 192.168.6.150
69 vty 3 aaa idle 00:00:00 192.168.6.150
Interface User Mode Idle Peer Address
BJ-BJ-ZU-V-2.test
##################################2##################################
You have mail in /var/spool/mail/slview
bash-4.1$
bash-4.1$ time curl http://192.168.6.150:18888?pretty -d '{
> "hostip": "192.168.6.87,192.168.6.87,192.168.6.87",
> "items": "ifhcinoctets"
> }'
"192.168.6.87_1_ifhcinoctets": "12010862272"
"192.168.6.87_4_ifhcinoctets": "0"
"192.168.6.87_5_ifhcinoctets": "0"
...
...
##################################2##################################
real 0m3.014s
user 0m0.007s
sys 0m0.004s
