How to check state

There are 4 states in system, check state by:

make test_state

INIT

• Config exists - False
• Config_queued exists - False
• System config exists - False
• Service running - False

CONFGENED

• Config exists - False
• Config_queued exists - True
• System config exists - False
• Service running - False

RUNNING

In this state, config and config_queued are exactly the same

• Config exists - True
• Config_queued exists - True
• System config exists - True
• Service running - True

CONFQUEUED

In this state, config and config_queued are probably NOT the same

• Config exists - True
• Config_queued exists - True
• System config exists - True
• Service running - True

Further explanation of the attributes

• Config
• Config_queued
• System config exists - When it is true, systems files were replaced by configurations that are generated by routing project

• Service running - When it is true, service status is active and iptables rules exist, e.g, in dhcp ubuntu 18.04 mode, service status and iptables rules shown as below:

  Service status

  ● routing.service - Routing
   Loaded: loaded (/etc/systemd/system/routing.service; enabled; vendor preset: enabled)
   Active: active (exited) since Mon 2018-12-17 15:35:45 CST; 52min ago
  Process: 1839 ExecStart=/usr/bin/make -f /etc/routing/Makefile start (code=exited, status=0/SUCCESS)
  Main PID: 1839 (code=exited, status=0/SUCCESS)
    Tasks: 0
   Memory: 0B
      CPU: 0
   CGroup: /system.slice/routing.service
  

  iptables rules

  -P POSTROUTING ACCEPT
  -A POSTROUTING -o enp2s0 -j MASQUERADE
  -P FORWARD ACCEPT
  -A FORWARD -i enp2s0 -o br0 -p tcp -m tcp --tcp-flags FIN,SYN,RST,ACK SYN -m conntrack --ctstate NEW -j ACCEPT
  -A FORWARD -i enp2s0 -o br0 -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
  -A FORWARD -i br0 -o enp2s0 -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT