Apollo: Is there any way to see some terminal output while running?

[Turi30]

I want to print on terminal some information during the execution. Is there any way?

[daohu527]

If you only need to debug, the easiest way is use AERROR instead of AINFO

[Turi30]

Using AERROR where I can see the information?

[daohu527]

How did you start the module?

1. If you use dreamview, there is no output to console. Because it call std::system
   https://github.com/ApolloAuto/apollo/blob/10bac81cc272dfa2bec13875bb0342848bd933d0/modules/dreamview/backend/hmi/hmi_worker.cc#L126-L134

1. If you use cyber_launch start modules/routing/launch/routing.launch , logs greater than the info level will be output to the console. You can also output the info log level to console use GLOG_alsologtostderr=1, but there will be a lot of logs, I think you may not need most of them. So uses the AERROR will be better for debug.
   https://github.com/ApolloAuto/apollo/blob/eb2761c0fb1100d1a4a457520e7685fcadc85788/cyber/setup.bash#L37-L40

[Turi30]

1. If you use cyber_launch start modules/routing/launch/routing.launch, logs greater than the info level will be output to the console. You can also output the info log level to console use GLOG_alsologtostderr=1, but there will be a lot of logs, I think you may not need most of them. So uses the AERROR will be better for debug.
   https://github.com/ApolloAuto/apollo/blob/eb2761c0fb1100d1a4a457520e7685fcadc85788/cyber/setup.bash#L37-L40
   To use this method, how should I compile apollo?
   I give these commands:
2. ./docker/scripts/dev_start.sh
3. ./docker/scripts/dev_into.sh

1. ./apollo.sh build or should I put build_dbg option?
2. At the end ./scripts/cyber_launch.sh start?

[daohu527]

You can refer to the official documentation to start apollo. doc
Then use cmd like below

cyber_launch start modules/routing/launch/routing.launch