如何从Hyperledger Fabric链码打印和查看日志 [英] How to print and view logs from Hyperledger Fabric chaincode

问题描述

出于调试目的，我希望在调用链代码中的函数时看到日志.我尝试过这样的事情:

I want to see logs while calling functions in my chaincode, for debugging purposes. I tried something like this:

var logger = shim.NewLogger("chaincode_example02")
logger.Info("get_caller_data called");

我已经查看了运行链码的对等方的日志，但是找不到上述日志.我究竟做错了什么?

I've viewed logs of the peer running the chaincode, but I couldn't find the above log. What am I doing wrong?

推荐答案

如果使用诸如./chaincode_example02之类的命令在开发模式下启动链码，则日志语句应在启动相同进程的控制台中可见.

If you startup your chaincode in dev mode using a command like ./chaincode_example02, then the log statements should be visible in the console where that same process is started.

如果以网络模式部署链码，则每个对等方都会启动一个名为<networkId>-<peer enroll id>-<chaincode Id>之类的docker容器.您可以使用命令docker ps查看在对等方上启动的所有docker容器，并查看使用命令docker logs <container id (get this from the previous command)>

If you deploy the chaincode in net mode then each peer starts up a docker container that is named something like <networkId>-<peer enroll id>-<chaincode Id> .You can view all the docker containers started up on a peer by using the command docker ps, and view the content of a log by using the command docker logs <container id (get this from the previous command)>

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