Hands-On Microservices with Kubernetes

Setting up a logger with Go-kit

OK. The interface is generic, but we need an actual logger object to work with. Go-kit supports several writers and logger objects that generate familiar log formats like JSON, logfmt, or logrus out of the box. Let's set up a logger with JSON formatter and a sync writer. A sync writer is safe to use from multiple Go routines, and a JSON formatter formats the key values into a JSON string. In addition, we can add some default fields, such as the service name, which is where the log message is coming from in the source code and the current timestamp. Since we may want to use the same logger specification from multiple services, let's put it in a package all the services can use. One last thing is to add also ...