Logging

We have common libs those are reused in both environments: Android and Gradle. So we need a logger is not dependent on the concrete environment. We've created com.avito.logger.Logger. It helps us to reuse code.

Logging in Gradle

To obtain a logger for Gradle we create the GradleLoggerPlugin. It must be applied to the root project before others plugins dependent on it. You create LoggerFactory for a project or a task

val projectLoggerFactory = GradleLoggerPlugin.getLoggerFactory(project)
val taskLoggerFactory = GradleLoggerPlugin.getLoggerFactory(task)

PrintlnLoggerHandler

Gradle uses lifecycle level by default, but to see info or debug level you have to set it for the whole Gradle run via --info or --debug, which made console output unreadable and build slow.

There is an issue for that: gradle/#1010 Ability to set log level for specific task

PrintlnLoggerHandler adds the ability to tune log level for avito plugins separately

Logging in Android

To obtain a logger for Android create a LoggerFactory by LoggerFactoryBuilder

Testing

StubLoggerFactory and StubLogger can be used in tests.

StubLogger will write to stdout only during test runs from IDE.