kidfolk / hugo

Annotation-triggered method call logging for your debug builds.

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Annotation-triggered method call logging for your debug builds.

As a programmer, you often add log statements to print method calls, their arguments, their return values, and the time it took to execute. This is not a question. Every one of you does this. Shouldn't it be easier?

Simply add @DebugLog to your methods and you will automatically get all of the things listed above logged for free.

public String getName(String first, String last) {
  SystemClock.sleep(15); // Don't ever really do this!
  return first + " " + last;
D/Example: ⇢ getName(first="Jake", last="Wharton")
D/Example: ⇠ getName = "Jake Wharton" [16ms]

The logging will only happen in debug builds and the annotation itself is never present in the compiled class file for any build type. This means you can keep the annotation and check it into source control. It has zero effect on non-debug builds.

Add it to your project today!

buildscript {
  dependencies {
    classpath 'com.jakewharton.hugo:hugo-plugin:1.0.0'

apply plugin: 'hugo'

Local Development

Working on this project? Here's some helpful Gradle tasks:

  • install - Install plugin, runtime, and annotations into local repo.
  • cleanExample - Clean the example project build.
  • assembleExample - Build the example project. Must run install first.
  • installExample - Build and install the example project debug APK onto a device.


Copyright 2013 Jake Wharton

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
See the License for the specific language governing permissions and
limitations under the License.


Annotation-triggered method call logging for your debug builds.

License:Apache License 2.0