A Maven Build Timer

DESCRIPTION

The goal for maven-time-tracker is to help build-masters and developers to optimize their Maven builds by precisely measuring the time taken by each step.

USAGE

As of Maven 3.0.1 there is no simple way to hook into org.apache.maven.execution.ExecutionListener. The current implementation therefore duplicates the Maven 3.0 MavenCli class with all required classes from maven-embedder. You can install the tracker via the following steps:

1. Build the tracker with mvn package.

2. Take the maven-time-tracker-*.jar from the target folder and place it inside the Maven installation's lib folder.

3. Change the first line in the first line of m2.conf in the Maven installation's bin directory to:

   main is org.topdesk.maven.tracker.MavenCli from plexus.core

Once you did this Maven is going to print measurements when the build finishes.

PLANS

The tool should measure the following:

• Time taken for each execution during the build
• Time taken should include:
  • wall-clock time
  • CPU time
  • system time

Reports should show:

• Individual execution times
• Summaries
  • per-plugin goal
  • per-plugin
  • per-module
  • for the entire build

Reports should be exportable as:

• plain text (console output)
• XML
• HTML

Installation

• Instead of having to tamper with the Maven installation, the goal is to enable time measurements either as a command-line option, or via adding an <extension> to the project.
• The long-term goal is to have the time measurements be part of Maven itself.