FYI maven-reactor-plugin 1.0-SNAPSHOT has a site now:
http://maven.apache.org/plugins/maven-reactor-plugin/
I certainly approve of the idea of rolling at least the "make"
"makeDependents" and "resume" parts of this into core, though there's two
caveats here:
1) I think I'd like to release this plugin sometime earlier than that,
perhaps as a mojo.codehaus.org plugin if not as an official Apache Maven
plugin. (Though I did already add the Apache license text to all of the
source files...)
There's a lot of people on 2.0.x who will take a while to upgrade to
2.1.x, who can benefit from this plugin today.
I presume the reason nobody's done this until now is that we've thought
that it couldn't/shouldn't be done as a plugin...?
2) It would be a bit weird to roll in "makeMyChanges" into the core.
makeMyChanges queries SCM to find changed files; rolling it into core
would require core to depend on maven-scm (which, I think, it doesn't
right now...?) to determine what has changed.
Despite that, I think it's arguably the most useful command in the plugin.
Where would *that* go?
-Dan
Brian E. Fox wrote:
I think this looks pretty sweet and similar to the proposal I wrote last
year (but didn't implement yet):
http://docs.codehaus.org/display/MAVEN/Make+Like+Reactor+Mode
I think that this really belongs in core. Now that trunk has moved to
3.0 and we will have a new 2.1 branch (when we decide to cut it from
2.0.10 or 2.0.9...not sure where the current one came from), this would
be perfect to fit in as a new feature. I don't want the new 2.1.0 to
grow into a monster so for example we could implement this and release
it, then we could add the parallel download and release as 2.2 etc.
-----Original Message-----
From: Dan Fabulich [mailto:[EMAIL PROTECTED]
Sent: Thursday, August 14, 2008 8:38 PM
To: Maven Users List; Maven Developers List
Subject: New sandbox plugin: maven-reactor-plugin
I've checked in a new plugin to the sandbox called the "Maven Reactor
Plugin". You can use it to build a subset of interdependent projects in
a
reactor. It should be useful in large reactor builds that include
irrelevant stuff you're not working on.
It includes the following goals:
reactor:resume - resume a reactor at a certain point (e.g. when it fails
in the middle)
Example: mvn reactor:resume -Dfrom=bar
reactor:make - build a project X and all of the reactor projects on
which
X depends
Example: mvn reactor:make -Dmake.folders=foo,bar
reactor:makeDependents - build a project X and all of the reactor
projects
that depend on X
Example: mvn reactor:make -Dmake.folders=foo,bar
(e.g. if foo depends on baz and quz depends on bar, :make will build
foo,bar,baz whereas :makeDependents will build foo,bar,quz)
reactor:makeMyChanges - build all reactor projects that you personally
have changed (according to SCM) and all reactor projects that depend
on your changes
Example: mvn reactor:makeMyChanges
All of these take an argument -Dmake.printOnly which you can use to see
what the plugin would have done without actually doing it. (This is
handy
for debugging and exploration.)
This plugin was easy to write, so I fear that it may duplicate other
work,
or that there may already be some clever command line tool to do this
stuff.
Feedback is appreciated. It seems to kinda-sorta work on my machine.
The sources are here:
https://svn.apache.org/repos/asf/maven/sandbox/trunk/plugins/maven-react
or-plugin
there are some TODOs:
http://svn.apache.org/viewvc/maven/sandbox/trunk/plugins/maven-reactor-p
lugin/TODO.txt?view=markup
I've deployed a snapshot:
http://people.apache.org/repo/m2-snapshot-repository/org/apache/maven/pl
ugins/maven-reactor-plugin/
If you want to try it on your machine, copy and paste this POM into a
file (e.g. myfile.xml):
<project xmlns="http://maven.apache.org/POM/4.0.0";
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0
http://maven.apache.org/maven-v4_0_0.xsd";>
<modelVersion>4.0.0</modelVersion>
<groupId>example</groupId>
<artifactId>example</artifactId>
<packaging>jar</packaging>
<version>1.0-SNAPSHOT</version>
<name>example</name>
<dependencies>
<dependency>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-reactor-plugin</artifactId>
<version>1.0-SNAPSHOT</version>
<type>maven-plugin</type>
</dependency>
</dependencies>
<repositories>
<repository>
<id>apache-snapshots</id>
<url>http://people.apache.org/repo/m2-snapshot-repository/</url>
</repository>
</repositories>
</project>
Then run "mvn -U -cpu -f myfile.xml dependency:resolve". That should
download the deployed snapshot into your local repository.
Since it's a snapshot, you'll have to run it like this:
mvn org.apache.maven.plugins:maven-reactor-plugin:1.0-SNAPSHOT:make
-Dmake.printOnly -Dmake.folders=foo
Please do that and e-mail me to let me know what breaks, or tell me that
I'm an idiot. :-)
-Dan
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