GWT 2.6.0 has Java 7 support and other new features [1].
Internal Jetty version, shipped with GWT was updated to 8.1. This
version collides with the version that is used internally by Gerrit
(9.1). To resolve the conflict, GWT's own Jetty version is stripped
from the gwt-dev.jar with maven_jar() method and Gerrit's own Jetty
used instead. Missing Jetty artifacts, needed for the GWT to run in
dev mode:
* jetty-webapp
* jetty-xml
are included now as dependency of gerrit-gwtdebug project.
New GWT version updates a number of dependencies that are used in
Gerrit [3]. Update them too.
EditIteratorTest test is failing with NSME Exception in gwt-test-utils
framework, so deactivate it for now [2].
[1] http://www.gwtproject.org/release-notes.html#Release_Notes_2_6_0_RC1
[2] https://code.google.com/p/gwt-test-utils/issues/detail?id=179
[3]
* Guava 15.0
* Protobuf 2.5.0
* ASM 4.1
Change-Id: I0fa96da6465d52febeae65168b0bd1c2913f6c7e
Buck changed export_deps from a boolean to be exported_deps, a list of
dependencies that are to be added to deps and also exported. This
allows libraries to have dependencies for implementation use only, but
not expose them to callers for linkage.
exported_deps aren't transparently transitive anymore. This mostly
impacts the plugin-api:lib rule.
This is the first time Gerrit is using upstream Buck with no patches.
- Java memory settings for Buck can now be supplied in a project
specific file using `.buckjavaargs` in the root directory. The file
replaces the `.buckrc` previously supported by Gerrit's fork.
- Temporary directories for java_application() invoked from genrule()
is now supplied as part of the arguments using $TMP. This removes
one of the patches Gerrit had for Buck.
- Unit tests use the system temporary directory during testing. This
can be faster if the temporary directory is a tmpfs. Unfortunately
not all passing tests clean up after themselves, making it possible
to exhaust system memory and swap with useless tmpfs contents.
Using the system temporary directory for tests removes another patch
Gerrit had on top of Buck.
Change-Id: I3a9fe4aab0a33a8673df727e618122027a742638
java_library() targets must now list every dependency they need for
an import. This permits buck to run more targets in parallel as it
has a better view of the dependency graph, and opens the door for
buck to make even more optimizations in the future.
Change-Id: I132bf47a725e44ba5950ba6ca76bfa72c3876906
Implement a new build system using Buck[1], Facebook's
open source clone of Google's internal build system.
Pros:
- Concise build language
- Test and build output is concise
- Test failures and stack traces show on terminal
- Reliable incrementals; clean is unnecessary
- Extensible with simple blocks of Python
- Fast
buck: clean: 0.452s, full 1m21.083s [*], no-op: 7.145s,
mvn: clean: 4.596s, full 2m53.776s, no-op: 59.108s,
[*] full build includes downloading all dependencies,
time can vary due to remote server performance.
Cons:
- No Windows support
- No native Maven Central support (added by macros)
- No native GWT, Prolog, or WAR support (added by macros)
- Bootstrap of buck requires Ant
Getting started:
git clone https://gerrit.googlesource.com/buck
cd buck
ant
Mac OS X:
PATH="`pwd`/bin:/System/Library/Frameworks/JavaVM.framework/Versions/Current/Commands:$PATH"
Linux:
PATH="`pwd`/bin:$PATH"
Importing into Eclipse:
$ time buck build :eclipse
0m48.949s
Import existing project from `pwd`
Import 'gerrit' (do not import other Maven based projects)
Expand 'gerrit'
Right click 'buck-out' > Properties
Under Attributes check 'Derived'
If the code doesn't currently compile but an updated classpath
is needed, refresh the configs and obtain missing JARs:
$ buck build :eclipse_project :download
Running JUnit tests:
$ time buck test --all -e slow # skip slow tests
0m19.320s
$ time buck test --all # includes acceptance tests
5m17.517s
Building WAR:
$ buck build :gerrit
$ java -jar buck-out/gen/gerrit.war
Building release:
$ buck test --all && buck build :api :release
$ java -jar buck-out/gen/release.war
$ ls -lh buck-out/gen/{extension,plugin}-api.jar
Downloading dependencies:
Dependencies are normally downloaded automatically, but Buck can
inspect its graph and download missing dependencies so future
compiles can run without the network:
$ buck build :download
[1] http://facebook.github.io/buck/
Change-Id: I40853b108bd8e153cefa0896a5280a9a5ff81655
