Build with Buck
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
diff --git a/tools/pack_war.py b/tools/pack_war.py
new file mode 100755
index 0000000..1c14bc8
--- /dev/null
+++ b/tools/pack_war.py
@@ -0,0 +1,53 @@
+#!/usr/bin/python
+# Copyright (C) 2013 The Android Open Source Project
+#
+# 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
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from optparse import OptionParser
+from os import environ, makedirs, path, symlink
+from subprocess import check_call
+try:
+ from subprocess import check_output
+except ImportError:
+ from subprocess import Popen, PIPE
+ def check_output(*cmd):
+ return Popen(*cmd, stdout=PIPE).communicate()[0]
+
+opts = OptionParser()
+opts.add_option('-o', help='path to write WAR to')
+opts.add_option('--lib', action='append', help='target for WEB-INF/lib')
+opts.add_option('--pgmlib', action='append', help='target for WEB-INF/pgm-lib')
+args, ctx = opts.parse_args()
+
+war = environ['TMP']
+root = war[:war.index('buck-out')]
+jars = set()
+
+def link_jars(libs, dir):
+ makedirs(dir)
+ cp = check_output(['buck', 'audit', 'classpath'] + libs)
+ for j in cp.strip().splitlines():
+ if j not in jars:
+ jars.add(j)
+ n = path.basename(j)
+ if j.startswith('buck-out/gen/gerrit-'):
+ n = j.split('/')[2] + '-' + n
+ symlink(path.join(root, j), path.join(dir, n))
+
+if args.lib:
+ link_jars(args.lib, path.join(war, 'WEB-INF', 'lib'))
+if args.pgmlib:
+ link_jars(args.pgmlib, path.join(war, 'WEB-INF', 'pgm-lib'))
+for s in ctx:
+ check_call(['unzip', '-q', '-d', war, s])
+check_call(['zip', '-9qr', args.o, '.'], cwd = war)
