I've to "compile" compass files dynamically in my java soft'. So, following explications found on stackoverflow, I've done these steps :
Get JRuby (1.7.3), configure PATH to jruby.jar and binaries (gem, rake ...) and learn to launch ruby script from Java
Get compass and dependancies gems into a local directory, using following command line
gem install -i ./compass compass
=> So I get a directory ./compass/ containing bin, cache,doc, gems & specifications directories.
Put gems in a jar using following command line (think to use a jar name which is not the same as the gems, to avoid JRuby "require" the jar instead of the gems)
jar cf compass-lib.jar -C compass .
Write a test script test.rb in local directory to test my jar. It contains :
require 'compass'
Compass.add_configuration(
{
:project_path => '.',
:sass_path => 'styles/scss',
:css_path => 'styles/css'
},
'custom' # A name for the configuration, can be anything you want
)
Compass.compiler.compile('test.scss', 'test.css')
Execute this script with JRuby, with following command line :
jruby -I . -rcompass-lib.jar test.rb
And get this error ...
Unable to load Sass. Please install it with one of the following commands:
gem install sass --pre
LoadError: no such file to load -- jar:file:C:/jruby-1.7.3/lib/jruby.jar!/gems/s
ass-3.2.8/lib/sass/../sass
require at org/jruby/RubyKernel.java:1027
require at c:/jruby-1.7.3/lib/ruby/shared/rubygems/custom_require.rb:36
(root) at jar:file:C:/jruby-1.7.3/lib/jruby.jar!/gems/sass-3.2.8/lib/sass/ver
sion.rb:5
require at org/jruby/RubyKernel.java:1027
(root) at c:/jruby-1.7.3/lib/ruby/shared/rubygems/custom_require.rb:1
require at c:/jruby-1.7.3/lib/ruby/shared/rubygems/custom_require.rb:36
require at org/jruby/RubyKernel.java:1027
(root) at jar:file:C:/jruby-1.7.3/lib/jruby.jar!/gems/sass-3.2.8/lib/sass.rb:
9
(root) at c:/jruby-1.7.3/lib/ruby/shared/rubygems/custom_require.rb:1
require at org/jruby/RubyKernel.java:1027
require at c:/jruby-1.7.3/lib/ruby/shared/rubygems/custom_require.rb:60
(root) at jar:file:C:/jruby-1.7.3/lib/jruby.jar!/gems/compass-0.12.2/lib/comp
ass/dependencies.rb:6
each at org/jruby/RubyArray.java:1613
(root) at c:/jruby-1.7.3/lib/ruby/shared/rubygems/custom_require.rb:1
require at org/jruby/RubyKernel.java:1027
require at c:/jruby-1.7.3/lib/ruby/shared/rubygems/custom_require.rb:36
(root) at test.rb:1
An idea of the problem and, maybe, of solution ? ;) Thanks by advance.
[UPDATE #1]
After Jörg W Mittag obvious suggestion, the error disapear. Thanks ;) Now, it just don't find the scss file, so it's a "normal problem" ;)
[UPDATE #2]
Having used compass with success in IRB, it's time to transpose the test through Java. So, I wrote some lines in Java to execute my ruby script, using only absolute path to avoid problems in a first time.
InputStream myFile = ISRessources.getFile("C:/Path/To/My/test.rb");
new ScriptingContainer().runScriptlet(myFile, "test.rb");
But ... how to "load" my compass-lib.jar ? What's the equivalent of the -r in JRuby ? I've tried to includ gems into jruby.jar, to add compass-lib.jar in externals jars in java build path, but both don't work, I still have :
LoadError: no such file to load -- compass
require at org/jruby/RubyKernel.java:1027
(root) at test.rb:1
Any idea ?
The error message says:
Unable to load Sass. Please install it with one of the following commands:
gem install sass --pre
Related
I have a basic java app using java.awt Swing UI and I want to create a snap for it so when it's installed there is a launcher available and my UI Launches. I use gradle and the jar task to create a jar which works fine.
Naturally I have in a class that when called loads my app just fine:
package com.foo
class Bar() {
static void main(String... args) { launchUI() }
}
I created a snap folder at the root of the project and a snap.yaml where i followed the instructions on https://snapcraft.io/docs/java-applications so i have a snap yaml that produces a snap file which also installs fine:
name: deepthought
base: core18
version: '0.0.7'
summary: ""
icon: gui/foo.png
description: |
Computes the ultimate answer for life the universe and everything
grade: devel # must be 'stable' to release into candidate/stable channels
confinement: devmode # use 'strict' once you have the right plugs and slots
# This doesn't work
#apps:
# htmldoc:
# command: desktop-launch $SNAP/bin/foo.sh
## desktop: share/applications/htmldoc.desktop
# plugs: [home, network, x11]
parts:
foopart:
plugin: gradle
source: https://github.com/bsautner/foo.git
source-type: git
gradle-options: [] # suppress running of tests and run the war task
gradle-output-dir: build/libs
I've spent quite some time trying to figure out:
If i create a shell script to run a java -jar foo.jar command it ends up in the /snap directory but it's not on the users path so they can't get to it
I've tried creating launchers but always get an error that my launcher can't be found, if i put it in my root folder as /bin/launch.sh snap can't find it and if i put it in the snap/bin/ folder i also get errors to not put things in the snap folder
When I do install my snap, i don't see where it puts my jar i want to execute, so i can't write a script that does that
I'd really appreciate if anyone can share a working snap.yaml for a java program with a launcher and if there is any mention of a path to something that you note where those files are in relation to the path of the /snap/snap.yaml file
ok figured it out - the docs don't say this but the files are relative to the root of the project so even though the yaml says this is the launch
apps:
cmd3:
command: usr/bin/foo.sh
foo.sh should be in the root of the project and the orginize section here moves it to the bin dir
foo:
plugin: gradle
source-type: local
source: .
build-packages:
- openjdk-11-jdk
stage-packages:
- openjdk-11-jdk
- x11-utils
organize:
${SNAPCRAFT_PART_BUILD}/jg-snap: usr/bin/foo.sh
The jar is in the /snap/foo/current/usr/jar directory
I use JNA to load a c++ library (.so) in a java project. I package my library inside the jar, and load it from the jar when instantiating the java class that uses it. I do all this like so:
mvn install compiles the c++ code and packages the outcome dynamic library inside the jar.
I call in a static context when instantiating the LibraryWrapperClass the following
System.load( temp.getAbsolutePath() );
where temp is a temporary file containing the library which was found in the jar. This code is based on the work found here adamheinrich
- I call Native.loadLibrary(LIBRARYPATH) to wrap the library into a java class.
private interface Wrapper extends Library {
Wrapper INSTANCE = Native.loadLibrary( C_LIBRARY_PATH, Wrapper.class );
Pointer Constructor();
...
}
I run tests and validate that the library was found and up and running.
I use a java web project that depends on this project. It uses tomcat and runs fine in local.
My issue is that when I deploy on the server, the LibraryWrapperClass cannot instantiate. Error on server is:
java.lang.NoClassDefFoundError: Could not initialize class pacakgeName.LibraryWrapperClass
at java.base/java.lang.Class.forName0(Native Method)
at java.base/java.lang.Class.forName(Class.java:375)
at org.hibernate.annotations.common.util.StandardClassLoaderDelegateImpl.classForName(StandardClassLoaderDelegateImpl.java:57)
at org.hibernate.boot.internal.MetadataBuilderImpl$MetadataBuildingOptionsImpl$4.classForName(MetadataBuilderImpl.java:758)
at org.hibernate.annotations.common.reflection.java.JavaReflectionManager.classForName(JavaReflectionManager.java:144)
at...
This error seems that the library is found, since there is not the UnsatisfiedLinkError exception thrown. But something else is failing. Do someone know what could happen? How could I debug?
I recall that everything works perfectly in local.
How could I debug?
1. with strace
strace will give you what files Tomcat is trying to open : strace -f -e trace=file -o log.txt bin/startup.sh
After this, look for packageName in log.txt, or other files not found with :
egrep ' open.*No such file' log.txt
2. with JConsole
Enable JMX, launch a JConsole, go to VM summary tab, and check/compare very carefully VM arguments/classpath/library path/boot class path
3. dependency listing with ldd
If a dependency issue is likely to be the problem, the ldd sharedLibraryFile.so command lists all the dependencies and allows to track which one might be missing.
I'm really new to maven and storm so I'm trying to follow the instructions in https://github.com/apache/storm/tree/master/examples/storm-starter. My current path is /home/luc/theTest/storm/examples/storm-starter. Inside the target folder there is a storm-starter-2.0.0-SNAPSHOT.jar file. I'm getting stuck when running
storm jar target/storm-starter-*.jar org.apache.storm.starter.ExclamationTopology -local
I get this error
ionTopology -local
Running: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -client -Ddaemon.name= -Dstorm.options= -Dstorm.home=/home/luc/stormTest/apache-storm-1.1.1 -Dstorm.log.dir=/home/luc/stormTest/apache-storm-1.1.1/logs -Djava.library.path=/usr/local/lib:/opt/local/lib:/usr/lib -Dstorm.conf.file= -cp /home/luc/stormTest/apache-storm-1.1.1/lib/servlet-api-2.5.jar:/home/luc/stormTest/apache-storm-1.1.1/lib/slf4j-api-1.7.21.jar:/home/luc/stormTest/apache-storm-1.1.1/lib/objenesis-2.1.jar:/home/luc/stormTest/apache-storm-1.1.1/lib/kryo-3.0.3.jar:/home/luc/stormTest/apache-storm-1.1.1/lib/log4j-core-2.8.2.jar:/home/luc/stormTest/apache-storm-1.1.1/lib/log4j-over-slf4j-1.6.6.jar:/home/luc/stormTest/apache-storm-1.1.1/lib/storm-core-1.1.1.jar:/home/luc/stormTest/apache-storm-1.1.1/lib/log4j-slf4j-impl-2.8.2.jar:/home/luc/stormTest/apache-storm-1.1.1/lib/minlog-1.3.0.jar:/home/luc/stormTest/apache-storm-1.1.1/lib/log4j-api-2.8.2.jar:/home/luc/stormTest/apache-storm-1.1.1/lib/clojure-1.7.0.jar:/home/luc/stormTest/apache-storm-1.1.1/lib/ring-cors-0.1.5.jar:/home/luc/stormTest/apache-storm-1.1.1/lib/asm-5.0.3.jar:/home/luc/stormTest/apache-storm-1.1.1/lib/reflectasm-1.10.1.jar:/home/luc/stormTest/apache-storm-1.1.1/lib/disruptor-3.3.2.jar:/home/luc/stormTest/apache-storm-1.1.1/lib/storm-rename-hack-1.1.1.jar:target/storm-starter-2.0.0-SNAPSHOT.jar:/home/luc/stormTest/apache-storm-1.1.1/conf:/home/luc/stormTest/apache-storm-1.1.1/bin -Dstorm.jar=target/storm-starter-2.0.0-SNAPSHOT.jar -Dstorm.dependency.jars= -Dstorm.dependency.artifacts={} org.apache.storm.starter.ExclamationTopology -local
Error: Could not find or load main class org.apache.storm.starter.ExclamationTopology
Am I doing something wrong? I'm also a bit confused on whether I have to run the nimbus and supervisor first. I tried with and without them and neither worked anyways. Been searching the web but nothing works. Not sure what else to try.
This is usually caused by inconsistent versions of storm-client and storm-starter. Try following these steps to get the example working.
download the latest release from http://storm.apache.org/downloads.html
in this example, we will use version 1.1.1
extract this to a folder, lets call it ${STORM_HOME}
cd into ${STORM_HOME}/examples/storm-starter
execute mvn package -DskipTests=true
this should build the storm-starter jar in target folder
${STORM_HOME}/examples/storm-starter/target/storm-starter-1.1.1.jar
run the example from ${STORM_HOME} directory:
./bin/storm jar examples/storm-starter/target/storm-starter-1.1.1.jar org.apache.storm.starter.ExclamationTopology
don't add the -local flag since it seems like the ExclamationTopology is only deployed in a LocalCluster if no args are passed. You can check the source code here: ${STORM_HOME}/examples/storm-starter/src/jvm/org/apache/storm/starter/ExclamationTopology.java
I'm trying to embed jruby in a weblogic app to run sass/compass with no luck ;-(
This is what've done so far:
Install sass/compass GEMS:
java -jar jruby-complete-1.7.10.jar -S gem install -i . compass --no-rdoc --no-ri
Create a jar that contains all the gems
jar uf jruby-complete-1.7.10.jar -C sass-compass .
Check that the new jruby-complete-1.7.10.jar contains all the gems:
java -jar jruby-complete-1.7.10.jar -S gem list
*** LOCAL GEMS ***
bouncy-castle-java (1.5.0147)
chunky_png (1.2.9)
compass (0.12.2)
fssm (0.2.10)
jruby-openssl (0.9.3)
json (1.8.0 java)
krypt (0.0.1)
krypt-core (0.0.1 universal-java)
krypt-provider-jdk (0.0.1)
rake (10.1.0)
rdoc (4.0.1)
sass (3.2.14)
So far, so good, I verify that my new uber jruby-complete-1.7.10.jar contains sass and compass gems
Enters weblogic (Weblogic 11 - Oracle 10.3.6)
I create a WebApp with a servlet that uses JRuby to compile sass/compass css and put it inside an EAR
Deploy the ear so the structure is like:
MyEAR
|-APP-INF
| |-classes
| |-lib
| |-jruby-complete-1.7.10.jar <- my jruby jar that contains sass/compass gems
|-META-INF
|-MyWAR
|-META-INF
|-WEB-INF
|-classes
| |-MyServlet.class <- the servlet that compiles sass
|-lib
|-web.xml
When I call the servlet to compile some sass/compass css, I get the following error:
LoadError: no such file to load -- sass/plugin
require at org/jruby/RubyKernel.java:1083
require at classpath:/META-INF/jruby.home/lib/ruby/shared/rubygems/core_ext/kernel_require.rb:55
(root) at :2
In order to compile my sass/compass styles I've to run the following ruby script:
require 'rubygems'
require 'sass/plugin'
require 'sass/engine'
source = '...the scss code....'
engine = Sass::Engine.new(source,{ :syntax => :scss, :compass => {:css_dir => '/styles',:js_dir => '/scripts',images_dir => '/images'} })
result = engine.render
So in my servlet I use jruby like:
ScriptingContainer rubyEngine = new ScriptingContainer(LocalContextScope.CONCURRENT);
String rubyScript = ...
final StringWriter rawScript = new StringWriter();
rawScript.append(rubyScript);
rubyScript.flush();
String compiledCSS = rubyEngine.runScriptlet(theScript)
.toString();
** NO LUCK ** I got the LoadError: no such file to load -- sass/plugin
So I tried to set the LOAD_PATH like:
List<String> paths = new ArrayList<String>();
paths.add("classpath:/gems/sass-3.2.14/lib");
rubyEngine .setLoadPaths(paths);
** NO LUCK EITHER **
¿any idea?
Thanks in advance
The solution as Tom's clue said was putting sass/compass gems path at the LOAD_PATH.
So the script to make sass/compass run under weblogic 10.3.6 was:
sassGemDir = 'D:/compass-gems/gems/sass-3.2.13/lib'
compassGemDir = 'D:/compass-gems/gems/compass-0.12.2/lib'
chunkyPngGemDir = 'D:/compass-gems/gems/chunky_png-1.2.9/lib'
fssmGemDir = 'D:/compass-gems/gems/fssm-0.2.10/lib'
$LOAD_PATH.insert(0,sassGemDir,remoteSassGemDir,compassGemDir,chunkyPngGemDir,fssmGemDir)
require 'rubygems'
require 'sass/plugin'
require 'sass/engine'
source = '...the scss code....'
engine = Sass::Engine.new(source,{ :syntax => :scss,:compass => {:css_dir => '/styles',:js_dir => '/scripts',images_dir => '/images'} })
result = engine.render
NOTE:
Finally I didn't managed to make jruby load sass/compass from a JAR so there's NO need to create an uber-jar that contains jruby-complete and sass/compass (step 2 in my question)
The only change in the ruby-script to run sass/compass from a JAR is:
sassGemDir = 'classpath:/gems/sass-3.2.13/lib'
compassGemDir = 'classpath/compass-0.12.2/lib'
chunkyPngGemDir = 'classpath/gems/chunky_png-1.2.9/lib'
fssmGemDir = 'classpath/gems/fssm-0.2.10/lib'
BUT when I run sass/compass loading from the uber-jar I got two errors:
compass's sprite-importer.rb failed to load sprite_importer.erb file since it was loaded like:
TEMPLATE_FOLDER = File.join(File.expand_path('../', __FILE__), 'sprite_importer')
so I changed sprite-importer.rb to:
TEMPLATE_FOLDER = File.join( File.expand_path(File.join(File.dirname(__FILE__))),'sprite_importer')
and this problem went away
compass's frameworks.rb failed to load the frameworks dir: jruby cannot load a dir's contents when the dir is inside a JAR (I susspect it's an error with java 6 or jrockit, which is the JDK I use in weblogic 10.3.6)
I could not find a solution for this problem so I switched to load sass/compass to be loaded directly from the filesystem and NOT from a JAR file
FINAL NOTE
All the problems with the GEMs LOAD_PATH and compass being loaded from within a JAR were NOT an issue when running inside TOMCAT under Java 7
Hope this helps someone who's trying to run sass/compass using an embeded jruby
I'm having some problems at runtime with some of my generated protocol buffer classes.
My project layout is as follows:
module/
protobuf-api/
proto/
com/foo/api/Service.proto
com/foo/shared/Shared.proto
org/bar/api/Message1.proto
org/bar/api/Message2.proto
The Service.proto file depends on Shared.proto and some of the Message*.proto files. From the protobuf-api directory, I run the following command to compile:
find . -name *.proto -exec protoc --java_out=java -I=proto {} \;
When I attempt to run my Service, I get the following exception:
java.lang.ExceptionInInitializerError
at com.linkedin.history.api.protobuf.HistoryServiceProtos$HistoryServiceQuery.(HistoryServiceProtos.java:544)
at com.linkedin.history.api.serializer.HistoryServiceSerializer.serialize(HistoryServiceSerializer.java:47)
at test.history.serializer.TestSerializer.testHistoryServiceQuery(TestSerializer.java:38)
at test.fwk.util.core.BaseTestSuiteCore.run(BaseTestSuiteCore.java:304)
at test.fwk.util.core.BaseTestSuiteConf.run(BaseTestSuiteConf.java:186)
at test.fwk.lispring.BaseTestSuite.run(BaseTestSuite.java:232)
at test.fwk.lispring.BaseTestSuite.callAppropriateRun(BaseTestSuite.java:265)
at test.fwk.util.core.BaseTestSuiteCore.run(BaseTestSuiteCore.java:199)
Caused by: java.lang.IllegalArgumentException: Invalid embedded descriptor for "com/linkedin/history/api/protobuf/HistoryService.proto".
at com.google.protobuf.Descriptors$FileDescriptor.internalBuildGeneratedFileFrom(Descriptors.java:268)
at com.linkedin.history.api.protobuf.HistoryServiceProtos.(HistoryServiceProtos.java:1794)
Caused by: com.google.protobuf.Descriptors$DescriptorValidationException: com/linkedin/history/api/protobuf/HistoryService.proto: Dependencies passed to FileDescriptor.buildFrom() don't match those listed in the FileDescriptorProto.
at com.google.protobuf.Descriptors$FileDescriptor.buildFrom(Descriptors.java:221)
at com.google.protobuf.Descriptors$FileDescriptor.internalBuildGeneratedFileFrom(Descriptors.java:266)
I've read the post here but I think I'm doing everything correctly. Any suggestions on why I'm having the initializer errors? I'm compiling everything with the same -I flag.
I suspect that the problem is that when you're finding the proto file, you've given it the full path, e.g. proto/com/foo/api/Service.proto but when it refers to it via the include directory, it's using com/foo/api/Service.proto
Simple fix - run this from the proto directory:
find . -name *.proto -exec protoc --java_out=../java -I=. {} \;
I must admit I can't remember a lot of the details of protoc (which I really should) but I suspect that will work.
Another alternative which may work:
protoc --java_out=java `find . -name '*.proto'`
i.e. pass all the proto files into a single call to protoc.
I had the same error type in C# and here was my problem: I called the protoc in a pre-build step in my project. There I used Visual Studio built-in macros like $(SolutionDir) and $(ProjectDir) to retrieve necessary paths. Since I referenced *.proto files from other projects, I used two --proto_path options: one for the root path (to resolve import paths) and one for the file itself. My solution file was inside a subdirectory of the root directory, so I used the relative path .. to get to the root. Proto files are always in subdirectory gen of the particular project. All in all, the command was like this:
protoc.exe --proto_path=$(SolutionDir).. --proto_path=$(ProjectDir)gen $(ProjectDir)gen\DemoFile.proto
It compiled fine, but I got the System.TypeInitializationException at runtime on calling CreateBuilder() method. The problem was that both paths $(SolutionDir).. and $(ProjectDir) (though effectively pointing to the same directory) had different textual representation due to the relative path component ... I solved the problem by consistently using the same path like this:
protoc.exe --proto_path=$(SolutionDir).. $(SolutionDir)..\My\Demo\Project\Directory\gen\DemoFile.proto
It cost me almost 3 days to narrow down and recognize the problem, so I share my solution here in hope that it will save some time for someone.