I'm currently following the Vespa tutorials, and ran into an issue with the HTTP API use-case. Everything works fine from the mvn install package to the vespa-deploy prepare target/application.zip.
The call to vespa-deploy activate returns normally, but the application then never gets available on localhost:8080. Looking at /opt/vespa/logs/vespa/vespa.log (in the VM) one finds the following stack trace:
Container.com.yahoo.jdisc.core.StandaloneMain error Unexpected:
exception=
java.lang.IllegalArgumentException: Could not create a component with id 'com.mydomain.demo.DemoComponent'.
Tried to load class directly, since no bundle was found for spec: sample-app-http-api-searcher.
If a bundle with the same name is installed, there is a either a version mismatch or the installed bundle's version contains a qualifier string.
at com.yahoo.osgi.OsgiImpl.resolveFromClassPath(OsgiImpl.java:48)
...
This occurred using a fresh Docker image with a clean clone of the sample-apps git repository. Preparing and activating the basic sample as well as the other http example did work seamlessly.
I checked the sources and the xml files for obvious problems but don't have any clue about what is failing and where.
target/application.zip contains
application/components/http-api-using-searcher-1.0.1-deploy.jar
application/hosts.xml
application/searchdefinitions/basic.sd
application/services.xml
And the jar itself does contain a com/mydomain/demo/DemoComponent.class file (among other things).
Potentially related issue on the github tracker: https://github.com/vespa-engine/vespa/issues/3479 I'll be posting a link to this question there as well, but I still think it's worth a SO question, at least to get some action behind the vespa tag :)
The bundle id in the application's services.xml file was wrong. Please pull the application from git and try again now. See also PR: https://github.com/vespa-engine/sample-apps/pull/18
Brief explanation: The bundle id given in the bundle="<id>" declaration in services.xml must match the 'Bundle-SymbolicName' in the bundle's manifest. When the bundle has been built with the Vespa bundle-plugin, the symbolic name is by default the same as the project's artifactId. Hence, in most cases you just have to verify that the bundle id matches the artifactId.
Related
I use exq and exq_ui for background job processing and monitoring in my Phoenix application.
At first, I refer to exq_ui in mix.exs's deps like this:
{:exq_ui, "~> 0.11.0", only: [:dev, :qa, :stg, :prod]}
And it works fine.
But then I discover 2 bugs in the UI:
When I click on the tab Busy, it blows up on the server side, and shows nothing in the tab Busy in UI.
In the tab Scheduled, when a job is passed args as a list of map, it is showed as [Object object] in the column Args, instead of the real content of the args.
I fix those bugs here in this PR to the main official repo:
https://github.com/akira/exq_ui/pull/89/files
But I cannot expect it will be merged anytime soon, so I change my dependency in mix.exs like this:
{:exq_ui, "~> 0.11.0",
git: "https://github.com/chauhonglinh/exq_ui.git",
branch: "feature/fix_busy_tab_in_exq_ui",
only: [:dev, :qa, :stg, :prod]}
Now the trouble happens.
The mix deps.get, mix deps.compile and iex -S mix phx.server all run successfully.
But then when I browse to http://localhost:4040, the UI doesn't show up, and in the javascript console, there are errors:
Resource interpreted as Stylesheet but transferred with MIME type text/html: "http://localhost:4040/assets/vendor.css".
exq_ui:20
Resource interpreted as Stylesheet but transferred with MIME type text/html: "http://localhost:4040/assets/exqui.css".
vendor.js:1 Uncaught SyntaxError: Unexpected token <
exqui.js:1 Uncaught SyntaxError: Unexpected token <
Question: Why did this error not happen with ordinary deps config, but it happened with deps config referred to a git repo?
How can I fix it?
I think React and Angular also have similar errors in certain situations, but it seems that nobody has a good fix for them, just some anecdotes here and there.
I figured out what the problem was. But I don't see any good solution for it yet if my PR is not merged (short of copying the whole exq_ui package and create a new one)
Here is the problem.
Referring to package like this points to binary distribution on hex.pm, hence it has all the emberjs and js modules prepackaged and babelified correctly:
{:exq_ui, "~> 0.11.0", only: [:dev, :qa, :stg, :prod]}
However, the referring to package in github points to source from github, so it has only source:
{:exq_ui, "~> 0.11.0",
git: "https://github.com/chauhonglinh/exq_ui.git",
branch: "feature/fix_busy_tab_in_exq_ui",
only: [:dev, :qa, :stg, :prod]}
Solution for dev environment:
In order for it to work in dev environment, from within my Phoenix repo, I need to run the following commands:
cd deps/exq_ui/priv/ember
npm install
bower install
node_modules/ember-cli/bin/ember build --environment=production
Then the web UI at http://localhost:4040 will work properly.
Remaining Question: When I refer to exq_ui from a git repo, I still don't see how I can make a binary distributed version for exq_ui when I want to release my Phoenix app.
There seems to be countless reports of this bug in Stack Overflow. None of the suggestions worked. In my case it is almost identical to this stack overflow report
SPRING
except this case is in Android being built in Android Studio. It only happens in release mode with proguard. Proguard corrupts it somehow. And yes I have done the following in proguard:
-keep class org.eclipse.paho.client.mqttv3.logging.JSR47Logger { *; }
-keep class org.eclipse.paho.** { *; }
I have also parsed the jars downloaded by gradle. I cannot update to 1.2.1 because that only works with the latest versions of Android ... according to comments made by the developers. If I could get the source code for 1.1.0 maybe I could stop it from calling a resource that does not exist.
Anyone solve this problem or is it a bug in proguard/paho?
Looking at the apks generated by release builds (uses proguard) and debug builds (no proguard) shows that proguard is taking the org.eclipse.... package name of the properties and changing the 'org' to some letter like 'c'. The mqtt paho client is looking for the property file using the full package name and therefore cannot find it, no matter what you include or exclude in proguard. I looked at an apk made a few months ago (I have not done anything with the paho client or that part of the code using the paho client ... it has worked fine and I have had no need to change it). I see in that old release apk that the 'org' is there as it should be.
So the problem is in proguard. All I could do to move forward is take the source files for 1.1.0, create a new java project module, and tediously comment out every 'log' and getLogger in the source code. Its a temporary and unpleasant fix but it works. When proguard (R8) fixes this, then I can go back to what I had.
So I guess the only real fix is to submit a bug to R8. That I have not done.
I created a Karaf Instance on a Service Mix(7.0.1) and deployed my bundles into it.
The camel route is starting up properly, but always fails when it should send an email.
With the following exception:
javax.activation.UnsupportedDataTypeException: no object DCH for MIME type multipart/mixed;
I tried several solutions i found from different sources around the web, but cannot actually fix it.
I tried commenting javax.activation out in the jre.properties file of the instance, as well as using a bundle that contains java mail and the osgi friendly version of the activation bundle in the same feature.
Could openJDK be an issue here?
Note: Everything works perfectly fine on a windows/oraclejdk environment, the exception only occurs in a linux/openjdk environment.
My issue stemed from a class loader problem after all and i fixed it by bundling javax.mail/mail/1.4.7 and org.apache.servicemix.specs.activation-api-1.1/2.8.0 in the same bundle.
I also needed to remove every occurence of javax.activation from the jre.properties and config.properties file of the child instance.
I am not sure why it ran per default on a different environment, as in theory the same classloader problems should have occured too, but that might be connected to different JREs being in use.
Using Cmd 3.0.0.141, I have successfully generated a workspace and an Ext app in that workspace. The application builds correctly until I attempt to integrate the Bryntum Scheduler, where I encounter an error when I try to build:
"Failed to resolve dependency Sch.panel.SchedulerTree for file ExtCalendar.view.Tree"
the app is very simple at this point, uses Ext.application and follows the MVC pattern where I have a view defined "ExtCalendar.view.Tree" that extends 'Sch.panel.SchedulerTree". I also have models and stores that extend Bryntum classes as well, so I assume the compiler will trip over those as well, since it can't see the Sch namespace.
I've added a 'js' path to my app.json that points to the bryntum js file where 'Sch.panel.SchedulerTree' comes from. I've tried to run the 'refresh' command with the same results (Failed to resolve...). I've regenerated the bootstrap.js file manually using 'compile', but nothing from the Sch namespace ever gets added to it, despite the Brytum lib file being in the classpath.
What do I need to do in order to successfully run the 'build' command with libs like this?
Or, do I need to take a more granular approach using the 'compile' command?
With the help of the nice folks on the Sencha forums, I was able to resolve my build issues. The solution, for me, involved a shim. I added an external shim.js file to my index with as many //#require and //#define directives as needed in order to resolve the dependency issues.
According to the nice folks at Bryntum, once I upgrade from the free-trial version of the Bryntum Scheduler, I will be able to get rid of the shim and simply rely on the sencha.cfg classpath pointing at the Bryntum src.
Also, as an aside, the app.json file is not used in ExtJS apps, its inclusion in the generated files was a bug in build 141 of Cmd v3.
See this thread for more detail.
I'm trying to use jTwitter to get an oauth instance to twitter with my consumer key/secret and access token/secret. This is well documented in the javadoc here. I have downloaded signpost, signpost-jetty, and the jtwitter library, but after deploying and running the servlet, I get a error java.lang.NoClassDefFoundError: winterwell/jtwitter/OAuthSignpostClient Eclipse isn't complaining about the class not being there, because it is there-- I can see it in the JAR file itself, which is in my project. So, I said forget it, I'll try out OAuthScribeClient instead, but this generated a VERY SIMILAR ERROR java.lang.NoClassDefFoundError: org/scribe/oauth/Token This one confuses me even further because I have the following code in my java file, and it compiles without error or warning:
import org.scribe.oauth.Token;
Token token = new Token("myaccesstokeninfo", "accesstokensecret");
Clearly, I'm missing something very fundamental, but I am at an absolute loss as to what it may be. Thanks.
Usually "NoClassDefFoundError" happens when you forget to copy all jar-files to your "/war/WEB-INF/lib" directory, so those libs will be unavailable from server-side.
Xo4yHaMope is probably right.
If you're working from Eclipse but running using a web container, then your runtime classpath might be different from your project classpath - which can cause this error.
In order to complete Ben Winters answer what I actually did and worked is add the jar in
the libs folder within the project
see also here about folder hierarchy.
When you do this eclipse will normally add the jar to the android dependencies before launching the application. What I realise is that adding a jar in the build path will make classes available only during the build