openstack4j 2.0.0-SNAPSHOT compatible with java 1.6?? #134

vinodborole · 2014-11-20T14:07:51Z

I am using openstack4j 2.0.0-Snapshot with java 1.6 and a basic authentication code is throwing me below jersey error

Exception in thread "main" com.google.common.util.concurrent.ExecutionError: java.lang.UnsupportedClassVersionError: org/glassfish/jersey/jackson/JacksonFeature : Unsupported major.minor version 51.0
at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2199)
at com.google.common.cache.LocalCache.get(LocalCache.java:3934)
at com.google.common.cache.LocalCache.getOrLoad(LocalCache.java:3938)
at com.google.common.cache.LocalCache$LocalLoadingCache.get(LocalCache.java:4821)
at org.openstack4j.connectors.jersey2.ClientFactory.create(ClientFactory.java:50)
at org.openstack4j.connectors.jersey2.HttpCommand.initialize(HttpCommand.java:50)
at org.openstack4j.connectors.jersey2.HttpCommand.create(HttpCommand.java:45)
at org.openstack4j.connectors.jersey2.HttpExecutorServiceImpl.invoke(HttpExecutorServiceImpl.java:53)
at org.openstack4j.connectors.jersey2.HttpExecutorServiceImpl.execute(HttpExecutorServiceImpl.java:33)
at org.openstack4j.core.transport.internal.HttpExecutor.execute(HttpExecutor.java:51)
at org.openstack4j.openstack.internal.OSAuthenticator.authenticateV2(OSAuthenticator.java:77)
at org.openstack4j.openstack.internal.OSAuthenticator.invoke(OSAuthenticator.java:41)
at org.openstack4j.openstack.client.OSClientBuilder$ClientV2.authenticate(OSClientBuilder.java:84)
at org.openstack4j.openstack.client.OSClientBuilder$ClientV2.authenticate(OSClientBuilder.java:65)
at com.osp4j.Osp4jApp.main(Osp4jApp.java:33)
Caused by: java.lang.UnsupportedClassVersionError: org/glassfish/jersey/jackson/JacksonFeature : Unsupported major.minor version 51.0
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
at org.openstack4j.connectors.jersey2.ClientFactory.buildClientFromConfig(ClientFactory.java:57)
at org.openstack4j.connectors.jersey2.ClientFactory.access$100(ClientFactory.java:31)
at org.openstack4j.connectors.jersey2.ClientFactory$1.load(ClientFactory.java:39)
at org.openstack4j.connectors.jersey2.ClientFactory$1.load(ClientFactory.java:36)
at com.google.common.cache.LocalCache$LoadingValueReference.loadFuture(LocalCache.java:3524)
at com.google.common.cache.LocalCache$Segment.loadSync(LocalCache.java:2317)
at com.google.common.cache.LocalCache$Segment.lockedGetOrLoad(LocalCache.java:2280)
at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2195)
... 14 more

Pom.xml

org.pacesys openstack4j 2.0.0-SNAPSHOT

Code:
final OSClient os = OSFactory.builder().endpoint(serverUrl).credentials(username, credential).tenantName(tenant).authenticate();

gondor · 2014-11-20T19:37:32Z

I just confirmed that Jersey 2 (2.7+) is no longer compiling with JDK 6 as the target and that JDK 7 is required.

Couple questions:

Is it possible to use a different connector such as OkHttp, HttpClient, etc?
Is it possible to use JDK 7?

If no to the above I could look into adding a connector for a pre Jersey 2.7 version for JDK6 usage.

vinodborole · 2014-11-21T07:53:51Z

JDK 7 is no longer an option for us now, and we need to use Jersey and no longer a different connector. It will be helpful if you can add Jersey with JDK6 usage

I did try okHttp and it also requires JDK 7 and when i use HTTPClient connector with openstack4j-core-2.0.0-SNAPSHOT I get below exception for image upload code

    final Payload<File> payload = Payloads.create(new File(imagePath + "/" + imageName));
    final Image image = Builders.image().name(imageName).containerFormat(ContainerFormat.BARE).diskFormat(DiskFormat.RAW).build();
    os.images().create(image, payload);



     Exception in thread "main" ConnectionException{message=No serializer found for class java.io.FileDescriptor and no properties discovered to create BeanSerializer (to avoid exception, disable SerializationFeature.FAIL_ON_EMPTY_BEANS) ) (through reference chain: java.io.FileInputStream["fd"]), status=0}
    at org.openstack4j.connectors.httpclient.HttpExecutorServiceImpl.invoke(HttpExecutorServiceImpl.java:55)
    at org.openstack4j.connectors.httpclient.HttpExecutorServiceImpl.execute(HttpExecutorServiceImpl.java:29)
    at org.openstack4j.core.transport.internal.HttpExecutor.execute(HttpExecutor.java:51)
    at org.openstack4j.openstack.internal.BaseOpenStackService$Invocation.execute(BaseOpenStackService.java:159)
    at org.openstack4j.openstack.internal.BaseOpenStackService$Invocation.execute(BaseOpenStackService.java:154)
    at org.openstack4j.openstack.image.internal.ImageServiceImpl.create(ImageServiceImpl.java:107)
    at com.osp4j.Osp4jApp.main(Osp4jApp.java:70)
    Caused by: com.fasterxml.jackson.databind.JsonMappingException: No serializer found for class java.io.FileDescriptor and no properties discovered to create BeanSerializer (to avoid exception, disable SerializationFeature.FAIL_ON_EMPTY_BEANS) ) (through reference chain: java.io.FileInputStream["fd"])
    at com.fasterxml.jackson.databind.ser.impl.UnknownSerializer.failForEmpty(UnknownSerializer.java:59)
    at com.fasterxml.jackson.databind.ser.impl.UnknownSerializer.serialize(UnknownSerializer.java:26)
    at com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:505)
    at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:639)
    at com.fasterxml.jackson.databind.ser.BeanSerializer.serialize(BeanSerializer.java:152)
    at com.fasterxml.jackson.databind.ser.DefaultSerializerProvider.serializeValue(DefaultSerializerProvider.java:114)
    at com.fasterxml.jackson.databind.ObjectWriter._configAndWriteValue(ObjectWriter.java:800)
    at com.fasterxml.jackson.databind.ObjectWriter.writeValueAsString(ObjectWriter.java:676)
    at org.openstack4j.connectors.httpclient.HttpCommand.execute(HttpCommand.java:122)
    at org.openstack4j.connectors.httpclient.HttpExecutorServiceImpl.invokeRequest(HttpExecutorServiceImpl.java:60)
    at org.openstack4j.connectors.httpclient.HttpExecutorServiceImpl.invoke(HttpExecutorServiceImpl.java:53)
    ... 6 more

…ows for JDK6 usage

gondor · 2014-11-21T20:08:38Z

Ok I have added a JDK6 connector option which is using Jersey 2.6 (this should be 1.6 safe). You will need to modify your pom as far as openstack4j usage goes with the following:

<dependency>
  <groupId>org.pacesys</groupId>
  <artifactId>openstack4j-core</artifactId>
  <version>2.0.0-SNAPSHOT</version>
</dependency>
<dependency>
  <groupId>org.pacesys.openstack4j.connectors</groupId>
  <artifactId>openstack4j-jersey2-jdk16</artifactId>
  <version>2.0.0-SNAPSHOT</version>
</dependency>

Let me know how this works out.

vinodborole · 2014-11-24T05:49:57Z

Thanks a lot gondor; it works!

Any idea why HttpClient did not work? Any idea of the exception in my previous reply?

gondor · 2014-11-24T05:58:42Z

@vinodborole Thanks for the input. Actually you just found a bug with httpclient. 2.0.0-SNAPSHOT introduced options known as connectors (prior was only Jersey). The other connectors are still in beta and you just found a bug :) Thanks, I'll debug further and fix it. Regardless Jersey 2 is the most stable since it's been the default since I first started OpenStack4j and I had no issues adding a backwards compat JDK6 option for you. I'll fix the httpclient bug this evening.

…nector

vinodborole · 2014-11-24T08:16:03Z

ok thanks

vinodborole · 2014-11-27T15:00:25Z

@gondor

The HttpClient connector issue is fixed? If yes, how should i pull the latest connector jar, can you help?

gondor · 2014-11-28T07:29:50Z

If your using maven to run your project you can do a mvn -U compile via command line. If your in Eclipse use Maven -> Update Project (from there make sure Force Dependencies is checked)

vinodborole · 2014-11-28T09:03:13Z

@gondor
with httpclient connector, well now it gets a OutOfMemory Exception even with -Xms2048m -Xmx4096m value

   Exception in thread "main" java.lang.OutOfMemoryError: Java heap space
    at java.util.Arrays.copyOf(Arrays.java:2786)
    at java.io.ByteArrayOutputStream.write(ByteArrayOutputStream.java:94)
    at com.google.common.io.ByteStreams.copy(ByteStreams.java:179)
    at com.google.common.io.ByteStreams.toByteArray(ByteStreams.java:220)
    at org.openstack4j.connectors.httpclient.HttpCommand.execute(HttpCommand.java:131)
    at org.openstack4j.connectors.httpclient.HttpExecutorServiceImpl.invokeRequest(HttpExecutorServiceImpl.java:60)
    at org.openstack4j.connectors.httpclient.HttpExecutorServiceImpl.invoke(HttpExecutorServiceImpl.java:53)
    at org.openstack4j.connectors.httpclient.HttpExecutorServiceImpl.execute(HttpExecutorServiceImpl.java:29)
    at org.openstack4j.core.transport.internal.HttpExecutor.execute(HttpExecutor.java:51)
    at org.openstack4j.openstack.internal.BaseOpenStackService$Invocation.execute(BaseOpenStackService.java:159)
    at org.openstack4j.openstack.internal.BaseOpenStackService$Invocation.execute(BaseOpenStackService.java:154)
    at org.openstack4j.openstack.image.internal.ImageServiceImpl.create(ImageServiceImpl.java:107)
    at com.openstack4j.app.Osp4jApp.main(Osp4jApp.java:70)

…ed using only 64mb memory in the JDK and a 400mb image upload

gondor · 2014-11-28T20:00:09Z

Ok, this is now fixed. Tested by configuring my JDK to 64mb memory and uploading a 400mb image. (previous tests failed, now passed). You'll need to update your dependency in Maven or sync the new code

vinodborole · 2014-12-01T10:09:16Z

It works thanks a lot

mnkanojia · 2015-05-05T20:19:36Z

I recently started working on writing a Openstack client and getting the same error that vinodborole mentioned above.
Our application is on JDK1.6 and Jersey 2.0. I am using openstack4j 2.0.1 and as mentioned by gondor, I have openstack4j-jersey2-jdk16-2.0.1 in the classpath as well.

Can someone please tell me how to get rid of this exception:

Exception in thread "main" com.google.common.util.concurrent.ExecutionError: java.lang.UnsupportedClassVersionError: org/glassfish/jersey/jackson/JacksonFeature : Unsupported major.minor version 51.0
at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2261)
at com.google.common.cache.LocalCache.get(LocalCache.java:4000)
at com.google.common.cache.LocalCache.getOrLoad(LocalCache.java:4004)
at com.google.common.cache.LocalCache$LocalLoadingCache.get(LocalCache.java:4874)
at org.openstack4j.connectors.jersey2.ClientFactory.create(ClientFactory.java:50)
at org.openstack4j.connectors.jersey2.HttpCommand.initialize(HttpCommand.java:50)
at org.openstack4j.connectors.jersey2.HttpCommand.create(HttpCommand.java:45)
at org.openstack4j.connectors.jersey2.HttpExecutorServiceImpl.invoke(HttpExecutorServiceImpl.java:53)
at org.openstack4j.connectors.jersey2.HttpExecutorServiceImpl.execute(HttpExecutorServiceImpl.java:33)
at org.openstack4j.core.transport.internal.HttpExecutor.execute(HttpExecutor.java:51)
at org.openstack4j.openstack.internal.OSAuthenticator.authenticateV2(OSAuthenticator.java:77)
at org.openstack4j.openstack.internal.OSAuthenticator.invoke(OSAuthenticator.java:41)
at org.openstack4j.openstack.client.OSClientBuilder$ClientV2.authenticate(OSClientBuilder.java:84)
at org.openstack4j.openstack.client.OSClientBuilder$ClientV2.authenticate(OSClientBuilder.java:65)
at com.gmrt.sunrise.genesis.data.utils.OpenStackClient.auth(OpenStackClient.java:91)

gondor added a commit that referenced this issue Nov 21, 2014

Issue #134 - Added new connector for Jersey 2 bound to v2.6 which all…

d7fad9c

…ows for JDK6 usage

gondor added the enhancement label Nov 21, 2014

gondor added this to the 2.0.0 Release milestone Nov 21, 2014

gondor self-assigned this Nov 21, 2014

gondor added the Pending Verification label Nov 21, 2014

gondor added a commit that referenced this issue Nov 24, 2014

Issue #134 - Stream upload error found when evaluating HttpClient con…

4aefc8c

…nector

gondor closed this as completed Nov 24, 2014

gondor removed the Pending Verification label Nov 24, 2014

gondor added a commit that referenced this issue Nov 28, 2014

Issue #134 - fixed OOM by letting HttpClient handle the streams. Test…

5682f7f

…ed using only 64mb memory in the JDK and a 400mb image upload

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openstack4j 2.0.0-SNAPSHOT compatible with java 1.6?? #134

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openstack4j 2.0.0-SNAPSHOT compatible with java 1.6?? #134

openstack4j 2.0.0-SNAPSHOT compatible with java 1.6?? #134

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