Tuesday Apr 14, 2015

Scheduling Processes on Oracle JavaCloud Service SaaS Extensions (JCSSX)

In the past if we wanted to schedule some background processing in JCSSX we had to get help from the database's scheduler.. Using a clever feature of SchemaDB, that is the ability to call a REST Service from a PLSQL procedure, which in turn would execute our code on JCSSX we were able to effectively execute code on JCSSX at determined intervals/times etc. All this is now unnecessary! With the current version of JCSSX we now fully support a list of 3rd party frameworks (see link for a list) and Quartz is one of them. Jani, colleague from the Fusion Developer Relations team, has written up a really nice blog posting on the FADevrel blog summarising what you can do with Quartz and some code to get you started..You could say "Quartz in 10mins" blog! Check it out

Monday Mar 30, 2015

Getting inaccessible URL when executing REST calls within JCSSX????

Recently I was coding up a REST client for use with Oracle Documents Cloud, using Jersey REST client, and it needed to be deployed to Oracle Java Cloud SX (aka JCSSX). The client code worked perfectly on a local Weblogic 11g but when deployed to the JCSSX instance it would give the following error :

java.lang.RuntimeException: java.security.AccessControlException: access denied ("java.net.SocketPermission" "partners-pts.documents.us2.somecloud.com:443", "connect,resolve")

Initially I was convinced that this was some sort of networking issue in JCSSX, I.e. it couldn't connect to the documents cloud server via the network.. I even tried manually setting the proxy in the Java Code all to no avail..

After quite a while looking I discovered the problem...

This is the detailed error message I got :

Caused by: java.security.AccessControlException: access denied ("java.net.SocketPermission" "partners-pts.documents.us2.somecloud.com:443" "connect,resolve")
at java.security.AccessControlContext.checkPermission(AccessControlContext.java:372)
at java.security.AccessController.checkPermission(AccessController.java:559)
at java.lang.SecurityManager.checkPermission(SecurityManager.java:549)
at java.lang.SecurityManager.checkConnect(SecurityManager.java:1051)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:510)
at sun.net.www.protocol.https.HttpsClient.<init>(HttpsClient.java:275)

at sun.net.www.protocol.https.HttpsClient.New(HttpsClient.java:371)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(AbstractDelegateHttpsURLConnection.java:191)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:932)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:177)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1300)
at java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:468)
... 81 more


The bold bits hint at the issue.. For some reason my code was using the Sun HTTP Handler which isn't supported on the JCSSX stack but I hadnt configured it to use the Sun Http Handler...You can get your code to use the Sun Http Handler by either setting the system property "UseSunHttpHandler=true" in code or by using Oracle Cloud SDK to set it as a system property.

To check if you have the UseSunHttpHandler set, issue the following command (changing your JCSSX details)

 javacloud list-system-properties -user <username> -p <password> -id <identityDomain>-si  <serverInstance> -httpproxy <httpProxy:port> -datacenter <dataCenterName>

If you have the UseSunHttpHander set to true, or even present, then remove it! Someone had set it in my instance but none of my team members would admit to it.....

 javacloud delete-system-property -user <username> -p <password> -id <identityDomain>-si  <serverInstance> -httpproxy <httpProxy:port> -datacenter <dataCenterName> -name UseSunHttpHandler

Restart your instance and all should then be well.

We've logged an enhancement request to get JCSSX to ignore this specific system property but just incase you hit it before the ER hits the JCSSX servers.



PTS Sample code now available on GitHub

Not sure many people know about this, but sometime ago my team created a whole collection of sample code. This code is available on OTN at this location  but it is now also available in github here!

 We'll be updating this repository with some new code soon, when we do I'll make sure to update this blog entry

Thursday Feb 19, 2015

What has Angelo been doing? Whats this marketplace all about?

About two years ago my role changed from focusing on Fusion Middleware enablement to SaaS Integration enablement. Simply put my team started looking at how to get partners integrated with our SaaS applications (SalesCloud - CRM, HCM, ERP ) using PaaS where needed and more recently also looking at the pure PaaS enablement model.

The market is growing and we now have an enterprise app store aimed at partners where they can host their apps and integrations. Checkout this video recently released featuring my VP, Sanjay Sinha, where he explains the ISV partner eco-system, how its changing the way we do business and the key benefits for ISV and OEM partners.

 



Thursday Apr 17, 2014

Deploying JAXWS to JCS?? Getting "java.lang.ClassNotFoundException: org.apache.xalan.processor.TransformerFactoryImpl" error

Hey all,

  • Problem
  • The issue
    • Its a bug on Java Cloud Server (bug#18241690), basically JCS is picking up the wrong XSL transformer
  •  Solution
    • In your code simply put the following piece of java code to execute when your application starts up

System.setProperty("javax.xml.transform.TransformerFactory",
        "com.sun.org.apache.xalan.internal.xsltc.trax.TransformerFactoryImpl");

 And all should be fine :-)


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Architect & Technology Evangelist - If its middleware,PaaS/SaaS integration then I'm interested

The views expressed on this blog are my own and do not necessarily reflect the views of Oracle.

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