Hi, I have started working on debugger wrapping. So far I have made progress through first two test cases at [1]. However, the code is failing in test case 3.
*This is because of python crashing with following error when callback events are fired from non python created threads. The issue affects not only the debugger but other callbacks such as StreamCallback and QueryCallback.* > Fatal Python error: take_gil: NULL tstate This error appear only in Python versions 3.4+. The code works fine when I tested with Python 3.3 and below. Furthermore, the error doesn't appear in any Python version when the debugger is connected. During further investigation of error, I found the documented bug [2] of Python which affect Python 3.4+ in similar manner. So far, a possible solution we have is to use a single python created thread to transfer callbacks from Java side to Python. For this purpose, we can use a queue (in java) to hold callback events triggered from java and a single (python created) thread to transfer the events in queue to python. However, this approach might have some performance issues. Can I know your opinion on this approach? (So far I have not implemented this approach) Furthermore, I have opened an issue in pyjnius github [3] (the API I use to communicate between Java and Python) on this matter. It might also be possible to fix the issue from pyjnius side using some of the suggestions available in [2] and [4]. I will look into this approach as well. [1] - https://github.com/wso2/siddhi/blob/79608b6aea4fbd99bb08cf64493c8b4144bc32e4/modules/siddhi-core/src/test/java/org/wso2/siddhi/core/debugger/TestDebugger.java [2] - https://bugs.python.org/issue20891 [3] - https://github.com/kivy/pyjnius/issues/276 [4] - https://bugs.python.org/issue19576 Thanks and Regards, Madhawa On Thu, May 25, 2017 at 5:32 AM, Sriskandarajah Suhothayan <s...@wso2.com> wrote: > Great, you can do the debugger now, he said after finishing the debugger > work, work on wrap event simulator . > > Regards > Suho > > On Wed, May 24, 2017 at 6:19 PM, Madhawa Vidanapathirana < > madhawavidanapathir...@gmail.com> wrote: > >> Hi, >> >> I have updated the README.md file. Will let you know when I have progress >> with debugger. >> >> Thanks >> Madhawa >> >> On Mon, May 22, 2017 at 12:41 PM, Grainier Perera <grain...@wso2.com> >> wrote: >> >>> Hi Madhawa, >>> >>> I went through your impl and it works great. Try to improve the test >>> cases and documentation (README.md on git) when you get a time. >>> >>> Furthermore, I have added Event simulator REST API endpoints to the doc >>> that you shared earlier. After getting debugger to work, try to wrap event >>> simulator endpoints as well. You can refer to [1] for the documentation on >>> them. >>> >>> [1] https://docs.wso2.com/display/DAS400/Simulating+Events >>> >>> Regards, >>> Grainier. >>> >>> On Sun, May 21, 2017 at 6:00 PM, Madhawa Vidanapathirana < >>> madhawavidanapathir...@gmail.com> wrote: >>> >>>> Hi, >>>> >>>> I started working on the native wrapper. So far, have the very basic >>>> functionality working for Siddhi 3.1 and Siddhi 4.0. >>>> I am maintaining my code at the repo [1]. >>>> >>>> Next step is getting the Siddhi debugger working. I will let you know >>>> when it is done. >>>> >>>> [1] - https://github.com/madhawav/SiddhiCEPPythonAPI >>>> >>>> Thanks, >>>> Madhawa >>>> >>>> >>>> On Fri, May 19, 2017 at 12:47 PM, Sriskandarajah Suhothayan < >>>> s...@wso2.com> wrote: >>>> >>>>> Sure we'll look into that. >>>>> >>>>> As the immediate next step can you make finish the work on native >>>>> Siddhi working with python. >>>>> Make sure Siddhi debugger also works. >>>>> >>>>> Regards >>>>> Suho >>>>> >>>>> On Fri, May 19, 2017 at 11:45 AM, Madhawa Vidanapathirana < >>>>> madhawavidanapathir...@gmail.com> wrote: >>>>> >>>>>> Hi, >>>>>> >>>>>> I have updated the shared doc [1] by adding "List of Admin Services >>>>>> to be used for DAS 3.1". Feel free to add-in your suggestions as well. >>>>>> >>>>>> Also, are their any documentation available on specific Admin >>>>>> Services APIs I have mentioned in doc? Such as a Reference Guide >>>>>> describing >>>>>> the methods and parameters of individual Admin Services APIs. I am >>>>>> already >>>>>> aware of the general documentation on Admin Services available at [2] >>>>>> >>>>>> [1] - https://docs.google.com/document/d/154ndex3OBoE0zNOLHatmMOvt >>>>>> 2JHh9RJya2VdHlHOTl4/edit?usp=sharing >>>>>> [2] - https://docs.wso2.com/display/DAS310/Calling+Admin+Services+ >>>>>> from+Apps >>>>>> >>>>>> Thanks, >>>>>> Madhawa >>>>>> >>>>>> On Tue, May 9, 2017 at 11:11 AM, Sriskandarajah Suhothayan < >>>>>> s...@wso2.com> wrote: >>>>>> >>>>>>> +1 for the approach. >>>>>>> We will add the classes >>>>>>> >>>>>>> On Tue, May 9, 2017 at 12:05 AM Madhawa Vidanapathirana < >>>>>>> madhawavidanapathir...@gmail.com> wrote: >>>>>>> >>>>>>>> Hi, >>>>>>>> >>>>>>>> I will look into REST side also then. Already found good APIs to >>>>>>>> work with Native Calls and SOAP. >>>>>>>> >>>>>>>> I am also trying to come up with a list of classes of Siddhi Java >>>>>>>> Library that should be exposed via Python API. I don't think its >>>>>>>> required >>>>>>>> to wrap the internal classes since their functionality is not directly >>>>>>>> used >>>>>>>> by Siddhi Java Library users. >>>>>>>> >>>>>>>> I will update the list of classes to be wrapped at link below. Feel >>>>>>>> free to add in your suggestions as well. >>>>>>>> https://docs.google.com/document/d/154ndex3OBoE0zNOLHatmMOvt >>>>>>>> 2JHh9RJya2VdHlHOTl4/edit?usp=sharing >>>>>>>> >>>>>>>> Thanks and Regards, >>>>>>>> Madhawa >>>>>>>> >>>>>>>> >>>>>>>> On Sun, May 7, 2017 at 11:26 PM, Sriskandarajah Suhothayan < >>>>>>>> s...@wso2.com> wrote: >>>>>>>> >>>>>>>>> Siddhi 3.x is compatible with DAS 3.1, and Siddhi 4.x is >>>>>>>>> compatible with DAS 4.0 which we are still working on. >>>>>>>>> >>>>>>>>> Siddhi APIs does not drastically change from 3.x to 4.x, >>>>>>>>> DAS 3.1 uses SOAP and DAS 4.0 uses HTTP/REST APIs >>>>>>>>> >>>>>>>>> So apart from native APIs, if you have figured out a way to use >>>>>>>>> REST and SOAP we are good enough. >>>>>>>>> >>>>>>>>> Regards >>>>>>>>> Suho >>>>>>>>> >>>>>>>>> On Sun, May 7, 2017 at 12:00 PM, Madhawa Vidanapathirana < >>>>>>>>> madhawavidanapathir...@gmail.com> wrote: >>>>>>>>> >>>>>>>>>> Hi, >>>>>>>>>> Need bit more clarity on what versions of products we should >>>>>>>>>> build on. >>>>>>>>>> >>>>>>>>>> Are we developing on DAS 3.1 (as mentioned in beginning of mail >>>>>>>>>> thread) or 4.0 (mentioned in previous mail) ? >>>>>>>>>> Also, what version of WSO2 CEP? >>>>>>>>>> >>>>>>>>>> According to my understanding so far, we are developing on Siddhi >>>>>>>>>> Java Library 4.0. >>>>>>>>>> >>>>>>>>>> Thanks and Regards, >>>>>>>>>> Madhawa >>>>>>>>>> >>>>>>>>>> On Sat, May 6, 2017 at 1:27 PM, Mohanadarshan Vivekanandalingam < >>>>>>>>>> mo...@wso2.com> wrote: >>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> On Sat, May 6, 2017 at 9:06 AM, Sriskandarajah Suhothayan < >>>>>>>>>>> s...@wso2.com> wrote: >>>>>>>>>>> >>>>>>>>>>>> @Mohan on DAS 4.0 do we have similar services like admin >>>>>>>>>>>> services at the worker? >>>>>>>>>>>> >>>>>>>>>>>> Shall we come up with the exact list of apis that we need to >>>>>>>>>>>> have ? So he can also incorporate them. >>>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> Yes, I have already listed some apis in [1].. Will get the >>>>>>>>>>> finalized list soon and share with Madhawa.. >>>>>>>>>>> >>>>>>>>>>> [1] https://docs.google.com/spreadsheets/d/1m0sh4DLABCFzCBmj >>>>>>>>>>> EXtVTrRGM0Mc6lvyYQP6rI99zhQ/edit#gid=0 >>>>>>>>>>> >>>>>>>>>>> Thanks, >>>>>>>>>>> Mohan >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>>> >>>>>>>>>>>> Regards >>>>>>>>>>>> Suho >>>>>>>>>>>> >>>>>>>>>>>> On Fri, May 5, 2017 at 9:16 PM Mohanadarshan Vivekanandalingam < >>>>>>>>>>>> mo...@wso2.com> wrote: >>>>>>>>>>>> >>>>>>>>>>>>> [Adding other project mentors] >>>>>>>>>>>>> >>>>>>>>>>>>> On Fri, May 5, 2017 at 5:52 PM, Madhawa Vidanapathirana < >>>>>>>>>>>>> madhawavidanapathir...@gmail.com> wrote: >>>>>>>>>>>>> >>>>>>>>>>>>>> Hi, >>>>>>>>>>>>>> Thank you for accepting my proposal for Project "Python API >>>>>>>>>>>>>> for Siddhi CEP" in GSoC. >>>>>>>>>>>>>> >>>>>>>>>>>>>> The original proposal submitted by myself is available at [1]. >>>>>>>>>>>>>> >>>>>>>>>>>>>> Progress made so far is as follows. >>>>>>>>>>>>>> >>>>>>>>>>>>>> 1. Figured out a good technique to access JAVA APIs from >>>>>>>>>>>>>> Python via Native Calls. >>>>>>>>>>>>>> - Pyjnius Framework supports both method calls and >>>>>>>>>>>>>> callbacks between Python and Java. >>>>>>>>>>>>>> 2. Has wrapped the basic functionality of Siddhi CEP Java >>>>>>>>>>>>>> Library using Python in prototype implementations [2]. >>>>>>>>>>>>>> 3. Currently in the process of figuring out a good method >>>>>>>>>>>>>> to communicate with Admin Services from Python. >>>>>>>>>>>>>> - Zeep API [3] seems to be a good solution. It >>>>>>>>>>>>>> supports SSL as well. I have already managed to >>>>>>>>>>>>>> authenticate and invoke >>>>>>>>>>>>>> some methods of WSO2 DAS through this API. >>>>>>>>>>>>>> >>>>>>>>>>>>>> During the community bonding period, my plan is to gain more >>>>>>>>>>>>>> clarity on expected architecture of the system such as what sort >>>>>>>>>>>>>> of a >>>>>>>>>>>>>> public interface would be suitable for the Python API. I also >>>>>>>>>>>>>> hope to learn >>>>>>>>>>>>>> more on Admin Services Interface of WSO2 DAS. >>>>>>>>>>>>>> >>>>>>>>>>>>>> Would you like to see any changes in the proposal? Shall I >>>>>>>>>>>>>> proceed as per the plan their? >>>>>>>>>>>>>> >>>>>>>>>>>>>> [1] - https://drive.google.com/file/ >>>>>>>>>>>>>> d/0B7wIuEzJseiwUF9xWGFRUnQyMWc/view?usp=sharing >>>>>>>>>>>>>> [2] - https://github.com/madhawav/CE >>>>>>>>>>>>>> P-Python-Wraps/tree/master/Pyjnius_Prototype_Wrap_Python2_3 >>>>>>>>>>>>>> [3] - http://docs.python-zeep.org/en/master/ >>>>>>>>>>>>>> >>>>>>>>>>>>>> Thanks and Regards, >>>>>>>>>>>>>> >>>>>>>>>>>>>> Madhawa >>>>>>>>>>>>>> >>>>>>>>>>>>>> On Tue, Apr 4, 2017 at 1:52 PM, Sriskandarajah Suhothayan < >>>>>>>>>>>>>> s...@wso2.com> wrote: >>>>>>>>>>>>>> >>>>>>>>>>>>>>> Great >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> Suho >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> On Tue, Apr 4, 2017 at 11:10 AM, Madhawa Vidanapathirana < >>>>>>>>>>>>>>> madhawavidanapathir...@gmail.com> wrote: >>>>>>>>>>>>>>> >>>>>>>>>>>>>>>> Hi Suho, >>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>> I have submitted the final proposal through GSoC Dashboard. >>>>>>>>>>>>>>>> Thank you for all the support given. >>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>> Looking forward for a great GSoC with WSO2. >>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>> Regards, >>>>>>>>>>>>>>>> Madhawa >>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>> On Monday, March 27, 2017, Madhawa Vidanapathirana < >>>>>>>>>>>>>>>> madhawavidanapathir...@gmail.com> wrote: >>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>> Hi, >>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>> I have shared the finalized draft proposal via the Google >>>>>>>>>>>>>>>>> Summer of Code Web Portal. Kindly let me know if any changes >>>>>>>>>>>>>>>>> are required. >>>>>>>>>>>>>>>>> Hoping to submit the final proposal with changes based on >>>>>>>>>>>>>>>>> your feedback. >>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>> Regards, >>>>>>>>>>>>>>>>> Madhawa >>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>> On Fri, Mar 24, 2017 at 4:15 PM, Madhawa Vidanapathirana < >>>>>>>>>>>>>>>>> madhawavidanapathir...@gmail.com> wrote: >>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>> Hi, >>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>> Good news. >>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>> Requested a release from Pyjnius Developer Team [1] and >>>>>>>>>>>>>>>>>> managed to get a new release [2] to Python Package Index >>>>>>>>>>>>>>>>>> (PIP). Therefore, >>>>>>>>>>>>>>>>>> we no longer have to develop their library from GitHub code. >>>>>>>>>>>>>>>>>> We can simply consider it as a dependency which gets auto >>>>>>>>>>>>>>>>>> installed when our final product is deployed. >>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>> [1] - https://github.com/kivy/pyjniu >>>>>>>>>>>>>>>>>> s/issues/189#issuecomment-288750222 >>>>>>>>>>>>>>>>>> [2] - https://pypi.python.org/pypi/pyjnius/1.1.1 >>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>> Pyjnius is a library which can be used for calling Java >>>>>>>>>>>>>>>>>> methods from Python and obtaining callback responses. It >>>>>>>>>>>>>>>>>> uses native method >>>>>>>>>>>>>>>>>> calls. >>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>> Regards, >>>>>>>>>>>>>>>>>> Madhawa >>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>> On Thu, Mar 23, 2017 at 1:48 AM, Sriskandarajah >>>>>>>>>>>>>>>>>> Suhothayan <s...@wso2.com> wrote: >>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>> Good to know that it worked :) >>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>> Regards >>>>>>>>>>>>>>>>>>> Suho >>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>> On Wed, Mar 22, 2017 at 11:24 PM, Madhawa >>>>>>>>>>>>>>>>>>> Vidanapathirana <madhawavidanapathir...@gmail.com> >>>>>>>>>>>>>>>>>>> wrote: >>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>> Hi Suho, >>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>> Got the prototype working with Python 3 as well. Refer >>>>>>>>>>>>>>>>>>>> the link below for sources. >>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>> https://github.com/madhawav/CE >>>>>>>>>>>>>>>>>>>> P-Python-Wraps/tree/master/Pyj >>>>>>>>>>>>>>>>>>>> nius_Prototype_Wrap_Python2_3 >>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>> This version works with both Python 2.7 and 3.x. >>>>>>>>>>>>>>>>>>>> (Tested on 2.7 and 3.5). Uses native calls via Pyjnius API. >>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>> Please note: When you are installing Pyjnius from >>>>>>>>>>>>>>>>>>>> source, don't use the same local copy of source files for >>>>>>>>>>>>>>>>>>>> both Python2 and >>>>>>>>>>>>>>>>>>>> Python3. The install scripts of Pyjnius leaves temporary >>>>>>>>>>>>>>>>>>>> files that make >>>>>>>>>>>>>>>>>>>> subsequent installs on a different version of Python fail. >>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>> Regards, >>>>>>>>>>>>>>>>>>>> Madhawa >>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>> On Mon, Mar 20, 2017 at 12:44 PM, Madhawa >>>>>>>>>>>>>>>>>>>> Vidanapathirana <madhawavidanapathir...@gmail.com> >>>>>>>>>>>>>>>>>>>> wrote: >>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>> Hi Suho, >>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>> Installation via PIP can be done. I will add it to >>>>>>>>>>>>>>>>>>>>> Project Proposal. >>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>> Regards, >>>>>>>>>>>>>>>>>>>>> Madhawa >>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>> On Mon, Mar 20, 2017 at 11:25 AM, Sriskandarajah >>>>>>>>>>>>>>>>>>>>> Suhothayan <s...@wso2.com> wrote: >>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>> On Sun, Mar 19, 2017 at 4:02 PM, Madhawa >>>>>>>>>>>>>>>>>>>>>> Vidanapathirana <madhawavidanapathir...@gmail.com> >>>>>>>>>>>>>>>>>>>>>> wrote: >>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>> Hi Suho, >>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>> Going ahead with the proposal, few questions crossed >>>>>>>>>>>>>>>>>>>>>>> my mind. >>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>> 1. You mentioned previously that WSO2 DAS should >>>>>>>>>>>>>>>>>>>>>>> also be supported. What sort of interactions are >>>>>>>>>>>>>>>>>>>>>>> expected with WSO2 DAS? >>>>>>>>>>>>>>>>>>>>>>> 1. Should publishing events to WSO2 DAS from >>>>>>>>>>>>>>>>>>>>>>> Python Siddhi API supported? >>>>>>>>>>>>>>>>>>>>>>> 2. Should deploying of Siddhi Queries to WSO2 >>>>>>>>>>>>>>>>>>>>>>> DAS through Python Siddhi API be supported? >>>>>>>>>>>>>>>>>>>>>>> 3. Any other expectations? >>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>> For the integration with DAS we can use HTTP calls >>>>>>>>>>>>>>>>>>>>>> and deploy Siddhi queries and send events to that, we >>>>>>>>>>>>>>>>>>>>>> should also start a >>>>>>>>>>>>>>>>>>>>>> server from the python side to receive events from DAS >>>>>>>>>>>>>>>>>>>>>> and print them. >>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>> We can work on the details of that after the >>>>>>>>>>>>>>>>>>>>>> proposal. >>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>> One more thing to add, can we also implement Siddhi >>>>>>>>>>>>>>>>>>>>>> (the project you will be creating) to be installed via >>>>>>>>>>>>>>>>>>>>>> pip ? >>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>> Regards >>>>>>>>>>>>>>>>>>>>>> Suho >>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>> If any of above can be considered as "optional", >>>>>>>>>>>>>>>>>>>>>>> indicate them as well. >>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>> Regards, >>>>>>>>>>>>>>>>>>>>>>> Madhawa >>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>> On Sat, Mar 18, 2017 at 9:00 PM, Sriskandarajah >>>>>>>>>>>>>>>>>>>>>>> Suhothayan <s...@wso2.com> wrote: >>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>> For the initial cut this looks good, please go >>>>>>>>>>>>>>>>>>>>>>>> ahead with the proposal. Let's check some other >>>>>>>>>>>>>>>>>>>>>>>> alternatives and start the >>>>>>>>>>>>>>>>>>>>>>>> development. >>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>> Regards >>>>>>>>>>>>>>>>>>>>>>>> Suho >>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>> On Sat, Mar 18, 2017 at 1:01 PM, Madhawa >>>>>>>>>>>>>>>>>>>>>>>> Vidanapathirana <madhawavidanapathir...@gmail.com> >>>>>>>>>>>>>>>>>>>>>>>> wrote: >>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>> Hi Suho, >>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>> You can find the python version of test case >>>>>>>>>>>>>>>>>>>>>>>>> written using Pyjnius in below link. >>>>>>>>>>>>>>>>>>>>>>>>> https://github.com/madhawav/CE >>>>>>>>>>>>>>>>>>>>>>>>> P-Python-Wraps/tree/master/Pyj >>>>>>>>>>>>>>>>>>>>>>>>> nius%20Prototype%20Wrap >>>>>>>>>>>>>>>>>>>>>>>>> Instructions on building the code is also given >>>>>>>>>>>>>>>>>>>>>>>>> their. >>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>> During development, I noticed following >>>>>>>>>>>>>>>>>>>>>>>>> disadvantages of Pyjnius API >>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>> - Not compatible with Python 3.x. >>>>>>>>>>>>>>>>>>>>>>>>> - There are no stable releases. However, the >>>>>>>>>>>>>>>>>>>>>>>>> code available in master branch is relatively >>>>>>>>>>>>>>>>>>>>>>>>> stable. >>>>>>>>>>>>>>>>>>>>>>>>> - Difficult to configure. It is required to >>>>>>>>>>>>>>>>>>>>>>>>> develop the library from source. This would make >>>>>>>>>>>>>>>>>>>>>>>>> it difficult to distribute >>>>>>>>>>>>>>>>>>>>>>>>> an API developed on Pyjnius. >>>>>>>>>>>>>>>>>>>>>>>>> - There are no evidence that a proper release >>>>>>>>>>>>>>>>>>>>>>>>> would be done soon. >>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>> However, Pyjnius supports callback of events from >>>>>>>>>>>>>>>>>>>>>>>>> Java to Python. Additionally, it is easier to develop >>>>>>>>>>>>>>>>>>>>>>>>> using Pyjnius ones it >>>>>>>>>>>>>>>>>>>>>>>>> is configured. >>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>> So, I had a looked at some of the other options as >>>>>>>>>>>>>>>>>>>>>>>>> well. >>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>> Java Bridge >>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>> *Advantages* >>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>> - Has stable releases available through Python >>>>>>>>>>>>>>>>>>>>>>>>> Package Index. (pip) >>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>> *Disadvantages* >>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>> - No direct call-back mechanism to receive >>>>>>>>>>>>>>>>>>>>>>>>> events from Java side. It is possible to execute >>>>>>>>>>>>>>>>>>>>>>>>> Python scripts in Java >>>>>>>>>>>>>>>>>>>>>>>>> but those scripts would not be in same context as >>>>>>>>>>>>>>>>>>>>>>>>> Python Host App. >>>>>>>>>>>>>>>>>>>>>>>>> - Comparatively harder to develop on but it is >>>>>>>>>>>>>>>>>>>>>>>>> manageable. >>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>> Py4J >>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>> The main difference in Py4J is that it uses socket >>>>>>>>>>>>>>>>>>>>>>>>> connections to communicate with JVM instead of JNI. >>>>>>>>>>>>>>>>>>>>>>>>> (secured socket >>>>>>>>>>>>>>>>>>>>>>>>> connections are possible). >>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>> *Advantages* >>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>> - Stable release available through Python >>>>>>>>>>>>>>>>>>>>>>>>> Package Index (pip). Easy to configure. >>>>>>>>>>>>>>>>>>>>>>>>> - Can connect to an already running Java >>>>>>>>>>>>>>>>>>>>>>>>> application (with Py4J) and communicate with it. >>>>>>>>>>>>>>>>>>>>>>>>> (Thus, can be used to >>>>>>>>>>>>>>>>>>>>>>>>> communicate with a running instance of WSO2 CEP) >>>>>>>>>>>>>>>>>>>>>>>>> - Supports callback events. >>>>>>>>>>>>>>>>>>>>>>>>> - Well maintained documentation. Active >>>>>>>>>>>>>>>>>>>>>>>>> project. >>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>> *Disadvantages* >>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>> - Would require a work-around to avoid >>>>>>>>>>>>>>>>>>>>>>>>> clashing between socket connection ports when >>>>>>>>>>>>>>>>>>>>>>>>> concurrent applications use >>>>>>>>>>>>>>>>>>>>>>>>> the API. >>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>> As of now, I feel Py4J is the most suitable >>>>>>>>>>>>>>>>>>>>>>>>> option. However, I am yet to look at some other >>>>>>>>>>>>>>>>>>>>>>>>> options available such as >>>>>>>>>>>>>>>>>>>>>>>>> JPy and JCC. >>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>> Regards, >>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>> Madhawa >>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>> On Wed, Mar 15, 2017 at 11:10 PM, Sriskandarajah >>>>>>>>>>>>>>>>>>>>>>>>> Suhothayan <s...@wso2.com> wrote: >>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>> Great, do also start working on writing the >>>>>>>>>>>>>>>>>>>>>>>>>> project proposal. >>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>> Regards >>>>>>>>>>>>>>>>>>>>>>>>>> Suho >>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>> On Wed, Mar 15, 2017 at 10:58 PM, Madhawa >>>>>>>>>>>>>>>>>>>>>>>>>> Vidanapathirana <madhawavidanapathir...@gmail.com >>>>>>>>>>>>>>>>>>>>>>>>>> > wrote: >>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>> Hi Suho, >>>>>>>>>>>>>>>>>>>>>>>>>>> Progress made so far is managed to write a >>>>>>>>>>>>>>>>>>>>>>>>>>> python version of test case you suggested using >>>>>>>>>>>>>>>>>>>>>>>>>>> Pyjnius [1] [2]. >>>>>>>>>>>>>>>>>>>>>>>>>>> Pyjnius is capable of handling method calls and >>>>>>>>>>>>>>>>>>>>>>>>>>> callbacks to/from JAVA via JNI. >>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>> I will send the code here after I properly >>>>>>>>>>>>>>>>>>>>>>>>>>> arrange it into a prototype API. >>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>> [1] - https://pyjnius.readthedocs.io >>>>>>>>>>>>>>>>>>>>>>>>>>> /en/latest/index.html >>>>>>>>>>>>>>>>>>>>>>>>>>> [2] - https://github.com/kivy/pyjniu >>>>>>>>>>>>>>>>>>>>>>>>>>> s/blob/master/docs/source/index.rst >>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>> Regards, >>>>>>>>>>>>>>>>>>>>>>>>>>> Madhawa >>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>> On Wed, Mar 15, 2017 at 1:11 AM, Sriskandarajah >>>>>>>>>>>>>>>>>>>>>>>>>>> Suhothayan <s...@wso2.com> wrote: >>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>> As the first step focus on building APIs such >>>>>>>>>>>>>>>>>>>>>>>>>>>> that we can write the following test case[1] in >>>>>>>>>>>>>>>>>>>>>>>>>>>> python. >>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>> [1]https://github.com/wso2/sid >>>>>>>>>>>>>>>>>>>>>>>>>>>> dhi/blob/master/modules/siddhi >>>>>>>>>>>>>>>>>>>>>>>>>>>> -samples/quick-start-samples/s >>>>>>>>>>>>>>>>>>>>>>>>>>>> rc/main/java/org/wso2/siddhi/s >>>>>>>>>>>>>>>>>>>>>>>>>>>> ample/SimpleFilterSample.java >>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>> Regards >>>>>>>>>>>>>>>>>>>>>>>>>>>> Suho >>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>> On Tue, Mar 14, 2017 at 9:55 AM, Madhawa >>>>>>>>>>>>>>>>>>>>>>>>>>>> Vidanapathirana <madhawavidanapathirana@gmail. >>>>>>>>>>>>>>>>>>>>>>>>>>>> com> wrote: >>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>> Hi, >>>>>>>>>>>>>>>>>>>>>>>>>>>>> Thank you for your quick reply. >>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>> Since directly using Siddhi Library is the >>>>>>>>>>>>>>>>>>>>>>>>>>>>> more general case, I'll first focus on it. >>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>> 1) I am thinking about following the same >>>>>>>>>>>>>>>>>>>>>>>>>>>>> structure in JAVA API, centered around Siddhi >>>>>>>>>>>>>>>>>>>>>>>>>>>>> Manager. Any opinions on >>>>>>>>>>>>>>>>>>>>>>>>>>>>> this? >>>>>>>>>>>>>>>>>>>>>>>>>>>>> 2) Any idea on extent to which lower >>>>>>>>>>>>>>>>>>>>>>>>>>>>> level/internal components should be exposed? >>>>>>>>>>>>>>>>>>>>>>>>>>>>> (e.g. - Exposing >>>>>>>>>>>>>>>>>>>>>>>>>>>>> "StreamDefinition" class in addition to creating >>>>>>>>>>>>>>>>>>>>>>>>>>>>> stream via Siddhi query >>>>>>>>>>>>>>>>>>>>>>>>>>>>> using "siddhiManager.createExecutionPlanRuntime"). >>>>>>>>>>>>>>>>>>>>>>>>>>>>> I have heard that it is usually discouraged to >>>>>>>>>>>>>>>>>>>>>>>>>>>>> use lower level components >>>>>>>>>>>>>>>>>>>>>>>>>>>>> instead of the query approach. >>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>> Will try to send you a prototype covering >>>>>>>>>>>>>>>>>>>>>>>>>>>>> basic functionality through Siddhi Java API, >>>>>>>>>>>>>>>>>>>>>>>>>>>>> before making the proposal for >>>>>>>>>>>>>>>>>>>>>>>>>>>>> entire project. >>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>> Madhawa >>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>> On Mon, Mar 13, 2017 at 9:53 PM, >>>>>>>>>>>>>>>>>>>>>>>>>>>>> Sriskandarajah Suhothayan <s...@wso2.com> >>>>>>>>>>>>>>>>>>>>>>>>>>>>> wrote: >>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>> On Sun, Mar 12, 2017 at 12:37 PM, Madhawa >>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Vidanapathirana < >>>>>>>>>>>>>>>>>>>>>>>>>>>>>> madhawavidanapathir...@gmail.com> wrote: >>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Hi. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> I am an undergraduate from Department of >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Computer Science and Engineering, University of >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Moratuwa. I recently >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> completed my internship at WSO2 working with >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> the Support Team on the >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> project WSO2 Support Knowledge Base. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> I am interested on GSOC Project* "Proposal >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 16: Python API for Siddhi CEP"*. My >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> internship project at WSO2 was almost entirely >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> done using Python. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Additionally, I used Py4J Framework to >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> interface certain parts of the >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> project to JAVA APIs. Furthermore, I have a >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> certain amount of exposure with >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Siddhi/CEP through the WHACK project I took >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> part. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> I went through the provided details in WSO2 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> GSOC 2017 Project List page and I am interested >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> to know some more details. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 1. What version of CEP/Siddhi should be >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> used by the API? >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> You need to support the latest released >>>>>>>>>>>>>>>>>>>>>>>>>>>>>> version of Siddhi and DAS which is in DAS 3.1 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>> and also for the latest >>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Siddhi (4.0) >>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 1. In the description, does "Service >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> APIs" refer to "Admin Services API" which is >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> usually used by Admin Panel to >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> communicate with CEP? >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Yes, to deploy the queries and to send and >>>>>>>>>>>>>>>>>>>>>>>>>>>>>> receive events >>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 1. Should the Siddhi Python API require >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> WSO2 CEP to be running in order to make >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Python API usable? >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Not necessay it should both work with the >>>>>>>>>>>>>>>>>>>>>>>>>>>>>> running CEP/DAS and use Siddhi library in the >>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ohter cases. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 1. Is the Python API expected to do >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> configuring of Siddhi CEP, streaming events >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> to/from Siddhi CEP, or both? >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Yes in terms of queries. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Thank You >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> -- >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> *Madhawa Vidanapathirana* >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Student >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Department of Computer Science and >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Engineering >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> University of Moratuwa >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Sri Lanka >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Mobile: (+94) 716874425 <071%20687%204425> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Email: madhawavidanapathir...@gmail.com >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Linked-In: https://lk.linkedin >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> .com/in/madhawa-vidanapathirana-3430b94 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>> -- >>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>> *S. Suhothayan* >>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Associate Director / Architect & Team Lead >>>>>>>>>>>>>>>>>>>>>>>>>>>>>> of WSO2 Complex Event Processor >>>>>>>>>>>>>>>>>>>>>>>>>>>>>> *WSO2 Inc. *http://wso2.com >>>>>>>>>>>>>>>>>>>>>>>>>>>>>> * <http://wso2.com/>* >>>>>>>>>>>>>>>>>>>>>>>>>>>>>> lean . enterprise . middleware >>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>> *cell: (+94) 779 756 757 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>> <+94%2077%20975%206757> | blog: >>>>>>>>>>>>>>>>>>>>>>>>>>>>>> http://suhothayan.blogspot.com/ >>>>>>>>>>>>>>>>>>>>>>>>>>>>>> <http://suhothayan.blogspot.com/>twitter: >>>>>>>>>>>>>>>>>>>>>>>>>>>>>> http://twitter.com/suhothayan >>>>>>>>>>>>>>>>>>>>>>>>>>>>>> <http://twitter.com/suhothayan> | linked-in: >>>>>>>>>>>>>>>>>>>>>>>>>>>>>> http://lk.linkedin.com/in/suhothayan >>>>>>>>>>>>>>>>>>>>>>>>>>>>>> <http://lk.linkedin.com/in/suhothayan>* >>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>> -- >>>>>>>>>>>>>>>>>>>>>>>>>>>>> *Madhawa Vidanapathirana* >>>>>>>>>>>>>>>>>>>>>>>>>>>>> Student >>>>>>>>>>>>>>>>>>>>>>>>>>>>> Department of Computer Science and Engineering >>>>>>>>>>>>>>>>>>>>>>>>>>>>> University of Moratuwa >>>>>>>>>>>>>>>>>>>>>>>>>>>>> Sri Lanka >>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>> Mobile: (+94) 716874425 <071%20687%204425> >>>>>>>>>>>>>>>>>>>>>>>>>>>>> Email: madhawavidanapathir...@gmail.com >>>>>>>>>>>>>>>>>>>>>>>>>>>>> Linked-In: https://lk.linkedin >>>>>>>>>>>>>>>>>>>>>>>>>>>>> .com/in/madhawa-vidanapathirana-3430b94 >>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>> -- >>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>> *S. Suhothayan* >>>>>>>>>>>>>>>>>>>>>>>>>>>> Associate Director / Architect & Team Lead of >>>>>>>>>>>>>>>>>>>>>>>>>>>> WSO2 Complex Event Processor >>>>>>>>>>>>>>>>>>>>>>>>>>>> *WSO2 Inc. *http://wso2.com >>>>>>>>>>>>>>>>>>>>>>>>>>>> * <http://wso2.com/>* >>>>>>>>>>>>>>>>>>>>>>>>>>>> lean . enterprise . middleware >>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>> *cell: (+94) 779 756 757 >>>>>>>>>>>>>>>>>>>>>>>>>>>> <+94%2077%20975%206757> | blog: >>>>>>>>>>>>>>>>>>>>>>>>>>>> http://suhothayan.blogspot.com/ >>>>>>>>>>>>>>>>>>>>>>>>>>>> <http://suhothayan.blogspot.com/>twitter: >>>>>>>>>>>>>>>>>>>>>>>>>>>> http://twitter.com/suhothayan >>>>>>>>>>>>>>>>>>>>>>>>>>>> <http://twitter.com/suhothayan> | linked-in: >>>>>>>>>>>>>>>>>>>>>>>>>>>> http://lk.linkedin.com/in/suhothayan >>>>>>>>>>>>>>>>>>>>>>>>>>>> <http://lk.linkedin.com/in/suhothayan>* >>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>> -- >>>>>>>>>>>>>>>>>>>>>>>>>>> *Madhawa Vidanapathirana* >>>>>>>>>>>>>>>>>>>>>>>>>>> Student >>>>>>>>>>>>>>>>>>>>>>>>>>> Department of Computer Science and Engineering >>>>>>>>>>>>>>>>>>>>>>>>>>> University of Moratuwa >>>>>>>>>>>>>>>>>>>>>>>>>>> Sri Lanka >>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>> Mobile: (+94) 716874425 <071%20687%204425> >>>>>>>>>>>>>>>>>>>>>>>>>>> Email: madhawavidanapathir...@gmail.com >>>>>>>>>>>>>>>>>>>>>>>>>>> Linked-In: https://lk.linkedin >>>>>>>>>>>>>>>>>>>>>>>>>>> .com/in/madhawa-vidanapathirana-3430b94 >>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>> -- >>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>> *S. Suhothayan* >>>>>>>>>>>>>>>>>>>>>>>>>> Associate Director / Architect & Team Lead of >>>>>>>>>>>>>>>>>>>>>>>>>> WSO2 Complex Event Processor >>>>>>>>>>>>>>>>>>>>>>>>>> *WSO2 Inc. *http://wso2.com >>>>>>>>>>>>>>>>>>>>>>>>>> * <http://wso2.com/>* >>>>>>>>>>>>>>>>>>>>>>>>>> lean . enterprise . middleware >>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>> *cell: (+94) 779 756 757 <+94%2077%20975%206757> >>>>>>>>>>>>>>>>>>>>>>>>>> | blog: http://suhothayan.blogspot.com/ >>>>>>>>>>>>>>>>>>>>>>>>>> <http://suhothayan.blogspot.com/>twitter: >>>>>>>>>>>>>>>>>>>>>>>>>> http://twitter.com/suhothayan >>>>>>>>>>>>>>>>>>>>>>>>>> <http://twitter.com/suhothayan> | linked-in: >>>>>>>>>>>>>>>>>>>>>>>>>> http://lk.linkedin.com/in/suhothayan >>>>>>>>>>>>>>>>>>>>>>>>>> <http://lk.linkedin.com/in/suhothayan>* >>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>> -- >>>>>>>>>>>>>>>>>>>>>>>>> *Madhawa Vidanapathirana* >>>>>>>>>>>>>>>>>>>>>>>>> Student >>>>>>>>>>>>>>>>>>>>>>>>> Department of Computer Science and Engineering >>>>>>>>>>>>>>>>>>>>>>>>> University of Moratuwa >>>>>>>>>>>>>>>>>>>>>>>>> Sri Lanka >>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>> Mobile: (+94) 716874425 <071%20687%204425> >>>>>>>>>>>>>>>>>>>>>>>>> Email: madhawavidanapathir...@gmail.com >>>>>>>>>>>>>>>>>>>>>>>>> Linked-In: https://lk.linkedin >>>>>>>>>>>>>>>>>>>>>>>>> .com/in/madhawa-vidanapathirana-3430b94 >>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>> -- >>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>> *S. Suhothayan* >>>>>>>>>>>>>>>>>>>>>>>> Associate Director / Architect & Team Lead of WSO2 >>>>>>>>>>>>>>>>>>>>>>>> Complex Event Processor >>>>>>>>>>>>>>>>>>>>>>>> *WSO2 Inc. *http://wso2.com >>>>>>>>>>>>>>>>>>>>>>>> * <http://wso2.com/>* >>>>>>>>>>>>>>>>>>>>>>>> lean . enterprise . middleware >>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>> *cell: (+94) 779 756 757 <+94%2077%20975%206757> | >>>>>>>>>>>>>>>>>>>>>>>> blog: http://suhothayan.blogspot.com/ >>>>>>>>>>>>>>>>>>>>>>>> <http://suhothayan.blogspot.com/>twitter: >>>>>>>>>>>>>>>>>>>>>>>> http://twitter.com/suhothayan >>>>>>>>>>>>>>>>>>>>>>>> <http://twitter.com/suhothayan> | linked-in: >>>>>>>>>>>>>>>>>>>>>>>> http://lk.linkedin.com/in/suhothayan >>>>>>>>>>>>>>>>>>>>>>>> <http://lk.linkedin.com/in/suhothayan>* >>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>> -- >>>>>>>>>>>>>>>>>>>>>>> *Madhawa Vidanapathirana* >>>>>>>>>>>>>>>>>>>>>>> Student >>>>>>>>>>>>>>>>>>>>>>> Department of Computer Science and Engineering >>>>>>>>>>>>>>>>>>>>>>> University of Moratuwa >>>>>>>>>>>>>>>>>>>>>>> Sri Lanka >>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>> Mobile: (+94) 716874425 <071%20687%204425> >>>>>>>>>>>>>>>>>>>>>>> Email: madhawavidanapathir...@gmail.com >>>>>>>>>>>>>>>>>>>>>>> Linked-In: https://lk.linkedin >>>>>>>>>>>>>>>>>>>>>>> .com/in/madhawa-vidanapathirana-3430b94 >>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>> -- >>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>> *S. Suhothayan* >>>>>>>>>>>>>>>>>>>>>> Associate Director / Architect & Team Lead of WSO2 >>>>>>>>>>>>>>>>>>>>>> Complex Event Processor >>>>>>>>>>>>>>>>>>>>>> *WSO2 Inc. *http://wso2.com >>>>>>>>>>>>>>>>>>>>>> * <http://wso2.com/>* >>>>>>>>>>>>>>>>>>>>>> lean . enterprise . middleware >>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>> *cell: (+94) 779 756 757 <077%20975%206757> | blog: >>>>>>>>>>>>>>>>>>>>>> http://suhothayan.blogspot.com/ >>>>>>>>>>>>>>>>>>>>>> <http://suhothayan.blogspot.com/>twitter: >>>>>>>>>>>>>>>>>>>>>> http://twitter.com/suhothayan >>>>>>>>>>>>>>>>>>>>>> <http://twitter.com/suhothayan> | linked-in: >>>>>>>>>>>>>>>>>>>>>> http://lk.linkedin.com/in/suhothayan >>>>>>>>>>>>>>>>>>>>>> <http://lk.linkedin.com/in/suhothayan>* >>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>> -- >>>>>>>>>>>>>>>>>>>>> *Madhawa Vidanapathirana* >>>>>>>>>>>>>>>>>>>>> Student >>>>>>>>>>>>>>>>>>>>> Department of Computer Science and Engineering >>>>>>>>>>>>>>>>>>>>> University of Moratuwa >>>>>>>>>>>>>>>>>>>>> Sri Lanka >>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>> Mobile: (+94) 716874425 <+94%2071%20687%204425> >>>>>>>>>>>>>>>>>>>>> Email: madhawavidanapathir...@gmail.com >>>>>>>>>>>>>>>>>>>>> Linked-In: https://lk.linkedin >>>>>>>>>>>>>>>>>>>>> .com/in/madhawa-vidanapathirana-3430b94 >>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>> -- >>>>>>>>>>>>>>>>>>>> *Madhawa Vidanapathirana* >>>>>>>>>>>>>>>>>>>> Student >>>>>>>>>>>>>>>>>>>> Department of Computer Science and Engineering >>>>>>>>>>>>>>>>>>>> University of Moratuwa >>>>>>>>>>>>>>>>>>>> Sri Lanka >>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>> Mobile: (+94) 716874425 <071%20687%204425> >>>>>>>>>>>>>>>>>>>> Email: madhawavidanapathir...@gmail.com >>>>>>>>>>>>>>>>>>>> Linked-In: https://lk.linkedin >>>>>>>>>>>>>>>>>>>> .com/in/madhawa-vidanapathirana-3430b94 >>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>> -- >>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>> *S. Suhothayan* >>>>>>>>>>>>>>>>>>> Associate Director / Architect >>>>>>>>>>>>>>>>>>> *WSO2 Inc. *http://wso2.com >>>>>>>>>>>>>>>>>>> * <http://wso2.com/>* >>>>>>>>>>>>>>>>>>> lean . enterprise . middleware >>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>> *cell: (+94) 779 756 757 <+94%2077%20975%206757> | blog: >>>>>>>>>>>>>>>>>>> http://suhothayan.blogspot.com/ >>>>>>>>>>>>>>>>>>> <http://suhothayan.blogspot.com/>twitter: >>>>>>>>>>>>>>>>>>> http://twitter.com/suhothayan >>>>>>>>>>>>>>>>>>> <http://twitter.com/suhothayan> | linked-in: >>>>>>>>>>>>>>>>>>> http://lk.linkedin.com/in/suhothayan >>>>>>>>>>>>>>>>>>> <http://lk.linkedin.com/in/suhothayan>* >>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>> -- >>>>>>>>>>>>>>>>>> *Madhawa Vidanapathirana* >>>>>>>>>>>>>>>>>> Student >>>>>>>>>>>>>>>>>> Department of Computer Science and Engineering >>>>>>>>>>>>>>>>>> University of Moratuwa >>>>>>>>>>>>>>>>>> Sri Lanka >>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>> Mobile: (+94) 716874425 <+94%2071%20687%204425> >>>>>>>>>>>>>>>>>> Email: madhawavidanapathir...@gmail.com >>>>>>>>>>>>>>>>>> Linked-In: https://lk.linkedin >>>>>>>>>>>>>>>>>> .com/in/madhawa-vidanapathirana-3430b94 >>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>> -- >>>>>>>>>>>>>>>>> *Madhawa Vidanapathirana* >>>>>>>>>>>>>>>>> Student >>>>>>>>>>>>>>>>> Department of Computer Science and Engineering >>>>>>>>>>>>>>>>> University of Moratuwa >>>>>>>>>>>>>>>>> Sri Lanka >>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>> Mobile: (+94) 716874425 <071%20687%204425> >>>>>>>>>>>>>>>>> Email: madhawavidanapathir...@gmail.com >>>>>>>>>>>>>>>>> Linked-In: https://lk.linkedin >>>>>>>>>>>>>>>>> .com/in/madhawa-vidanapathirana-3430b94 >>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>> -- >>>>>>>>>>>>>>>> *Madhawa Vidanapathirana* >>>>>>>>>>>>>>>> Student >>>>>>>>>>>>>>>> Department of Computer Science and Engineering >>>>>>>>>>>>>>>> University of Moratuwa >>>>>>>>>>>>>>>> Sri Lanka >>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>> Mobile: (+94) 716874425 <071%20687%204425> >>>>>>>>>>>>>>>> Email: madhawavidanapathir...@gmail.com >>>>>>>>>>>>>>>> Linked-In: https://lk.linkedin >>>>>>>>>>>>>>>> .com/in/madhawa-vidanapathirana-3430b94 >>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>> >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> -- >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> *S. Suhothayan* >>>>>>>>>>>>>>> Associate Director / Architect >>>>>>>>>>>>>>> *WSO2 Inc. *http://wso2.com >>>>>>>>>>>>>>> * <http://wso2.com/>* >>>>>>>>>>>>>>> lean . enterprise . middleware >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> *cell: (+94) 779 756 757 <+94%2077%20975%206757> | blog: >>>>>>>>>>>>>>> http://suhothayan.blogspot.com/ >>>>>>>>>>>>>>> <http://suhothayan.blogspot.com/>twitter: >>>>>>>>>>>>>>> http://twitter.com/suhothayan <http://twitter.com/suhothayan> | >>>>>>>>>>>>>>> linked-in: >>>>>>>>>>>>>>> http://lk.linkedin.com/in/suhothayan >>>>>>>>>>>>>>> <http://lk.linkedin.com/in/suhothayan>* >>>>>>>>>>>>>>> >>>>>>>>>>>>>> >>>>>>>>>>>>>> >>>>>>>>>>>>>> >>>>>>>>>>>>>> -- >>>>>>>>>>>>>> *Madhawa Vidanapathirana* >>>>>>>>>>>>>> Student >>>>>>>>>>>>>> Department of Computer Science and Engineering >>>>>>>>>>>>>> University of Moratuwa >>>>>>>>>>>>>> Sri Lanka >>>>>>>>>>>>>> >>>>>>>>>>>>>> Mobile: (+94) 716874425 <+94%2071%20687%204425> >>>>>>>>>>>>>> Email: madhawavidanapathir...@gmail.com >>>>>>>>>>>>>> Linked-In: https://lk.linkedin.com/in/madhawa-vidanapathiran >>>>>>>>>>>>>> a-3430b94 >>>>>>>>>>>>>> >>>>>>>>>>>>>> _______________________________________________ >>>>>>>>>>>>>> Dev mailing list >>>>>>>>>>>>>> Dev@wso2.org >>>>>>>>>>>>>> http://wso2.org/cgi-bin/mailman/listinfo/dev >>>>>>>>>>>>>> >>>>>>>>>>>>>> >>>>>>>>>>>>> >>>>>>>>>>>>> >>>>>>>>>>>>> -- >>>>>>>>>>>>> *V. Mohanadarshan* >>>>>>>>>>>>> *Associate Tech Lead,* >>>>>>>>>>>>> *Data Technologies Team,* >>>>>>>>>>>>> *WSO2, Inc. http://wso2.com <http://wso2.com> * >>>>>>>>>>>>> *lean.enterprise.middleware.* >>>>>>>>>>>>> >>>>>>>>>>>>> email: mo...@wso2.com >>>>>>>>>>>>> phone:(+94) 771117673 <+94%2077%20111%207673> >>>>>>>>>>>>> >>>>>>>>>>>> -- >>>>>>>>>>>> >>>>>>>>>>>> *S. Suhothayan* >>>>>>>>>>>> Associate Director / Architect >>>>>>>>>>>> *WSO2 Inc. *http://wso2.com >>>>>>>>>>>> * <http://wso2.com/>* >>>>>>>>>>>> lean . enterprise . middleware >>>>>>>>>>>> >>>>>>>>>>>> >>>>>>>>>>>> *cell: (+94) 779 756 757 <+94%2077%20975%206757> | blog: >>>>>>>>>>>> http://suhothayan.blogspot.com/ >>>>>>>>>>>> <http://suhothayan.blogspot.com/>twitter: >>>>>>>>>>>> http://twitter.com/suhothayan <http://twitter.com/suhothayan> | >>>>>>>>>>>> linked-in: >>>>>>>>>>>> http://lk.linkedin.com/in/suhothayan >>>>>>>>>>>> <http://lk.linkedin.com/in/suhothayan>* >>>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> -- >>>>>>>>>>> *V. Mohanadarshan* >>>>>>>>>>> *Associate Tech Lead,* >>>>>>>>>>> *Data Technologies Team,* >>>>>>>>>>> *WSO2, Inc. http://wso2.com <http://wso2.com> * >>>>>>>>>>> *lean.enterprise.middleware.* >>>>>>>>>>> >>>>>>>>>>> email: mo...@wso2.com >>>>>>>>>>> phone:(+94) 771117673 <+94%2077%20111%207673> >>>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> -- >>>>>>>>>> *Madhawa Vidanapathirana* >>>>>>>>>> Student >>>>>>>>>> Department of Computer Science and Engineering >>>>>>>>>> University of Moratuwa >>>>>>>>>> Sri Lanka >>>>>>>>>> >>>>>>>>>> Mobile: (+94) 716874425 <071%20687%204425> >>>>>>>>>> Email: madhawavidanapathir...@gmail.com >>>>>>>>>> Linked-In: https://lk.linkedin.com/in/madhawa-vidanapathiran >>>>>>>>>> a-3430b94 >>>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> -- >>>>>>>>> >>>>>>>>> *S. Suhothayan* >>>>>>>>> Associate Director / Architect >>>>>>>>> *WSO2 Inc. *http://wso2.com >>>>>>>>> * <http://wso2.com/>* >>>>>>>>> lean . enterprise . middleware >>>>>>>>> >>>>>>>>> >>>>>>>>> *cell: (+94) 779 756 757 <+94%2077%20975%206757> | blog: >>>>>>>>> http://suhothayan.blogspot.com/ >>>>>>>>> <http://suhothayan.blogspot.com/>twitter: >>>>>>>>> http://twitter.com/suhothayan <http://twitter.com/suhothayan> | >>>>>>>>> linked-in: >>>>>>>>> http://lk.linkedin.com/in/suhothayan >>>>>>>>> <http://lk.linkedin.com/in/suhothayan>* >>>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> -- >>>>>>>> *Madhawa Vidanapathirana* >>>>>>>> Student >>>>>>>> Department of Computer Science and Engineering >>>>>>>> University of Moratuwa >>>>>>>> Sri Lanka >>>>>>>> >>>>>>>> Mobile: (+94) 716874425 <+94%2071%20687%204425> >>>>>>>> Email: madhawavidanapathir...@gmail.com >>>>>>>> Linked-In: https://lk.linkedin.com/in/madhawa-vidanapathiran >>>>>>>> a-3430b94 >>>>>>>> >>>>>>> -- >>>>>>> >>>>>>> *S. Suhothayan* >>>>>>> Associate Director / Architect >>>>>>> *WSO2 Inc. *http://wso2.com >>>>>>> * <http://wso2.com/>* >>>>>>> lean . enterprise . middleware >>>>>>> >>>>>>> >>>>>>> *cell: (+94) 779 756 757 <+94%2077%20975%206757> | blog: >>>>>>> http://suhothayan.blogspot.com/ >>>>>>> <http://suhothayan.blogspot.com/>twitter: >>>>>>> http://twitter.com/suhothayan <http://twitter.com/suhothayan> | >>>>>>> linked-in: >>>>>>> http://lk.linkedin.com/in/suhothayan >>>>>>> <http://lk.linkedin.com/in/suhothayan>* >>>>>>> >>>>>> >>>>>> >>>>>> >>>>>> -- >>>>>> *Madhawa Vidanapathirana* >>>>>> Student >>>>>> Department of Computer Science and Engineering >>>>>> University of Moratuwa >>>>>> Sri Lanka >>>>>> >>>>>> Mobile: (+94) 716874425 <071%20687%204425> >>>>>> Email: madhawavidanapathir...@gmail.com >>>>>> Linked-In: https://lk.linkedin.com/in/madhawa-vidanapathirana-3430b94 >>>>>> >>>>> >>>>> >>>>> >>>>> -- >>>>> >>>>> *S. Suhothayan* >>>>> Associate Director / Architect >>>>> *WSO2 Inc. *http://wso2.com >>>>> * <http://wso2.com/>* >>>>> lean . enterprise . middleware >>>>> >>>>> >>>>> *cell: (+94) 779 756 757 <+94%2077%20975%206757> | blog: >>>>> http://suhothayan.blogspot.com/ <http://suhothayan.blogspot.com/>twitter: >>>>> http://twitter.com/suhothayan <http://twitter.com/suhothayan> | linked-in: >>>>> http://lk.linkedin.com/in/suhothayan >>>>> <http://lk.linkedin.com/in/suhothayan>* >>>>> >>>> >>>> >>>> >>>> -- >>>> *Madhawa Vidanapathirana* >>>> Student >>>> Department of Computer Science and Engineering >>>> University of Moratuwa >>>> Sri Lanka >>>> >>>> Mobile: (+94) 716874425 <+94%2071%20687%204425> >>>> Email: madhawavidanapathir...@gmail.com >>>> Linked-In: https://lk.linkedin.com/in/madhawa-vidanapathirana-3430b94 >>>> >>> >>> >>> >>> -- >>> Grainier Perera >>> Software Engineer >>> Mobile : +94716122384 <+94%2071%20612%202384> >>> WSO2 Inc. | http://wso2.com >>> lean.enterprise.middleware >>> >> >> >> >> -- >> *Madhawa Vidanapathirana* >> Student >> Department of Computer Science and Engineering >> University of Moratuwa >> Sri Lanka >> >> Mobile: (+94) 716874425 <071%20687%204425> >> Email: madhawavidanapathir...@gmail.com >> Linked-In: https://lk.linkedin.com/in/madhawa-vidanapathirana-3430b94 >> > > > > -- > > *S. Suhothayan* > Associate Director / Architect > *WSO2 Inc. *http://wso2.com > * <http://wso2.com/>* > lean . enterprise . middleware > > > *cell: (+94) 779 756 757 <+94%2077%20975%206757> | blog: > http://suhothayan.blogspot.com/ <http://suhothayan.blogspot.com/>twitter: > http://twitter.com/suhothayan <http://twitter.com/suhothayan> | linked-in: > http://lk.linkedin.com/in/suhothayan <http://lk.linkedin.com/in/suhothayan>* > -- *Madhawa Vidanapathirana* Student Department of Computer Science and Engineering University of Moratuwa Sri Lanka Mobile: (+94) 716874425 Email: madhawavidanapathir...@gmail.com Linked-In: https://lk.linkedin.com/in/madhawa-vidanapathirana-3430b94
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