Hi Jean and all, I have submitted a patch to JIRA issues for Message Queue Component for Nuvem and I would like to receive any comments regarding that. Also I would like to know whether it is alright to submit my mid-term evaluation to melange now.
Thanks On Tue, Jul 10, 2012 at 1:24 PM, Dulini Atapattu <[email protected]> wrote: > Hi Jean and all, > > I have implemented the nuvem-api for message queue component including the > interface and other related classes. The api interface is as follows: > > public QueueMessageHandle sendMessage(QueueMessage queueMessage) throws > MessageQueueServiceException; > (Sends the queueMessage and returns a handle to the sent message) > > public List<QueueMessage> receiveMessage(int numMessages) throws > MessageQueueServiceException; > (Receives the number of messages specified by numMessages from the queue > service and returns a list of queue messages) > > public boolean deleteMessage(QueueMessage queueMessage) throws > MessageQueueServiceException; > (Deletes the message specified by the queueMessage and returns true if > deletion is successful) > > I also have implemented this interface for Amazon platform, tested with > test cases using the account I have created in Amazon Free Usage Tier [14], > and also documented the code. I also have submitted the patch for this work > at Nuvem JIRA issues [15]. > > I have also implemented the interface for GAE (using Pull Queue) and > currently I am performing the tests for the implementation. > > I would like to receive any comments about the work I have done so far. > > Thanks > > [14] - http://aws.amazon.com/free/ > [15] - https://issues.apache.org/jira/browse/NUVEM-14 > > > > On Sat, Jul 7, 2012 at 9:41 AM, Sagara Gunathunga < > [email protected]> wrote: > >> On Sat, May 19, 2012 at 12:36 AM, Dulini Atapattu <[email protected]> >> wrote: >> > Hi Sagara, >> > >> > Thank you very much for the comments you have mentioned and they are a >> lot >> > helpful to get done the required tasks appropriately and relevantly. >> > >> > I will focus on the activities, queue services and solutions to issues >> you >> > have mentioned and will provide the community the API design according >> to >> > the requirements you have mentioned. >> > >> > I added approximate completion dates to my project proposal and they >> are as >> > follows: >> > >> > >> > - 24th April - 20th May >> > >> > Read about the Apache Qpid, Amazon SQS, Azure Message Queue REST API >> > and3rd party queue frameworks which based on App Engine menarche API >> > (24th >> > April - 30th April). >> > >> > Define the Nuvem message queue API. Discuss with Nuvem community about >> the >> > design of the API and scope of the project (1st May - 20th May). >> > >> > - 21st May - 12th July >> > >> > Implement above Message Queue API using GAE (21st May to 11th June). >> > >> > Implement above Message Queue API using Amazon (12th June to 03rd July). >> > >> > Preparing for the mid-term evaluation of the project (4th July to 12th >> > July). >> >> Hi Dulini, >> >> We are reaching to mid term evaluation very soon. I would like to see >> codes related to above tasks either on SVN or JIRA, those codes are >> important to measure project progress for mid term evaluation. >> >> I believe Jean will help out to bring your codes to SVN. >> >> Thanks ! >> >> >> > >> > >> > >> > - 13th July - 12th August >> > >> > Implement Queue API using Apache QPID (13th July - 27th July). >> > >> > Implement simple application to demonstrate the Nuvem Message Queue API >> > (28th July - 6th August). >> > >> > Completing the documentation and test cases (7th August - 12th >> > August). >> > >> > >> > >> > - August 16th - August 23rd >> > >> > Prepare the deliverables for final submission. >> > >> > Thank you, >> > Best regards >> > >> > On Fri, May 18, 2012 at 2:19 PM, Sagara Gunathunga < >> > [email protected]> wrote: >> > >> >> Please find my in-line answers. >> >> >> >> On Fri, May 18, 2012 at 12:46 PM, Dulini Atapattu <[email protected] >> >> >wrote: >> >> >> >> > Hi Jean and all, >> >> > >> >> > With related to the project: Message Queue component for Nuvem, so >> far I >> >> > read about AmasonSQS, Azure Queue Service Rest API, MemcacheQ, >> Sparrow >> >> and >> >> > Depcached. According to details and APIs related to these queue >> services/ >> >> > frameworks, all the queue services provide send message and receive >> >> message >> >> > functionality with related to a specified queue, and only some queue >> >> > services/ frameworks provide other related services such as creating >> >> > queues, deleting messages etc. >> >> > >> >> >> >> Sound good but you don't need to support all of above services. You >> can >> >> pick around 4 widely used services here because for all those >> >> implementations you have to perform following activities. >> >> >> >> 1.) Implement X queue service for Nuvem Queue API. >> >> 2.) Provide full set of unit tests for X implantation. >> >> 3.) Provide documentation how to configure X queue service with Nuvem >> API >> >> and may be samples as well. >> >> >> >> Personally I believe following 3 services need to be included within >> the >> >> scope of your project. >> >> >> >> 1.) Amazon SQS >> >> 2.) GAE (MemcacheQ) >> >> 3.) Nuvem specific implementation ( ActiveMQ ?) >> >> >> >> >> >> Before you start you may have to find solutions for following issues >> >> >> >> * How to test AmasonSQS on Amazon platform. In last year student who >> did >> >> key-value component created a Amazon account for him AFAIK it's free >> for >> >> one year time. You may do the same or can find any alternative ?. >> >> >> >> * Is that MemcacheQ licence compliant with Apache ? >> >> >> >> * Still you haven't focus on Nuvem specific implementation , this also >> a >> >> very important component. >> >> >> >> >> >> >> >> > >> >> > Therefore I came up with the following design/ interface for the >> message >> >> > queue component, which provides the user the basic two >> functionalities >> >> > provided by any queue services, and the implementation of this >> interface >> >> > may call other relevant functionalities relevantly according to the >> queue >> >> > service being used and as required: >> >> > >> >> > putMessage(queueName, messageBody); >> >> > >> >> > getMessage(queueName); >> >> > >> >> >> >> This API is not sufficient for enterprise applications. For example >> it's >> >> mandatory to create and delete queues regardless of underline service >> >> provider. If the specific service provider does not support for a >> >> particular method you need to come up with solution or can throw >> >> unsupported exception. Refer the last year key-value project it has >> lot of >> >> tips to overcome such limitations. >> >> >> >> >> >> IMO we need to support following activities. >> >> >> >> 1.) create queue , delete queue , list all queues, clear queue ( >> remove >> >> all message on queue) >> >> 2.) send message , receive message, delete message >> >> 3.) what else ..? >> >> >> >> >> >> > >> >> > The getMessage should return the message which is consumed by the >> queue. >> >> > Also message deletion tasks etc. should be performed inside the >> >> > implementation of getMessage. >> >> > >> >> > Also I would like to use MemcacheQ as the 3rd party queue framework >> for >> >> > GAE, and I would like to know the feedback of the community regarding >> >> this >> >> > choice. >> >> > >> >> > Also I would like to know the feedback about the API I have come up >> with. >> >> > >> >> >> >> It seems my comments on Google Melange have been ignored, in there I >> asked >> >> realistic breakdown of project according to allocated time with task. >> You >> >> have to provide schedule for this project. what I mean here is >> something >> >> similar to below. >> >> >> >> Define API - estimated complete date >> >> Amazon SQS - estimated complete date >> >> GAE (MemcacheQ) - estimated complete date >> >> Nuvem specific implementation without any of above ( ActiveMQ ?) - >> >> estimated complete date >> >> >> >> These dates are flexible and not like deadlines but we need some kind >> of a >> >> schedule to monitor your progress. It would be an advantage to you to >> >> complete at least 1 or 2 services before the mid-term evaluation. >> >> >> >> Thanks ! >> >> >> >> >> >> > >> >> > Thank you, >> >> > Best regards >> >> > >> >> > On Thu, Apr 26, 2012 at 3:46 AM, Dulini Atapattu <[email protected] >> > >> >> > wrote: >> >> > >> >> > > Hi all, >> >> > > >> >> > > As my proposal for Message Queue component for Nuvem is being >> accepted >> >> > for >> >> > > GSOC 2012 >> >> > > i would like to continue my work with the project and to achieve >> the >> >> > goals >> >> > > stated. >> >> > > I will be starting work with reading about the Apache Qpid, Amazon >> SQS, >> >> > Azure >> >> > > Message Queue REST API and 3rd party queue frameworks that are >> based on >> >> > > App Engine menarche API and defining the Nuvem message queue API. >> >> > > >> >> > > Thank you >> >> > > -- >> >> > > Dulini I Atapattu >> >> > > Look around... <http://www.flickr.com/photos/dia1988> >> >> > > >> >> > > >> >> > >> >> > >> >> > -- >> >> > Dulini I Atapattu >> >> > Look around... <http://www.flickr.com/photos/dia1988> >> >> > >> >> >> >> >> >> >> >> -- >> >> Sagara Gunathunga >> >> >> >> Blog - http://ssagara.blogspot.com >> >> Web - http://people.apache.org/~sagara/ >> >> LinkedIn - http://www.linkedin.com/in/ssagara >> >> >> > >> > >> > >> > -- >> > Dulini I Atapattu >> > Look around... <http://www.flickr.com/photos/dia1988> >> >> >> >> -- >> Sagara Gunathunga >> >> Blog - http://ssagara.blogspot.com >> Web - http://people.apache.org/~sagara/ >> LinkedIn - http://www.linkedin.com/in/ssagara >> > > > > -- > Dulini I Atapattu > Look around... <http://www.flickr.com/photos/dia1988> > > -- Dulini I Atapattu Look around... <http://www.flickr.com/photos/dia1988>
