Can someone clarify? I'm lost but I really don't understand why we are creating any other approach than task server. It is the only approach that scales clearly. Is our task server code too heavyweight?
Paul On 5 April 2014 08:47, Chanaka Fernando <chana...@wso2.com> wrote: > Hi Kasun/Anjana, > > I think what Anjana mentioned and Ishan mentioned are somewhat converge to > same idea (even though they looks different). > > What we have discussed and agreed was that we are developing a separate > carbon-component which is used for executing the ntask component. Since we > need a common interface to support both the existing quartz based > synapse-tasks implementation and the ntask component, we have defined the > TaskManager interface. > > When ESB is loading the synapse configuration, it will create an object of > type TaskManager according to the Task provider mentioned in the > configuration. This task manager object will delegate the scheduling and > other task related stuff to the respective implementation of the > TaskManager (which can be either QuartzTaskManager or NTaskManager). > > @Kasun/Anjana: are we missing something here? > > > Thanks, > Chanaka > > > On Sat, Apr 5, 2014 at 9:32 AM, Kasun Indrasiri <ka...@wso2.com> wrote: > >> >> >> >> On Sat, Apr 5, 2014 at 9:22 AM, Anjana Fernando <anj...@wso2.com> wrote: >> >>> Hi Ishan, >>> >>> On Sat, Apr 5, 2014 at 7:33 AM, Ishan Jayawardena <is...@wso2.com>wrote: >>> >>>> Currently, we have developed following design and started to work on it. >>>> >>>> Synapse will have defined the TaskManager, and Task interfaces whose >>>> implementations will provide the concrete tasks and management of those >>>> tasks depending on the scheduler(ie quartz or ntask). >>>> For instance, for inbuilt quartz based task scheduling, we >>>> will refactor and develop a quartz task manager, and a task type while >>>> maintaining the compatibility with existing tasks. >>>> Additionally, we are developing an ntask based task manager. >>>> >>>> We will introduce the following new element to synapse.xml that >>>> provides the class name of the TaskManager implementation so that Synapse >>>> can create a single task manger object when it starts up. >>>> <definitions xmlns="http://ws.apache.org/ns/synapse";> >>>> <taskExecutor provider="org.apache.synapse.task.NTaskTaskManager"/> >>>> </definitions> >>>> >>> >>> I guess the NTask based task manager implementation should have a WSO2 >>> package name, since it is a WSO2 specific implementation, and something you >>> will not ship with Synapse. >>> >>> Exactly. >> I've mentioned this several times in our offline discussions as well.. >> Why are putting a dependency from synapse to a WSO2 component? Again... >> have a look at how we have integrated synapse registry with WSO2 registry. >> This must be implemented as a carbon component. >> >> Cheers, >>> Anjana. >>> >>> >>>> >>>> The class name of the Task implementation can be obtained at the time >>>> the user adds a new task through the UI. By using that class name, >>>> Synapse can create the task object, initialize it and hand it over to the >>>> task manager instance to schedule. >>>> >>>> Thanks, >>>> Ishan. >>>> >>>> >>>> >>>> On Mon, Mar 24, 2014 at 8:23 PM, Isuru Udana <isu...@wso2.com> wrote: >>>> >>>>> >>>>> >>>>> >>>>> On Mon, Mar 24, 2014 at 8:04 PM, Sagara Gunathunga <sag...@wso2.com>wrote: >>>>> >>>>>> >>>>>> >>>>>> >>>>>> On Mon, Mar 24, 2014 at 11:52 AM, Kasun Indrasiri <ka...@wso2.com>wrote: >>>>>> >>>>>>> I would like to clarify the objective of this task: >>>>>>> >>>>>>> - Introduce the concept of a Task provider in to ESB. Which means >>>>>>> any existing task (task config) can be ran on the available task >>>>>>> provider( >>>>>>> this can be ntask, quartz or anything) >>>>>>> >>>>>> >>>>>> Is this means we continue to support Quartz as well ? >>>>>> >>>>> Yes. Idea is to introduce an interface at the synapse level which >>>>> providers can implement. Quartz based implementation is one of the >>>>> possible >>>>> task provider implementation. >>>>> >>>>>> IMO for simple use cases it's important to continue support for >>>>>> Quartz while Task server may fit into complex use cases. >>>>>> >>>>>> Thanks ! >>>>>> >>>>>> >>>>>>> - However, the recipes concept is completely transparent at Synapse >>>>>>> level. Simply we don't have to thing about recipes when doing this. >>>>>>> Recipe(or Dish) can be consider as a place where specific logic is >>>>>>> executed >>>>>>> on top of generic task. >>>>>>> - All the details on sequence deployment, template invocation is not >>>>>>> related to ESB task provider concept. >>>>>>> >>>>>>> >>>>>>> On Sat, Mar 22, 2014 at 7:36 AM, Ishan Jayawardena >>>>>>> <is...@wso2.com>wrote: >>>>>>> >>>>>>>> I am working on $subject to support scheduled invocation of recipes >>>>>>>> in the ESB. This mainly includes replacing the existing quartz based >>>>>>>> task >>>>>>>> scheduler with ntask scheduler. The new task type is based on ntask, >>>>>>>> and it >>>>>>>> will be added as a new component in the mediation category. We can use >>>>>>>> the >>>>>>>> existing task management UI of the ESB to add and manage tasks. >>>>>>>> >>>>>>>> In addition to the task schedule information, template name and >>>>>>>> template parameter values, a special property must be added to the task >>>>>>>> parameter list at the time of task creation so that the task can >>>>>>>> invoke the >>>>>>>> template within its execute method. >>>>>>>> >>>>>>>> The task, >>>>>>>> reads properties and builds a synapse sequence by inserting >>>>>>>> the recipe template in it, >>>>>>>> deploys the sequence into synapse, >>>>>>>> injects a message to the above sequence to invoke the template. >>>>>>>> >>>>>>>> Thanks, >>>>>>>> Ishan. >>>>>>>> >>>>>>>> -- >>>>>>>> Ishan Jayawardena >>>>>>>> Senior Software Engineer >>>>>>>> Mobile: +94 (77) 408 2330 >>>>>>>> >>>>>>>> _______________________________________________ >>>>>>>> Architecture mailing list >>>>>>>> Architecture@wso2.org >>>>>>>> https://mail.wso2.org/cgi-bin/mailman/listinfo/architecture >>>>>>>> >>>>>>>> >>>>>>> >>>>>>> >>>>>>> -- >>>>>>> Kasun Indrasiri >>>>>>> Software Architect >>>>>>> WSO2, Inc.; http://wso2.com >>>>>>> lean.enterprise.middleware >>>>>>> >>>>>>> cell: +94 77 556 5206 >>>>>>> Blog : http://kasunpanorama.blogspot.com/ >>>>>>> >>>>>>> _______________________________________________ >>>>>>> Architecture mailing list >>>>>>> Architecture@wso2.org >>>>>>> https://mail.wso2.org/cgi-bin/mailman/listinfo/architecture >>>>>>> >>>>>>> >>>>>> >>>>>> >>>>>> -- >>>>>> Sagara Gunathunga >>>>>> >>>>>> Senior Technical Lead; WSO2, Inc.; http://wso2.com >>>>>> V.P Apache Web Services; http://ws.apache.org/ >>>>>> Linkedin; http://www.linkedin.com/in/ssagara >>>>>> Blog ; http://ssagara.blogspot.com >>>>>> >>>>>> >>>>> >>>>> >>>>> -- >>>>> *Isuru Udana* >>>>> Senior >>>>> * Software Engineer* >>>>> WSO2 Inc.; http://wso2.com >>>>> email: isu...@wso2.com cell: +94 77 3791887 >>>>> blog: http://mytecheye.blogspot.com/ >>>>> twitter: http://twitter.com/isudana >>>>> >>>>> _______________________________________________ >>>>> Architecture mailing list >>>>> Architecture@wso2.org >>>>> https://mail.wso2.org/cgi-bin/mailman/listinfo/architecture >>>>> >>>>> >>>> >>>> >>>> -- >>>> Ishan Jayawardena >>>> Senior Software Engineer >>>> Mobile: +94 (77) 408 2330 >>>> >>>> _______________________________________________ >>>> Architecture mailing list >>>> Architecture@wso2.org >>>> https://mail.wso2.org/cgi-bin/mailman/listinfo/architecture >>>> >>>> >>> >>> >>> -- >>> *Anjana Fernando* >>> Technical Lead >>> WSO2 Inc. | http://wso2.com >>> lean . enterprise . middleware >>> >>> _______________________________________________ >>> Architecture mailing list >>> Architecture@wso2.org >>> https://mail.wso2.org/cgi-bin/mailman/listinfo/architecture >>> >>> >> >> >> -- >> Kasun Indrasiri >> Software Architect >> WSO2, Inc.; http://wso2.com >> lean.enterprise.middleware >> >> cell: +94 77 556 5206 >> Blog : http://kasunpanorama.blogspot.com/ >> > > > > -- > -- > Chanaka Fernando > > Technical Lead > WSO2, Inc.; http://wso2.com > lean.enterprise.middleware > > mobile: +94 773337238 > Blog : http://soatutorials.blogspot.com > LinkedIn:http://www.linkedin.com/pub/chanaka-fernando/19/a20/5b0 > Twitter:https://twitter.com/chanakaudaya > Wordpress:http://chanakaudaya.wordpress.com > > > > > _______________________________________________ > Architecture mailing list > Architecture@wso2.org > https://mail.wso2.org/cgi-bin/mailman/listinfo/architecture > > -- Paul Fremantle CTO and Co-Founder, WSO2 OASIS WS-RX TC Co-chair, Apache Member UK: +44 207 096 0336 US: +1 646 595 7614 blog: http://pzf.fremantle.org twitter.com/pzfreo p...@wso2.com wso2.com Lean Enterprise Middleware Disclaimer: This communication may contain privileged or other confidential information and is intended exclusively for the addressee/s. 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