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Posted to dev@stratos.apache.org by David Sedarius <da...@gmail.com> on 2013/07/17 22:37:39 UTC
how the domain distribution is arranged
The video you've posted in the morning is very interesting and thank you
for that. I have a small question. if we are to deploy 100 domains how does
the distribution of these domains happen? Are you distributing them in
different VMs?
Re: how the domain distribution is arranged
Posted by Nirmal Fernando <ni...@gmail.com>.
Hi David,
I'm sorry for asking this, but what exactly you meant by a 'domain' here?
Did you mean something like "david.apache.stratos.com" ?
On Thu, Jul 18, 2013 at 5:11 AM, David Sedarius <da...@gmail.com>wrote:
> Thank you for the clarification. Seems I have more questions.
>
> is tenant == domain or are they two things?
>
And if my above assumption is correct, no these are not equal. I'll answer
your other questions ... once I get confirmed that both of us in the same
page.
>
> Its depending on the cartridges that going to be subscribed. Say if our
>> cartridge ( multi-tenant) can deploy 100 domain (tenants) then all domain
>> can use single VM. But depending on the load, It can horizontally
>> auto-scail in to many VM and load will distribute among those. If load
>> reduce then it will scail-down.
>>
>
> In this case all the domains are deployed in one VM and you will create
> multiple of this VM. But can one VM host 100 domains?
>
>
>>
>> If our cartridge is single tenant then 100 domain will distribute in 100
>> VMs. But in future we are going to improve this LXC support. Please see [1]
>> and [2] for more details
>>
>
> I don't quite understand what a cartridge is. Lets say I have 100
> domains/tenants with their own web apps. Each of these web apps require 2GB
> of memory to run in a single Java VM and there load can vary requiring
> horizontal scaling. What will be the setup in this case?
>
>
>>
>> [1]
>> http://mail-archives.apache.org/mod_mbox/stratos-dev/201307.mbox/raw/%3CCACNEwtOcgAMAREQ1E3wZ_AazKNbqG1A4e5hUg%3Di_o5isDWggSw%40mail.gmail.com%3E/2
>> [2]
>> http://mail-archives.apache.org/mod_mbox/stratos-dev/201307.mbox/raw/%3CCACNEwtOwDAT2%3DQ1YoTHGqaywnd2jjMsUReoM%3DipSzdeBZdoSNw%40mail.gmail.com%3E/2
>>
>> thanks
>>
>>
>> On Thu, Jul 18, 2013 at 2:07 AM, David Sedarius <david.sedarius@gmail.com
>> > wrote:
>>
>>> The video you've posted in the morning is very interesting and thank you
>>> for that. I have a small question. if we are to deploy 100 domains how does
>>> the distribution of these domains happen? Are you distributing them in
>>> different VMs?
>>>
>>>
>>>
>>
>>
>>
>> --
>> Lakmal Warusawithana
>> Software Architect; WSO2 Inc.
>> Mobile : +94714289692
>> Blog : http://lakmalsview.blogspot.com/
>>
>>
>
--
Best Regards,
Nirmal
C.S.Nirmal J. Fernando
Senior Software Engineer,
WSO2 Inc.
Blog: http://nirmalfdo.blogspot.com/
Re: how the domain distribution is arranged
Posted by Lakmal Warusawithana <la...@wso2.com>.
Hi David,
Its like this. When you setup/deploy Stratos you can set a domain name (if
this is private cloud they can choose their cloud domain name). Say
stratos.com. Then you can register cartridges to Stratos. When you register
you can give sub-domain for these cartridges. for a example you can
register ESB, AS ..etc then you can set sub-domain like bellow.
- ESB - esb.stratos.com
- AS - as.stratos.com
Now these cartridges are available for subscribe. Then subscriber can give
alias name for their subscription.
- If user subscribe to AS using alias name myappserver then his
cartridge can access by myappserver.as.stratos.com
- If user subscribe to ESB using alias name myesb then his cartridge can
access by myesb.esb.stratos.com
Likewise user can subscribe many times and urls are make by prefixing alias
to the define domains.
thanks
On Thu, Jul 18, 2013 at 7:04 PM, David Sedarius <da...@gmail.com>wrote:
> So If I subscribe to ESB, AS, Tomcat do I get 3 domains? I thought I only
> get one domain when I subscribe an organization and cartridges/services
> are sub domains/urls.
>
>
>
>
>
>
> On Thu, Jul 18, 2013 at 2:32 AM, Udara Liyanage <ud...@wso2.com> wrote:
>
>> Hi David,
>>
>> We can have multiple types of cartridges available in the system.
>>
>> Ex : ESB, AS, PHP, Tomcat, Mysql ...or a custom type of yours
>>
>> A tenant can subscribe to any of these.
>>
>> When he subscribe to one cartridge, he gets a domain for that
>> When he subscribe to another cartridge he gets another domain
>>
>> Likewise a single tenant can have multiple cartridges, so multiple
>> domains.
>> So a tenant is no the domain. In my feeling a domain is kind of a
>> reference to a subscription, may not be the exact definition.
>>
>>
>> On Thu, Jul 18, 2013 at 10:39 AM, Lakmal Warusawithana <la...@wso2.com>wrote:
>>
>>> Hi David,
>>>
>>>
>>> On Thu, Jul 18, 2013 at 8:41 AM, David Sedarius <
>>> david.sedarius@gmail.com> wrote:
>>>
>>>> Thank you for the clarification. Seems I have more questions.
>>>>
>>>> is tenant == domain or are they two things?
>>>>
>>>>
>>> Tenant can subscribe to many different cartridges. this subscription can
>>> be an application. I think you are referring domain is to this application.
>>>
>>>
>>>> Its depending on the cartridges that going to be subscribed. Say if
>>>>> our cartridge ( multi-tenant) can deploy 100 domain (tenants) then all
>>>>> domain can use single VM. But depending on the load, It can horizontally
>>>>> auto-scail in to many VM and load will distribute among those. If load
>>>>> reduce then it will scail-down.
>>>>>
>>>>
>>>> In this case all the domains are deployed in one VM and you will create
>>>> multiple of this VM. But can one VM host 100 domains?
>>>>
>>>
>>> Like I said earlier, its depend on the cartridge. For a example WSO2
>>> AppServer cartridge support multi-tenancy. That means single JVM can host
>>> multiple domains (application). It is sharing some resources but provide
>>> security isolation also. In that case we can configure AS cartridge to have
>>> 100 domains.
>>>
>>> If some domain (application) want to dedicated resources then they can
>>> subscribe to private jet cartridge, in that case it is separate VM.
>>>
>>>
>>>>
>>>>
>>>>>
>>>>> If our cartridge is single tenant then 100 domain will distribute in
>>>>> 100 VMs. But in future we are going to improve this LXC support. Please see
>>>>> [1] and [2] for more details
>>>>>
>>>>
>>>> I don't quite understand what a cartridge is. Lets say I have 100
>>>> domains/tenants with their own web apps. Each of these web apps require 2GB
>>>> of memory to run in a single Java VM and there load can vary requiring
>>>> horizontal scaling. What will be the setup in this case?
>>>>
>>>
>>> If you can deploy this application into multi-tenant cartridge then we
>>> can pack these application into single VM. If you want to give dedicated
>>> resource with 2GB memory you can use private jet cartridge.
>>>
>>>
>>> I hope you will get some idea. Please let us know any questions.
>>>
>>>
>>>>
>>>>
>>>>>
>>>>> [1]
>>>>> http://mail-archives.apache.org/mod_mbox/stratos-dev/201307.mbox/raw/%3CCACNEwtOcgAMAREQ1E3wZ_AazKNbqG1A4e5hUg%3Di_o5isDWggSw%40mail.gmail.com%3E/2
>>>>> [2]
>>>>> http://mail-archives.apache.org/mod_mbox/stratos-dev/201307.mbox/raw/%3CCACNEwtOwDAT2%3DQ1YoTHGqaywnd2jjMsUReoM%3DipSzdeBZdoSNw%40mail.gmail.com%3E/2
>>>>>
>>>>> thanks
>>>>>
>>>>>
>>>>> On Thu, Jul 18, 2013 at 2:07 AM, David Sedarius <
>>>>> david.sedarius@gmail.com> wrote:
>>>>>
>>>>>> The video you've posted in the morning is very interesting and thank
>>>>>> you for that. I have a small question. if we are to deploy 100 domains how
>>>>>> does the distribution of these domains happen? Are you distributing them in
>>>>>> different VMs?
>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> Lakmal Warusawithana
>>>>> Software Architect; WSO2 Inc.
>>>>> Mobile : +94714289692
>>>>> Blog : http://lakmalsview.blogspot.com/
>>>>>
>>>>>
>>>>
>>>
>>>
>>> --
>>> Lakmal Warusawithana
>>> Software Architect; WSO2 Inc.
>>> Mobile : +94714289692
>>> Blog : http://lakmalsview.blogspot.com/
>>>
>>>
>>
>>
>> --
>> Udara Liyanage
>> Software Engineer
>> WSO2, Inc.: http://wso2.com
>> lean. enterprise. middleware
>>
>> web: http://udaraliyanage.wordpress.com
>> phone: +94 71 443 6897
>>
>
>
--
Lakmal Warusawithana
Software Architect; WSO2 Inc.
Mobile : +94714289692
Blog : http://lakmalsview.blogspot.com/
Re: how the domain distribution is arranged
Posted by David Sedarius <da...@gmail.com>.
So If I subscribe to ESB, AS, Tomcat do I get 3 domains? I thought I only
get one domain when I subscribe an organization and cartridges/services
are sub domains/urls.
On Thu, Jul 18, 2013 at 2:32 AM, Udara Liyanage <ud...@wso2.com> wrote:
> Hi David,
>
> We can have multiple types of cartridges available in the system.
>
> Ex : ESB, AS, PHP, Tomcat, Mysql ...or a custom type of yours
>
> A tenant can subscribe to any of these.
>
> When he subscribe to one cartridge, he gets a domain for that
> When he subscribe to another cartridge he gets another domain
>
> Likewise a single tenant can have multiple cartridges, so multiple domains.
> So a tenant is no the domain. In my feeling a domain is kind of a
> reference to a subscription, may not be the exact definition.
>
>
> On Thu, Jul 18, 2013 at 10:39 AM, Lakmal Warusawithana <la...@wso2.com>wrote:
>
>> Hi David,
>>
>>
>> On Thu, Jul 18, 2013 at 8:41 AM, David Sedarius <david.sedarius@gmail.com
>> > wrote:
>>
>>> Thank you for the clarification. Seems I have more questions.
>>>
>>> is tenant == domain or are they two things?
>>>
>>>
>> Tenant can subscribe to many different cartridges. this subscription can
>> be an application. I think you are referring domain is to this application.
>>
>>
>>> Its depending on the cartridges that going to be subscribed. Say if
>>>> our cartridge ( multi-tenant) can deploy 100 domain (tenants) then all
>>>> domain can use single VM. But depending on the load, It can horizontally
>>>> auto-scail in to many VM and load will distribute among those. If load
>>>> reduce then it will scail-down.
>>>>
>>>
>>> In this case all the domains are deployed in one VM and you will create
>>> multiple of this VM. But can one VM host 100 domains?
>>>
>>
>> Like I said earlier, its depend on the cartridge. For a example WSO2
>> AppServer cartridge support multi-tenancy. That means single JVM can host
>> multiple domains (application). It is sharing some resources but provide
>> security isolation also. In that case we can configure AS cartridge to have
>> 100 domains.
>>
>> If some domain (application) want to dedicated resources then they can
>> subscribe to private jet cartridge, in that case it is separate VM.
>>
>>
>>>
>>>
>>>>
>>>> If our cartridge is single tenant then 100 domain will distribute in
>>>> 100 VMs. But in future we are going to improve this LXC support. Please see
>>>> [1] and [2] for more details
>>>>
>>>
>>> I don't quite understand what a cartridge is. Lets say I have 100
>>> domains/tenants with their own web apps. Each of these web apps require 2GB
>>> of memory to run in a single Java VM and there load can vary requiring
>>> horizontal scaling. What will be the setup in this case?
>>>
>>
>> If you can deploy this application into multi-tenant cartridge then we
>> can pack these application into single VM. If you want to give dedicated
>> resource with 2GB memory you can use private jet cartridge.
>>
>>
>> I hope you will get some idea. Please let us know any questions.
>>
>>
>>>
>>>
>>>>
>>>> [1]
>>>> http://mail-archives.apache.org/mod_mbox/stratos-dev/201307.mbox/raw/%3CCACNEwtOcgAMAREQ1E3wZ_AazKNbqG1A4e5hUg%3Di_o5isDWggSw%40mail.gmail.com%3E/2
>>>> [2]
>>>> http://mail-archives.apache.org/mod_mbox/stratos-dev/201307.mbox/raw/%3CCACNEwtOwDAT2%3DQ1YoTHGqaywnd2jjMsUReoM%3DipSzdeBZdoSNw%40mail.gmail.com%3E/2
>>>>
>>>> thanks
>>>>
>>>>
>>>> On Thu, Jul 18, 2013 at 2:07 AM, David Sedarius <
>>>> david.sedarius@gmail.com> wrote:
>>>>
>>>>> The video you've posted in the morning is very interesting and thank
>>>>> you for that. I have a small question. if we are to deploy 100 domains how
>>>>> does the distribution of these domains happen? Are you distributing them in
>>>>> different VMs?
>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>>
>>>> --
>>>> Lakmal Warusawithana
>>>> Software Architect; WSO2 Inc.
>>>> Mobile : +94714289692
>>>> Blog : http://lakmalsview.blogspot.com/
>>>>
>>>>
>>>
>>
>>
>> --
>> Lakmal Warusawithana
>> Software Architect; WSO2 Inc.
>> Mobile : +94714289692
>> Blog : http://lakmalsview.blogspot.com/
>>
>>
>
>
> --
> Udara Liyanage
> Software Engineer
> WSO2, Inc.: http://wso2.com
> lean. enterprise. middleware
>
> web: http://udaraliyanage.wordpress.com
> phone: +94 71 443 6897
>
Re: how the domain distribution is arranged
Posted by Udara Liyanage <ud...@wso2.com>.
Hi David,
We can have multiple types of cartridges available in the system.
Ex : ESB, AS, PHP, Tomcat, Mysql ...or a custom type of yours
A tenant can subscribe to any of these.
When he subscribe to one cartridge, he gets a domain for that
When he subscribe to another cartridge he gets another domain
Likewise a single tenant can have multiple cartridges, so multiple domains.
So a tenant is no the domain. In my feeling a domain is kind of a reference
to a subscription, may not be the exact definition.
On Thu, Jul 18, 2013 at 10:39 AM, Lakmal Warusawithana <la...@wso2.com>wrote:
> Hi David,
>
>
> On Thu, Jul 18, 2013 at 8:41 AM, David Sedarius <da...@gmail.com>wrote:
>
>> Thank you for the clarification. Seems I have more questions.
>>
>> is tenant == domain or are they two things?
>>
>>
> Tenant can subscribe to many different cartridges. this subscription can
> be an application. I think you are referring domain is to this application.
>
>
>> Its depending on the cartridges that going to be subscribed. Say if our
>>> cartridge ( multi-tenant) can deploy 100 domain (tenants) then all domain
>>> can use single VM. But depending on the load, It can horizontally
>>> auto-scail in to many VM and load will distribute among those. If load
>>> reduce then it will scail-down.
>>>
>>
>> In this case all the domains are deployed in one VM and you will create
>> multiple of this VM. But can one VM host 100 domains?
>>
>
> Like I said earlier, its depend on the cartridge. For a example WSO2
> AppServer cartridge support multi-tenancy. That means single JVM can host
> multiple domains (application). It is sharing some resources but provide
> security isolation also. In that case we can configure AS cartridge to have
> 100 domains.
>
> If some domain (application) want to dedicated resources then they can
> subscribe to private jet cartridge, in that case it is separate VM.
>
>
>>
>>
>>>
>>> If our cartridge is single tenant then 100 domain will distribute in 100
>>> VMs. But in future we are going to improve this LXC support. Please see [1]
>>> and [2] for more details
>>>
>>
>> I don't quite understand what a cartridge is. Lets say I have 100
>> domains/tenants with their own web apps. Each of these web apps require 2GB
>> of memory to run in a single Java VM and there load can vary requiring
>> horizontal scaling. What will be the setup in this case?
>>
>
> If you can deploy this application into multi-tenant cartridge then we can
> pack these application into single VM. If you want to give dedicated
> resource with 2GB memory you can use private jet cartridge.
>
>
> I hope you will get some idea. Please let us know any questions.
>
>
>>
>>
>>>
>>> [1]
>>> http://mail-archives.apache.org/mod_mbox/stratos-dev/201307.mbox/raw/%3CCACNEwtOcgAMAREQ1E3wZ_AazKNbqG1A4e5hUg%3Di_o5isDWggSw%40mail.gmail.com%3E/2
>>> [2]
>>> http://mail-archives.apache.org/mod_mbox/stratos-dev/201307.mbox/raw/%3CCACNEwtOwDAT2%3DQ1YoTHGqaywnd2jjMsUReoM%3DipSzdeBZdoSNw%40mail.gmail.com%3E/2
>>>
>>> thanks
>>>
>>>
>>> On Thu, Jul 18, 2013 at 2:07 AM, David Sedarius <
>>> david.sedarius@gmail.com> wrote:
>>>
>>>> The video you've posted in the morning is very interesting and thank
>>>> you for that. I have a small question. if we are to deploy 100 domains how
>>>> does the distribution of these domains happen? Are you distributing them in
>>>> different VMs?
>>>>
>>>>
>>>>
>>>
>>>
>>>
>>> --
>>> Lakmal Warusawithana
>>> Software Architect; WSO2 Inc.
>>> Mobile : +94714289692
>>> Blog : http://lakmalsview.blogspot.com/
>>>
>>>
>>
>
>
> --
> Lakmal Warusawithana
> Software Architect; WSO2 Inc.
> Mobile : +94714289692
> Blog : http://lakmalsview.blogspot.com/
>
>
--
Udara Liyanage
Software Engineer
WSO2, Inc.: http://wso2.com
lean. enterprise. middleware
web: http://udaraliyanage.wordpress.com
phone: +94 71 443 6897
Re: how the domain distribution is arranged
Posted by Lakmal Warusawithana <la...@wso2.com>.
Hi David,
On Thu, Jul 18, 2013 at 8:41 AM, David Sedarius <da...@gmail.com>wrote:
> Thank you for the clarification. Seems I have more questions.
>
> is tenant == domain or are they two things?
>
>
Tenant can subscribe to many different cartridges. this subscription can be
an application. I think you are referring domain is to this application.
> Its depending on the cartridges that going to be subscribed. Say if our
>> cartridge ( multi-tenant) can deploy 100 domain (tenants) then all domain
>> can use single VM. But depending on the load, It can horizontally
>> auto-scail in to many VM and load will distribute among those. If load
>> reduce then it will scail-down.
>>
>
> In this case all the domains are deployed in one VM and you will create
> multiple of this VM. But can one VM host 100 domains?
>
Like I said earlier, its depend on the cartridge. For a example WSO2
AppServer cartridge support multi-tenancy. That means single JVM can host
multiple domains (application). It is sharing some resources but provide
security isolation also. In that case we can configure AS cartridge to have
100 domains.
If some domain (application) want to dedicated resources then they can
subscribe to private jet cartridge, in that case it is separate VM.
>
>
>>
>> If our cartridge is single tenant then 100 domain will distribute in 100
>> VMs. But in future we are going to improve this LXC support. Please see [1]
>> and [2] for more details
>>
>
> I don't quite understand what a cartridge is. Lets say I have 100
> domains/tenants with their own web apps. Each of these web apps require 2GB
> of memory to run in a single Java VM and there load can vary requiring
> horizontal scaling. What will be the setup in this case?
>
If you can deploy this application into multi-tenant cartridge then we can
pack these application into single VM. If you want to give dedicated
resource with 2GB memory you can use private jet cartridge.
I hope you will get some idea. Please let us know any questions.
>
>
>>
>> [1]
>> http://mail-archives.apache.org/mod_mbox/stratos-dev/201307.mbox/raw/%3CCACNEwtOcgAMAREQ1E3wZ_AazKNbqG1A4e5hUg%3Di_o5isDWggSw%40mail.gmail.com%3E/2
>> [2]
>> http://mail-archives.apache.org/mod_mbox/stratos-dev/201307.mbox/raw/%3CCACNEwtOwDAT2%3DQ1YoTHGqaywnd2jjMsUReoM%3DipSzdeBZdoSNw%40mail.gmail.com%3E/2
>>
>> thanks
>>
>>
>> On Thu, Jul 18, 2013 at 2:07 AM, David Sedarius <david.sedarius@gmail.com
>> > wrote:
>>
>>> The video you've posted in the morning is very interesting and thank you
>>> for that. I have a small question. if we are to deploy 100 domains how does
>>> the distribution of these domains happen? Are you distributing them in
>>> different VMs?
>>>
>>>
>>>
>>
>>
>>
>> --
>> Lakmal Warusawithana
>> Software Architect; WSO2 Inc.
>> Mobile : +94714289692
>> Blog : http://lakmalsview.blogspot.com/
>>
>>
>
--
Lakmal Warusawithana
Software Architect; WSO2 Inc.
Mobile : +94714289692
Blog : http://lakmalsview.blogspot.com/
Re: how the domain distribution is arranged
Posted by David Sedarius <da...@gmail.com>.
Thank you for the clarification. Seems I have more questions.
is tenant == domain or are they two things?
Its depending on the cartridges that going to be subscribed. Say if our
> cartridge ( multi-tenant) can deploy 100 domain (tenants) then all domain
> can use single VM. But depending on the load, It can horizontally
> auto-scail in to many VM and load will distribute among those. If load
> reduce then it will scail-down.
>
In this case all the domains are deployed in one VM and you will create
multiple of this VM. But can one VM host 100 domains?
>
> If our cartridge is single tenant then 100 domain will distribute in 100
> VMs. But in future we are going to improve this LXC support. Please see [1]
> and [2] for more details
>
I don't quite understand what a cartridge is. Lets say I have 100
domains/tenants with their own web apps. Each of these web apps require 2GB
of memory to run in a single Java VM and there load can vary requiring
horizontal scaling. What will be the setup in this case?
>
> [1]
> http://mail-archives.apache.org/mod_mbox/stratos-dev/201307.mbox/raw/%3CCACNEwtOcgAMAREQ1E3wZ_AazKNbqG1A4e5hUg%3Di_o5isDWggSw%40mail.gmail.com%3E/2
> [2]
> http://mail-archives.apache.org/mod_mbox/stratos-dev/201307.mbox/raw/%3CCACNEwtOwDAT2%3DQ1YoTHGqaywnd2jjMsUReoM%3DipSzdeBZdoSNw%40mail.gmail.com%3E/2
>
> thanks
>
>
> On Thu, Jul 18, 2013 at 2:07 AM, David Sedarius <da...@gmail.com>wrote:
>
>> The video you've posted in the morning is very interesting and thank you
>> for that. I have a small question. if we are to deploy 100 domains how does
>> the distribution of these domains happen? Are you distributing them in
>> different VMs?
>>
>>
>>
>
>
>
> --
> Lakmal Warusawithana
> Software Architect; WSO2 Inc.
> Mobile : +94714289692
> Blog : http://lakmalsview.blogspot.com/
>
>
Re: how the domain distribution is arranged
Posted by Lakmal Warusawithana <la...@wso2.com>.
Hi David,
Its depending on the cartridges that going to be subscribed. Say if our
cartridge ( multi-tenant) can deploy 100 domain (tenants) then all domain
can use single VM. But depending on the load, It can horizontally
auto-scail in to many VM and load will distribute among those. If load
reduce then it will scail-down.
If our cartridge is single tenant then 100 domain will distribute in 100
VMs. But in future we are going to improve this LXC support. Please see [1]
and [2] for more details
[1]
http://mail-archives.apache.org/mod_mbox/stratos-dev/201307.mbox/raw/%3CCACNEwtOcgAMAREQ1E3wZ_AazKNbqG1A4e5hUg%3Di_o5isDWggSw%40mail.gmail.com%3E/2
[2]
http://mail-archives.apache.org/mod_mbox/stratos-dev/201307.mbox/raw/%3CCACNEwtOwDAT2%3DQ1YoTHGqaywnd2jjMsUReoM%3DipSzdeBZdoSNw%40mail.gmail.com%3E/2
thanks
On Thu, Jul 18, 2013 at 2:07 AM, David Sedarius <da...@gmail.com>wrote:
> The video you've posted in the morning is very interesting and thank you
> for that. I have a small question. if we are to deploy 100 domains how does
> the distribution of these domains happen? Are you distributing them in
> different VMs?
>
>
>
--
Lakmal Warusawithana
Software Architect; WSO2 Inc.
Mobile : +94714289692
Blog : http://lakmalsview.blogspot.com/