You are viewing a plain text version of this content. The canonical link for it is here.
Posted to user@synapse.apache.org by spayasam <Sh...@gmail.com> on 2011/12/16 23:47:09 UTC
New To Synapse
Hello All
I've started learning Synapse very recently.
What I am tasked with doing is invoking a web service from synapse every 60
secs and check if there is data in the database. I was able to do this using
the . But I'm not sure how to specify the method of the web service that
needs to be invoked and how to pass the request payload to the web service
method.
Can some one please advise or point me to the specific sample provided in
Synapse? I've hunted the samples but didn't get one similar to this. not
sure if i'm missing something
Thanks
Shravan
--
View this message in context: http://old.nabble.com/New-To-Synapse-tp32989484p32989484.html
Sent from the Synapse - User mailing list archive at Nabble.com.
Re: New To Synapse
Posted by spayasam <Sh...@gmail.com>.
Great. Thanks , that explains it.
Have a nice day!
Shravan
Sadeep Jayasumana-2 wrote:
>
> Hi,
>
> On Wed, Dec 21, 2011 at 5:27 AM, spayasam <Sh...@gmail.com>
> wrote:
>
>>
>> Thank you very much Sadeep and Hiranya for your help/advise. This is now
>> working.
>>
>> However, when I saw the callout mediator documentation in the
>> configuration
>> language page - it says -
>>
>> "As the callout mediator performs a blocking call, it cannot use the
>> default
>> non-blocking http/s transports based on Java NIO, and thus defaults to
>> using
>> the samples/axis2Client/client_repo/conf/axis2.xml as the Axis2
>> configuration, and samples/axis2Client/client_repo as the client
>> repository
>> unless these are specified separately"
>>
>
> By default, Synapse uses HTTP/S NIO transports which are based on Java NIO
> [1]. This transport is inherently asynchronous and can handle a large
> number of HTTP communications with a limited number of threads. Hence it
> is particularly useful in high load/concurrency scenarios.
>
> Callout mediator does not use this asynchronous, non-blocking HTTP NIO
> transport while sending messages out, instead it uses a synchronous,
> blocking HTTP transport. Meaning, callout mediator still communicates over
> HTTP although its not based on NIO. Whether a particular transport uses
> NIO
> or not is an implementation detail and should not concern the end user
> unless he is dealing with very high loads/concurrency levels.
>
> [1] http://docs.oracle.com/javase/6/docs/api/java/nio/package-summary.html
>
> Thanks,
> Sadeep
>
>
>>
>> Not sure if I'm misinterpreting something here. Can you please clarify?
>>
>> Thanks
>> Shravan
>>
>>
>>
>> Sadeep Jayasumana-2 wrote:
>> >
>> > Hi,
>> >
>> > On Tue, Dec 20, 2011 at 1:39 AM, spayasam wrote:
>> >
>> >>
>> >> Thanks a lot. I figured that out, however I'm stuck with invoking the
>> web
>> >> service now.
>> >>
>> >> When we invoke a web service using mediator, it does a non-blocking
>> >> invoke
>> >> of the external service since we use HTTP transport. Because of this
>> >> non-blocking invocation, the web service response is received at a
>> >> latertime. What is the synapse configuration element where the web
>> >> service
>> >> response can be received and processed in a synchronized fashion?
>> >>
>> >
>> > Synapse's callout mediator can be used to invoke a web service
>> > synchronously over HTTP. Please have a look at the callout mediator
>> sample
>> > [1].
>> >
>> > [1] http://synapse.apache.org/Synapse_Samples.html#Callout
>> >
>> > Thanks,
>> > Sadeep
>> >
>> > I’ve tried using mediator which does a blocking web service call but
>> it
>> >> can’t invoke the web service over HTTP transport.
>> >>
>> >> Can you please help?
>> >>
>> >> A chunck of the configuration from my synapse.xml looks like the one
>> >> below:
>> >>
>> >>
>> >>
>> ---------------------------------------------------------------------------------------------------
>> >>
>> >>
>> >>
>> >>
>> >>
>> >>
>> >>
>> >>
>> >>
>> >>
>> >>
>> >>
>> >>
>> >>
>> >>
>> >>
>> >>
>> >>
>> >>
>> >>
>> >>
>> >>
>> >>
>> >>
>> >>
>> >>
>> >>
>> >>
>> >>
>> >>
>> >>
>> >>
>> >>
>> >>
>> >>
>> >>
>> >>
>> >>
>> >>
>> >>
>> >>
>> ---------------------------------------------------------------------------------------------------
>> >>
>> >>
>> >>
>> >> Hiranya Jayathilaka-3 wrote:
>> >> >
>> >> > Sample 300 should have the info you're looking for. Note how the
>> >> message
>> >> > payload and SOAP action has been set as properties:
>> >> >
>> >> > http://synapse.apache.org/Synapse_Samples.html#Sample300
>> >> >
>> >> > Thanks,
>> >> > Hiranya
>> >> >
>> >> > On Sat, Dec 17, 2011 at 4:30 AM, spayasam wrote:
>> >> >
>> >> >>
>> >> >> Hello All
>> >> >> I've started learning Synapse very recently.
>> >> >>
>> >> >> What I am tasked with doing is invoking a web service from synapse
>> >> every
>> >> >> 60
>> >> >> secs and check if there is data in the database. I was able to do
>> this
>> >> >> using
>> >> >> the . But I'm not sure how to specify the method of the web service
>> >> that
>> >> >> needs to be invoked and how to pass the request payload to the web
>> >> >> service
>> >> >> method.
>> >> >>
>> >> >> Can some one please advise or point me to the specific sample
>> provided
>> >> in
>> >> >> Synapse? I've hunted the samples but didn't get one similar to
>> this.
>> >> not
>> >> >> sure if i'm missing something
>> >> >>
>> >> >> Thanks
>> >> >> Shravan
>> >> >> --
>> >> >> View this message in context:
>> >> >> http://old.nabble.com/New-To-Synapse-tp32989507p32989507.html
>> >> >> Sent from the Synapse - User mailing list archive at Nabble.com.
>> >> >>
>> >> >
>> >> >
>> >> >
>> >> > --
>> >> > Hiranya Jayathilaka
>> >> > Associate Technical Lead;
>> >> > WSO2 Inc.; http://wso2.org
>> >> > E-mail: hiranya@wso2.com; Mobile: +94 77 633 3491
>> >> > Blog: http://techfeast-hiranya.blogspot.com
>> >> >
>> >> >
>> >>
>> >> --
>> >> View this message in context:
>> >> http://old.nabble.com/New-To-Synapse-tp32989484p33005239.html
>> >> Sent from the Synapse - User mailing list archive at Nabble.com.
>> >>
>> >
>> >
>> >
>> > --
>> >
>> > Sadeep Jayasumana****
>> >
>> > Email: gayansadeep@gmail.com****
>> >
>> > Phone: +94-77-2266507
>> >
>> >
>>
>> --
>> View this message in context:
>> http://old.nabble.com/New-To-Synapse-tp32989484p33013286.html
>> Sent from the Synapse - User mailing list archive at Nabble.com.
>>
>
>
>
> --
>
> Sadeep Jayasumana****
>
> Email: gayansadeep@gmail.com****
>
> Phone: +94-77-2266507
>
>
--
View this message in context: http://old.nabble.com/New-To-Synapse-tp32989484p33014427.html
Sent from the Synapse - User mailing list archive at Nabble.com.
Re: New To Synapse
Posted by Sadeep Jayasumana <ga...@gmail.com>.
Hi,
On Wed, Dec 21, 2011 at 5:27 AM, spayasam <Sh...@gmail.com> wrote:
>
> Thank you very much Sadeep and Hiranya for your help/advise. This is now
> working.
>
> However, when I saw the callout mediator documentation in the configuration
> language page - it says -
>
> "As the callout mediator performs a blocking call, it cannot use the
> default
> non-blocking http/s transports based on Java NIO, and thus defaults to
> using
> the samples/axis2Client/client_repo/conf/axis2.xml as the Axis2
> configuration, and samples/axis2Client/client_repo as the client repository
> unless these are specified separately"
>
By default, Synapse uses HTTP/S NIO transports which are based on Java NIO
[1]. This transport is inherently asynchronous and can handle a large
number of HTTP communications with a limited number of threads. Hence it
is particularly useful in high load/concurrency scenarios.
Callout mediator does not use this asynchronous, non-blocking HTTP NIO
transport while sending messages out, instead it uses a synchronous,
blocking HTTP transport. Meaning, callout mediator still communicates over
HTTP although its not based on NIO. Whether a particular transport uses NIO
or not is an implementation detail and should not concern the end user
unless he is dealing with very high loads/concurrency levels.
[1] http://docs.oracle.com/javase/6/docs/api/java/nio/package-summary.html
Thanks,
Sadeep
>
> Not sure if I'm misinterpreting something here. Can you please clarify?
>
> Thanks
> Shravan
>
>
>
> Sadeep Jayasumana-2 wrote:
> >
> > Hi,
> >
> > On Tue, Dec 20, 2011 at 1:39 AM, spayasam wrote:
> >
> >>
> >> Thanks a lot. I figured that out, however I'm stuck with invoking the
> web
> >> service now.
> >>
> >> When we invoke a web service using mediator, it does a non-blocking
> >> invoke
> >> of the external service since we use HTTP transport. Because of this
> >> non-blocking invocation, the web service response is received at a
> >> latertime. What is the synapse configuration element where the web
> >> service
> >> response can be received and processed in a synchronized fashion?
> >>
> >
> > Synapse's callout mediator can be used to invoke a web service
> > synchronously over HTTP. Please have a look at the callout mediator
> sample
> > [1].
> >
> > [1] http://synapse.apache.org/Synapse_Samples.html#Callout
> >
> > Thanks,
> > Sadeep
> >
> > I’ve tried using mediator which does a blocking web service call but it
> >> can’t invoke the web service over HTTP transport.
> >>
> >> Can you please help?
> >>
> >> A chunck of the configuration from my synapse.xml looks like the one
> >> below:
> >>
> >>
> >>
> ---------------------------------------------------------------------------------------------------
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> ---------------------------------------------------------------------------------------------------
> >>
> >>
> >>
> >> Hiranya Jayathilaka-3 wrote:
> >> >
> >> > Sample 300 should have the info you're looking for. Note how the
> >> message
> >> > payload and SOAP action has been set as properties:
> >> >
> >> > http://synapse.apache.org/Synapse_Samples.html#Sample300
> >> >
> >> > Thanks,
> >> > Hiranya
> >> >
> >> > On Sat, Dec 17, 2011 at 4:30 AM, spayasam wrote:
> >> >
> >> >>
> >> >> Hello All
> >> >> I've started learning Synapse very recently.
> >> >>
> >> >> What I am tasked with doing is invoking a web service from synapse
> >> every
> >> >> 60
> >> >> secs and check if there is data in the database. I was able to do
> this
> >> >> using
> >> >> the . But I'm not sure how to specify the method of the web service
> >> that
> >> >> needs to be invoked and how to pass the request payload to the web
> >> >> service
> >> >> method.
> >> >>
> >> >> Can some one please advise or point me to the specific sample
> provided
> >> in
> >> >> Synapse? I've hunted the samples but didn't get one similar to this.
> >> not
> >> >> sure if i'm missing something
> >> >>
> >> >> Thanks
> >> >> Shravan
> >> >> --
> >> >> View this message in context:
> >> >> http://old.nabble.com/New-To-Synapse-tp32989507p32989507.html
> >> >> Sent from the Synapse - User mailing list archive at Nabble.com.
> >> >>
> >> >
> >> >
> >> >
> >> > --
> >> > Hiranya Jayathilaka
> >> > Associate Technical Lead;
> >> > WSO2 Inc.; http://wso2.org
> >> > E-mail: hiranya@wso2.com; Mobile: +94 77 633 3491
> >> > Blog: http://techfeast-hiranya.blogspot.com
> >> >
> >> >
> >>
> >> --
> >> View this message in context:
> >> http://old.nabble.com/New-To-Synapse-tp32989484p33005239.html
> >> Sent from the Synapse - User mailing list archive at Nabble.com.
> >>
> >
> >
> >
> > --
> >
> > Sadeep Jayasumana****
> >
> > Email: gayansadeep@gmail.com****
> >
> > Phone: +94-77-2266507
> >
> >
>
> --
> View this message in context:
> http://old.nabble.com/New-To-Synapse-tp32989484p33013286.html
> Sent from the Synapse - User mailing list archive at Nabble.com.
>
--
Sadeep Jayasumana****
Email: gayansadeep@gmail.com****
Phone: +94-77-2266507
Re: New To Synapse
Posted by spayasam <Sh...@gmail.com>.
Thank you very much Sadeep and Hiranya for your help/advise. This is now
working.
However, when I saw the callout mediator documentation in the configuration
language page - it says -
"As the callout mediator performs a blocking call, it cannot use the default
non-blocking http/s transports based on Java NIO, and thus defaults to using
the samples/axis2Client/client_repo/conf/axis2.xml as the Axis2
configuration, and samples/axis2Client/client_repo as the client repository
unless these are specified separately"
Not sure if I'm misinterpreting something here. Can you please clarify?
Thanks
Shravan
Sadeep Jayasumana-2 wrote:
>
> Hi,
>
> On Tue, Dec 20, 2011 at 1:39 AM, spayasam wrote:
>
>>
>> Thanks a lot. I figured that out, however I'm stuck with invoking the web
>> service now.
>>
>> When we invoke a web service using mediator, it does a non-blocking
>> invoke
>> of the external service since we use HTTP transport. Because of this
>> non-blocking invocation, the web service response is received at a
>> latertime. What is the synapse configuration element where the web
>> service
>> response can be received and processed in a synchronized fashion?
>>
>
> Synapse's callout mediator can be used to invoke a web service
> synchronously over HTTP. Please have a look at the callout mediator sample
> [1].
>
> [1] http://synapse.apache.org/Synapse_Samples.html#Callout
>
> Thanks,
> Sadeep
>
> I’ve tried using mediator which does a blocking web service call but it
>> can’t invoke the web service over HTTP transport.
>>
>> Can you please help?
>>
>> A chunck of the configuration from my synapse.xml looks like the one
>> below:
>>
>>
>> ---------------------------------------------------------------------------------------------------
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> ---------------------------------------------------------------------------------------------------
>>
>>
>>
>> Hiranya Jayathilaka-3 wrote:
>> >
>> > Sample 300 should have the info you're looking for. Note how the
>> message
>> > payload and SOAP action has been set as properties:
>> >
>> > http://synapse.apache.org/Synapse_Samples.html#Sample300
>> >
>> > Thanks,
>> > Hiranya
>> >
>> > On Sat, Dec 17, 2011 at 4:30 AM, spayasam wrote:
>> >
>> >>
>> >> Hello All
>> >> I've started learning Synapse very recently.
>> >>
>> >> What I am tasked with doing is invoking a web service from synapse
>> every
>> >> 60
>> >> secs and check if there is data in the database. I was able to do this
>> >> using
>> >> the . But I'm not sure how to specify the method of the web service
>> that
>> >> needs to be invoked and how to pass the request payload to the web
>> >> service
>> >> method.
>> >>
>> >> Can some one please advise or point me to the specific sample provided
>> in
>> >> Synapse? I've hunted the samples but didn't get one similar to this.
>> not
>> >> sure if i'm missing something
>> >>
>> >> Thanks
>> >> Shravan
>> >> --
>> >> View this message in context:
>> >> http://old.nabble.com/New-To-Synapse-tp32989507p32989507.html
>> >> Sent from the Synapse - User mailing list archive at Nabble.com.
>> >>
>> >
>> >
>> >
>> > --
>> > Hiranya Jayathilaka
>> > Associate Technical Lead;
>> > WSO2 Inc.; http://wso2.org
>> > E-mail: hiranya@wso2.com; Mobile: +94 77 633 3491
>> > Blog: http://techfeast-hiranya.blogspot.com
>> >
>> >
>>
>> --
>> View this message in context:
>> http://old.nabble.com/New-To-Synapse-tp32989484p33005239.html
>> Sent from the Synapse - User mailing list archive at Nabble.com.
>>
>
>
>
> --
>
> Sadeep Jayasumana****
>
> Email: gayansadeep@gmail.com****
>
> Phone: +94-77-2266507
>
>
--
View this message in context: http://old.nabble.com/New-To-Synapse-tp32989484p33013286.html
Sent from the Synapse - User mailing list archive at Nabble.com.
Re: New To Synapse
Posted by Sadeep Jayasumana <ga...@gmail.com>.
Hi,
On Tue, Dec 20, 2011 at 1:39 AM, spayasam <Sh...@gmail.com> wrote:
>
> Thanks a lot. I figured that out, however I'm stuck with invoking the web
> service now.
>
> When we invoke a web service using mediator, it does a non-blocking invoke
> of the external service since we use HTTP transport. Because of this
> non-blocking invocation, the web service response is received at a
> latertime. What is the synapse configuration element where the web service
> response can be received and processed in a synchronized fashion?
>
Synapse's callout mediator can be used to invoke a web service
synchronously over HTTP. Please have a look at the callout mediator sample
[1].
[1] http://synapse.apache.org/Synapse_Samples.html#Callout
Thanks,
Sadeep
I’ve tried using mediator which does a blocking web service call but it
> can’t invoke the web service over HTTP transport.
>
> Can you please help?
>
> A chunck of the configuration from my synapse.xml looks like the one below:
>
>
> ---------------------------------------------------------------------------------------------------
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> ---------------------------------------------------------------------------------------------------
>
>
>
> Hiranya Jayathilaka-3 wrote:
> >
> > Sample 300 should have the info you're looking for. Note how the message
> > payload and SOAP action has been set as properties:
> >
> > http://synapse.apache.org/Synapse_Samples.html#Sample300
> >
> > Thanks,
> > Hiranya
> >
> > On Sat, Dec 17, 2011 at 4:30 AM, spayasam wrote:
> >
> >>
> >> Hello All
> >> I've started learning Synapse very recently.
> >>
> >> What I am tasked with doing is invoking a web service from synapse every
> >> 60
> >> secs and check if there is data in the database. I was able to do this
> >> using
> >> the . But I'm not sure how to specify the method of the web service that
> >> needs to be invoked and how to pass the request payload to the web
> >> service
> >> method.
> >>
> >> Can some one please advise or point me to the specific sample provided
> in
> >> Synapse? I've hunted the samples but didn't get one similar to this. not
> >> sure if i'm missing something
> >>
> >> Thanks
> >> Shravan
> >> --
> >> View this message in context:
> >> http://old.nabble.com/New-To-Synapse-tp32989507p32989507.html
> >> Sent from the Synapse - User mailing list archive at Nabble.com.
> >>
> >
> >
> >
> > --
> > Hiranya Jayathilaka
> > Associate Technical Lead;
> > WSO2 Inc.; http://wso2.org
> > E-mail: hiranya@wso2.com; Mobile: +94 77 633 3491
> > Blog: http://techfeast-hiranya.blogspot.com
> >
> >
>
> --
> View this message in context:
> http://old.nabble.com/New-To-Synapse-tp32989484p33005239.html
> Sent from the Synapse - User mailing list archive at Nabble.com.
>
--
Sadeep Jayasumana****
Email: gayansadeep@gmail.com****
Phone: +94-77-2266507
Re: New To Synapse
Posted by spayasam <Sh...@gmail.com>.
Thanks a lot. I figured that out, however I'm stuck with invoking the web
service now.
When we invoke a web service using mediator, it does a non-blocking invoke
of the external service since we use HTTP transport. Because of this
non-blocking invocation, the web service response is received at a
latertime. What is the synapse configuration element where the web service
response can be received and processed in a synchronized fashion?
I’ve tried using mediator which does a blocking web service call but it
can’t invoke the web service over HTTP transport.
Can you please help?
A chunck of the configuration from my synapse.xml looks like the one below:
---------------------------------------------------------------------------------------------------
---------------------------------------------------------------------------------------------------
Hiranya Jayathilaka-3 wrote:
>
> Sample 300 should have the info you're looking for. Note how the message
> payload and SOAP action has been set as properties:
>
> http://synapse.apache.org/Synapse_Samples.html#Sample300
>
> Thanks,
> Hiranya
>
> On Sat, Dec 17, 2011 at 4:30 AM, spayasam wrote:
>
>>
>> Hello All
>> I've started learning Synapse very recently.
>>
>> What I am tasked with doing is invoking a web service from synapse every
>> 60
>> secs and check if there is data in the database. I was able to do this
>> using
>> the . But I'm not sure how to specify the method of the web service that
>> needs to be invoked and how to pass the request payload to the web
>> service
>> method.
>>
>> Can some one please advise or point me to the specific sample provided in
>> Synapse? I've hunted the samples but didn't get one similar to this. not
>> sure if i'm missing something
>>
>> Thanks
>> Shravan
>> --
>> View this message in context:
>> http://old.nabble.com/New-To-Synapse-tp32989507p32989507.html
>> Sent from the Synapse - User mailing list archive at Nabble.com.
>>
>
>
>
> --
> Hiranya Jayathilaka
> Associate Technical Lead;
> WSO2 Inc.; http://wso2.org
> E-mail: hiranya@wso2.com; Mobile: +94 77 633 3491
> Blog: http://techfeast-hiranya.blogspot.com
>
>
--
View this message in context: http://old.nabble.com/New-To-Synapse-tp32989484p33005239.html
Sent from the Synapse - User mailing list archive at Nabble.com.