[Dev] Custom Mediator File
I am trying to include a custom mediator. I have created a .java file which extends the AbstractMediator class as needed, with a Mediate() method. However, when I try to compile the file it fails (probably because it doesn't know where the Abstract Mediator files are). How do I compile the file properly to include it in the project? Thanks. ___ Dev mailing list Dev@wso2.org http://wso2.org/cgi-bin/mailman/listinfo/dev
[Dev] Custom Mediator for JSON Payload Mediation
Hi, I am attempting to write a Custom Mediator using http://wso2.com/library/2898/ and http://wso2.com/library/2936/. However, these examples are for XML payloads. I am unsure how I could access the message payload within the mediate() method when the payload the JSON. Are there any available solutions which do not involve changing my JSON to XML and back (I cannot do that as my payload may be invalid XML, but it will always be valid JSON). Thank you, Maz ___ Dev mailing list Dev@wso2.org http://wso2.org/cgi-bin/mailman/listinfo/dev
[Dev] JSON Payloads with Spaces in Attribute Names
I am having some trouble with WSO2AM-1.7. When I try to GET a resource such as:
{ "hello there" : "world"}
The mediation step does not work, because of the space in "hello there". I know
XML element types cannot contain spaces in their names, and the error I'm
getting suggests that's precisely what the program is trying to do. This must
mean that the data is implicitly changed to XML, even though all my data is
supposed to stay in JSON.
I am using the messagebuilder and formatters:
Is there another message builder or formatter I should be using instead?
Thanks,
Maz ___
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Re: [Dev] getPayloadJSON returning an empty object
Just in case someone has the same issue, I managed to get mine working.
I had to do a workaround method:
1. Use property mediator before the script mediator to set a property:
2. Within the script mediator, get the payload (as a string) by doing this:
var pl_string = mc.getProperty("JSONPayload");
3. Now have to convert the string into a JS object: var pl =
JSON.parse(pl_string);
4. Manipulate the payload as if you'd obtained it using getPayloadJSON().
I know it's a hacked together method, but none of the other ways were working
for me so I tried this one.
Some information in case anyone wants to debug it:
I'm using API Manager 1.7.
I set the message builders and formatters to these:Builder class=
"org.apache.synapse.commons.json.JsonStreamBuilder"
Formatter class = "org.apache.synapse.commons.json.JsonStreamFormatter"
Hope this helps,
Maz
From: mlaka...@hotmail.com
To: mal...@wso2.com; dev@wso2.org
Date: Mon, 12 Jan 2015 08:54:09 +1300
Subject: Re: [Dev] getPayloadJSON returning an empty object
I'm using the ESB that comes with WSO2 API Manager 1.7.0.
The Formatter is: class="org.apache.axis2.json.JSONMessageFormatter" The
Builder is: class="org.apache.axis2.json.JSONBuilder"
Date: Fri, 9 Jan 2015 09:25:53 +0530
From: mal...@wso2.com
To: dev@wso2.org
Subject: Re: [Dev] getPayloadJSON returning an empty object
Also specify what is the ESB version used? 4.9.0 M4 or 4.8.1?
On Fri, Jan 9, 2015 at 7:54 AM, Asanka Dissanayake wrote:
Hi Maz,
What is the JSON builder and formatter you are using? You can find them in
/repository/conf/axis2/axis2.xml under Formatters and Builders.
Thanks,
Asanka
On Thu, Jan 8, 2015 at 8:14 PM, Bhathiya Jayasekara wrote:
Hi Maz,
I quickly tried out your config and it worked fine for me. I'm copying my full
config here for your reference.
http://ws.apache.org/ns/synapse"; name="jsonTest" context="/json">
var older =
mc.getPayloadJSON(); var newer=older;
mc.setPayloadJSON(newer);
Request:curl -X POST -d "{\"origin\":\"202.37.75.130\"}" -H "Content-Type:
application/json" http://10.113.56.222:8281/json
Response:{"origin":"202.37.75.130"}
Hope this helps.
Thanks,Bhathiya
On Fri, Jan 9, 2015 at 3:55 AM, Maz Lakadia wrote:
I am doing some very simple script mediation as a test to see if I can change
the payload being returned by my server.My unmediated payload comes out
as:{"origin":"202.37.75.130"}
Then I try doing a very simple check to see whether get and set work for
payloads:
var older = mc.getPayloadJSON();
var newer=older;
mc.setPayloadJSON(newer);
My result from this is:{"jsonObject":""}
I have done testing that shows that setPayloadJSON() works, which means that my
getPayloadJSON must be returning an empty object.Looking at the log file shows
this:ERROR {org.apache.synapse.mediators.bsf.ScriptMessageContext} - JSON
object is null. {org.apache.synapse.mediators.bsf.ScriptMessageContext}
Is there anyone else having this error? Is this happening because the Payload
is actually a Java object rather than a JSON object?
Thanks,
Maz
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Fax :94 11 2145300 Skype : malaka.sampath.silvaLinkedIn :
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Re: [Dev] getPayloadJSON returning an empty object
I'm using the ESB that comes with WSO2 API Manager 1.7.0.
The Formatter is: class="org.apache.axis2.json.JSONMessageFormatter" The
Builder is: class="org.apache.axis2.json.JSONBuilder"Date: Fri, 9 Jan 2015
09:25:53 +0530
From: mal...@wso2.com
To: dev@wso2.org
Subject: Re: [Dev] getPayloadJSON returning an empty object
Also specify what is the ESB version used? 4.9.0 M4 or 4.8.1?
On Fri, Jan 9, 2015 at 7:54 AM, Asanka Dissanayake wrote:
Hi Maz,
What is the JSON builder and formatter you are using? You can find them in
/repository/conf/axis2/axis2.xml under Formatters and Builders.
Thanks,
Asanka
On Thu, Jan 8, 2015 at 8:14 PM, Bhathiya Jayasekara wrote:
Hi Maz,
I quickly tried out your config and it worked fine for me. I'm copying my full
config here for your reference.
http://ws.apache.org/ns/synapse"; name="jsonTest" context="/json">
var older =
mc.getPayloadJSON(); var newer=older;
mc.setPayloadJSON(newer);
Request:curl -X POST -d "{\"origin\":\"202.37.75.130\"}" -H "Content-Type:
application/json" http://10.113.56.222:8281/json
Response:{"origin":"202.37.75.130"}
Hope this helps.
Thanks,Bhathiya
On Fri, Jan 9, 2015 at 3:55 AM, Maz Lakadia wrote:
I am doing some very simple script mediation as a test to see if I can change
the payload being returned by my server.My unmediated payload comes out
as:{"origin":"202.37.75.130"}
Then I try doing a very simple check to see whether get and set work for
payloads:
var older = mc.getPayloadJSON();
var newer=older;
mc.setPayloadJSON(newer);
My result from this is:{"jsonObject":""}
I have done testing that shows that setPayloadJSON() works, which means that my
getPayloadJSON must be returning an empty object.Looking at the log file shows
this:ERROR {org.apache.synapse.mediators.bsf.ScriptMessageContext} - JSON
object is null. {org.apache.synapse.mediators.bsf.ScriptMessageContext}
Is there anyone else having this error? Is this happening because the Payload
is actually a Java object rather than a JSON object?
Thanks,
Maz
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M: +94 777 219 791Tel : 94 11 214 5345
Fax :94 11 2145300 Skype : malaka.sampath.silvaLinkedIn :
http://www.linkedin.com/pub/malaka-silva/6/33/77Blog :
http://mrmalakasilva.blogspot.com/
WSO2, Inc. lean . enterprise . middleware
http://www.wso2.com/
http://www.wso2.com/about/team/malaka-silva/
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[Dev] getPayloadJSON returning an empty object
I am doing some very simple script mediation as a test to see if I can change
the payload being returned by my server.My unmediated payload comes out
as:{"origin":"202.37.75.130"}
Then I try doing a very simple check to see whether get and set work for
payloads:
var older = mc.getPayloadJSON();
var newer=older;
mc.setPayloadJSON(newer);
My result from this is:{"jsonObject":""}
I have done testing that shows that setPayloadJSON() works, which means that my
getPayloadJSON must be returning an empty object.Looking at the log file shows
this:ERROR {org.apache.synapse.mediators.bsf.ScriptMessageContext} - JSON
object is null. {org.apache.synapse.mediators.bsf.ScriptMessageContext}
Is there anyone else having this error? Is this happening because the Payload
is actually a Java object rather than a JSON object?
Thanks,
Maz ___
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[Dev] Conditional Payload Factory Mediator configurations
Hi,
I am trying to use Payload Factory Mediator to change server responses. Suppose
I have 2 sorts of JSON objects my server can respond with: ball and bat. Now
for the ball case, my response could look something like:
{"ball":{"weight": 152},{"radius": 46},{"colour":"white"}}
If the case of "ball" I want to change the response to something like:
{"baseball":{"colour":"white"},{"mass":152},}
I know how to mediate a single resource like that. i.e. given the server
response is "ball" object, I can change it to what I want. The difficulty
arises if now I have a 2nd possible response from the server (a "bat" object).
I wish to perform a similar mediation on it, but it would have different fields
that need to be filled. Therefore my Payload Factory code from the "ball" case
will no longer work. How could I write the configuration files such that for
different resources ("bat","ball",etc) a different template is used to fill in
the data? Is it easier to use a Script Mediator or some other sort of mediator
for this purpose?
Thanks,
Maz ___
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Re: [Dev] Payload mediation of JSON message using Script Mediator
I will be mapping resources that are in a particular format into another
format. This means I will have a lot of template mappings that I could load
into script mediator and let it use the appropriate one for the task. I am
unsure of how I could do that will payload factory mediator. Do you have any
clues?Date: Wed, 7 Jan 2015 09:07:13 +0530
Subject: Re: [Dev] Payload mediation of JSON message using Script Mediator
From: va...@wso2.com
To: awanth...@wso2.com
CC: mlaka...@hotmail.com; dev@wso2.org
What is the real motivation you to use script mediator instead of payload
factory?
You can easly construct jaon payload with payload factory
On Wednesday, January 7, 2015, Awanthika Senarath wrote:
Hi Maz,
Can you follow the format at [1] and see whether it works? This explains the
sample 351 in ESB.
[1]
https://docs.wso2.com/display/ESB480/Sample+351%3A+Inline+script+mediation+with+JavaScript
On Wed, Jan 7, 2015 at 4:03 AM, Maz Lakadia wrote:
Hi, I'm using script mediator to mediate the response payload from my server.
The unmediated response is:
{"origin":"202.37.75.130"}
I then add in a mediator via source code, that should change "origin" to
"IP_Address":
<![CDATA[ old_payload =
mc.getPayloadJSON(); payload["IP_Address"]
= old_payload["origin"];
mc.setPayloadJSON(payload); ]]>
However, my response remains unchanged (same as the unmediated response). I do
not know how I can fix this. Is there an error I am making?
Thanks,
Maz
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[Dev] Payload mediation of JSON message using Script Mediator
Hi, I'm using script mediator to mediate the response payload from my server.
The unmediated response is:
{"origin":"202.37.75.130"}
I then add in a mediator via source code, that should change "origin" to
"IP_Address":
However, my response remains unchanged (same as the unmediated response). I do
not know how I can fix this. Is there an error I am making?
Thanks,
Maz ___
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[Dev] Payload Factory sending back object wrapped in "jsonObject"
Hi, I am mediating a message using Payload Factory Mediator. The unmediated
message is:
{ "origin": "202.68.75.242"}
My mediated payload is meant to be:
{ "ip_address": "202.68.75.242"}
Instead it gives me back:
{ "jsonObject" :{ "ip_address": "202.68.75.242"}
}
How can I get rid of the "jsonObject" wrapper?
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[Dev] Empty Response from Server when using Payload Factory Mediator
I'm modifying a response sent by a server. To do this I've set up a test API
that is meant to just send back the IP, in a format like this:{
"origin": "202.37.75.130"
}
My unmodified code gives me back what I want.What I wish to do as a test is to
change the name of "origin" to "IP Address", hopefully getting a response like
this:{
"IP Address": "202.37.75.130"
}
To do this I've modified my outSequence section of the code, to be this (all
I've added is the PayloadFactoryMediator section, the filter was there before):
{
"IP Address" : {
"$1"
}
}
However, when I curl to the API as before I get a response:curl: (52) Empty
reply from serverCan anybody tell me what I may have done wrong?
Thanks,
Maz ___
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[Dev] Meaning of XML Tags
Hi, I'm trying to modify some given source code to try and add in a Mediator of my own. I'm trying to understand the code, and am having a hard time with some tags. Is there documentation specifically for the tags available? Thanks, Maz ___ Dev mailing list Dev@wso2.org http://wso2.org/cgi-bin/mailman/listinfo/dev
Re: [Dev] Mediating a Server Response
Thanks for your reply.
My data is JSON format, does that change your opinion about what I should use?
Also, is Script Mediator recommended for this task?Date: Mon, 5 Jan 2015
07:19:26 +0530
Subject: Re: [Dev] Mediating a Server Response
From: chana...@wso2.com
To: mlaka...@hotmail.com
CC: dev@wso2.org
Hi Maz,
WSO2 ESB provides the following mediators which you can use to transform a
message.
1) Enrich mediator - For simple transformations like enriching a field to a
message
2) PayloadFactory mediator - Somewhat advanced transformations. You can use
this for changing the elements of an xml message and create a completely new
message. This is the best option for your case
3) XSLT mediator - You can write XSLT tranformation code to transform the
message.
4) XQuery mediator - You can write XQuery code to transform the message.
Here is the documentation for ESB mediators.
https://docs.wso2.com/display/ESB481/Mediators
Thanks,
Chanaka
On Mon, Jan 5, 2015 at 3:39 AM, Maz Lakadia wrote:
Hi,
I would like to mediate a response from my server. This mediation would be
changing something like:
{ "Quote":{ "Current":{ "High":-61.53602401623976,
"Last":62.32682938796667 }, "Code":"WSO2",
"Price":62.32682938796667 }, "Status":"NOT-OK"}
into
{ "Estimate":{ "Now":{ "Max":-61.53602401623976 },
"Company_Name":"WSO2", "Worth":62.32682938796667 }, "Status":"Not
Good"}
What I need is to change the name of some fields, delete others, possibly
modify the values of some fields and add some fields.
What mediator(s) would you suggest I use for such a task.
Thanks,
Maz
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[Dev] Mediating a Server Response
Hi,
I would like to mediate a response from my server. This mediation would be
changing something like:
{ "Quote":{ "Current":{ "High":-61.53602401623976,
"Last":62.32682938796667 }, "Code":"WSO2",
"Price":62.32682938796667 }, "Status":"NOT-OK"}
into
{ "Estimate":{ "Now":{ "Max":-61.53602401623976 },
"Company_Name":"WSO2", "Worth":62.32682938796667 }, "Status":"Not
Good"}
What I need is to change the name of some fields, delete others, possibly
modify the values of some fields and add some fields.
What mediator(s) would you suggest I use for such a task.
Thanks,
Maz ___
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Re: [Dev] Modifying Samples for Testing
Sorry, I did not word my question well. I mean instead of sending requests to "http://localhost:9000/services/SimpleStockQuoteService";, I want to send requests to "httpbin.org" for testing purposes.Date: Mon, 29 Dec 2014 07:58:54 +0530 Subject: Re: [Dev] Modifying Samples for Testing From: mal...@wso2.com To: mlaka...@hotmail.com CC: dev@wso2.org Hi, You need to change the uri [1] from the synapse configuration. To update sequences, etc. in ESB, you can either use the ESB management console or copy the XML configuration to the source view. You can find the source view under menu Manage > Service Bus > Source View in the left navigation pane of the WSO2 ESB management console. [1] http://localhost:9000/services/SimpleStockQuoteService"/> On Mon, Dec 29, 2014 at 3:11 AM, Maz Lakadia wrote: Hi, I am currently using Sample 350 and playing around with it to see what I can do with script mediator. However, I'd like to change the address that I send requests to. Is there a way I can change the URL that I send requests to? Thank you for your time, Maz ___ Dev mailing list Dev@wso2.org http://wso2.org/cgi-bin/mailman/listinfo/dev -- Best Regards, Malaka Silva Senior Tech Lead M: +94 777 219 791Tel : 94 11 214 5345 Fax :94 11 2145300 Skype : malaka.sampath.silvaLinkedIn : http://www.linkedin.com/pub/malaka-silva/6/33/77Blog : http://mrmalakasilva.blogspot.com/ WSO2, Inc. lean . enterprise . middleware http://www.wso2.com/ http://www.wso2.com/about/team/malaka-silva/ Save a tree -Conserve nature & Save the world for your future. Print this email only if it is absolutely necessary. ___ Dev mailing list Dev@wso2.org http://wso2.org/cgi-bin/mailman/listinfo/dev
[Dev] Modifying Samples for Testing
Hi, I am currently using Sample 350 and playing around with it to see what I can do with script mediator. However, I'd like to change the address that I send requests to. Is there a way I can change the URL that I send requests to? Thank you for your time, Maz ___ Dev mailing list Dev@wso2.org http://wso2.org/cgi-bin/mailman/listinfo/dev
[Dev] Script Mediator for JSON
I am trying to use Script Mediator to convert a message Payload. However, Samples are all using a method called getPayloadXML. My Payload will be in JSON form; is there a JSON equivalent of this? I could transform the Payload to XML for my mediations, but that's a last resort. Thank you, Maz ___ Dev mailing list Dev@wso2.org http://wso2.org/cgi-bin/mailman/listinfo/dev
[Dev] Transforming Message Content
Hello,I am currently trying to create an application that will help to output data in a specific format for a user to view on a website. The way I am thinking about doing this is by using WSO2 Payload Factory Mediator to modify the client request to be what the server database expects. Then I can modify the server's response to output in the form expected by the client. My database is JSON, not XML. I had a look at Sample 17 (https://docs.wso2.com/pages/viewpage.action?pageId=33136018) on the WSO2 website for ESB. However, that is an XML example. I was wondering if there was a similar example, but for JSON. Even if the method used does not utilise Payload Factory Mediator I would be open to using it. Thank you for your time,Maz ___ Dev mailing list Dev@wso2.org http://wso2.org/cgi-bin/mailman/listinfo/dev
