I'am trying to build a custom transformer with Muledevkit. I am successful in building one and I can install it in my studio. But I couldn't figure out a way how to allow the end-user to set a property (like how its shown in custom-transformer under the 'Transformer Settings' -> 'Property') to access inside my Transformer class.
Regards,
Raj
Unfortunately this is a feature not covered by the DevKit transformers.
Because DevKit transformers can be implicitly called (Mule out of the box mechanism to resolve transformers), there are some constrains we have to follow.
The only work around I can think of is to create a processor that does the transformation for you.
I'll add this as a feature request on our backlog.
HTH
Related
I have a small question. Do we have any option to stop/terminate the flow where ever we want in Mulesoft 4? Example: After executing transform message or after logger processor want to stop/terminate the flow based on our business requirement.
Two different ways to achieve that are described in the KB article https://help.mulesoft.com/s/article/How-To-Stop-Or-Start-Flows-In-Mule-4-x-Programmatically
Basically you need to get an instance of the Mule registry, the lookup the flow and stop or start it.
Yes, you can make use of groovy script or java class to start/stop mulesoft at runtime. Drag and drop the scripting component from the palette and choose groovy as your engine and use the script below.
flowName = registry.lookupByName('flowName').get();
if (flowName.isStarted())
flowName.stop()
else
flowName.start()
Just like WS-Policies, Swagger , WSDLs, WADLs etc.Can APIs be added as a custom asset in the G-reg?
As far as I understand you need to introduce a new content type artifact(WSDL, WADL, Policy and Schemas are known as content type artifacts) to G-Reg. To upload such artifact programmatically you need to write some custom code which is called handlers and extensions,
Handlers
Please find this blog post which explains a basic handler for your requirement. Other than that please refer below sample media type handlers available in G-Reg(carbon-registry)
WSDLMediaTypeHandler.java
SwaggerMediaTypeHandler.java
WADLMediaTypeHandler.java
GC Eextensions
If you're introducing a content type artifact it is must write a publisher and store extensions to get it work in pub/store. However, users can upload such artifacts in admin/mgt console just by deploying the handler correctly.
Please find this question to get an idea of the extension creation.
It is possible using multiple RAML files in one APIKit Mule Project?
Let's say I have two functions /api/func1 and /api/func2.
Each of the functions is defined in its own raml - func1.raml and func2.raml.
I've generated a flow in Anypoint for the first function using the APIKit wizard. It's working ok.
Now, I'm trying generating a flow for the second function. The flow is generated with no errors. However, it just doesn't work. I've tried fixing the URLs, bindings, configurations and nothing really helps.
Note, that I don't wanna bind both the RAMLs into one file. The reason is that it's easier to develop/maintain the functions separately.
The only solution I can see is to define two separate projects. But this is not really what I'd like to do.
So, looking for an advice of how to deal with this situation.
Thanks,
Ok, actually, it's possible.
What you need to do is make the "Path"es different in the HTTP connectors for the flows generated.
The apikit wizard generates the default path that looks like this: "/api/*".
So, Mule generates an error when attempting to deploy the app. What you need to do is changing paths to "/api/func1/" and "/api/func2/"
You can continue having a single RAML file and make external references to simplify your raml, here is an example:
#%RAML 0.8
title: Eventlog API
version: 1.0
baseUri: http://eventlog.example.org/{version}
schemas:
- eventJson: !include eventSchema.json
eventListJson: !include eventlistSchema.json
Also going by strict REST design it is recommended to have a resource related details maintained in a single RAML file.
Optionally you may edit the url's to resolve any context related conflict.
I have a requirement in hand where I need to change the Mule Flow Threading Behavior at runtime without the need of bouncing the whole Mule Container. I figured out few different ways to achieve this, but none of them are working.
I tried accessing the Mule Context Registry and from there I was trying to do a lookup of "FlowConstructLifecycleManager" Object so that I can tap in there and access the threading profile of the object and reset those values, then stop and start the flow programmatically in order to get the change applied in the flow. I am stuck in this approach as I was unable to get hold of the FlowConstructLifecycleManager Object neither from the Mule Spring Registry nor from the Transient Registry. I was able to get hold of the Flow object though which has a direct reference to that FlowConstructLifecycleManager Object. But, unfortunately, they made this object as protected and didn't expose any method for us to access this object.
Since I was unable to access this FlowConstructLifecycleManager directly from Mule implemented Flow class, I decided to extend this Flow class and just add another public method to it so that I can access FlowConstructLifecycleManager object from Flow object programmatically. But, I am stuck in this approach as well as even if I am putting my version of the same Flow class packaged and dropped in lib/user folder of the container, it is still not picking up my version of the class, and loading the original version instead.
It would be of great help if I can get any pointer on the approach of solving either my first or second problem.
Thanks in advance,
Ananya
In our company, we are building a dashboard from where we should be able to start/stop any flow or change the processing power of any flow by increasing/ decreasing the active threads for a flow or changing the pollen polling frequency. All of these should be done at runtime without any server downtime.
Anyway, I made it working finally. I had to patch up the mule-core jar and expose few objects so that I can get to the thread profile object and tweak the values at runtime and stop/ start the flow to reflect the changes to take effect. I know this is little bit messy and but it works.
Thanks,
Ananya
In the past I have been able to apply advice chain handlers on different outbound channel adapters. I am trying to do the same on int-aws:s3-outbound-channel-adapter but its not allowing that. Does this component not allows this behavior. Basically I am interested in finding out when the adapter completes the upload of a file to S3.
<int-aws:s3-outbound-channel-adapter
id="s3-outbound" channel="files" bucket="${s3.bucket}"
multipart-upload-threshold="5192" remote-directory="${s3.remote.dir}"
accessKey="${accessKey}" secretKey="${secretKey}">
THIS DOESNT WORKS - throws an error !!!
<int:request-handler-advice-chain>
</int:request-handler-advice-chain>
</int-aws:s3-outbound-channel-adapter>
Right, that isn't allowed by the XSD. Feel free to raise a JIRA on the matter.
But that doesn't matter that it doesn't work at all.
If you are on Spring Integration 4.x already you can move that <int-aws:s3-outbound-channel-adapter> to the Java & Annotation configuration using #Bean and #ServiceActivator for the AmazonS3MessageHandler.
Where #ServiceActivator has adviceChain attribute to specify bean references to your Advices.
... or you can do that using generic <int:outbound-channel-adapter> and specify AmazonS3MessageHandler as raw <bean> for the ref of the first one.
HTH