I was wondering if anyone else has found a relatively easy way of proxying a workday service to limit the operations to one or two operations. Our Workday service we want to proxy has almost 200 operations in it and the WSDL is over 52,000 lines. We would like to use ESB as a hub for our enterprise web services, but have not found an easy way to expose one or two operations, as we don't want to expose the world to everyone at this point. Manually trying to trim a 52,000 line wsdl down to under 100 lines is a little daunting if it needs to be done for a couple dozen services and the wsdl is updated at least twice a year.
Has anyone had similar experiences or suggestions on tools that may be able to help create a custom wsdl to publish from our proxied service? We don't have any java code to define the service and generate a wsdl.
Am I wrong thinking that I can limit the operations of my proxied service by creating a custom wsdl to expose only those operations we want for the given proxy?
Any suggestions would be appreciated.
You're right thinking that you can limit your service's operations like that. You have two way to create your "custom" wsdl :
Use tools like altova xmlsply for exemple and comment the operations you don't want to expose
Develop a script with ant for exemple and use xsl to automatically update your wsdl
Related
I'm Using Mule 4.2.2 Runtime. We use the errorHandling generated by APIKIT and we customized it according to customer requirement's, which is quite standard across all the upcoming api's.
Thinking to convert this as a connector so that it will appear as component/connector in palette to reuse across all the api's instead copy paste everytime.
Like RestConnect for API specification which will automatically convert in to connector as soon as published in Exchange ( https://help.mulesoft.com/s/article/How-to-generate-a-connector-for-a-REST-API-for-Mule-3-x-and-4-x).
Do we have any option like above publishing mule common flow which will convert to component/connector?
If not, which one is the best way suits in my scenario
1) using SDK
https://dzone.com/articles/mulesoft-custom-connector-using-mule-sdk-for-mule (or)
2) creating jar as mentioned in this page
[https://www.linkedin.com/pulse/flow-reusability-mule-4-nagaraju-kshathriya][2]
Please suggest which one is best and easy way in this case? Thanks in advance.
Using the Mule SDK (1) is useful to create a connector or module in Java. Your questions wasn't fully clear about what do want to encapsulate in a connector. I understand that you want is to share parts of a flow as a connector in the palette, which is different. The XML SDK seems to be more inline with that. You will need to make some changes to encapsulate the flow elements, as described in the documentation. That's actually very similar to how REST connect works.
The method described in (2) is for importing XML flows from a JAR file, but the method described by that link is actually incorrect for Mule 4. The right way to implement sharing flows through a library is the one described at https://help.mulesoft.com/s/article/How-to-add-a-call-to-an-external-flow-in-Mule-4. Note that this method doesn't create a connector that can be used from Anypoint Studio palette.
From personal experience - use common flow, put it to repository and include it as dependency to pom file. Even better solution - include is as flow to the Domain app and use it alone with your shared https connector.
I wrote a lot of Java based custom components. I liked them a lot and was proud of them. But transition from Mule3 to Mule4 killed most of them. Even in Mule4 Mulesoft makes changes periodically which make components incompatible with runtime.
I am a newbie in Microservices, having theoretical knowledge. I want to make a small application in Microservices. Can anyone please help me with the idea of how to implement microservices?
Thanks in Advance!!
You can create something like a currency conversion app with three microservices like these:
Limit service;
Exchange service;
Currency conversion service.
Limit service and currency conversion service can communicate with the database for retrieving the values of the limits and currencies conversion.
For more info check github.com/in28minutes and look after a microservice repository.
No matter how perfect the code of your microservice is, you may face issues with support and development if the microservice architecture doesn’t work according to certain
rules.
The following rules can help you with microservices a lot:
You have to do everything by yourself because you do not have any Rails and architecture out of the box that can be started by one command. Your microservice should load libraries, establish client connections, and be able to release resources if it stops working for any reason.
It means that being in the microservice folder and having made the 'ruby server.rb' command (a file for starting a microservice) we should make the microservice do the following:
Load used gems, vendor libraries (if used), and our own libraries
Use the configuration (depend on the environment) for adapters or classes of client connections
Establish client connections (permanent connections are meant here). As your microservice should be ready for any shutdowns, you should take care of closing these client connections at such moments. EventMachine and its callback mechanism helps a lot with this.
After that your microservice should be loaded and ready for work.
Incapsulate your communication with the services into abstractly named adapters. We name these adapters based on their role (PubSub, SMSMessenger, Mailer, etc.). This way, we can always change the inner implementation of these adapters by replacing the service if the names of our classes are service agnostic.
For example, we almost always use Redis in our application from the very beginning, thus it is also possible to use it as a message bus, so that we don’t have to integrate any other services. However, with the application growth we should think about solutions like RabbitMQ which are more appropriate for cases like ours.
If your code is designed in such a way that your classes are coupled with each other, do it according to the dependency inversion principle. This will help your code to avoid issues with lib booting.
Learn more here
You can try splitting an existing Monolithic application to gain perspective on microservice architecture.
I wrote this article, which talks about splitting a Django App into microservices. Hope it helps.
Having a legacy on prem SOAP API, need to expose it to the vendor to call in, however, vendor preferred API in oData feed. Newbie in odata myself, not sure how would it work and if it at all possible. My thought is to write an API tier translating the odata call to a SOAP call? thoughts?
This is a very similar question to here: Is it possible to query a soap endpoint via odata?
Here is the answer I gave for that question:
You could create an OData wrapper around a SOAP endpoint but I don't
think that it is worth it.
The OData service would allow filtering, ordering and selecting by all
of the properties (amongst other things) and the SOAP service may not
allow all of this so your OData service would probably have to go and
get all of the data and then post process it which loses the main
benefit of OData in that you can do all of the filtering and sorting
on the server side. You may as well just get the data client side and
filter it there.
If your SOAP service somehow does have all of this support then yes,
you could write an OData wrapper for it and get these benefits but it
would still be a lot of work to convert all of the different possible
queries into something that your SOAP service can handle.
I don't know your reasons for wanting an OData wrapper but it seems
like this might be a lot of work for minimal benefit but it all
depends on your use case.
I think that this is a very similar case here, writing an OData wrapper for this would be lot of work and wouldn't give many benefits. If you are using entity framework/web.api then it might not be too much work to do to write a new OData service to expose the functionality that they need and there are a lot of tutorials around (like this) that should help get you started but otherwise, it might be worth seeing whether they can consume your existing services or something similar!
While playing with DOSGI I am trying to load balance the available remote osgi service.
I have gone through OSGi Service Platform Service Compendium 4.3 and found that we will need implement load balancing in toplogy manager...I am trying to figure out the load on particular
remote service like how many client is consuming that service to decide on my load balancing strategy ..I am new to OSGI and DOSGI so sorry if I missed something...
So basically I want to know how I can get that number if it is possible or is there any property to get that information like we have service.ranking to get ranking of the service.
Thanks in advance for any response.
You can get a lot of information from the service hooks. However, if you need detailed information about the load I am not sure if the nr of clients is relevant, the latency invocations have seems much more relevant.
A way to measure this is to proxy the remote service an hide the original with the service hooks for other bundles. This is all quite advanced so it is too much to explain this in detail here. Consult the OSGi Core Specification 5.0.0 for details.
I want to consume a file which is wsdl with VB6 , anyone can help me? Or how can I convert wsdl to proxy class ?
You can look at either Microsoft's SOAP Toolkit or PocketSOAP. Might be best to look at both, but don't despair over the learning curve. Both offer simple approaches for simple situations as well as complex solutions for more complex ones.
First, you have a problem with terminology: you do not want to consume the file. The file is a description of a web service. It is the web service that you want to consume. The WSDL gives you all the information you need to consume it.
There are methods to consume a web service in VB6. In the same way you shouldn't be using VB6, you shouldn't be using any of these methods.
You should use VB.NET to create a small COM component. This component will consume the service by using "Add Service Reference" to create proxy classes. You will be able to use modern tools and techniques to develop and debug this component.
You can then consume the COM component from VB6, just like any other COM component.
Basicly you can use the SOAP moniker like this
Set oProxy = GetObject("soap:wsdl=http://server/folder/service.wsdl")
oProxy.Method "Param1"
You can check out the answers to What is the best way to consume a web service from VB6?