Representational state transfer (REST) is a software architectural style that defines a set of constraints to be used for creating Web services. Web services that conform to the REST architectural style, called RESTful Web services (RWS), provide interoperability between computer systems on the Internet. RESTful Web services allow the requesting systems to access and manipulate textual representations of Web resources by using a uniform and predefined set of stateless operations. Other kinds of Web services, such as SOAP Web services, expose their own arbitrary sets of operations.
I'm testing a REST API that is used for our IRIS Backend with a mobile app (Angular / ionic).
The problem is that, our test environment does not yet have HTTPS capabilities, it's something we're going to set up ASAP, but right now we don't have it set up.
We want to test the API endpoints via a web browser using either a test application built in Angular, or the app itself built with NPM via the browser. This means that the set-cookie headers are being blocked by the browser.
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In this article we will look at the use of SQL Gateway in Iris. SQL Gateway allows Iris to have access to tables from other (external) database via ODBC or JDBC. We can access Tables or Views from various databases, such as Oracle, PostgreSQL, SQL Server, MySQL and others.
I sent a http post message with a large message body (approx. 200 kB) to a standard EnsLib.REST.GenericService using a standard EnsLib.HTTP.InboundAdapter.
When inspecting the message in the message viewer I expected to see a HTTPMessage XML in the Contents preview, but I found a GenericMessage with no HTTPHeaders section. After a while, I found out that the display in the message's Visual Trace differs from what is shown, when going to the View Full Contents view in the Contents tab of the message viewer.
Observing the avalanche of AI-driven and vibe-coding developer tools that have been appearing lately almost every month with more and more exciting dev features, I was puzzled whether it is possible to leverage it with InterSystems IRIS. At least to build a frontend. And the answer - yes! At least with the approach I followed.
Here is my recipe to prompt the UI vs InterSystems IRIS Backend:
Have the REST API on the IRIS side, which reflects some Open API (swagger) spec.
Generate the UI with any vibe-coding tool (e.g., Lovable) and point the UI to the REST API endpoint.
Profit!
Here is the result of my own exercise - a 100% prompted UI vs IRIS REST API that allows to list, create, update delete entries of a persistent class (Open Exchange,frontend source, video):
I have a primary dispatch class that implements %CSP.REST.AccessCheck() for some high level access checks before the route table forwards the request to the implementation classes which also implement %CSP.REST.AccessCheck() for some lower level access checks. The idea is that we know where we are in the implementation class and what the user is trying to do, so it makes more sense to check some lower level items there rather than trying to parse out the request at the dispatch class.
In your Interoperability Production you could always have a Business Operation that is an HTTP client, that uses OAuth 2.0 for authentication, but you had to customize the Operation for this authentication methodology. Since v2024.3, which was lately released, there is a new capability, providing new settings, to handle this more easily.
We've got some web services that utilise EnsLib.SOAP.Service/EnsLib.REST.Service. These do some further requests to a few operations to call some other services and return the combined results.
An issue that we are noticing is that some of the usage involves users hitting the refresh button a few too many times and generating a lot of requests. This is mostly an issue when the service that the operations are calling are down or slow to respond. IRIS starts using a lot of RAM when this occurs and has caused outages by getting through an extra 50-60GB of RAM.
We are calling a REST web-service from Ensemble using EnsLib.HTTP.OutboundAdapter and redefining the adapter class to set custom headers as described by @Eduard Lebedyuk here: How to set Content-Type
Using SQL Gateway with Python, Vector Search, and Interoperability in InterSystems Iris
Part 3 – REST and Interoperability
Now that we have finished the configuration of the SQL Gateway and we have been able to access the data from the external database via python, and we have set up our vectorized base, we can perform some queries. For this in this part of the article we will use an application developed with CSP, HTML and Javascript that will access an integration in Iris, which then performs the search for data similarity, sends it to LLM and finally returns the generated SQL. The CSP page calls an API in Iris that receives the data to be used in the query, calling the integration. For more information about REST in the Iris see the documentation available at https://docs.intersystems.com/irislatest/csp/docbook/DocBook.UI.Page.cls...
Using SQL Gateway with Python, Vector Search, and Interoperability in InterSystems Iris
Part 2 – Python and Vector Search
Since we have access to the data from our external table, we can use everything that Iris has to offer with this data. Let's, for example, read the data from our external table and generate a polynomial regression with it.
Let's now consume the data from the external database to calculate a polynomial regression. To do this, we will use a python code to run a SQL that will read our MySQL table and turn it into a pandas dataframe:
Hello, I have a problem with a call and I would need some help.
When I call an API with the SendFormDataArray method of the EnsLib.HTTP.OutboundAdapter adapter, I pass it a %Net.HttpRequest object and I receive the following error:
I have correctly entered the url in my business operation and I pass it in the last parameter of the SendFormDataArray method. Do you have any idea, please?
Using Flask, REST API, and IAM with InterSystems IRIS
Part 3 – IAM
InterSystems API Manager (IAM) is a component that allows you to monitor, control, and manage traffic from HTTP-based APIs. It also acts as an API gateway between InterSystems IRIS applications and servers.
I have set up an EnsLib.REST.GenericService with an EnsLib.HTTP.InboundAdapter which forwards the http requests received by a web app to my Business Process.
I would like to parse HTTP multipart/form messages I am receving and be able to iterate over the various fields within the request body, accessing its content type and the content itself.
As far as I understand I should use the %Net.MIMEReader class which should return a list of %Net.MIMEPart, one for each field within the request. However if I do :
I have a scenario where I send a GET request to a broker and receive a FHIR response. When I attempted to use the built-in InterSystems functions to convert this FHIR response into SDA, the transformation failed—likely because it is not a standard FHIR request.
How should I handle this situation? Is there a recommended approach to processing FHIR responses in this context?
Using Flask, REST API, and IAM with InterSystems IRIS
Part 2 – Flask App
Flask is a web development microframework written in Python. It is known for being simple, flexible, and enabling rapid application development.
Installing Flask is very simple. Once you have python installed correctly on your operating system, we need to install the flask library with the pip command. For REST API consumption, it is advisable to use the requests library. The following link provides a guide to installing flask: https://flask.palletsprojects.com/en/stable/installation/
I am trying to replicate a REST call that I am able to make via a Postman call within a EnsLib.REST.GenericOperation.
It's been a while since I have messed around with trying to make external REST calls. When I execute my REST call, tSC is coming back with an error and I am trying to pinpoint why. I tried turning on ISCLOG = 5 but when calling the REST Operation from the Testing tool it is not logging anything to the ISC log.
Is there a programmatic method or specific property to differentiate system-defined (/csp/altelier , /api/mgmnt and so on) or user-defined web applications in IRIS?
I have a rest API Class used for getting data from Cache 2018 version. I have single route '/callfuntions' I send the following parameters to the API :- className, methodName, params I use $CLASSMETHODto execute and send the result back to the client.
If I make more that 10 to 12 requests in quick succession, then it stops sending data.
By views
Open Exchange app
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