Servicenow scripted rest api examples

These take the place where Processors were used previously but have a richer feature set and more flexibility. Based on your currently selected application scope, it will automatically choose that application and namespace which corresponds to your scope identifier. Finally, you can set a protection policy to use no protection, make it read-only or protected.

After saving or submitting, you will see the Base API path that was created for you. Upon creating a new resource, you will be asked for the name of the resource, the HTTP method or verb used to access it, and the relative path.

B The relative path can be arbitrarily complex and as in this screenshot, can contain multiple levels of path. You are not limited to a single level. In addition, you can define path parameters as part of this relative path.

Any parameter defined as part of the path as in the example will then be available to the scripting environment. The bracketed text will become a variable that is available from the request. More on this later. This allows you to use the style of a single endpoint with multiple verbs where. This allows you to create a simple externally facing interface that conforms to the style that other systems expect. Associated with every resource is a scripting window.

The context of the script window provides a request and response object. As part of the Geneva enhancements you will be able to see all the methods available on these objects using the autocomplete functionality.

The main functionality provided by the request object is the hashes for pathParams and queryParams. The response object allows for low level control of the return, including manipulating headers, status codes, and the stream writer of the response itself.

Inside this scripting environment, you have full control over the system up to the limits of the scope, with access to GlideRecord, GlideSystem and the functionality you would expect in a scripting environment.

This allows you to within a scoped application expose any functionality that the scope can access through the system. Although the scoped application would own the REST API endpoints, the functionality can be anything allowed in that scope and does not need to be confined to records within that scope. You will be presented with an interface to pick the Namespace, the API, the version and which resource to access.

If the endpoint has path parameters defined there will be fields to enter those, and also the ability to add arbitrary query parameters to the request. Additionally, you can manipulate the headers such as the request and response data formats, and as well can add arbitrary headers if you desire.

servicenow scripted rest api examples

Sending the request will then display the return value. If you did everything correctly, you will see a status of and the data you expected.This example demonstrates how to use a script include to provide a response. By using a script include you can reuse common code and maintain readability in the REST service scripts. This example demonstrates how to parse a POST message with a string body and send a response based on the request.

This example demonstrates how to parse a POST message with a binary body and send a response based on the request. This example demonstrates how to respond with a not acceptable error. Use this error type when the request Accept header value is not supported by the web service. This example demonstrates how to respond with a bad request error. Use this error type to indicate a mistake in the request syntax. This example demonstrates how to respond with a conflict error. Use this error type in the event of multiple conflicting requests, such as multiple updates to the same record.

This example demonstrates how to respond with a not found error. Use this error type if the requested resource does not exist or is unavailable. This example demonstrates how to respond with an unsupported media type error. Use this error type to indicate that the Content-Type of the request is unsupported. This example demonstrates how to respond with a generic service error. The ServiceError object allows you to define the status code, message, and error detail. Use a ServiceError if the predefined error types do not meet your needs.

Query parameters GET example This example demonstrates how to get query parameter values from a request. ServiceError ; myError. Table 1.GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. If nothing happens, download GitHub Desktop and try again.

If nothing happens, download Xcode and try again. If nothing happens, download the GitHub extension for Visual Studio and try again. This project contains source code for a Node. The simple use case is a "MyWork" application which displays a user's current tasks and allows comments to be added.

This application demonstrates how to build the MyWork app using Node. Here is an overview of the MyWork application architecture. Note both this Node. By default the Node application will listen for requests on localhost port Dispatchers handle interaction between Node and the ServiceNow instance. After starting the Node. Enter the user ID and password for a user on the instance.

This application could also be refactored so that the API calls would be made from the client such as using AJAXbut that was not the intention of this example application.

servicenow scripted rest api examples

On failure, the user is directed to the login page to reenter credentials. After login, the application displays the tasks assigned to the user grouped by task type. Comments can be added to a task and will appear on the work notes for the task both in this application as well as within ServiceNow.

Scripted REST API

On the client side, the application uses AngularJS for client side scripting and interaction with the Node. Each page is associated with an Angular controller. The dispatcher handles calls to 3 endpoints.We are experimenting with new training content delivery methods. This tutorial blog post is one of those experiments. We are very interested in your feedback. Please let us know what you think about this format and the content in the comments below.

Scripts - Background was this magical place in the platform where you could run any server-side script. It became my testing ground for any server-side method I wanted to learn about or new script I wanted to test because I did not need to configure When to run logic around it like a Business Rule. Running a script in Scripts - Background was as easy as putting a script in the field and clicking the Run script button.

I will admit that for most scripts I need to run on an instance these days, I prefer other ways to execute my scripts over Scripts - Background. Syntax highlighting and checking are just too helpful for me to pass up if I have access to them. The value of Scripts - Background lies in its simplicity.

No need to create a record. Just write or paste in a script and run it. Free-form JavaScript can negatively impact data and system performance. In this post, you learn how to work with Scripts - Background to add some demo data. You also learn how to work with the rollback capability to remove the demo data.

Execute in sandbox? Refer to the documentation on The script sandbox property for details on what methods are restricted. Executing in sandbox can prevent potentially harmful methods from running, but could prevent the script from its intended purpose. This example shows the messages logged when insert methods are run in sandbox. Cancel after 4 hours : Cancel long running scripts after 4 hours. Keep this selected unless you are sure your script needs more time.

Even then, you should consider breaking up the work into smaller chunks. In this section of the tutorial, you run a script in Scripts - Background to create some sample user records. Copy this script and paste it into the Run Script JavaScript executed on server field. If the Record for rollback?

Access the Script Execution History from the Scripts - Background results by clicking available here in the Script execution history and recovery available here message. Confirm the rollback. After that, the execution history is no longer available to view or roll back. Did you do the hands-on exercise in this blog? Click here to let us know! If you have taken training on the Developer Portal, you should have the NeedIt application and table.

Use what you have learned about Scripts - Background here to create some new NeedIt records. Log details for the records created. Scheduled Script Executions have these benefits:. On the downside: rollback is not available for these script types. Regardless of how you execute a script on the ServiceNow platform, proceed with caution.

Here is a possible answer for the Challenge. Powered by Hugo. Run Script : Button to run the script. Scope selector : Choice list of application scopes.The tool on the download page has also been updated to version 2.

Scripted REST APIs have only become available fairly recently in the Geneva release of ServiceNowand are something that a lot of developers have been avoiding, as they're new and arcaneand the documentation around them is still fairly new, and not very well built-out. In this article, we're going to learn how to create our own custom scripted REST API, which we'll use for our demo project: Retrieving the service catalog variables associated with a given RITM, for reporting in an external system.

Pro Tip : If you came here just wanting to deploy this functionality, skip to the bottom of this article, where you'll find information on obtaining a pre-built update set that you can deploy into your instance to enable retrieving catalog item variables via REST!

Before we get started, I want to quickly make clear what is, and is not, available in ServiceNow by default. However, if you're on Helsinkithere is a " Service Catalog REST API ", which allows you to do things like add a catalog item to a cart, update a cart, delete a catalog item from a cart, submit a cart, submit a record producer, and loads more. This is not mentioned in any of the documentation that I've foundand I only learned about it by exploring in my developer instance while writing this article!

So if you are just trying to submit catalog items via REST, now you know! There's a way and a very robust way at that to do it in Helsinki. I'm not going to go into great depth here about REST, but suffice it to say that REST is a stateless, cacheable "language" that clients and servers can use to talk to one another, and pass data back and forth. REST requests have a few key components:.

In fact, it is a web address! If you were to take a simple rest GET request for example, and put it into your browser's URL bar, you would get the results of that request in your browser window!

Request Header : This is a set of key-value pairs attached to the request, and is not unlike the header on a webpage. It contains some metadata about the request, such as an authorization token, what "language" Content-Type the request is in, and what Content-Type the request will accept a response in.

Request Body : The Body of the request is where the bulk of the data can be found. If you're sending a " POST " request for example, which might generate a record on a server, the body of the request might contain the contents of the record to be created. Similar to how variables work in javascript, request headers, parameters, and the request body can be used to pass data between the client and server.

There are a few simple tools that you can use to build REST requests. Right away, you'll notice some significant differences, depending on whether you're in Geneva, or Helsinki or later. In this article, I'm going to be focusing on the Geneva functionality, because it requires more manual work.

It should be almost the same, but a smidge easier, in Helsinki. The code will be the same. The related lists represent REST resources, headers, and query parameters described above. As we build a scripted API to send over the variables and variable values associated with a given request item, we'll need to create a way for the requestor to pass in the RITM ticket numbers they'd like to retrieve the variables for. To create a request header, simply select the related list, and click New.

I created one that looks like this:. As you can see from the example value, I'm allowing the user to pass in multiple ticket numbers, or just one. The list should be comma-separated.

Scripted REST APIs

And that's pretty much all the data we need from the user for this Scripted REST Service - so let's define our resource. This is done from the Request Header Associations related list.

servicenow scripted rest api examples

Now all we have to do is define a script which will get the request headerand define the response so that it contains the results that the requestor is looking for. When you create a new resource, you'll be given a script stub that looks something like this:.

From this, we can learn a few things about how this all works -- for example, we can use request. You can read through the code comments to get a really good sense of what's going on, but basically this script just grabs the value associated with the request header from the request that triggered the REST service to run, then queries the database for the values of the variables associated with the RITMs listed in that header. Once it has them, it returns all the variables and values that have been populated as an object which, in JSONis returned as the body of the response back to the requestor.

And that's about all there is to it! You can access this API using a tool like the one I mentioned near the beginning of this article, by using a request like this:. If you were to run a request like the one above against an instance that had this scripted REST API enabled, you would get a response that looked something like this:.So, what should we do next? Before starting down the path of more complex debugging techniques, check the basics. Take a look at the records in a list or form view and make sure they are what you think they are.

Do you see every incident in a list view that you expect to see? Next, impersonate the user used to make API calls. In this example, the incident count went down to Clearly something is filtering the results. With these debug options enabled, navigate to a list or form view and examine the output at the bottom of the screen.

This explains why we can see the records as admin, but we cannot see the records from our integration user. This will open the Log Tailer interface. Use these lines to examine the details of the incoming request. A few words of warning about the Log File Tailer:. When you write gs. If you want to see these debug messages, you must first enable session debugging.

This increases the logging verbosity for the duration of your current session. It executes before query. We trigger the rule by initiating a GET request. When you enable session debugging, as the name suggests, debugging is a enabled for your current session.

Open Chrome Developer Tools. Navigate to the Application tab and inspect your cookies. Look for this line:. We can construct the request. Start with the basics. I covered Business Rule and Security Debugging, but there are other session debug options to explore. Check out the other options under the Session Debug menu for additional kinds of output.

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Servicenow Scripted REST API Multiple Post

Validate assumptions Before starting down the path of more complex debugging techniques, check the basics. Examine the node log file. A few words of warning about the Log File Tailer: Do not use in production Only keep the tailer window open for a short period of time 3. Using External API Testing Tools When you enable session debugging, as the name suggests, debugging is a enabled for your current session. Look for this line: This is your current session token.

Copy the value in quotes and set it aside for the next step.Some of the biggest companies in the world are either already using it, planning on switching to it, or need to integrate more into it. Solutions like Rubrik do a great job of pre-building backup protection, monitoring, and recovery workflows into SNOW so you can protect VMs and recover files all within the ticket workflow. Read more here. Thankfully SNOW offers 2 methods. With your client ID and secret, you can now run the below script.

The script will prompt you for both your credentials, the client ID and secret, then save them securely in an XML file for subsequent runs. To change the credentials, delete the XML files:. The world is your oyster at this point, but to give you a little taste of the possibilities, paste the below into either script to create an incident:.

There you go! You can now use this script to integrate SNOW into whatever you need. If you found this useful please like, share, and follow me on twitter joshuastenhouse.

Happy scripting. Published in PowerShell 6. This site uses Akismet to reduce spam. Learn how your comment data is processed. Like this: Like Loading Leave a Reply Cancel reply. Sorry, your blog cannot share posts by email.


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