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Chapter 8. ServiceNow Custom actions in Red Hat Developer Hub

Important

These features are for Technology Preview only. Technology Preview features are not supported with Red Hat production service level agreements (SLAs), might not be functionally complete, and Red Hat does not recommend using them for production. These features provide early access to upcoming product features, enabling customers to test functionality and provide feedback during the development process.

For more information on Red Hat Technology Preview features, see Technology Preview Features Scope.

In Red Hat Developer Hub, you can access ServiceNow custom actions (custom actions) for fetching and registering resources in the catalog.

The custom actions in Developer Hub enable you to facilitate and automate the management of records. Using the custom actions, you can perform the following actions:

Create, update, or delete a record
Retrieve information about a single record or multiple records

8.1. Enabling ServiceNow custom actions plugin in Red Hat Developer Hub
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In Red Hat Developer Hub, the ServiceNow custom actions are provided as a pre-loaded plugin, which is disabled by default. You can enable the custom actions plugin using the following procedure.

Prerequisites

Red Hat Developer Hub is installed and running. For more information about installing the Developer Hub, see Chapter 2, Installing Red Hat Developer Hub using Helm Chart.
You have created a project in the Developer Hub.

Procedure

To activate the custom actions plugin, add a package with plugin name and update the disabled field in your Helm Chart as follows:

global:
  dynamic:
    includes:
      - dynamic-plugins.default.yaml
    plugins:
      - package: ./dynamic-plugins/dist/janus-idp-backstage-scaffolder-backend-module-servicenow-dynamic
        disabled: false

global:
  dynamic:
    includes:
      - dynamic-plugins.default.yaml
    plugins:
      - package: ./dynamic-plugins/dist/janus-idp-backstage-scaffolder-backend-module-servicenow-dynamic
        disabled: false

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Note

The default configuration for a plugin is extracted from the dynamic-plugins.default.yaml file, however, you can use a pluginConfig entry to override the default configuration.

Set the following variables in the Helm Chart to access the custom actions:

servicenow:
  # The base url of the ServiceNow instance.
  baseUrl: ${SERVICENOW_BASE_URL}
  # The username to use for authentication.
  username: ${SERVICENOW_USERNAME}
  # The password to use for authentication.
  password: ${SERVICENOW_PASSWORD}

servicenow:
  # The base url of the ServiceNow instance.
  baseUrl: ${SERVICENOW_BASE_URL}
  # The username to use for authentication.
  username: ${SERVICENOW_USERNAME}
  # The password to use for authentication.
  password: ${SERVICENOW_PASSWORD}

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8.2. Supported ServiceNow custom actions in Red Hat Developer Hub
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The ServiceNow custom actions enable you to manage records in the Red Hat Developer Hub. The custom actions support the following HTTP methods for API requests:

GET: Retrieves specified information from a specified resource endpoint
POST: Creates or updates a resource
PUT: Modify a resource
PATCH: Updates a resource
DELETE: Deletes a resource

8.2.1. ServiceNow custom actions
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[GET] servicenow:now:table:retrieveRecord

Retrieves information of a specified record from a table in the Developer Hub.

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Table 8.1. Input parameters
Name	Type	Requirement	Description
`tableName`	`string`	Required	Name of the table to retrieve the record from
`sysId`	`string`	Required	Unique identifier of the record to retrieve
`sysparmDisplayValue`	`enum("true", "false", "all")`	Optional	Returns field display values such as `true`, actual values as `false`, or both. The default value is `false`.
`sysparmExcludeReferenceLink`	`boolean`	Optional	Set as `true` to exclude Table API links for reference fields. The default value is `false`.
`sysparmFields`	`string[]`	Optional	Array of fields to return in the response
`sysparmView`	`string`	Optional	Renders the response according to the specified UI view. You can override this parameter using `sysparm_fields`.
`sysparmQueryNoDomain`	`boolean`	Optional	Set as `true` to access data across domains if authorized. The default value is `false`.

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Table 8.2. Output parameters
Name	Type	Description
`result`	`Record<PropertyKey, unknown>`	The response body of the request

[GET] servicenow:now:table:retrieveRecords

Retrieves information about multiple records from a table in the Developer Hub.

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Table 8.3. Input parameters
Name	Type	Requirement	Description
`tableName`	`string`	Required	Name of the table to retrieve the records from
`sysparamQuery`	`string`	Optional	Encoded query string used to filter the results
`sysparmDisplayValue`	`enum("true", "false", "all")`	Optional	Returns field display values such as `true`, actual values as `false`, or both. The default value is `false`.
`sysparmExcludeReferenceLink`	`boolean`	Optional	Set as `true` to exclude Table API links for reference fields. The default value is `false`.
`sysparmSuppressPaginationHeader`	`boolean`	Optional	Set as `true` to suppress pagination header. The default value is `false`.
`sysparmFields`	`string[]`	Optional	Array of fields to return in the response
`sysparmLimit`	`int`	Optional	Maximum number of results returned per page. The default value is `10,000`.
`sysparmView`	`string`	Optional	Renders the response according to the specified UI view. You can override this parameter using `sysparm_fields`.
`sysparmQueryCategory`	`string`	Optional	Name of the query category to use for queries
`sysparmQueryNoDomain`	`boolean`	Optional	Set as `true` to access data across domains if authorized. The default value is `false`.
`sysparmNoCount`	`boolean`	Optional	Does not execute a select count(*) on the table. The default value is `false`.

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Table 8.4. Output parameters
Name	Type	Description
`result`	`Record<PropertyKey, unknown>`	The response body of the request

[POST] servicenow:now:table:createRecord

Creates a record in a table in the Developer Hub.

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Table 8.5. Input parameters
Name	Type	Requirement	Description
`tableName`	`string`	Required	Name of the table to save the record in
`requestBody`	`Record<PropertyKey, unknown>`	Optional	Field name and associated value for each parameter to define in the specified record
`sysparmDisplayValue`	`enum("true", "false", "all")`	Optional	Returns field display values such as `true`, actual values as `false`, or both. The default value is `false`.
`sysparmExcludeReferenceLink`	`boolean`	Optional	Set as `true` to exclude Table API links for reference fields. The default value is `false`.
`sysparmFields`	`string[]`	Optional	Array of fields to return in the response
`sysparmInputDisplayValue`	`boolean`	Optional	Set field values using their display value such as `true` or actual value as `false`. The default value is `false`.
`sysparmSuppressAutoSysField`	`boolean`	Optional	Set as `true` to suppress auto-generation of system fields. The default value is `false`.
`sysparmView`	`string`	Optional	Renders the response according to the specified UI view. You can override this parameter using `sysparm_fields`.

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Table 8.6. Output parameters
Name	Type	Description
`result`	`Record<PropertyKey, unknown>`	The response body of the request

[PUT] servicenow:now:table:modifyRecord

Modifies a record in a table in the Developer Hub.

Expand

Table 8.7. Input parameters
Name	Type	Requirement	Description
`tableName`	`string`	Required	Name of the table to modify the record from
`sysId`	`string`	Required	Unique identifier of the record to modify
`requestBody`	`Record<PropertyKey, unknown>`	Optional	Field name and associated value for each parameter to define in the specified record
`sysparmDisplayValue`	`enum("true", "false", "all")`	Optional	Returns field display values such as `true`, actual values as `false`, or both. The default value is `false`.
`sysparmExcludeReferenceLink`	`boolean`	Optional	Set as `true` to exclude Table API links for reference fields. The default value is `false`.
`sysparmFields`	`string[]`	Optional	Array of fields to return in the response
`sysparmInputDisplayValue`	`boolean`	Optional	Set field values using their display value such as `true` or actual value as `false`. The default value is `false`.
`sysparmSuppressAutoSysField`	`boolean`	Optional	Set as `true` to suppress auto-generation of system fields. The default value is `false`.
`sysparmView`	`string`	Optional	Renders the response according to the specified UI view. You can override this parameter using `sysparm_fields`.
`sysparmQueryNoDomain`	`boolean`	Optional	Set as `true` to access data across domains if authorized. The default value is `false`.

Expand

Table 8.8. Output parameters
Name	Type	Description
`result`	`Record<PropertyKey, unknown>`	The response body of the request

[PATCH] servicenow:now:table:updateRecord

Updates a record in a table in the Developer Hub.

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Table 8.9. Input parameters
Name	Type	Requirement	Description
`tableName`	`string`	Required	Name of the table to update the record in
`sysId`	`string`	Required	Unique identifier of the record to update
`requestBody`	`Record<PropertyKey, unknown>`	Optional	Field name and associated value for each parameter to define in the specified record
`sysparmDisplayValue`	`enum("true", "false", "all")`	Optional	Returns field display values such as `true`, actual values as `false`, or both. The default value is `false`.
`sysparmExcludeReferenceLink`	`boolean`	Optional	Set as `true` to exclude Table API links for reference fields. The default value is `false`.
`sysparmFields`	`string[]`	Optional	Array of fields to return in the response
`sysparmInputDisplayValue`	`boolean`	Optional	Set field values using their display value such as `true` or actual value as `false`. The default value is `false`.
`sysparmSuppressAutoSysField`	`boolean`	Optional	Set as `true` to suppress auto-generation of system fields. The default value is `false`.
`sysparmView`	`string`	Optional	Renders the response according to the specified UI view. You can override this parameter using `sysparm_fields`.
`sysparmQueryNoDomain`	`boolean`	Optional	Set as `true` to access data across domains if authorized. The default value is `false`.

Expand

Table 8.10. Output parameters
Name	Type	Description
`result`	`Record<PropertyKey, unknown>`	The response body of the request

[DELETE] servicenow:now:table:deleteRecord

Deletes a record from a table in the Developer Hub.

Expand

Table 8.11. Input parameters
Name	Type	Requirement	Description
`tableName`	`string`	Required	Name of the table to delete the record from
`sysId`	`string`	Required	Unique identifier of the record to delete
`sysparmQueryNoDomain`	`boolean`	Optional	Set as `true` to access data across domains if authorized. The default value is `false`.

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Chapter 8. ServiceNow Custom actions in Red Hat Developer Hub

8.1. Enabling ServiceNow custom actions plugin in Red Hat Developer Hub
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8.2. Supported ServiceNow custom actions in Red Hat Developer Hub
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8.2.1. ServiceNow custom actions
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8.2. Supported ServiceNow custom actions in Red Hat Developer HubCopiar enlaceEnlace copiado en el portapapeles!

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8.1. Enabling ServiceNow custom actions plugin in Red Hat Developer Hub
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8.2. Supported ServiceNow custom actions in Red Hat Developer Hub
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8.2.1. ServiceNow custom actions
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