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AVEVA Enterprise SCADA BLT API Reference

Add components for deployment

For more information on overriding the default configurations of the Business Logic Tier (BLT) components, contact AVEVA Customer Support.

Each BLT application is configured using a JSON configuration file located in either the default install root (%DNAInstallRoot%) or the custom data root (%DNADataRoot%). Each configuration file must follow a naming convention, that is, \<BLTHostAppName>.json.

Where:

  • BLTHostAppName is the application name.

For instance, the Arbitration BLT components are configured as one application in the Arbitration.json file, which is found in the %DNAInstallRoot%\Common\config\BLT directory.

The following procedure details how to customize the configuration of a BLTHost application.

To add components for deployment

  1. From the %DNADataRoot%\<Silo>\config\BLT directory, create or edit a <BLTHostAppName>.json file.
  2. Add the following lines to the <BLTHostAppName>.json file.
    Where:
    • The outer most key (that is, bobjNewComponent.dll) is the file name containing one or more BLT components.
    • The inner key (that is, NewComponent) is the name of the BLT component to be configured.
      The inner key value is a list of permissions required to invoke the BLT.
    {
    "bobjNewComponent1.dll":
    {
    "NewComponent1": [ "DNA Permission - View"]
    },
    "bobjNewComponent2.dll":
    {
    "NewComponent2": [ "DNA Permission - View"]
    }
  3. Save the file.
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