Configuring the gateway to produce JSON data

To configure the gateway to produce JSON data, use the following steps:

Edit the gateway configuration in the following gateway properties file:
$OMNIHOME/gates/<arch>/G_XML.props

Where <arch> is the architecture directory, for example linux2x86.

Set Gate.XMLGateway.TransformerInputType to json:

Gate.XMLGateway.TransformerFile      : '$OMNIHOME/java/conf/transformers.xml'
Gate.XMLGateway.TransformerInputType : 'json'

Make the following configuration settings in the transformer file:

Configure the host and port to be consistent with the host and port in the httpTransport.properties file.

<tns:transformer name="netcoolEvents" type="northbound" endpoint="http://host:port/" className="com.ibm.tivoli.netcool.integrations.transformer.EmptyTransformer">
</tns:transformer>

If Message Bus Probe is run as the consumer for JSON formatted events sent from this gateway, the probe's transformer file requires the following configuration:

<tns:transformer name="netcool2nvpairs" type="southbound" endpoint="http://host:port/" className="com.ibm.tivoli.netcool.integrations.transformer.XSLTTransformer"> 
	<tns:property name="xsltFilename" type="java.lang.String" value="${OMNIHOME}/java/conf/netcool2nvpairs.xsl" description="XSLT file for converting Netcool events to name/value pairs"/> 
</tns:transformer>

Configure the transport properties.
1. For the HTTP transport, edit the following transport properties file:
  $OMNIHOME/java/conf/httpTransport.properties
  
  The following configuration is the minimum requirement when batch mode is ON with the JSON payload. By default, batch mode is ON with bufferSize=10. To disable batch mode, set bufferSize=1. All other property values in the default httptransport.properties file already include the minimum requirement for single JSON event functionality:
```
bufferSize=15
bufferFlushTime=30
batchHeader=[
batchFooter=]
batchSeparator=,
```
2. For the File transport, edit the following transport properties file:
  $OMNIHOME/java/conf/filetransport.properties
  In this file, the client should also be set to read from the JSON file:
```
jsonFilename=${OMNIHOME}/var/jsonAlarm.txt
```
Note: The configuration in all other transports remains unchanged.