Script to Trigger Quick Discovery from Workflow / Flow (#1100)

* README.md

* Script to trigger quick discovery

Script to trigger quick discovery from workflow or flow

* README.md

Updated the README.md file

Author: selvarun-umass

ITOM/Discovery/README.md

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+This code snippet automates the discovery of devices in ServiceNow using MID (Management, Instrumentation, and Discovery) servers by triggering Quick Discovery through a workflow. The code can also be modified for different workflows/ flows as needed.
+
+Key features include:
+
+MID Server Setup: It defines two MID servers to ensure redundancy, which improves the chances of successfully finding devices.
+
+IP Address Retrieval: The code retrieves the IP address to be scanned from the current workflow context.
+
+Discovery Process:
+
+It creates a Discovery object to initiate the process. The script first attempts to find the device using the first MID server. If that fails, it logs a message and tries again with the second MID server. Logging and Status Update: After the discovery attempts, the script logs the results and updates the current context with the discovery status.
+
+This code enhances device discovery in ServiceNow, making the process more reliable by utilizing multiple MID servers.

ITOM/Discovery/Script to trigger quick discovery from workflow or flow.js

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+var midServer1 = 'SNOWMIDPRD01'; // Rename/input your MID server as per your organization
+var midServer2 = 'SNOWMIDPRD02'; // Rename/input your second MID server accordingly
+var ipAddressScan = current.variables.ip_address; // IP address to scan
+var discovery = new Discovery(); // Create a new Discovery object
+
+// Attempt discovery using the first MID Server
+workflow.scratchpad.statusID = discovery.discoveryFromIP(ipAddressScan, midServer1);
+
+// If the first attempt was unsuccessful, try the second MID Server
+if (workflow.scratchpad.statusID == null) {
+    gs.info('Discovery using ' + midServer1 + ' failed. Trying ' + midServer2);
+    workflow.scratchpad.statusID = discovery.discoveryFromIP(ipAddressScan, midServer2);
+}
+
+// Log the results
+gs.log('DiscoveryStatusId: ' + workflow.scratchpad.statusID);
+gs.log('QuickDiscoveryIPAddress: ' + ipAddressScan);
+current.variables.discovery_status = workflow.scratchpad.statusID;