Examples of EVAL scripts used in Discovery patterns - Support and Troubleshooting

Examples of EVAL scripts used in Discovery patterns Issue Overview

Service Mapping and Discovery use patterns to discover or map devices and applications in your organization. When you create or modify a pattern using the Pattern Designer, you can use EVAL scripts in pattern steps to evaluate strings in fields.

Use the eval() function for JavaScript as a parameter value.

This article describes how to apply EVAL scripts and provides examples of the most popular EVAL scripts for Java and for Groovy.

Resolution Procedure

Type EVAL( and click the Edit icon next to the field. In the EVAL Script Editor window, ensure that the JavaScript mode is on or click Other for other types of scripts like Groovy.

Type the script in the editor pane. If necessary, use the Search , Replace , and Format buttons to modify the script. Linting and highlighting is available for JavaScript. Click Apply .

Examples of the most popular EVAL scripts for Java

To get device information via switch

rtrn = ""; var type = ${proc_scsi_table_disk[].type}; >switch (type){ case "cdrom": rtrn = "cd"; break; case "CD-ROM": rtrn = "cd"; break; case "Direct-Access": rtrn = "disk"; break; default: rtrn = "logical"; } )

To change a list to a string

var rtrn = ""; var array = ${temp_description}; var i; for (i=0; i rtrn = rtrn + " \n" + array.get(i);

To replace a string

var name =${dep_app1[].name}; var rtrn; rtrn= name.replace('_','#');

To remove duplicates from a table by checking the specific name and version

var tableWithoutDuplicates = ''; tableWithoutDuplicates = DuplicateRemover.removeDuplicates(${PKG},["name","version"]); CTX.setAttribute("PKG", tableWithoutDuplicates);

To remove duplicates from a table by checking the specific VIP server IP and serverPort

var tableWithoutDuplicates = ''; tableWithoutDuplicates = DuplicateRemover.removeDuplicates(${vserverServiceTable},["vsvrName","serverIP", "serverPort"]); CTX.setAttribute("vserverServiceTable", tableWithoutDuplicates);

To format the system name var rtrn = ''; var hostnameFormatter = new Packages.com.glide.util.HostnameFormatter(${fqdnRegex}); hostnameFormatter.setCase(${hostnameCase}); hostnameFormatter.setIncludeDomain(${shouldIncludeDomain}=="true"); var formattedHostname = hostnameFormatter.format(${sysName}); rtrn = (formattedHostname)?formattedHostname.fFormattedName:''; To set the right status ID for the device for a failover var rtrn = ''; if (${failureStatusId}=='0' || ${failureStatusId}=='1') { rtrn='1'; } else { rtrn='2'; } To set the information (all interfaces) in one line var rtrn = ''; var interfaces = ${IfTable[*].info}.toArray(); var line; var i; for ( i = 0; i To set a command to run all loadbalancer servers

var rtrn = ''; var command = "show lb vserver " + ${vserversTable[].vsvrName}; var rule_def = CTX.getCommandManager().shellCommand(command, false, null, null, CTX); rtrn = rule_def;

To get information on all pool members

var rtrn = ''; try{ var command = "list sys db bigpipe.displayservicenames | grep value" dummy= CTX.getCommandManager().shellCommand(command, false, null, null, CTX); stat=dummy.split('"')[1] var command = "modify sys db bigpipe.displayservicenames value false" dummy= CTX.getCommandManager().shellCommand(command, false, null, null, CTX); var command = "list ltm pool all members | grep -e 'ltm pool' ':' 'address' 'state'"; var members_def = CTX.getCommandManager().shellCommand(command, false, null, null, CTX); var command = "modify sys db bigpipe.displayservicenames value " + stat dummy = CTX.getCommandManager().shellCommand(command, false, null, null, CTX); rtrn = members_def; } catch (e) {}

To get clean sort description

var rtrn = ""; var array = ${temp_description}; var i; for (i=0; i To get the information on the edition of an application device var table = CTX.getAttribute("component[*].str").toArray(); var edition; for (var i =0; i -1) edition = "Suite"; else if (comp.indexOf("cluster") > -1) edition = "Enterprise"; else edition = "Standard"; } edition;

To translate a numeric MAC address to a standard format

This eval script fixes the MAC address to the correct string (00:50:56:90:8B:16).

var mac = "005056908B16"; mac_array = mac.match(/../g); std_format_mac = mac_array.join(":");

Examples of the most popular EVAL scripts for Groovy

To remove new lines and spaces from a table

This eval script removes \n and the spaces from a table.

virtual_server = ${servers_groups_table[].servers_ports}; virtual_server = virtual_server.replaceAll('\\n','&') virtual_server = virtual_server.replaceAll('\\s+',' ') virtual_server = virtual_server.replaceAll('&','\\\n')

return virtual_server

To get information with delimiter to split lines This eval script gets the information with a delimiter to split the lines. This information can be used later for parsing. arry = ${vserverFull[*].info} str = "" for (i=0;i To get the discovery type

You can use this information later for finding the pattern run time.

ctx.getWork().getDiscoveryType();

To determine a sudo user

You can use this script to find the privileged command to use.

return ${ctx}.getDiscoveryProvider(com.snc.sw.dto.ProviderType.SSH).getPrivilegedCommand();

To transform an application path into a Windows path

Replace forward slash with a backward slash .

${dep_apps[].appdir}.replace('/',${fs})

To replace WAR files with weblogic.xml information

This eval script transforms files to folders after running the Weblogic.xml and removes the .war from the weburi Filed.

return ${uri_table[].forEach}.replace(${substr},'')

To iterate over a table and execute a shell command for each row

This eval script is added to a transform table operation, where the same table (war[]) is used as the source and target field.

try { return com.snc.sw.commands.SshCommand.getSSHProvider(ctx).execCommand(${war[].command}); } catch (Exception e) { return \"None\”; }