Script Handling

Description

This sample application makes use of ScriptHandler API to invoke and execute a script file. The script file can be invoked after plugging a scripting implementation into the RunScriptInterface. By default, Python and BeanShell scripting implementations are provided. It also provides facility to plug in custom scripting implementations.

Format

Usage: java ScriptHandlerExample scriptFile

Option

ScriptFile

Mandatory

The name of file that contains a script.

Note: M - Mandatory

Initially, import the following packages:

import com.adventnet.util.script.ScriptHandler;

import com.adventnet.cli.transport.TelnetProtocolOptionsImpl;

import java.util.*;

The main function contains the following declarations.

String usage = "java ScriptHandlerExample ScriptFile";

if (args.length < 1) {

System.err.println(" USAGE : "+usage);

The script file type and extension is required to use a proper scripting language as each scripting language has different file extension.

String scriptFile = args[0];

String scriptType = null;

StringTokenizer strTok = new StringTokenizer(scriptFile, ".");

if (strTok.countTokens()==2){

strTok.nextToken();

scriptType = strTok.nextToken();

}else{

System.err.println(" File name should have an extension.");

System.exit(1);

}

The script file is used to communicate with devices . Telnet is used as a default protocol option. The Telnet options include various connection parameters that can be set in script file.

String[] telnetOptions = new String[args.length-1];

After setting the Telnet options, the ScriptHandler can be used to execute a suitable scripting type.

ScriptHandler sh = new ScriptHandler();

sh.executeScriptFromFile(scriptFile,telnetOptions,scriptType);

The complete source code is available in <CLI Home>/examples/script directory.