org.apache.ambari.server.utils

Interface ShellCommandUtil.InteractiveHandler

Enclosing class:

ShellCommandUtil

public static interface ShellCommandUtil.InteractiveHandler

InteractiveHandler is a handler for interactive sessions with command line commands.

Classes should implement this interface if there is a need to supply responses to queries from the executed command (interactively, via stdin).

Method Summary

Modifier and Type	Method and Description
boolean	done() Indicates whether this ShellCommandUtil.InteractiveHandler expects more queries (true or not (false)
String	getResponse(String query) Given a query, returns the relative response to send to the shell command (via stdin)
void	start() Starts or resets this handler.

Method Detail

done

boolean done()

Indicates whether this ShellCommandUtil.InteractiveHandler expects more queries (true or not (false)

Returns:

true if more queries are expected; false otherwise

getResponse

String getResponse(String query)

Given a query, returns the relative response to send to the shell command (via stdin)

Parameters:

query - a string containing the query that needs a response

Returns:

a string or null if no response is needed

start

void start()

Starts or resets this handler.

It is expected that the caller calls this before using handler.