com.hortonworks.registries.auth.util

Class Shell.ShellCommandExecutor

java.lang.Object

com.hortonworks.registries.auth.util.Shell

com.hortonworks.registries.auth.util.Shell.ShellCommandExecutor

Enclosing class:

Shell

public static class Shell.ShellCommandExecutor
extends Shell

A simple shell command executor. ShellCommandExecutorshould be used in cases where the output of the command needs no explicit parsing and where the command, working directory and the environment remains unchanged. The output of the command is stored as-is and is expected to be small.

Nested Class Summary

Nested classes/interfaces inherited from class com.hortonworks.registries.auth.util.Shell

Shell.ExitCodeException, Shell.ShellCommandExecutor

Constructor Summary

Constructors

Constructor and Description
ShellCommandExecutor(java.lang.String[] execString, long timeout) Create a new instance of the ShellCommandExecutor to execute a command.

Method Summary

Modifier and Type	Method and Description
protected java.lang.String[]	execString() Return an array containing the command name and its parameters
void	execute() Execute the shell command.
java.lang.String	output() Get the output of the shell command.
protected void	parseExecResult(java.io.BufferedReader reader) Parse the execution result
java.lang.String	toString() Returns the commands of this instance.

Methods inherited from class com.hortonworks.registries.auth.util.Shell

execCommand, execCommand, exitCode, process, run

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

ShellCommandExecutor

public ShellCommandExecutor(java.lang.String[] execString,
                            long timeout)

Create a new instance of the ShellCommandExecutor to execute a command.

Parameters:

execString - The command to execute with arguments

timeout - Specifies the time in milliseconds, after which the command will be killed. -1 means no timeout.

Method Detail

execute

public void execute()
             throws java.io.IOException

Execute the shell command.

Throws:

java.io.IOException

execString

protected java.lang.String[] execString()

Description copied from class: Shell

Return an array containing the command name and its parameters

Specified by:

execString in class Shell

parseExecResult

protected void parseExecResult(java.io.BufferedReader reader)
                        throws java.io.IOException

Description copied from class: Shell

Parse the execution result

Specified by:

parseExecResult in class Shell

Throws:

java.io.IOException

output

public java.lang.String output()

Get the output of the shell command.

toString

public java.lang.String toString()

Returns the commands of this instance. Arguments with spaces in are presented with quotes round; other arguments are presented raw

Overrides:

toString in class java.lang.Object

Returns:

a string representation of the object.