Module org.elasticsearch.server

Package org.elasticsearch.bootstrap

Class BootstrapInfo

java.lang.Object

org.elasticsearch.bootstrap.BootstrapInfo

public final class BootstrapInfo
extends Object

Exposes system startup information

Field Summary

Fields

Modifier and Type	Field	Description
static final char	SERVER_READY_MARKER	A non-printable character denoting the server is ready to process requests.
static final char	SERVER_SHUTDOWN_MARKER	A non-printable character denoting the server should shut itself down.
static final String	UNTRUSTED_CODEBASE	codebase location for untrusted scripts (provide some additional safety)
static final char	USER_EXCEPTION_MARKER	A non-printable character denoting a UserException has occurred.

Method Summary

Modifier and Type	Method	Description
static ConsoleLoader.Console	getConsole()	Returns information about the console (tty) attached to the server process, or null if no console is attached.
static Dictionary<Object,Object>	getSystemProperties()	Returns a read-only view of all system properties
static void	init()
static boolean	isMemoryLocked()	Returns true if we were able to lock the process's address space.
static boolean	isNativesAvailable()	Returns true if we successfully loaded native libraries.
static boolean	isSystemCallFilterInstalled()	Returns true if system call filter is installed (supported systems only)

Methods inherited from class java.lang.Object

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

Field Details

UNTRUSTED_CODEBASE

public static final String UNTRUSTED_CODEBASE

codebase location for untrusted scripts (provide some additional safety)

This is not a full URL, just a path.

See Also:

• Constant Field Values

USER_EXCEPTION_MARKER

public static final char USER_EXCEPTION_MARKER

A non-printable character denoting a UserException has occurred. This is sent over stderr to the controlling CLI process.

See Also:

• Constant Field Values

SERVER_READY_MARKER

public static final char SERVER_READY_MARKER

A non-printable character denoting the server is ready to process requests. This is sent over stderr to the controlling CLI process.

See Also:

• Constant Field Values

SERVER_SHUTDOWN_MARKER

public static final char SERVER_SHUTDOWN_MARKER

A non-printable character denoting the server should shut itself down. This is sent over stdin from the controlling CLI process.

See Also:

• Constant Field Values

Method Details

isNativesAvailable

public static boolean isNativesAvailable()

Returns true if we successfully loaded native libraries.

If this returns false, then native operations such as locking memory did not work.

isMemoryLocked

public static boolean isMemoryLocked()

Returns true if we were able to lock the process's address space.

isSystemCallFilterInstalled

public static boolean isSystemCallFilterInstalled()

Returns true if system call filter is installed (supported systems only)

getConsole

@Nullable
public static ConsoleLoader.Console getConsole()

Returns information about the console (tty) attached to the server process, or null if no console is attached.

getSystemProperties

public static Dictionary<Object,Object> getSystemProperties()

Returns a read-only view of all system properties

init

public static void init()