Package spark.utils

Class GzipUtils

java.lang.Object

spark.utils.GzipUtils

public class GzipUtils
extends java.lang.Object

GZIP utility class.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static class	GzipUtils.StringMatch	Used instead of lambdas due to risk for java.lang.IncompatibleClassChangeError.

Field Summary

Fields

Modifier and Type	Field	Description
private static java.lang.String	ACCEPT_ENCODING
private static java.lang.String	CONTENT_ENCODING
private static java.lang.String	GZIP
private static GzipUtils.StringMatch	STRING_MATCH

Constructor Summary

Constructors

Modifier	Constructor	Description
private	GzipUtils()

Method Summary

Modifier and Type	Method	Description
private static void	addContentEncodingHeaderIfMissing(javax.servlet.http.HttpServletResponse response, boolean wantsGzip)
static java.io.OutputStream	checkAndWrap(javax.servlet.http.HttpServletRequest httpRequest, javax.servlet.http.HttpServletResponse httpResponse, boolean requireWantsHeader)	Checks if the HTTP request/response accepts and wants GZIP and i that case wraps the response output stream in a GZIPOutputStream.

Methods inherited from class java.lang.Object

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

Field Detail

ACCEPT_ENCODING

private static final java.lang.String ACCEPT_ENCODING

See Also:

Constant Field Values

CONTENT_ENCODING

private static final java.lang.String CONTENT_ENCODING

See Also:

Constant Field Values

GZIP

private static final java.lang.String GZIP

See Also:

Constant Field Values

STRING_MATCH

private static final GzipUtils.StringMatch STRING_MATCH

Constructor Detail

GzipUtils

private GzipUtils()

Method Detail

checkAndWrap

public static java.io.OutputStream checkAndWrap(javax.servlet.http.HttpServletRequest httpRequest,
                                                javax.servlet.http.HttpServletResponse httpResponse,
                                                boolean requireWantsHeader)
                                         throws java.io.IOException

Checks if the HTTP request/response accepts and wants GZIP and i that case wraps the response output stream in a GZIPOutputStream.

Parameters:

httpRequest - the HTTP servlet request.

httpResponse - the HTTP servlet response.

requireWantsHeader - if wants header is required

Returns:

if accepted and wanted a GZIPOutputStream otherwise the unchanged response output stream.

Throws:

java.io.IOException - in case of IO error.

addContentEncodingHeaderIfMissing

private static void addContentEncodingHeaderIfMissing(javax.servlet.http.HttpServletResponse response,
                                                      boolean wantsGzip)