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HADOOP-11231. Remove dead code in ServletUtil. Contributed by Li Lu.

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This commit is contained in:
Haohui Mai 2014-10-24 14:19:52 -07:00
parent f81dc3f995
commit dc6e819ed8
2 changed files with 2 additions and 81 deletions
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2
hadoop-common-project/hadoop-common/CHANGES.txt
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@ -359,6 +359,8 @@ Release 2.7.0 - UNRELEASED
HADOOP-11172. Improve error message in Shell#runCommand on OutOfMemoryError.
(Yongjun Zhang via wang)
HADOOP-11231. Remove dead code in ServletUtil. (Li Lu via wheat9)
OPTIMIZATIONS
BUG FIXES

81
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/ServletUtil.java
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@ -23,8 +23,6 @@
import javax.servlet.*;
import javax.servlet.http.HttpServletRequest;
import org.apache.commons.httpclient.URIException;
import org.apache.commons.httpclient.util.URIUtil;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
@ -87,85 +85,6 @@ public static long parseLongParam(ServletRequest request, String param)
public static String htmlFooter() {
return HTML_TAIL;
}
/**
* Generate the percentage graph and returns HTML representation string
* of the same.
*
* @param perc The percentage value for which graph is to be generated
* @param width The width of the display table
* @return HTML String representation of the percentage graph
* @throws IOException
*/
public static String percentageGraph(int perc, int width) throws IOException {
assert perc >= 0; assert perc <= 100;
StringBuilder builder = new StringBuilder();
builder.append("<table border=\"1px\" width=\""); builder.append(width);
builder.append("px\"><tr>");
if(perc > 0) {
builder.append("<td cellspacing=\"0\" class=\"perc_filled\" width=\"");
builder.append(perc); builder.append("%\"></td>");
}if(perc < 100) {
builder.append("<td cellspacing=\"0\" class=\"perc_nonfilled\" width=\"");
builder.append(100 - perc); builder.append("%\"></td>");
}
builder.append("</tr></table>");
return builder.toString();
}
/**
* Generate the percentage graph and returns HTML representation string
* of the same.
* @param perc The percentage value for which graph is to be generated
* @param width The width of the display table
* @return HTML String representation of the percentage graph
* @throws IOException
*/
public static String percentageGraph(float perc, int width) throws IOException {
return percentageGraph((int)perc, width);
}
/**
* Escape and encode a string regarded as within the query component of an URI.
* @param value the value to encode
* @return encoded query, null if the default charset is not supported
*/
public static String encodeQueryValue(final String value) {
try {
return URIUtil.encodeWithinQuery(value, "UTF-8");
} catch (URIException e) {
throw new AssertionError("JVM does not support UTF-8"); // should never happen!
}
}
/**
* Escape and encode a string regarded as the path component of an URI.
* @param path the path component to encode
* @return encoded path, null if UTF-8 is not supported
*/
public static String encodePath(final String path) {
try {
return URIUtil.encodePath(path, "UTF-8");
} catch (URIException e) {
throw new AssertionError("JVM does not support UTF-8"); // should never happen!
}
}
/**
* Parse and decode the path component from the given request.
* @param request Http request to parse
* @param servletName the name of servlet that precedes the path
* @return decoded path component, null if UTF-8 is not supported
*/
public static String getDecodedPath(final HttpServletRequest request, String servletName) {
try {
return URIUtil.decode(getRawPath(request, servletName), "UTF-8");
} catch (URIException e) {
throw new AssertionError("JVM does not support UTF-8"); // should never happen!
}
}
/**
* Parse the path component from the given request and return w/o decoding.