summaryrefslogtreecommitdiffstats
path: root/sca-java-2.x/trunk/modules/common-http/src
diff options
context:
space:
mode:
Diffstat (limited to 'sca-java-2.x/trunk/modules/common-http/src')
-rw-r--r--sca-java-2.x/trunk/modules/common-http/src/main/java/org/apache/tuscany/sca/common/http/HTTPUtil.java19
1 files changed, 19 insertions, 0 deletions
diff --git a/sca-java-2.x/trunk/modules/common-http/src/main/java/org/apache/tuscany/sca/common/http/HTTPUtil.java b/sca-java-2.x/trunk/modules/common-http/src/main/java/org/apache/tuscany/sca/common/http/HTTPUtil.java
index 3dc9f5891d..f810970869 100644
--- a/sca-java-2.x/trunk/modules/common-http/src/main/java/org/apache/tuscany/sca/common/http/HTTPUtil.java
+++ b/sca-java-2.x/trunk/modules/common-http/src/main/java/org/apache/tuscany/sca/common/http/HTTPUtil.java
@@ -19,6 +19,9 @@
package org.apache.tuscany.sca.common.http;
+import java.math.BigInteger;
+import java.security.MessageDigest;
+
import javax.servlet.http.HttpServletRequest;
/**
@@ -71,4 +74,20 @@ public class HTTPUtil {
return contextRoot;
}
+
+ public static String calculateHashETag(byte[] content) {
+ String eTag = "invalid";
+ try {
+ MessageDigest messageDigest = MessageDigest.getInstance("MD5");
+ byte[] digest = messageDigest.digest(content);
+ BigInteger number = new BigInteger(1, digest);
+ StringBuffer sb = new StringBuffer('0');
+ sb.append(number.toString(16));
+ eTag = sb.toString();
+ } catch(Exception e) {
+ //ignore, we will return random etag
+ eTag = Integer.toString((new java.util.Random()).nextInt(Integer.MAX_VALUE));
+ }
+ return eTag;
+ }
}