after generating a heap dump, zip it

javamelody-core/src/main/java/net/bull/javamelody/internal/model/Action.java

@@ -18,6 +18,8 @@
 package net.bull.javamelody.internal.model;
 
 import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
 import java.io.IOException;
 import java.lang.management.ManagementFactory;
 import java.lang.reflect.Method;
@@ -26,6 +28,8 @@
 import java.util.Date;
 import java.util.List;
 import java.util.Locale;
+import java.util.zip.ZipEntry;
+import java.util.zip.ZipOutputStream;
 
 import javax.management.JMException;
 import javax.management.MBeanServer;
@@ -212,9 +216,12 @@ public String execute(Collector collector, CollectorServer collectorServer, // N
 				// heap dump à générer dans le répertoire temporaire sur le serveur
 				// avec un suffixe contenant le host, la date et l'heure et avec une extension hprof
 				// (utiliser jvisualvm du jdk ou MAT d'eclipse en standalone ou en plugin)
-				final String heapDumpPath = heapDump().getPath();
+				final File heapDump = heapDump();
+				final File zipFile = zip(heapDump);
+				heapDump.delete();
+				final String path = zipFile.getPath();
 				messageForReport = I18N.getFormattedString("heap_dump_genere",
-						heapDumpPath.replace('\\', '/'));
+						path.replace('\\', '/'));
 			}
 			break;
 		case INVALIDATE_SESSIONS:
@@ -387,6 +394,26 @@ private File heapDump() throws IOException {
 		}
 	}
 
+	private static File zip(File source) throws IOException {
+		final File target = new File(source.getParentFile(), source.getName() + ".zip");
+		final FileOutputStream fos = new FileOutputStream(target);
+		final ZipOutputStream zos = new ZipOutputStream(fos);
+		try {
+			final ZipEntry ze = new ZipEntry(source.getName());
+			zos.putNextEntry(ze);
+			final FileInputStream in = new FileInputStream(source);
+			try {
+				TransportFormat.pump(in, zos);
+			} finally {
+				in.close();
+			}
+			zos.closeEntry();
+		} finally {
+			zos.close();
+		}
+		return target;
+	}
+
 	private void ibmHeapDump() {
 		try {
 			final Class<?> dumpClass = getClass().getClassLoader().loadClass("com.ibm.jvm.Dump"); // NOPMD