Author: saces
Date: 2009-04-14 18:17:30 +0000 (Tue, 14 Apr 2009)
New Revision: 26787
Added:
trunk/freenet/src/freenet/support/ContainerSizeEstimator.java
Log:
helper class to estaminate container size
Added: trunk/freenet/src/freenet/support/ContainerSizeEstimator.java
===================================================================
--- trunk/freenet/src/freenet/support/ContainerSizeEstimator.java
(rev 0)
+++ trunk/freenet/src/freenet/support/ContainerSizeEstimator.java
2009-04-14 18:17:30 UTC (rev 26787)
@@ -0,0 +1,118 @@
+/* This code is part of Freenet. It is distributed under the GNU General
+ * Public License, version 2 (or at your option any later version). See
+ * http://www.gnu.org/ for further details of the GPL. */
+package freenet.support;
+
+import java.util.HashMap;
+import java.util.Set;
+
+import freenet.client.ArchiveManager.ARCHIVE_TYPE;
+import freenet.client.async.ManifestElement;
+
+/**
+ * Helper class to estaminate the container size,
+ * @author saces
+ *
+ */
+public final class ContainerSizeEstimator {
+
+ public static final ARCHIVE_TYPE DEFAULT_ARCHIVE_TYPE =
ARCHIVE_TYPE.TAR;
+
+ public final static class ContainerSize {
+
+ private long _sizeFiles;
+ private long _sizeFilesNoLimit;
+ private long _sizeSubTrees;
+ private long _sizeSubTreesNoLimit;
+
+ private ContainerSize() {
+ _sizeFiles = 0;
+ _sizeFilesNoLimit = 0;
+ _sizeSubTrees = 0;
+ _sizeSubTreesNoLimit = 0;
+ }
+
+ public long getSizeTotal() {
+ return _sizeFiles+_sizeSubTrees;
+ }
+
+ public long getSizeTotalNoLimit() {
+ return _sizeFilesNoLimit+_sizeSubTreesNoLimit;
+ }
+
+ public long getSizeFiles() {
+ return _sizeFiles;
+ }
+
+ public long getSizeFilesNoLimit() {
+ return _sizeFilesNoLimit;
+ }
+
+ public long getSizeSubTrees() {
+ return _sizeSubTrees;
+ }
+
+ public long getSizeSubTreesNoLimit() {
+ return _sizeSubTreesNoLimit;
+ }
+ }
+
+
+ private ContainerSizeEstimator() {}
+
+ public static ContainerSize getSubTreeSize(HashMap<String, Object>
metadata, long maxItemSize, long maxContainerSize, int maxDeep) {
+ ContainerSize result = new ContainerSize();
+ getSubTreeSize(metadata, result, maxItemSize, maxContainerSize,
maxDeep);
+ return result;
+ }
+
+ private static void getSubTreeSize(HashMap<String, Object> metadata,
ContainerSize result, long maxItemSize, long maxContainerSize,int maxDeep) {
+ Set<String> set = metadata.keySet();
+ // files
+ for(String name:set) {
+ Object o = metadata.get(name);
+ if (o instanceof ManifestElement) {
+ ManifestElement me = (ManifestElement)o;
+ long itemsize = me.getSize();
+ if (itemsize > -1) {
+ result._sizeFilesNoLimit +=
getContainerItemSize(me.getSize());
+ if (itemsize > maxItemSize)
+ result._sizeFiles += 512; //
spare for redirect
+ else
+ result._sizeFiles +=
getContainerItemSize(me.getSize());
+ if (result._sizeFiles >
maxContainerSize) break;
+ }
+ }
+ }
+ // sub dirs
+ if (maxDeep > 0) {
+ for(String name:set) {
+ Object o = metadata.get(name);
+ if (o instanceof HashMap) {
+ result._sizeSubTrees += 512;
+ @SuppressWarnings("unchecked")
+ HashMap<String, Object> hm =
(HashMap<String, Object>) o;
+ ContainerSize tempResult = new
ContainerSize();
+ getSubTreeSize(hm, tempResult,
maxItemSize, (maxContainerSize-result._sizeSubTrees), maxDeep-1);
+ result._sizeSubTrees +=
tempResult.getSizeTotal();
+ result._sizeSubTreesNoLimit +=
tempResult.getSizeTotalNoLimit();
+ if (result._sizeSubTrees >
maxContainerSize) break;
+ }
+ }
+ }
+ }
+
+ public static long getContainerItemSize(long size) {
+ return getContainerItemSize(DEFAULT_ARCHIVE_TYPE, size);
+ }
+
+ private static long getContainerItemSize(ARCHIVE_TYPE archiveType, long
size) {
+ if (archiveType == ARCHIVE_TYPE.TAR)
+ return tarItemSize(size);
+ throw new UnsupportedOperationException("TODO, only TAR
supportet atm.");
+ }
+
+ public static final long tarItemSize(long size) {
+ return 512 + (((size + 511) / 512) * 512);
+ }
+}
Property changes on:
trunk/freenet/src/freenet/support/ContainerSizeEstimator.java
___________________________________________________________________
Added: svn:mime-type
+ text/plain
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