From 115551c76c3af879b49447dce64d7a6c29049c40 Mon Sep 17 00:00:00 2001
From: James Moger <james.moger@gitblit.com>
Date: Sat, 01 Mar 2014 09:21:19 -0500
Subject: [PATCH] Properly dispose RevWalk in getCommit

---
 src/main/java/com/gitblit/utils/JGitUtils.java |   55 ++++++++++++-------------------------------------------
 1 files changed, 12 insertions(+), 43 deletions(-)

diff --git a/src/main/java/com/gitblit/utils/JGitUtils.java b/src/main/java/com/gitblit/utils/JGitUtils.java
index 5584fb5..7621c0e 100644
--- a/src/main/java/com/gitblit/utils/JGitUtils.java
+++ b/src/main/java/com/gitblit/utils/JGitUtils.java
@@ -15,10 +15,8 @@
  */
 package com.gitblit.utils;
 
-import java.io.ByteArrayOutputStream;
 import java.io.File;
 import java.io.IOException;
-import java.io.InputStream;
 import java.text.DecimalFormat;
 import java.text.MessageFormat;
 import java.util.ArrayList;
@@ -706,6 +704,7 @@
 			return null;
 		}
 		RevCommit commit = null;
+		RevWalk walk = null;
 		try {
 			// resolve object id
 			ObjectId branchObject;
@@ -714,12 +713,18 @@
 			} else {
 				branchObject = repository.resolve(objectId);
 			}
-			RevWalk walk = new RevWalk(repository);
+			if (branchObject == null) {
+				return null;
+			}
+			walk = new RevWalk(repository);
 			RevCommit rev = walk.parseCommit(branchObject);
 			commit = rev;
-			walk.dispose();
 		} catch (Throwable t) {
 			error(t, repository, "{0} failed to get commit {1}", objectId);
+		} finally {
+			if (walk != null) {
+				walk.dispose();
+			}
 		}
 		return commit;
 	}
@@ -755,18 +760,8 @@
 				ObjectId entid = tw.getObjectId(0);
 				FileMode entmode = tw.getFileMode(0);
 				if (entmode != FileMode.GITLINK) {
-					RevObject ro = rw.lookupAny(entid, entmode.getObjectType());
-					rw.parseBody(ro);
-					ByteArrayOutputStream os = new ByteArrayOutputStream();
-					ObjectLoader ldr = repository.open(ro.getId(), Constants.OBJ_BLOB);
-					byte[] tmp = new byte[4096];
-					InputStream in = ldr.openStream();
-					int n;
-					while ((n = in.read(tmp)) > 0) {
-						os.write(tmp, 0, n);
-					}
-					in.close();
-					content = os.toByteArray();
+					ObjectLoader ldr = repository.open(entid, Constants.OBJ_BLOB);
+					content = ldr.getCachedBytes();
 				}
 			}
 		} catch (Throwable t) {
@@ -810,17 +805,8 @@
 		byte[] content = null;
 		try {
 			RevBlob blob = rw.lookupBlob(ObjectId.fromString(objectId));
-			rw.parseBody(blob);
-			ByteArrayOutputStream os = new ByteArrayOutputStream();
 			ObjectLoader ldr = repository.open(blob.getId(), Constants.OBJ_BLOB);
-			byte[] tmp = new byte[4096];
-			InputStream in = ldr.openStream();
-			int n;
-			while ((n = in.read(tmp)) > 0) {
-				os.write(tmp, 0, n);
-			}
-			in.close();
-			content = os.toByteArray();
+			content = ldr.getCachedBytes();
 		} catch (Throwable t) {
 			error(t, repository, "{0} can't find blob {1}", objectId);
 		} finally {
@@ -1470,23 +1456,6 @@
 		String target = null;
 		try {
 			target = repository.getFullBranch();
-			if (!target.startsWith(Constants.R_HEADS)) {
-				// refers to an actual commit, probably a tag
-				// find latest tag that matches the commit, if any
-				List<RefModel> tagModels = getTags(repository, true, -1);
-				if (tagModels.size() > 0) {
-					RefModel tag = null;
-					Date lastDate = new Date(0);
-					for (RefModel tagModel : tagModels) {
-						if (tagModel.getReferencedObjectId().getName().equals(target) &&
-								tagModel.getDate().after(lastDate)) {
-							tag = tagModel;
-							lastDate = tag.getDate();
-						}
-					}
-					target = tag.getName();
-				}
-			}
 		} catch (Throwable t) {
 			error(t, repository, "{0} failed to get symbolic HEAD target");
 		}

--
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