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| author | James Moger <james.moger@gitblit.com> | 2011-10-21 17:00:07 -0400 |
|---|---|---|
| committer | James Moger <james.moger@gitblit.com> | 2011-10-21 17:00:07 -0400 |
| commit | 4d44cf806ddfa8d051f2d6b1289fa3b67b0daf2e (patch) | |
| tree | e232621e9612f4be27a3a1ffc14f5737e78f189e /src/com/gitblit/models/ObjectCache.java | |
| parent | 3d293a9d1194bd98beb624f1bb0b047cb4467a93 (diff) | |
| download | gitblit-4d44cf806ddfa8d051f2d6b1289fa3b67b0daf2e.tar.gz gitblit-4d44cf806ddfa8d051f2d6b1289fa3b67b0daf2e.zip | |
Cache repository sizes and default metrics for performance boost
Diffstat (limited to 'src/com/gitblit/models/ObjectCache.java')
| -rw-r--r-- | src/com/gitblit/models/ObjectCache.java | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/src/com/gitblit/models/ObjectCache.java b/src/com/gitblit/models/ObjectCache.java new file mode 100644 index 00000000..48ede90e --- /dev/null +++ b/src/com/gitblit/models/ObjectCache.java @@ -0,0 +1,85 @@ +/*
+ * Copyright 2011 gitblit.com.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.gitblit.models;
+
+import java.io.Serializable;
+import java.util.Date;
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+
+/**
+ * Reusable object cache.
+ *
+ * @author James Moger
+ *
+ */
+public class ObjectCache<X> implements Serializable {
+
+ private static final long serialVersionUID = 1L;
+
+ private final Map<String, CachedObject<X>> cache = new ConcurrentHashMap<String, CachedObject<X>>();
+
+ private class CachedObject<Y> {
+
+ public final String name;
+
+ private volatile Date date;
+
+ private volatile Y object;
+
+ CachedObject(String name) {
+ this.name = name;
+ date = new Date(0);
+ }
+
+ @Override
+ public String toString() {
+ return getClass().getSimpleName() + ": " + name;
+ }
+ }
+
+ public boolean hasCurrent(String name, Date date) {
+ return cache.containsKey(name) && cache.get(name).date.compareTo(date) == 0;
+ }
+
+ public Date getDate(String name) {
+ return cache.get(name).date;
+ }
+
+ public X getObject(String name) {
+ return cache.get(name).object;
+ }
+
+ public void updateObject(String name, X object) {
+ this.updateObject(name, new Date(), object);
+ }
+
+ public void updateObject(String name, Date date, X object) {
+ CachedObject<X> obj;
+ if (cache.containsKey(name)) {
+ obj = cache.get(name);
+ } else {
+ obj = new CachedObject<X>(name);
+ cache.put(name, obj);
+ }
+ obj.date = date;
+ obj.object = object;
+ }
+
+ public Object remove(String name) {
+ return cache.remove(name).object;
+ }
+}
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