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// Copyright (C) 2013 The Android Open Source Project
//
// 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.google.gerrit.client.projects;
import com.google.gerrit.client.ui.CommentLinkProcessor;
import com.google.gerrit.reviewdb.client.Project;
import com.google.gwt.core.client.GWT;
import com.google.gwt.user.client.rpc.AsyncCallback;
import java.util.LinkedHashMap;
import java.util.Map;
/** Cache of {@link ConfigInfo} objects by project name. */
public class ConfigInfoCache {
private static final int LIMIT = 25;
private static final ConfigInfoCache instance =
GWT.create(ConfigInfoCache.class);
public static class Entry {
private final ConfigInfo info;
private CommentLinkProcessor commentLinkProcessor;
private Entry(ConfigInfo info) {
this.info = info;
}
public CommentLinkProcessor getCommentLinkProcessor() {
if (commentLinkProcessor == null) {
commentLinkProcessor = new CommentLinkProcessor(info.commentlinks());
}
return commentLinkProcessor;
}
public ThemeInfo getTheme() {
return info.theme();
}
}
public static void get(Project.NameKey name, AsyncCallback<Entry> cb) {
instance.getImpl(name, cb);
}
private final LinkedHashMap<String, Entry> cache;
protected ConfigInfoCache() {
cache = new LinkedHashMap<String, Entry>(LIMIT) {
private static final long serialVersionUID = 1L;
@Override
protected boolean removeEldestEntry(
Map.Entry<String, ConfigInfoCache.Entry> e) {
return size() > LIMIT;
}
};
}
private void getImpl(final Project.NameKey name,
final AsyncCallback<Entry> cb) {
Entry e = cache.get(name.get());
if (e != null) {
cb.onSuccess(e);
return;
}
ProjectApi.config(name).get(new AsyncCallback<ConfigInfo>() {
@Override
public void onSuccess(ConfigInfo result) {
Entry e = new Entry(result);
cache.put(name.get(), e);
cb.onSuccess(e);
}
@Override
public void onFailure(Throwable caught) {
cb.onFailure(caught);
}
});
}
}
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