org.apache.jackrabbit.oak.plugins.multiplex.SimpleMountInfoProvider Maven / Gradle / Ivy
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* Licensed to the Apache Software Foundation (ASF) under one
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* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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
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* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.jackrabbit.oak.plugins.multiplex;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.Lists;
import com.google.common.collect.Maps;
import org.apache.jackrabbit.oak.spi.mount.Mount;
import org.apache.jackrabbit.oak.spi.mount.MountInfoProvider;
import org.apache.jackrabbit.oak.spi.mount.Mounts;
import static java.util.Arrays.asList;
/**
* A simple and inefficient implementation to manage mount points
*/
public class SimpleMountInfoProvider implements MountInfoProvider {
private final Map mounts;
private final Mount defMount;
private final boolean hasMounts;
public SimpleMountInfoProvider(List mountInfos) {
this.mounts = getMounts(mountInfos);
this.hasMounts = !this.mounts.isEmpty();
this.defMount = defaultMount(this.mounts);
//TODO add validation of mountpoints
}
@Override
public Mount getMountByPath(String path) {
for (Mount m : mounts.values()){
if (m.isMounted(path)){
return m;
}
}
return defMount;
}
@Override
public Collection getNonDefaultMounts() {
return mounts.values();
}
@Override
public Mount getMountByName(String name) {
return mounts.get(name);
}
@Override
public boolean hasNonDefaultMounts() {
return hasMounts;
}
@Override
public Collection getMountsPlacedUnder(String path) {
Collection mounts = Lists.newArrayList();
for ( Mount mount : this.mounts.values()) {
if ( mount.isUnder(path) ) {
mounts.add(mount);
}
}
return mounts;
}
@Override
public Collection getMountsPlacedDirectlyUnder(String path) {
Collection mounts = Lists.newArrayList();
for ( Mount mount : this.mounts.values()) {
if ( mount.isDirectlyUnder(path) ) {
mounts.add(mount);
}
}
return mounts;
}
@Override
public Mount getDefaultMount() {
return defMount;
}
//~----------------------------------------< builder >
public static Builder newBuilder(){
return new Builder();
}
public static final class Builder {
private final List mounts = Lists.newArrayListWithCapacity(1);
public Builder mount(String name, String... paths) {
mounts.add(new MountInfo(name, false, false, asList(paths)));
return this;
}
public Builder readOnlyMount(String name, String... paths) {
mounts.add(new MountInfo(name, true, false, asList(paths)));
return this;
}
public SimpleMountInfoProvider build() {
return new SimpleMountInfoProvider(mounts);
}
}
//~----------------------------------------< private >
private static Map getMounts(List mountInfos) {
Map mounts = Maps.newHashMap();
for (Mount mi : mountInfos) {
mounts.put(mi.getName(), mi);
}
return ImmutableMap.copyOf(mounts);
}
private static Mount defaultMount(Map mounts) {
return Mounts.defaultMount(mounts.values());
}
}