io.druid.server.http.InventoryViewUtils.java Source code

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Here is the source code for io.druid.server.http.InventoryViewUtils.java

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/*
 * Licensed to Metamarkets Group Inc. (Metamarkets) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. Metamarkets 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
 * "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 io.druid.server.http;

import com.google.common.base.Function;
import com.google.common.base.Predicate;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Iterables;
import com.google.common.collect.Lists;
import com.google.common.collect.Sets;

import io.druid.client.DruidDataSource;
import io.druid.client.DruidServer;
import io.druid.client.InventoryView;
import io.druid.java.util.common.ISE;
import io.druid.java.util.common.Pair;
import io.druid.server.security.Access;
import io.druid.server.security.Action;
import io.druid.server.security.AuthorizationInfo;
import io.druid.server.security.Resource;
import io.druid.server.security.ResourceType;

import java.util.Comparator;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import java.util.TreeSet;

public class InventoryViewUtils {

    public static Set<DruidDataSource> getDataSources(InventoryView serverInventoryView) {
        TreeSet<DruidDataSource> dataSources = Sets.newTreeSet(new Comparator<DruidDataSource>() {
            @Override
            public int compare(DruidDataSource druidDataSource, DruidDataSource druidDataSource1) {
                return druidDataSource.getName().compareTo(druidDataSource1.getName());
            }
        });
        dataSources
                .addAll(Lists.newArrayList(Iterables.concat(Iterables.transform(serverInventoryView.getInventory(),
                        new Function<DruidServer, Iterable<DruidDataSource>>() {
                            @Override
                            public Iterable<DruidDataSource> apply(DruidServer input) {
                                return input.getDataSources();
                            }
                        }))));
        return dataSources;
    }

    public static Set<DruidDataSource> getSecuredDataSources(InventoryView inventoryView,
            final AuthorizationInfo authorizationInfo) {
        if (authorizationInfo == null) {
            throw new ISE("Invalid to call a secured method with null AuthorizationInfo!!");
        } else {
            final Map<Pair<Resource, Action>, Access> resourceAccessMap = new HashMap<>();
            return ImmutableSet
                    .copyOf(Iterables.filter(getDataSources(inventoryView), new Predicate<DruidDataSource>() {
                        @Override
                        public boolean apply(DruidDataSource input) {
                            Resource resource = new Resource(input.getName(), ResourceType.DATASOURCE);
                            Action action = Action.READ;
                            Pair<Resource, Action> key = new Pair<>(resource, action);
                            if (resourceAccessMap.containsKey(key)) {
                                return resourceAccessMap.get(key).isAllowed();
                            } else {
                                Access access = authorizationInfo.isAuthorized(key.lhs, key.rhs);
                                resourceAccessMap.put(key, access);
                                return access.isAllowed();
                            }
                        }
                    }));
        }
    }
}