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The Apache Cassandra Project develops a highly scalable second-generation distributed database, bringing together Dynamo's fully distributed design and Bigtable's ColumnFamily-based data model.
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* 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 "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 org.apache.cassandra.db.virtual;
import java.util.EnumSet;
import java.util.Map;
import java.util.function.Supplier;
import com.google.common.annotations.VisibleForTesting;
import org.apache.cassandra.db.marshal.InetAddressType;
import org.apache.cassandra.db.marshal.Int32Type;
import org.apache.cassandra.db.marshal.UTF8Type;
import org.apache.cassandra.dht.LocalPartitioner;
import org.apache.cassandra.gms.ApplicationState;
import org.apache.cassandra.gms.EndpointState;
import org.apache.cassandra.gms.Gossiper;
import org.apache.cassandra.gms.VersionedValue;
import org.apache.cassandra.locator.InetAddressAndPort;
import org.apache.cassandra.schema.TableMetadata;
import static org.apache.cassandra.gms.ApplicationState.TOKENS;
/**
* A {@link VirtualTable} that return the Gossip information in tabular format.
*/
final class GossipInfoTable extends AbstractVirtualTable
{
static final String TABLE_NAME = "gossip_info";
static final String TABLE_COMMENT = "lists the gossip information for the cluster";
static final String ADDRESS = "address";
static final String PORT = "port";
static final String HOSTNAME = "hostname";
static final String GENERATION = "generation";
static final String HEARTBEAT = "heartbeat";
static final ApplicationState[] STATES_FOR_VERSIONS = ApplicationState.values();
static final ApplicationState[] STATES_FOR_VALUES;
static
{
EnumSet applicationStates = EnumSet.allOf(ApplicationState.class);
// do not add a column for the ApplicationState.TOKENS value
applicationStates.remove(TOKENS);
STATES_FOR_VALUES = applicationStates.toArray(new ApplicationState[0]);
}
private final Supplier