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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.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import com.google.common.annotations.VisibleForTesting;
import com.codahale.metrics.Counter;
import com.codahale.metrics.Snapshot;
import org.apache.cassandra.auth.CassandraAuthorizer;
import org.apache.cassandra.config.DatabaseDescriptor;
import org.apache.cassandra.cql3.QueryOptions;
import org.apache.cassandra.cql3.QueryProcessor;
import org.apache.cassandra.cql3.UntypedResultSet;
import org.apache.cassandra.cql3.statements.SelectStatement;
import org.apache.cassandra.db.marshal.DoubleType;
import org.apache.cassandra.db.marshal.LongType;
import org.apache.cassandra.db.marshal.UTF8Type;
import org.apache.cassandra.dht.LocalPartitioner;
import org.apache.cassandra.metrics.CIDRAuthorizerMetrics;
import org.apache.cassandra.schema.SchemaConstants;
import org.apache.cassandra.schema.TableMetadata;
import org.apache.cassandra.service.ClientState;
import org.apache.cassandra.transport.messages.ResultMessage;
import org.apache.cassandra.utils.MBeanWrapper;
import static org.apache.cassandra.service.QueryState.forInternalCalls;
import static org.apache.cassandra.utils.Clock.Global.nanoTime;
/**
* Virtual tables capturing metrics related to CIDR filtering
*/
public class CIDRFilteringMetricsTable implements CIDRFilteringMetricsTableMBean
{
public static final String MBEAN_NAME = "org.apache.cassandra.db:type=CIDRFilteringMetricsTable";
private static final CIDRFilteringMetricsTable instance = new CIDRFilteringMetricsTable();
CIDRFilteringMetricsTable()
{
// Register mbean for nodetool to access vtable entries
if (!MBeanWrapper.instance.isRegistered(MBEAN_NAME))
MBeanWrapper.instance.registerMBean(this, MBEAN_NAME);
}
public static Collection getAll(String keyspace)
{
return Arrays.asList(
new CIDRFilteringMetricsCountsTable(keyspace),
new CIDRFilteringMetricsLatenciesTable(keyspace)
);
}
/**
* Virtual table capturing counts i.e, non-latency metrics related to CIDR filtering
*/
public static class CIDRFilteringMetricsCountsTable extends AbstractVirtualTable
{
public static final String TABLE_NAME = "cidr_filtering_metrics_counts";
public static final String NAME_COL = "name";
public static final String VALUE_COL = "value";
public static final String CIDR_ACCESSES_ACCEPTED_COUNT_NAME_PREFIX = "Number of CIDR accesses accepted from CIDR group - ";
public static final String CIDR_ACCESSES_REJECTED_COUNT_NAME_PREFIX = "Number of CIDR accesses rejected from CIDR group - ";
public static final String CIDR_GROUPS_CACHE_RELOAD_COUNT_NAME = "CIDR groups cache reload count";
@VisibleForTesting
CIDRFilteringMetricsCountsTable(String keyspace)
{
super(TableMetadata.builder(keyspace, TABLE_NAME)
.comment("Count metrics specific to CIDR filtering")
.kind(TableMetadata.Kind.VIRTUAL)
.partitioner(new LocalPartitioner(UTF8Type.instance))
.addPartitionKeyColumn(NAME_COL, UTF8Type.instance)
.addRegularColumn(VALUE_COL, LongType.instance)
.build());
}
private void addRow(SimpleDataSet dataSet, String name, long value)
{
dataSet.row(name)
.column(VALUE_COL, value);
}
@Override
public DataSet data()
{
SimpleDataSet result = new SimpleDataSet(metadata());
CIDRAuthorizerMetrics cidrAuthorizerMetrics = DatabaseDescriptor.getCIDRAuthorizer().getCidrAuthorizerMetrics();
for (Map.Entry entry : cidrAuthorizerMetrics.acceptedCidrAccessCount.entrySet())
{
addRow(result, CIDR_ACCESSES_ACCEPTED_COUNT_NAME_PREFIX + entry.getKey(),
entry.getValue().getCount());
}
for (Map.Entry entry : cidrAuthorizerMetrics.rejectedCidrAccessCount.entrySet())
{
addRow(result, CIDR_ACCESSES_REJECTED_COUNT_NAME_PREFIX + entry.getKey(),
entry.getValue().getCount());
}
addRow(result, CIDR_GROUPS_CACHE_RELOAD_COUNT_NAME, cidrAuthorizerMetrics.cacheReloadCount.getCount());
return result;
}
}
/**
* Virtual table capturing latency metrics related to CIDR filtering
*/
public static class CIDRFilteringMetricsLatenciesTable extends AbstractVirtualTable
{
public static final String TABLE_NAME = "cidr_filtering_metrics_latencies";
public static final String NAME_COL = "name";
public static final String P50_COL = "p50th";
public static final String P95_COL = "p95th";
public static final String P99_COL = "p99th";
public static final String P999_COL = "p999th";
public static final String MAX_COL = "max";
public static final String CIDR_CHECKS_LATENCY_NAME = "CIDR checks latency (ns)";
public static final String CIDR_GROUPS_CACHE_RELOAD_LATENCY_NAME = "CIDR groups cache reload latency (ns)";
public static final String LOOKUP_CIDR_GROUPS_FOR_IP_LATENCY_NAME = "Lookup IP in CIDR groups cache latency (ns)";
@VisibleForTesting
CIDRFilteringMetricsLatenciesTable(String keyspace)
{
super(TableMetadata.builder(keyspace, TABLE_NAME)
.comment("Latency metrics specific to CIDR filtering")
.kind(TableMetadata.Kind.VIRTUAL)
.partitioner(new LocalPartitioner(UTF8Type.instance))
.addPartitionKeyColumn(NAME_COL, UTF8Type.instance)
.addRegularColumn(P50_COL, DoubleType.instance)
.addRegularColumn(P95_COL, DoubleType.instance)
.addRegularColumn(P99_COL, DoubleType.instance)
.addRegularColumn(P999_COL, DoubleType.instance)
.addRegularColumn(MAX_COL, DoubleType.instance)
.build());
}
private void addRow(SimpleDataSet dataSet, String name, Snapshot snapshot)
{
dataSet.row(name)
.column(P50_COL, snapshot.getMedian())
.column(P95_COL, snapshot.get95thPercentile())
.column(P99_COL, snapshot.get99thPercentile())
.column(P999_COL, snapshot.get999thPercentile())
.column(MAX_COL, (double) snapshot.getMax());
}
@Override
public DataSet data()
{
SimpleDataSet result = new SimpleDataSet(metadata());
CIDRAuthorizerMetrics cidrAuthorizerMetrics =
DatabaseDescriptor.getCIDRAuthorizer().getCidrAuthorizerMetrics();
addRow(result, CIDR_CHECKS_LATENCY_NAME, cidrAuthorizerMetrics.cidrChecksLatency.getSnapshot());
addRow(result, CIDR_GROUPS_CACHE_RELOAD_LATENCY_NAME,
cidrAuthorizerMetrics.cacheReloadLatency.getSnapshot());
addRow(result, LOOKUP_CIDR_GROUPS_FOR_IP_LATENCY_NAME,
cidrAuthorizerMetrics.lookupCidrGroupsForIpLatency.getSnapshot());
return result;
}
}
private UntypedResultSet retrieveRows(SelectStatement statement)
{
QueryOptions options = QueryOptions.forInternalCalls(CassandraAuthorizer.authReadConsistencyLevel(),
Collections.emptyList());
ResultMessage.Rows rows = statement.execute(forInternalCalls(), options, nanoTime());
return UntypedResultSet.create(rows.result);
}
public Map getCountsMetricsFromVtable()
{
String countsMetricsTableName = SchemaConstants.VIRTUAL_VIEWS + '.' +
CIDRFilteringMetricsTable.CIDRFilteringMetricsCountsTable.TABLE_NAME;
SelectStatement getCountsMetricsStatement =
(SelectStatement) QueryProcessor.getStatement(String.format("SELECT * FROM %s", countsMetricsTableName),
ClientState.forInternalCalls());
Map metrics = new HashMap<>();
UntypedResultSet result = retrieveRows(getCountsMetricsStatement);
for (UntypedResultSet.Row row : result)
{
if (!row.has(CIDRFilteringMetricsTable.CIDRFilteringMetricsCountsTable.NAME_COL) ||
!row.has(CIDRFilteringMetricsTable.CIDRFilteringMetricsCountsTable.VALUE_COL))
throw new RuntimeException("Invalid row " + row + " in table: " + countsMetricsTableName);
metrics.put(row.getString(CIDRFilteringMetricsTable.CIDRFilteringMetricsCountsTable.NAME_COL),
row.getLong(CIDRFilteringMetricsTable.CIDRFilteringMetricsCountsTable.VALUE_COL));
}
return metrics;
}
public Map> getLatenciesMetricsFromVtable()
{
String latenciesMetricsTableName = SchemaConstants.VIRTUAL_VIEWS + '.' +
CIDRFilteringMetricsTable.CIDRFilteringMetricsLatenciesTable.TABLE_NAME;
SelectStatement getLatenciesMetricsStatement =
(SelectStatement) QueryProcessor.getStatement(String.format("SELECT * FROM %s", latenciesMetricsTableName),
ClientState.forInternalCalls());
Map> metrics = new HashMap<>();
UntypedResultSet result = retrieveRows(getLatenciesMetricsStatement);
for (UntypedResultSet.Row row : result)
{
if (!row.has(CIDRFilteringMetricsLatenciesTable.NAME_COL) ||
!row.has(CIDRFilteringMetricsLatenciesTable.P50_COL))
throw new RuntimeException("Invalid row " + row + " in table: " + latenciesMetricsTableName);
metrics.put(row.getString(CIDRFilteringMetricsTable.CIDRFilteringMetricsLatenciesTable.NAME_COL),
Arrays.asList(row.getDouble(CIDRFilteringMetricsLatenciesTable.P50_COL),
row.getDouble(CIDRFilteringMetricsLatenciesTable.P95_COL),
row.getDouble(CIDRFilteringMetricsLatenciesTable.P99_COL),
row.getDouble(CIDRFilteringMetricsLatenciesTable.P999_COL),
row.getDouble(CIDRFilteringMetricsLatenciesTable.MAX_COL)));
}
return metrics;
}
}