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* 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.tracing;
import java.nio.ByteBuffer;
import java.util.Arrays;
import java.util.Date;
import java.util.List;
import java.util.Map;
import java.util.concurrent.TimeUnit;
import com.google.common.collect.ImmutableMap;
import org.apache.cassandra.config.CFMetaData;
import org.apache.cassandra.config.KSMetaData;
import org.apache.cassandra.db.CFRowAdder;
import org.apache.cassandra.db.ColumnFamily;
import org.apache.cassandra.db.Mutation;
import org.apache.cassandra.locator.SimpleStrategy;
import org.apache.cassandra.utils.FBUtilities;
import org.apache.cassandra.utils.UUIDGen;
public final class TraceKeyspace
{
public static final String NAME = "system_traces";
private static final String SESSIONS_TABLE = "sessions";
private static final String EVENTS_TABLE = "events";
private static final int DAY = (int) TimeUnit.DAYS.toSeconds(1);
private static final CFMetaData SessionsTable =
compile(SESSIONS_TABLE, "tracing sessions",
"CREATE TABLE %s ("
+ "session_id uuid,"
+ "coordinator inet,"
+ "duration int,"
+ "parameters map<text, text>,"
+ "request text,"
+ "started_at timestamp,"
+ "PRIMARY KEY ((session_id)))")
.defaultTimeToLive(DAY);
private static final CFMetaData EventsTable =
compile(EVENTS_TABLE, "tracing events",
"CREATE TABLE %s ("
+ "session_id uuid,"
+ "event_id timeuuid,"
+ "activity text,"
+ "source inet,"
+ "source_elapsed int,"
+ "thread text,"
+ "PRIMARY KEY ((session_id), event_id))")
.defaultTimeToLive(DAY);
private static CFMetaData compile(String table, String comment, String cql)
{
return CFMetaData.compile(String.format(cql, table), NAME).comment(comment);
}
public static KSMetaData definition()
{
List<CFMetaData> tables = Arrays.asList(SessionsTable, EventsTable);
return new KSMetaData(NAME, SimpleStrategy.class, ImmutableMap.of("replication_factor", "2"), true, tables);
}
static Mutation toStopSessionMutation(ByteBuffer sessionId, int elapsed)
{
Mutation mutation = new Mutation(NAME, sessionId);
ColumnFamily cells = mutation.addOrGet(SessionsTable);
CFRowAdder adder = new CFRowAdder(cells, cells.metadata().comparator.builder().build(), FBUtilities.timestampMicros());
adder.add("duration", elapsed);
return mutation;
}
static Mutation toStartSessionMutation(ByteBuffer sessionId, Map<String, String> parameters, String request, long startedAt)
{
Mutation mutation = new Mutation(NAME, sessionId);
ColumnFamily cells = mutation.addOrGet(TraceKeyspace.SessionsTable);
CFRowAdder adder = new CFRowAdder(cells, cells.metadata().comparator.builder().build(), FBUtilities.timestampMicros());
adder.add("coordinator", FBUtilities.getBroadcastAddress());
for (Map.Entry<String, String> entry : parameters.entrySet())
adder.addMapEntry("parameters", entry.getKey(), entry.getValue());
adder.add("request", request);
adder.add("started_at", new Date(startedAt));
return mutation;
}
static Mutation toEventMutation(ByteBuffer sessionId, String message, int elapsed, String threadName)
{
Mutation mutation = new Mutation(NAME, sessionId);
ColumnFamily cells = mutation.addOrGet(EventsTable);
CFRowAdder adder = new CFRowAdder(cells, cells.metadata().comparator.make(UUIDGen.getTimeUUID()), FBUtilities.timestampMicros());
adder.add("activity", message);
adder.add("source", FBUtilities.getBroadcastAddress());
if (elapsed >= 0)
adder.add("source_elapsed", elapsed);
adder.add("thread", threadName);
return mutation;
}
}