/*
* 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.cql3.statements;
import java.nio.ByteBuffer;
import java.util.*;
import org.github.jamm.MemoryMeter;
import org.apache.cassandra.cql3.*;
import org.apache.cassandra.db.ConsistencyLevel;
import org.apache.cassandra.db.IMutation;
import org.apache.cassandra.exceptions.*;
import org.apache.cassandra.service.ClientState;
import org.apache.cassandra.service.QueryState;
import org.apache.cassandra.service.StorageProxy;
import org.apache.cassandra.transport.messages.ResultMessage;
import org.apache.cassandra.utils.Pair;
/**
* A <code>BATCH</code> statement parsed from a CQL query.
*
*/
public class BatchStatement implements CQLStatement, MeasurableForPreparedCache
{
public static enum Type
{
LOGGED, UNLOGGED, COUNTER
}
private final int boundTerms;
public final Type type;
private final List<ModificationStatement> statements;
private final Attributes attrs;
/**
* Creates a new BatchStatement from a list of statements and a
* Thrift consistency level.
*
* @param type type of the batch
* @param statements a list of UpdateStatements
* @param attrs additional attributes for statement (CL, timestamp, timeToLive)
*/
public BatchStatement(int boundTerms, Type type, List<ModificationStatement> statements, Attributes attrs)
{
this.boundTerms = boundTerms;
this.type = type;
this.statements = statements;
this.attrs = attrs;
}
public long measureForPreparedCache(MemoryMeter meter)
{
long size = meter.measure(this) + meter.measure(statements) + meter.measureDeep(attrs);
for (ModificationStatement stmt : statements)
size += stmt.measureForPreparedCache(meter);
return size;
}
public int getBoundTerms()
{
return boundTerms;
}
public void checkAccess(ClientState state) throws InvalidRequestException, UnauthorizedException
{
for (ModificationStatement statement : statements)
statement.checkAccess(state);
}
public void validate(ClientState state) throws InvalidRequestException
{
if (attrs.isTimeToLiveSet())
throw new InvalidRequestException("Global TTL on the BATCH statement is not supported.");
for (ModificationStatement statement : statements)
{
if (attrs.isTimestampSet() && statement.isTimestampSet())
throw new InvalidRequestException("Timestamp must be set either on BATCH or individual statements");
}
}
public List<ModificationStatement> getStatements()
{
return statements;
}
private Collection<? extends IMutation> getMutations(List<ByteBuffer> variables, boolean local, ConsistencyLevel cl, long now)
throws RequestExecutionException, RequestValidationException
{
Map<Pair<String, ByteBuffer>, IMutation> mutations = new HashMap<Pair<String, ByteBuffer>, IMutation>();
for (ModificationStatement statement : statements)
addStatementMutations(statement, variables, local, cl, now, mutations);
return mutations.values();
}
private Collection<? extends IMutation> getMutations(List<List<ByteBuffer>> variables, ConsistencyLevel cl, long now)
throws RequestExecutionException, RequestValidationException
{
Map<Pair<String, ByteBuffer>, IMutation> mutations = new HashMap<Pair<String, ByteBuffer>, IMutation>();
for (int i = 0; i < statements.size(); i++)
{
ModificationStatement statement = statements.get(i);
List<ByteBuffer> statementVariables = variables.get(i);
addStatementMutations(statement, statementVariables, false, cl, now, mutations);
}
return mutations.values();
}
private void addStatementMutations(ModificationStatement statement,
List<ByteBuffer> variables,
boolean local,
ConsistencyLevel cl,
long now,
Map<Pair<String, ByteBuffer>, IMutation> mutations)
throws RequestExecutionException, RequestValidationException
{
// Group mutation together, otherwise they won't get applied atomically
for (IMutation m : statement.getMutations(variables, local, cl, attrs.getTimestamp(now, variables), true))
{
Pair<String, ByteBuffer> key = Pair.create(m.getKeyspaceName(), m.key());
IMutation existing = mutations.get(key);
if (existing == null)
{
mutations.put(key, m);
}
else
{
existing.addAll(m);
}
}
}
public ResultMessage execute(QueryState queryState, QueryOptions options) throws RequestExecutionException, RequestValidationException
{
if (options.getConsistency() == null)
throw new InvalidRequestException("Invalid empty consistency level");
execute(getMutations(options.getValues(), false, options.getConsistency(), queryState.getTimestamp()), options.getConsistency());
return null;
}
public void executeWithPerStatementVariables(ConsistencyLevel cl, QueryState queryState, List<List<ByteBuffer>> variables) throws RequestExecutionException, RequestValidationException
{
if (cl == null)
throw new InvalidRequestException("Invalid empty consistency level");
execute(getMutations(variables, cl, queryState.getTimestamp()), cl);
}
private void execute(Collection<? extends IMutation> mutations, ConsistencyLevel cl) throws RequestExecutionException, RequestValidationException
{
boolean mutateAtomic = (type == Type.LOGGED && mutations.size() > 1);
StorageProxy.mutateWithTriggers(mutations, cl, mutateAtomic);
}
public ResultMessage executeInternal(QueryState queryState) throws RequestValidationException, RequestExecutionException
{
for (IMutation mutation : getMutations(Collections.<ByteBuffer>emptyList(), true, null, queryState.getTimestamp()))
mutation.apply();
return null;
}
public String toString()
{
return String.format("BatchStatement(type=%s, statements=%s)", type, statements);
}
public static class Parsed extends CFStatement
{
private final Type type;
private final Attributes.Raw attrs;
private final List<ModificationStatement.Parsed> parsedStatements;
public Parsed(Type type, Attributes.Raw attrs, List<ModificationStatement.Parsed> parsedStatements)
{
super(null);
this.type = type;
this.attrs = attrs;
this.parsedStatements = parsedStatements;
}
@Override
public void prepareKeyspace(ClientState state) throws InvalidRequestException
{
for (ModificationStatement.Parsed statement : parsedStatements)
statement.prepareKeyspace(state);
}
public ParsedStatement.Prepared prepare() throws InvalidRequestException
{
VariableSpecifications boundNames = getBoundVariables();
List<ModificationStatement> statements = new ArrayList<ModificationStatement>(parsedStatements.size());
for (ModificationStatement.Parsed parsed : parsedStatements)
{
ModificationStatement stmt = parsed.prepare(boundNames);
if (stmt.hasConditions())
throw new InvalidRequestException("Conditional updates are not allowed in batches");
if (stmt.isCounter() && type != Type.COUNTER)
throw new InvalidRequestException("Counter mutations are only allowed in COUNTER batches");
if (!stmt.isCounter() && type == Type.COUNTER)
throw new InvalidRequestException("Only counter mutations are allowed in COUNTER batches");
statements.add(stmt);
}
Attributes prepAttrs = attrs.prepare("[batch]", "[batch]");
prepAttrs.collectMarkerSpecification(boundNames);
return new ParsedStatement.Prepared(new BatchStatement(boundNames.size(), type, statements, prepAttrs), boundNames);
}
}
}