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/*
* (c) Copyright 2018 Palantir Technologies Inc. All rights reserved.
*
* Licensed 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 com.palantir.atlasdb.keyvalue.cassandra;
import com.palantir.atlasdb.keyvalue.api.TableReference;
import com.palantir.common.base.FunctionCheckedException;
import com.palantir.common.base.Throwables;
import java.util.Collection;
import org.apache.thrift.TException;
class CassandraTableTruncator {
private final TracingQueryRunner queryRunner;
private final CassandraClientPool clientPool;
CassandraTableTruncator(TracingQueryRunner queryRunner, CassandraClientPool clientPool) {
this.queryRunner = queryRunner;
this.clientPool = clientPool;
}
void truncateTables(Collection tablesToTruncate) {
if (!tablesToTruncate.isEmpty()) {
try {
runTruncateInternal(tablesToTruncate);
} catch (TException e) {
throw Throwables.unwrapAndThrowAtlasDbDependencyException(e);
}
}
}
private void runTruncateInternal(Collection tablesToTruncate) throws TException {
clientPool.runWithRetry(client -> runTruncateOnClient(tablesToTruncate, client));
}
Void runTruncateOnClient(Collection tablesToTruncate, CassandraClient client) throws TException {
truncationFunction(tablesToTruncate).apply(client);
return null;
}
private FunctionCheckedException truncationFunction(
Collection tablesToTruncate) {
return new FunctionCheckedException() {
@Override
public Void apply(CassandraClient client) throws TException {
for (TableReference tableRef : tablesToTruncate) {
queryRunner.run(client, tableRef, () -> {
client.truncate(CassandraKeyValueServiceImpl.internalTableName(tableRef));
return true;
});
}
return null;
}
@Override
public String toString() {
return "truncateTables(" + tablesToTruncate + ")";
}
};
}
}