/* This file is part of VoltDB.
* Copyright (C) 2008-2017 VoltDB Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* Stored procedure for Kafka import
*
* If incoming data is in the mirror table, delete that row.
*
* Else add to import table as a record of rows that didn't get
* into the mirror table, a major error!
*/
package kafkaimporter.db.procedures;
import org.voltdb.SQLStmt;
import org.voltdb.VoltProcedure;
import org.voltdb.VoltTable;
//@ProcInfo(
// partitionInfo = "ALL_VALUES1.rowid:0",
// singlePartition = true
// )
public class InsertImport extends VoltProcedure {
public final String sqlSuffix = "(key, value) VALUES (?, ?)";
public final SQLStmt importInsert = new SQLStmt("UPSERT INTO kafkaImportTable1 " + sqlSuffix);
public final SQLStmt deleteMirrorRow = new SQLStmt("DELETE FROM kafkamirrortable1 WHERE key = ? and value = ?");
public final SQLStmt selectCounts = new SQLStmt("SELECT key FROM importcounts ORDER BY key LIMIT 1");
public final SQLStmt insertCounts = new SQLStmt("INSERT INTO importcounts(KEY, TOTAL_ROWS_DELETED) VALUES (?, ?)");
public final SQLStmt updateCounts = new SQLStmt("UPDATE importcounts SET total_rows_deleted=total_rows_deleted+? where key = ?");
public long run(long key, long value)
{
voltQueueSQL(deleteMirrorRow, EXPECT_SCALAR_LONG, key, value);
long deletedCount = voltExecuteSQL()[0].asScalarLong();
if (deletedCount == 0) {
voltQueueSQL(importInsert, key, value);
voltExecuteSQL(true);
} else {
voltQueueSQL(selectCounts);
VoltTable[] result = voltExecuteSQL();
VoltTable data = result[0];
long nrows = data.getRowCount();
if (nrows > 0) {
long ck = data.fetchRow(0).getLong(0);
voltQueueSQL(updateCounts, deletedCount, ck);
voltExecuteSQL(true);
} else {
voltQueueSQL(insertCounts, key, deletedCount);
voltExecuteSQL(true);
}
}
return 0;
}
}