| /* |
| * 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.phoenix.flume.serializer; |
| |
| import static org.apache.phoenix.flume.FlumeConstants.CONFIG_REGULAR_EXPRESSION; |
| import static org.apache.phoenix.flume.FlumeConstants.IGNORE_CASE_CONFIG; |
| import static org.apache.phoenix.flume.FlumeConstants.IGNORE_CASE_DEFAULT; |
| import static org.apache.phoenix.flume.FlumeConstants.REGEX_DEFAULT; |
| |
| import java.sql.PreparedStatement; |
| import java.sql.SQLException; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| |
| import org.apache.flume.Context; |
| import org.apache.flume.Event; |
| import org.apache.phoenix.schema.types.PDataType; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| |
| public class RegexEventSerializer extends BaseEventSerializer { |
| |
| private static final Logger logger = LoggerFactory.getLogger(RegexEventSerializer.class); |
| |
| private Pattern inputPattern; |
| |
| /** |
| * |
| */ |
| @Override |
| public void doConfigure(Context context) { |
| final String regex = context.getString(CONFIG_REGULAR_EXPRESSION, REGEX_DEFAULT); |
| final boolean regexIgnoreCase = context.getBoolean(IGNORE_CASE_CONFIG,IGNORE_CASE_DEFAULT); |
| inputPattern = Pattern.compile(regex, Pattern.DOTALL + (regexIgnoreCase ? Pattern.CASE_INSENSITIVE : 0)); |
| } |
| |
| |
| /** |
| * |
| */ |
| @Override |
| public void doInitialize() throws SQLException { |
| // NO-OP |
| } |
| |
| |
| @Override |
| public void upsertEvents(List<Event> events) throws SQLException { |
| if (events == null){ |
| throw new NullPointerException(); |
| } |
| if (connection == null){ |
| throw new NullPointerException(); |
| } |
| if (this.upsertStatement == null){ |
| throw new NullPointerException(); |
| } |
| |
| boolean wasAutoCommit = connection.getAutoCommit(); |
| connection.setAutoCommit(false); |
| try (PreparedStatement colUpsert = connection.prepareStatement(upsertStatement)) { |
| String value = null; |
| Integer sqlType = null; |
| for(Event event : events) { |
| byte [] payloadBytes = event.getBody(); |
| if(payloadBytes == null || payloadBytes.length == 0) { |
| continue; |
| } |
| String payload = new String(payloadBytes); |
| Matcher m = inputPattern.matcher(payload.trim()); |
| |
| if (!m.matches()) { |
| logger.debug("payload {} doesn't match the pattern {} ", payload, inputPattern.toString()); |
| continue; |
| } |
| if (m.groupCount() != colNames.size()) { |
| logger.debug("payload {} size doesn't match the pattern {} ", m.groupCount(), colNames.size()); |
| continue; |
| } |
| int index = 1 ; |
| int offset = 0; |
| for (int i = 0 ; i < colNames.size() ; i++,offset++) { |
| if (columnMetadata[offset] == null ) { |
| continue; |
| } |
| |
| value = m.group(i + 1); |
| sqlType = columnMetadata[offset].getSqlType(); |
| Object upsertValue = PDataType.fromTypeId(sqlType).toObject(value); |
| if (upsertValue != null) { |
| colUpsert.setObject(index++, upsertValue, sqlType); |
| } else { |
| colUpsert.setNull(index++, sqlType); |
| } |
| } |
| |
| //add headers if necessary |
| Map<String,String> headerValues = event.getHeaders(); |
| for(int i = 0 ; i < headers.size() ; i++ , offset++) { |
| |
| String headerName = headers.get(i); |
| String headerValue = headerValues.get(headerName); |
| sqlType = columnMetadata[offset].getSqlType(); |
| Object upsertValue = PDataType.fromTypeId(sqlType).toObject(headerValue); |
| if (upsertValue != null) { |
| colUpsert.setObject(index++, upsertValue, sqlType); |
| } else { |
| colUpsert.setNull(index++, sqlType); |
| } |
| } |
| |
| if(autoGenerateKey) { |
| sqlType = columnMetadata[offset].getSqlType(); |
| String generatedRowValue = this.keyGenerator.generate(); |
| Object rowkeyValue = PDataType.fromTypeId(sqlType).toObject(generatedRowValue); |
| colUpsert.setObject(index++, rowkeyValue ,sqlType); |
| } |
| colUpsert.execute(); |
| } |
| connection.commit(); |
| } catch(Exception ex){ |
| logger.error("An error {} occurred during persisting the event ",ex.getMessage()); |
| throw new SQLException(ex.getMessage()); |
| } finally { |
| if(wasAutoCommit) { |
| connection.setAutoCommit(true); |
| } |
| } |
| |
| } |
| |
| } |