[
https://issues.apache.org/jira/browse/NIFI-3413?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15948354#comment-15948354
]
ASF GitHub Bot commented on NIFI-3413:
--------------------------------------
Github user ijokarumawak commented on a diff in the pull request:
https://github.com/apache/nifi/pull/1618#discussion_r108830875
--- Diff:
nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/java/org/apache/nifi/processors/standard/CaptureChangeMySQL.java
---
@@ -0,0 +1,928 @@
+/*
+ * 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.nifi.processors.standard;
+
+import com.github.shyiko.mysql.binlog.BinaryLogClient;
+import com.github.shyiko.mysql.binlog.event.Event;
+import com.github.shyiko.mysql.binlog.event.EventHeaderV4;
+import com.github.shyiko.mysql.binlog.event.EventType;
+import com.github.shyiko.mysql.binlog.event.QueryEventData;
+import com.github.shyiko.mysql.binlog.event.RotateEventData;
+import com.github.shyiko.mysql.binlog.event.TableMapEventData;
+import org.apache.nifi.annotation.behavior.DynamicProperties;
+import org.apache.nifi.annotation.behavior.DynamicProperty;
+import org.apache.nifi.annotation.behavior.InputRequirement;
+import org.apache.nifi.annotation.behavior.Stateful;
+import org.apache.nifi.annotation.behavior.TriggerSerially;
+import org.apache.nifi.annotation.behavior.WritesAttribute;
+import org.apache.nifi.annotation.behavior.WritesAttributes;
+import org.apache.nifi.annotation.documentation.CapabilityDescription;
+import org.apache.nifi.annotation.documentation.Tags;
+import org.apache.nifi.annotation.lifecycle.OnScheduled;
+import org.apache.nifi.annotation.lifecycle.OnStopped;
+import org.apache.nifi.components.PropertyDescriptor;
+import org.apache.nifi.components.PropertyValue;
+import org.apache.nifi.components.state.Scope;
+import org.apache.nifi.components.state.StateManager;
+import org.apache.nifi.components.state.StateMap;
+import org.apache.nifi.distributed.cache.client.Deserializer;
+import org.apache.nifi.distributed.cache.client.DistributedMapCacheClient;
+import org.apache.nifi.distributed.cache.client.Serializer;
+import org.apache.nifi.logging.ComponentLog;
+import org.apache.nifi.processor.AbstractSessionFactoryProcessor;
+import org.apache.nifi.processor.ProcessContext;
+import org.apache.nifi.processor.ProcessSession;
+import org.apache.nifi.processor.ProcessSessionFactory;
+import org.apache.nifi.processor.Relationship;
+import org.apache.nifi.processor.exception.ProcessException;
+import org.apache.nifi.processor.util.StandardValidators;
+import org.apache.nifi.processors.standard.db.CDCException;
+import org.apache.nifi.processors.standard.db.event.ColumnDefinition;
+import org.apache.nifi.processors.standard.db.event.RowEventException;
+import org.apache.nifi.processors.standard.db.event.TableInfo;
+import org.apache.nifi.processors.standard.db.event.TableInfoCacheKey;
+import org.apache.nifi.processors.standard.db.event.io.EventWriter;
+import
org.apache.nifi.processors.standard.db.impl.mysql.event.BeginTransactionEventInfo;
+import org.apache.nifi.processors.standard.db.impl.mysql.RawBinlogEvent;
+import
org.apache.nifi.processors.standard.db.impl.mysql.BinlogEventListener;
+import
org.apache.nifi.processors.standard.db.impl.mysql.event.BinlogEventInfo;
+import
org.apache.nifi.processors.standard.db.impl.mysql.event.CommitTransactionEventInfo;
+import
org.apache.nifi.processors.standard.db.impl.mysql.event.DeleteRowsEventInfo;
+import
org.apache.nifi.processors.standard.db.impl.mysql.event.SchemaChangeEventInfo;
+import
org.apache.nifi.processors.standard.db.impl.mysql.event.UpdateRowsEventInfo;
+import
org.apache.nifi.processors.standard.db.impl.mysql.event.InsertRowsEventInfo;
+import
org.apache.nifi.processors.standard.db.impl.mysql.event.io.BeginTransactionEventWriter;
+import
org.apache.nifi.processors.standard.db.impl.mysql.event.io.CommitTransactionEventWriter;
+import
org.apache.nifi.processors.standard.db.impl.mysql.event.io.DeleteRowsWriter;
+import
org.apache.nifi.processors.standard.db.impl.mysql.event.io.InsertRowsWriter;
+import
org.apache.nifi.processors.standard.db.impl.mysql.event.io.SchemaChangeEventWriter;
+import
org.apache.nifi.processors.standard.db.impl.mysql.event.io.UpdateRowsWriter;
+import org.apache.nifi.reporting.InitializationException;
+import org.apache.nifi.util.StringUtils;
+import org.apache.nifi.util.file.classloader.ClassLoaderUtils;
+
+import java.io.IOException;
+import java.net.ConnectException;
+import java.net.InetSocketAddress;
+import java.net.MalformedURLException;
+import java.sql.Connection;
+import java.sql.Driver;
+import java.sql.DriverManager;
+import java.sql.DriverPropertyInfo;
+import java.sql.ResultSet;
+import java.sql.ResultSetMetaData;
+import java.sql.SQLException;
+import java.sql.SQLFeatureNotSupportedException;
+import java.sql.Statement;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Map;
+import java.util.Properties;
+import java.util.Set;
+import java.util.concurrent.LinkedBlockingQueue;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.TimeoutException;
+import java.util.concurrent.atomic.AtomicBoolean;
+import java.util.concurrent.atomic.AtomicLong;
+import java.util.logging.Logger;
+import java.util.regex.Pattern;
+
+/**
+ * A processor to retrieve Change Data Capture (CDC) events and send them
as flow files.
+ */
+@TriggerSerially
+@InputRequirement(InputRequirement.Requirement.INPUT_FORBIDDEN)
+@Tags({"sql", "jdbc", "cdc", "mysql"})
+@CapabilityDescription("Retrieves Change Data Capture (CDC) events from a
MySQL database. CDC Events include INSERT, UPDATE, DELETE operations. Events "
+ + "are output as individual flow files ordered by the time at
which the operation occurred.")
+@Stateful(scopes = Scope.LOCAL, description = "Information such as a
'pointer' to the current CDC event in the database is stored by this processor,
such "
--- End diff --
I think this processor would run on primary node only if NiFi is clustered.
Then CLUSTER scope is more appropriate, isn't it? So that other nodes can take
over the states if the primary node changes.
> Implement a CaptureChangeMySQL processor
> ----------------------------------------
>
> Key: NIFI-3413
> URL: https://issues.apache.org/jira/browse/NIFI-3413
> Project: Apache NiFi
> Issue Type: New Feature
> Components: Extensions
> Reporter: Matt Burgess
> Assignee: Matt Burgess
> Fix For: 1.2.0
>
>
> Database systems such as MySQL, Oracle, and SQL Server allow access to their
> transactional logs and such, in order for external clients to have a "change
> data capture" (CDC) capability. As an initial effort, I propose a
> CaptureChangeMySQL processor to enable this in NiFi. This would incorporate
> any APIs necessary for follow-on Jira cases to implement CDC processors for
> databases such as Oracle, SQL Server, PostgreSQL, etc.
> The processor would include properties needed for database connectivity
> (unless using a DBCPConnectionPool would suffice), as well as any to
> configure third-party clients (mysql-binlog-connector, e.g.). It would also
> need to keep a "sequence ID" such that an EnforceOrder processor (NIFI-3414)
> for example could guarantee the order of CDC events for use cases such as
> replication. It will likely need State Management for that, and may need
> other facilities such as a DistributedMapCache in order to keep information
> (column names and types, e.g.) that enrich the raw CDC events.
> The processor would accept no incoming connections (it is a "get" or source
> processor), would be intended to run on the primary node only as a single
> threaded processor, and would generate a flow file for each operation
> (INSERT, UPDATE, DELETE, e,g,) in one or some number of formats (JSON, e.g.).
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