Capture Changes from MySQL

docker run -it --rm --name mysql -p 3306:3306 \
    -e MYSQL_ROOT_PASSWORD=debezium -e MYSQL_USER=mysqluser \
    -e MYSQL_PASSWORD=mysqlpw debezium/example-mysql:1.2

...
2020-03-09T09:48:24.579480Z 0 [Note] mysqld: ready for connections.
Version: '5.7.29-log'  socket: '/var/run/mysqld/mysqld.sock'  port: 3306  MySQL Community Server (GPL)

docker run -it --rm --name mysqlterm --link mysql --rm mysql:5.7 sh \
    -c 'exec mysql -h"$MYSQL_PORT_3306_TCP_ADDR" -P"$MYSQL_PORT_3306_TCP_PORT" -uroot -p"$MYSQL_ENV_MYSQL_ROOT_PASSWORD"'

mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 4
Server version: 5.7.29-log MySQL Community Server (GPL)

Copyright (c) 2000, 2020, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql>

mysql> use inventory;

mysql> show tables;

+---------------------+
| Tables_in_inventory |
+---------------------+
| addresses           |
| customers           |
| geom                |
| orders              |
| products            |
| products_on_hand    |
+---------------------+
6 rows in set (0.01 sec)

mysql> SELECT * FROM customers;

package org.example;

import com.hazelcast.core.Hazelcast;
import com.hazelcast.core.HazelcastInstance;
import com.hazelcast.jet.cdc.CdcSinks;
import com.hazelcast.jet.cdc.ChangeRecord;
import com.hazelcast.jet.cdc.mysql.MySqlCdcSources;
import com.hazelcast.jet.config.JobConfig;
import com.hazelcast.jet.pipeline.Pipeline;
import com.hazelcast.jet.pipeline.StreamSource;

public class JetJob {

    public static void main(String[] args) {
        StreamSource<ChangeRecord> source = MySqlCdcSources.mysql("source")
                .setDatabaseAddress("127.0.0.1")
                .setDatabasePort(3306)
                .setDatabaseUser("debezium")
                .setDatabasePassword("dbz")
                .setClusterName("dbserver1")
                .setDatabaseWhitelist("inventory")
                .setTableWhitelist("inventory.customers")
                .build();

        Pipeline pipeline = Pipeline.create();
        pipeline.readFrom(source)
                .withoutTimestamps()
                .peek()
                .writeTo(CdcSinks.map("customers",
                        r -> r.key().toMap().get("id"),
                        r -> r.value().toObject(Customer.class).toString()));

        JobConfig cfg = new JobConfig().setName("mysql-monitor");
        HazelcastInstance hz = Hazelcast.bootstrappedInstance();
        hz.getJet().newJob(pipeline, cfg);
    }

}

package org.example;

import com.fasterxml.jackson.annotation.JsonProperty;

import java.io.Serializable;
import java.util.Objects;

public class Customer implements Serializable {

    @JsonProperty("id")
    public int id;

    @JsonProperty("first_name")
    public String firstName;

    @JsonProperty("last_name")
    public String lastName;

    @JsonProperty("email")
    public String email;

    public Customer() {
    }

    public Customer(int id, String firstName, String lastName, String email) {
        super();
        this.id = id;
        this.firstName = firstName;
        this.lastName = lastName;
        this.email = email;
    }

    @Override
    public int hashCode() {
        return Objects.hash(email, firstName, id, lastName);
    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj) {
            return true;
        }
        if (obj == null || getClass() != obj.getClass()) {
            return false;
        }
        Customer other = (Customer) obj;
        return id == other.id
                && Objects.equals(firstName, other.firstName)
                && Objects.equals(lastName, other.lastName)
                && Objects.equals(email, other.email);
    }

    @Override
    public String toString() {
        return "Customer {id=" + id + ", firstName=" + firstName + ", lastName=" + lastName + ", email=" + email + '}';
    }
}

package org.example;

import com.hazelcast.client.HazelcastClient;
import com.hazelcast.core.HazelcastInstance;

public class CacheRead {

    public static void main(String[] args) {
        HazelcastInstance instance = HazelcastClient.newHazelcastClient();

        System.out.println("Currently there are following customers in the cache:");
        instance.getMap("customers").values().forEach(c -> System.out.println("\t" + c));

        instance.shutdown();
    }

}

... Completed snapshot in 00:00:01.519
... Output to ordinal 0: key:{{"id":1001}}, value:{{"id":1001,"first_name":"Sally","last_name":"Thomas",...
... Output to ordinal 0: key:{{"id":1002}}, value:{{"id":1002,"first_name":"George","last_name":"Bailey",...
... Output to ordinal 0: key:{{"id":1003}}, value:{{"id":1003,"first_name":"Edward","last_name":"Walker",...
... Output to ordinal 0: key:{{"id":1004}}, value:{{"id":1004,"first_name":"Anne","last_name":"Kretchmar",...
... Transitioning from the snapshot reader to the binlog reader

Currently there are following customers in the cache:
    Customer {id=1002, firstName=George, lastName=Bailey, email=gbailey@foobar.com}
    Customer {id=1003, firstName=Edward, lastName=Walker, email=ed@walker.com}
    Customer {id=1004, firstName=Anne, lastName=Kretchmar, email=annek@noanswer.org}
    Customer {id=1001, firstName=Sally, lastName=Thomas, email=sally.thomas@acme.com}

mysql> UPDATE customers SET first_name='Anne Marie' WHERE id=1004;
Query OK, 1 row affected (0.00 sec)
Rows matched: 1  Changed: 1  Warnings: 0

... Output to ordinal 0: key:{{"id":1004}}, value:{{"id":1004,"first_name":"Anne Marie","last_name":"Kretchmar",...

Currently there are following customers in the cache:
    Customer {id=1002, firstName=George, lastName=Bailey, email=gbailey@foobar.com}
    Customer {id=1003, firstName=Edward, lastName=Walker, email=ed@walker.com}
    Customer {id=1004, firstName=Anne Marie, lastName=Kretchmar, email=annek@noanswer.org}
    Customer {id=1001, firstName=Sally, lastName=Thomas, email=sally.thomas@acme.com}

mysql> UPDATE customers SET email='edward.walker@walker.com' WHERE id=1003;
Query OK, 1 row affected (0.00 sec)
Rows matched: 1  Changed: 1  Warnings: 0

Currently there are following customers in the cache:
    Customer {id=1002, firstName=George, lastName=Bailey, email=gbailey@foobar.com}
    Customer {id=1003, firstName=Edward, lastName=Walker, email=edward.walker@walker.com}
    Customer {id=1004, firstName=Anne Marie, lastName=Kretchmar, email=annek@noanswer.org}
    Customer {id=1001, firstName=Sally, lastName=Thomas, email=sally.thomas@acme.com}