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Type: Bug
Resolution: Done
Priority: Minor
Fix Version/s: 1.0.1.Final, 1.1.0.Beta1
Affects Version/s: 0.1, 0.9.5.Final, 0.10.0.Alpha1, 0.10.0.Alpha2, 0.10.0.Beta1, 0.10.0.Beta2, 0.10.0.Beta3, 0.10.0.Beta4, 0.10.0.CR1, 0.10.0.CR2, 0.10.0.Final, 1.0.0.Beta1, 1.0.0.Beta2, 1.0.0.Beta3, 1.0.0.CR1, 1.0.0.Final
Component/s: mysql-connector
Labels:
None

Git Pull Request:
https://github.com/debezium/debezium/pull/1208
Steps to Reproduce:
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Start Zookeeper

docker run -d --rm --name zookeeper -p 2181:2181 -p 2888:2888 -p 3888:3888 debezium/zookeeper

Start Kafka

docker run -d --rm --name kafka -p 9092:9092 --link zookeeper:zookeeper debezium/kafka

Start Connect

docker run -it --rm --name connect -p 5005:5005 -p 8083:8083 \ -e GROUP_ID=1 \ -e CONFIG_STORAGE_TOPIC=my_connect_configs \ -e OFFSET_STORAGE_TOPIC=my_connect_offsets \ -e STATUS_STORAGE_TOPIC=my_connect_statuses \ --link zookeeper:zookeeper --link kafka:kafka \ debezium/connect

Create connector config with missing port number

cat << 'EOF' > /tmp/connector-config.json { "name": "debezium", "config": { "connector.class": "io.debezium.connector.mysql.MySqlConnector", "database.hostname": "172.17.0.1", "database.user": "debezium", "database.password": "dbz", "database.server.name": "dbz", "database.whitelist": "debezium_test", "table.whitelist": "debezium_test.sample", "database.history.kafka.topic": "history", "database.history.kafka.bootstrap.servers": "kafka:9092", "include.schema.changes": "false", "heartbeat.interval.ms": 1000 } } EOF

Deploy connector with above config

curl -X POST -H "Accept:application/json" -H "Content-Type:application/json" localhost:8083/connectors/ -d @/tmp/connector-config.json
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Start Zookeeper docker run -d --rm --name zookeeper -p 2181:2181 -p 2888:2888 -p 3888:3888 debezium/zookeeper Start Kafka docker run -d --rm --name kafka -p 9092:9092 --link zookeeper:zookeeper debezium/kafka Start Connect docker run -it --rm --name connect -p 5005:5005 -p 8083:8083 \ -e GROUP_ID=1 \ -e CONFIG_STORAGE_TOPIC=my_connect_configs \ -e OFFSET_STORAGE_TOPIC=my_connect_offsets \ -e STATUS_STORAGE_TOPIC=my_connect_statuses \ --link zookeeper:zookeeper --link kafka:kafka \ debezium/connect Create connector config with missing port number cat << 'EOF' > /tmp/connector-config.json { "name": "debezium", "config": { "connector.class": "io.debezium.connector.mysql.MySqlConnector", "database.hostname": "172.17.0.1", "database.user": "debezium", "database.password": "dbz", "database.server.name": "dbz", "database.whitelist": "debezium_test", "table.whitelist": "debezium_test.sample", "database.history.kafka.topic": "history", "database.history.kafka.bootstrap.servers": "kafka:9092", "include.schema.changes": "false", "heartbeat.interval.ms": 1000 } } EOF Deploy connector with above config curl -X POST -H "Accept:application/json" -H "Content-Type:application/json" localhost:8083/connectors/ -d @/tmp/connector-config.json

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Not passing database.port: "3306" results in an exception for MySQL connector. This is not expected since a default value is defined.

{
  "error_code": 400,
  "message": "Connector configuration is invalid and contains the following 2 error(s):
Unable to connect: Cannot load connection class because of underlying exception:
com.mysql.cj.exceptions.WrongArgumentException: Failed to parse the host:port pair '172.17.0.1:${port}'.
A value is required
You can also find the above list of errors at the endpoint `/{connectorType}/config/validate`"
}

And with TRACE logs I see:

2020-01-13 10:52:08,907 TRACE  ||  Config: {useLegacyDatetimeCode=false, hostname=172.17.0.1, user=debezium, password=dbz, server.name=dbz, white
list=debezium_test, useSSL=false}   [io.debezium.jdbc.JdbcConnection]
2020-01-13 10:52:08,908 TRACE  ||  Props: {useLegacyDatetimeCode=false, user=debezium, password=dbz, server.name=dbz, whitelist=debezium_test}
[io.debezium.jdbc.JdbcConnection]
2020-01-13 10:52:08,908 TRACE  ||  URL: jdbc:mysql://172.17.0.1:${port}/?useInformationSchema=true&nullCatalogMeansCurrent=false&useSSL=false&useUnicode=true&characterEncoding=UTF-8&characterSetResults=UTF-8&zeroDateTimeBehavior=CONVERT_TO_NULL   [io.debezium.jdbc.JdbcConnection]
2020-01-13 10:52:08,918 TRACE  ||  Class 'com.mysql.cj.LocalizedErrorMessages' not found. Delegating to parent   [org.apache.kafka.connect.runtime.isolation.PluginClassLoader]
2020-01-13 10:52:08,925 TRACE  ||  Class 'com.mysql.cj.LocalizedErrorMessages_en' not found. Delegating to parent   [org.apache.kafka.connect.runtime.isolation.PluginClassLoader]
2020-01-13 10:52:08,926 TRACE  ||  Class 'com.mysql.cj.LocalizedErrorMessages_en_US' not found. Delegating to parent   [org.apache.kafka.connect.runtime.isolation.PluginClassLoader]
2020-01-13 10:52:08,931 INFO   ||  Failed testing connection for jdbc:mysql://172.17.0.1:${port}/?useInformationSchema=true&nullCatalogMeansCurre
nt=false&useSSL=false&useUnicode=true&characterEncoding=UTF-8&characterSetResults=UTF-8&zeroDateTimeBehavior=CONVERT_TO_NULL with user 'debezium'
   [io.debezium.connector.mysql.MySqlConnector]

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