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KAFKA-13328, KAFKA-13329 (1): Add preflight validations for key, valu…
…e, and header converter classes (apache#14304) Reviewers: Yash Mayya <yash.mayya@gmail.com>, Greg Harris <greg.harris@aiven.io>
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48 changes: 48 additions & 0 deletions
48
connect/runtime/src/main/java/org/apache/kafka/connect/util/ConcreteSubClassValidator.java
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/* | ||
* 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.kafka.connect.util; | ||
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import org.apache.kafka.common.config.ConfigDef; | ||
import org.apache.kafka.common.utils.Utils; | ||
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public class ConcreteSubClassValidator implements ConfigDef.Validator { | ||
private final Class<?> expectedSuperClass; | ||
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private ConcreteSubClassValidator(Class<?> expectedSuperClass) { | ||
this.expectedSuperClass = expectedSuperClass; | ||
} | ||
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public static ConcreteSubClassValidator forSuperClass(Class<?> expectedSuperClass) { | ||
return new ConcreteSubClassValidator(expectedSuperClass); | ||
} | ||
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@Override | ||
public void ensureValid(String name, Object value) { | ||
if (value == null) { | ||
// The value will be null if the class couldn't be found; no point in performing follow-up validation | ||
return; | ||
} | ||
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Class<?> cls = (Class<?>) value; | ||
Utils.ensureConcreteSubclass(expectedSuperClass, cls); | ||
} | ||
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@Override | ||
public String toString() { | ||
return "A concrete subclass of " + expectedSuperClass.getName(); | ||
} | ||
} |
47 changes: 47 additions & 0 deletions
47
connect/runtime/src/main/java/org/apache/kafka/connect/util/InstantiableClassValidator.java
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/* | ||
* 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.kafka.connect.util; | ||
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import org.apache.kafka.common.config.ConfigDef; | ||
import org.apache.kafka.common.config.ConfigException; | ||
import org.apache.kafka.common.utils.Utils; | ||
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public class InstantiableClassValidator implements ConfigDef.Validator { | ||
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@Override | ||
public void ensureValid(String name, Object value) { | ||
if (value == null) { | ||
// The value will be null if the class couldn't be found; no point in performing follow-up validation | ||
return; | ||
} | ||
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Class<?> cls = (Class<?>) value; | ||
try { | ||
Object o = cls.getDeclaredConstructor().newInstance(); | ||
Utils.maybeCloseQuietly(o, o + " (instantiated for preflight validation"); | ||
} catch (NoSuchMethodException | IllegalAccessException e) { | ||
throw new ConfigException(name, cls.getName(), "Could not find a public no-argument constructor for class" + (e.getMessage() != null ? ": " + e.getMessage() : "")); | ||
} catch (ReflectiveOperationException | LinkageError | RuntimeException e) { | ||
throw new ConfigException(name, cls.getName(), "Could not instantiate class" + (e.getMessage() != null ? ": " + e.getMessage() : "")); | ||
} | ||
} | ||
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@Override | ||
public String toString() { | ||
return "A class with a public, no-argument constructor"; | ||
} | ||
} |
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