KAFKA-16448: Add ProcessingExceptionHandler interface and implementations

streams/src/main/java/org/apache/kafka/streams/errors/ErrorHandlerContext.java

@@ -0,0 +1,133 @@
+/*
+ * 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.streams.errors;
+
+import org.apache.kafka.common.header.Headers;
+import org.apache.kafka.streams.kstream.ValueTransformerWithKeySupplier;
+import org.apache.kafka.streams.processor.Punctuator;
+import org.apache.kafka.streams.processor.TaskId;
+
+/**
+ * This interface allows user code to inspect the context of a record that has failed processing.
+ */
+public interface ErrorHandlerContext {
+    /**
+     * Return the topic name of the current input record; could be {@code null} if it is not
+     * available.
+     *
+     * <p> For example, if this method is invoked within a {@link Punctuator#punctuate(long)
+     * punctuation callback}, or while processing a record that was forwarded by a punctuation
+     * callback, the record won't have an associated topic.
+     * Another example is
+     * {@link org.apache.kafka.streams.kstream.KTable#transformValues(ValueTransformerWithKeySupplier, String...)}
+     * (and siblings), that do not always guarantee to provide a valid topic name, as they might be
+     * executed "out-of-band" due to some internal optimizations applied by the Kafka Streams DSL.
+     *
+     * @return the topic name
+     */
+    String topic();
+
+    /**
+     * Return the partition ID of the current input record; could be {@code -1} if it is not
+     * available.
+     *
+     * <p> For example, if this method is invoked within a {@link Punctuator#punctuate(long)
+     * punctuation callback}, or while processing a record that was forwarded by a punctuation
+     * callback, the record won't have an associated partition ID.
+     * Another example is
+     * {@link org.apache.kafka.streams.kstream.KTable#transformValues(ValueTransformerWithKeySupplier, String...)}
+     * (and siblings), that do not always guarantee to provide a valid partition ID, as they might be
+     * executed "out-of-band" due to some internal optimizations applied by the Kafka Streams DSL.
+     *
+     * @return the partition ID
+     */
+    int partition();
+
+    /**
+     * Return the offset of the current input record; could be {@code -1} if it is not
+     * available.
+     *
+     * <p> For example, if this method is invoked within a {@link Punctuator#punctuate(long)
+     * punctuation callback}, or while processing a record that was forwarded by a punctuation
+     * callback, the record won't have an associated offset.
+     * Another example is
+     * {@link org.apache.kafka.streams.kstream.KTable#transformValues(ValueTransformerWithKeySupplier, String...)}
+     * (and siblings), that do not always guarantee to provide a valid offset, as they might be
+     * executed "out-of-band" due to some internal optimizations applied by the Kafka Streams DSL.
+     *
+     * @return the offset
+     */
+    long offset();
+
+    /**
+     * Return the headers of the current source record; could be an empty header if it is not
+     * available.
+     *
+     * <p> For example, if this method is invoked within a {@link Punctuator#punctuate(long)
+     * punctuation callback}, or while processing a record that was forwarded by a punctuation
+     * callback, the record might not have any associated headers.
+     * Another example is
+     * {@link org.apache.kafka.streams.kstream.KTable#transformValues(ValueTransformerWithKeySupplier, String...)}
+     * (and siblings), that do not always guarantee to provide valid headers, as they might be
+     * executed "out-of-band" due to some internal optimizations applied by the Kafka Streams DSL.
+     *
+     * @return the headers
+     */
+    Headers headers();
+
+    /**
+     * Return the non-deserialized byte[] of the input message key if the context has been triggered by a message.
+     *
+     * <p> If this method is invoked within a {@link Punctuator#punctuate(long)
+     * punctuation callback}, or while processing a record that was forwarded by a punctuation
+     * callback, it will return {@code null}.
+     *
+     * <p> If this method is invoked in a sub-topology due to a repartition, the returned key would be one sent
+     * to the repartition topic.
+     *
+     * @return the raw byte of the key of the source message
+     */
+    byte[] sourceRawKey();
+
+    /**
+     * Return the non-deserialized byte[] of the input message value if the context has been triggered by a message.
+     *
+     * <p> If this method is invoked within a {@link Punctuator#punctuate(long)
+     * punctuation callback}, or while processing a record that was forwarded by a punctuation
+     * callback, it will return {@code null}.
+     *
+     * <p> If this method is invoked in a sub-topology due to a repartition, the returned value would be one sent
+     * to the repartition topic.
+     *
+     * @return the raw byte of the value of the source message
+     */
+    byte[] sourceRawValue();
+
+    /**
+     * Return the current processor node ID.
+     *
+     * @return the processor node ID
+     */
+    String processorNodeId();
+
+    /**
+     * Return the task ID.
+     *
+     * @return the task ID
+     */
+    TaskId taskId();
+}

streams/src/main/java/org/apache/kafka/streams/errors/LogAndContinueProcessingExceptionHandler.java

@@ -0,0 +1,46 @@
+/*
+ * 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.streams.errors;
+
+import org.apache.kafka.streams.processor.api.Record;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.Map;
+
+/**
+ * Processing exception handler that logs a processing exception and then
+ * signals the processing pipeline to continue processing more records.
+ */
+public class LogAndContinueProcessingExceptionHandler implements ProcessingExceptionHandler {
+    private static final Logger log = LoggerFactory.getLogger(LogAndContinueProcessingExceptionHandler.class);
+
+    @Override
+    public ProcessingHandlerResponse handle(final ErrorHandlerContext context, final Record<?, ?> record, final Exception exception) {
+        log.warn("Exception caught during message processing, " +
+                "processor node: {}, taskId: {}, source topic: {}, source partition: {}, source offset: {}",
+            context.processorNodeId(), context.taskId(), context.topic(), context.partition(), context.offset(),
+            exception);
+
+        return ProcessingHandlerResponse.CONTINUE;
+    }
+
+    @Override
+    public void configure(final Map<String, ?> configs) {
+        // ignore
+    }
+}

streams/src/main/java/org/apache/kafka/streams/errors/LogAndFailProcessingExceptionHandler.java

@@ -0,0 +1,46 @@
+/*
+ * 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.streams.errors;
+
+import org.apache.kafka.streams.processor.api.Record;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.Map;
+
+/**
+ * Processing exception handler that logs a processing exception and then
+ * signals the processing pipeline to stop processing more records and fail.
+ */
+public class LogAndFailProcessingExceptionHandler implements ProcessingExceptionHandler {
+    private static final Logger log = LoggerFactory.getLogger(LogAndFailProcessingExceptionHandler.class);
+
+    @Override
+    public ProcessingHandlerResponse handle(final ErrorHandlerContext context, final Record<?, ?> record, final Exception exception) {
+        log.warn("Exception caught during message processing, " +
+                "processor node: {}, taskId: {}, source topic: {}, source partition: {}, source offset: {}",
+            context.processorNodeId(), context.taskId(), context.topic(), context.partition(), context.offset(),
+            exception);
+
+        return ProcessingHandlerResponse.FAIL;
+    }
+
+    @Override
+    public void configure(final Map<String, ?> configs) {
+        // ignore
+    }
+}

streams/src/main/java/org/apache/kafka/streams/errors/ProcessingExceptionHandler.java

@@ -0,0 +1,56 @@
+/*
+ * 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.streams.errors;
+
+import org.apache.kafka.common.Configurable;
+import org.apache.kafka.streams.processor.api.Record;
+
+/**
+ * An interface that allows user code to inspect a record that has failed processing
+ */
+public interface ProcessingExceptionHandler extends Configurable {
+    /**
+     * Inspect a record and the exception received
+     *
+     * @param context processing context metadata
+     * @param record record where the exception occurred
+     * @param exception the actual exception
+     */
+    ProcessingHandlerResponse handle(final ErrorHandlerContext context, final Record<?, ?> record, final Exception exception);
+
+    enum ProcessingHandlerResponse {
+        /* continue with processing */
+        CONTINUE(1, "CONTINUE"),
+        /* fail the processing and stop */
+        FAIL(2, "FAIL");
+
+        /**
+         * the permanent and immutable name of processing exception response
+         */
+        public final String name;
+
+        /**
+         * the permanent and immutable id of processing exception response
+         */
+        public final int id;
+
+        ProcessingHandlerResponse(final int id, final String name) {
+            this.id = id;
+            this.name = name;
+        }
+    }
+}

streams/src/main/java/org/apache/kafka/streams/errors/internals/DefaultErrorHandlerContext.java

@@ -0,0 +1,90 @@
+/*
+ * 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.streams.errors.internals;
+
+import org.apache.kafka.common.header.Headers;
+import org.apache.kafka.streams.errors.ErrorHandlerContext;
+import org.apache.kafka.streams.processor.TaskId;
+
+public class DefaultErrorHandlerContext implements ErrorHandlerContext {
+    private final String topic;
+    private final int partition;
+    private final long offset;
+    private final Headers headers;
+    private final byte[] sourceRawKey;
+    private final byte[] sourceRawValue;
+    private final String processorNodeId;
+    private final TaskId taskId;
+
+    public DefaultErrorHandlerContext(final String topic,
+                                      final int partition,
+                                      final long offset,
+                                      final Headers headers,
+                                      final byte[] sourceRawKey,
+                                      final byte[] sourceRawValue,
+                                      final String processorNodeId,
+                                      final TaskId taskId) {
+        this.topic = topic;
+        this.partition = partition;
+        this.offset = offset;
+        this.headers = headers;
+        this.sourceRawKey = sourceRawKey;
+        this.sourceRawValue = sourceRawValue;
+        this.processorNodeId = processorNodeId;
+        this.taskId = taskId;
+    }
+
+    @Override
+    public String topic() {
+        return this.topic;
+    }
+
+    @Override
+    public int partition() {
+        return this.partition;
+    }
+
+    @Override
+    public long offset() {
+        return this.offset;
+    }
+
+    @Override
+    public Headers headers() {
+        return this.headers;
+    }
+
+    @Override
+    public byte[] sourceRawKey() {
+        return this.sourceRawKey;
+    }
+
+    @Override
+    public byte[] sourceRawValue() {
+        return this.sourceRawValue;
+    }
+
+    @Override
+    public String processorNodeId() {
+        return this.processorNodeId;
+    }
+
+    @Override
+    public TaskId taskId() {
+        return this.taskId;
+    }
+}