prankstrisse commented on code in PR #11499: URL: https://github.com/apache/nifi/pull/11499#discussion_r4094812812
########## nifi-extension-bundles/nifi-protobuf-bundle/nifi-protobuf-services/src/main/java/org/apache/nifi/services/protobuf/StandardProtobufWriter.java: ########## @@ -0,0 +1,356 @@ +/* + * 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.services.protobuf; + +import com.squareup.wire.schema.Schema; +import org.apache.nifi.annotation.documentation.CapabilityDescription; +import org.apache.nifi.annotation.documentation.Tags; +import org.apache.nifi.annotation.lifecycle.OnEnabled; +import org.apache.nifi.components.AllowableValue; +import org.apache.nifi.components.DescribedValue; +import org.apache.nifi.components.PropertyDescriptor; +import org.apache.nifi.components.PropertyValue; +import org.apache.nifi.context.PropertyContext; +import org.apache.nifi.controller.AbstractControllerService; +import org.apache.nifi.controller.ConfigurationContext; +import org.apache.nifi.controller.ControllerServiceInitializationContext; +import org.apache.nifi.logging.ComponentLog; +import org.apache.nifi.processor.util.StandardValidators; +import org.apache.nifi.reporting.InitializationException; +import org.apache.nifi.schema.access.SchemaNotFoundException; +import org.apache.nifi.schemaregistry.services.MessageIndexWriter; +import org.apache.nifi.schemaregistry.services.MessageName; +import org.apache.nifi.schemaregistry.services.MessageNameResolver; +import org.apache.nifi.schemaregistry.services.SchemaDefinition; +import org.apache.nifi.schemaregistry.services.SchemaReferenceWriter; +import org.apache.nifi.schemaregistry.services.SchemaRegistry; +import org.apache.nifi.schemaregistry.services.StandardMessageNameFactory; +import org.apache.nifi.schemaregistry.services.StandardSchemaDefinition; +import org.apache.nifi.serialization.RecordSetWriter; +import org.apache.nifi.serialization.RecordSetWriterFactory; +import org.apache.nifi.serialization.SchemaRegistryService; +import org.apache.nifi.serialization.SimpleRecordSchema; +import org.apache.nifi.serialization.record.RecordSchema; +import org.apache.nifi.serialization.record.SchemaIdentifier; +import org.apache.nifi.services.protobuf.schema.ProtoSchemaParser; + +import java.io.ByteArrayInputStream; +import java.io.IOException; +import java.io.InputStream; +import java.io.OutputStream; +import java.nio.charset.StandardCharsets; +import java.security.MessageDigest; +import java.security.NoSuchAlgorithmException; +import java.util.ArrayList; +import java.util.HexFormat; +import java.util.List; +import java.util.Map; + +import static org.apache.nifi.expression.ExpressionLanguageScope.FLOWFILE_ATTRIBUTES; +import static org.apache.nifi.schema.access.SchemaAccessUtils.SCHEMA_ACCESS_STRATEGY; +import static org.apache.nifi.schema.access.SchemaAccessUtils.SCHEMA_BRANCH_NAME; +import static org.apache.nifi.schema.access.SchemaAccessUtils.SCHEMA_NAME; +import static org.apache.nifi.schema.access.SchemaAccessUtils.SCHEMA_NAME_PROPERTY; +import static org.apache.nifi.schema.access.SchemaAccessUtils.SCHEMA_REFERENCE_READER; +import static org.apache.nifi.schema.access.SchemaAccessUtils.SCHEMA_REGISTRY; +import static org.apache.nifi.schema.access.SchemaAccessUtils.SCHEMA_TEXT; +import static org.apache.nifi.schema.access.SchemaAccessUtils.SCHEMA_TEXT_PROPERTY; +import static org.apache.nifi.schema.access.SchemaAccessUtils.SCHEMA_VERSION; +import static org.apache.nifi.services.protobuf.StandardProtobufWriter.MessageNameResolverStrategy.MESSAGE_NAME_PROPERTY; + +@Tags({"protobuf", "record", "writer", "serializer", "confluent"}) +@CapabilityDescription(""" + Serializes NiFi Records into Protocol Buffers binary format. \ + Supports inline schema text and schema registry lookup for determining the Proto schema. \ + When a Schema Reference Writer is configured, a Confluent wire-format header is written; when a \ + Message Index Writer is also configured, the Confluent message index array is written after the header. \ + The target Proto message name can be determined statically using the 'Message Name' property, \ + or dynamically using a Message Name Resolver service. + A single record is written per FlowFile, since concatenated Protocol Buffers messages cannot be delimited. \ + The 'google.protobuf.Any' well-known type is not expanded on write; a Record derived from an Any-typed message \ + is serialized as an ordinary nested message rather than being re-wrapped as an Any.""") Review Comment: done, thanks -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
