ncover21 commented on code in PR #9825: URL: https://github.com/apache/nifi/pull/9825#discussion_r2021892495
########## nifi-extension-bundles/nifi-box-bundle/nifi-box-processors/src/main/java/org/apache/nifi/processors/box/CreateBoxMetadataTemplate.java: ########## @@ -0,0 +1,361 @@ +/* + * 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.processors.box; + +import com.box.sdk.BoxAPIConnection; +import com.box.sdk.BoxAPIResponseException; +import com.box.sdk.MetadataTemplate; +import org.apache.nifi.annotation.behavior.InputRequirement; +import org.apache.nifi.annotation.behavior.WritesAttribute; +import org.apache.nifi.annotation.behavior.WritesAttributes; +import org.apache.nifi.annotation.documentation.CapabilityDescription; +import org.apache.nifi.annotation.documentation.SeeAlso; +import org.apache.nifi.annotation.documentation.Tags; +import org.apache.nifi.annotation.lifecycle.OnScheduled; +import org.apache.nifi.box.controllerservices.BoxClientService; +import org.apache.nifi.components.PropertyDescriptor; +import org.apache.nifi.expression.ExpressionLanguageScope; +import org.apache.nifi.flowfile.FlowFile; +import org.apache.nifi.processor.AbstractProcessor; +import org.apache.nifi.processor.ProcessContext; +import org.apache.nifi.processor.ProcessSession; +import org.apache.nifi.processor.Relationship; +import org.apache.nifi.processor.exception.ProcessException; +import org.apache.nifi.processor.util.StandardValidators; +import org.apache.nifi.record.path.FieldValue; +import org.apache.nifi.record.path.RecordPath; +import org.apache.nifi.record.path.RecordPathResult; +import org.apache.nifi.record.path.validation.RecordPathValidator; +import org.apache.nifi.serialization.RecordReader; +import org.apache.nifi.serialization.RecordReaderFactory; +import org.apache.nifi.serialization.record.Record; + +import java.io.InputStream; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.HashMap; +import java.util.HashSet; +import java.util.List; +import java.util.Map; +import java.util.Set; + +import static java.lang.String.valueOf; +import static org.apache.nifi.processors.box.BoxFileAttributes.ERROR_CODE; +import static org.apache.nifi.processors.box.BoxFileAttributes.ERROR_CODE_DESC; +import static org.apache.nifi.processors.box.BoxFileAttributes.ERROR_MESSAGE; +import static org.apache.nifi.processors.box.BoxFileAttributes.ERROR_MESSAGE_DESC; + +@InputRequirement(InputRequirement.Requirement.INPUT_REQUIRED) +@Tags({"box", "storage", "metadata", "templates", "create"}) +@CapabilityDescription("Creates a Box metadata template using field specifications from the flowFile content.") +@SeeAlso({ListBoxFileMetadataTemplates.class, UpdateBoxFileMetadataInstance.class}) +@WritesAttributes({ + @WritesAttribute(attribute = "box.template.name", description = "The template name that was created"), + @WritesAttribute(attribute = "box.template.key", description = "The template key that was created"), + @WritesAttribute(attribute = "box.template.scope", description = "The template scope."), + @WritesAttribute(attribute = "box.template.fields.count", description = "Number of fields created for the template"), + @WritesAttribute(attribute = ERROR_CODE, description = ERROR_CODE_DESC), + @WritesAttribute(attribute = ERROR_MESSAGE, description = ERROR_MESSAGE_DESC) +}) +public class CreateBoxMetadataTemplate extends AbstractProcessor { + + public static final String SCOPE_ENTERPRISE = "enterprise"; + + private static final Set<String> VALID_FIELD_TYPES = new HashSet<>(Arrays.asList("string", "float", "date")); + + public static final PropertyDescriptor TEMPLATE_NAME = new PropertyDescriptor.Builder() + .name("Template Name") + .description("The display name of the metadata template to create.") + .required(true) + .expressionLanguageSupported(ExpressionLanguageScope.FLOWFILE_ATTRIBUTES) + .addValidator(StandardValidators.NON_EMPTY_VALIDATOR) + .build(); + + public static final PropertyDescriptor TEMPLATE_KEY = new PropertyDescriptor.Builder() + .name("Template Key") + .description("The key of the metadata template to create (used for API calls).") + .required(true) + .expressionLanguageSupported(ExpressionLanguageScope.FLOWFILE_ATTRIBUTES) + .addValidator(StandardValidators.NON_EMPTY_VALIDATOR) + .build(); + + public static final PropertyDescriptor HIDDEN = new PropertyDescriptor.Builder() + .name("Hidden") + .description("Whether the template should be hidden in the Box UI.") + .required(true) + .allowableValues("true", "false") + .defaultValue("false") + .expressionLanguageSupported(ExpressionLanguageScope.FLOWFILE_ATTRIBUTES) + .build(); + + public static final PropertyDescriptor RECORD_READER = new PropertyDescriptor.Builder() + .name("Record Reader") + .description("The Record Reader to use for parsing the incoming data") + .required(true) + .identifiesControllerService(RecordReaderFactory.class) + .build(); + + public static final PropertyDescriptor KEY_RECORD_PATH = new PropertyDescriptor.Builder() + .name("Template Key Field Record Path") + .description("Specifies the RecordPath to use for getting the field key names.") + .required(true) + .addValidator(new RecordPathValidator()) + .defaultValue("/key") + .expressionLanguageSupported(ExpressionLanguageScope.FLOWFILE_ATTRIBUTES) + .build(); + + public static final PropertyDescriptor TYPE_RECORD_PATH = new PropertyDescriptor.Builder() + .name("Template Type Field Record Path") + .description("Specifies the RecordPath to use for getting the field type (string, float, date).") + .required(true) + .addValidator(new RecordPathValidator()) + .defaultValue("/type") + .expressionLanguageSupported(ExpressionLanguageScope.FLOWFILE_ATTRIBUTES) + .build(); + + public static final PropertyDescriptor DISPLAY_NAME_RECORD_PATH = new PropertyDescriptor.Builder() + .name("Template Display Name Field Record Path") + .description("Specifies the RecordPath to use for getting the field display name. If not specified or if the path doesn't resolve to a value, the key will be used.") + .required(false) + .addValidator(new RecordPathValidator()) + .defaultValue("/displayName") + .expressionLanguageSupported(ExpressionLanguageScope.FLOWFILE_ATTRIBUTES) + .build(); + + public static final Relationship REL_SUCCESS = new Relationship.Builder() + .name("success") + .description("A FlowFile is routed to this relationship after a template has been successfully created.") + .build(); + + public static final Relationship REL_FAILURE = new Relationship.Builder() + .name("failure") + .description("A FlowFile is routed to this relationship if an error occurs during template creation.") + .build(); + + private static final Set<Relationship> RELATIONSHIPS = Set.of( + REL_SUCCESS, + REL_FAILURE + ); + + private static final List<PropertyDescriptor> PROPERTY_DESCRIPTORS = List.of( + BoxClientService.BOX_CLIENT_SERVICE, + TEMPLATE_NAME, + TEMPLATE_KEY, + HIDDEN, + RECORD_READER, + KEY_RECORD_PATH, + TYPE_RECORD_PATH, + DISPLAY_NAME_RECORD_PATH + ); + + private volatile BoxAPIConnection boxAPIConnection; + + @Override + protected List<PropertyDescriptor> getSupportedPropertyDescriptors() { + return PROPERTY_DESCRIPTORS; + } + + @Override + public Set<Relationship> getRelationships() { + return RELATIONSHIPS; + } + + @OnScheduled + public void onScheduled(final ProcessContext context) { + boxAPIConnection = getBoxAPIConnection(context); + } + + protected BoxAPIConnection getBoxAPIConnection(final ProcessContext context) { + final BoxClientService boxClientService = context.getProperty(BoxClientService.BOX_CLIENT_SERVICE) + .asControllerService(BoxClientService.class); + return boxClientService.getBoxApiConnection(); + } + + @Override + public void onTrigger(final ProcessContext context, final ProcessSession session) throws ProcessException { + FlowFile flowFile = session.get(); + if (flowFile == null) { + return; + } + + final String templateName = context.getProperty(TEMPLATE_NAME).evaluateAttributeExpressions(flowFile).getValue(); + final String templateKey = context.getProperty(TEMPLATE_KEY).evaluateAttributeExpressions(flowFile).getValue(); + final boolean hidden = Boolean.parseBoolean(context.getProperty(HIDDEN).evaluateAttributeExpressions(flowFile).getValue()); + final RecordReaderFactory recordReaderFactory = context.getProperty(RECORD_READER).asControllerService(RecordReaderFactory.class); + final String keyRecordPathStr = context.getProperty(KEY_RECORD_PATH).evaluateAttributeExpressions(flowFile).getValue(); + final String typeRecordPathStr = context.getProperty(TYPE_RECORD_PATH).evaluateAttributeExpressions(flowFile).getValue(); + + final String displayNameRecordPathStr; + if (context.getProperty(DISPLAY_NAME_RECORD_PATH).isSet()) { + displayNameRecordPathStr = context.getProperty(DISPLAY_NAME_RECORD_PATH).evaluateAttributeExpressions(flowFile).getValue(); + } else { + displayNameRecordPathStr = null; + } Review Comment: I think that could be a good idea, refactored the processor to assume this schema -- This is an automated message from the Apache Git Service. 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