[GitHub] [nifi] r65535 commented on a diff in pull request #6337: NIFI-7392: Add ValidateJson processor to standard bundle

[GitBox <gi...@apache.org>]

r65535 commented on code in PR #6337:
URL: https://github.com/apache/nifi/pull/6337#discussion_r981134430


##########
nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/java/org/apache/nifi/processors/standard/ValidateJson.java:
##########
@@ -0,0 +1,203 @@
+/*
+ * 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.standard;
+
+import org.apache.nifi.components.AllowableValue;
+import org.apache.nifi.components.PropertyDescriptor;
+import org.apache.nifi.expression.ExpressionLanguageScope;
+import org.apache.nifi.flowfile.FlowFile;
+import org.apache.nifi.annotation.behavior.EventDriven;
+import org.apache.nifi.annotation.behavior.InputRequirement;
+import org.apache.nifi.annotation.behavior.SideEffectFree;
+import org.apache.nifi.annotation.behavior.SupportsBatching;
+import org.apache.nifi.annotation.behavior.WritesAttribute;
+import org.apache.nifi.annotation.behavior.WritesAttributes;
+import org.apache.nifi.annotation.behavior.InputRequirement.Requirement;
+import org.apache.nifi.annotation.documentation.CapabilityDescription;
+import org.apache.nifi.annotation.documentation.Tags;
+import org.apache.nifi.annotation.lifecycle.OnScheduled;
+import org.apache.nifi.processor.exception.ProcessException;
+import org.apache.nifi.processor.AbstractProcessor;
+import org.apache.nifi.processor.ProcessContext;
+import org.apache.nifi.processor.ProcessSession;
+import org.apache.nifi.processor.ProcessorInitializationContext;
+import org.apache.nifi.processor.Relationship;
+import org.apache.nifi.processor.util.StandardValidators;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.networknt.schema.JsonSchema;
+import com.networknt.schema.JsonSchemaFactory;
+import com.networknt.schema.ValidationMessage;
+import com.networknt.schema.SpecVersion.VersionFlag;
+
+@EventDriven
+@SideEffectFree
+@SupportsBatching
+@InputRequirement(Requirement.INPUT_REQUIRED)
+@Tags({"JSON", "schema", "validation"})
+@WritesAttributes({
+    @WritesAttribute(attribute = "validatejson.invalid.error", description = "If the flow file is routed to the invalid relationship "
+            + "the attribute will contain the error message resulting from the validation failure.")
+})
+@CapabilityDescription("Validates the contents of FlowFiles against a user-specified JSON Schema file")
+public class ValidateJson extends AbstractProcessor {
+
+    public static final String ERROR_ATTRIBUTE_KEY = "validatejson.invalid.error";
+
+    public static final AllowableValue SCHEMA_VERSION_4 = new AllowableValue("V4");
+    public static final AllowableValue SCHEMA_VERSION_6 = new AllowableValue("V6");
+    public static final AllowableValue SCHEMA_VERSION_7 = new AllowableValue("V7");
+    public static final AllowableValue SCHEMA_VERSION_V201909 = new AllowableValue("V201909");
+
+    public static final PropertyDescriptor SCHEMA_VERSION = new PropertyDescriptor
+        .Builder().name("SCHEMA_VERSION")
+        .displayName("Schema Version")
+        .description("The JSON schema specification")
+        .required(true)
+        .allowableValues(SCHEMA_VERSION_4, SCHEMA_VERSION_6, SCHEMA_VERSION_7, SCHEMA_VERSION_V201909)
+        .defaultValue(SCHEMA_VERSION_V201909.getValue())
+        .build();
+
+    public static final PropertyDescriptor SCHEMA_TEXT = new PropertyDescriptor
+        .Builder().name("SCHEMA_TEXT")
+        .displayName("Schema Text")
+        .description("The text of a JSON schema")
+        .required(true)
+        .expressionLanguageSupported(ExpressionLanguageScope.VARIABLE_REGISTRY)
+        .addValidator(StandardValidators.NON_EMPTY_VALIDATOR)

Review Comment:
   Didn't know this existed! I've added this in



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