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https://issues.apache.org/jira/browse/METRON-503?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15736718#comment-15736718
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ASF GitHub Bot commented on METRON-503:
---------------------------------------
Github user cestella commented on a diff in the pull request:
https://github.com/apache/incubator-metron/pull/316#discussion_r91817285
--- Diff:
metron-interface/metron-rest/src/main/java/org/apache/metron/rest/service/TransformationService.java
---
@@ -0,0 +1,111 @@
+/**
+ * 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.metron.rest.service;
+
+import org.apache.metron.common.dsl.Context;
+import org.apache.metron.common.dsl.ParseException;
+import org.apache.metron.common.dsl.StellarFunctionInfo;
+import
org.apache.metron.common.dsl.functions.resolver.SingletonFunctionResolver;
+import org.apache.metron.common.field.transformation.FieldTransformations;
+import org.apache.metron.common.stellar.StellarProcessor;
+import org.apache.metron.rest.model.StellarFunctionDescription;
+import org.apache.metron.rest.model.TransformationValidation;
+import org.json.simple.JSONObject;
+import org.springframework.stereotype.Service;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.stream.Collectors;
+
+@Service
+public class TransformationService {
+
+ public Map<String, Boolean> validateRules(List<String> rules) {
+ Map<String, Boolean> results = new HashMap<>();
+ StellarProcessor stellarProcessor = new StellarProcessor();
+ for(String rule: rules) {
+ try {
+ boolean result = stellarProcessor.validate(rule,
Context.EMPTY_CONTEXT());
+ results.put(rule, result);
+ } catch (ParseException e) {
+ results.put(rule, false);
+ }
+ }
+ return results;
+ }
+
+ public Map<String, Object>
validateTransformation(TransformationValidation transformationValidation) {
+ JSONObject sampleJson = new
JSONObject(transformationValidation.getSampleData());
+
transformationValidation.getSensorParserConfig().getFieldTransformations().forEach(fieldTransformer
-> {
+ fieldTransformer.transformAndUpdate(sampleJson,
transformationValidation.getSensorParserConfig().getParserConfig(),
Context.EMPTY_CONTEXT());
+ }
+ );
+ return sampleJson;
+ }
+
+ public FieldTransformations[] getTransformations() {
+ return FieldTransformations.values();
+ }
+
+ public List<StellarFunctionDescription> getStellarFunctions() {
+ List<StellarFunctionDescription> stellarFunctionDescriptions = new
ArrayList<>();
+ Iterable<StellarFunctionInfo> stellarFunctionsInfo =
SingletonFunctionResolver.getInstance().getFunctionInfo();
+ stellarFunctionsInfo.forEach(stellarFunctionInfo -> {
+ stellarFunctionDescriptions.add(new StellarFunctionDescription(
+ stellarFunctionInfo.getName(),
+ stellarFunctionInfo.getDescription(),
+ stellarFunctionInfo.getParams(),
+ stellarFunctionInfo.getReturns()));
+ });
+ return stellarFunctionDescriptions;
+ }
+
+ private List<String> simpleFunctionNames = Arrays.asList(
--- End diff --
Can you pull these from the classpath based on the Stellar annotation? I
presume "simple" in this case are stellar functions with one argument (that
might be a relevant comment in the code actually). You should be able to get
the list of stellar functions via reflection and then get the number of params
to filter them out.
> Metron REST API
> ---------------
>
> Key: METRON-503
> URL: https://issues.apache.org/jira/browse/METRON-503
> Project: Metron
> Issue Type: New Feature
> Reporter: Ryan Merriman
> Assignee: Ryan Merriman
> Attachments: Metron REST API.docx
>
>
> As discussed on the dev list ([DISCUSS] Metron REST API Requirements), this
> Jira includes adding a REST API to Metron.
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