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https://issues.apache.org/jira/browse/METRON-539?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16083176#comment-16083176
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ASF GitHub Bot commented on METRON-539:
---------------------------------------
Github user mattf-horton commented on a diff in the pull request:
https://github.com/apache/metron/pull/641#discussion_r126834205
--- Diff:
metron-stellar/stellar-common/src/main/java/org/apache/metron/stellar/dsl/functions/HashFunctions.java
---
@@ -0,0 +1,85 @@
+/*
+ * 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.stellar.dsl.functions;
+
+import com.google.common.io.BaseEncoding;
+import org.apache.commons.lang3.SerializationUtils;
+import org.apache.metron.stellar.dsl.BaseStellarFunction;
+import org.apache.metron.stellar.dsl.Stellar;
+
+import java.io.Serializable;
+import java.nio.charset.StandardCharsets;
+import java.security.MessageDigest;
+import java.security.NoSuchAlgorithmException;
+import java.util.List;
+
+public class HashFunctions {
+ @Stellar(
+ name = "HASH",
--- End diff --
Ah, sorry I didn't understand this was only a comment about documentation.
I guess you're right; since most objects are indeed serializable, maybe it's
okay to let them discover the occasional object that isn't (if any).
> Add stellar keywords for hashing
> --------------------------------
>
> Key: METRON-539
> URL: https://issues.apache.org/jira/browse/METRON-539
> Project: Metron
> Issue Type: Improvement
> Reporter: Jon Zeolla
> Priority: Minor
>
> Stellar should have the ability to natively hash values using a prefix of TO
> or HASH, then the algorithm, and an optional length. For instance,
> "TO_SHA3_256" or "HASH_MD5."
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