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https://issues.apache.org/jira/browse/NIFI-5449?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16560368#comment-16560368
]
ASF GitHub Bot commented on NIFI-5449:
--------------------------------------
Github user mattyb149 commented on a diff in the pull request:
https://github.com/apache/nifi/pull/2920#discussion_r205906544
--- Diff:
nifi-commons/nifi-record-path/src/main/java/org/apache/nifi/record/path/functions/Base64Encode.java
---
@@ -0,0 +1,58 @@
+/*
+ * 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.record.path.functions;
+
+import org.apache.nifi.record.path.FieldValue;
+import org.apache.nifi.record.path.RecordPathEvaluationContext;
+import org.apache.nifi.record.path.StandardFieldValue;
+import org.apache.nifi.record.path.paths.RecordPathSegment;
+
+import java.io.UnsupportedEncodingException;
+import java.util.Base64;
+import java.util.stream.Stream;
+
+public class Base64Encode extends RecordPathSegment {
+ private final RecordPathSegment recordPath;
+
+ public Base64Encode(final RecordPathSegment recordPath, final boolean
absolute) {
+ super("base64Encode", null, absolute);
+ this.recordPath = recordPath;
+ }
+
+ @Override
+ public Stream<FieldValue> evaluate(final RecordPathEvaluationContext
context) {
+ final Stream<FieldValue> fieldValues =
recordPath.evaluate(context);
+ return fieldValues.filter(fv -> fv.getValue() != null)
+ .map(fv -> {
+
+ Object value = fv.getValue();
+ if (value instanceof String) {
+ try {
+ return new
StandardFieldValue(Base64.getEncoder().encodeToString(value.toString().getBytes("UTF-8")),
fv.getField(), fv.getParent().orElse(null));
+ } catch (final UnsupportedEncodingException e) {
+ return null; // won't happen.
+ }
+ } else if (value instanceof byte[]) {
--- End diff --
@markap14 Are there other representations of byte arrays I have to deal
with here? Byte[], ByteBuffer, etc.? I thought by the time it's a FieldValue it
would be a byte[] but I might be mistaken...
> RecordPath Language should allow base64 encode and decode
> ---------------------------------------------------------
>
> Key: NIFI-5449
> URL: https://issues.apache.org/jira/browse/NIFI-5449
> Project: Apache NiFi
> Issue Type: Improvement
> Reporter: Dalibor Frívaldský
> Assignee: Matt Burgess
> Priority: Minor
>
> Currently there is no way to encode/decode a record field using base64
> encoder/decoder. Without this functionality it is, for example, impossible to
> store data into databases that require base64 representation of varbinary
> values (e.g. Apache Phoenix).
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