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acosentino pushed a commit to branch main
in repository https://gitbox.apache.org/repos/asf/camel-kamelets.git
The following commit(s) were added to refs/heads/main by this push:
new de6489c Added first implementation of ValueToKey transforms
de6489c is described below
commit de6489ca14a0d13ab7bb7d20337a481ebb2b984e
Author: Andrea Cosentino <[email protected]>
AuthorDate: Wed May 5 10:06:17 2021 +0200
Added first implementation of ValueToKey transforms
---
.../kamelets/utils/transform/kafka/ValueToKey.java | 56 ++++++++++++++++++++++
1 file changed, 56 insertions(+)
diff --git
a/library/camel-kamelets-utils/src/main/java/org/apache/camel/kamelets/utils/transform/kafka/ValueToKey.java
b/library/camel-kamelets-utils/src/main/java/org/apache/camel/kamelets/utils/transform/kafka/ValueToKey.java
new file mode 100644
index 0000000..d8c0aaa
--- /dev/null
+++
b/library/camel-kamelets-utils/src/main/java/org/apache/camel/kamelets/utils/transform/kafka/ValueToKey.java
@@ -0,0 +1,56 @@
+/*
+ * 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.camel.kamelets.utils.transform.kafka;
+
+import org.apache.camel.Exchange;
+import org.apache.camel.ExchangeProperty;
+import org.apache.camel.InvalidPayloadException;
+import org.apache.camel.util.ObjectHelper;
+
+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;
+
+public class ValueToKey {
+
+ public void process(@ExchangeProperty("fields") String fields, Exchange
ex) throws InvalidPayloadException {
+ List<String> splittedFields = new ArrayList<>();
+ Map<Object, Object> body = ex.getMessage().getMandatoryBody(Map.class);
+ if (ObjectHelper.isNotEmpty(fields)) {
+ splittedFields =
Arrays.stream(fields.split(",")).collect(Collectors.toList());
+ }
+
+ Map<Object, Object> key = new HashMap<>();
+ for (Map.Entry entry:
+ body.entrySet()) {
+ final String fieldName = (String) entry.getKey();
+ if (filterNames(fieldName, splittedFields)) {
+ final Object fieldValue = entry.getValue();
+ key.put(entry.getKey(), fieldValue);
+ }
+ }
+
+ ex.getMessage().setHeader("kafka.KEY", key);
+ }
+
+ boolean filterNames(String fieldName, List<String> splittedFields) {
+ return splittedFields.contains(fieldName);
+ }
+}
