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Posted to issues@nifi.apache.org by pvillard31 <gi...@git.apache.org> on 2018/12/04 21:29:27 UTC
[GitHub] nifi pull request #3198: NIFI-5867 - add thread() EL function to get thread ...
GitHub user pvillard31 opened a pull request:
https://github.com/apache/nifi/pull/3198
NIFI-5867 - add thread() EL function to get thread name
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### For all changes:
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You can merge this pull request into a Git repository by running:
$ git pull https://github.com/pvillard31/nifi thread-id
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/nifi/pull/3198.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #3198
----
commit aa48caacac303b6d418796e3025f9756fc7f0458
Author: Pierre Villard <pi...@...>
Date: 2018-12-04T21:28:33Z
NIFI-5867 - add thread() EL function to get thread name
----
---
[GitHub] nifi pull request #3198: NIFI-5867 - add thread() EL function to get thread ...
Posted by markap14 <gi...@git.apache.org>.
Github user markap14 commented on a diff in the pull request:
https://github.com/apache/nifi/pull/3198#discussion_r238848651
--- Diff: nifi-commons/nifi-expression-language/src/main/java/org/apache/nifi/attribute/expression/language/evaluation/functions/ThreadEvaluator.java ---
@@ -0,0 +1,45 @@
+/*
+ * 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.attribute.expression.language.evaluation.functions;
+
+import java.util.Map;
+
+import org.apache.nifi.attribute.expression.language.evaluation.Evaluator;
+import org.apache.nifi.attribute.expression.language.evaluation.QueryResult;
+import org.apache.nifi.attribute.expression.language.evaluation.StringEvaluator;
+import org.apache.nifi.attribute.expression.language.evaluation.StringQueryResult;
+
+public class ThreadEvaluator extends StringEvaluator {
+
+ private final StringQueryResult thread;
+
+ public ThreadEvaluator() {
+ // See org.apache.nifi.engine.FlowEngine
+ thread = new StringQueryResult(Thread.currentThread().getName());
--- End diff --
I think this needs to happen in the #evaluate method. As-is, a call to ${thread()} will result in returning the name of whatever thread created this Evaluator, and this may not be the same thread in which it's invoked.
---
[GitHub] nifi pull request #3198: NIFI-5867 - add thread() EL function to get thread ...
Posted by pvillard31 <gi...@git.apache.org>.
Github user pvillard31 commented on a diff in the pull request:
https://github.com/apache/nifi/pull/3198#discussion_r239017060
--- Diff: nifi-commons/nifi-expression-language/src/main/java/org/apache/nifi/attribute/expression/language/evaluation/functions/ThreadEvaluator.java ---
@@ -0,0 +1,45 @@
+/*
+ * 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.attribute.expression.language.evaluation.functions;
+
+import java.util.Map;
+
+import org.apache.nifi.attribute.expression.language.evaluation.Evaluator;
+import org.apache.nifi.attribute.expression.language.evaluation.QueryResult;
+import org.apache.nifi.attribute.expression.language.evaluation.StringEvaluator;
+import org.apache.nifi.attribute.expression.language.evaluation.StringQueryResult;
+
+public class ThreadEvaluator extends StringEvaluator {
+
+ private final StringQueryResult thread;
+
+ public ThreadEvaluator() {
+ // See org.apache.nifi.engine.FlowEngine
+ thread = new StringQueryResult(Thread.currentThread().getName());
--- End diff --
yeah... good point, pushed a commit to address that. Thanks!
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