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https://issues.apache.org/jira/browse/BEAM-6161?focusedWorklogId=177094&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-177094
]
ASF GitHub Bot logged work on BEAM-6161:
----------------------------------------
Author: ASF GitHub Bot
Created on: 19/Dec/18 17:34
Start Date: 19/Dec/18 17:34
Worklog Time Spent: 10m
Work Description: Ardagan commented on a change in pull request #7272:
[BEAM-6161] Introduce PCollectionConsumerRegistry and add ElementCoun…
URL: https://github.com/apache/beam/pull/7272#discussion_r243004445
##########
File path:
sdks/java/harness/src/main/java/org/apache/beam/fn/harness/data/PCollectionConsumerRegistry.java
##########
@@ -0,0 +1,64 @@
+/*
+ * 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.beam.fn.harness.data;
+
+import com.google.common.collect.ArrayListMultimap;
+import com.google.common.collect.Iterables;
+import com.google.common.collect.ListMultimap;
+import java.util.List;
+import java.util.Set;
+import org.apache.beam.sdk.fn.data.FnDataReceiver;
+import org.apache.beam.sdk.util.WindowedValue;
+
+/**
+ * The {@code PCollectionConsumerRegistry} is used to maintain a collection of
consuming
+ * FnDataReceiver for each pCollectionId. Registering with this class allows
inserting an element
+ * count counter for every pCollection.
+ */
+public class PCollectionConsumerRegistry {
+
+ private ListMultimap<String, FnDataReceiver<WindowedValue<?>>>
pCollectionIdsToConsumers;
+
+ public PCollectionConsumerRegistry() {
+ pCollectionIdsToConsumers = ArrayListMultimap.create();
+ }
+
+ public <T> FnDataReceiver<WindowedValue<T>> registerAndWrap(
+ String pCollectionId, FnDataReceiver<WindowedValue<T>> consumer) {
+ // TODO(ajamato): Test multiple consumers of the same pcollection before
merging to master.
+ FnDataReceiver<WindowedValue<T>> wrappedReceiver =
+ new ElementCountFnDataReceiver<T>(consumer, pCollectionId);
+ pCollectionIdsToConsumers.put(pCollectionId, (FnDataReceiver)
wrappedReceiver);
+ return wrappedReceiver;
+ }
+
+ /** @return the list of pcollection ids. */
+ public Set<String> keySet() {
+ return pCollectionIdsToConsumers.keySet();
+ }
+
+ /** @return The Get the only FnDataReceiver for the pcollection. */
Review comment:
document IllegalArgumentException when multiple elements are returned for
pCollectionId
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Issue Time Tracking
-------------------
Worklog Id: (was: 177094)
Time Spent: 1h 20m (was: 1h 10m)
> Add ElementCount MonitoringInfos for the Java SDK
> -------------------------------------------------
>
> Key: BEAM-6161
> URL: https://issues.apache.org/jira/browse/BEAM-6161
> Project: Beam
> Issue Type: New Feature
> Components: java-fn-execution, sdk-java-harness
> Reporter: Alex Amato
> Assignee: Alex Amato
> Priority: Major
> Time Spent: 1h 20m
> Remaining Estimate: 0h
>
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