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https://issues.apache.org/jira/browse/BEAM-9468?focusedWorklogId=403103&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-403103
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ASF GitHub Bot logged work on BEAM-9468:
----------------------------------------
Author: ASF GitHub Bot
Created on: 13/Mar/20 19:21
Start Date: 13/Mar/20 19:21
Worklog Time Spent: 10m
Work Description: jaketf commented on pull request #11107: [BEAM-9468]
[WIP] add HL7v2IO and FhirIO
URL: https://github.com/apache/beam/pull/11107#discussion_r392424941
##########
File path:
sdks/java/io/google-cloud-platform/src/main/java/org/apache/beam/sdk/io/gcp/healthcare/FetchHL7v2Message.java
##########
@@ -0,0 +1,95 @@
+/*
+ * 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.sdk.io.gcp.healthcare;
+
+import com.google.api.services.healthcare.v1alpha2.model.Message;
+import org.apache.beam.sdk.transforms.PTransform;
+import org.apache.beam.sdk.transforms.ParDo;
+import org.apache.beam.sdk.values.PCollection;
+import org.apache.beam.sdk.values.PCollectionTuple;
+import org.apache.beam.sdk.values.TupleTag;
+import org.apache.beam.sdk.values.TupleTagList;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * DoFn to fetch a message from an Google Cloud Healthcare HL7v2 store based
on msgID
+ *
+ * <p>This DoFn consumes a {@link PCollection<String>} of notifications from
the HL7v2 store, and
+ * fetches the actual {@link Message} object based on the id in the
notification and will output a
+ * {@link PCollectionTuple} which contains the output and dead-letter {@link
PCollection}.
+ *
+ * <p>The {@link PCollectionTuple} output will contain the following {@link
PCollection}:
+ *
+ * <ul>
+ * <li>{@link FetchHL7v2Message#OUT} - Contains all {@link FailsafeElement}
records successfully
+ * read from the HL7v2 store.
+ * <li>{@link FetchHL7v2Message#DEAD_LETTER} - Contains all {@link
FailsafeElement} records which
+ * failed to be fetched from the HL7v2 store, with error message and
stacktrace.
+ * </ul>
+ *
+ * <p>Example:
+ *
+ * <pre>{@code
+ * PipelineOptions options = ...;
+ * Pipeline pipeline = Pipeline.create(options)
+ *
+ * PCollection<String> msgIDs = pipeline.apply(
+ * "ReadHL7v2Notifications",
+ * PubsubIO.readStrings().fromSubscription(options.getInputSubscription()));
+ *
+ * PCollectionTuple fetchResults = msgIDs.apply(
+ * "FetchHL7v2Messages",
+ * new FetchHL7v2Message;
+ *
+ * // Write errors to your favorite dead letter queue (e.g. Pub/Sub, GCS,
BigQuery)
+ * fetchResults.get(PubsubNotificationToHL7v2Message.DEAD_LETTER)
+ * .apply("WriteToDeadLetterQueue", ...);
+ *
+ * PCollection<Message> fetchedMessages =
fetchResults.get(PubsubNotificationToHL7v2Message.OUT)
+ * .apply("ExtractFetchedMessage",
+ * MapElements
+ * .into(TypeDescriptor.of(Message.class))
+ * .via(FailsafeElement::getPayload));
+ *
+ * // Go about your happy path transformations.
+ * fetchedMessages.apply("ProcessFetchedMessages", ...)
+ *
+ * }***
+ * </pre>
+ */
+public class FetchHL7v2Message extends PTransform<PCollection<String>,
PCollectionTuple> {
Review comment:
Totally Agreed. This is why I elected to use adaptive throttling in the
HL7MessageGetFn.
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Issue Time Tracking
-------------------
Worklog Id: (was: 403103)
Time Spent: 50m (was: 40m)
> Add Google Cloud Healthcare API IO Connectors
> ---------------------------------------------
>
> Key: BEAM-9468
> URL: https://issues.apache.org/jira/browse/BEAM-9468
> Project: Beam
> Issue Type: New Feature
> Components: io-java-gcp
> Reporter: Jacob Ferriero
> Priority: Minor
> Time Spent: 50m
> Remaining Estimate: 0h
>
> Add IO Transforms for the HL7v2, FHIR and DICOM stores in the [Google Cloud
> Healthcare API|https://cloud.google.com/healthcare/docs/]
> HL7v2IO
> FHIRIO
> DICOM
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