[
https://issues.apache.org/jira/browse/BEAM-12164?focusedWorklogId=771640&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-771640
]
ASF GitHub Bot logged work on BEAM-12164:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 17/May/22 23:40
Start Date: 17/May/22 23:40
Worklog Time Spent: 10m
Work Description: nancyxu123 commented on code in PR #17222:
URL: https://github.com/apache/beam/pull/17222#discussion_r875354516
##########
sdks/java/io/google-cloud-platform/src/main/java/org/apache/beam/sdk/io/gcp/spanner/changestreams/restriction/PartitionRestrictionProgressChecker.java:
##########
@@ -0,0 +1,100 @@
+/*
+ * 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.spanner.changestreams.restriction;
+
+import static java.math.MathContext.DECIMAL128;
+import static
org.apache.beam.sdk.io.gcp.spanner.changestreams.restriction.PartitionMode.DONE;
+import static
org.apache.beam.sdk.io.gcp.spanner.changestreams.restriction.PartitionMode.QUERY_CHANGE_STREAM;
+import static
org.apache.beam.sdk.io.gcp.spanner.changestreams.restriction.PartitionMode.STOP;
+import static
org.apache.beam.sdk.io.gcp.spanner.changestreams.restriction.PartitionMode.UPDATE_STATE;
+import static
org.apache.beam.sdk.io.gcp.spanner.changestreams.restriction.PartitionMode.WAIT_FOR_CHILD_PARTITIONS;
+
+import com.google.cloud.Timestamp;
+import java.math.BigDecimal;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Optional;
+import
org.apache.beam.sdk.transforms.splittabledofn.RestrictionTracker.Progress;
+import org.checkerframework.checker.nullness.qual.Nullable;
+
+public class PartitionRestrictionProgressChecker {
+
+ private static final BigDecimal TOTAL_MODE_TRANSITIONS =
BigDecimal.valueOf(3L);
+
+ /**
+ * Indicates how many mode transitions have been completed for the current
mode. The transitions
+ * are as follows: * (1) QUERY_CHANGE_STREAM, (2) WAIT_FOR_CHILD_PARTITIONS,
(3) FINISH_PARTITION,
+ * (4) WAIT_FOR_PARENT_PARTITIONS, (5) DELETE_PARTITION, (6) DONE.
+ *
+ * <p>This is used to calculate the units of work left, meaning that 1
transition = 1 unit of
+ * work.
+ */
+ private final Map<PartitionMode, BigDecimal> modeToTransitionsCompleted;
+
+ public PartitionRestrictionProgressChecker() {
+ modeToTransitionsCompleted = new HashMap<>();
+ modeToTransitionsCompleted.put(UPDATE_STATE, BigDecimal.valueOf(0L));
+ modeToTransitionsCompleted.put(QUERY_CHANGE_STREAM,
BigDecimal.valueOf(1L));
+ modeToTransitionsCompleted.put(WAIT_FOR_CHILD_PARTITIONS,
BigDecimal.valueOf(2L));
+ modeToTransitionsCompleted.put(DONE, BigDecimal.valueOf(3L));
+ }
+
+ public Progress getProgress(
Review Comment:
Ah makes sense. Removed transitions from total work.
Issue Time Tracking
-------------------
Worklog Id: (was: 771640)
Time Spent: 73h 40m (was: 73.5h)
> SpannerIO Change Stream Connector
> ---------------------------------
>
> Key: BEAM-12164
> URL: https://issues.apache.org/jira/browse/BEAM-12164
> Project: Beam
> Issue Type: New Feature
> Components: sdk-java-core
> Reporter: Thiago Nunes
> Assignee: Thiago Nunes
> Priority: P2
> Fix For: 2.37.0
>
> Time Spent: 73h 40m
> Remaining Estimate: 0h
>
> We would like to augment the existing Google Cloud SpannerIO connector
> ([https://github.com/apache/beam/blob/master/sdks/java/io/google-cloud-platform/src/main/java/org/apache/beam/sdk/io/gcp/spanner/SpannerIO.java)]
> with the support for Spanner Change Streams (CDC). CDC support is just being
> implemented in Spanner and it will be exposed through a gRPC API. We will use
> such API to create a new SpannerIO.readChangeStream(...) implementation.
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