georgecma commented on code in PR #25831:
URL: https://github.com/apache/beam/pull/25831#discussion_r1139080825
##########
sdks/java/io/hbase/src/main/java/org/apache/beam/sdk/io/hbase/HBaseIO.java:
##########
@@ -765,4 +796,195 @@ public void populateDisplayData(DisplayData.Builder
builder) {
private transient BufferedMutator mutator;
}
}
+
+ public static WriteRowMutations writeRowMutations() {
+ return new WriteRowMutations(null /* Configuration */, "");
+ }
+
+ /** Transformation that writes RowMutation objects to a Hbase table. */
+ public static class WriteRowMutations
+ extends PTransform<PCollection<KV<byte[], RowMutations>>,
PCollection<Integer>> {
+
+ /** Writes to the HBase instance indicated by the* given Configuration. */
+ public WriteRowMutations withConfiguration(Configuration configuration) {
+ checkNotNull(configuration, "configuration cannot be null");
+ return new WriteRowMutations(configuration, tableId);
+ }
+
+ /** Writes to the specified table. */
+ public WriteRowMutations withTableId(String tableId) {
+ checkNotNull(tableId, "tableId cannot be null");
+ return new WriteRowMutations(configuration, tableId);
+ }
+
+ private WriteRowMutations(Configuration configuration, String tableId) {
+ this.configuration = configuration;
+ this.tableId = tableId;
+ }
+
+ @Override
+ public PCollection<Integer> expand(PCollection<KV<byte[], RowMutations>>
input) {
+ checkNotNull(configuration, "withConfiguration() is required");
+ checkNotNull(tableId, "withTableId() is required");
+ checkArgument(!tableId.isEmpty(), "withTableId() cannot be empty");
+
+ return input.apply(ParDo.of(new WriteRowMutationsFn(this)));
+ }
+
+ @Override
+ public void populateDisplayData(DisplayData.Builder builder) {
+ super.populateDisplayData(builder);
+ builder.add(DisplayData.item("configuration", configuration.toString()));
+ builder.add(DisplayData.item("tableId", tableId));
+ }
+
+ public Configuration getConfiguration() {
+ return configuration;
+ }
+
+ public String getTableId() {
+ return tableId;
+ }
+
+ @Override
+ public boolean equals(@Nullable Object o) {
+ if (this == o) {
+ return true;
+ }
+ if (o == null || getClass() != o.getClass()) {
+ return false;
+ }
+ WriteRowMutations writeRowMutations = (WriteRowMutations) o;
+ return
configuration.toString().equals(writeRowMutations.configuration.toString())
+ && Objects.equals(tableId, writeRowMutations.tableId);
+ }
+
+ @Override
+ public int hashCode() {
+ return Objects.hash(configuration, tableId);
+ }
+
+ /**
+ * The writeReplace method allows the developer to provide a replacement
object that will be
+ * serialized instead of the original one. We use this to keep the
enclosed class immutable. For
+ * more details on the technique see <a
+ *
href="https://lingpipe-blog.com/2009/08/10/serializing-immutable-singletons-serialization-proxy/";>this
+ * article</a>.
+ */
+ private Object writeReplace() {
+ return new SerializationProxy(this);
+ }
+
+ private static class SerializationProxy implements Serializable {
+ public SerializationProxy() {}
+
+ public SerializationProxy(WriteRowMutations writeRowMutations) {
+ configuration = writeRowMutations.configuration;
+ tableId = writeRowMutations.tableId;
+ }
+
+ private void writeObject(ObjectOutputStream out) throws IOException {
+ SerializableCoder.of(SerializableConfiguration.class)
+ .encode(new SerializableConfiguration(this.configuration), out);
+
+ StringUtf8Coder.of().encode(this.tableId, out);
+ }
+
+ private void readObject(ObjectInputStream in) throws IOException {
+ this.configuration =
SerializableCoder.of(SerializableConfiguration.class).decode(in).get();
+ this.tableId = StringUtf8Coder.of().decode(in);
+ }
+
+ Object readResolve() {
+ return
HBaseIO.writeRowMutations().withConfiguration(configuration).withTableId(tableId);
+ }
+
+ private Configuration configuration;
+ private String tableId;
+ }
+
+ private final Configuration configuration;
+ private final String tableId;
+
+ /** Function to write row mutations to a hbase table. */
+ private class WriteRowMutationsFn extends DoFn<KV<byte[], RowMutations>,
Integer> {
+
+ public WriteRowMutationsFn(
+ WriteRowMutations writeRowMutations) { // , HbaseSharedConnection
hbaseSharedConnection) {
+ checkNotNull(writeRowMutations.tableId, "tableId");
+ checkNotNull(writeRowMutations.configuration, "configuration");
+ }
+
+ @Setup
+ public void setup() throws Exception {
+ connection = HBaseSharedConnection.getOrCreate(configuration);
+ }
+
+ @StartBundle
+ public void startBundle(StartBundleContext c) throws IOException {
+ table = connection.getTable(TableName.valueOf(tableId));
+ recordsWritten = 0;
+ }
+
+ @FinishBundle
+ public void finishBundle() throws Exception {
+ if (table != null) {
+ table.close();
+ table = null;
+ }
+
+ LOG.debug("Wrote {} records", recordsWritten);
+ }
+
+ @Teardown
+ public void tearDown() throws Exception {
+
+ if (table != null) {
+ table.close();
+ table = null;
+ }
+
+ HBaseSharedConnection.close();
+ }
+
+ @ProcessElement
+ public void processElement(ProcessContext c) throws Exception {
+ RowMutations mutations = c.element().getValue();
+
+ try {
+ // Use Table instead of BufferedMutator to preserve mutation-ordering
+ table.mutateRow(mutations);
+ } catch (Exception e) {
+ throw new Exception(
+ (String.join(
+ " ",
+ "Table",
+ tableId,
+ "row",
+ Bytes.toString(mutations.getRow()),
+ "mutation failed.",
+ "\nTable Available/Enabled:",
+ Boolean.toString(
+
connection.getAdmin().isTableAvailable(TableName.valueOf(tableId))),
+ Boolean.toString(
+
connection.getAdmin().isTableEnabled(TableName.valueOf(tableId))),
+ "\nConnection Closed/Aborted/Locks:",
+ Boolean.toString(connection.isClosed()),
+ Boolean.toString(connection.isAborted()))));
+ }
+
+ // Dummy output so that we can get Dataflow stats for throughput.
+ c.output(1);
Review Comment:
Using PDone for now
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