/
StreamWriter.java
745 lines (673 loc) · 26.1 KB
/
StreamWriter.java
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
/*
* Copyright 2020 Google LLC
*
* Licensed 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
*
* https://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 com.google.cloud.bigquery.storage.v1;
import com.google.api.core.ApiFuture;
import com.google.api.core.SettableApiFuture;
import com.google.api.gax.core.CredentialsProvider;
import com.google.api.gax.rpc.FixedHeaderProvider;
import com.google.api.gax.rpc.TransportChannelProvider;
import com.google.cloud.bigquery.storage.util.Errors;
import com.google.cloud.bigquery.storage.v1.AppendRowsRequest.ProtoData;
import com.google.cloud.bigquery.storage.v1.StreamConnection.DoneCallback;
import com.google.cloud.bigquery.storage.v1.StreamConnection.RequestCallback;
import com.google.common.base.Preconditions;
import com.google.common.util.concurrent.Uninterruptibles;
import com.google.protobuf.Int64Value;
import io.grpc.Status;
import io.grpc.Status.Code;
import io.grpc.StatusRuntimeException;
import java.io.IOException;
import java.util.Deque;
import java.util.LinkedList;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.locks.Condition;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
import java.util.logging.Logger;
import javax.annotation.concurrent.GuardedBy;
/**
* A BigQuery Stream Writer that can be used to write data into BigQuery Table.
*
* <p>TODO: Support batching.
*/
public class StreamWriter implements AutoCloseable {
private static final Logger log = Logger.getLogger(StreamWriter.class.getName());
private Lock lock;
private Condition hasMessageInWaitingQueue;
private Condition inflightReduced;
/*
* The identifier of stream to write to.
*/
private final String streamName;
/*
* The proto schema of rows to write.
*/
private final ProtoSchema writerSchema;
/*
* Max allowed inflight requests in the stream. Method append is blocked at this.
*/
private final long maxInflightRequests;
/*
* Max allowed inflight bytes in the stream. Method append is blocked at this.
*/
private final long maxInflightBytes;
/*
* TraceId for debugging purpose.
*/
private final String traceId;
/*
* Tracks current inflight requests in the stream.
*/
@GuardedBy("lock")
private long inflightRequests = 0;
/*
* Tracks current inflight bytes in the stream.
*/
@GuardedBy("lock")
private long inflightBytes = 0;
/*
* Tracks how often the stream was closed due to a retriable error. Streaming will stop when the
* count hits a threshold. Streaming should only be halted, if it isn't possible to establish a
* connection. Keep track of the number of reconnections in succession. This will be reset if
* a row is successfully called back.
*/
@GuardedBy("lock")
private long conectionRetryCountWithoutCallback = 0;
/*
* If false, streamConnection needs to be reset.
*/
@GuardedBy("lock")
private boolean streamConnectionIsConnected = false;
/*
* Retry threshold, limits how often the connection is retried before processing halts.
*/
private static final long RETRY_THRESHOLD = 3;
/*
* Indicates whether user has called Close() or not.
*/
@GuardedBy("lock")
private boolean userClosed = false;
/*
* The final status of connection. Set to nonnull when connection is permanently closed.
*/
@GuardedBy("lock")
private Throwable connectionFinalStatus = null;
/*
* Contains requests buffered in the client and not yet sent to server.
*/
@GuardedBy("lock")
private final Deque<AppendRequestAndResponse> waitingRequestQueue;
/*
* Contains sent append requests waiting for response from server.
*/
@GuardedBy("lock")
private final Deque<AppendRequestAndResponse> inflightRequestQueue;
/*
* Contains the updated TableSchema.
*/
@GuardedBy("lock")
private TableSchema updatedSchema;
/*
* A client used to interact with BigQuery.
*/
private BigQueryWriteClient client;
/*
* If true, the client above is created by this writer and should be closed.
*/
private boolean ownsBigQueryWriteClient = false;
/*
* Wraps the underlying bi-directional stream connection with server.
*/
private StreamConnection streamConnection;
/*
* A separate thread to handle actual communication with server.
*/
private Thread appendThread;
/** The maximum size of one request. Defined by the API. */
public static long getApiMaxRequestBytes() {
return 10L * 1000L * 1000L; // 10 megabytes (https://en.wikipedia.org/wiki/Megabyte)
}
private StreamWriter(Builder builder) throws IOException {
this.lock = new ReentrantLock();
this.hasMessageInWaitingQueue = lock.newCondition();
this.inflightReduced = lock.newCondition();
this.streamName = builder.streamName;
if (builder.writerSchema == null) {
throw new StatusRuntimeException(
Status.fromCode(Code.INVALID_ARGUMENT)
.withDescription("Writer schema must be provided when building this writer."));
}
this.writerSchema = builder.writerSchema;
this.maxInflightRequests = builder.maxInflightRequest;
this.maxInflightBytes = builder.maxInflightBytes;
this.traceId = builder.traceId;
this.waitingRequestQueue = new LinkedList<AppendRequestAndResponse>();
this.inflightRequestQueue = new LinkedList<AppendRequestAndResponse>();
if (builder.client == null) {
BigQueryWriteSettings stubSettings =
BigQueryWriteSettings.newBuilder()
.setCredentialsProvider(builder.credentialsProvider)
.setTransportChannelProvider(builder.channelProvider)
.setEndpoint(builder.endpoint)
// (b/185842996): Temporily fix this by explicitly providing the header.
.setHeaderProvider(
FixedHeaderProvider.create(
"x-goog-request-params", "write_stream=" + this.streamName))
.build();
this.client = BigQueryWriteClient.create(stubSettings);
this.ownsBigQueryWriteClient = true;
} else {
this.client = builder.client;
this.ownsBigQueryWriteClient = false;
}
this.appendThread =
new Thread(
new Runnable() {
@Override
public void run() {
appendLoop();
}
});
this.appendThread.start();
}
private void resetConnection() {
this.streamConnection =
new StreamConnection(
this.client,
new RequestCallback() {
@Override
public void run(AppendRowsResponse response) {
requestCallback(response);
}
},
new DoneCallback() {
@Override
public void run(Throwable finalStatus) {
doneCallback(finalStatus);
}
});
}
/**
* Schedules the writing of rows at the end of current stream.
*
* @param rows the rows in serialized format to write to BigQuery.
* @return the append response wrapped in a future.
*/
public ApiFuture<AppendRowsResponse> append(ProtoRows rows) {
return append(rows, -1);
}
/**
* Schedules the writing of rows at given offset.
*
* <p>Example of writing rows with specific offset.
*
* <pre>{@code
* ApiFuture<AppendRowsResponse> future = writer.append(rows, 0);
* ApiFutures.addCallback(future, new ApiFutureCallback<AppendRowsResponse>() {
* public void onSuccess(AppendRowsResponse response) {
* if (!response.hasError()) {
* System.out.println("written with offset: " + response.getAppendResult().getOffset());
* } else {
* System.out.println("received an in stream error: " + response.getError().toString());
* }
* }
*
* public void onFailure(Throwable t) {
* System.out.println("failed to write: " + t);
* }
* }, MoreExecutors.directExecutor());
* }</pre>
*
* @param rows the rows in serialized format to write to BigQuery.
* @param offset the offset of the first row. Provide -1 to write at the current end of stream.
* @return the append response wrapped in a future.
*/
public ApiFuture<AppendRowsResponse> append(ProtoRows rows, long offset) {
AppendRowsRequest.Builder requestBuilder = AppendRowsRequest.newBuilder();
requestBuilder.setProtoRows(ProtoData.newBuilder().setRows(rows).build());
if (offset >= 0) {
requestBuilder.setOffset(Int64Value.of(offset));
}
return appendInternal(requestBuilder.build());
}
private ApiFuture<AppendRowsResponse> appendInternal(AppendRowsRequest message) {
AppendRequestAndResponse requestWrapper = new AppendRequestAndResponse(message);
if (requestWrapper.messageSize > getApiMaxRequestBytes()) {
requestWrapper.appendResult.setException(
new StatusRuntimeException(
Status.fromCode(Code.INVALID_ARGUMENT)
.withDescription(
"MessageSize is too large. Max allow: "
+ getApiMaxRequestBytes()
+ " Actual: "
+ requestWrapper.messageSize)));
return requestWrapper.appendResult;
}
this.lock.lock();
try {
if (userClosed) {
requestWrapper.appendResult.setException(
new StatusRuntimeException(
Status.fromCode(Status.Code.FAILED_PRECONDITION)
.withDescription("Stream is already closed")));
return requestWrapper.appendResult;
}
if (connectionFinalStatus != null) {
requestWrapper.appendResult.setException(
new StatusRuntimeException(
Status.fromCode(Status.Code.FAILED_PRECONDITION)
.withDescription(
"Stream is closed due to " + connectionFinalStatus.toString())));
return requestWrapper.appendResult;
}
++this.inflightRequests;
this.inflightBytes += requestWrapper.messageSize;
waitingRequestQueue.addLast(requestWrapper);
hasMessageInWaitingQueue.signal();
maybeWaitForInflightQuota();
return requestWrapper.appendResult;
} finally {
this.lock.unlock();
}
}
@GuardedBy("lock")
private void maybeWaitForInflightQuota() {
while (this.inflightRequests >= this.maxInflightRequests
|| this.inflightBytes >= this.maxInflightBytes) {
try {
inflightReduced.await(100, TimeUnit.MILLISECONDS);
} catch (InterruptedException e) {
log.warning(
"Interrupted while waiting for inflight quota. Stream: "
+ streamName
+ " Error: "
+ e.toString());
throw new StatusRuntimeException(
Status.fromCode(Code.CANCELLED)
.withCause(e)
.withDescription("Interrupted while waiting for quota."));
}
}
}
/** Close the stream writer. Shut down all resources. */
@Override
public void close() {
log.info("User closing stream: " + streamName);
this.lock.lock();
try {
this.userClosed = true;
} finally {
this.lock.unlock();
}
log.fine("Waiting for append thread to finish. Stream: " + streamName);
try {
appendThread.join();
log.info("User close complete. Stream: " + streamName);
} catch (InterruptedException e) {
// Unexpected. Just swallow the exception with logging.
log.warning(
"Append handler join is interrupted. Stream: " + streamName + " Error: " + e.toString());
}
if (this.ownsBigQueryWriteClient) {
this.client.close();
try {
this.client.awaitTermination(1, TimeUnit.MINUTES);
} catch (InterruptedException ignored) {
}
}
}
/*
* This loop is executed in a separate thread.
*
* It takes requests from waiting queue and sends them to server.
*/
private void appendLoop() {
Deque<AppendRequestAndResponse> localQueue = new LinkedList<AppendRequestAndResponse>();
boolean streamNeedsConnecting = false;
// Set firstRequestInConnection to true immediately after connecting the steam,
// indicates then next row sent, needs the schema and other metadata.
boolean isFirstRequestInConnection = true;
while (!waitingQueueDrained()) {
this.lock.lock();
try {
hasMessageInWaitingQueue.await(100, TimeUnit.MILLISECONDS);
// Copy the streamConnectionIsConnected guarded by lock to a local variable.
// In addition, only reconnect if there is a retriable error.
streamNeedsConnecting = !streamConnectionIsConnected && connectionFinalStatus == null;
if (streamNeedsConnecting) {
// If the stream connection is broken, any requests on inflightRequestQueue will need
// to be resent, as the new connection has no knowledge of the requests. Copy the requests
// from inflightRequestQueue and prepent them onto the waitinRequestQueue. They need to be
// prepended as they need to be sent before new requests.
while (!inflightRequestQueue.isEmpty()) {
waitingRequestQueue.addFirst(inflightRequestQueue.pollLast());
}
}
while (!this.waitingRequestQueue.isEmpty()) {
AppendRequestAndResponse requestWrapper = this.waitingRequestQueue.pollFirst();
this.inflightRequestQueue.addLast(requestWrapper);
localQueue.addLast(requestWrapper);
}
} catch (InterruptedException e) {
log.warning(
"Interrupted while waiting for message. Stream: "
+ streamName
+ " Error: "
+ e.toString());
} finally {
this.lock.unlock();
}
if (localQueue.isEmpty()) {
continue;
}
if (streamNeedsConnecting) {
// Set streamConnectionIsConnected to true, to indicate the stream has been connected. This
// should happen before the call to resetConnection. As it is unknown when the connection
// could be closed and the doneCallback called, and thus clearing the flag.
lock.lock();
try {
this.streamConnectionIsConnected = true;
} finally {
lock.unlock();
}
resetConnection();
// Set firstRequestInConnection to indicate the next request to be sent should include
// metedata.
isFirstRequestInConnection = true;
}
while (!localQueue.isEmpty()) {
AppendRowsRequest preparedRequest =
prepareRequestBasedOnPosition(
localQueue.pollFirst().message, isFirstRequestInConnection);
// Send should only throw an exception if there is a problem with the request. The catch
// block will handle this case, and return the exception with the result.
// Otherwise send will return:
// SUCCESS: Message was sent, wait for the callback.
// STREAM_CLOSED: Stream was closed, normally or due to en error
// NOT_ENOUGH_QUOTA: Message wasn't sent due to not enough quota.
// TODO: Handle NOT_ENOUGH_QUOTA.
// In the close case, the request is in the inflight queue, and will either be returned
// to the user with an error, or will be resent.
this.streamConnection.send(preparedRequest);
isFirstRequestInConnection = false;
}
}
log.fine("Cleanup starts. Stream: " + streamName);
// At this point, the waiting queue is drained, so no more requests.
// We can close the stream connection and handle the remaining inflight requests.
if (streamConnection != null) {
this.streamConnection.close();
waitForDoneCallback();
}
// At this point, there cannot be more callback. It is safe to clean up all inflight requests.
log.fine(
"Stream connection is fully closed. Cleaning up inflight requests. Stream: " + streamName);
cleanupInflightRequests();
log.fine("Append thread is done. Stream: " + streamName);
}
/*
* Returns true if waiting queue is drain, a.k.a. no more requests in the waiting queue.
*
* It serves as a signal to append thread that there cannot be any more requests in the waiting
* queue and it can prepare to stop.
*/
private boolean waitingQueueDrained() {
this.lock.lock();
try {
return (this.userClosed || this.connectionFinalStatus != null)
&& this.waitingRequestQueue.isEmpty();
} finally {
this.lock.unlock();
}
}
private void waitForDoneCallback() {
log.fine("Waiting for done callback from stream connection. Stream: " + streamName);
while (true) {
this.lock.lock();
try {
if (connectionFinalStatus != null) {
// Done callback is received, return.
return;
}
} finally {
this.lock.unlock();
}
Uninterruptibles.sleepUninterruptibly(100, TimeUnit.MILLISECONDS);
}
}
private AppendRowsRequest prepareRequestBasedOnPosition(
AppendRowsRequest original, boolean isFirstRequest) {
AppendRowsRequest.Builder requestBuilder = original.toBuilder();
if (isFirstRequest) {
if (this.writerSchema != null) {
requestBuilder.getProtoRowsBuilder().setWriterSchema(this.writerSchema);
}
requestBuilder.setWriteStream(this.streamName);
if (this.traceId != null) {
requestBuilder.setTraceId(this.traceId);
}
} else {
requestBuilder.clearWriteStream();
requestBuilder.getProtoRowsBuilder().clearWriterSchema();
}
return requestBuilder.build();
}
private void cleanupInflightRequests() {
Throwable finalStatus = new Exceptions.WriterClosedException(streamName);
Deque<AppendRequestAndResponse> localQueue = new LinkedList<AppendRequestAndResponse>();
this.lock.lock();
try {
if (this.connectionFinalStatus != null) {
finalStatus = this.connectionFinalStatus;
}
while (!this.inflightRequestQueue.isEmpty()) {
localQueue.addLast(pollInflightRequestQueue());
}
} finally {
this.lock.unlock();
}
log.fine("Cleaning " + localQueue.size() + " inflight requests with error: " + finalStatus);
while (!localQueue.isEmpty()) {
localQueue.pollFirst().appendResult.setException(finalStatus);
}
}
private void requestCallback(AppendRowsResponse response) {
AppendRequestAndResponse requestWrapper;
this.lock.lock();
if (response.hasUpdatedSchema()) {
this.updatedSchema = response.getUpdatedSchema();
}
try {
// Had a successful connection with at least one result, reset retries.
// conectionRetryCountWithoutCallback is reset so that only multiple retries, without
// successful records sent, will cause the stream to fail.
if (conectionRetryCountWithoutCallback != 0) {
conectionRetryCountWithoutCallback = 0;
}
requestWrapper = pollInflightRequestQueue();
} finally {
this.lock.unlock();
}
if (response.hasError()) {
Exceptions.StorageException storageException =
Exceptions.toStorageException(response.getError(), null);
if (storageException != null) {
requestWrapper.appendResult.setException(storageException);
} else {
StatusRuntimeException exception =
new StatusRuntimeException(
Status.fromCodeValue(response.getError().getCode())
.withDescription(response.getError().getMessage()));
requestWrapper.appendResult.setException(exception);
}
} else {
requestWrapper.appendResult.set(response);
}
}
private boolean isRetriableError(Throwable t) {
Status status = Status.fromThrowable(t);
if (Errors.isRetryableInternalStatus(status)) {
return true;
}
return status.getCode() == Status.Code.ABORTED || status.getCode() == Status.Code.UNAVAILABLE;
}
private void doneCallback(Throwable finalStatus) {
log.fine(
"Received done callback. Stream: "
+ streamName
+ " Final status: "
+ finalStatus.toString());
this.lock.lock();
try {
this.streamConnectionIsConnected = false;
if (connectionFinalStatus == null) {
// If the error can be retried, don't set it here, let it try to retry later on.
if (isRetriableError(finalStatus)
&& conectionRetryCountWithoutCallback < RETRY_THRESHOLD
&& !userClosed) {
this.conectionRetryCountWithoutCallback++;
log.fine(
"Retriable error "
+ finalStatus.toString()
+ " received, retry count "
+ conectionRetryCountWithoutCallback
+ " for stream "
+ streamName);
} else {
Exceptions.StorageException storageException = Exceptions.toStorageException(finalStatus);
this.connectionFinalStatus = storageException != null ? storageException : finalStatus;
log.info(
"Stream finished with error " + finalStatus.toString() + " for stream " + streamName);
}
}
} finally {
this.lock.unlock();
}
}
@GuardedBy("lock")
private AppendRequestAndResponse pollInflightRequestQueue() {
AppendRequestAndResponse requestWrapper = this.inflightRequestQueue.pollFirst();
--this.inflightRequests;
this.inflightBytes -= requestWrapper.messageSize;
this.inflightReduced.signal();
return requestWrapper;
}
/**
* Constructs a new {@link StreamWriterV2.Builder} using the given stream and client. AppendRows
* needs special headers to be added to client, so a passed in client will not work. This should
* be used by test only.
*/
public static StreamWriter.Builder newBuilder(String streamName, BigQueryWriteClient client) {
return new StreamWriter.Builder(streamName, client);
}
/** Constructs a new {@link StreamWriterV2.Builder} using the given stream. */
public static StreamWriter.Builder newBuilder(String streamName) {
return new StreamWriter.Builder(streamName);
}
/** Thread-safe getter of updated TableSchema */
public synchronized TableSchema getUpdatedSchema() {
return this.updatedSchema;
}
/** A builder of {@link StreamWriter}s. */
public static final class Builder {
private static final long DEFAULT_MAX_INFLIGHT_REQUESTS = 1000L;
private static final long DEFAULT_MAX_INFLIGHT_BYTES = 100 * 1024 * 1024; // 100Mb.
private String streamName;
private BigQueryWriteClient client;
private ProtoSchema writerSchema = null;
private long maxInflightRequest = DEFAULT_MAX_INFLIGHT_REQUESTS;
private long maxInflightBytes = DEFAULT_MAX_INFLIGHT_BYTES;
private String endpoint = BigQueryWriteSettings.getDefaultEndpoint();
private TransportChannelProvider channelProvider =
BigQueryWriteSettings.defaultGrpcTransportProviderBuilder().setChannelsPerCpu(1).build();
private CredentialsProvider credentialsProvider =
BigQueryWriteSettings.defaultCredentialsProviderBuilder().build();
private String traceId = null;
private TableSchema updatedTableSchema = null;
private Builder(String streamName) {
this.streamName = Preconditions.checkNotNull(streamName);
this.client = null;
}
private Builder(String streamName, BigQueryWriteClient client) {
this.streamName = Preconditions.checkNotNull(streamName);
this.client = Preconditions.checkNotNull(client);
}
/** Sets the proto schema of the rows. */
public Builder setWriterSchema(ProtoSchema writerSchema) {
this.writerSchema = writerSchema;
return this;
}
public Builder setMaxInflightRequests(long value) {
this.maxInflightRequest = value;
return this;
}
public Builder setMaxInflightBytes(long value) {
this.maxInflightBytes = value;
return this;
}
/** Gives the ability to override the gRPC endpoint. */
public Builder setEndpoint(String endpoint) {
this.endpoint = Preconditions.checkNotNull(endpoint, "Endpoint is null.");
return this;
}
/**
* {@code ChannelProvider} to use to create Channels, which must point at Cloud BigQuery Storage
* API endpoint.
*
* <p>For performance, this client benefits from having multiple underlying connections. See
* {@link com.google.api.gax.grpc.InstantiatingGrpcChannelProvider.Builder#setPoolSize(int)}.
*/
public Builder setChannelProvider(TransportChannelProvider channelProvider) {
this.channelProvider =
Preconditions.checkNotNull(channelProvider, "ChannelProvider is null.");
return this;
}
/** {@code CredentialsProvider} to use to create Credentials to authenticate calls. */
public Builder setCredentialsProvider(CredentialsProvider credentialsProvider) {
this.credentialsProvider =
Preconditions.checkNotNull(credentialsProvider, "CredentialsProvider is null.");
return this;
}
/**
* Sets traceId for debuging purpose. TraceId must follow the format of
* CustomerDomain:DebugString, e.g. DATAFLOW:job_id_x.
*/
public Builder setTraceId(String traceId) {
int colonIndex = traceId.indexOf(':');
if (colonIndex == -1 || colonIndex == 0 || colonIndex == traceId.length() - 1) {
throw new IllegalArgumentException(
"TraceId must follow the format of A:B. Actual:" + traceId);
}
this.traceId = traceId;
return this;
}
/** Builds the {@code StreamWriterV2}. */
public StreamWriter build() throws IOException {
return new StreamWriter(this);
}
}
// Class that wraps AppendRowsRequest and its corresponding Response future.
private static final class AppendRequestAndResponse {
final SettableApiFuture<AppendRowsResponse> appendResult;
final AppendRowsRequest message;
final long messageSize;
AppendRequestAndResponse(AppendRowsRequest message) {
this.appendResult = SettableApiFuture.create();
this.message = message;
this.messageSize = message.getProtoRows().getSerializedSize();
}
}
}