/// <summary>
/// Asynchronously polls the operation until it is complete, returning the completed operation.
/// </summary>
/// <remarks>
/// <para>
/// If this object already represents a completed operation, it is returned with no further RPCs.
/// If <paramref name="metadataCallback"/> is non-null, the callback will be called with any metadata
/// present before the result is returned.
/// </para>
/// <para>
/// No guarantee is made as to which thread is used for metadata callbacks. However, each callback is
/// performed synchronously: this method waits for the callback to complete before the operation is next polled.
/// This guarantees that for a single call, metadata callbacks will never occur in parallel.
/// </para>
/// </remarks>
/// <param name="pollSettings">The settings to use for repeated polling, or null
/// to use the default poll settings (poll once every 10 seconds, forever).</param>
/// <param name="callSettings">The call settings to apply on each call, or null for default settings.</param>
/// <param name="metadataCallback">The callback to invoke with the metadata from each poll operation, even if the metadata is null.</param>
/// <returns>The completed operation, which can then be checked for errors or a result.</returns>
public Task <Operation <TResponse, TMetadata> > PollUntilCompletedAsync(
PollSettings pollSettings = null,
CallSettings callSettings = null,
Action <TMetadata> metadataCallback = null)
{
if (IsCompleted)
{
metadataCallback?.Invoke(Metadata);
return(Task.FromResult(this));
}
// We need to work out the effective timing so that we can truncate any deadline, but anything else
// that's in the effective call settings can be left to the normal merging process. In particular,
// we don't want to include the header mutation that adds the version header, as otherwise we'll end up
// including it twice.
var effectiveTiming = Client.GetEffectiveCallSettingsForGetOperation(callSettings)?.Timing;
callSettings = callSettings.WithCallTiming(effectiveTiming);
Func <DateTime?, Task <Operation <TResponse, TMetadata> > > pollAction =
async deadline =>
{
var result = await PollOnceAsync(callSettings.WithEarlierDeadline(deadline, Client.Clock)).ConfigureAwait(false);
metadataCallback?.Invoke(result.Metadata);
return(result);
};
return(Polling.PollRepeatedlyAsync(
pollAction, o => o.IsCompleted,
Client.Clock, Client.Scheduler, pollSettings ?? Client.DefaultPollSettings ?? s_defaultPollSettings,
callSettings?.CancellationToken ?? CancellationToken.None));
}
/// <summary>
/// Asynchronously polls the operation until it is complete, returning the completed operation.
/// </summary>
/// <remarks>
/// <para>
/// If this object already represents a completed operation, it is returned with no further RPCs.
/// If <paramref name="metadataCallback"/> is non-null, the callback will be called with any metadata
/// present before the result is returned.
/// </para>
/// <para>
/// No guarantee is made as to which thread is used for metadata callbacks. However, each callback is
/// performed synchronously: this method waits for the callback to complete before the operation is next polled.
/// This guarantees that for a single call, metadata callbacks will never occur in parallel.
/// </para>
/// </remarks>
/// <param name="pollSettings">The settings to use for repeated polling, or null
/// to use the default poll settings (poll once every 10 seconds, forever).</param>
/// <param name="callSettings">The call settings to apply on each call, or null for default settings.</param>
/// <param name="metadataCallback">The callback to invoke with the metadata from each poll operation, even if the metadata is null.</param>
/// <returns>The completed operation, which can then be checked for errors or a result.</returns>
public Task <Operation <TResponse, TMetadata> > PollUntilCompletedAsync(
PollSettings pollSettings = null,
CallSettings callSettings = null,
Action <TMetadata> metadataCallback = null)
{
if (IsCompleted)
{
metadataCallback?.Invoke(Metadata);
return(Task.FromResult(this));
}
callSettings = Client.GetEffectiveCallSettingsForGetOperation(callSettings);
Func <DateTime?, Task <Operation <TResponse, TMetadata> > > pollAction =
async deadline =>
{
var result = await PollOnceAsync(callSettings.WithEarlierDeadline(deadline, Client.Clock)).ConfigureAwait(false);
metadataCallback?.Invoke(result.Metadata);
return(result);
};
return(Polling.PollRepeatedlyAsync(
pollAction, o => o.IsCompleted,
Client.Clock, Client.Scheduler, pollSettings ?? Client.DefaultPollSettings ?? s_defaultPollSettings,
callSettings?.CancellationToken ?? CancellationToken.None));
}
/// <summary>
/// Asynchronously but eagerly fetches a set of rows, up to the specified count, providing a page of results with a next page token
/// if more results are available. This is typically used within web applications, where the next page token
/// is propagated to the client along with the results, so that the next page can be retrieved in another request.
/// If the job is still incompleted, it is polled until it has completed.
/// </summary>
/// <remarks>
/// If <paramref name="pageSize"/> is smaller than the number of rows originally requested,
/// this may require another server call to retrieve an appropriate page token. When working
/// in pages, always specify a maximum per-request number of rows less than or equal to the
/// page size you want.
/// </remarks>
/// <param name="pageSize">The maximum number of rows to retrieve. Must be positive.</param>
/// <param name="pollSettings">The settings to control how often and long the job is fetched before timing out if it is still incomplete.
/// May be null, in which case defaults will be supplied.</param>
/// <param name="cancellationToken">The token to monitor for cancellation requests.</param>
/// <returns>A task representing the asynchronous operation. When complete, the result is
/// an in-memory result set of at most the given number of rows.</returns>
public async Task <BigQueryPage> ReadPageAsync(int pageSize, PollSettings pollSettings = null, CancellationToken cancellationToken = default(CancellationToken))
{
GaxPreconditions.CheckArgumentRange(pageSize, nameof(pageSize), 1, int.MaxValue);
var job = await PollUntilCompletedAsync(pollSettings, cancellationToken).ConfigureAwait(false);
return(await job.ReadPageAsyncImpl(pageSize, cancellationToken).ConfigureAwait(false));
}
public async Task PollUntilCompletedAsync_AlreadyCompleted()
{
var client = new FakeOperationsClient();
client.AddSuccessfulOperation("op", client.Clock.GetCurrentDateTimeUtc(), new StringValue {
Value = "result"
});
var initial = Operation <StringValue, Timestamp> .PollOnceFromName("op", client);
Assert.True(initial.IsCompleted);
var expectedMetadata = GenerateExpectedMetadata(client.Clock, 0);
List <Timestamp> actualMetadata = new List <Timestamp>();
await client.FakeScheduler.RunAsync(async() =>
{
Assert.Equal(1, client.RequestCount);
var settings = new PollSettings(Expiration.FromTimeout(TimeSpan.FromSeconds(5)), TimeSpan.FromSeconds(2));
var final = await initial.PollUntilCompletedAsync(settings, metadataCallback: actualMetadata.Add);
Assert.Equal("result", final.Result.Value);
// No more requests due to PollUntilCompletedAsync call
Assert.Equal(1, client.RequestCount);
});
// Metadata was still added despite no RPCs being made
Assert.Equal(expectedMetadata, actualMetadata);
}
/// <summary>
/// Polls the operation until it is complete, returning the completed operation.
/// </summary>
/// <remarks>
/// <para>
/// If this object already represents a completed operation, it is returned with no further RPCs.
/// If <paramref name="metadataCallback"/> is non-null, the callback will be called with any metadata
/// present before the result is returned.
/// </para>
/// <para>
/// Each callback is performed synchronously: this method waits for the callback to complete before the operation is next polled.
/// This guarantees that for a single call, metadata callbacks will never occur in parallel.
/// </para>
/// </remarks>
/// <param name="pollSettings">The settings to use for repeated polling, or null
/// to use the default poll settings (poll once every 10 seconds, forever).</param>
/// <param name="callSettings">The call settings to apply on each call, or null for default settings.</param>
/// <param name="metadataCallback">The callback to invoke with the metadata from each poll operation, even if the metadata is null.</param>
/// <returns>The completed operation, which can then be checked for errors or a result.</returns>
public Operation <TResponse, TMetadata> PollUntilCompleted(
PollSettings pollSettings = null,
CallSettings callSettings = null,
Action <TMetadata> metadataCallback = null)
{
if (IsCompleted)
{
metadataCallback?.Invoke(Metadata);
return(this);
}
callSettings = Client.GetEffectiveCallSettingsForGetOperation(callSettings);
Func <DateTime?, Operation <TResponse, TMetadata> > pollAction =
deadline =>
{
var result = PollOnce(callSettings.WithEarlierDeadline(deadline, Client.Clock));
metadataCallback?.Invoke(result.Metadata);
return(result);
};
return(Polling.PollRepeatedly(
pollAction, o => o.IsCompleted,
Client.Clock, Client.Scheduler, pollSettings ?? Client.DefaultPollSettings ?? s_defaultPollSettings,
callSettings?.CancellationToken ?? CancellationToken.None));
}
public void SuccessfulConstruction()
{
var expiration = Expiration.FromTimeout(TimeSpan.FromSeconds(1));
var delay = TimeSpan.FromSeconds(2);
var settings = new PollSettings(expiration, delay);
Assert.Same(expiration, settings.Expiration);
Assert.Equal(delay, settings.Delay);
}
/// <summary>
/// Polls the server until the batch job execution finishes by setting the total
/// time to wait before time-out.
/// </summary>
/// <param name="operationResponse">The operation response used to poll the server.</param>
private static void PollBatchJob(Operation <Empty, BatchJobMetadata> operationResponse)
{
PollSettings pollSettings = new PollSettings(
Expiration.FromTimeout(TimeSpan.FromSeconds(MAX_TOTAL_POLL_INTERVAL_SECONDS)),
TimeSpan.FromSeconds(1));
operationResponse.PollUntilCompleted(pollSettings);
}
/// <inheritdoc />
public override Task <BigQueryJob> PollJobUntilCompletedAsync(JobReference jobReference, GetJobOptions options = null,
PollSettings pollSettings = null, CancellationToken cancellationToken = default)
{
GaxPreconditions.CheckNotNull(jobReference, nameof(jobReference));
return(Polling.PollRepeatedlyAsync(ignoredDeadline => GetJobAsync(jobReference, options, cancellationToken),
job => job.State == JobState.Done,
Clock, Scheduler, pollSettings ?? s_defaultPollSettings, cancellationToken));
}
public AsyncRowEnumerator(BigQueryResults job, PollSettings pollSettings)
{
_job = job;
_pollSettings = pollSettings;
_options = _job._options?.Clone() ?? new GetQueryResultsOptions();
_options.StartIndex = null;
_options.PageToken = _job._response.PageToken;
}
public void SuccessfulConstruction()
{
var expiration = Expiration.FromTimeout(TimeSpan.FromSeconds(1));
var delay = TimeSpan.FromSeconds(2);
var settings = new PollSettings(expiration, delay);
Assert.Same(expiration, settings.Expiration);
Assert.Equal(delay, settings.Delay);
}
public void PollToCompletion_Success()
{
var pollSource = new PollSource(TimeSpan.FromSeconds(3), 5);
var pollSettings = new PollSettings(Expiration.FromTimeout(TimeSpan.FromSeconds(5)), TimeSpan.FromSeconds(2));
pollSource.Scheduler.Run(() =>
{
var result = pollSource.PollRepeatedly(pollSettings);
Assert.Equal(5, result);
Assert.Equal(TimeSpan.FromSeconds(4), pollSource.RunningTime);
});
}
public async Task PollToCompletionAsync_Success()
{
var pollSource = new PollSource(TimeSpan.FromSeconds(3), 5);
var pollSettings = new PollSettings(Expiration.FromTimeout(TimeSpan.FromSeconds(5)), TimeSpan.FromSeconds(2));
await pollSource.Scheduler.RunAsync(async () =>
{
var result = await pollSource.PollRepeatedlyAsync(pollSettings);
Assert.Equal(5, result);
Assert.Equal(TimeSpan.FromSeconds(4), pollSource.RunningTime);
});
}
/// <summary>
/// Asynchronously polls the operation until it is complete, returning the completed operation.
/// </summary>
/// <remarks>
/// If this object already represents a completed operation, it is returned immediately,
/// with no further RPCs.
/// </remarks>
/// <param name="pollSettings">The settings to use for repeated polling, or null
/// to use the default poll settings (poll once every 10 seconds, forever).</param>
/// <param name="callSettings">The call settings to apply on each call, or null for default settings.</param>
/// <returns>The completed operation, which can then be checked for errors or a result.</returns>
public Task <Operation <T> > PollUntilCompletedAsync(PollSettings pollSettings = null, CallSettings callSettings = null)
{
if (IsCompleted)
{
return(Task.FromResult(this));
}
// TODO: Use the deadline.
Func <DateTime?, Task <Operation <T> > > pollAction = deadline => PollOnceAsync(callSettings);
return(Polling.PollRepeatedlyAsync(pollAction, o => o.IsCompleted, Client.Clock, Client.Scheduler, pollSettings ?? s_defaultPollSettings));
}
public async Task PollToCompletionAsync_Timeout()
{
var pollSource = new PollSource(TimeSpan.FromSeconds(10), 5);
var pollSettings = new PollSettings(Expiration.FromTimeout(TimeSpan.FromSeconds(5)), TimeSpan.FromSeconds(2));
await pollSource.Scheduler.RunAsync(async () =>
{
await Assert.ThrowsAsync<TimeoutException>(() => pollSource.PollRepeatedlyAsync(pollSettings));
// We give up at t=4 because the next call would be after the expiration.
Assert.Equal(TimeSpan.FromSeconds(4), pollSource.RunningTime);
});
}
public async Task PollToCompletionAsync_Timeout()
{
var pollSource = new PollSource(TimeSpan.FromSeconds(10), 5);
var pollSettings = new PollSettings(Expiration.FromTimeout(TimeSpan.FromSeconds(5)), TimeSpan.FromSeconds(2));
await pollSource.Scheduler.RunAsync(async() =>
{
await Assert.ThrowsAsync <TimeoutException>(() => pollSource.PollRepeatedlyAsync(pollSettings, CancellationToken.None));
// We give up at t=4 because the next call would be after the expiration.
Assert.Equal(TimeSpan.FromSeconds(4), pollSource.RunningTime);
});
}
public async Task PollToCompletionExponentialAsync_Success()
{
var pollSource = new PollSource(TimeSpan.FromSeconds(7), 5);
var pollSettings = new PollSettings(Expiration.FromTimeout(TimeSpan.FromSeconds(20)), TimeSpan.FromSeconds(1), 2.0, TimeSpan.FromSeconds(3));
await pollSource.Scheduler.RunAsync(async() =>
{
var result = await pollSource.PollRepeatedlyAsync(pollSettings, CancellationToken.None);
Assert.Equal(5, result);
Assert.Equal(TimeSpan.FromSeconds(9), pollSource.RunningTime);
});
}
public void SuccessfulConstructionExponential()
{
var expiration = Expiration.FromTimeout(TimeSpan.FromSeconds(1));
var delay = TimeSpan.FromSeconds(2);
var maxDelay = TimeSpan.FromSeconds(3);
var settings = new PollSettings(expiration, delay, 2.0, maxDelay);
Assert.Same(expiration, settings.Expiration);
Assert.Equal(delay, settings.Delay);
Assert.Equal(2.0, settings.DelayMultiplier);
Assert.Equal(maxDelay, settings.MaxDelay);
}
public void PollToCompletion_Success()
{
var pollSource = new PollSource(TimeSpan.FromSeconds(3), 5);
var pollSettings = new PollSettings(Expiration.FromTimeout(TimeSpan.FromSeconds(5)), TimeSpan.FromSeconds(2));
pollSource.Scheduler.Run(() =>
{
var result = pollSource.PollRepeatedly(pollSettings, CancellationToken.None);
Assert.Equal(5, result);
Assert.Equal(TimeSpan.FromSeconds(4), pollSource.RunningTime);
});
}
public void PollJobUntilCompletedEquivalents()
{
var jobId = "job";
var reference = GetJobReference(jobId);
var options = new GetJobOptions();
var pollSettings = new PollSettings(Expiration.None, TimeSpan.Zero);
VerifyEquivalent(new BigQueryJob(new DerivedBigQueryClient(), GetJob(reference)),
client => client.PollJobUntilCompleted(MatchesWhenSerialized(reference), options, pollSettings),
client => client.PollJobUntilCompleted(jobId, options, pollSettings),
client => client.PollJobUntilCompleted(ProjectId, jobId, options, pollSettings),
client => new BigQueryJob(client, GetJob(reference)).PollUntilCompleted(options, pollSettings));
}
/// <summary>
/// Asynchronously polls the operation until it is complete, returning the completed operation.
/// </summary>
/// <remarks>
/// If this object already represents a completed operation, it is returned immediately,
/// with no further RPCs.
/// </remarks>
/// <param name="pollSettings">The settings to use for repeated polling, or null
/// to use the default poll settings (poll once every 10 seconds, forever).</param>
/// <param name="callSettings">The call settings to apply on each call, or null for default settings.</param>
/// <returns>The completed operation, which can then be checked for errors or a result.</returns>
public Task <Operation <T> > PollUntilCompletedAsync(PollSettings pollSettings = null, CallSettings callSettings = null)
{
if (IsCompleted)
{
return(Task.FromResult(this));
}
callSettings = Client.GetEffectiveCallSettingsForGetOperation(callSettings);
Func <DateTime?, Task <Operation <T> > > pollAction = deadline => PollOnceAsync(callSettings.WithEarlierDeadline(deadline, Client.Clock));
return(Polling.PollRepeatedlyAsync(
pollAction, o => o.IsCompleted,
Client.Clock, Client.Scheduler, pollSettings ?? s_defaultPollSettings,
callSettings?.CancellationToken ?? CancellationToken.None));
}
public void PollJobUntilCompletedAsyncEquivalents()
{
var jobId = "job";
var reference = GetJobReference(jobId);
var options = new GetJobOptions();
var pollSettings = new PollSettings(Expiration.None, TimeSpan.Zero);
var token = new CancellationTokenSource().Token;
VerifyEquivalentAsync(new BigqueryJob(new DerivedBigqueryClient(), GetJob(reference)),
client => client.PollJobUntilCompletedAsync(MatchesWhenSerialized(reference), options, pollSettings, token),
client => client.PollJobUntilCompletedAsync(jobId, options, pollSettings, token),
client => client.PollJobUntilCompletedAsync(ProjectId, jobId, options, pollSettings, token),
client => new BigqueryJob(client, GetJob(reference)).PollUntilCompletedAsync(options, pollSettings, token));
}
/// <summary>
/// Polls the operation until it is complete, returning the completed operation.
/// </summary>
/// <remarks>
/// If this object already represents a completed operation, it is returned immediately,
/// with no further RPCs.
/// </remarks>
/// <param name="pollSettings">The settings to use for repeated polling, or null
/// to use the default poll settings (poll once every 10 seconds, forever).</param>
/// <param name="callSettings">The call settings to apply on each call, or null for default settings.</param>
/// <returns>The completed operation, which can then be checked for errors or a result.</returns>
public Operation <T> PollUntilCompleted(PollSettings pollSettings = null, CallSettings callSettings = null)
{
if (IsCompleted)
{
return(this);
}
// TODO: Use the deadline and get a cancellation token from the effective call settings.
Func <DateTime?, Operation <T> > pollAction = deadline => PollOnce(callSettings);
return(Polling.PollRepeatedly(
pollAction, o => o.IsCompleted,
Client.Clock, Client.Scheduler, pollSettings ?? s_defaultPollSettings,
CancellationToken.None));
}
public async Task PollUntilCompletedAsync_Timeout()
{
var client = new FakeOperationsClient();
await client.FakeScheduler.RunAsync(async() =>
{
client.AddSuccessfulOperation("op", client.Clock.GetCurrentDateTimeUtc().AddSeconds(10), new StringValue {
Value = "result"
});
var initial = Operation <StringValue> .PollOnceFromNameAsync("op", client).Result;
// Second request at t=0, then at t=2, then at t=4, then we give up.
var settings = new PollSettings(Expiration.FromTimeout(TimeSpan.FromSeconds(5)), TimeSpan.FromSeconds(2));
await Assert.ThrowsAsync <TimeoutException>(() => initial.PollUntilCompletedAsync(settings));
});
Assert.Equal(4, client.RequestCount);
}
public async Task PollUntilCompletedAsync_Success()
{
var client = new FakeOperationsClient();
await client.FakeScheduler.RunAsync(async() =>
{
client.AddSuccessfulOperation("op", client.Clock.GetCurrentDateTimeUtc().AddSeconds(3), new StringValue {
Value = "result"
});
var initial = Operation <StringValue> .PollOnceFromNameAsync("op", client).Result;
var settings = new PollSettings(Expiration.FromTimeout(TimeSpan.FromSeconds(5)), TimeSpan.FromSeconds(2));
// Second request at t=2, then another at t=4
var completedOperation = await initial.PollUntilCompletedAsync(settings);
Assert.Equal("result", completedOperation.Result.Value);
});
Assert.Equal(4, client.RequestCount);
}
public void PollUntilCompleted_Success()
{
var client = new FakeOperationsClient();
client.FakeScheduler.Run(() =>
{
client.AddSuccessfulOperation("op", client.Clock.GetCurrentDateTimeUtc().AddSeconds(3), new StringValue {
Value = "result"
});
var initial = Operation <StringValue> .PollOnceFromName("op", client);
var settings = new PollSettings(Expiration.FromTimeout(TimeSpan.FromSeconds(5)), TimeSpan.FromSeconds(2));
// Second request at t=2, then another at t=4
var final = initial.PollUntilCompleted(settings);
Assert.Equal("result", final.Result.Value);
Assert.Equal(4, client.RequestCount);
return(0); // TODO: Remove the need for this, by improving FakeScheduler.
});
}
public void PollUntilCompleted_Timeout()
{
var client = new FakeOperationsClient();
var expectedMetadata = GenerateExpectedMetadata(client.Clock, 0, 2, 4);
List <Timestamp> actualMetadata = new List <Timestamp>();
client.FakeScheduler.Run(() =>
{
client.AddSuccessfulOperation("op", client.Clock.GetCurrentDateTimeUtc().AddSeconds(10), new StringValue {
Value = "result"
});
var initial = Operation <StringValue, Timestamp> .PollOnceFromName("op", client);
// Second request at t=0, then at t=2, then at t=4, then we give up.
var settings = new PollSettings(Expiration.FromTimeout(TimeSpan.FromSeconds(5)), TimeSpan.FromSeconds(2));
Assert.Throws <TimeoutException>(() => initial.PollUntilCompleted(settings, metadataCallback: actualMetadata.Add));
Assert.Equal(4, client.RequestCount);
});
Assert.Equal(expectedMetadata, actualMetadata);
}
public void PollQueryUntilCompletedEquivalents()
{
var jobId = "job";
var reference = GetJobReference(jobId);
var getQueryResultsOptions = new GetQueryResultsOptions();
var pollSettings = new PollSettings(Expiration.None, TimeSpan.Zero);
VerifyEquivalent(
new BigQueryResults(new DerivedBigQueryClient(), new GetQueryResultsResponse {
JobReference = reference
}, getQueryResultsOptions),
client => client.PollQueryUntilCompleted(MatchesWhenSerialized(reference), getQueryResultsOptions, pollSettings),
client => client.PollQueryUntilCompleted(jobId, getQueryResultsOptions, pollSettings),
client => client.PollQueryUntilCompleted(ProjectId, jobId, getQueryResultsOptions, pollSettings),
client => new BigQueryJob(client, GetJob(reference)).PollQueryUntilCompleted(getQueryResultsOptions, pollSettings),
client => new BigQueryResults(client, new GetQueryResultsResponse {
JobReference = reference
}, getQueryResultsOptions).PollUntilCompleted(pollSettings));
}
public async Task PollUntilCompletedAsync_Success()
{
var client = new FakeOperationsClient();
var expectedMetadata = GenerateExpectedMetadata(client.Clock, 0, 2, 3);
List <Timestamp> actualMetadata = new List <Timestamp>();
await client.FakeScheduler.RunAsync(async() =>
{
client.AddSuccessfulOperation("op", client.Clock.GetCurrentDateTimeUtc().AddSeconds(3), new StringValue {
Value = "result"
});
var initial = Operation <StringValue, Timestamp> .PollOnceFromNameAsync("op", client).Result;
var settings = new PollSettings(Expiration.FromTimeout(TimeSpan.FromSeconds(5)), TimeSpan.FromSeconds(2));
// Second request at t=0, then at t=2, then another at t=4
var completedOperation = await initial.PollUntilCompletedAsync(settings, metadataCallback: actualMetadata.Add);
Assert.Equal("result", completedOperation.Result.Value);
});
Assert.Equal(4, client.RequestCount);
Assert.Equal(expectedMetadata, actualMetadata);
}
/// <summary>
/// Polls the operation until it is complete, returning the completed operation.
/// </summary>
/// <remarks>
/// <para>
/// If this object already represents a completed operation, it is returned with no further RPCs.
/// If <paramref name="metadataCallback"/> is non-null, the callback will be called with any metadata
/// present before the result is returned.
/// </para>
/// <para>
/// Each callback is performed synchronously: this method waits for the callback to complete before the operation is next polled.
/// This guarantees that for a single call, metadata callbacks will never occur in parallel.
/// </para>
/// </remarks>
/// <param name="pollSettings">The settings to use for repeated polling, or null
/// to use the default poll settings (poll once every 10 seconds, forever).</param>
/// <param name="callSettings">The call settings to apply on each call, or null for default settings.</param>
/// <param name="metadataCallback">The callback to invoke with the metadata from each poll operation, even if the metadata is null.</param>
/// <returns>The completed operation, which can then be checked for errors or a result.</returns>
public Operation <TResponse, TMetadata> PollUntilCompleted(
PollSettings pollSettings = null,
CallSettings callSettings = null,
Action <TMetadata> metadataCallback = null)
{
if (IsCompleted)
{
metadataCallback?.Invoke(Metadata);
return(this);
}
// We need to work out the effective expiration so that we can truncate any deadline, but anything else
// that's in the effective call settings can be left to the normal merging process. In particular,
// we don't want to include the header mutation that adds the version header, as otherwise we'll end up
// including it twice.
var effectiveExpiration = Client.GetEffectiveCallSettingsForGetOperation(callSettings)?.Expiration;
if (effectiveExpiration != null)
{
callSettings = callSettings.WithExpiration(effectiveExpiration);
}
// TODO: Retry settings?
Func <DateTime?, Operation <TResponse, TMetadata> > pollAction =
deadline =>
{
var result = PollOnce(callSettings.WithEarlierDeadline(deadline, Client.Clock));
metadataCallback?.Invoke(result.Metadata);
return(result);
};
return(Polling.PollRepeatedly(
pollAction, o => o.IsCompleted,
Client.Clock, Client.Scheduler, pollSettings ?? Client.DefaultPollSettings ?? s_defaultPollSettings,
callSettings?.CancellationToken ?? CancellationToken.None));
}
public void PollUntilCompleted_NullMetadata()
{
var client = new FakeOperationsClient {
GenerateMetadata = false
};
var expectedMetadata = new List <Timestamp> {
null, null, null
};
List <Timestamp> actualMetadata = new List <Timestamp>();
client.FakeScheduler.Run(() =>
{
client.AddSuccessfulOperation("op", client.Clock.GetCurrentDateTimeUtc().AddSeconds(3), new StringValue {
Value = "result"
});
var initial = Operation <StringValue, Timestamp> .PollOnceFromName("op", client);
var settings = new PollSettings(Expiration.FromTimeout(TimeSpan.FromSeconds(5)), TimeSpan.FromSeconds(2));
// Second request at t=2, then another at t=4
var final = initial.PollUntilCompleted(settings, metadataCallback: actualMetadata.Add);
Assert.Equal("result", final.Result.Value);
Assert.Equal(4, client.RequestCount);
});
Assert.Equal(expectedMetadata, actualMetadata);
}
/// <summary> /// Polls the specified job within this client's project for completion. /// This method just creates a <see cref="JobReference"/> and delegates to <see cref="PollJobUntilCompleted(JobReference, GetJobOptions, PollSettings)"/>. /// </summary> /// <param name="jobId">The job ID. Must not be null.</param> /// <param name="options">The options for the operation. May be null, in which case defaults will be supplied.</param> /// <param name="pollSettings">The settings to control how often and long the job is fetched before timing out if it is still incomplete. May be null, in which case defaults will be supplied.</param> /// <returns>The completed job.</returns> public virtual BigQueryJob PollJobUntilCompleted(string jobId, GetJobOptions options = null, PollSettings pollSettings = null) => PollJobUntilCompleted(GetJobReference(jobId), options, pollSettings);
/// <summary> /// Asynchronously polls the specified job for completion. /// </summary> /// <param name="jobReference">A fully-qualified identifier for the job. Must not be null.</param> /// <param name="options">The options for the operation. May be null, in which case defaults will be supplied.</param> /// <param name="pollSettings">The settings to control how often and long the job is fetched before timing out if it is still incomplete. May be null, in which case defaults will be supplied.</param> /// <param name="cancellationToken">The token to monitor for cancellation requests.</param> /// <returns>A task representing the asynchronous operation. When complete, the result is /// the completed job.</returns> public virtual Task <BigQueryJob> PollJobUntilCompletedAsync(JobReference jobReference, GetJobOptions options = null, PollSettings pollSettings = null, CancellationToken cancellationToken = default(CancellationToken)) => throw new NotImplementedException();
/// <summary> /// Asynchronously polls the specified job for completion. /// This method just creates a <see cref="JobReference"/> and delegates to <see cref="PollJobUntilCompletedAsync(JobReference, GetJobOptions, PollSettings, CancellationToken)"/>. /// </summary> /// <param name="projectId">The project ID. Must not be null.</param> /// <param name="jobId">The job ID. Must not be null.</param> /// <param name="options">The options for the operation. May be null, in which case defaults will be supplied.</param> /// <param name="pollSettings">The settings to control how often and long the job is fetched before timing out if it is still incomplete. May be null, in which case defaults will be supplied.</param> /// <param name="cancellationToken">The token to monitor for cancellation requests.</param> /// <returns>A task representing the asynchronous operation. When complete, the result is /// the completed job.</returns> public virtual Task <BigQueryJob> PollJobUntilCompletedAsync(string projectId, string jobId, GetJobOptions options = null, PollSettings pollSettings = null, CancellationToken cancellationToken = default(CancellationToken)) => PollJobUntilCompletedAsync(GetJobReference(projectId, jobId), options, pollSettings, cancellationToken);
internal int PollRepeatedly(PollSettings pollSettings)
=> Polling.PollRepeatedly(Poll, IsPositive, Clock, Scheduler, pollSettings);
internal Task<int> PollRepeatedlyAsync(PollSettings pollSettings)
=> Polling.PollRepeatedlyAsync(PollAsync, IsPositive, Clock, Scheduler, pollSettings);
/// <summary> /// Polls the specified job for completion. /// </summary> /// <param name="jobReference">A fully-qualified identifier for the job. Must not be null.</param> /// <param name="options">The options for the operation. May be null, in which case defaults will be supplied.</param> /// <param name="pollSettings">The settings to control how often and long the job is fetched before timing out if it is still incomplete. May be null, in which case defaults will be supplied.</param> /// <returns>The completed job.</returns> public virtual BigQueryJob PollJobUntilCompleted(JobReference jobReference, GetJobOptions options = null, PollSettings pollSettings = null) => throw new NotImplementedException();