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    Class Polling (4.0.0) 

     public static class Polling

    Helper methods for polling scenarios.

    Inheritance

    Object > Polling

    Namespace

    Google.Api.Gax

    Assembly

    Google.Api.Gax.dll

    Methods

    PollRepeatedly<TResponse>(Func<Nullable<DateTime>, TResponse>, Predicate<TResponse>, IClock, IScheduler, PollSettings, CancellationToken)

     public static TResponse PollRepeatedly<TResponse>(Func<DateTime?, TResponse> pollAction, Predicate<TResponse> completionPredicate, IClock clock, IScheduler scheduler, PollSettings pollSettings, CancellationToken cancellationToken)

    Repeatedly calls the specified polling action, delaying between calls, until a given condition is met in the response.

    Parameters
    Name
    Description
    pollAction
    Func < Nullable < DateTime >, TResponse>

    The poll action, typically performing an RPC. The value passed to the action is the overall deadline, so that the RPC settings can be adjusted accordingly. A null value indicates no deadline.

    completionPredicate
    Predicate <TResponse>

    The test for whether to return the response ( true ) or continue polling ( false ). Must not be null.

    clock
    IClock

    The clock to use for determining deadlines. Must not be null.

    scheduler
    IScheduler

    The scheduler to use for delaying between calls. Must not be null.

    pollSettings
    PollSettings

    The poll settings, controlling timeouts, call settings and delays.

    cancellationToken
    CancellationToken

    The cancellation token used to cancel delays, if any.

    Returns
    Type
    Description
    TResponse

    The completed response.

    Type Parameter
    Name
    Description
    TResponse

    The response type.

    Exceptions
    Type
    Description
    TimeoutException

    The timeout specified in the poll settings expired.

    PollRepeatedlyAsync<TResponse>(Func<Nullable<DateTime>, Task<TResponse>>, Predicate<TResponse>, IClock, IScheduler, PollSettings, CancellationToken)

     public static async Task<TResponse> PollRepeatedlyAsync<TResponse>(Func<DateTime?, Task<TResponse>> pollAction, Predicate<TResponse> completionPredicate, IClock clock, IScheduler scheduler, PollSettings pollSettings, CancellationToken cancellationToken)

    Asynchronously repeatedly calls the specified polling action, delaying between calls, until a given condition is met in the response.

    Parameters
    Name
    Description
    pollAction
    Func < Nullable < DateTime >, Task <TResponse>>

    The poll action, typically performing an RPC. The value passed to the action is the overall deadline, so that the RPC settings can be adjusted accordingly. A null value indicates no deadline.

    completionPredicate
    Predicate <TResponse>

    The test for whether to return the response ( true ) or continue polling ( false ). Must not be null.

    clock
    IClock

    The clock to use for determining deadlines. Must not be null.

    scheduler
    IScheduler

    The scheduler to use for delaying between calls. Must not be null.

    pollSettings
    PollSettings

    The poll settings, controlling timeouts, call settings and delays.

    cancellationToken
    CancellationToken

    The cancellation token used to cancel delays, if any.

    Returns
    Type
    Description
    Task <TResponse>

    A task representing the asynchronous operation. The result of the task will be the completed response.

    Type Parameter
    Name
    Description
    TResponse

    The response type.
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