<PackageReference Include="Polly" Version="5.0.2-v5-0-alpha0001" />

RetrySyntaxAsync

public static class RetrySyntaxAsync
Fluent API for defining a Retry Policy.
using Polly.Retry; using Polly.Utilities; using System; using System.Collections.Generic; using System.Linq; using System.Threading; using System.Threading.Tasks; namespace Polly { public static class RetrySyntaxAsync { public static RetryPolicy RetryAsync(this PolicyBuilder policyBuilder) { return policyBuilder.RetryAsync(1); } public static RetryPolicy RetryAsync(this PolicyBuilder policyBuilder, int retryCount) { Action<Exception, int> onRetry = delegate { }; return policyBuilder.RetryAsync(retryCount, onRetry); } public static RetryPolicy RetryAsync(this PolicyBuilder policyBuilder, Action<Exception, int> onRetry) { return policyBuilder.RetryAsync(1, onRetry); } public static RetryPolicy RetryAsync(this PolicyBuilder policyBuilder, Func<Exception, int, Task> onRetryAsync) { return policyBuilder.RetryAsync(1, onRetryAsync); } public static RetryPolicy RetryAsync(this PolicyBuilder policyBuilder, int retryCount, Action<Exception, int> onRetry) { if (retryCount < 0) throw new ArgumentOutOfRangeException("retryCount", "Value must be greater than or equal to zero."); if (onRetry == null) throw new ArgumentNullException("onRetry"); return new RetryPolicy((Func<CancellationToken, Task> action, Context context, CancellationToken cancellationToken, bool continueOnCapturedContext) => RetryEngine.ImplementationAsync(async delegate(CancellationToken ct) { await action(ct).ConfigureAwait(continueOnCapturedContext); return EmptyStruct.Instance; }, cancellationToken, policyBuilder.ExceptionPredicates, PredicateHelper<EmptyStruct>.EmptyResultPredicates, () => new RetryPolicyStateWithCount<EmptyStruct>(retryCount, async delegate(DelegateResult<EmptyStruct> outcome, int i, Context ctx) { onRetry(outcome.Exception, i); }, context), continueOnCapturedContext), policyBuilder.ExceptionPredicates); } public static RetryPolicy RetryAsync(this PolicyBuilder policyBuilder, int retryCount, Func<Exception, int, Task> onRetryAsync) { if (retryCount < 0) throw new ArgumentOutOfRangeException("retryCount", "Value must be greater than or equal to zero."); if (onRetryAsync == null) throw new ArgumentNullException("onRetryAsync"); return new RetryPolicy((Func<CancellationToken, Task> action, Context context, CancellationToken cancellationToken, bool continueOnCapturedContext) => RetryEngine.ImplementationAsync(async delegate(CancellationToken ct) { await action(ct).ConfigureAwait(continueOnCapturedContext); return EmptyStruct.Instance; }, cancellationToken, policyBuilder.ExceptionPredicates, PredicateHelper<EmptyStruct>.EmptyResultPredicates, () => new RetryPolicyStateWithCount<EmptyStruct>(retryCount, (DelegateResult<EmptyStruct> outcome, int i, Context ctx) => onRetryAsync(outcome.Exception, i), context), continueOnCapturedContext), policyBuilder.ExceptionPredicates); } public static RetryPolicy RetryAsync(this PolicyBuilder policyBuilder, Action<Exception, int, Context> onRetry) { return policyBuilder.RetryAsync(1, onRetry); } public static RetryPolicy RetryAsync(this PolicyBuilder policyBuilder, Func<Exception, int, Context, Task> onRetryAsync) { return policyBuilder.RetryAsync(1, onRetryAsync); } public static RetryPolicy RetryAsync(this PolicyBuilder policyBuilder, int retryCount, Action<Exception, int, Context> onRetry) { if (retryCount < 0) throw new ArgumentOutOfRangeException("retryCount", "Value must be greater than or equal to zero."); if (onRetry == null) throw new ArgumentNullException("onRetry"); return new RetryPolicy((Func<CancellationToken, Task> action, Context context, CancellationToken cancellationToken, bool continueOnCapturedContext) => RetryEngine.ImplementationAsync(async delegate(CancellationToken ct) { await action(ct).ConfigureAwait(continueOnCapturedContext); return EmptyStruct.Instance; }, cancellationToken, policyBuilder.ExceptionPredicates, PredicateHelper<EmptyStruct>.EmptyResultPredicates, () => new RetryPolicyStateWithCount<EmptyStruct>(retryCount, async delegate(DelegateResult<EmptyStruct> outcome, int i, Context c) { onRetry(outcome.Exception, i, c); }, context), continueOnCapturedContext), policyBuilder.ExceptionPredicates); } public static RetryPolicy RetryAsync(this PolicyBuilder policyBuilder, int retryCount, Func<Exception, int, Context, Task> onRetryAsync) { if (retryCount < 0) throw new ArgumentOutOfRangeException("retryCount", "Value must be greater than or equal to zero."); if (onRetryAsync == null) throw new ArgumentNullException("onRetryAsync"); return new RetryPolicy((Func<CancellationToken, Task> action, Context context, CancellationToken cancellationToken, bool continueOnCapturedContext) => RetryEngine.ImplementationAsync(async delegate(CancellationToken ct) { await action(ct).ConfigureAwait(continueOnCapturedContext); return EmptyStruct.Instance; }, cancellationToken, policyBuilder.ExceptionPredicates, PredicateHelper<EmptyStruct>.EmptyResultPredicates, () => new RetryPolicyStateWithCount<EmptyStruct>(retryCount, (DelegateResult<EmptyStruct> outcome, int i, Context ctx) => onRetryAsync(outcome.Exception, i, ctx), context), continueOnCapturedContext), policyBuilder.ExceptionPredicates); } public static RetryPolicy RetryForeverAsync(this PolicyBuilder policyBuilder) { Action<Exception> onRetry = delegate { }; return policyBuilder.RetryForeverAsync(onRetry); } public static RetryPolicy RetryForeverAsync(this PolicyBuilder policyBuilder, Action<Exception> onRetry) { if (onRetry == null) throw new ArgumentNullException("onRetry"); return new RetryPolicy((Func<CancellationToken, Task> action, Context context, CancellationToken cancellationToken, bool continueOnCapturedContext) => RetryEngine.ImplementationAsync(async delegate(CancellationToken ct) { await action(ct).ConfigureAwait(continueOnCapturedContext); return EmptyStruct.Instance; }, cancellationToken, policyBuilder.ExceptionPredicates, PredicateHelper<EmptyStruct>.EmptyResultPredicates, () => new RetryPolicyState<EmptyStruct>(async delegate(DelegateResult<EmptyStruct> outcome, Context ctx) { onRetry(outcome.Exception); }, context), continueOnCapturedContext), policyBuilder.ExceptionPredicates); } public static RetryPolicy RetryForeverAsync(this PolicyBuilder policyBuilder, Func<Exception, Task> onRetryAsync) { if (onRetryAsync == null) throw new ArgumentNullException("onRetryAsync"); return new RetryPolicy((Func<CancellationToken, Task> action, Context context, CancellationToken cancellationToken, bool continueOnCapturedContext) => RetryEngine.ImplementationAsync(async delegate(CancellationToken ct) { await action(ct).ConfigureAwait(continueOnCapturedContext); return EmptyStruct.Instance; }, cancellationToken, policyBuilder.ExceptionPredicates, PredicateHelper<EmptyStruct>.EmptyResultPredicates, () => new RetryPolicyState<EmptyStruct>((DelegateResult<EmptyStruct> outcome, Context ctx) => onRetryAsync(outcome.Exception), context), continueOnCapturedContext), policyBuilder.ExceptionPredicates); } public static RetryPolicy RetryForeverAsync(this PolicyBuilder policyBuilder, Action<Exception, Context> onRetry) { if (onRetry == null) throw new ArgumentNullException("onRetry"); return new RetryPolicy((Func<CancellationToken, Task> action, Context context, CancellationToken cancellationToken, bool continueOnCapturedContext) => RetryEngine.ImplementationAsync(async delegate(CancellationToken ct) { await action(ct).ConfigureAwait(continueOnCapturedContext); return EmptyStruct.Instance; }, cancellationToken, policyBuilder.ExceptionPredicates, PredicateHelper<EmptyStruct>.EmptyResultPredicates, () => new RetryPolicyState<EmptyStruct>(async delegate(DelegateResult<EmptyStruct> outcome, Context c) { onRetry(outcome.Exception, c); }, context), continueOnCapturedContext), policyBuilder.ExceptionPredicates); } public static RetryPolicy RetryForeverAsync(this PolicyBuilder policyBuilder, Func<Exception, Context, Task> onRetryAsync) { if (onRetryAsync == null) throw new ArgumentNullException("onRetryAsync"); return new RetryPolicy((Func<CancellationToken, Task> action, Context context, CancellationToken cancellationToken, bool continueOnCapturedContext) => RetryEngine.ImplementationAsync(async delegate(CancellationToken ct) { await action(ct).ConfigureAwait(continueOnCapturedContext); return EmptyStruct.Instance; }, cancellationToken, policyBuilder.ExceptionPredicates, PredicateHelper<EmptyStruct>.EmptyResultPredicates, () => new RetryPolicyState<EmptyStruct>((DelegateResult<EmptyStruct> outcome, Context ctx) => onRetryAsync(outcome.Exception, ctx), context), continueOnCapturedContext), policyBuilder.ExceptionPredicates); } public static RetryPolicy WaitAndRetryAsync(this PolicyBuilder policyBuilder, int retryCount, Func<int, TimeSpan> sleepDurationProvider) { Action<Exception, TimeSpan> onRetry = delegate { }; return policyBuilder.WaitAndRetryAsync(retryCount, sleepDurationProvider, onRetry); } public static RetryPolicy WaitAndRetryAsync(this PolicyBuilder policyBuilder, int retryCount, Func<int, TimeSpan> sleepDurationProvider, Action<Exception, TimeSpan> onRetry) { if (retryCount < 0) throw new ArgumentOutOfRangeException("retryCount", "Value must be greater than or equal to zero."); if (sleepDurationProvider == null) throw new ArgumentNullException("sleepDurationProvider"); if (onRetry == null) throw new ArgumentNullException("onRetry"); IEnumerable<TimeSpan> sleepDurations = Enumerable.Range(1, retryCount).Select(sleepDurationProvider); return new RetryPolicy((Func<CancellationToken, Task> action, Context context, CancellationToken cancellationToken, bool continueOnCapturedContext) => RetryEngine.ImplementationAsync(async delegate(CancellationToken ct) { await action(ct).ConfigureAwait(continueOnCapturedContext); return EmptyStruct.Instance; }, cancellationToken, policyBuilder.ExceptionPredicates, PredicateHelper<EmptyStruct>.EmptyResultPredicates, () => new RetryPolicyStateWithSleep<EmptyStruct>(sleepDurations, async delegate(DelegateResult<EmptyStruct> outcome, TimeSpan timespan, Context ctx) { onRetry(outcome.Exception, timespan); }, context), continueOnCapturedContext), policyBuilder.ExceptionPredicates); } public static RetryPolicy WaitAndRetryAsync(this PolicyBuilder policyBuilder, int retryCount, Func<int, TimeSpan> sleepDurationProvider, Func<Exception, TimeSpan, Task> onRetryAsync) { if (retryCount < 0) throw new ArgumentOutOfRangeException("retryCount", "Value must be greater than or equal to zero."); if (sleepDurationProvider == null) throw new ArgumentNullException("sleepDurationProvider"); if (onRetryAsync == null) throw new ArgumentNullException("onRetryAsync"); IEnumerable<TimeSpan> sleepDurations = Enumerable.Range(1, retryCount).Select(sleepDurationProvider); return new RetryPolicy((Func<CancellationToken, Task> action, Context context, CancellationToken cancellationToken, bool continueOnCapturedContext) => RetryEngine.ImplementationAsync(async delegate(CancellationToken ct) { await action(ct).ConfigureAwait(continueOnCapturedContext); return EmptyStruct.Instance; }, cancellationToken, policyBuilder.ExceptionPredicates, PredicateHelper<EmptyStruct>.EmptyResultPredicates, () => new RetryPolicyStateWithSleep<EmptyStruct>(sleepDurations, (DelegateResult<EmptyStruct> outcome, TimeSpan timespan, Context ctx) => onRetryAsync(outcome.Exception, timespan), context), continueOnCapturedContext), policyBuilder.ExceptionPredicates); } public static RetryPolicy WaitAndRetryAsync(this PolicyBuilder policyBuilder, int retryCount, Func<int, TimeSpan> sleepDurationProvider, Action<Exception, TimeSpan, Context> onRetry) { if (retryCount < 0) throw new ArgumentOutOfRangeException("retryCount", "Value must be greater than or equal to zero."); if (sleepDurationProvider == null) throw new ArgumentNullException("sleepDurationProvider"); if (onRetry == null) throw new ArgumentNullException("onRetry"); IEnumerable<TimeSpan> sleepDurations = Enumerable.Range(1, retryCount).Select(sleepDurationProvider); return new RetryPolicy((Func<CancellationToken, Task> action, Context context, CancellationToken cancellationToken, bool continueOnCapturedContext) => RetryEngine.ImplementationAsync(async delegate(CancellationToken ct) { await action(ct).ConfigureAwait(continueOnCapturedContext); return EmptyStruct.Instance; }, cancellationToken, policyBuilder.ExceptionPredicates, PredicateHelper<EmptyStruct>.EmptyResultPredicates, () => new RetryPolicyStateWithSleep<EmptyStruct>(sleepDurations, async delegate(DelegateResult<EmptyStruct> outcome, TimeSpan timespan, Context ctx) { onRetry(outcome.Exception, timespan, ctx); }, context), continueOnCapturedContext), policyBuilder.ExceptionPredicates); } public static RetryPolicy WaitAndRetryAsync(this PolicyBuilder policyBuilder, int retryCount, Func<int, TimeSpan> sleepDurationProvider, Action<Exception, TimeSpan, int, Context> onRetry) { if (retryCount < 0) throw new ArgumentOutOfRangeException("retryCount", "Value must be greater than or equal to zero."); if (sleepDurationProvider == null) throw new ArgumentNullException("sleepDurationProvider"); if (onRetry == null) throw new ArgumentNullException("onRetry"); IEnumerable<TimeSpan> sleepDurations = Enumerable.Range(1, retryCount).Select(sleepDurationProvider); return new RetryPolicy((Func<CancellationToken, Task> action, Context context, CancellationToken cancellationToken, bool continueOnCapturedContext) => RetryEngine.ImplementationAsync(async delegate(CancellationToken ct) { await action(ct).ConfigureAwait(continueOnCapturedContext); return EmptyStruct.Instance; }, cancellationToken, policyBuilder.ExceptionPredicates, PredicateHelper<EmptyStruct>.EmptyResultPredicates, () => new RetryPolicyStateWithSleep<EmptyStruct>(sleepDurations, async delegate(DelegateResult<EmptyStruct> outcome, TimeSpan timespan, int i, Context ctx) { onRetry(outcome.Exception, timespan, i, ctx); }, context), continueOnCapturedContext), policyBuilder.ExceptionPredicates); } public static RetryPolicy WaitAndRetryAsync(this PolicyBuilder policyBuilder, int retryCount, Func<int, TimeSpan> sleepDurationProvider, Func<Exception, TimeSpan, Context, Task> onRetryAsync) { if (retryCount < 0) throw new ArgumentOutOfRangeException("retryCount", "Value must be greater than or equal to zero."); if (sleepDurationProvider == null) throw new ArgumentNullException("sleepDurationProvider"); if (onRetryAsync == null) throw new ArgumentNullException("onRetryAsync"); IEnumerable<TimeSpan> sleepDurations = Enumerable.Range(1, retryCount).Select(sleepDurationProvider); return new RetryPolicy((Func<CancellationToken, Task> action, Context context, CancellationToken cancellationToken, bool continueOnCapturedContext) => RetryEngine.ImplementationAsync(async delegate(CancellationToken ct) { await action(ct).ConfigureAwait(continueOnCapturedContext); return EmptyStruct.Instance; }, cancellationToken, policyBuilder.ExceptionPredicates, PredicateHelper<EmptyStruct>.EmptyResultPredicates, () => new RetryPolicyStateWithSleep<EmptyStruct>(sleepDurations, (DelegateResult<EmptyStruct> outcome, TimeSpan timespan, Context ctx) => onRetryAsync(outcome.Exception, timespan, ctx), context), continueOnCapturedContext), policyBuilder.ExceptionPredicates); } public static RetryPolicy WaitAndRetryAsync(this PolicyBuilder policyBuilder, int retryCount, Func<int, TimeSpan> sleepDurationProvider, Func<Exception, TimeSpan, int, Context, Task> onRetryAsync) { if (retryCount < 0) throw new ArgumentOutOfRangeException("retryCount", "Value must be greater than or equal to zero."); if (sleepDurationProvider == null) throw new ArgumentNullException("sleepDurationProvider"); if (onRetryAsync == null) throw new ArgumentNullException("onRetryAsync"); IEnumerable<TimeSpan> sleepDurations = Enumerable.Range(1, retryCount).Select(sleepDurationProvider); return new RetryPolicy((Func<CancellationToken, Task> action, Context context, CancellationToken cancellationToken, bool continueOnCapturedContext) => RetryEngine.ImplementationAsync(async delegate(CancellationToken ct) { await action(ct).ConfigureAwait(continueOnCapturedContext); return EmptyStruct.Instance; }, cancellationToken, policyBuilder.ExceptionPredicates, PredicateHelper<EmptyStruct>.EmptyResultPredicates, () => new RetryPolicyStateWithSleep<EmptyStruct>(sleepDurations, (DelegateResult<EmptyStruct> outcome, TimeSpan timespan, int i, Context ctx) => onRetryAsync(outcome.Exception, timespan, i, ctx), context), continueOnCapturedContext), policyBuilder.ExceptionPredicates); } public static RetryPolicy WaitAndRetryAsync(this PolicyBuilder policyBuilder, IEnumerable<TimeSpan> sleepDurations) { Action<Exception, TimeSpan> onRetry = delegate { }; return policyBuilder.WaitAndRetryAsync(sleepDurations, onRetry); } public static RetryPolicy WaitAndRetryAsync(this PolicyBuilder policyBuilder, IEnumerable<TimeSpan> sleepDurations, Action<Exception, TimeSpan> onRetry) { if (sleepDurations == null) throw new ArgumentNullException("sleepDurations"); if (onRetry == null) throw new ArgumentNullException("onRetry"); return new RetryPolicy((Func<CancellationToken, Task> action, Context context, CancellationToken cancellationToken, bool continueOnCapturedContext) => RetryEngine.ImplementationAsync(async delegate(CancellationToken ct) { await action(ct).ConfigureAwait(continueOnCapturedContext); return EmptyStruct.Instance; }, cancellationToken, policyBuilder.ExceptionPredicates, PredicateHelper<EmptyStruct>.EmptyResultPredicates, () => new RetryPolicyStateWithSleep<EmptyStruct>(sleepDurations, async delegate(DelegateResult<EmptyStruct> outcome, TimeSpan timespan, Context ctx) { onRetry(outcome.Exception, timespan); }, context), continueOnCapturedContext), policyBuilder.ExceptionPredicates); } public static RetryPolicy WaitAndRetryAsync(this PolicyBuilder policyBuilder, IEnumerable<TimeSpan> sleepDurations, Func<Exception, TimeSpan, Task> onRetryAsync) { if (sleepDurations == null) throw new ArgumentNullException("sleepDurations"); if (onRetryAsync == null) throw new ArgumentNullException("onRetryAsync"); return new RetryPolicy((Func<CancellationToken, Task> action, Context context, CancellationToken cancellationToken, bool continueOnCapturedContext) => RetryEngine.ImplementationAsync(async delegate(CancellationToken ct) { await action(ct).ConfigureAwait(continueOnCapturedContext); return EmptyStruct.Instance; }, cancellationToken, policyBuilder.ExceptionPredicates, PredicateHelper<EmptyStruct>.EmptyResultPredicates, () => new RetryPolicyStateWithSleep<EmptyStruct>(sleepDurations, (DelegateResult<EmptyStruct> outcome, TimeSpan timespan, Context ctx) => onRetryAsync(outcome.Exception, timespan), context), continueOnCapturedContext), policyBuilder.ExceptionPredicates); } public static RetryPolicy WaitAndRetryAsync(this PolicyBuilder policyBuilder, IEnumerable<TimeSpan> sleepDurations, Action<Exception, TimeSpan, Context> onRetry) { if (sleepDurations == null) throw new ArgumentNullException("sleepDurations"); if (onRetry == null) throw new ArgumentNullException("onRetry"); return new RetryPolicy((Func<CancellationToken, Task> action, Context context, CancellationToken cancellationToken, bool continueOnCapturedContext) => RetryEngine.ImplementationAsync(async delegate(CancellationToken ct) { await action(ct).ConfigureAwait(continueOnCapturedContext); return EmptyStruct.Instance; }, cancellationToken, policyBuilder.ExceptionPredicates, PredicateHelper<EmptyStruct>.EmptyResultPredicates, () => new RetryPolicyStateWithSleep<EmptyStruct>(sleepDurations, async delegate(DelegateResult<EmptyStruct> outcome, TimeSpan timespan, Context ctx) { onRetry(outcome.Exception, timespan, ctx); }, context), continueOnCapturedContext), policyBuilder.ExceptionPredicates); } public static RetryPolicy WaitAndRetryAsync(this PolicyBuilder policyBuilder, IEnumerable<TimeSpan> sleepDurations, Action<Exception, TimeSpan, int, Context> onRetry) { if (sleepDurations == null) throw new ArgumentNullException("sleepDurations"); if (onRetry == null) throw new ArgumentNullException("onRetry"); return new RetryPolicy((Func<CancellationToken, Task> action, Context context, CancellationToken cancellationToken, bool continueOnCapturedContext) => RetryEngine.ImplementationAsync(async delegate(CancellationToken ct) { await action(ct).ConfigureAwait(continueOnCapturedContext); return EmptyStruct.Instance; }, cancellationToken, policyBuilder.ExceptionPredicates, PredicateHelper<EmptyStruct>.EmptyResultPredicates, () => new RetryPolicyStateWithSleep<EmptyStruct>(sleepDurations, async delegate(DelegateResult<EmptyStruct> outcome, TimeSpan timespan, int i, Context ctx) { onRetry(outcome.Exception, timespan, i, ctx); }, context), continueOnCapturedContext), policyBuilder.ExceptionPredicates); } public static RetryPolicy WaitAndRetryAsync(this PolicyBuilder policyBuilder, IEnumerable<TimeSpan> sleepDurations, Func<Exception, TimeSpan, Context, Task> onRetryAsync) { if (sleepDurations == null) throw new ArgumentNullException("sleepDurations"); if (onRetryAsync == null) throw new ArgumentNullException("onRetryAsync"); return new RetryPolicy((Func<CancellationToken, Task> action, Context context, CancellationToken cancellationToken, bool continueOnCapturedContext) => RetryEngine.ImplementationAsync(async delegate(CancellationToken ct) { await action(ct).ConfigureAwait(continueOnCapturedContext); return EmptyStruct.Instance; }, cancellationToken, policyBuilder.ExceptionPredicates, PredicateHelper<EmptyStruct>.EmptyResultPredicates, () => new RetryPolicyStateWithSleep<EmptyStruct>(sleepDurations, (DelegateResult<EmptyStruct> outcome, TimeSpan timespan, Context ctx) => onRetryAsync(outcome.Exception, timespan, ctx), context), continueOnCapturedContext), policyBuilder.ExceptionPredicates); } public static RetryPolicy WaitAndRetryAsync(this PolicyBuilder policyBuilder, IEnumerable<TimeSpan> sleepDurations, Func<Exception, TimeSpan, int, Context, Task> onRetryAsync) { if (sleepDurations == null) throw new ArgumentNullException("sleepDurations"); if (onRetryAsync == null) throw new ArgumentNullException("onRetryAsync"); return new RetryPolicy((Func<CancellationToken, Task> action, Context context, CancellationToken cancellationToken, bool continueOnCapturedContext) => RetryEngine.ImplementationAsync(async delegate(CancellationToken ct) { await action(ct).ConfigureAwait(continueOnCapturedContext); return EmptyStruct.Instance; }, cancellationToken, policyBuilder.ExceptionPredicates, PredicateHelper<EmptyStruct>.EmptyResultPredicates, () => new RetryPolicyStateWithSleep<EmptyStruct>(sleepDurations, (DelegateResult<EmptyStruct> outcome, TimeSpan timespan, int i, Context ctx) => onRetryAsync(outcome.Exception, timespan, i, ctx), context), continueOnCapturedContext), policyBuilder.ExceptionPredicates); } public static RetryPolicy WaitAndRetryForeverAsync(this PolicyBuilder policyBuilder, Func<int, TimeSpan> sleepDurationProvider) { if (sleepDurationProvider == null) throw new ArgumentNullException("sleepDurationProvider"); Action<Exception, TimeSpan> onRetry = delegate { }; return policyBuilder.WaitAndRetryForeverAsync(sleepDurationProvider, onRetry); } public static RetryPolicy WaitAndRetryForeverAsync(this PolicyBuilder policyBuilder, Func<int, TimeSpan> sleepDurationProvider, Action<Exception, TimeSpan> onRetry) { if (sleepDurationProvider == null) throw new ArgumentNullException("sleepDurationProvider"); if (onRetry == null) throw new ArgumentNullException("onRetry"); return new RetryPolicy((Func<CancellationToken, Task> action, Context context, CancellationToken cancellationToken, bool continueOnCapturedContext) => RetryEngine.ImplementationAsync(async delegate(CancellationToken ct) { await action(ct).ConfigureAwait(continueOnCapturedContext); return EmptyStruct.Instance; }, cancellationToken, policyBuilder.ExceptionPredicates, PredicateHelper<EmptyStruct>.EmptyResultPredicates, () => new RetryPolicyStateWithSleepDurationProvider<EmptyStruct>(sleepDurationProvider, async delegate(DelegateResult<EmptyStruct> outcome, TimeSpan timespan, Context ctx) { onRetry(outcome.Exception, timespan); }, context), continueOnCapturedContext), policyBuilder.ExceptionPredicates); } public static RetryPolicy WaitAndRetryForeverAsync(this PolicyBuilder policyBuilder, Func<int, TimeSpan> sleepDurationProvider, Func<Exception, TimeSpan, Task> onRetryAsync) { if (sleepDurationProvider == null) throw new ArgumentNullException("sleepDurationProvider"); if (onRetryAsync == null) throw new ArgumentNullException("onRetryAsync"); return new RetryPolicy((Func<CancellationToken, Task> action, Context context, CancellationToken cancellationToken, bool continueOnCapturedContext) => RetryEngine.ImplementationAsync(async delegate(CancellationToken ct) { await action(ct).ConfigureAwait(continueOnCapturedContext); return EmptyStruct.Instance; }, cancellationToken, policyBuilder.ExceptionPredicates, PredicateHelper<EmptyStruct>.EmptyResultPredicates, () => new RetryPolicyStateWithSleepDurationProvider<EmptyStruct>(sleepDurationProvider, (DelegateResult<EmptyStruct> outcome, TimeSpan timespan, Context ctx) => onRetryAsync(outcome.Exception, timespan), context), continueOnCapturedContext), policyBuilder.ExceptionPredicates); } public static RetryPolicy WaitAndRetryForeverAsync(this PolicyBuilder policyBuilder, Func<int, TimeSpan> sleepDurationProvider, Action<Exception, TimeSpan, Context> onRetry) { if (sleepDurationProvider == null) throw new ArgumentNullException("sleepDurationProvider"); if (onRetry == null) throw new ArgumentNullException("onRetry"); return new RetryPolicy((Func<CancellationToken, Task> action, Context context, CancellationToken cancellationToken, bool continueOnCapturedContext) => RetryEngine.ImplementationAsync(async delegate(CancellationToken ct) { await action(ct).ConfigureAwait(continueOnCapturedContext); return EmptyStruct.Instance; }, cancellationToken, policyBuilder.ExceptionPredicates, PredicateHelper<EmptyStruct>.EmptyResultPredicates, () => new RetryPolicyStateWithSleepDurationProvider<EmptyStruct>(sleepDurationProvider, async delegate(DelegateResult<EmptyStruct> outcome, TimeSpan timespan, Context ctx) { onRetry(outcome.Exception, timespan, ctx); }, context), continueOnCapturedContext), policyBuilder.ExceptionPredicates); } public static RetryPolicy WaitAndRetryForeverAsync(this PolicyBuilder policyBuilder, Func<int, TimeSpan> sleepDurationProvider, Func<Exception, TimeSpan, Context, Task> onRetryAsync) { if (sleepDurationProvider == null) throw new ArgumentNullException("sleepDurationProvider"); if (onRetryAsync == null) throw new ArgumentNullException("onRetryAsync"); return new RetryPolicy((Func<CancellationToken, Task> action, Context context, CancellationToken cancellationToken, bool continueOnCapturedContext) => RetryEngine.ImplementationAsync(async delegate(CancellationToken ct) { await action(ct).ConfigureAwait(continueOnCapturedContext); return EmptyStruct.Instance; }, cancellationToken, policyBuilder.ExceptionPredicates, PredicateHelper<EmptyStruct>.EmptyResultPredicates, () => new RetryPolicyStateWithSleepDurationProvider<EmptyStruct>(sleepDurationProvider, (DelegateResult<EmptyStruct> outcome, TimeSpan timespan, Context ctx) => onRetryAsync(outcome.Exception, timespan, ctx), context), continueOnCapturedContext), policyBuilder.ExceptionPredicates); } } }