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    • Neon
      • Build
    • Neon.Blazor
      • BlazorHelper
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    • Neon.BuildInfo
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    • Neon.CSharp
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    • Neon.Cryptography
      • AesCipher
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    • Neon.Deployment
      • AwsCli
      • DeploymentException
      • DeploymentHelper
      • DownloadManifest
      • DownloadPart
      • DownloadProgressDelegate
      • DownloadProgressType
      • GitHub
      • GitHubActionsApi
      • GitHubPackage
      • GitHubPackageApi
      • GitHubPackageType
      • GitHubPackageVersion
      • GitHubPackageVisibility
      • GitHubReleaseApi
      • GitHubRepoPath
      • GitHubTagApi
      • IProfileClient
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      • MaintainerProfile
      • NotifyClient
      • OnePassword
      • OnePasswordException
      • ProfileException
      • ProfileHandlerResult
      • ProfileRequest
      • ProfileResponse
      • ProfileServer
      • ProfileStatus
      • XenServer
    • Neon.Deployment.CodeSigning
      • AzureProfile
      • CodeSigner
      • UsbTokenProfile
    • Neon.Diagnostics
      • AssertException
      • ConfigExtensions
      • ConsoleJsonLogExporter
      • ConsoleJsonLogExporterOptions
      • ConsoleTextLogExporter
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      • FileLogExporter
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      • LogAttributeNames
      • LogAttributes
      • LogEvent
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      • NullLogger
      • TelemetryHub
      • TelemetrySpanEventNames
      • TelemetrySpanExtensions
    • Neon.Docker
      • DockerClient
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      • DockerNetworkContainer
      • DockerNetworkIpam
      • DockerNode
      • DockerNodeManagerStatus
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      • DockerVolume
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      • ServiceBindOptions
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      • ServiceContainerSpec
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      • ServicePlatform
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      • ServiceVersion
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      • VolumeListResponse
    • Neon.GitHub
      • GitExtensions
      • GitHubCredentials
      • GitHubRepo
      • LocalRepoApi
      • NoLocalRepositoryException
      • RemoteRepoApi
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      • RemoteRepoIssueCommentApi
      • RemoteRepoPath
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    • Neon.HyperV
      • HyperVClient
      • HyperVDriverType
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      • NetAdapter
      • VirtualDrive
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      • VirtualMachine
      • VirtualMachineNetworkAdapter
      • VirtualMachineState
      • VirtualNat
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      • VirtualSwitchType
    • Neon.IO
      • BlockStream
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      • IStaticDirectory
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      • LinuxPath
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      • StaticFileBase
      • SubStream
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    • Neon.JsonConverters
      • JsonDateTimeConverter
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    • Neon.ModelGen
      • ActionResult<T>
      • ApiVersion
      • ApiVersionAttribute
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      • ModelGenerator
      • ModelGeneratorOutput
      • ModelGeneratorSettings
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      • PassAs
      • PersistableAttribute
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      • RouteAttribute
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      • TargetAttribute
      • UxFrameworks
    • Neon.Net
      • HttpApiException
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      • JsonClient
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      • LocalHostSection
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      • NetworkConfiguration
      • NetworkException
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    • Neon.Postgres
      • ConnectionExtensions
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      • PreparedCommand
      • ReaderAsyncEnumerator
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      • SchemaManagerException
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    • Neon.Retry
      • ExponentialRetryPolicy
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      • TransientDetector
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    • Neon.Roslyn
      • DisplayFormat
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      • MetadataLoadContext
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      • SharedUtilities
    • Neon.Roslyn.Xunit
      • AdditionalSourceText
      • CompilationOptions
      • CompilationOptionsProvider
      • TestCompilation
      • TestCompilationAssertions
      • TestCompilationBuilder
      • TestCompilationBuilderExtensions
      • TestCompilationExtensions
    • Neon.SSH
      • CommandBundle
      • CommandFile
      • CommandResponse
      • HostFolders
      • IBashCommandFormatter
      • ILinuxSshProxy
      • LinuxDiskInfo
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      • NamespaceDoc
      • RemoteCommandException
      • RunOptions
      • SshCredentials
      • SshExtensions
      • SshProxyException
    • Neon.Service
      • LogMetricsProcessor
      • MetricsMode
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      • NeonService
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      • NeonServiceStatus
      • OtelConfigExtensions
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      • ProcessTerminator
      • ServiceApiContact
      • ServiceApiInfo
      • ServiceApiLicense
      • ServiceDependencies
      • ServiceDescription
      • ServiceEndpoint
      • ServiceEndpointProtocol
      • ServiceEndpoints
      • ServiceMap
    • Neon.SignalR
      • DependencyInjectionExtensions
      • DnsCache
      • GroupAction
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      • IDnsCache
      • Invocation
      • NatsHubLifetimeManager<THub>
      • ProxyConfig
      • ServiceCollectionExtensions
      • ServiceDiscovey
      • SignalrProxyMiddleware
      • SignalrProxyMiddlewareExtensions
      • TracerProviderBuilderExtensions
    • Neon.Tailwind
      • ClickOffEventHandler
      • ComponentEventArgs<TSender>
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      • HeadlessButton
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      • HeadlessDialogPanel
      • HeadlessDisclosure
      • HeadlessDisclosureButton
      • HeadlessDisclosurePanel
      • HeadlessListboxButton<TValue>
      • HeadlessListboxLabel<TValue>
      • HeadlessListboxOption<TValue>
      • HeadlessListboxOptions<TValue>
      • HeadlessListbox<TValue>
      • HeadlessMenu
      • HeadlessMenuButton
      • HeadlessMenuItem
      • HeadlessMenuItems
      • HeadlessSwitch
      • HeadlessSwitchGroup
      • HeadlessSwitchLabel
      • IPortalBinder
      • KeyDownEventHandler
      • KeyboardKey
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      • ListboxState
      • MenuFocus
      • MenuState
      • Portal
      • PortalBinder
      • PortalContent
      • SearchAssistant
      • TailwindExtensions
      • Transition
      • TransitionGroup
      • TransitionState
    • Neon.Tasks
      • Async
      • AsyncAutoResetEvent
      • AsyncManualResetEvent
      • AsyncMutex
      • AsyncPeriodicTask
      • AsyncReaderWriterLock
      • AsyncReentrantMutex
      • AsyncTimer
      • IAsyncFuture
      • IAsyncFuture<T>
      • NonDisposableTask
      • NonDisposableTask<T>
      • SyncContext
      • SyncContextMode
    • Neon.Temporal
      • ActivityHelper
      • ActivityLogEnricher
      • TemporalEnricherTagNames
      • WorkflowLogEnricher
    • Neon.Time
      • GatedTimer
      • GoDuration
      • PolledTimer
      • RecurringTimer
      • RecurringTimerType
      • SysTime
      • TimeOfDay
    • Neon.WSL
      • Wsl2Proxy
    • Neon.Web
      • AesProtector
      • DataProtectionExtensions
      • NeonController
      • NeonControllerBase
      • RoundTripJsonInputFormatter
      • RoundTripJsonOutputFormatter
      • TracerProviderBuilderExtensions
      • WebHelper
    • Neon.WinTTY
      • ConsoleTTY
    • Neon.Windows
      • MEMORYSTATUSEX
      • PowerShellException
      • Win32
    • Neon.XenServer
      • IXenClient
      • XenClient
      • XenClient.MachineOperations
      • XenClient.StorageOperations
      • XenClient.TemplateOperations
      • XenException
      • XenHostInfo
      • XenObject
      • XenResponse
      • XenStorageRepository
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      • XenTemplate
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    • Neon.Xunit
      • AnsiblePlayResults
      • AnsiblePlayer
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      • AspNetFixture
      • BasicFixture
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      • CollectionComparer<T>
      • ComposedFixture
      • ContainerFixture
      • ContainerLimits
      • DockerComposeFixture
      • DockerFixture
      • DockerFixture.ConfigInfo
      • DockerFixture.ContainerInfo
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      • DockerFixture.ServiceInfo
      • DockerFixture.StackDefinition
      • DockerFixture.StackInfo
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      • EnvironmentFixture
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      • TestHelper
      • TestHttpClient
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      • TestTrait
      • XunitExtensions
    • Neon.Xunit.YugaByte
      • YugaByteFixture
    • Neon.YugaByte
      • YugaByteHelper

    Class AsyncTimer

    Implements a timer that runs on a background Task.

    Inheritance
    object
    AsyncTimer
    Namespace: Neon.Tasks
    Assembly: Neon.Common.dll
    Syntax
    public class AsyncTimer
    Remarks

    This class is pretty easy to use. Simply use the AsyncTimer(Func<Task>) constructor to create an instance, passing the async callback to be called when the timer fires and then call Start(TimeSpan, bool, Func<Task>) to start the timer, passing the timer interval.

    Start(TimeSpan, bool, Func<Task>) starts a background task that fires the callback at the interval specified. You can call Start(TimeSpan, bool, Func<Task>) again to restart the timer with a different interval. The IsRunning property can be used to determine whether a timer is running or not.

    Call Stop() to stop a timer. Start(TimeSpan, bool, Func<Task>) may be called again to restart the timer.

    note

    This class implements IDisposable so this should be called for every instance created or Stop() should be called explicitly.

    note

    This class handles any exceptions thrown by the callback by logging them to the default TelemetryHub and then continuing on with firing ticks. You'll need to add a try/catch to your callback to do your own exception handling.

    Constructors

    AsyncTimer(Func<Task>)

    Constructor.

    Declaration
    public AsyncTimer(Func<Task> callback = null)
    Parameters
    Type Name Description
    Func<Task> callback

    Optionally specifies the callback.

    Properties

    Interval

    Returns the timer interval.

    Declaration
    public TimeSpan Interval { get; }
    Property Value
    Type Description
    TimeSpan

    IsRunning

    Indicates whether the timer is currently running.

    note

    This returns Zero until Start(TimeSpan, bool, Func<Task>) is called for the first time.

    Declaration
    public bool IsRunning { get; }
    Property Value
    Type Description
    bool

    Methods

    Dispose()

    Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.

    Declaration
    public void Dispose()

    Dispose(bool)

    Releases any important resources associated with the instance.

    Declaration
    protected void Dispose(bool disposing)
    Parameters
    Type Name Description
    bool disposing

    Pass true if the instance is being disposed as opposed to being finalized.

    ~AsyncTimer()

    Finalizer.

    Declaration
    protected ~AsyncTimer()

    Start(TimeSpan, bool, Func<Task>)

    Starts or restarts the timer.

    The interval must be specified as a positive interval when the timer is first started but this is optional thereafter, defaulting to value from the original Start(TimeSpan, bool, Func<Task>) call.

    Declaration
    public void Start(TimeSpan interval = default, bool delayFirstTick = false, Func<Task> callback = null)
    Parameters
    Type Name Description
    TimeSpan interval

    Optionally specifies the timer interval.

    bool delayFirstTick

    The callback is called immediately by default. You can delay this for interval by passing this as true. This defaults to false.

    Func<Task> callback

    Optionally specifies the timer callback.

    note

    This must be specified if no callback was passed to the constructor or a previous call to Start(TimeSpan, bool, Func<Task>).

    Exceptions
    Type Condition
    InvalidOperationException

    Thrown if this is the first time Start(TimeSpan, bool, Func<Task>) is called for the instance and interval is not passed or when callback is null and no callback was specified in constructor or a previous call to Start(TimeSpan, bool, Func<Task>).

    ObjectDisposedException

    Thrown when the instance is disposed.

    Stop()

    Stops the timer.

    Declaration
    public void Stop()
    Exceptions
    Type Condition
    ObjectDisposedException

    Thrown when the instance is disposed.

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