Class LoggedActionRenderer<T>

Decorates an IActionRenderer<T> so that all event messages are logged. In other words, this is an IActionRenderer<T> version of LoggedRenderer<T>.

Every single event message causes two log messages: one is logged before rendering, and other one is logged after rendering. If any exception is thrown it is also logged with the log level (regardless of Level configuration).

Inheritance

Object

LoggedRenderer<T>

LoggedActionRenderer<T>

Implements

IActionRenderer<T>

IRenderer<T>

Inherited Members

LoggedRenderer<T>.Renderer

LoggedRenderer<T>.Level

LoggedRenderer<T>.Logger

LoggedRenderer<T>.RenderBlock(Block<T>, Block<T>)

LoggedRenderer<T>.RenderReorg(Block<T>, Block<T>, Block<T>)

LoggedRenderer<T>.RenderReorgEnd(Block<T>, Block<T>, Block<T>)

LoggedRenderer<T>.LogBlockRendering(String, Block<T>, Block<T>, Action<Block<T>, Block<T>>)

Object.Equals(Object)

Object.Equals(Object, Object)

Object.GetHashCode()

Object.GetType()

Object.MemberwiseClone()

Object.ReferenceEquals(Object, Object)

Object.ToString()

Namespace: Libplanet.Blockchain.Renderers

Assembly: Libplanet.dll

Syntax

public class LoggedActionRenderer<T> : LoggedRenderer<T>, IActionRenderer<T>, IRenderer<T> where T : IAction, new()

Type Parameters

Name	Description
T	An IAction type. It should match to BlockChain<T>'s type parameter.

Examples

IActionRenderer<ExampleAction> actionRenderer = new SomeActionRenderer();
// Wraps the action renderer with LoggedActionRenderer:
actionRenderer = new LoggedActionRenderer<ExampleAction>(
    actionRenderer,
    Log.Logger,
    LogEventLevel.Information,
);

Constructors

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LoggedActionRenderer(IActionRenderer<T>, ILogger, LogEventLevel)

Creates a new LoggedActionRenderer<T> instance which decorates the given action renderer.

Declaration

public LoggedActionRenderer(IActionRenderer<T> renderer, ILogger logger, LogEventLevel level = null)

Parameters

Type	Name	Description
IActionRenderer<T>	renderer	The actual action renderer to forward all event messages to and actually render things.
ILogger	logger	The logger to write log messages to. Note that all log messages this decorator writes become in the context of the `renderer`'s type (with the context property `SourceContext`).
LogEventLevel	level	The log event level. All log messages become this level.

Properties

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ActionRenderer

The inner action renderer to forward all event messages to and actually render things.

Declaration

public IActionRenderer<T> ActionRenderer { get; }

Property Value

Type	Description
IActionRenderer<T>

Methods

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RenderAction(IAction, IActionContext, IAccountStateDelta)

Does things that should be done right after an action is executed and applied to the blockchain.

Declaration

public void RenderAction(IAction action, IActionContext context, IAccountStateDelta nextStates)

Parameters

Type	Name	Description
IAction	action	An executed action.
IActionContext	context	The equivalent context object to an object passed to the `action`'s Execute(IActionContext) method. That means PreviousStates are the states right before this action executed. For the states after this action executed, use the `nextStates` argument instead.
IAccountStateDelta	nextStates	The states right after this action executed, which means it is equivalent to the states `action`'s Execute(IActionContext) method returned.

Remarks

It is guaranteed to be called only once for an action, and only after applied to the blockchain, unless an exception is thrown during executing the action (in that case RenderActionError(IAction, IActionContext, Exception) is called instead) or once the action has been unrendered.

Also note that this method is invoked after RenderBlock(Block<T>, Block<T>) method is called (where its second parameter newTip contains a transaction the action belongs to).

The reason why the parameter action takes IAction instead of T is because it can take block actions (BlockAction) besides transaction actions (Actions).

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RenderActionError(IAction, IActionContext, Exception)

Does the similar things to RenderAction(IAction, IActionContext, IAccountStateDelta), except that this method is invoked when action has terminated with an exception.

Declaration

public void RenderActionError(IAction action, IActionContext context, Exception exception)

Parameters

Type	Name	Description
IAction	action	An action which threw an exception during execution.
IActionContext	context	The equivalent context object to an object passed to the `action`'s Execute(IActionContext) method. That means PreviousStates are the states right before this action executed.
Exception	exception	The exception thrown during executing the `action`.

Remarks

Also note that this method is invoked after RenderBlock(Block<T>, Block<T>) method is called (where its second parameter newTip contains a transaction the action belongs to).

The reason why the parameter action takes IAction instead of T is because it can take block actions (BlockAction) besides transaction actions (Actions).

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RenderBlockEnd(Block<T>, Block<T>)

Does things that should be done right all actions in a new Block<T> are rendered.

Declaration

public void RenderBlockEnd(Block<T> oldTip, Block<T> newTip)

Parameters

Type	Name	Description
Block<T>	oldTip	The previous Tip.
Block<T>	newTip	The current Tip.

Remarks

It is guaranteed to be called only once for a block.

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UnrenderAction(IAction, IActionContext, IAccountStateDelta)

Does things that should be undone right after the given action is invalidated (mostly due to reorg, i.e., a block which the action has belonged to becomes considered stale).

This method takes the equivalent arguments to RenderAction(IAction, IActionContext, IAccountStateDelta) method.

Declaration

public void UnrenderAction(IAction action, IActionContext context, IAccountStateDelta nextStates)

Parameters

Type	Name	Description
IAction	action	A stale action.
IActionContext	context	The equivalent context object to an object passed to the `action`'s Execute(IActionContext) method. That means PreviousStates are the states right before this action executed. For the states after this action executed, use the `nextStates` argument instead.
IAccountStateDelta	nextStates	The states right after this action executed, which means it is equivalent to the states `action`'s Execute(IActionContext) method returned.

Remarks

As a rule of thumb, this should be the inverse of RenderAction(IAction, IActionContext, IAccountStateDelta) method with redrawing the graphics on the display at the finish.

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UnrenderActionError(IAction, IActionContext, Exception)

Does the similar things to UnrenderAction(IAction, IActionContext, IAccountStateDelta), except that this method is invoked when action has terminated with an exception.

This method takes the equivalent arguments to RenderActionError(IAction, IActionContext, Exception) method.

Declaration

public void UnrenderActionError(IAction action, IActionContext context, Exception exception)

Parameters

Type	Name	Description
IAction	action	An action which threw an exception during execution.
IActionContext	context	The equivalent context object to an object passed to the `action`'s Execute(IActionContext) method. That means PreviousStates are the states right before this action executed.
Exception	exception	The exception thrown during executing the `action`.

Remarks

The reason why the parameter action takes IAction instead of T is because it can take block actions (BlockAction) besides transaction actions (Actions).

Implements

IActionRenderer<T>

IRenderer<T>