Class AnonymousActionRenderer

An IActionRenderer that invokes its callbacks. In other words, this is an IActionRenderer version of AnonymousRenderer.

This class is useful when you want an one-use ad-hoc implementation (i.e., Java-style anonymous class) of IActionRenderer interface.

Inheritance

Object

AnonymousRenderer

AnonymousActionRenderer

Implements

IActionRenderer

IRenderer

Inherited Members

AnonymousRenderer.BlockRenderer

AnonymousRenderer.RenderBlock(Block, Block)

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 sealed class AnonymousActionRenderer : AnonymousRenderer, IActionRenderer, IRenderer

Examples

With object initializers, you can easily make an one-use action renderer:

var actionRenderer = new AnonymousActionRenderer
{
    ActionRenderer = (action, context, nextStates) =>
    {
        // Implement RenderAction() here.
    };
};

Properties

ActionErrorRenderer

A callback function to be invoked together with RenderActionError(IValue, IActionContext, Exception).

Declaration

public Action<IValue, IActionContext, Exception> ActionErrorRenderer { get; set; }

Property Value

Type	Description
Action<Bencodex.Types.IValue, IActionContext, Exception>

ActionRenderer

A callback function to be invoked together with RenderAction(IValue, IActionContext, IAccountStateDelta).

Declaration

public Action<IValue, IActionContext, IAccountStateDelta> ActionRenderer { get; set; }

Property Value

Type	Description
Action<Bencodex.Types.IValue, IActionContext, IAccountStateDelta>

BlockEndRenderer

A callback function to be invoked together with RenderBlockEnd(Block, Block).

Declaration

public Action<Block, Block> BlockEndRenderer { get; set; }

Property Value

Type	Description
Action<Block, Block>

Methods

RenderAction(IValue, IActionContext, IAccountStateDelta)

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

Declaration

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

Parameters

Type	Name	Description
Bencodex.Types.IValue	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(IValue, IActionContext, Exception) is called instead) or once the action has been unrendered.

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

RenderActionError(IValue, IActionContext, Exception)

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

Declaration

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

Parameters

Type	Name	Description
Bencodex.Types.IValue	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, Block) method is called (where its second parameter newTip contains a transaction the action belongs to).

RenderBlockEnd(Block, Block)

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

Declaration

public void RenderBlockEnd(Block oldTip, Block newTip)

Parameters

Type	Name	Description
Block	oldTip	The previous Tip.
Block	newTip	The current Tip.

Remarks

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

Implements

IActionRenderer

IRenderer