Retry

Basic retrying class. Retries a specified block of code a specified number of times before giving up. The 'code block' is passed as a lazy bool parameter to the loop() / opCall() method.

The failure condition for the block of code can be set by passing a delegate to the constructor. The default failure condition is that any exception thrown while executing the code block indicates failure.

The behaviour of the class can be easily modified by inherting and overriding the following methods:

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class Retry {

alias SuccessDecider = bool delegate(lazy void);

this(SuccessDecider success_decide);

void loop(uint max_retries, void dg);

alias opCall = loop;

bool retry_decide();

void on_retry();

}

Constructors

this this(SuccessDecider success_decide): Constructor.

Members

Aliases

SuccessDecider alias SuccessDecider = bool delegate(lazy void): Alias for a delegate which executes a code block and decides if it has succeeded or failed.
opCall alias opCall = loop: Undocumented in source.

Functions

loop void loop(uint max_retries, void dg): Initiates the execution and possible retrying of a block of code.
on_retry void on_retry(): Called before a retry is commenced. The base class behaviour does nothing, but it can be overridden by derived classes to implement special behaviour on retry.
retry_decide bool retry_decide(): Decides whether to keep retrying or to give up.

Retry

Constructors

Members

Aliases

Functions

Detailed Description

retry decide

on retry

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