https://github.com/spider-gazelle/simple_retry

a tool for retrying code blocks
https://github.com/spider-gazelle/simple_retry

Last synced: about 2 months ago
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a tool for retrying code blocks

• Host: GitHub
• URL: https://github.com/spider-gazelle/simple_retry
• Owner: spider-gazelle
• License: mit
• Created: 2020-04-07T06:42:45.000Z (over 4 years ago)
• Default Branch: master
• Last Pushed: 2021-05-26T01:48:08.000Z (over 3 years ago)
• Last Synced: 2024-06-21T18:12:46.109Z (3 months ago)
• Language: Crystal
• Size: 9.77 KB
• Stars: 6
• Watchers: 4
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

• awesome-crystal - simple_retry - Simple tool for retrying failed code blocks (Misc)

README

        
# Simple Retry

[![CI](https://github.com/spider-gazelle/simple_retry/actions/workflows/ci.yml/badge.svg)](https://github.com/spider-gazelle/simple_retry/actions/workflows/ci.yml)

A library for managing blocks of code that you might want to retry when an error occurs.

## Installation

1. Add the dependency to your `shard.yml`:

   ```yaml

   dependencies:

     simple_retry:

       github: spider-gazelle/simple_retry

   ```

2. Run `shards install`

## Usage

```crystal

require "simple_retry"

SimpleRetry.try_to do

  # Something that should succeed eventually

  num = rand(10)

  raise "bad number #{num}" if num < 5

  # Return the number

  num

end

```

There are a number of options you can use to customise

```crystal

require "simple_retry"

SimpleRetry.try_to(

  # Runs the block at most 5 times

  max_attempts: 5,

  # Will always stop retrying on these errors

  raise_on: DivisionByZeroError | ArgumentError,

  # Will only retry on these errors

  retry_on: Exception,

  # Initial delay time after first retry

  base_interval: 10.milliseconds,

  # Exponentially increase delay up to this period

  max_interval: 10.seconds,

  # Adjust the exponential growth by a random amount

  randomise: 10.milliseconds

) do |run_count : UInt64, last_error : Exception?, next_delay_time : Time::Span|

  # Something that should succeed

end

```