network-wait: Lightweight library for waiting on networked services to become available.

[ library, mit, network ] [ Propose Tags ]

Please see the README on GitHub at https://github.com/mbg/network-wait#readme

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Versions [RSS]	0.1.0.0, 0.1.1.0, 0.1.2.0, 0.2.0.0
Change log	ChangeLog.md
Dependencies	base (>=4.7 && <5), exceptions, network, retry [details]
License	MIT
Copyright	2022 Michael B. Gale
Author	Michael B. Gale
Maintainer	github@michael-gale.co.uk
Category	Network
Home page	https://github.com/mbg/network-wait#readme
Bug tracker	https://github.com/mbg/network-wait/issues
Source repo	head: git clone https://github.com/mbg/network-wait
Uploaded	by mbg at 2022-02-21T23:35:52Z
Distributions	LTSHaskell:0.2.0.0, NixOS:0.2.0.0, Stackage:0.2.0.0
Downloads	859 total (25 in the last 30 days)
Rating	(no votes yet) [estimated by Bayesian average]
Your Rating	λ λ λ
Status	Docs available [build log] Last success reported on 2022-02-22 [all 1 reports]

Readme for network-wait-0.1.0.0

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network-wait

A lightweight Haskell library for waiting on networked services to become available. This is useful if you are e.g. building a web application which relies on a database server to be available, but which may not be immediately available on application startup.

Example

All functions provided by this library work with retry policies from Control.Retry which provide good control over the retry behaviour. To wait for a PostgreSQL server to become available on the same machine:

import Control.Retry
import Network.Wait

main :: IO ()
main = do
    waitTcp retryPolicyDefault "localhost" "5432"
    putStrLn "Yay, the server is available!"

The haddock documentation for this library contains more examples.