Em::Http::Promise
Wraps EM::HttpRequest in the warm loving embrace of promises. Now you can just relax and enjoy asynchonous IO.
Installation
Add this line to your application's Gemfile:
gem 'em-http-promise'
And then execute:
$ bundle
Or install it yourself as:
$ gem install em-http-promise
Usage
Gets rid of the callback pyramid. Moves all error handling to one location. Now you can just relax and enjoy asynchronous IO.
Old way:
request = EM::HttpRequest.new(some_url).get
request.callback = { |response|
....
request2 = EM::HttpRequest.new(some_other_url).get
request2.callback = { |response2|
#Deal with this here
}
request.errback = {
#More error here
}
}
request.errback = { |error|
#error
}New way:
EM::HttpRequest.new(some_url).get.then { |response|
...
EM::HttpRequest.new(some_other_url).get
}.then(
-> (response2) {
#do something ehre
},
-> (error) {
#This is like a throw
}
)Curious what kind of cool things you can do?? Check this out: https://github.com/joeljackson/sinatra-promises
Contributing
- Fork it
- Create your feature branch (
git checkout -b my-new-feature) - Commit your changes (
git commit -am 'Add some feature') - Push to the branch (
git push origin my-new-feature) - Create new Pull Request