Sha256: 633376673eaf72083095566b3ca1845c4ae1e2d9bcf5e1dbbb31ff3cc073ca70
Contents?: true
Size: 1.76 KB
Versions: 47
Compression:
Stored size: 1.76 KB
Contents
require "net/http"
module Lambdagem::Extract::ClassMethods
# Exits early if not all the linux gems are available
# It better to error now then later on Lambda
# Provide users with instructions on how to compile gems
#
# We check all the availability before even downloading so we can provide a
# full list of gems they might want to research all at once instead of incrementally
def check_availability(gems)
availabilities = gems.inject({}) do |hash, gem_name|
exist = url_exists?(gem_url(gem_name))
hash[gem_name] = exist
hash.merge(hash)
end
all_available = availabilities.values.all? {|v| v }
unless all_available
puts "Your project requires some pre-compiled Linux gems that are not yet available as a pre-compiled lambda gem. The build process will not continue because there's no point wasting your time deploying to Lambda and finding out later."
puts "The unavailable gems are:"
availabilities.each do |gem_name, available|
next if available
puts " #{gem_name}"
end
puts <<-EOL
How to fix this:
1. Build your jets project on an Amazon Lambda based EC2 Instance and compile your own gems with the proper shared libaries.
2. Configure jets to lookup your own pre-compiled gems url.
3. Add the the required gems to boltopslabs/lambdagems and submit a pull request.
More info: http://lambdagems.com
EOL
exit
end
end
# Example url:
# https://gems.lambdagems.com/gems/2.5.0/byebug/byebug-9.1.0-x86_64-linux.tgz
def url_exists?(url)
url = URI.parse(url)
req = Net::HTTP.new(url.host, url.port).tap do |http|
http.use_ssl = true
end
res = req.request_head(url.path)
res.code == "200"
rescue SocketError, OpenURI::HTTPError
false
end
end
Version data entries
47 entries across 47 versions & 1 rubygems