Sha256: c4969e16a670a66290f73fa58c08a10d56c29d6bbc9116023cb566bb96d29718
Contents?: true
Size: 1.14 KB
Versions: 25
Compression:
Stored size: 1.14 KB
Contents
module Prometheus
module Client
module Helper
module Loader
class << self
def rust_impl_available?
return @rust_available unless @rust_available.nil?
check_for_rust
end
private
def load_rust_extension
begin
ruby_version = /(\d+\.\d+)/.match(RUBY_VERSION)
require_relative "../../../#{ruby_version}/fast_mmaped_file_rs"
rescue LoadError
require 'fast_mmaped_file_rs'
end
end
def check_for_rust
# This will be evaluated on each invocation even with `||=` if
# `@rust_available` if false. Running a `require` statement is slow,
# so the `rust_impl_available?` method memoizes the result, external
# callers can only trigger this method a single time.
@rust_available = begin
load_rust_extension
true
rescue LoadError
Prometheus::Client.logger.info('FastMmapedFileRs unavailable')
false
end
end
end
end
end
end
end
Version data entries
25 entries across 25 versions & 1 rubygems