Sha256: 788f9c867310887a39cf2d7835322118a799d76e25f8eb3b71e7bbdd9e513f02
Contents?: true
Size: 1.7 KB
Versions: 72
Compression:
Stored size: 1.7 KB
Contents
# encoding: utf-8
module LogStash::Util::JavaVersion
# Return the current java version string. Returns nil if this is a non-java platform (e.g. MRI).
def self.version
java.lang.System.getProperty("java.runtime.version")
end
# Takes a string of a java version ex: "1.8.0_24-beta"
# and returns a parsed map of the components.
# nil inputs will be returned as nil.
def self.parse_java_version(version_string)
return nil if version_string.nil?
# Crazy java versioning rules @ http://www.oracle.com/technetwork/java/javase/versioning-naming-139433.html
# The regex below parses this all correctly http://rubular.com/r/sInQc3Nc7f
match = version_string.match(/\A(\d+)\.(\d+)\.(\d+)(_(\d+))?(-(.+))?\Z/)
return nil unless match
major, minor, patch, ufull, update, bfull, build = match.captures
{
:full => version_string,
:major => major.to_i,
:minor => minor.to_i,
:patch => patch.to_i,
:update => update.to_i, # this is always coerced to an int (a nil will be zero) to make comparisons easier
:build => build # not an integer, could be b06 for instance!,
}
end
def self.validate_java_version!
if bad_java_version?(version)
raise "Java version 1.8.0 or later is required. (You are running: #{version})"
end
end
# Determine if the given java version string is a bad version of java
# If it is, return true, if it isn't return false.
# Accepts nil, returning nil.
def self.bad_java_version?(version_string)
return nil if version_string.nil?
parsed = parse_java_version(version_string)
return false unless parsed
if parsed[:major] == 1 && parsed[:minor] < 8
true
else
false
end
end
end
Version data entries
72 entries across 72 versions & 1 rubygems