MODULES-1619 Add haproxy version fact

lib/facter/haproxy_version.rb

@@ -0,0 +1,22 @@
+# Fact: haproxy_version
+#
+# Purpose: get haproxy's current version
+#
+# Resolution:
+#   Uses haproxy's -v flag and parses the result from 'version'
+#
+# Caveats:
+#   none
+#
+# Notes:
+#   None
+if Facter::Util::Resolution.which('haproxy')
+  Facter.add('haproxy_version') do
+    haproxy_version_cmd = 'haproxy -v 2>&1'
+    haproxy_version_result = Facter::Util::Resolution.exec(haproxy_version_cmd)
+    setcode do
+      haproxy_version_result.to_s.lines.first.strip.split(/HA-Proxy/)[1].strip.split(/version/)[1].strip.split(/((\d+\.){2,}\d+).*/)[1]
+    end
+  end
+end
+

spec/unit/facter/haproxy_version_spec.rb

@@ -0,0 +1,27 @@
+require "spec_helper"
+
+describe Facter::Util::Fact do
+  before {
+    Facter.clear
+  }
+
+  context "haproxy present" do
+    it do
+      haproxy_version_output = <<-EOS
+      HA-Proxy version 1.5.3 2014/07/25
+      Copyright 2000-2014 Willy Tarreau <w@1wt.eu>
+      EOS
+      Facter::Util::Resolution.expects(:which).with("haproxy").returns(true)
+      Facter::Util::Resolution.expects(:exec).with("haproxy -v 2>&1").returns(haproxy_version_output)
+      Facter.fact(:haproxy_version).value.should == "1.5.3"
+    end
+  end
+
+  context "haproxy not present" do
+    it do
+      Facter::Util::Resolution.stubs(:exec)
+      Facter::Util::Resolution.expects(:which).with("haproxy").returns(false)
+      Facter.fact(:haproxy_version).should be_nil
+    end
+  end
+end