Merge remote-tracking branch 'pr/35'

This closes GH-29 and GH-35

lib/facter/network.rb

@@ -0,0 +1,55 @@
+require 'facter'
+require 'open-uri'
+require 'timeout'
+
+#Public IP
+# Expected output: The public ipaddress of this node.
+Facter.add("network_public_ip") do
+  setcode do
+    Timeout::timeout(2) do
+      open('http://ip-echo.appspot.com', 'User-Agent' => 'Ruby/Facter').read.match(/^(?:[0-9]{1,3}\.){3}[0-9]{1,3}$/).to_s
+    end
+  end
+end
+
+#Gateway
+# Expected output: The ip address of the nexthop/default router
+Facter.add("network_nexthop_ip") do
+  my_gw = nil
+  confine :kernel => :linux
+  setcode do
+    gw_address = Facter::Util::Resolution.exec('/sbin/ip route show 0/0')
+    if gw_address
+      my_gw = gw_address.split(/\s+/)[2].match(/^(?:[0-9]{1,3}\.){3}[0-9]{1,3}$/).to_s
+    end
+    my_gw
+  end
+end
+
+#Primary interface
+#  Expected output: The specific interface name that the node uses to communicate with the nexthop
+Facter.add("network_primary_interface") do
+  confine :kernel => :linux
+  setcode do
+    gw_address = Facter::Util::Resolution.exec('/sbin/ip route show 0/0')
+    if gw_address
+      my_gw = gw_address.split(/\s+/)[2].match(/^(?:[0-9]{1,3}\.){3}[0-9]{1,3}$/).to_s
+      fun = Facter::Util::Resolution.exec("/sbin/ip route get #{my_gw}").split("\n")[0]
+      fun.split(/\s+/)[2].to_s
+    end
+  end
+end
+
+#Primary IP
+#  Expected output: The ipaddress confugred on the interface that communicates with the nexthop
+Facter.add("network_primary_ip") do
+  confine :kernel => :linux
+  setcode do
+    gw_address = Facter::Util::Resolution.exec('/sbin/ip route show 0/0')
+    if gw_address
+      my_gw = gw_address.split(/\s+/)[2].match(/^(?:[0-9]{1,3}\.){3}[0-9]{1,3}$/).to_s
+      fun = Facter::Util::Resolution.exec("/sbin/ip route get #{my_gw}").split("\n")[0]
+      fun.split(/\s+/)[4].to_s
+    end
+  end
+end

spec/unit/network_facts_spec.rb

@@ -0,0 +1,56 @@
+#!/usr/bin/env rspec
+require 'spec_helper'
+require 'open-uri'
+  describe 'network_facts' do
+    describe 'network_public_ip fact' do
+      before do
+        Facter::Util::Resolution.any_instance.stubs(:open).returns(stub(:read => '1.1.1.1'))
+      end
+      it "should be our public ip" do
+        Facter.fact(:network_public_ip).value.should == '1.1.1.1'
+      end
+    end
+  end
+  describe 'network_nexthop_ip' do
+      before do
+        Facter.fact(:kernel).stubs(:value).returns('linux')
+      end
+    context 'on a Linux host' do
+      before do 
+        Facter::Util::Resolution.stubs(:exec).with('/sbin/ip route show 0/0').returns('default via 1.2.3.4 dev eth0')
+      end
+      it 'should exec ip and determine the next hop' do
+        Facter.fact(:network_nexthop_ip).value.should == '1.2.3.4'
+      end
+    end
+  end
+  describe 'network_primary_interface' do
+      before do
+        Facter.fact(:kernel).stubs(:value).returns('linux')
+      end
+    context 'on a Linux host' do
+      before do 
+        Facter::Util::Resolution.stubs(:exec).with('/sbin/ip route show 0/0').returns('default via 1.2.3.4 dev eth0')
+        Facter::Util::Resolution.stubs(:exec).with('/sbin/ip route get 1.2.3.4').returns('1.2.3.4 dev eth0  src 1.2.3.99\n
+    cache  mtu 1500 advmss 1460 hoplimit 64')
+      end
+      it 'should exec ip and determine the primary interface' do
+        Facter.fact(:network_primary_interface).value.should == 'eth0'
+      end
+    end
+  end
+  describe 'network_primary_ip' do
+      before do
+        Facter.fact(:kernel).stubs(:value).returns('linux')
+      end
+    context 'on a Linux host' do
+      before do 
+        Facter::Util::Resolution.stubs(:exec).with('/sbin/ip route show 0/0').returns('default via 1.2.3.4 dev eth0')
+        Facter::Util::Resolution.stubs(:exec).with('/sbin/ip route get 1.2.3.4').returns("1.2.3.4 dev eth0  src 1.2.3.99\n
+    cache  mtu 1500 advmss 1460 hoplimit 64")
+      end
+      it 'should exec ip and determine the primary ip address' do
+        Facter.fact(:network_primary_ip).value.should == '1.2.3.99'
+      end
+    end
+  end