Floating IP range support in Nova network

This patch provides a possibility to add
ip ranges of networks (i.e.: 192.168.1.210-192.168.1.224)
to a floating ip pool.

Depends-On: I802280e4e2912c9aed1c10d519ead84b1f22f900

Change-Id: Iffb0af32753708decb8d2b60f1075b66f7520553

Gemfile

@@ -15,6 +15,7 @@ group :development, :test do
   gem 'json',                                 :require => 'false'
   gem 'webmock',                              :require => 'false'
   gem 'r10k',                                 :require => 'false'
+  gem 'netaddr',                              :require => 'false'
 end
 
 group :system_tests do

lib/puppet/provider/nova_floating/nova_manage.rb

@@ -1,3 +1,5 @@
+require 'netaddr'
+
 Puppet::Type.type(:nova_floating).provide(:nova_manage) do
 
   desc "Manage nova floating"
@@ -5,19 +7,79 @@ Puppet::Type.type(:nova_floating).provide(:nova_manage) do
   optional_commands :nova_manage => 'nova-manage'
 
   def exists?
-    # Calculate num quads to grab for prefix
-    mask=resource[:network].sub(/.*\/([0-9][0-9]?)/, '\1').to_i
-    num_quads = 4 - mask / 8
-    prefix=resource[:network].sub(/(\.[0-9]{1,3}){#{num_quads}}(\/[0-9]{1,2})?$/, '') + "."
-    return nova_manage("floating", "list").match(/#{prefix}/)
+    if resource[:network] =~ /^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\/[0-9]{1,2}$/
+      # Calculate num quads to grab for prefix$$
+      mask=resource[:network].sub(/.*\/([0-9][0-9]?)/, '\1').to_i
+      num_quads = 4 - mask / 8
+      prefix=resource[:network].sub(/(\.[0-9]{1,3}){#{num_quads}}(\/[0-9]{1,2})?$/, '') + "."
+      return nova_manage("floating", "list").match(/#{prefix}/)
+
+    elsif resource[:network].to_s =~ /^.{0,2}\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}-\d{1,3}\.\d{1,3}.\d{1,3}.\d{1,3}.{0,2}/
+      if resource[:ensure] == :absent
+        operate_range.any?
+      else
+        operate_range.empty?
+      end
+    end
   end
 
   def create
-     nova_manage("floating", "create", '--pool', resource[:pool], resource[:network])
+    if resource[:network] =~ /^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\/[0-9]{1,2}$/
+      nova_manage("floating", "create", '--pool', resource[:pool], resource[:network])
+
+    elsif resource[:network].to_s =~ /^.{0,2}\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}-\d{1,3}\.\d{1,3}.\d{1,3}.\d{1,3}.{0,2}/
+      mixed_range.each do |ip|
+        nova_manage("floating", "create", ip)
+      end
+    end
   end
 
   def destroy
-    nova_manage("floating", "delete", resource[:network])
+    if resource[:network] =~ /^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\/[0-9]{1,2}$/
+      nova_manage("floating", "delete", resource[:network])
+
+    elsif resource[:network].to_s =~ /^.{0,2}\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}-\d{1,3}\.\d{1,3}.\d{1,3}.\d{1,3}.{0,2}/
+      mixed_range.each do |ip|
+        nova_manage("floating", "delete", ip )
+      end
+    end
   end
 
+  # Create range in cidr, including first and last ip
+  # Nova will create this range, excluding network and broadcast IPs
+  def mixed_range
+    range = []
+    NetAddr.merge(operate_range).each do |cidr|
+      tmp_range = NetAddr::CIDR.create(cidr).enumerate
+      range << tmp_range.first.to_s
+      range << tmp_range.last.to_s
+    end
+    range.uniq!
+    range += NetAddr.merge(operate_range).delete_if{ |part| part =~ /\/3[12]/}
+  end
+
+  # Calculate existed IPs and provided ip ranges
+  def operate_range
+    exist_range = []
+    output = nova_manage("floating", "list")
+    range_list = output.scan(/\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}/)
+    range_list.each do |element|
+      exist_range << element
+    end
+    if @resource[:ensure] == :absent
+       ip_range & exist_range
+    else
+       ip_range - exist_range
+    end
+  end
+
+  def ip_range
+    ip_range = []
+    Array(@resource[:network]).each do |rng|
+      ip = rng.split('-')
+      generated_range = NetAddr.range(NetAddr::CIDR.create(ip.first), NetAddr::CIDR.create(ip.last))
+      ip_range += generated_range.unshift(ip.first).push(ip.last)
+    end
+    return ip_range
+  end
 end

lib/puppet/type/nova_floating.rb

@@ -5,8 +5,9 @@ Puppet::Type.newtype(:nova_floating) do
   ensurable
 
   newparam(:network, :namevar => true) do
-    desc "Network (ie, 192.168.1.0/24 or 192.168.1.128/25 etc.)"  
-    newvalues(/^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\/[0-9]{1,2}$/)
+    desc "It can contain network (ie, 192.168.1.0/24 or 192.168.1.128/25 etc.),
+          ip range ('192.168.1.1-192.168.1.55' or list of ip ranges ['192.168.1.1-192.168.1.25', '192.168.1.30-192.168.1.55'])"
+    newvalues(/^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\/[0-9]{1,2}$ || ^(\d{1,3}\.){3}\d{1,3}-(\d{1,3}\.){3}\d{1,3}$/)
   end
 
   newparam(:pool) do

spec/unit/provider/nova_floating/nova_manage_spec.rb

@@ -0,0 +1,99 @@
+require 'puppet'
+require 'puppet/provider/nova_floating/nova_manage'
+require 'tempfile'
+
+provider_class = Puppet::Type.type(:nova_floating).provider(:nova_manage)
+
+describe provider_class do
+
+  let :range_attrs do
+    {
+      :ensure          => 'present',
+      :pool            => 'nova',
+      :network         => '10.1.0.1-10.1.0.2',
+    }
+  end
+
+  let :network_attrs do
+    {
+      :ensure         => 'present',
+      :pool           => 'nova',
+      :network        => '11.1.0.0/30'
+    }
+  end
+
+  let :resource_range do
+    Puppet::Type::Nova_floating.new(range_attrs)
+  end
+
+  let :resource_network do
+    Puppet::Type::Nova_floating.new(network_attrs)
+  end
+
+  let :provider_range do
+    provider_class.new(resource_range)
+  end
+
+  let :provider_network do
+    provider_class.new(resource_network)
+  end
+
+  shared_examples 'nova_floating' do
+
+    describe '#exists?' do
+
+      it 'should check if ips of a network are not existing' do
+        provider_network.expects(:nova_manage).with('floating', 'list').returns('No floating IP addresses have been defined.')
+        expect(provider_network.exists?).to be_falsey
+        end
+      it 'should check if ips of a network are existing' do
+        provider_network.expects(:nova_manage).with('floating', 'list').returns('None    11.1.0.1        None    nova    br-ex\nNone    11.1.0.2        None    nova    br-ex')
+        expect(provider_network.exists?).to be_truthy
+       end
+
+      it 'should check if ips are not existing' do
+        provider_range.expects(:nova_manage).with('floating', 'list').returns('No floating IP addresses have been defined.')
+        expect(provider_range.exists?).to be_falsey
+      end
+      it 'should check if ips are existing' do
+        provider_range.expects(:nova_manage).with('floating', 'list').returns('None    10.1.0.1        None    nova    br-ex\nNone    10.1.0.2        None    nova    br-ex')
+        expect(provider_range.exists?).to be_truthy
+      end
+
+    end
+
+    describe '#create' do
+      it 'should check if ips of network were created' do
+        provider_network.expects(:nova_manage).with('floating', 'create', '--pool', 'nova', '11.1.0.0/30').returns('None    11.1.0.1        None    nova    br-ex\nNone    11.1.0.2        None    nova    br-ex')
+        expect(provider_network.create).to be_truthy
+      end
+
+      it 'should check if ips of range were created' do
+        provider_range.stubs(:nova_manage).with('floating', 'create', '10.1.0.1')
+        provider_range.stubs(:nova_manage).with('floating', 'create', '10.1.0.2')
+        provider_range.stubs(:nova_manage).with('floating', 'list').returns('None    10.1.0.1        None    nova    br-ex\nNone    10.1.0.2        None    nova    br-ex')
+        expect(provider_range.create).to be_truthy
+      end
+
+    end
+
+
+    describe '#destroy' do
+      it 'should check if ips of network were deleted' do
+        provider_network.expects(:nova_manage).with('floating', 'delete', '11.1.0.0/30').returns('No floating IP addresses have been defined.')
+      expect(provider_network.destroy).to be_truthy
+      end
+
+      it 'should check if ips of range were deleted' do
+        provider_range.stubs(:nova_manage).with('floating', 'delete', '10.1.0.1')
+        provider_range.expects(:nova_manage).with('floating', 'list').returns('None    10.1.0.2        None    nova    br-ex')
+        provider_range.stubs(:nova_manage).with('floating', 'delete', '10.1.0.2')
+        provider_range.expects(:nova_manage).with('floating', 'list').returns('No floating IP addresses have been defined.')
+        expect(provider_range.destroy).to be_truthy
+      end
+
+    end
+ end
+
+it_behaves_like('nova_floating')
+end