Enhance IP resolution for SSH

* Implement network preference (fix ggiamarchi#194)
* Always read IP from nova even if a specific floating
  IP is set in the provider's attribute 'floating_ip'

README.md

@@ -135,6 +135,9 @@ end
 
 * `floating_ip_pool_always_allocate` - if set to true, vagrant will always allocate floating ip instead of trying to reuse unassigned ones
 
+__N.B.__
+> If the instance have a floating IP, this IP will be used to SSH into the instance.
+
 #### Networks
 
 * `networks` - Network list the server must be connected on. Can be omitted if only one private network exists
@@ -176,6 +179,10 @@ config.vm.provider :openstack do |os|
 end
 ```
 
+__N.B.__
+> If the instance does not have a floating IP, the IP of the
+> first network in the list will be used to SSH into the instance
+
 #### Volumes
 
 * `volumes` - Volume list that have to be attached to the server. You can provide volume id or name. However, in Openstack

source/lib/vagrant-openstack-provider/utils.rb

@@ -6,15 +6,20 @@ def initialize
       end
 
       def get_ip_address(env)
-        return env[:machine].provider_config.floating_ip unless env[:machine].provider_config.floating_ip.nil?
-        details = env[:openstack_client].nova.get_server_details(env, env[:machine].id)
-        details['addresses'].each do |network|
-          network[1].each do |network_detail|
+        addresses = env[:openstack_client].nova.get_server_details(env, env[:machine].id)['addresses']
+        addresses.each do |_, network|
+          network.each do |network_detail|
             return network_detail['addr'] if network_detail['OS-EXT-IPS:type'] == 'floating'
           end
         end
-        return details['addresses'].first[1][0]['addr'] if details['addresses'].size >= 1 && details['addresses'].first[1].size >= 1
-        fail Errors::UnableToResolveIP
+        fail Errors::UnableToResolveIP if addresses.size == 0
+        if addresses.size == 1
+          net_addresses = addresses.first[1]
+        else
+          net_addresses = addresses[env[:machine].provider_config.networks[0]]
+        end
+        fail Errors::UnableToResolveIP if net_addresses.size == 0
+        net_addresses[0]['addr']
       end
     end
   end

source/spec/vagrant-openstack-provider/action/read_ssh_info_spec.rb

@@ -25,8 +25,17 @@
 
   let(:nova) do
     double('nova').tap do |nova|
-      nova.stub(:get_all_floating_ips).with(anything) do
-        [FloatingIP.new('80.81.82.83', 'pool-1', nil), FloatingIP.new('30.31.32.33', 'pool-2', '1234')]
+      nova.stub(:get_server_details).with(env, '1234') do
+        {
+          'addresses' => {
+            'net' => [
+              {
+                'addr' => '80.80.80.80',
+                'OS-EXT-IPS:type' => 'floating'
+              }
+            ]
+          }
+        }
       end
     end
   end
@@ -136,7 +145,19 @@
           config.stub(:floating_ip) { '80.80.80.80' }
           config.stub(:keypair_name) { nil }
           config.stub(:public_key_path) { nil }
-          nova.stub(:get_server_details) { { 'key_name' => 'my_keypair_name' } }
+          nova.stub(:get_server_details) do
+            {
+              'key_name' => 'my_keypair_name',
+              'addresses' => {
+                'net' => [
+                  {
+                    'addr' => '80.80.80.80',
+                    'OS-EXT-IPS:type' => 'floating'
+                  }
+                ]
+              }
+            }
+          end
           expect(nova).to receive(:get_server_details).with(env, '1234')
           @action.read_ssh_info(env).should eq(
             host: '80.80.80.80',

source/spec/vagrant-openstack-provider/utils_spec.rb

@@ -41,7 +41,7 @@
           nova.stub(:get_server_details).with(env, '1234id') do
             {
               'addresses' => {
-                'toto' => [{
+                'net' => [{
                   'addr' => '13.13.13.13'
                 }, {
                   'addr' => '12.12.12.12',
@@ -55,13 +55,13 @@
       end
 
       context 'without floating ip in nova details' do
-        context 'with on single ip in nova details' do
+        context 'with a single ip in nova details' do
           it 'returns the single ip' do
             config.stub(:floating_ip) { nil }
             nova.stub(:get_server_details).with(env, '1234id') do
               {
                 'addresses' => {
-                  'toto' => [{
+                  'net' => [{
                     'addr' => '13.13.13.13',
                     'OS-EXT-IPS:type' => 'fixed'
                   }]
@@ -73,21 +73,28 @@
         end
 
         context 'with multiple ips in nova details' do
-          it 'fails' do
+          it 'return the one corresponding to the first network in the Vagrantfile' do
             config.stub(:floating_ip) { nil }
+            config.stub(:networks) { %w(net-2 net-1 net-3) }
             nova.stub(:get_server_details).with(env, '1234id') do
               {
                 'addresses' => {
-                  'toto' => [{
-                    'addr' => '13.13.13.13'
-                  }, {
+                  'net-1' => [{
+                    'addr' => '11.11.11.11',
+                    'OS-EXT-IPS:type' => 'fixed'
+                  }],
+                  'net-2' => [{
                     'addr' => '12.12.12.12',
-                    'OS-EXT-IPS:type' => 'private'
+                    'OS-EXT-IPS:type' => 'fixed'
+                  }],
+                  'net-3' => [{
+                    'addr' => '13.13.13.13',
+                    'OS-EXT-IPS:type' => 'fixed'
                   }]
                 }
               }
             end
-            expect(@action.get_ip_address(env)).to eq('13.13.13.13')
+            expect(@action.get_ip_address(env)).to eq('12.12.12.12')
           end
         end
 
@@ -97,7 +104,7 @@
             nova.stub(:get_server_details).with(env, '1234id') do
               {
                 'addresses' => {
-                  'toto' => []
+                  'net' => []
                 }
               }
             end
@@ -118,12 +125,5 @@
         end
       end
     end
-
-    context 'with config.floating_ip' do
-      it 'returns floating_ip' do
-        config.stub(:floating_ip) { '1.2.3.4' }
-        @action.get_ip_address(env).should eq('1.2.3.4')
-      end
-    end
   end
 end