Implement Kong server info endpoints (#14)

README.md

@@ -241,6 +241,16 @@ consumer = Kong::Consumer.find_by_username('testuser')
 consumer.acls
 ```
 
+#### Server Information
+
+```ruby
+Kong::Server.info
+Kong::Server.version
+Kong::Server.status
+Kong::Server.cluster
+Kong::Server.remove_node(node_name)
+```
+
 ## Contributing
 
 1. Fork it ( https://github.com/kontena/kong-client-ruby/fork )

lib/kong.rb

@@ -13,3 +13,4 @@
 require_relative 'kong/key_auth'
 require_relative 'kong/jwt'
 require_relative 'kong/acl'
+require_relative 'kong/server'

lib/kong/server.rb

@@ -0,0 +1,23 @@
+module Kong
+  class Server
+    def self.version
+      self.info['version'] rescue nil
+    end
+
+    def self.info
+      Client.instance.get('/')
+    end
+
+    def self.status
+      Client.instance.get('/status')
+    end
+
+    def self.cluster
+      Client.instance.get('/cluster')
+    end
+
+    def self.remove_node(name)
+      Client.instance.delete("/cluster/nodes/#{name}")
+    end
+  end
+end

spec/kong/server_spec.rb

@@ -0,0 +1,39 @@
+require_relative "../spec_helper"
+
+describe Kong::Server do
+  describe '.info' do
+    it 'makes GET / request' do
+      expect(Kong::Client.instance).to receive(:get).with('/')
+      described_class.info
+    end
+  end
+
+  describe '.version' do
+    it 'returns version information' do
+      allow(Kong::Client.instance).to receive(:get).with('/')
+        .and_return({ 'version' => '0.10.0' })
+      expect(described_class.version).to eq('0.10.0')
+    end
+  end
+
+  describe '.status' do
+    it 'makes GET /status request' do
+      expect(Kong::Client.instance).to receive(:get).with('/status')
+      described_class.status
+    end
+  end
+
+  describe '.cluster' do
+    it 'makes GET /cluster request' do
+      expect(Kong::Client.instance).to receive(:get).with('/cluster')
+      described_class.cluster
+    end
+  end
+
+  describe '.remove_node' do
+    it 'makes DELETE /cluster/nodes/:name request' do
+      expect(Kong::Client.instance).to receive(:delete).with('/cluster/nodes/:name')
+      described_class.remove_node(':name')
+    end
+  end
+end