Added a proxy check and environment variables to info rake task

lib/gitlab/proxy.rb

+module Gitlab
+  class Proxy
+    class << self
+      # Try to detect possible proxies defined in the OS
+      # @return [Hash] of ENV variables that ends with '_proxy' case-insensitive
+      def detect_proxy
+        env.select { |k, v| /_proxy$/i =~ k }
+      end
+
+      private
+
+      def env
+        ENV
+      end
+    end
+  end
+end

lib/tasks/gitlab/info.rake

@@ -15,10 +15,13 @@ namespace :gitlab do
       rake_version = run_and_match(%W(rake --version), /[\d\.]+/).try(:to_s)
       # check redis version
       redis_version = run_and_match(%W(redis-cli --version), /redis-cli (\d+\.\d+\.\d+)/).to_a
+      # check for system defined proxies
+      proxies = Gitlab::Proxy.detect_proxy.map{|k,v| "#{k}: #{v}"}.join("\n\t\t")
 
       puts ""
       puts "System information".color(:yellow)
       puts "System:\t\t#{os_name || "unknown".color(:red)}"
+      puts "Proxy:\t\t#{proxies.present? ? proxies.color(:green) : "no"}"
       puts "Current User:\t#{run_command(%W(whoami))}"
       puts "Using RVM:\t#{rvm_version.present? ? "yes".color(:green) : "no"}"
       puts "RVM Version:\t#{rvm_version}" if rvm_version.present?
@@ -84,6 +87,9 @@ namespace :gitlab do
       puts "Hooks:\t\t#{Gitlab.config.gitlab_shell.hooks_path}"
       puts "Git:\t\t#{Gitlab.config.git.bin_path}"
 
+      puts ""
+      puts "Environment Variables".color(:yellow)
+      puts ENV.map{|k,v| %Q(#{k}="#{v}")}.join("\n")
     end
   end
 end

spec/lib/gitlab/proxy_spec.rb

+require 'spec_helper'
+
+describe Gitlab::Proxy do
+  describe '.detect_proxy' do
+    subject { described_class.detect_proxy }
+
+    context 'without any existing proxies' do
+      before do
+        allow(described_class).to receive(:env).and_return({})
+      end
+      it 'returns an empty array' do
+        expect(subject).to be_empty
+      end
+    end
+
+    context 'with existing proxies' do
+      before do
+        stubbed_env = { 'http_proxy' => 'http://proxy.example.com',
+                        'HTTPS_PROXY' => 'https://proxy.example.com',
+                        'http_notaproxy' => 'http://example.com' }
+        allow(described_class).to receive(:env).and_return(stubbed_env)
+      end
+
+      it 'returns a list of existing proxies' do
+        aggregate_failures 'list of proxies' do
+          expect(subject).to include('http_proxy')
+          expect(subject).to include('HTTPS_PROXY')
+          expect(subject).not_to include('http_notaproxy')
+        end
+      end
+    end
+  end
+end