Add a method to list cluster admins

README.md

@@ -76,6 +76,16 @@ loop do
 end
 ```
 
+List cluster admins:
+
+``` ruby
+require 'influxdb'
+
+influxdb = InfluxDB::Client.new
+
+influxdb.get_cluster_admin_list
+```
+
 List databases:
 
 ``` ruby

lib/influxdb/client.rb

@@ -85,6 +85,13 @@ def delete_cluster_admin(username)
       response = @http.request(Net::HTTP::Delete.new(url))
     end
 
+    def get_cluster_admin_list
+      url = full_url("cluster_admins")
+
+      response = @http.request(Net::HTTP::Get.new(url))
+      JSON.parse(response.body)
+    end
+
     def create_database_user(database, username, password)
       url = full_url("db/#{database}/users")
       data = JSON.generate({:name => username, :password => password})

spec/influxdb/client_spec.rb

@@ -94,6 +94,17 @@
     end
   end
 
+  describe "#get_cluster_admin_list" do
+    it "should GET a list of cluster admins" do
+      admin_list = [{"username"=>"root"}, {"username"=>"admin"}]
+      stub_request(:get, "http://influxdb.test:9999/cluster_admins").with(
+        :query => {:u => "username", :p => "password"}
+      ).to_return(:body => JSON.generate(admin_list), :status => 200)
+
+      @influxdb.get_cluster_admin_list.should == admin_list
+    end
+  end
+
   describe "#create_database_user" do
     it "should POST to create a new database user" do
       stub_request(:post, "http://influxdb.test:9999/db/foo/users").with(