Add getter/setter for datadog_host

README.rdoc

@@ -49,6 +49,34 @@ to take advantage of automatic tagging with the host's tags.
 If you want to attach events and points to a specific device
 on a host, simply specify the device when calling emit functions.
 
+== Configure the Datadog API Url
+
+
+    require 'rubygems'
+    require 'dogapi'
+
+    api_key = "abcdef123456"
+    application_key = "fedcba654321"
+
+    # by default the API Url will be set to https://api.datadoghq.com
+    dog = Dogapi::Client.new(api_key, application_key)
+    p dog.datadog_host  # prints https://api.datadoghq.com
+
+    # API Url can be passed to the initializer...
+    dog = Dogapi::Client.new(api_key, application_key, nil, nil, nil, nil, 'https://myproxy.local')
+    p dog.datadog_host  # prints https://myproxy.local
+
+    # ...or set on the client instance directly
+    dog = Dogapi::Client.new(api_key, application_key)
+    dog.datadog_host = 'https://myproxy.local'
+    p dog.datadog_host  # prints https://myproxy.local
+
+    # in any case, contents of the DATADOG_HOST env var take precedence
+    ENV['DATADOG_HOST'] = https://myproxy.local
+    dog = Dogapi::Client.new(api_key, application_key)
+    p dog.datadog_host  # prints https://myproxy.local
+
+
 == Submit an event to Datadog
 
 

lib/dogapi/facade.rb

@@ -12,6 +12,7 @@ module Dogapi
   # information about the JSON object structure is available in the HTTP API
   # documentation, here[https://github.com/DataDog/dogapi/wiki].
   class Client # rubocop:disable Metrics/ClassLength
+    attr_accessor :datadog_host
 
     def initialize(api_key, application_key=nil, host=nil, device=nil, silent=true, timeout=nil, endpoint=nil)
 

spec/unit/common_spec.rb

@@ -1,6 +1,17 @@
 require_relative '../spec_helper'
 
 describe 'Common' do
+  describe Dogapi.find_datadog_host do
+    it 'gives precedence to DATADOG_HOST env var' do
+      allow(ENV).to receive(:[]).with('DATADOG_HOST').and_return('example.com')
+      expect(Dogapi.find_datadog_host).to eq 'example.com'
+    end
+    it 'falls back to default url when DATADOG_HOST env var is not set' do
+      allow(ENV).to receive(:[]).with('DATADOG_HOST').and_return(nil)
+      expect(Dogapi.find_datadog_host).to eq 'https://api.datadoghq.com'
+    end
+  end
+
   context 'Scope' do
     it 'validates the Scope class' do
       obj = Dogapi::Scope.new('somehost', 'somedevice')

spec/unit/facade_spec.rb

@@ -11,6 +11,19 @@ def @service.upload(payload)
     end
   end
 
+  describe 'Datadog API url' do
+    it 'can be set in initializer' do
+      client = Dogapi::Client.new(api_key, app_key, nil, nil, nil, nil, 'example.com')
+      expect(client.datadog_host).to eq 'example.com'
+    end
+
+    it 'can be set with instance var' do
+      client = Dogapi::Client.new(api_key, app_key)
+      client.datadog_host = 'example.com'
+      expect(client.datadog_host).to eq 'example.com'
+    end
+  end
+
   describe '#emit_point' do
     it 'passes data' do
       @dogmock.emit_point('metric.name', 0, host: 'myhost')