fix occasional errors we see when generating a uuid using uuid library by switching to securerandom

.ruby-version

@@ -0,0 +1 @@
+2.7.4

emailage.gemspec

@@ -26,6 +26,5 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency "redcarpet", "~> 3.3"
 
   spec.add_dependency "typhoeus", "~> 1.0"
-  spec.add_dependency "uuid", "~> 2.3"
   spec.add_dependency "json", "~> 2.3"
 end

lib/emailage.rb

@@ -19,4 +19,5 @@ module Emailage
   }
 
   class Error < StandardError; end
+  class Failure < StandardError; end
 end

lib/emailage/client.rb

@@ -1,5 +1,5 @@
 require 'typhoeus'
-require 'uuid'
+require 'securerandom'
 require 'json'
 
 module Emailage
@@ -38,7 +38,7 @@ def request(endpoint, params)
       params = {
         :format => 'json', 
         :oauth_consumer_key => @secret,
-        :oauth_nonce => UUID.new.generate,
+        :oauth_nonce => SecureRandom.uuid,
         :oauth_signature_method => 'HMAC-SHA1',
         :oauth_timestamp => Time.now.to_i,
         :oauth_version => 1.0
@@ -47,7 +47,10 @@ def request(endpoint, params)
       res = Typhoeus.get url, :params => params.merge(:oauth_signature => Signature.create('GET', url, params, @hmac_key))
 
       json = res.body.sub(/^[^{]+/, '')
-      JSON.parse json
+      if json.empty?
+        raise Failure, "Received Body: '#{res.body}' with Code: #{res.code}"
+      end
+      return JSON.parse json
     end
 
     public

spec/client_spec.rb

@@ -4,9 +4,10 @@
   let(:t) {spy :typhoeus}
   let(:email) {'test+emailage@example.com'}
   let(:ip) {'1.234.56.7'}
-
+  let(:response) { double :response, :body => "\xEF\xBB\xBF{\"success\":[true]}", :code => 200 }
+
   before {
-    allow(t).to receive(:get) {double :response, :body => "\xEF\xBB\xBF{\"success\":[true]}"}
+    allow(t).to receive(:get) {response}
     stub_const 'Typhoeus', t
   }
 
@@ -33,6 +34,22 @@
     it 'parses response body as JSON' do
       expect(request).to eq 'success' => [true]
     end
+
+    context 'empty string returned' do
+      let(:response) { double :response, :body => "", :code => 503 }
+
+      it 'raises TemporaryError' do
+        expect { request }.to raise_error(Emailage::Failure)
+      end
+    end
+
+    context 'error string is returned' do
+      let(:response) { double :response, :body => "dummy body }", :code => 503 }
+
+      it 'raises TemporaryError' do
+        expect { request }.to raise_error(Emailage::Failure)
+      end
+    end
   end
 
   describe '#query' do