made initial kenna api client

.pryrc

@@ -1 +1 @@
-irequire 'classes/CVE.rb'
+require '/usr/src/app/classes/kenna_api_client.rb'

classes/kenna_api_client.rb

@@ -1,4 +1,6 @@
 require 'net/http'
+require 'json'
+
 # Kenna Security API Client
 #   Requests are limited to a maximum of 5 requests per second.
 #   If you exceed this limit, your request will receive a “429: Too Many Requests" status code response.
@@ -11,16 +13,49 @@ class APIClient
     @api_url = 'https://api.kennasecurity.com'
   end
 
-  private
+  def vuln_id(id)
+    get("/vulnerabilities/#{id}")
+  end
+
+  def asset_id(id)
+    get("/assets/#{id}")
+  end
+
+  def headers(request)
+    request['X-Risk-Token'] = api_token
+    request['Content-type'] = 'application/json'
+    request
+  end
+
+  def show_errors(response)
+    response_errors = lambda do |error|
+      {
+        'response_code': error.code,
+        'response_message': error.message,
+        'response_class_name': error.class.name
+      }
+    end
+    response_errors.call response
+  end
+
+  def handle_response(response)
+    if response.is_a?(Net::HTTPSuccess)
+      JSON.parse(response.body)
+    else
+      show_errors(response)
+    end
+  end
 
   def get(uri)
     # pass a relative url: example - /vulnerabilities
     url = URI("#{api_url}/#{uri}")
-    request = Net::HTTP::Get.new(uri)
-    request['X-Risk-Token'] = api_token
+    request = Net::HTTP::Get.new(url)
+    request = headers(request)
 
-    response = Net::HTTP.start(uri.hostname, uri.port, use_ssl: true) do |http|
+    response = Net::HTTP.start(url.hostname, url.port, use_ssl: true) do |http|
       http.request(request)
     end
+
+    handle_response(response)
   end
 end