Add custom Azure logger

lib/vmdb/loggers.rb

@@ -113,7 +113,7 @@ def self.create_loggers
       $api_log           = create_multicast_logger(path_dir.join("api.log"))
       $miq_ae_logger     = create_multicast_logger(path_dir.join("automation.log"))
       $aws_log           = create_multicast_logger(path_dir.join("aws.log"))
-      $azure_log         = create_multicast_logger(path_dir.join("azure.log"))
+      $azure_log         = create_multicast_logger(path_dir.join("azure.log"), AzureLogger)
       $cn_monitoring_log = create_multicast_logger(path_dir.join("container_monitoring.log"))
       $datawarehouse_log = create_multicast_logger(path_dir.join("datawarehouse.log"))
       $fog_log           = create_multicast_logger(path_dir.join("fog.log"), FogLogger)

lib/vmdb/loggers/azure_logger.rb

@@ -0,0 +1,26 @@
+module Vmdb::Loggers
+  class AzureLogger < VMDBLogger
+    def initialize(*loggers)
+      super
+
+      # pulled from Ruby's `Logger::Formatter`, which is what it defaults to when it is `nil`
+      @datetime_format = "%Y-%m-%dT%H:%M:%S.%6N "
+      @formatter       = Vmdb::Loggers::AzureLogger::Formatter.new
+    end
+
+    def <<(msg)
+      msg = msg.strip
+      log(level, msg)
+      msg.size
+    end
+
+    class Formatter < VMDBLogger::Formatter
+      def call(severity, datetime, progname, msg)
+        msg = msg.sub(/Bearer(.*?)\"/, 'Bearer [FILTERED] "')
+        msg = msg.sub(/SharedKey(.*?)\"/, 'SharedKey [FILTERED] "')
+        msg = msg.sub(/client_secret=(.*?)&/, "client_secret=[FILTERED]&")
+        super(severity, datetime, progname, msg)
+      end
+    end
+  end
+end

spec/lib/vmdb/loggers/azure_logger_spec.rb

@@ -0,0 +1,26 @@
+describe Vmdb::Loggers::AzureLogger do
+  before do
+    @log_stream = StringIO.new
+    @log = described_class.new(@log_stream)
+  end
+
+  context "azure" do
+    it "filters out bearer tokens" do
+      @log.log(@log.level, 'Bearer abcd1234 "stuff"')
+      @log_stream.rewind
+      expect(@log_stream.read).to match(Regexp.quote('Bearer [FILTERED] "stuff"'))
+    end
+
+    it "filters out sharedkey tokens" do
+      @log.log(@log.level, 'SharedKey xxx123 "stuff"')
+      @log_stream.rewind
+      expect(@log_stream.read).to match(Regexp.quote('SharedKey [FILTERED] "stuff"'))
+    end
+
+    it "filters out client secret tokens" do
+      @log.log(@log.level, 'client_secret=abc123&management=yadayada')
+      @log_stream.rewind
+      expect(@log_stream.read).to match(Regexp.quote('client_secret=[FILTERED]&management=yadayada'))
+    end
+  end
+end