Add initial log levels to logger package

pkg/logger/levels.go

@@ -0,0 +1,36 @@
+package logger
+
+// The following constants define the various levels available to the logging
+const (
+  // Info levels for informational logs that should be logged all the time.
+  Info0 = 0
+  Info1 = Info0 +1
+  Info2 = Info1 +1
+
+  // Debug levels for debug logs that should only be logged when trying to
+  // diagnose some error
+  Debug0 = 3
+  Debug1 = Debug0 +1
+  Debug2 = Debug1 +1
+
+  // Trace levels for trace level logging that should only be logged in extreme
+  // circumstances. These can be used to make the logs very chatty.
+  Trace0 = 6
+  Trace1 = Trace0 +1
+  Trace2 = Trace1 +1
+)
+
+// The following constants should be used when logging in the various packages
+// throughout the codebase. We control the levels here cerntrally and then alias
+// them for use in the packages themselves.
+const (
+  // Core levels are used in the main package.
+  CoreInfo = Info0
+  CoreDebug = Debug0
+  CoreTrace = Trace0
+
+  // Provider levels are used in the providers package.
+  ProviderInfo = Info1
+  ProviderDebug = Debug1
+  ProviderTrace = Trace1
+)