hooks: add airbrake hook

hooks: Add airbrake hook

examples: move around to avoid overloading main

airbarke move around

remove tex.tgo

readme: cleanup

readme: try something different

hooks/airbrake/airbrake.go

@@ -0,0 +1,44 @@
+package logrus_airbrake
+
+import (
+	"github.com/Sirupsen/logrus"
+	"github.com/tobi/airbrake-go"
+)
+
+// AirbrakeHook to send exceptions to an exception-tracking service compatible
+// with the Airbrake API. You must set:
+// * airbrake.Endpoint
+// * airbrake.ApiKey
+// * airbrake.Environment (only sends exceptions when set to "production")
+//
+// Before using this hook, to send exceptions. Entries that trigger an Error,
+// Fatal or Panic should now include an "Error" field to send to Airbrake.
+type AirbrakeHook struct{}
+
+func (hook *AirbrakeHook) Fire(entry *logrus.Entry) error {
+	if entry.Data["error"] == nil {
+		entry.Logger.WithFields(logrus.Fields{
+			"source":   "airbrake",
+			"endpoint": airbrake.Endpoint,
+		}).Warn("Exceptions sent to Airbrake must have an 'error' key with the error")
+		return nil
+	}
+
+	err := airbrake.Notify(entry.Data["error"].(error))
+	if err != nil {
+		entry.Logger.WithFields(logrus.Fields{
+			"source":   "airbrake",
+			"endpoint": airbrake.Endpoint,
+		}).Warn("Failed to send error to Airbrake")
+	}
+
+	return nil
+}
+
+func (hook *AirbrakeHook) Levels() []logrus.Level {
+	return []logrus.Level{
+		logrus.Error,
+		logrus.Fatal,
+		logrus.Panic,
+	}
+}