adds basic traces using open traces

2017-09-18 11:08:58 +02:00
parent 2ac6e23fc5
commit 2e350bbb8e
132 changed files with 21977 additions and 1 deletions
@@ -0,0 +1,41 @@
+// Copyright (c) 2017 Uber Technologies, Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package metrics
+
+// Factory creates new metrics
+type Factory interface {
+	Counter(name string, tags map[string]string) Counter
+	Timer(name string, tags map[string]string) Timer
+	Gauge(name string, tags map[string]string) Gauge
+
+	// Namespace returns a nested metrics factory.
+	Namespace(name string, tags map[string]string) Factory
+}
+
+// NullFactory is a metrics factory that returns NullCounter, NullTimer, and NullGauge.
+var NullFactory Factory = nullFactory{}
+
+type nullFactory struct{}
+
+func (nullFactory) Counter(name string, tags map[string]string) Counter   { return NullCounter }
+func (nullFactory) Timer(name string, tags map[string]string) Timer       { return NullTimer }
+func (nullFactory) Gauge(name string, tags map[string]string) Gauge       { return NullGauge }
+func (nullFactory) Namespace(name string, tags map[string]string) Factory { return NullFactory }