[VOL-3142] Update dependency of voltha-lib-go to include log package registration fix
Change-Id: I36890c7aa685e46721b481d5c965f9c0bc86934c
diff --git a/vendor/github.com/uber/jaeger-lib/metrics/factory.go b/vendor/github.com/uber/jaeger-lib/metrics/factory.go
new file mode 100644
index 0000000..0ead061
--- /dev/null
+++ b/vendor/github.com/uber/jaeger-lib/metrics/factory.go
@@ -0,0 +1,78 @@
+// Copyright (c) 2017 Uber Technologies, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package metrics
+
+import (
+ "time"
+)
+
+// NSOptions defines the name and tags map associated with a factory namespace
+type NSOptions struct {
+ Name string
+ Tags map[string]string
+}
+
+// Options defines the information associated with a metric
+type Options struct {
+ Name string
+ Tags map[string]string
+ Help string
+}
+
+// TimerOptions defines the information associated with a metric
+type TimerOptions struct {
+ Name string
+ Tags map[string]string
+ Help string
+ Buckets []time.Duration
+}
+
+// HistogramOptions defines the information associated with a metric
+type HistogramOptions struct {
+ Name string
+ Tags map[string]string
+ Help string
+ Buckets []float64
+}
+
+// Factory creates new metrics
+type Factory interface {
+ Counter(metric Options) Counter
+ Timer(metric TimerOptions) Timer
+ Gauge(metric Options) Gauge
+ Histogram(metric HistogramOptions) Histogram
+
+ // Namespace returns a nested metrics factory.
+ Namespace(scope NSOptions) Factory
+}
+
+// NullFactory is a metrics factory that returns NullCounter, NullTimer, and NullGauge.
+var NullFactory Factory = nullFactory{}
+
+type nullFactory struct{}
+
+func (nullFactory) Counter(options Options) Counter {
+ return NullCounter
+}
+func (nullFactory) Timer(options TimerOptions) Timer {
+ return NullTimer
+}
+func (nullFactory) Gauge(options Options) Gauge {
+ return NullGauge
+}
+func (nullFactory) Histogram(options HistogramOptions) Histogram {
+ return NullHistogram
+}
+func (nullFactory) Namespace(scope NSOptions) Factory { return NullFactory }