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authorSebastian Jug <sejug@redhat.com>2018-10-16 16:30:53 -0400
committerSebastian Jug <seb@stianj.ug>2019-02-18 09:57:08 -0500
commit7141f972700ed454438d8539dd0bec79c0b61cf4 (patch)
treebfa2e524b71757a514a02ef68661b46dca9a3dfe /vendor/github.com/opentracing/opentracing-go/globaltracer.go
parente738ef16225395f5f5e4b93ba1a43ae9449ae11b (diff)
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OpenTracing support added to start, stop, run, create, pull, and ps
Drop context.Context field from cli.Context Signed-off-by: Sebastian Jug <sejug@redhat.com>
Diffstat (limited to 'vendor/github.com/opentracing/opentracing-go/globaltracer.go')
-rw-r--r--vendor/github.com/opentracing/opentracing-go/globaltracer.go42
1 files changed, 42 insertions, 0 deletions
diff --git a/vendor/github.com/opentracing/opentracing-go/globaltracer.go b/vendor/github.com/opentracing/opentracing-go/globaltracer.go
new file mode 100644
index 000000000..4f7066a92
--- /dev/null
+++ b/vendor/github.com/opentracing/opentracing-go/globaltracer.go
@@ -0,0 +1,42 @@
+package opentracing
+
+type registeredTracer struct {
+ tracer Tracer
+ isRegistered bool
+}
+
+var (
+ globalTracer = registeredTracer{NoopTracer{}, false}
+)
+
+// SetGlobalTracer sets the [singleton] opentracing.Tracer returned by
+// GlobalTracer(). Those who use GlobalTracer (rather than directly manage an
+// opentracing.Tracer instance) should call SetGlobalTracer as early as
+// possible in main(), prior to calling the `StartSpan` global func below.
+// Prior to calling `SetGlobalTracer`, any Spans started via the `StartSpan`
+// (etc) globals are noops.
+func SetGlobalTracer(tracer Tracer) {
+ globalTracer = registeredTracer{tracer, true}
+}
+
+// GlobalTracer returns the global singleton `Tracer` implementation.
+// Before `SetGlobalTracer()` is called, the `GlobalTracer()` is a noop
+// implementation that drops all data handed to it.
+func GlobalTracer() Tracer {
+ return globalTracer.tracer
+}
+
+// StartSpan defers to `Tracer.StartSpan`. See `GlobalTracer()`.
+func StartSpan(operationName string, opts ...StartSpanOption) Span {
+ return globalTracer.tracer.StartSpan(operationName, opts...)
+}
+
+// InitGlobalTracer is deprecated. Please use SetGlobalTracer.
+func InitGlobalTracer(tracer Tracer) {
+ SetGlobalTracer(tracer)
+}
+
+// IsGlobalTracerRegistered returns a `bool` to indicate if a tracer has been globally registered
+func IsGlobalTracerRegistered() bool {
+ return globalTracer.isRegistered
+}