package zipkin
import (
"time"
"github.com/openzipkin/zipkin-go/model"
)
// Span interface as returned by Tracer.StartSpan()
type Span interface {
// Context returns the Span's SpanContext.
Context() model.SpanContext
// SetName updates the Span's name.
SetName(string)
// SetRemoteEndpoint updates the Span's Remote Endpoint.
SetRemoteEndpoint(*model.Endpoint)
// Annotate adds a timed event to the Span.
Annotate(time.Time, string)
// Tag sets Tag with given key and value to the Span. If key already exists in
// the Span the value will be overridden except for error tags where the first
// value is persisted.
Tag(string, string)
// Finish the Span and send to Reporter. If DelaySend option was used at
// Span creation time, Finish will not send the Span to the Reporter. It then
// becomes the user's responsibility to get the Span reported (by using
// span.Flush).
Finish()
// Flush the Span to the Reporter (regardless of being finished or not).
// This can be used if the DelaySend SpanOption was set or when dealing with
// one-way RPC tracing where duration might not be measured.
Flush()
}