Add Marshaling implementations for exporters (#2578)

* Add Marshaling implementations for exporters

* Changelog

* Fix changelog

Co-authored-by: Aaron Clawson <MadVikingGod@users.noreply.github.com>
Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com>

CHANGELOG.md

@@ -18,6 +18,7 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
   
   If the provided environment variables are invalid (negative), the default values would be used.
 - Rename the `gc` runtime name to `go` (#2560)
+- Log the Exporters configuration in the TracerProviders message. (#2578)
 
 ### Changed
 

exporters/jaeger/jaeger.go

@@ -123,6 +123,15 @@ func (e *Exporter) Shutdown(ctx context.Context) error {
 	return e.uploader.shutdown(ctx)
 }
 
+// MarshalLog is the marshaling function used by the logging system to represent this exporter.
+func (e *Exporter) MarshalLog() interface{} {
+	return struct {
+		Type string
+	}{
+		Type: "jaeger",
+	}
+}
+
 func spanToThrift(ss sdktrace.ReadOnlySpan) *gen.Span {
 	attr := ss.Attributes()
 	tags := make([]*gen.Tag, 0, len(attr))

exporters/otlp/otlptrace/exporter.go

@@ -100,3 +100,14 @@ func NewUnstarted(client Client) *Exporter {
 		client: client,
 	}
 }
+
+// MarshalLog is the marshaling function used by the logging system to represent this exporter.
+func (e *Exporter) MarshalLog() interface{} {
+	return struct {
+		Type   string
+		Client Client
+	}{
+		Type:   "otlptrace",
+		Client: e.client,
+	}
+}

exporters/otlp/otlptrace/otlptracegrpc/client.go

@@ -273,3 +273,14 @@ func throttleDelay(status *status.Status) time.Duration {
 	}
 	return 0
 }
+
+// MarshalLog is the marshaling function used by the logging system to represent this Client.
+func (c *client) MarshalLog() interface{} {
+	return struct {
+		Type     string
+		Endpoint string
+	}{
+		Type:     "otlphttpgrpc",
+		Endpoint: c.endpoint,
+	}
+}

exporters/otlp/otlptrace/otlptracehttp/client.go

@@ -222,6 +222,19 @@ func (d *client) newRequest(body []byte) (request, error) {
 	return req, nil
 }
 
+// MarshalLog is the marshaling function used by the logging system to represent this Client.
+func (d *client) MarshalLog() interface{} {
+	return struct {
+		Type     string
+		Endpoint string
+		Insecure bool
+	}{
+		Type:     "otlphttphttp",
+		Endpoint: d.cfg.Endpoint,
+		Insecure: d.cfg.Insecure,
+	}
+}
+
 // bodyReader returns a closure returning a new reader for buf.
 func bodyReader(buf []byte) func() io.ReadCloser {
 	return func() io.ReadCloser {

exporters/zipkin/zipkin.go

@@ -180,3 +180,14 @@ func (e *Exporter) errf(format string, args ...interface{}) error {
 	e.logf(format, args...)
 	return fmt.Errorf(format, args...)
 }
+
+// MarshalLog is the marshaling function used by the logging system to represent this exporter.
+func (e *Exporter) MarshalLog() interface{} {
+	return struct {
+		Type string
+		URL  string
+	}{
+		Type: "zipkin",
+		URL:  e.url,
+	}
+}

sdk/trace/simple_span_processor.go

@@ -116,7 +116,7 @@ func (ssp *simpleSpanProcessor) ForceFlush(context.Context) error {
 	return nil
 }
 
-// MarshalLog is the marshaling function used by the logging system to represent this exporter.
+// MarshalLog is the marshaling function used by the logging system to represent this Span Processor.
 func (ssp *simpleSpanProcessor) MarshalLog() interface{} {
 	return struct {
 		Type     string