Adding upstream version 1.34.4.

Signed-off-by: Daniel Baumann <daniel@debian.org>

plugins/inputs/zipkin/convert.go

@@ -0,0 +1,79 @@
+package zipkin
+
+import (
+	"strings"
+
+	"github.com/influxdata/telegraf"
+	"github.com/influxdata/telegraf/plugins/inputs/zipkin/trace"
+)
+
+// lineProtocolConverter implements the recorder interface;
+// it is a type meant to encapsulate the storage of zipkin tracing data in telegraf as line protocol.
+type lineProtocolConverter struct {
+	acc telegraf.Accumulator
+}
+
+// newLineProtocolConverter returns an instance of lineProtocolConverter that will add to the given telegraf.Accumulator
+func newLineProtocolConverter(acc telegraf.Accumulator) *lineProtocolConverter {
+	return &lineProtocolConverter{
+		acc: acc,
+	}
+}
+
+// record is lineProtocolConverter's implementation of the record method of the recorder interface;
+// it takes a trace as input, and adds it to an internal telegraf.Accumulator.
+func (l *lineProtocolConverter) record(t trace.Trace) error {
+	for _, s := range t {
+		fields := map[string]interface{}{
+			"duration_ns": s.Duration.Nanoseconds(),
+		}
+
+		tags := map[string]string{
+			"id":           s.ID,
+			"parent_id":    s.ParentID,
+			"trace_id":     s.TraceID,
+			"name":         formatName(s.Name),
+			"service_name": formatName(s.ServiceName),
+		}
+		l.acc.AddFields("zipkin", fields, tags, s.Timestamp)
+
+		for _, a := range s.Annotations {
+			tags := map[string]string{
+				"id":            s.ID,
+				"parent_id":     s.ParentID,
+				"trace_id":      s.TraceID,
+				"name":          formatName(s.Name),
+				"service_name":  formatName(a.ServiceName),
+				"annotation":    a.Value,
+				"endpoint_host": a.Host,
+			}
+			l.acc.AddFields("zipkin", fields, tags, s.Timestamp)
+		}
+
+		for _, b := range s.BinaryAnnotations {
+			tags := map[string]string{
+				"id":             s.ID,
+				"parent_id":      s.ParentID,
+				"trace_id":       s.TraceID,
+				"name":           formatName(s.Name),
+				"service_name":   formatName(b.ServiceName),
+				"annotation":     b.Value,
+				"endpoint_host":  b.Host,
+				"annotation_key": b.Key,
+			}
+			l.acc.AddFields("zipkin", fields, tags, s.Timestamp)
+		}
+	}
+
+	return nil
+}
+
+func (l *lineProtocolConverter) error(err error) {
+	l.acc.AddError(err)
+}
+
+// formatName formats name and service name Zipkin forces span and service names to be lowercase:
+// https://github.com/openzipkin/zipkin/pull/805
+func formatName(name string) string {
+	return strings.ToLower(name)
+}