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Index ¶
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
func ConvertTimestamp ¶
ConvertTimestamp turns a Zipkin timestamp (a Unix timestamp in microseconds) into a time.Time value.
func GuessAnnotationType ¶
func GuessAnnotationType(v interface{}) interface{}
GuessAnnotationType takes a value and, if it is a string, turns it into a bool, int64 or float64 value when possible. This is a workaround for the fact that Zipkin v1 BinaryAnnotation values are always transmitted as strings. (See e.g. the Zipkin API spec here: https://github.com/openzipkin/zipkin-api/blob/72280f3/zipkin-api.yaml#L235-L245)
However it considers the possibility that the value is not a string in case the BinaryAnnotation does not implement the Zipkin API v1 spec. In this case it will just return the same value, without modifying it. See this issue for such an example: https://github.com/honeycombio/honeycomb-opentracing-proxy/issues/37
Types ¶
type CoreSpanMetadata ¶
type CoreSpanMetadata struct {
TraceID string `json:"traceId"`
TraceIDAsInt int64 `json:"-"` // Zipkin trace ID as integer; not added to events, but used for sampling decisions
Name string `json:"name"`
ID string `json:"id"`
ParentID string `json:"parentId,omitempty"`
ServiceName string `json:"serviceName,omitempty"`
HostIPv4 string `json:"hostIPv4,omitempty"`
Port int `json:"port,omitempty"`
Debug bool `json:"debug,omitempty"`
DurationMs float64 `json:"durationMs,omitempty"`
}
CoreSpanMetadata is the subset of span data that can be added directly into a libhoney event. Annotations, BinaryAnnotations and Timestamp need special handling.
type Span ¶
type Span struct {
CoreSpanMetadata
Annotations []*annotation `json:"annotations,omitempty"` // TODO lift annotation struct definition into this file
BinaryAnnotations map[string]interface{} `json:"binaryAnnotations,omitempty"`
Timestamp time.Time `json:"timestamp,omitempty"`
}
Span represents a Zipkin span in a format more useful for consumption in Honeycomb.
- BinaryAnnotations are turned into a key: value map.
- Endpoint values in BinaryAnnotations are lifted into top-level HostIPv4/Port/ServiceName values on the span.
- Timestamp and Duration values are turned into time.Time and millisecond values, respectively.
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