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# Copyright (c) 2016 Uber Technologies, Inc.
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# See the License for the specific language governing permissions and
# limitations under the License.
namespace cpp jaegertracing.thrift
namespace java io.jaegertracing.thriftjava
namespace php Jaeger.Thrift
namespace netcore Jaeger.Thrift
# TagType denotes the type of a Tag's value.
# Tag is a basic strongly typed key/value pair. It has been flattened to reduce the use of pointers in golang
struct Tag {
1: required string key
2: required TagType vType
3: optional string vStr
4: optional double vDouble
5: optional bool vBool
6: optional i64 vLong
7: optional binary vBinary
# Log is a timed even with an arbitrary set of tags.
struct Log {
1: required i64 timestamp
2: required list<Tag> fields
enum SpanRefType { CHILD_OF, FOLLOWS_FROM }
# SpanRef describes causal relationship of the current span to another span (e.g. 'child-of')
struct SpanRef {
1: required SpanRefType refType
2: required i64 traceIdLow
3: required i64 traceIdHigh
4: required i64 spanId
# Span represents a named unit of work performed by a service.
struct Span {
1: required i64 traceIdLow # the least significant 64 bits of a traceID
2: required i64 traceIdHigh # the most significant 64 bits of a traceID; 0 when only 64bit IDs are used
3: required i64 spanId # unique span id (only unique within a given trace)
4: required i64 parentSpanId # since nearly all spans will have parents spans, CHILD_OF refs do not have to be explicit
5: required string operationName
6: optional list<SpanRef> references # causal references to other spans
7: required i32 flags # a bit field used to propagate sampling decisions. 1 signifies a SAMPLED span, 2 signifies a DEBUG span.
8: required i64 startTime
9: required i64 duration
10: optional list<Tag> tags
11: optional list<Log> logs
12: optional bool incomplete # indicates whether this is the final span or an intermediate (incomplete) span
# Process describes the traced process/service that emits spans.
struct Process {
1: required string serviceName
2: optional list<Tag> tags
# Batch is a collection of spans reported out of process.
struct Batch {
1: required Process process
2: required list<Span> spans
# BatchSubmitResponse is the response on submitting a batch.
struct BatchSubmitResponse {
1: required bool ok # The Collector's client is expected to only log (or emit a counter) when not ok equals false
service Collector {
list<BatchSubmitResponse> submitBatches(1: list<Batch> batches)