| -- |
| -- Licensed to the Apache Software Foundation (ASF) under one or more |
| -- contributor license agreements. See the NOTICE file distributed with |
| -- this work for additional information regarding copyright ownership. |
| -- The ASF licenses this file to You 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 |
| -- |
| -- http://www.apache.org/licenses/LICENSE-2.0 |
| -- |
| -- Unless required by applicable law or agreed to in writing, software |
| -- distributed under the License is distributed on an "AS IS" BASIS, |
| -- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| -- See the License for the specific language governing permissions and |
| -- limitations under the License. |
| -- |
| |
| -- Segment represents a finished tracing context |
| -- Including all information to send to the SkyWalking OAP server. |
| local Span = require('span') |
| |
| local _M = {} |
| -- local Segment = { |
| -- trace_id, |
| -- segment_id, |
| -- service, |
| -- service_instance, |
| -- spans, |
| -- } |
| |
| -- Due to nesting relationship inside Segment/Span/TracingContext at the runtime, |
| -- SegmentProtocol is created to prepare JSON format serialization. |
| -- Following SkyWalking official trace protocol v3 |
| -- https://github.com/apache/skywalking-data-collect-protocol/blob/master/language-agent/Tracing.proto |
| -- local SegmentProtocol = { |
| -- traceId, |
| -- traceSegmentId, |
| -- service, |
| -- serviceInstance, |
| -- spans, |
| -- } |
| |
| -- Return SegmentProtocol |
| function _M.transform(segment) |
| local segmentBuilder = {} |
| segmentBuilder.traceId = segment.trace_id |
| segmentBuilder.traceSegmentId = segment.segment_id |
| segmentBuilder.service = segment.service |
| segmentBuilder.serviceInstance = segment.service_instance |
| |
| segmentBuilder.spans = {} |
| |
| if segment.spans ~= nil and #segment.spans > 0 then |
| for i, span in ipairs(segment.spans) |
| do |
| segmentBuilder.spans[#segmentBuilder.spans + 1] = Span.transform(span) |
| end |
| end |
| |
| return segmentBuilder |
| end |
| |
| return _M |