| -- |
| -- 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. |
| -- |
| local Util = require('skywalking.util') |
| local encode_base64 = Util.encode_base64 |
| local decode_base64 = Util.decode_base64 |
| |
| local _M = {} |
| -- local SegmentRef = { |
| -- -- There is no multiple-threads scenario in the LUA, no only hard coded as CROSS_PROCESS |
| -- type = 'CROSS_PROCESS', |
| -- trace_id, |
| -- segment_id, |
| -- span_id, |
| -- parent_service, |
| -- parent_service_instance, |
| -- parent_endpoint, |
| -- address_used_at_client, |
| -- } |
| |
| function _M.new() |
| return { |
| type = 'CROSS_PROCESS', |
| } |
| end |
| |
| -- Deserialize value from the propagated context and initialize the SegmentRef |
| function _M.fromSW8Value(value) |
| local ref = _M.new() |
| |
| local parts = Util.split(value, '-') |
| if #parts ~= 8 then |
| return nil |
| end |
| |
| ref.trace_id = decode_base64(parts[2]) |
| ref.segment_id = decode_base64(parts[3]) |
| ref.span_id = tonumber(parts[4]) |
| ref.parent_service = decode_base64(parts[5]) |
| ref.parent_service_instance = decode_base64(parts[6]) |
| ref.parent_endpoint = decode_base64(parts[7]) |
| ref.address_used_at_client = decode_base64(parts[8]) |
| |
| return ref |
| end |
| |
| -- Return string to represent this ref. |
| function _M.serialize(ref) |
| local encodedRef = '1' |
| .. '-' .. encode_base64(ref.trace_id) |
| .. '-' .. encode_base64(ref.segment_id) |
| .. '-' .. ref.span_id |
| .. '-' .. encode_base64(ref.parent_service) |
| .. '-' .. encode_base64(ref.parent_service_instance) |
| .. '-' .. encode_base64(ref.parent_endpoint) |
| .. '-' .. encode_base64(ref.address_used_at_client) |
| |
| return encodedRef |
| end |
| |
| -- Due to nesting relationship inside Segment/Span/TracingContext at the runtime, |
| -- RefProtocol 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 RefProtocol = { |
| -- -- Constant in LUA, no cross-thread |
| -- refType = 'CrossProcess', |
| -- traceId, |
| -- parentTraceSegmentId, |
| -- parentSpanId, |
| -- parentService, |
| -- parentServiceInstance, |
| -- parentEndpoint, |
| -- networkAddressUsedAtPeer, |
| -- } |
| -- Return RefProtocol |
| function _M.transform(ref) |
| local refBuilder = {} |
| refBuilder.refType = 'CrossProcess' |
| refBuilder.traceId = ref.trace_id |
| refBuilder.parentTraceSegmentId = ref.segment_id |
| refBuilder.parentSpanId = ref.span_id |
| refBuilder.parentService = ref.parent_service |
| refBuilder.parentServiceInstance = ref.parent_service_instance |
| refBuilder.parentEndpoint = ref.parent_endpoint |
| refBuilder.networkAddressUsedAtPeer = ref.address_used_at_client |
| return refBuilder |
| end |
| |
| return _M |