| -- |
| -- 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('util') |
| local Base64 = require('dependencies/base64') |
| |
| 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, |
| network_address, |
| network_address_id = 0, |
| entry_service_instance_id = 0, |
| parent_service_instance_id = 0, |
| entry_endpoint_name, |
| entry_endpoint_id = 0, |
| parent_endpoint_name, |
| parent_endpoint_id = 0, |
| } |
| |
| -- Due to nesting relationship inside Segment/Span/TracingContext at the runtime, |
| -- RefProtocol is created to prepare JSON format serialization. |
| -- Following SkyWalking official trace protocol v2 |
| -- https://github.com/apache/skywalking-data-collect-protocol/blob/master/language-agent-v2/trace.proto |
| local RefProtocol = { |
| -- Constant in LUA, no cross-thread |
| refType = 'CrossProcess', |
| parentTraceSegmentId, |
| parentSpanId, |
| parentServiceInstanceId, |
| networkAddress, |
| networkAddressId, |
| entryServiceInstanceId, |
| entryEndpoint, |
| entryEndpointId, |
| parentEndpoint, |
| parentEndpointId, |
| } |
| |
| function SegmentRef:new() |
| local o = {} |
| setmetatable(o, self) |
| self.__index = self |
| |
| return o |
| end |
| |
| function RefProtocol:new() |
| local o = {} |
| setmetatable(o, self) |
| self.__index = self |
| |
| return o |
| end |
| |
| -- Deserialize value from the propagated context and initialize the SegmentRef |
| function SegmentRef:fromSW6Value(value) |
| local parts = Util: split(value, '-') |
| if #parts ~= 9 then |
| return nil |
| end |
| |
| self.trace_id = Util:formatID(Base64.decode(parts[2])) |
| self.segment_id = Util:formatID(Base64.decode(parts[3])) |
| self.span_id = tonumber(parts[4]) |
| self.parent_service_instance_id = tonumber(parts[5]) |
| self.entry_service_instance_id = tonumber(parts[6]) |
| local peerStr = Base64.decode(parts[7]) |
| if string.sub(peerStr, 1, 1) == '#' then |
| self.network_address = string.sub(peerStr, 2) |
| else |
| self.network_address_id = tonumber(peerStr) |
| end |
| local entryEndpointStr = Base64.decode(parts[8]) |
| if string.sub(entryEndpointStr, 1, 1) == '#' then |
| self.entry_endpoint_name = string.sub(entryEndpointStr, 2) |
| else |
| self.entry_endpoint_id = tonumber(entryEndpointStr) |
| end |
| local parentEndpointStr = Base64.decode(parts[9]) |
| if string.sub(parentEndpointStr, 1, 1) == '#' then |
| self.parent_endpoint_name = string.sub(parentEndpointStr, 2) |
| else |
| self.parent_endpoint_id = tonumber(parentEndpointStr) |
| end |
| |
| return self |
| end |
| |
| -- Return string to represent this ref. |
| function SegmentRef:serialize() |
| local encodedRef = '1' |
| encodedRef = encodedRef .. '-' .. Base64.encode(Util:id2String(self.trace_id)) |
| encodedRef = encodedRef .. '-' .. Base64.encode(Util:id2String(self.segment_id)) |
| encodedRef = encodedRef .. '-' .. self.span_id |
| encodedRef = encodedRef .. '-' .. self.parent_service_instance_id |
| encodedRef = encodedRef .. '-' .. self.entry_service_instance_id |
| |
| local networkAddress |
| if self.network_address_id ~= 0 then |
| networkAddress = self.network_address_id .. '' |
| else |
| networkAddress = '#' .. self.network_address |
| end |
| encodedRef = encodedRef .. '-' .. Base64.encode(networkAddress) |
| |
| local entryEndpoint |
| if self.entry_endpoint_id ~= 0 then |
| entryEndpoint = self.entry_endpoint_id .. '' |
| else |
| entryEndpoint = '#' .. self.entry_endpoint_name |
| end |
| encodedRef = encodedRef .. '-' .. Base64.encode(entryEndpoint) |
| |
| local parentEndpoint |
| if self.parent_endpoint_id ~= 0 then |
| parentEndpoint = self.parent_endpoint_id .. '' |
| else |
| parentEndpoint = '#' .. self.parent_endpoint_name |
| end |
| encodedRef = encodedRef .. '-' .. Base64.encode(parentEndpoint) |
| |
| return encodedRef |
| end |
| |
| -- Return RefProtocol |
| function SegmentRef:transform() |
| local refBuilder = RefProtocol:new() |
| refBuilder.parentTraceSegmentId = Util:id2String(self.segment_id) |
| refBuilder.parentSpanId = self.span_id |
| refBuilder.parentServiceInstanceId = self.parent_service_instance_id |
| refBuilder.networkAddress = self.network_address |
| refBuilder.networkAddressId = self.network_address_id |
| refBuilder.entryServiceInstanceId = self.entry_service_instance_id |
| refBuilder.entryEndpoint = self.entry_endpoint_name |
| refBuilder.entryEndpointId = self.entry_endpoint_id |
| refBuilder.parentEndpoint = self.parent_endpoint_name |
| refBuilder.parentEndpointId = self.parent_endpoint_id |
| return refBuilder |
| end |
| |
| return SegmentRef |