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45 lines
2 KiB
Lua
45 lines
2 KiB
Lua
-- For OpenTelemetry APM protocol over HTTP, see https://github.com/winlinvip/otel-wireshark-plugin
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--
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-- To apply this wireshark plugin:
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-- mkdir -p ~/.local/lib/wireshark/plugins
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-- ln -sf $(pwd)/otel.lua ~/.local/lib/wireshark/plugins/otel.lua
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-- Download proto files for otel:
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-- git clone https://github.com/open-telemetry/opentelemetry-proto.git
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-- Setup Wireshark `Protobuf search paths` to load the proto files at `Preferences > Protocols > Protobuf`:
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-- /home/winlin/git/opentelemetry-proto
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-- /home/winlin/git/otel-wireshark-plugin/cls
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-- Start capture or parsing file.
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do
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function string_starts_with(str, start)
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return str ~= nil and str:sub(1, #start) == start
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end
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-- See https://gitlab.com/wireshark/wireshark/-/wikis/Protobuf#write-your-own-protobuf-udp-or-tcp-dissectors
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local protobuf_dissector = Dissector.get("protobuf")
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-- Only parsing Protobuf over HTTP, with http uri.
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local f_http_uri = Field.new("http.request.uri")
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local otel_proto = Proto("otel_proto", "Extra analysis of the HTTP protocol");
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function otel_proto.dissector(tvb, pinfo, tree)
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local http_uri = f_http_uri()
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if http_uri == nil then return end
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-- See https://github.com/open-telemetry/opentelemetry-proto/blob/main/opentelemetry/proto/collector/trace/v1/trace_service.proto
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if string_starts_with(http_uri.value, "/v1/traces") then
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pinfo.private["pb_msg_type"] = "message," .. "opentelemetry.proto.collector.trace.v1.ExportTraceServiceRequest"
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pcall(Dissector.call, protobuf_dissector, tvb, pinfo, tree)
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end
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-- See https://cloud.tencent.com/document/api/614/16873
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if string_starts_with(http_uri.value, "/structuredlog") then
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pinfo.private["pb_msg_type"] = "message," .. "cls.LogGroupList"
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pcall(Dissector.call, protobuf_dissector, tvb, pinfo, tree)
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end
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end
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local tbl = DissectorTable.get("media_type")
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tbl:add("application/x-protobuf", otel_proto)
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print("Add application/x-protobuf dissector", otel_proto)
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end
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