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The OpenTelemetry plugin is built on top of the Kong Gateway tracing PDK.
It’s possible to customize the spans and add your own spans through the universal tracing PDK.
Create a custom span
The following is an example for adding a custom span using Kong Gateway’s serverless plugin:
-
Create a file named
custom-span.lua
with the following content:-- Modify the root span local root_span = kong.tracing.active_span() root_span:set_attribute("custom.attribute", "custom value") -- Create a custom span local span = kong.tracing.start_span("custom-span") -- Append attributes span:set_attribute("custom.attribute", "custom value") -- Close the span span:finish()
-
Apply the Lua code using the
post-function
plugin using a cURL file upload:curl -i -X POST http://localhost:8001/plugins \ -F "name=post-function" \ -F "config.access[1]=@custom-span.lua" HTTP/1.1 201 Created ...