How the code is organized:
-
io package: has the wrappers for basic io classes to instrument the bytes read / written with an
io.Reader/io.Writer(event the writer is not currently used in other packages) -
http package: has the common functions used to instrument an http request or response (currently, it only has a way to extract trace attributes).
-
http/client package: this package provides the wrapper for an instrumented http client. It has all the
-
config package: this package contains the configuration definitions for all the krakend-otel library
-
state package: contains exporter instances and the meter and tracer instances created from a configuration (also a global shared state that can be used from anywhere).
-
exporter package: here are the interfaces to implement the metric / traces exporters, as well as specific implementations for some "providers", like prometheus, otel collector, ...
-
lura package: specific Lura middlewares to instruments the
pipeandbackendstages. -
router/gin: contains specifig gin middleware to instrument a gin router.
-
example: an example of how to use the krakend-otel library: check the example documentation for more info.