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tracing: Support dynamically loading tracing libraries. #386

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Merged
htuch merged 9 commits into from
Jan 23, 2018
Merged

tracing: Support dynamically loading tracing libraries. #386

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379ef19
Add options for dynamic OpenTracing driver.
rnburn Jan 3, 2018
6b8c546
Update tracing config comments.
rnburn Jan 3, 2018
d3f97d5
Add v1 documentation for the dynamic tracing driver.
rnburn Jan 3, 2018
450af70
Fix external links.
rnburn Jan 3, 2018
bcc9951
Remove v1 support.
rnburn Jan 9, 2018
0639529
s/DynamicConfig/DynamicOtConfig/
rnburn Jan 11, 2018
87b1e88
Use inline config.
rnburn Jan 22, 2018
4ce80d6
s/envoy.dynamic/envoy.dynamic.ot/
rnburn Jan 23, 2018
c59f3a9
Document DynamicOtConfig.
rnburn Jan 23, 2018
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22 changes: 18 additions & 4 deletions api/trace.proto
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Original file line number Diff line number Diff line change
Expand Up @@ -17,14 +17,15 @@ import "validate/validate.proto";
message Tracing {
message Http {
// The name of the HTTP trace driver to instantiate. The name must match a
// supported HTTP trace driver. *envoy.lightstep* and *envoy.zipkin* are
// built-in trace drivers.
// supported HTTP trace driver. *envoy.lightstep*, *envoy.zipkin*, and
// *envoy.dynamic.ot* are built-in trace drivers.
string name = 1 [(validate.rules).string.min_bytes = 1];

// Trace driver specific configuration which depends on the driver being
// instantiated. See the :ref:`LightstepConfig
// <envoy_api_msg_LightstepConfig>` and :ref:`ZipkinConfig
// <envoy_api_msg_ZipkinConfig>` trace drivers for examples.
// <envoy_api_msg_LightstepConfig>`, :ref:`ZipkinConfig
// <envoy_api_msg_ZipkinConfig>`, and :ref:`DynamicOtConfig
// <envoy_api_msg_DynamicOtConfig>` trace drivers for examples.
google.protobuf.Struct config = 2;
}
// Provides configuration for the HTTP tracer.
Expand Down Expand Up @@ -52,3 +53,16 @@ message ZipkinConfig {
// /api/v1/spans, which is the default value.
string collector_endpoint = 2 [(validate.rules).string.min_bytes = 1];
}

// DynamicOtConfig is used to dynamically load a tracer from a shared library
// that implements the OpenTracing dynamic loading API
// <https://github.com/opentracing/opentracing-cpp>`_.
message DynamicOtConfig {
// Dynamic library implementing the `OpenTracing API
// <https://github.com/opentracing/opentracing-cpp>`_.
string library = 1 [(validate.rules).string.min_bytes = 1];

// The configuration to use when creating a tracer from the given dynamic
// library.
google.protobuf.Struct config = 2;
}