traefik/pkg/tracing/instana/instana.go

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package instana
import (
"io"
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"github.com/containous/traefik/pkg/log"
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instana "github.com/instana/go-sensor"
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"github.com/opentracing/opentracing-go"
)
// Name sets the name of this tracer
const Name = "instana"
// Config provides configuration settings for a instana tracer
type Config struct {
LocalAgentHost string `description:"Set instana-agent's host that the reporter will used." export:"false"`
LocalAgentPort int `description:"Set instana-agent's port that the reporter will used." export:"false"`
LogLevel string `description:"Set instana-agent's log level. ('error','warn','info','debug')" export:"false"`
}
// Setup sets up the tracer
func (c *Config) Setup(serviceName string) (opentracing.Tracer, io.Closer, error) {
// set default logLevel
logLevel := instana.Info
// check/set logLevel overrides
switch c.LogLevel {
case "error":
logLevel = instana.Error
case "warn":
logLevel = instana.Warn
case "debug":
logLevel = instana.Debug
}
tracer := instana.NewTracerWithOptions(&instana.Options{
Service: serviceName,
LogLevel: logLevel,
AgentPort: c.LocalAgentPort,
AgentHost: c.LocalAgentHost,
})
// Without this, child spans are getting the NOOP tracer
opentracing.SetGlobalTracer(tracer)
log.WithoutContext().Debug("Instana tracer configured")
return tracer, nil, nil
}