71 lines
2.2 KiB
Go
71 lines
2.2 KiB
Go
package elastic
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import (
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"io"
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"net/url"
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"github.com/opentracing/opentracing-go"
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"github.com/traefik/traefik/v2/pkg/log"
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"github.com/traefik/traefik/v2/pkg/version"
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"go.elastic.co/apm"
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"go.elastic.co/apm/module/apmot"
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"go.elastic.co/apm/transport"
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)
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// Name sets the name of this tracer.
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const Name = "elastic"
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func init() {
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// The APM lib uses the init() function to create a default tracer.
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// So this default tracer must be disabled.
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// https://github.com/elastic/apm-agent-go/blob/8dd383d0d21776faad8841fe110f35633d199a03/tracer.go#L61-L65
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apm.DefaultTracer.Close()
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}
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// Config provides configuration settings for a elastic.co tracer.
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type Config struct {
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ServerURL string `description:"Sets the URL of the Elastic APM server." json:"serverURL,omitempty" toml:"serverURL,omitempty" yaml:"serverURL,omitempty"`
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SecretToken string `description:"Sets the token used to connect to Elastic APM Server." json:"secretToken,omitempty" toml:"secretToken,omitempty" yaml:"secretToken,omitempty"`
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ServiceEnvironment string `description:"Sets the name of the environment Traefik is deployed in, e.g. 'production' or 'staging'." json:"serviceEnvironment,omitempty" toml:"serviceEnvironment,omitempty" yaml:"serviceEnvironment,omitempty" export:"true"`
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}
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// Setup sets up the tracer.
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func (c *Config) Setup(serviceName string) (opentracing.Tracer, io.Closer, error) {
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// Create default transport.
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tr, err := transport.NewHTTPTransport()
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if err != nil {
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return nil, nil, err
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}
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if c.ServerURL != "" {
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serverURL, err := url.Parse(c.ServerURL)
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if err != nil {
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return nil, nil, err
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}
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tr.SetServerURL(serverURL)
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}
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if c.SecretToken != "" {
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tr.SetSecretToken(c.SecretToken)
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}
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tracer, err := apm.NewTracerOptions(apm.TracerOptions{
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ServiceName: serviceName,
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ServiceVersion: version.Version,
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ServiceEnvironment: c.ServiceEnvironment,
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Transport: tr,
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})
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if err != nil {
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return nil, nil, err
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}
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tracer.SetLogger(log.WithoutContext())
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otTracer := apmot.New(apmot.WithTracer(tracer))
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// Without this, child spans are getting the NOOP tracer
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opentracing.SetGlobalTracer(otTracer)
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log.WithoutContext().Debug("Elastic tracer configured")
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return otTracer, nil, nil
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}
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