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extension.go
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extension.go
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package remotetapextension // import "github.com/open-telemetry/opentelemetry-collector-contrib/extension/remotetapextension"
import (
"context"
"embed"
"errors"
"io/fs"
"net/http"
"go.opentelemetry.io/collector/component"
"go.opentelemetry.io/collector/extension"
)
//go:embed http/*
var httpFS embed.FS
type remoteObserverExtension struct {
config *Config
settings extension.CreateSettings
server *http.Server
}
func (s *remoteObserverExtension) Start(ctx context.Context, host component.Host) error {
htmlContent, err := fs.Sub(httpFS, "html")
if err != nil {
return err
}
mux := http.NewServeMux()
mux.Handle("/", http.FileServer(http.FS(htmlContent)))
s.server, err = s.config.ServerConfig.ToServer(ctx, host, s.settings.TelemetrySettings, mux)
if err != nil {
return err
}
go func() {
err := s.server.ListenAndServe()
if err != nil && !errors.Is(err, http.ErrServerClosed) {
s.settings.TelemetrySettings.ReportStatus(component.NewFatalErrorEvent(err))
}
}()
return nil
}
func (s *remoteObserverExtension) Shutdown(_ context.Context) error {
if s.server == nil {
return nil
}
return s.server.Close()
}