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receiver.go
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/
receiver.go
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package filereceiver // import "github.com/open-telemetry/opentelemetry-collector-contrib/receiver/filereceiver"
import (
"context"
"errors"
"fmt"
"io"
"os"
"go.opentelemetry.io/collector/component"
"go.opentelemetry.io/collector/consumer"
"go.uber.org/zap"
)
type fileReceiver struct {
consumer consumer.Metrics
logger *zap.Logger
cancel context.CancelFunc
path string
throttle float64
}
func (r *fileReceiver) Start(ctx context.Context, _ component.Host) error {
ctx, r.cancel = context.WithCancel(ctx)
file, err := os.Open(r.path)
if err != nil {
return fmt.Errorf("failed to open file %q: %w", r.path, err)
}
fr := newFileReader(r.consumer, file, newReplayTimer(r.throttle))
go func() {
err := fr.readAll(ctx)
if err != nil {
if errors.Is(err, io.EOF) {
r.logger.Debug("EOF reached")
} else {
r.logger.Error("failed to read input file", zap.Error(err))
}
}
}()
return nil
}
func (r *fileReceiver) Shutdown(_ context.Context) error {
if r.cancel != nil {
r.cancel()
}
return nil
}