Imports
- knative.dev/pkg/logging
- knative.dev/pkg/metrics
- go.uber.org/zap
- github.com/google/knative-gcp/pkg/tracing
- cloud.google.com/go/compute/metadata
- github.com/kelseyhightower/envconfig
- github.com/google/knative-gcp/pkg/pubsub/adapter
- knative.dev/pkg/signals
- knative.dev/eventing/pkg/tracing