Imports go.opentelemetry.io/contrib/instrumentation/runtime go.opentelemetry.io/otel go.opentelemetry.io/otel/exporters/stdout/stdoutmetric go.opentelemetry.io/otel/sdk/metric go.opentelemetry.io/otel/sdk/resource go.opentelemetry.io/otel/semconv/v1.17.0 Standard library imports context log os os/signal time