Imports golang.org/x/oauth2/google gopkg.in/DataDog/dd-trace-go.v1/contrib/net/http gopkg.in/DataDog/dd-trace-go.v1/ddtrace/ext gopkg.in/DataDog/dd-trace-go.v1/ddtrace gopkg.in/DataDog/dd-trace-go.v1/contrib/google.golang.org/api/internal Standard library imports context math net/http regexp