Imports contrib.go.opencensus.io/exporter/ocagent github.com/Azure/go-autorest/tracing go.opencensus.io/plugin/ochttp go.opencensus.io/plugin/ochttp/propagation/tracecontext go.opencensus.io/stats/view go.opencensus.io/trace gopkg.in/yaml.v2 Standard library imports context fmt net/http os