Add error handler to replace global otel error handler

pkg/traces/exporter/error_handler.go

@@ -0,0 +1,23 @@
+package exporter
+
+import (
+	"github.com/go-kit/kit/log"
+	"github.com/go-kit/kit/log/level"
+)
+
+// errorHandler implements the go.opentelemetry.io/otel/internal/global.ErrorHandler interface.
+// We use our own error handler instead of the default global one to avoid errors being printed
+// to our logs without JSON formatting and without appropriate log level consideration.
+type errorHandler struct {
+	logger log.Logger
+}
+
+func newErrorHandler(logger log.Logger) *errorHandler {
+	return &errorHandler{
+		logger: logger,
+	}
+}
+
+func (e *errorHandler) Handle(err error) {
+	level.Debug(e.logger).Log("msg", "tracing error", "err", err)
+}

pkg/traces/exporter/exporter.go

@@ -96,6 +96,11 @@ func NewTraceExporter(ctx context.Context, k types.Knapsack, client osquery.Quer
 		return t, nil
 	}
 
+	// Set our own error handler to avoid otel printing errors
+	otel.SetErrorHandler(newErrorHandler(
+		log.With(logger, "component", "trace_exporter"),
+	))
+
 	t.addDeviceIdentifyingAttributes()
 
 	// Set the provider with as many resource attributes as we can get immediately