1 files changed, 26 insertions, 0 deletions
diff --git a/trace/tee.ha b/trace/tee.ha
new file mode 100644
index 0000000..53bd9ea
--- /dev/null
+++ b/trace/tee.ha
@@ -0,0 +1,26 @@
+use fmt;
+
+export type teetracer = struct {
+	tracer,
+	sinks: []*tracer,
+};
+
+export fn tee(sinks: *tracer...) teetracer = {
+	return teetracer {
+		log = &tee_log,
+		sinks = sinks,
+	};
+};
+
+export fn tee_log(
+	tr: *tracer,
+	ctx: nullable *context,
+	lvl: level,
+	fmt: str,
+	fields: fmt::field...
+) void = {
+	const tr = tr: *teetracer;
+	for (let i = 0z; i < len(tr.sinks); i += 1) {
+		log(tr.sinks[i], ctx, lvl, fmt, fields...);
+	};
+};