snapshot of https://github.com/ThreeDotsLabs/watermill.git (master, 2026-09-15; blobs > 131072B omitted)

message/metadata.go

@@ -0,0 +1,18 @@
+package message
+
+// Metadata is sent with every message to provide extra context without unmarshaling the message payload.
+type Metadata map[string]string
+
+// Get returns the metadata value for the given key. If the key is not found, an empty string is returned.
+func (m Metadata) Get(key string) string {
+	if v, ok := m[key]; ok {
+		return v
+	}
+
+	return ""
+}
+
+// Set sets the metadata key to value.
+func (m Metadata) Set(key, value string) {
+	m[key] = value
+}