Add LabelProvider, rename {=> Structured}ParameterProvider.
Change-Id: Ib4902a35e22d023fc7e8dda4ca73ec2aab50695d
diff --git a/runtime/src/main/java/eu/mulk/quarkus/googlecloud/jsonlogging/LabelProvider.java b/runtime/src/main/java/eu/mulk/quarkus/googlecloud/jsonlogging/LabelProvider.java
new file mode 100644
index 0000000..ef31bcc
--- /dev/null
+++ b/runtime/src/main/java/eu/mulk/quarkus/googlecloud/jsonlogging/LabelProvider.java
@@ -0,0 +1,16 @@
+package eu.mulk.quarkus.googlecloud.jsonlogging;
+
+import java.util.Collection;
+
+/**
+ * A user-supplied provider for {@link Label}s.
+ *
+ * <p>Any CDI beans registered under this class are applied to each log entry that is logged.
+ *
+ * @see StructuredParameterProvider
+ */
+public interface LabelProvider {
+
+ /** Provides a collection of {@link Label}s to add to each log entry that is logged. */
+ Collection<Label> getLabels();
+}