api: add query templates

api/prepared_query.go

@@ -45,6 +45,17 @@ type ServiceQuery struct {
 	Tags []string
 }
 
+// QueryTemplate carries the arguments for creating a templated query.
+type QueryTemplate struct {
+	// Type specifies the type of the query template. Currently only
+	// "name_prefix_match" is supported. This field is required.
+	Type string
+
+	// Regexp allows specifying a regex pattern to match against the name
+	// of the query being executed.
+	Regexp string
+}
+
 // PrepatedQueryDefinition defines a complete prepared query.
 type PreparedQueryDefinition struct {
 	// ID is this UUID-based ID for the query, always generated by Consul.
@@ -72,6 +83,11 @@ type PreparedQueryDefinition struct {
 	// DNS has options that control how the results of this query are
 	// served over DNS.
 	DNS QueryDNSOptions
+
+	// Template is used to pass through the arguments for creating a
+	// prepared query with an attached template. If a template is given,
+	// interpolations are possible in other struct fields.
+	Template QueryTemplate
 }
 
 // PreparedQueryExecuteResponse has the results of executing a query.