add layer levels query (#129)
diff --git a/hierarchy.graphqls b/hierarchy.graphqls
index 1432e22..af99ae7 100644
--- a/hierarchy.graphqls
+++ b/hierarchy.graphqls
@@ -51,9 +51,19 @@
relations: [HierarchyInstanceRelation!]!
}
+type LayerLevel {
+ # The layer name.
+ layer: String!
+ # The layer level.
+ # The level of the upper service should greater than the level of the lower service.
+ level: Int!
+}
+
extend type Query {
# Query the service hierarchy, based on the given service. Will recursively return all related layers services in the hierarchy.
getServiceHierarchy(serviceId: ID!, layer: String!): ServiceHierarchy!
# Query the instance hierarchy, based on the given instance. Will return all direct related layers instances in the hierarchy, no recursive.
getInstanceHierarchy(instanceId: ID!, layer: String!): InstanceHierarchy!
+ # List layer hierarchy levels. The layer levels are defined in the `hierarchy-definition.yml`.
+ listLayerLevels: [LayerLevel!]!
}
