feat(oncall): add escalationChain constructor

grafanaplane/main.libsonnet

@@ -364,6 +364,31 @@ local raw = import './zz/main.libsonnet';
 
   },
 
+  oncall: {
+    '#': d.package.newSub('oncall', ''),
+    escalationChain: {
+      local escalationChain = raw.oncall.v1alpha1.escalationChain,
+      '#new': d.func.new(
+        |||
+          `new` creates an Escalation Chain. The `name` is a display-friendly
+          string, and `resourceId` defaults to a slug-ified version of it.
+          `providerName` is the resource name (`myprovider.metadata.name`) of
+          the Provider.
+        |||,
+        [
+          d.argument.new('name', d.T.string),
+          d.argument.new('providerName', d.T.string),
+          d.argument.new('resourceId', d.T.string, default='rfc1123(name)'),
+        ]
+      ),
+      new(name, providerName, teamId=null, resourceId=null)::
+        local id = if resourceId != null then resourceId else xtd.ascii.stringToRFC1123(name);
+        escalationChain.new(id)
+        + escalationChain.spec.parameters.providerConfigRef.withName(providerName)
+        + escalationChain.spec.parameters.forProvider.withName(name),
+    },
+  },
+
   sm: {
     '#': d.package.newSub('sm', ''),