Improvements for Supplier replication

suppliers/monkey-patch.js

@@ -0,0 +1,38 @@
+const deploy = require("@sap/cds/lib/deploy");
+
+const DEBUG = (...args) => console.log(...args);
+
+deploy.exclude_external_entities_in = function (csn, _bound) {
+  // NOSONAR
+  for (let [each, { service = each, model, credentials }] of Object.entries(
+    cds.requires
+  )) {
+    if (!model) continue; //> not for internal services like cds.requires.odata
+    if (_bound && !credentials) continue;
+    DEBUG && DEBUG("excluding external entities for", service, "...");
+    const prefix = service + ".";
+    for (let each in csn.definitions) {
+      const def = csn.definitions[each];
+      if (def["@cds.persistence.table"] === true) continue;
+      if (each.startsWith(prefix)) {
+        DEBUG && DEBUG("excluding external entity", each);
+        _exclude(each);
+      }
+    }
+  }
+  return csn;
+
+  function _exclude(each) {
+    const def = csn.definitions[each];
+    if (def.kind !== "entity") return;
+    def["@cds.persistence.skip"] = true;
+    // propagate to all views...
+    for (let other in csn.definitions) {
+      const d = csn.definitions[other];
+      // do not exclude replica table
+      if (d["@cds.persistence.table"] === true) continue;
+      const p = (d.query && d.query.SELECT) || d.projection;
+      if (p && p.from.ref && p.from.ref[0] === each) _exclude(other);
+    }
+  }
+};