diff --git a/marklogic-data-hub/src/main/resources/ml-modules/root/data-hub/5/impl/debug.sjs b/marklogic-data-hub/src/main/resources/ml-modules/root/data-hub/5/impl/debug.sjs
new file mode 100644
index 0000000000..cdbf07b64d
--- /dev/null
+++ b/marklogic-data-hub/src/main/resources/ml-modules/root/data-hub/5/impl/debug.sjs
@@ -0,0 +1,80 @@
+/**
+  Copyright 2012-2019 MarkLogic Corporation
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+     http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+*/
+'use strict';
+
+export class Debug {
+    constructor(config) {
+      this.logLevel   = config && config.logLevel || 'default';
+      this.logLevels  = ['default','notice','trace','info'];
+      this.logTypes   = ['error','warning','notice','trace','info'];
+    }
+  
+    _addMetadata(payload) {
+      if (payload) {
+        payload.currentDateTime = fn.currentDateTime();
+        payload.user = xdmp.getCurrentUser();
+        payload.serverID = xdmp.server();
+        payload.serverName = xdmp.serverName(payload.serverID);
+        payload.dbID = xdmp.database();
+        payload.dbName = xdmp.databaseName(payload.dbID);
+        payload.modulesDbID = xdmp.modulesDatabase();
+        payload.modulesDbName = xdmp.databaseName(payload.modulesDbID);
+      }
+      return payload;
+    }
+
+    _canLog(payload) {
+      let logLevel = this.logLevel;
+      let typeCheck = {
+        'error': function () {
+          return ['default','notice','trace','info'].includes(logLevel);
+        },
+        'warning': function () {
+          return ['default','notice','trace','info'].includes(logLevel);
+        },
+        'notice': function () {
+          return ['notice','trace','info'].includes(logLevel);
+        },
+        'trace': function () {
+          return ['trace','info'].includes(logLevel);
+        },
+        'info': function () {
+          return ['info'].includes(logLevel);
+        }
+      };
+      return payload.type ? typeCheck[payload.type] && typeCheck[payload.type]() : false;
+    }
+  
+    _log(payload) {
+      payload = this._addMetadata(payload);
+      xdmp.log(JSON.stringify(payload));  // logging complete JSON
+      return payload;
+    }
+  
+    log(payload) {
+      return (this._canLog(payload)) ? 
+        this._log(payload) : 
+        new Error('Log level "' + this.logLevel + '" does not have permission to log type: "' + payload.type + '"' || '[unknown]');
+      
+//      when eventually logging to the database, we
+//      should return a Promise to be resolved after 
+//      payload has been saved to DB.
+      
+//      return new Promise((resolve, reject) => {
+//        resolve(payload);
+//      })
+    }
+}
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