Support config-driven output formatting

src/configs/index.js

@@ -110,6 +110,10 @@ class ConfigManager {
                 softwareType: nodeName.toLowerCase(),
                 positionVsParent: uiConfig.positionVsParent || 'atEquipment',
                 distance: uiConfig.hasDistance ? uiConfig.distance : undefined
+            },
+            output: {
+                process: uiConfig.processOutputFormat || 'process',
+                dbase: uiConfig.dbaseOutputFormat || 'influxdb'
             }
         };
 

src/helper/formatters/index.js

@@ -13,12 +13,14 @@
 const influxdbFormatter = require('./influxdbFormatter');
 const jsonFormatter = require('./jsonFormatter');
 const csvFormatter = require('./csvFormatter');
+const processFormatter = require('./processFormatter');
 
 // Built-in registry
 const registry = {
   influxdb: influxdbFormatter,
   json: jsonFormatter,
   csv: csvFormatter,
+  process: processFormatter,
 };
 
 /**

src/helper/formatters/processFormatter.js

@@ -0,0 +1,9 @@
+/**
+ * Process formatter
+ * Keeps the existing process-port behaviour: emit only changed fields as an object.
+ */
+function format(_measurement, metadata) {
+  return metadata.fields;
+}
+
+module.exports = { format };

src/helper/outputUtils.js

@@ -1,12 +1,13 @@
+const { getFormatter } = require('./formatters');
+
 //this class will handle the output events for the node red node
 class OutputUtils {
   constructor() {
     this.output = {};
-    this.output['influxdb'] = {};
-    this.output['process'] = {};
   }
 
   checkForChanges(output, format) {
+    this.output[format] = this.output[format] || {};
     const changedFields = {};
     for (const key in output) {
       if (Object.prototype.hasOwnProperty.call(output, key) && output[key] !== this.output[format][key]) {
@@ -27,56 +28,44 @@ class OutputUtils {
   }
 
   formatMsg(output, config, format) {
-  
-    //define emtpy message
       let msg = {};
 
       // Compare output with last output and only include changed values
       const changedFields = this.checkForChanges(output,format);
 
       if (Object.keys(changedFields).length > 0) {
-
-        switch (format) {
-          case 'influxdb': {
-            // Extract the relevant config properties.
-            const relevantConfig = this.extractRelevantConfig(config);
-            // Flatten the tags so that no nested objects are passed on.
-            const flatTags = this.flattenTags(relevantConfig);
-            msg = this.influxDBFormat(changedFields, config, flatTags);
-
-            break;
-          }
-
-          case 'process':
-
-            // Compare output with last output and only include changed values
-            msg = this.processFormat(changedFields,config);
-            //console.log(msg);
-            break;
-
-          default:
-            console.log('Unknown format in output utils');
-            break;
-        }
-        return msg;
-      }
-  }
-  
-
-  influxDBFormat(changedFields, config , flatTags) {
-    // Create the measurement and topic using softwareType and name config.functionality.softwareType + .
         const measurement = config.general.name;
-    const payload = {
-      measurement: measurement,
+        const flatTags = this.flattenTags(this.extractRelevantConfig(config));
+        const formatterName = this.resolveFormatterName(config, format);
+        const formatter = getFormatter(formatterName);
+        const payload = formatter.format(measurement, {
           fields: changedFields,
           tags: flatTags,
-      timestamp: new Date(),
-    };
-
-    const topic = measurement;
-    const msg = { topic: topic, payload: payload };
+          config,
+          channel: format,
+        });
+        msg = this.wrapMessage(measurement, payload);
         return msg;
       }
+  }
+
+  resolveFormatterName(config, channel) {
+    const outputConfig = config.output || {};
+    if (channel === 'process') {
+      return outputConfig.process || 'process';
+    }
+    if (channel === 'influxdb') {
+      return outputConfig.dbase || 'influxdb';
+    }
+    return outputConfig[channel] || channel;
+  }
+
+  wrapMessage(measurement, payload) {
+    return {
+      topic: measurement,
+      payload,
+    };
+  }
 
   flattenTags(obj) {
     const result = {};
@@ -119,15 +108,6 @@ class OutputUtils {
       model: config.asset?.model,
     };
   }
-
-  processFormat(changedFields,config) {
-        // Create the measurement and topic using softwareType and name config.functionality.softwareType + .
-        const measurement = config.general.name;
-        const payload = changedFields;
-        const topic = measurement;
-        const msg = { topic: topic, payload: payload };
-        return msg;
-  }
 }
 
 module.exports = OutputUtils;

test/configManager.test.js

@@ -79,6 +79,7 @@ describe('ConfigManager', () => {
       const result = cm.buildConfig('measurement', uiConfig, 'node-id-1');
       expect(result).toHaveProperty('general');
       expect(result).toHaveProperty('functionality');
+      expect(result).toHaveProperty('output');
     });
 
     it('should populate general.name from uiConfig.name', () => {
@@ -168,6 +169,25 @@ describe('ConfigManager', () => {
       expect(result).toHaveProperty('general');
       expect(result).toHaveProperty('functionality');
     });
+
+    it('should default output formats to process and influxdb', () => {
+      const result = cm.buildConfig('measurement', {}, 'id-1');
+      expect(result.output).toEqual({
+        process: 'process',
+        dbase: 'influxdb',
+      });
+    });
+
+    it('should allow output format overrides from ui config', () => {
+      const result = cm.buildConfig('measurement', {
+        processOutputFormat: 'json',
+        dbaseOutputFormat: 'csv',
+      }, 'id-1');
+      expect(result.output).toEqual({
+        process: 'json',
+        dbase: 'csv',
+      });
+    });
   });
 
   // ── createEndpoint() ─────────────────────────────────────────────────

test/outputUtils.test.js

@@ -0,0 +1,69 @@
+const OutputUtils = require('../src/helper/outputUtils');
+
+describe('OutputUtils', () => {
+  let outputUtils;
+  let config;
+
+  beforeEach(() => {
+    outputUtils = new OutputUtils();
+    config = {
+      general: {
+        name: 'Pump-1',
+        id: 'node-1',
+        unit: 'm3/h',
+      },
+      functionality: {
+        softwareType: 'pump',
+        role: 'test-role',
+      },
+      asset: {
+        supplier: 'EVOLV',
+        type: 'sensor',
+      },
+      output: {
+        process: 'process',
+        dbase: 'influxdb',
+      },
+    };
+  });
+
+  it('keeps legacy process output by default', () => {
+    const msg = outputUtils.formatMsg({ flow: 12.5 }, config, 'process');
+    expect(msg).toEqual({
+      topic: 'Pump-1',
+      payload: { flow: 12.5 },
+    });
+  });
+
+  it('keeps legacy influxdb output by default', () => {
+    const msg = outputUtils.formatMsg({ flow: 12.5 }, config, 'influxdb');
+    expect(msg.topic).toBe('Pump-1');
+    expect(msg.payload).toEqual(expect.objectContaining({
+      measurement: 'Pump-1',
+      fields: { flow: 12.5 },
+      tags: expect.objectContaining({
+        id: 'node-1',
+        name: 'Pump-1',
+        softwareType: 'pump',
+      }),
+    }));
+  });
+
+  it('supports config-driven json formatting on the process channel', () => {
+    config.output.process = 'json';
+    const msg = outputUtils.formatMsg({ flow: 12.5 }, config, 'process');
+    expect(msg.topic).toBe('Pump-1');
+    expect(typeof msg.payload).toBe('string');
+    expect(msg.payload).toContain('"measurement":"Pump-1"');
+    expect(msg.payload).toContain('"flow":12.5');
+  });
+
+  it('supports config-driven csv formatting on the database channel', () => {
+    config.output.dbase = 'csv';
+    const msg = outputUtils.formatMsg({ flow: 12.5 }, config, 'influxdb');
+    expect(msg.topic).toBe('Pump-1');
+    expect(typeof msg.payload).toBe('string');
+    expect(msg.payload).toContain('Pump-1');
+    expect(msg.payload).toContain('flow=12.5');
+  });
+});