docs: add CLAUDE.md with S88 classification and superproject rule reference

References the flow-layout rule set in the EVOLV superproject
(.claude/rules/node-red-flow-layout.md) so Claude Code sessions working
in this repo know the S88 level, colour, and placement lane for this node.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

CLAUDE.md

@@ -0,0 +1,23 @@
+# dashboardAPI — Claude Code context
+
+InfluxDB telemetry and FlowFuse chart endpoints.
+Part of the [EVOLV](https://gitea.wbd-rd.nl/RnD/EVOLV) wastewater-automation platform.
+
+## S88 classification
+
+| Level | Colour | Placement lane |
+|---|---|---|
+| **Utility (no S88 level)** | `none` | n/a |
+
+## Flow layout rules
+
+When wiring this node into a multi-node demo or production flow, follow the
+placement rule set in the **EVOLV superproject**:
+
+> `.claude/rules/node-red-flow-layout.md` (in the EVOLV repo root)
+
+Key points for this node:
+- Place on lane **n/a** (x-position per the lane table in the rule).
+- Stack same-level siblings vertically.
+- Parent/children sit on adjacent lanes (children one lane left, parent one lane right).
+- Wrap in a Node-RED group box coloured `none` (Utility (no S88 level)).

src/nodeClass.js

@@ -1,10 +1,6 @@
-const { outputUtils } = require('generalFunctions');
+const { configManager } = require('generalFunctions');
-const Specific = require('./specificClass');
+const DashboardApi = require('./specificClass');
 
-/**
- * Node-RED wrapper for dashboard generation requests.
- * It listens for `registerChild` messages and emits Grafana upsert requests.
- */
 class nodeClass {
   constructor(uiConfig, RED, nodeInstance, nameOfNode) {
     this.node = nodeInstance;
@@ -20,13 +16,11 @@ class nodeClass {
   }
 
   _loadConfig(uiConfig) {
-    this.config = {
+    const cfgMgr = new configManager();
-      general: {
+    this.config = cfgMgr.buildConfig(this.name, uiConfig, this.node.id, {
-        name: uiConfig.name || this.name,
+      functionality: {
-        logging: {
+        softwareType: this.name.toLowerCase(),
-          enabled: uiConfig.enableLog,
+        role: 'auto ui generator',
-          logLevel: uiConfig.logLevel || 'info',
-        },
       },
       grafanaConnector: {
         protocol: uiConfig.protocol || 'http',
@@ -35,16 +29,44 @@ class nodeClass {
         bearerToken: uiConfig.bearerToken || '',
       },
       defaultBucket: uiConfig.defaultBucket || process.env.INFLUXDB_BUCKET || '',
-    };
+    });
-
-    this._output = new outputUtils();
   }
 
   _setupSpecificClass() {
-    this.source = new Specific(this.config);
+    this.source = new DashboardApi(this.config);
     this.node.source = this.source;
   }
 
+  _resolveChildNode(childId) {
+    const runtimeNode = this.RED.nodes.getNode(childId);
+    if (runtimeNode?.source?.config) {
+      return runtimeNode;
+    }
+
+    const flowNode = this.node._flow?.getNode?.(childId);
+    if (flowNode?.source?.config) {
+      return flowNode;
+    }
+
+    return runtimeNode || flowNode || null;
+  }
+
+  _resolveChildSource(payload) {
+    if (payload?.source?.config) {
+      return payload.source;
+    }
+
+    if (payload?.config) {
+      return { config: payload.config };
+    }
+
+    if (typeof payload === 'string') {
+      return this._resolveChildNode(payload)?.source || null;
+    }
+
+    return null;
+  }
+
   _attachInputHandler() {
     this.node.on('input', async (msg, send, done) => {
       try {
@@ -53,16 +75,11 @@ class nodeClass {
           return;
         }
 
-        const childId = msg.payload;
+        const childSource = this._resolveChildSource(msg.payload);
-        const childObj = this.RED.nodes.getNode(childId);
-        const childSource = childObj?.source;
         if (!childSource?.config) {
-          this.node.warn(`registerChild skipped: missing child source/config for id=${childId}`);
+          throw new Error('Missing or invalid child node');
-          if (typeof done === 'function') done();
-          return;
         }
 
-        // Generate one dashboard for the root source and optionally its registered children.
         const dashboards = this.source.generateDashboardsForGraph(childSource, {
           includeChildren: Boolean(msg.includeChildren ?? true),
         });
@@ -72,19 +89,23 @@ class nodeClass {
           Accept: 'application/json',
           'Content-Type': 'application/json',
         };
+
         if (this.config.grafanaConnector.bearerToken) {
           headers.Authorization = `Bearer ${this.config.grafanaConnector.bearerToken}`;
         }
 
         for (const dash of dashboards) {
-          // Forward dashboard definitions to an HTTP request node configured for Grafana API.
-          const payload = this.source.buildUpsertRequest({ dashboard: dash.dashboard, folderId: 0, overwrite: true });
           send({
-            topic: 'grafana.dashboard.upsert',
+            ...msg,
+            topic: 'create',
             url,
             method: 'POST',
             headers,
-            payload,
+            payload: this.source.buildUpsertRequest({
+              dashboard: dash.dashboard,
+              folderId: 0,
+              overwrite: true,
+            }),
             meta: {
               nodeId: dash.nodeId,
               softwareType: dash.softwareType,
@@ -98,7 +119,7 @@ class nodeClass {
       } catch (error) {
         this.node.status({ fill: 'red', shape: 'ring', text: 'dashboardapi error' });
         this.node.error(error?.message || error, msg);
-        if (typeof done === 'function') done();
+        if (typeof done === 'function') done(error);
       }
     });
   }

test/basic/structure-module-load.basic.test.js

@@ -1,8 +1,7 @@
-const test = require('node:test');
+describe('dashboardAPI basic structure', () => {
-const assert = require('node:assert/strict');
+  it('module load smoke', () => {
-
+    expect(() => {
-test('dashboardAPI module load smoke', () => {
-  assert.doesNotThrow(() => {
       require('../../dashboardapi.js');
+    }).not.toThrow();
   });
 });

test/dashboardapi.test.js

@@ -1,6 +1,3 @@
-const test = require('node:test');
-const assert = require('node:assert/strict');
-
 const DashboardApi = require('../src/specificClass');
 
 function makeNodeSource({ id, name, softwareType, positionVsParent, children = [] }) {
@@ -24,7 +21,8 @@ function makeNodeSource({ id, name, softwareType, positionVsParent, children = [
   };
 }
 
-test('buildDashboard sets id=null, stable uid, title, measurement and bucket vars', () => {
+describe('DashboardApi specificClass', () => {
+  it('buildDashboard sets id=null, stable uid, title, measurement and bucket vars', () => {
     const api = new DashboardApi({
       general: { name: 'dashboardapi-test', logging: { enabled: false, logLevel: 'error' } },
       grafanaConnector: { protocol: 'http', host: 'localhost', port: 3000, bearerToken: '' },
@@ -39,20 +37,20 @@ test('buildDashboard sets id=null, stable uid, title, measurement and bucket var
 
     const dash = api.buildDashboard({ nodeConfig: nodeSource.config, positionVsParent: 'downstream' });
 
-  assert.equal(dash.dashboard.id, null);
+    expect(dash.dashboard.id).toBeNull();
-  assert.equal(dash.uid.length, 12);
+    expect(dash.uid).toHaveLength(12);
-  assert.equal(dash.dashboard.uid, dash.uid);
+    expect(dash.dashboard.uid).toBe(dash.uid);
-  assert.equal(dash.dashboard.title, 'PT-1');
+    expect(dash.dashboard.title).toBe('PT-1');
 
     const templ = dash.dashboard.templating.list;
     const measurement = templ.find((v) => v.name === 'measurement');
     const bucket = templ.find((v) => v.name === 'bucket');
 
-  assert.equal(measurement.current.value, 'measurement_m-1');
+    expect(measurement.current.value).toBe('measurement_m-1');
-  assert.equal(bucket.current.value, 'lvl3');
+    expect(bucket.current.value).toBe('lvl3');
   });
 
-test('generateDashboardsForGraph returns root + direct child dashboards and adds links', () => {
+  it('generateDashboardsForGraph returns root + direct child dashboards and adds links', () => {
     const api = new DashboardApi({
       general: { name: 'dashboardapi-test', logging: { enabled: false, logLevel: 'error' } },
       grafanaConnector: { protocol: 'http', host: 'localhost', port: 3000, bearerToken: '' },
@@ -74,9 +72,10 @@ test('generateDashboardsForGraph returns root + direct child dashboards and adds
     });
 
     const results = api.generateDashboardsForGraph(root, { includeChildren: true });
-  assert.equal(results.length, 2);
+    expect(results).toHaveLength(2);
 
     const rootDash = results[0];
-  assert.ok(Array.isArray(rootDash.dashboard.links));
+    expect(Array.isArray(rootDash.dashboard.links)).toBe(true);
-  assert.ok(rootDash.dashboard.links.some((l) => l.url && l.url.includes('/d/')));
+    expect(rootDash.dashboard.links.some((l) => l.url && l.url.includes('/d/'))).toBe(true);
+  });
 });

test/edge/structure-examples-node-type.edge.test.js

@@ -1,11 +1,11 @@
-const test = require('node:test');
-const assert = require('node:assert/strict');
 const fs = require('node:fs');
 const path = require('node:path');
 
 const flow = JSON.parse(fs.readFileSync(path.resolve(__dirname, '../../examples/basic.flow.json'), 'utf8'));
 
-test('basic example includes node type dashboardapi', () => {
+describe('dashboardAPI edge example structure', () => {
+  it('basic example includes node type dashboardapi', () => {
   const count = flow.filter((n) => n && n.type === 'dashboardapi').length;
-  assert.equal(count >= 1, true);
+    expect(count).toBeGreaterThanOrEqual(1);
+  });
 });

test/integration/structure-examples.integration.test.js

@@ -1,5 +1,3 @@
-const test = require('node:test');
-const assert = require('node:assert/strict');
 const fs = require('node:fs');
 const path = require('node:path');
 
@@ -9,15 +7,17 @@ function loadJson(file) {
   return JSON.parse(fs.readFileSync(path.join(dir, file), 'utf8'));
 }
 
-test('examples package exists for dashboardAPI', () => {
+describe('dashboardAPI integration examples', () => {
+  it('examples package exists for dashboardAPI', () => {
     for (const file of ['README.md', 'basic.flow.json', 'integration.flow.json', 'edge.flow.json']) {
-    assert.equal(fs.existsSync(path.join(dir, file)), true, file + ' missing');
+      expect(fs.existsSync(path.join(dir, file))).toBe(true);
     }
   });
 
-test('example flows are parseable arrays for dashboardAPI', () => {
+  it('example flows are parseable arrays for dashboardAPI', () => {
     for (const file of ['basic.flow.json', 'integration.flow.json', 'edge.flow.json']) {
       const parsed = loadJson(file);
-    assert.equal(Array.isArray(parsed), true);
+      expect(Array.isArray(parsed)).toBe(true);
     }
   });
+});

test/nodeClass.test.js

@@ -0,0 +1,179 @@
+const NodeClass = require('../src/nodeClass');
+
+jest.mock('../src/specificClass', () => {
+  return jest.fn().mockImplementation(() => ({
+    logger: {
+      warn: jest.fn(),
+    },
+    generateDashboardsForGraph: jest.fn(() => [{
+      dashboard: { title: 'ok' },
+      nodeId: 'child-node-id',
+      softwareType: 'measurement',
+      uid: 'child-uid',
+      title: 'ok',
+    }]),
+    buildUpsertRequest: jest.fn(({ dashboard, folderId, overwrite }) => ({
+      dashboard,
+      folderId,
+      overwrite,
+    })),
+    grafanaUpsertUrl: jest.fn(() => 'http://grafana:3000/api/dashboards/db'),
+  }));
+});
+
+const SpecificClass = require('../src/specificClass');
+
+function createNodeHarness(flowNode = null) {
+  const handlers = {};
+  const node = {
+    id: 'dashboard-node-id',
+    on: jest.fn((event, handler) => {
+      handlers[event] = handler;
+    }),
+    status: jest.fn(),
+    error: jest.fn(),
+    _flow: {
+      getNode: jest.fn(() => flowNode),
+    },
+  };
+
+  return { node, handlers };
+}
+
+describe('dashboardAPI nodeClass', () => {
+  beforeEach(() => {
+    jest.clearAllMocks();
+    delete process.env.GRAFANA_TOKEN;
+  });
+
+  it('uses RED.nodes.getNode when it returns a runtime child', async () => {
+    const childNode = {
+      source: {
+        config: {
+          general: { name: 'child' },
+          functionality: { softwareType: 'measurement' },
+        },
+      },
+    };
+    const { node, handlers } = createNodeHarness();
+    const RED = {
+      nodes: {
+        getNode: jest.fn(() => childNode),
+      },
+    };
+
+    new NodeClass({ name: 'E2E-DashboardAPI', host: 'grafana', port: 3000 }, RED, node, 'dashboardapi');
+
+    expect(SpecificClass).toHaveBeenCalledWith(
+      expect.objectContaining({
+        general: expect.objectContaining({
+          name: 'E2E-DashboardAPI',
+          id: 'dashboard-node-id',
+        }),
+        functionality: expect.objectContaining({
+          softwareType: 'dashboardapi',
+          role: 'auto ui generator',
+        }),
+        grafanaConnector: expect.objectContaining({
+          host: 'grafana',
+          port: 3000,
+        }),
+      }),
+    );
+
+    const send = jest.fn();
+    const done = jest.fn();
+    await handlers.input({ topic: 'registerChild', payload: 'measurement-e2e-node' }, send, done);
+
+    expect(RED.nodes.getNode).toHaveBeenCalledWith('measurement-e2e-node');
+    expect(send).toHaveBeenCalledWith(
+      expect.objectContaining({
+        topic: 'create',
+        url: 'http://grafana:3000/api/dashboards/db',
+        method: 'POST',
+        payload: {
+          dashboard: { title: 'ok' },
+          folderId: 0,
+          overwrite: true,
+        },
+      }),
+    );
+    expect(done).toHaveBeenCalledWith();
+  });
+
+  it('falls back to the active flow when RED.nodes.getNode lacks source state', async () => {
+    const flowChildNode = {
+      source: {
+        config: {
+          general: { name: 'child' },
+          functionality: { softwareType: 'measurement' },
+        },
+      },
+    };
+    const { node, handlers } = createNodeHarness(flowChildNode);
+    const RED = {
+      nodes: {
+        getNode: jest.fn(() => ({ id: 'measurement-e2e-node' })),
+      },
+    };
+
+    new NodeClass({ name: 'E2E-DashboardAPI', host: 'grafana', port: 3000 }, RED, node, 'dashboardapi');
+
+    const send = jest.fn();
+    const done = jest.fn();
+    await handlers.input({ topic: 'registerChild', payload: 'measurement-e2e-node' }, send, done);
+
+    expect(node._flow.getNode).toHaveBeenCalledWith('measurement-e2e-node');
+    expect(send).toHaveBeenCalledWith(
+      expect.objectContaining({
+        topic: 'create',
+        payload: {
+          dashboard: { title: 'ok' },
+          folderId: 0,
+          overwrite: true,
+        },
+      }),
+    );
+    expect(done).toHaveBeenCalledWith();
+  });
+
+  it('accepts a child config payload directly', async () => {
+    const { node, handlers } = createNodeHarness();
+    const RED = {
+      nodes: {
+        getNode: jest.fn(),
+      },
+    };
+
+    new NodeClass({ name: 'E2E-DashboardAPI', host: 'grafana', port: 3000 }, RED, node, 'dashboardapi');
+
+    const send = jest.fn();
+    const done = jest.fn();
+    await handlers.input(
+      {
+        topic: 'registerChild',
+        payload: {
+          config: {
+            general: { name: 'E2E-Level-Sensor' },
+            functionality: { softwareType: 'measurement' },
+          },
+        },
+      },
+      send,
+      done,
+    );
+
+    expect(RED.nodes.getNode).not.toHaveBeenCalled();
+    expect(send).toHaveBeenCalledWith(
+      expect.objectContaining({
+        topic: 'create',
+        payload: {
+          dashboard: { title: 'ok' },
+          folderId: 0,
+          overwrite: true,
+        },
+      }),
+    );
+    expect(done).toHaveBeenCalledWith();
+  });
+});