update dashboardAPI -AGENT

src/specificClass.js

@@ -0,0 +1,195 @@
+const crypto = require('node:crypto');
+const fs = require('node:fs');
+const path = require('node:path');
+
+const { logger } = require('generalFunctions');
+
+function stableUid(input) {
+  const digest = crypto.createHash('sha1').update(String(input)).digest('hex');
+  return digest.slice(0, 12);
+}
+
+function slugify(input) {
+  return String(input || '')
+    .trim()
+    .toLowerCase()
+    .replace(/[^a-z0-9]+/g, '-')
+    .replace(/(^-|-$)/g, '')
+    .slice(0, 60);
+}
+
+function defaultBucketForPosition(positionVsParent) {
+  const pos = String(positionVsParent || '').toLowerCase();
+  if (pos === 'upstream') return 'lvl1';
+  if (pos === 'downstream') return 'lvl3';
+  return 'lvl2';
+}
+
+function updateTemplatingVar(dashboard, varName, value) {
+  const list = dashboard?.templating?.list;
+  if (!Array.isArray(list)) return;
+
+  const variable = list.find((v) => v && v.name === varName);
+  if (!variable) return;
+
+  variable.current = variable.current || {};
+  variable.current.text = value;
+  variable.current.value = value;
+
+  if (Array.isArray(variable.options) && variable.options.length > 0) {
+    variable.options[0] = variable.options[0] || {};
+    variable.options[0].text = value;
+    variable.options[0].value = value;
+  }
+
+  variable.query = value;
+}
+
+class DashboardApi {
+  constructor(config = {}) {
+    this.config = {
+      general: {
+        name: config?.general?.name || 'dashboardapi',
+        logging: {
+          enabled: Boolean(config?.general?.logging?.enabled),
+          logLevel: config?.general?.logging?.logLevel || 'info',
+        },
+      },
+      grafanaConnector: {
+        protocol: config?.grafanaConnector?.protocol || 'http',
+        host: config?.grafanaConnector?.host || 'localhost',
+        port: Number(config?.grafanaConnector?.port || 3000),
+        bearerToken: config?.grafanaConnector?.bearerToken || '',
+      },
+      bucketMap: config?.bucketMap || {},
+    };
+
+    this.logger = new logger(
+      this.config.general.logging.enabled,
+      this.config.general.logging.logLevel,
+      this.config.general.name
+    );
+  }
+
+  _templatesDir() {
+    return path.join(__dirname, '..', 'config');
+  }
+
+  _templateFileForSoftwareType(softwareType) {
+    const st = String(softwareType || '').trim();
+    const candidates = [
+      `${st}.json`,
+      `${st.toLowerCase()}.json`,
+      st === 'machineGroupControl' ? 'machineGroup.json' : null,
+    ].filter(Boolean);
+
+    for (const filename of candidates) {
+      const fullPath = path.join(this._templatesDir(), filename);
+      if (fs.existsSync(fullPath)) return fullPath;
+    }
+
+    throw new Error(`No dashboard template found for softwareType=${st}`);
+  }
+
+  loadTemplate(softwareType) {
+    const templatePath = this._templateFileForSoftwareType(softwareType);
+    const raw = fs.readFileSync(templatePath, 'utf8');
+    return JSON.parse(raw);
+  }
+
+  grafanaUpsertUrl() {
+    const { protocol, host, port } = this.config.grafanaConnector;
+    return `${protocol}://${host}:${port}/api/dashboards/db`;
+  }
+
+  buildDashboard({ nodeConfig, positionVsParent }) {
+    const softwareType =
+      nodeConfig?.functionality?.softwareType ||
+      nodeConfig?.functionality?.software_type ||
+      'measurement';
+    const nodeId = nodeConfig?.general?.id || nodeConfig?.general?.name || softwareType;
+    const measurementName = `${softwareType}_${nodeId}`;
+    const title = nodeConfig?.general?.name || String(nodeId);
+
+    const dashboard = this.loadTemplate(softwareType);
+    const uid = stableUid(`${softwareType}:${nodeId}`);
+
+    dashboard.id = null;
+    dashboard.uid = uid;
+    dashboard.title = title;
+    dashboard.tags = Array.from(
+      new Set([...(dashboard.tags || []), 'EVOLV', softwareType, String(positionVsParent || '')].filter(Boolean))
+    );
+
+    const bucket =
+      this.config.bucketMap[String(positionVsParent)] || defaultBucketForPosition(positionVsParent);
+
+    updateTemplatingVar(dashboard, 'measurement', measurementName);
+    updateTemplatingVar(dashboard, 'bucket', bucket);
+
+    return { dashboard, uid, title, softwareType, nodeId, measurementName };
+  }
+
+  buildUpsertRequest({ dashboard, folderId = 0, overwrite = true }) {
+    return { dashboard, folderId, overwrite };
+  }
+
+  extractChildren(nodeSource) {
+    const out = [];
+    const reg = nodeSource?.childRegistrationUtils?.registeredChildren;
+    if (reg && typeof reg.values === 'function') {
+      for (const entry of reg.values()) {
+        const child = entry?.child;
+        if (!child?.config) continue;
+        out.push({ childSource: child, positionVsParent: entry?.position || child.positionVsParent });
+      }
+      return out;
+    }
+    return out;
+  }
+
+  generateDashboardsForGraph(rootSource, { includeChildren = true } = {}) {
+    if (!rootSource?.config) {
+      throw new Error('generateDashboardsForGraph requires a node source with `.config`');
+    }
+
+    const rootPosition = rootSource?.positionVsParent || rootSource?.config?.functionality?.positionVsParent;
+    const rootDash = this.buildDashboard({ nodeConfig: rootSource.config, positionVsParent: rootPosition });
+
+    const results = [rootDash];
+
+    if (!includeChildren) return results;
+
+    const children = this.extractChildren(rootSource);
+    for (const { childSource, positionVsParent } of children) {
+      const childDash = this.buildDashboard({ nodeConfig: childSource.config, positionVsParent });
+      results.push(childDash);
+    }
+
+    // Add links from the root dashboard to children dashboards (when possible)
+    if (children.length > 0) {
+      rootDash.dashboard.links = Array.isArray(rootDash.dashboard.links) ? rootDash.dashboard.links : [];
+      for (const { childSource } of children) {
+        const childConfig = childSource.config;
+        const childSoftwareType = childConfig?.functionality?.softwareType || 'measurement';
+        const childNodeId = childConfig?.general?.id || childConfig?.general?.name || childSoftwareType;
+        const childUid = stableUid(`${childSoftwareType}:${childNodeId}`);
+        const childTitle = childConfig?.general?.name || String(childNodeId);
+
+        rootDash.dashboard.links.push({
+          type: 'link',
+          title: childTitle,
+          url: `/d/${childUid}/${slugify(childTitle)}`,
+          tags: [],
+          targetBlank: false,
+          keepTime: true,
+          keepVariables: true,
+        });
+      }
+    }
+
+    return results;
+  }
+}
+
+module.exports = DashboardApi;