feat: auto-restart policies, SSL monitoring, DNS propagation, dependency tracking, config drift detection

dashcaddy-api/routes/dependencies.js

@@ -0,0 +1,235 @@
+/**
+ * Dependencies Route — REST API for service dependency tracking
+ *
+ * Endpoints:
+ *  GET    /dependencies/graph                Full dependency graph
+ *  GET    /dependencies/validate             Validate a proposed dep chain
+ *  GET    /dependencies/:serviceId           Direct deps for one service
+ *  GET    /dependencies/:serviceId/chain     Ordered restart chain
+ *  GET    /dependencies/:serviceId/status    Dependency health status
+ *  POST   /dependencies/:serviceId           Set dependencies
+ *  DELETE /dependencies/:serviceId           Remove all dependencies
+ *  POST   /dependencies/:serviceId/restart   Restart with dependency chain
+ *
+ * @module routes/dependencies
+ */
+
+const express = require('express');
+const { success, error: errorResponse } = require('../response-helpers');
+const { NotFoundError, ValidationError } = require('../errors');
+
+/**
+ * Dependencies route factory
+ *
+ * @param {Object} deps - Explicit dependencies
+ * @param {Object} deps.dependencyManager - DependencyManager instance
+ * @param {Object} deps.servicesStateManager - State manager for services.json
+ * @param {Object} deps.docker - Docker client wrapper
+ * @param {Function} deps.asyncHandler - Async route handler wrapper
+ * @param {Function} deps.logError - Error logging function
+ * @param {Function} deps.resyncHealthChecker - Health checker resync function
+ * @param {Object} deps.log - Logger instance
+ * @returns {express.Router}
+ */
+module.exports = function({
+  dependencyManager,
+  servicesStateManager,
+  docker,
+  asyncHandler,
+  logError,
+  resyncHealthChecker,
+  log,
+}) {
+  const router = express.Router();
+
+  // -------------------------------------------------------------------------
+  // GET /dependencies/graph — Full dependency graph
+  // -------------------------------------------------------------------------
+  router.get('/graph', asyncHandler(async (req, res) => {
+    const graph = await dependencyManager.getDependencyGraph();
+    success(res, { graph });
+  }, 'dep-graph'));
+
+  // -------------------------------------------------------------------------
+  // GET /dependencies/validate — Validate a proposed dep chain (query params)
+  // -------------------------------------------------------------------------
+  router.get('/validate', asyncHandler(async (req, res) => {
+    const { serviceId, dependsOn } = req.query;
+
+    if (!serviceId) {
+      throw new ValidationError('serviceId query parameter is required');
+    }
+
+    // dependsOn may be a comma-separated string or already an array
+    let parsed;
+    if (Array.isArray(dependsOn)) {
+      parsed = dependsOn;
+    } else if (typeof dependsOn === 'string' && dependsOn.length > 0) {
+      parsed = dependsOn.split(',').map(s => s.trim()).filter(Boolean);
+    } else {
+      parsed = [];
+    }
+
+    const result = await dependencyManager.validateDependencies(serviceId, parsed);
+    success(res, result);
+  }, 'dep-validate'));
+
+  // -------------------------------------------------------------------------
+  // GET /dependencies/:serviceId — Direct deps for one service
+  // -------------------------------------------------------------------------
+  router.get('/:serviceId', asyncHandler(async (req, res) => {
+    const { serviceId } = req.params;
+    const dependencies = await dependencyManager.getDependencies(serviceId);
+    const dependents = await dependencyManager.getDependents(serviceId);
+
+    // Read the service's current dependsOn array
+    const services = await servicesStateManager.read();
+    const allServices = Array.isArray(services) ? services : (services.services || []);
+    const service = allServices.find(s => s.id === serviceId);
+
+    if (!service) {
+      throw new NotFoundError(`Service "${serviceId}"`);
+    }
+
+    success(res, {
+      serviceId,
+      dependsOn: service.dependsOn || [],
+      dependencies,
+      dependents: dependents.map(d => ({ id: d.id, name: d.name })),
+    });
+  }, 'dep-get'));
+
+  // -------------------------------------------------------------------------
+  // GET /dependencies/:serviceId/chain — Ordered restart chain
+  // -------------------------------------------------------------------------
+  router.get('/:serviceId/chain', asyncHandler(async (req, res) => {
+    const { serviceId } = req.params;
+    const chain = await dependencyManager.getOrderedRestartChain(serviceId);
+    success(res, { serviceId, chain });
+  }, 'dep-chain'));
+
+  // -------------------------------------------------------------------------
+  // GET /dependencies/:serviceId/status — Dependency health status
+  // -------------------------------------------------------------------------
+  router.get('/:serviceId/status', asyncHandler(async (req, res) => {
+    const { serviceId } = req.params;
+    const statuses = await dependencyManager.getDependencyStatus(serviceId);
+    success(res, { serviceId, statuses });
+  }, 'dep-status'));
+
+  // -------------------------------------------------------------------------
+  // POST /dependencies/:serviceId — Set dependencies
+  // -------------------------------------------------------------------------
+  router.post('/:serviceId', asyncHandler(async (req, res) => {
+    const { serviceId } = req.params;
+    const { dependsOn } = req.body;
+
+    if (!Array.isArray(dependsOn)) {
+      throw new ValidationError('Request body must include dependsOn as an array of service IDs');
+    }
+
+    // Validate first
+    const validation = await dependencyManager.validateDependencies(serviceId, dependsOn);
+    if (!validation.valid) {
+      return errorResponse(res, validation.errors.join('; '), 400);
+    }
+
+    // Update the service
+    let found = false;
+    await servicesStateManager.update(services => {
+      const arr = Array.isArray(services) ? services : [];
+      return arr.map(s => {
+        if (s.id === serviceId) {
+          found = true;
+          return { ...s, dependsOn: dependsOn.slice() };
+        }
+        return s;
+      });
+    });
+
+    if (!found) {
+      throw new NotFoundError(`Service "${serviceId}"`);
+    }
+
+    log.info('dependency', 'Dependencies updated', { serviceId, dependsOn });
+
+    success(res, {
+      message: `Dependencies updated for "${serviceId}"`,
+      serviceId,
+      dependsOn,
+    });
+  }, 'dep-set'));
+
+  // -------------------------------------------------------------------------
+  // DELETE /dependencies/:serviceId — Remove all dependencies for a service
+  // -------------------------------------------------------------------------
+  router.delete('/:serviceId', asyncHandler(async (req, res) => {
+    const { serviceId } = req.params;
+
+    let found = false;
+    await servicesStateManager.update(services => {
+      const arr = Array.isArray(services) ? services : [];
+      return arr.map(s => {
+        if (s.id === serviceId) {
+          found = true;
+          const updated = { ...s };
+          delete updated.dependsOn;
+          return updated;
+        }
+        return s;
+      });
+    });
+
+    if (!found) {
+      throw new NotFoundError(`Service "${serviceId}"`);
+    }
+
+    log.info('dependency', 'Dependencies removed', { serviceId });
+
+    success(res, {
+      message: `All dependencies removed for "${serviceId}"`,
+      serviceId,
+    });
+  }, 'dep-delete'));
+
+  // -------------------------------------------------------------------------
+  // POST /dependencies/:serviceId/restart — Restart with dependency chain
+  // -------------------------------------------------------------------------
+  router.post('/:serviceId/restart', asyncHandler(async (req, res) => {
+    const { serviceId } = req.params;
+
+    // Verify the service exists
+    const services = await servicesStateManager.read();
+    const allServices = Array.isArray(services) ? services : (services.services || []);
+    if (!allServices.find(s => s.id === serviceId)) {
+      throw new NotFoundError(`Service "${serviceId}"`);
+    }
+
+    // Get the chain first for the response (before async restart begins)
+    let chain;
+    try {
+      chain = await dependencyManager.getOrderedRestartChain(serviceId);
+    } catch (err) {
+      return errorResponse(res, err.message, 400);
+    }
+
+    // Respond immediately with the chain order
+    success(res, {
+      message: `Dependency restart initiated for "${serviceId}"`,
+      serviceId,
+      chain,
+    });
+
+    // Run the restart chain asynchronously so the client doesn't block
+    dependencyManager.restartWithDependencies(serviceId).catch(err => {
+      if (log) {
+        log.error('dependency', 'Async dependency restart failed', {
+          serviceId,
+          error: err.message,
+        });
+      }
+    });
+  }, 'dep-restart'));
+
+  return router;
+};