feat(api-gateway): granularities config and /v1/granularities endpoint

packages/cubejs-api-gateway/openspec.yml

@@ -4,6 +4,30 @@ info:
   version: "1.0.0"
   title: "Cube.js"
 paths:
+  "/v1/granularities":
+    get:
+      summary: "List the granularities available for this deployment"
+      description: "Returns the granularities enabled in this deployment — built-ins plus any custom granularities defined via `CUBEJS_GRANULARITIES` or `config.granularities`. Evaluated per request context."
+      operationId: "granularitiesV1"
+      responses:
+        "200":
+          description: "successful operation"
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/V1GranularitiesResponse"
+        "4XX":
+          description: "Request could not be completed"
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/V1Error"
+        "5XX":
+          description: "Internal Server Error"
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/V1Error"
   "/v1/meta":
     get:
       summary: "Load Metadata"
@@ -115,8 +139,17 @@ components:
       properties:
         name:
           type: "string"
+        type:
+          type: "string"
+          description: "Built-in (year/quarter/month/...) or user-defined custom granularity."
+          enum:
+            - built-in
+            - custom
         title:
           type: "string"
+        format:
+          type: "string"
+          description: "d3-time-format string used by clients to display bucketed timestamps."
         interval:
           type: "string"
         sql:
@@ -125,6 +158,17 @@ components:
           type: "string"
         origin:
           type: "string"
+    V1GranularitiesResponse:
+      type: "object"
+      description: "Response shape of GET /v1/granularities."
+      properties:
+        data:
+          type: "object"
+          properties:
+            granularities:
+              type: array
+              items:
+                $ref: "#/components/schemas/V1CubeMetaDimensionGranularity"
     V1CubeMetaDimension:
       type: "object"
       required:

packages/cubejs-api-gateway/package.json

@@ -29,6 +29,7 @@
   "dependencies": {
     "@cubejs-backend/native": "1.6.49",
     "@cubejs-backend/query-orchestrator": "1.6.49",
+    "@cubejs-backend/schema-compiler": "1.6.49",
     "@cubejs-backend/shared": "1.6.49",
     "@ungap/structured-clone": "^0.3.4",
     "assert-never": "^1.4.0",

packages/cubejs-api-gateway/src/gateway.ts

@@ -32,6 +32,13 @@ import type {
 import { createProxyMiddleware } from 'http-proxy-middleware';
 
 import { QueryBody } from '@cubejs-backend/query-orchestrator';
+import {
+  resolveGlobalGranularities,
+  resolveDimensionGranularities,
+  normalizeGranularitiesBlock,
+  buildBuiltInsCatalog,
+  BUILT_IN_GRANULARITIES,
+} from '@cubejs-backend/schema-compiler';
 import {
   QueryType,
   ApiScopes,
@@ -154,6 +161,8 @@ class ApiGateway {
 
   protected readonly extendContext?: ExtendContextFn;
 
+  protected readonly granularitiesOption?: ApiGatewayOptions['granularities'];
+
   protected readonly dataSourceStorage: any;
 
   public readonly checkAuthFn: PreparedCheckAuthFn;
@@ -207,6 +216,7 @@ class ApiGateway {
     this.subscriptionStore = options.subscriptionStore || new LocalSubscriptionStore();
     this.enforceSecurityChecks = options.enforceSecurityChecks || (process.env.NODE_ENV === 'production');
     this.extendContext = options.extendContext;
+    this.granularitiesOption = options.granularities;
 
     this.checkAuthFn = this.createCheckAuthFn(options);
     this.checkAuthSystemFn = this.createCheckAuthSystemFn();
@@ -453,6 +463,17 @@ class ApiGateway {
       })
     );
 
+    app.get(
+      `${this.basePath}/v1/granularities`,
+      userMiddlewares,
+      userAsyncHandler(async (req, res) => {
+        await this.granularities({
+          context: req.context,
+          res: this.resToResultFn(res),
+        });
+      })
+    );
+
     app.post(
       `${this.basePath}/v1/cubesql`,
       userMiddlewares,
@@ -668,7 +689,9 @@ class ApiGateway {
       const cubesConfig = onlyViews
         ? metaConfig.cubes.filter((c: any) => c.config?.type === 'view')
         : metaConfig.cubes;
-      const cubes = this.filterVisibleItemsInMeta(context, cubesConfig).map(cube => cube.config);
+      const filteredCubes = this.filterVisibleItemsInMeta(context, cubesConfig).map(cube => cube.config);
+      // Apply after the visibility filter so we only enrich what the client will actually receive.
+      const cubes = await this.applyGlobalGranularitiesToMetaCubes(context, filteredCubes);
       const visibleCubeNames = new Set(cubes.map(c => c.name));
       const viewGroups = (metaConfig.viewGroups || [])
         .map(group => ({
@@ -695,6 +718,47 @@ class ApiGateway {
     }
   }
 
+  public async granularities({ context, res }: {
+    context: RequestContext,
+    res: ResponseResultFn,
+  }) {
+    const requestStarted = new Date();
+    try {
+      await this.assertApiScope('meta', context.securityContext);
+      const globalConfig = await this.resolveGlobalGranularitiesForRequest(context);
+      const builtInsCatalog = buildBuiltInsCatalog(globalConfig);
+
+      const granularities: any[] = [];
+      for (const [name, entry] of Object.entries(builtInsCatalog)) {
+        granularities.push({ type: 'built-in', name, ...entry });
+      }
+      for (const [name, def] of Object.entries<any>(globalConfig.customGranularities)) {
+        // Skip names already emitted by `buildBuiltInsCatalog` (their inline overrides are folded in there).
+        if (!(name in BUILT_IN_GRANULARITIES)) {
+          const entry: any = {
+            type: 'custom',
+            name,
+            title: def.title || name,
+          };
+          if (def.interval !== undefined) entry.interval = def.interval;
+          if (def.origin !== undefined) entry.origin = def.origin;
+          if (def.offset !== undefined) entry.offset = def.offset;
+          if (def.format !== undefined) entry.format = def.format;
+          granularities.push(entry);
+        }
+      }
+      res({ data: { granularities } });
+    } catch (e: any) {
+      this.handleError({
+        e,
+        context,
+        // @ts-ignore
+        res,
+        requestStarted,
+      });
+    }
+  }
+
   public async metaExtended({ context, res, onlyViews }: {
     context: ExtendedRequestContext,
     res: ResponseResultFn,
@@ -1998,6 +2062,13 @@ class ApiGateway {
       });
 
       metaConfigResult = this.filterVisibleItemsInMeta(context, metaConfigResult);
+      // Annotation reads from this meta. Without enrichment, /v1/load and /v1/cubesql would
+      // omit the type/title/format/interval fields that /v1/meta exposes.
+      const enrichedCubes = await this.applyGlobalGranularitiesToMetaCubes(
+        context,
+        metaConfigResult.map((m: any) => m.config),
+      );
+      metaConfigResult = metaConfigResult.map((m: any, i: number) => ({ ...m, config: enrichedCubes[i] }));
 
       const sqlQueries = await this.getSqlQueriesInternal(context, normalizedQueries);
 
@@ -2296,6 +2367,57 @@ class ApiGateway {
     return this.adapterApi(context);
   }
 
+  protected async resolveGlobalGranularitiesForRequest(context: RequestContext) {
+    return resolveGlobalGranularities(this.granularitiesOption, context);
+  }
+
+  // Reconcile each time dimension's `granularitiesBlock` against the request's global config
+  // and emit the effective granularity array. Built-ins get tagged `built-in`, locals/globals
+  // become `custom`. Replaces the per-dim `granularities` array on the returned cube.
+  protected async applyGlobalGranularitiesToMetaCubes(context: RequestContext, cubes: any[]): Promise<any[]> {
+    const globalConfig = await this.resolveGlobalGranularitiesForRequest(context);
+    const builtInsCatalog = buildBuiltInsCatalog(globalConfig);
+
+    return cubes.map(cube => ({
+      ...cube,
+      dimensions: cube.dimensions?.map((dim: any) => {
+        if (dim.type !== 'time') return dim;
+        // Re-key the local-custom array CubeToMetaTransformer produced so the resolver can
+        // merge it back into `granularitiesBlock.custom` cleanly.
+        const localCustom: Record<string, any> = {};
+        for (const g of dim.granularities || []) {
+          localCustom[g.name] = {
+            title: g.title,
+            interval: g.interval,
+            offset: g.offset,
+            origin: g.origin,
+            ...(g.format !== undefined ? { format: g.format } : {}),
+          };
+        }
+        const block = dim.granularitiesBlock || normalizeGranularitiesBlock(undefined);
+        const blockWithLocal = { ...block, custom: { ...block.custom, ...localCustom } };
+        const resolved = resolveDimensionGranularities(
+          blockWithLocal,
+          globalConfig.enabledBuiltIns,
+          globalConfig.customGranularities,
+          builtInsCatalog,
+        );
+        const resolvedArray = Object.entries(resolved).map(([name, def]: [string, any]) => ({
+          name,
+          type: def.type,
+          title: def.title,
+          ...(def.interval !== undefined ? { interval: def.interval } : {}),
+          ...(def.offset !== undefined ? { offset: def.offset } : {}),
+          ...(def.origin !== undefined ? { origin: def.origin } : {}),
+          ...(def.format !== undefined ? { format: def.format } : {}),
+        }));
+        // Strip the transport-only block; clients only see the resolved `granularities` array.
+        const { granularitiesBlock, ...rest } = dim;
+        return { ...rest, granularities: resolvedArray };
+      }),
+    }));
+  }
+
   public async contextByReq(req: Request, securityContext, requestId: string): Promise<ExtendedRequestContext> {
     req.securityContext = securityContext;
 

packages/cubejs-api-gateway/src/helpers/prepare-annotation.ts

@@ -7,14 +7,18 @@
 
 import R from 'ramda';
 import { isPredefinedGranularity } from '@cubejs-backend/shared';
+import { BUILT_IN_GRANULARITIES } from '@cubejs-backend/schema-compiler';
 import { MetaConfig, MetaConfigMap, toConfigMap } from './to-config-map';
 import { MemberType } from '../types/strings';
 import { MemberType as MemberTypeEnum } from '../types/enums';
 import { MemberExpression } from '../types/query';
 
 type GranularityMeta = {
   name: string;
+  type?: 'built-in' | 'custom';
   title: string;
+  /** d3-time-format string for displaying bucketed timestamps. */
+  format?: string;
   interval: string;
   offset?: string;
   origin?: string;
@@ -115,14 +119,25 @@ function prepareAnnotation(metaConfig: MetaConfig[], query: any) {
               if (an) {
                 let granularityMeta: GranularityMeta | undefined;
                 if (isPredefinedGranularity(td.granularity)) {
+                  // Prefer values the meta endpoint already attached (these honor any global
+                  // title/format override). Fall back to BUILT_IN_GRANULARITIES, then to the bare name.
+                  const fromMeta = an[1].granularities?.find(g => g.name === td.granularity);
+                  const builtInDefaults = BUILT_IN_GRANULARITIES[td.granularity] || {};
                   granularityMeta = {
                     name: td.granularity,
-                    title: td.granularity,
-                    interval: `1 ${td.granularity}`,
+                    type: 'built-in',
+                    title: fromMeta?.title || builtInDefaults.title || td.granularity,
+                    interval: fromMeta?.interval || `1 ${td.granularity}`,
+                    ...(fromMeta?.format || builtInDefaults.format
+                      ? { format: fromMeta?.format || builtInDefaults.format }
+                      : {}),
                   };
                 } else if (an[1].granularities) {
-                  // No need to send all the granularities defined, only those make sense for this query
+                  // Forward only the granularity in play for this query; siblings stay in /v1/meta.
                   granularityMeta = an[1].granularities.find(g => g.name === td.granularity);
+                  if (granularityMeta && !granularityMeta.type) {
+                    granularityMeta = { ...granularityMeta, type: 'custom' };
+                  }
                 }
 
                 const { granularities: _, ...rest } = an[1];

packages/cubejs-api-gateway/src/types/gateway.ts

@@ -52,6 +52,19 @@ type ScheduledRefreshContextsFn =
 
 type ScheduledRefreshTimeZonesFn = (context: RequestContext) => string[] | Promise<string[]>;
 
+type GranularityListItem = string | {
+  name: string;
+  title?: string;
+  format?: string;
+  interval?: string;
+  origin?: string;
+  offset?: string;
+};
+type GranularityList = GranularityListItem[];
+type GranularitiesOption =
+  | GranularityList
+  | ((context: RequestContext) => GranularityList | Promise<GranularityList>);
+
 /**
  * Gateway configuration options interface.
  */
@@ -64,6 +77,13 @@ interface ApiGatewayOptions {
   scheduledRefreshTimeZones?: ScheduledRefreshTimeZonesFn;
   basePath: string;
   extendContext?: ExtendContextFn;
+  /**
+   * Enabled granularities (built-in names and/or custom definitions), or a function called per
+   * request to produce the same. Drives /v1/granularities and the /v1/meta enrichment.
+   * Shape mirrors `GranularityList` in @cubejs-backend/schema-compiler; redeclared locally to
+   * avoid a dependency on schema-compiler from this types module.
+   */
+  granularities?: GranularitiesOption;
   jwt?: JWTOptions;
   requestLoggerMiddleware?: RequestLoggerMiddlewareFn;
   queryRewrite?: QueryRewriteFn;

packages/cubejs-api-gateway/test/helpers/prepare-annotation.test.ts

@@ -182,6 +182,7 @@ describe('prepareAnnotation helpers', () => {
       }).timeDimensions
     ).toEqual({
       'cube_name.member': {
+        currency: undefined,
         description: undefined,
         format: undefined,
         meta: undefined,
@@ -190,6 +191,7 @@ describe('prepareAnnotation helpers', () => {
         type: undefined,
       },
       'cube_name.member.day': {
+        currency: undefined,
         description: undefined,
         format: undefined,
         meta: undefined,
@@ -198,8 +200,10 @@ describe('prepareAnnotation helpers', () => {
         type: undefined,
         granularity: {
           name: 'day',
-          title: 'day',
+          type: 'built-in',
+          title: 'Day',
           interval: '1 day',
+          format: '%Y-%m-%d',
         }
       },
     });

packages/cubejs-backend-native/python/cube/src/__init__.py

@@ -70,6 +70,9 @@ class Configuration:
     check_sql_auth: Callable
     can_switch_sql_user: Callable
     extend_context: Callable
+    # Mirrors `granularities` in the JS config: a list of granularity names and/or custom-granularity
+    # definitions, or a function returning the same. Drives /v1/granularities and /v1/meta enrichment.
+    granularities: Union[list, Callable[[RequestContext], list]]
     scheduled_refresh_contexts: Callable
     context_to_api_scopes: Callable
     repository_factory: Callable
@@ -120,6 +123,7 @@ def __init__(self):
         self.can_switch_sql_user = None
         self.query_rewrite = None
         self.extend_context = None
+        self.granularities = None
         self.scheduled_refresh_contexts = None
         self.scheduled_refresh_time_zones = None
         self.context_to_api_scopes = None