Store ephemeral user group associations

Users are associated with user groups via the "organizations" attribute
of their authentication JWT.  We're going to want our queries and
authentication checks to account for those group associations, but we
don't want to have to constantly pass an unpredictably long list of
associations every time we make a query.

This entity, and the middleware that populates it, allows a given API
call to have those associations accounted for in a given HTTP request
context.  The table is labeled "ephemeral" to try to convey the fact
that the data it contains should not be considered accurate outside of
that context.

The implementation of the middleware right now is intentionally simple
and does not attempt to be efficient.  For example, it does not attempt
to re-use any past data in the table (e.g. associations that may have
existed from a past transaction and wouldn't necessarily have to be
re-created).

We may find that having O(n) insert queries for every authenticated API
call is too slow; if that ends up becoming a problem we may determine
that our model for using KeyCloak as the group management and JWTs as
the communication mechanism isn't correct.

These associations are not actually used when making auth decisions yet.
This commit is, however, a prerequisite for that feature.

Issue #Create user-group associations "cache" middleware

src/database/initialization/ephemeral_user_group_association_to_json.sql

@@ -0,0 +1,14 @@
+SELECT drop_function('ephemeral_user_group_association_to_json');
+
+CREATE FUNCTION ephemeral_user_group_association_to_json(
+	ephemeral_user_group_association ephemeral_user_group_associations
+)
+RETURNS jsonb AS $$
+BEGIN
+  RETURN jsonb_build_object(
+    'userKeycloakUserId', ephemeral_user_group_association.user_keycloak_user_id,
+    'userGroupKeycloakOrganizationId', ephemeral_user_group_association.user_group_keycloak_organization_id,
+    'createdAt', data_provider.created_at
+  );
+END;
+$$ LANGUAGE plpgsql;

src/database/migrations/0050-create-ephemeral-user-group-associations.sql

@@ -0,0 +1,8 @@
+CREATE TABLE ephemeral_user_group_associations (
+	user_keycloak_user_id uuid NOT NULL REFERENCES users (
+		keycloak_user_id
+	) ON DELETE CASCADE,
+	user_group_keycloak_organization_id uuid NOT NULL,
+	created_at timestamp with time zone NOT NULL DEFAULT now(),
+	PRIMARY KEY (user_keycloak_user_id, user_group_keycloak_organization_id)
+);

src/database/operations/ephemeralUserGroupAssociations/createEphemeralUserGroupAssociation.ts

@@ -0,0 +1,17 @@
+import { generateCreateOrUpdateItemOperation } from '../generators';
+import type {
+	EphemeralUserGroupAssociation,
+	InternallyWritableEphemeralUserGroupAssociation,
+} from '../../../types';
+
+const createEphemeralUserGroupAssociation = generateCreateOrUpdateItemOperation<
+	EphemeralUserGroupAssociation,
+	InternallyWritableEphemeralUserGroupAssociation,
+	[]
+>(
+	'ephemeralUserGroupAssociation.insertOne',
+	['userKeycloakUserId', 'userGroupKeycloakOrganizationId'],
+	[],
+);
+
+export { createEphemeralUserGroupAssociation };

src/database/operations/ephemeralUserGroupAssociations/index.ts

@@ -0,0 +1,2 @@
+export * from './createEphemeralUserGroupAssociation';
+export * from './removeEphemeralUserGroupAssociationsByUserKeycloakUserId';

src/database/operations/ephemeralUserGroupAssociations/removeEphemeralUserGroupAssociationsByUserKeycloakUserId.ts

@@ -0,0 +1,10 @@
+import { generateRemoveOperation } from '../generators';
+import type { KeycloakId } from '../../../types';
+
+const removeEphemeralUserGroupAssociationsByUserKeycloakUserId =
+	generateRemoveOperation<[userKeycloakUserId: KeycloakId]>(
+		'ephemeralUserGroupAssociations.deleteByUserKeycloakUserId',
+		['userKeycloakUserId'],
+	);
+
+export { removeEphemeralUserGroupAssociationsByUserKeycloakUserId };

src/database/operations/index.ts

@@ -7,6 +7,7 @@ export * from './bulkUploadTasks';
 export * from './changemakerProposals';
 export * from './changemakers';
 export * from './dataProviders';
+export * from './ephemeralUserGroupAssociations';
 export * from './funders';
 export * from './generic';
 export * from './opportunities';

src/database/queries/ephemeralUserGroupAssociations/deleteByUserKeycloakUserId.sql

@@ -0,0 +1,3 @@
+DELETE FROM ephemeral_user_group_associations
+WHERE user_keycloak_user_id = :userKeycloakUserId
+RETURNING *;

src/database/queries/ephemeralUserGroupAssociations/insertOne.sql

@@ -0,0 +1,15 @@
+INSERT INTO ephemeral_user_group_associations (
+	user_keycloak_user_id,
+	user_group_keycloak_organization_id
+) VALUES (
+	:userKeycloakUserId,
+	:userGroupKeycloakOrganizationId
+)
+ON CONFLICT (
+	user_keycloak_user_id, permission, user_group_keycloak_organization_id
+) DO UPDATE
+SET user_keycloak_user_id = user_keycloak_user_id
+RETURNING
+	ephemeral_user_group_association_to_json(
+		ephemeral_user_group_associations
+	) AS object;

src/middleware/addUserContext.ts

@@ -1,6 +1,13 @@
-import { db, createOrUpdateUser } from '../database';
+import {
+	db,
+	createOrUpdateUser,
+	loadUserByKeycloakUserId,
+	createEphemeralUserGroupAssociation,
+	removeEphemeralUserGroupAssociationsByUserKeycloakUserId,
+} from '../database';
 import {
 	getAuthSubFromRequest,
+	getKeycloakOrganizationIdsFromRequest,
 	isKeycloakId,
 	keycloakIdToString,
 	stringToKeycloakId,
@@ -16,6 +23,7 @@ const addUserContext = (
 	next: NextFunction,
 ): void => {
 	const keycloakUserId = getAuthSubFromRequest(req);
+	const keycloakOrganizationIds = getKeycloakOrganizationIdsFromRequest(req);
 	const systemUser = getSystemUser();
 	if (
 		keycloakUserId === undefined ||
@@ -35,15 +43,41 @@ const addUserContext = (
 		return;
 	}
 
-	createOrUpdateUser(db, null, {
-		keycloakUserId: stringToKeycloakId(keycloakUserId),
-	})
-		.then((user) => {
-			(req as AuthenticatedRequest).user = user;
-			next();
+	Promise.all([
+		createOrUpdateUser(db, null, {
+			keycloakUserId: stringToKeycloakId(keycloakUserId),
+		}),
+		removeEphemeralUserGroupAssociationsByUserKeycloakUserId(
+			db,
+			null,
+			keycloakUserId,
+		),
+	])
+		.then(() => {
+			const createEphemeralUserGroupAssociationPromises =
+				keycloakOrganizationIds.map((keycloakOrganizationId) =>
+					createEphemeralUserGroupAssociation(db, null, {
+						userKeycloakUserId: keycloakUserId,
+						userGroupKeycloakOrganizationId: keycloakOrganizationId,
+					}),
+				);
+			Promise.all(createEphemeralUserGroupAssociationPromises)
+				.then(() => {
+					loadUserByKeycloakUserId(db, null, keycloakUserId)
+						.then((user) => {
+							(req as AuthenticatedRequest).user = user;
+							next();
+						})
+						.catch((err) => {
+							next(err);
+						});
+				})
+				.catch((err) => {
+					next(err);
+				});
 		})
-		.catch((error: unknown) => {
-			next(error);
+		.catch((err) => {
+			next(err);
 		});
 };
 

src/types/EphemeralUserGroupAssociation.ts

@@ -0,0 +1,24 @@
+import { KeycloakId } from './KeycloakId';
+import { Writable } from './Writable';
+
+interface EphemeralUserGroupAssociation {
+	readonly userKeycloakUserId: KeycloakId;
+	readonly userGroupKeycloakOrganizationId: KeycloakId;
+	readonly createdAt: string;
+}
+
+type WritableEphemeralUserGroupAssociation =
+	Writable<EphemeralUserGroupAssociation>;
+
+type InternallyWritableEphemeralUserGroupAssociation =
+	WritableEphemeralUserGroupAssociation &
+		Pick<
+			EphemeralUserGroupAssociation,
+			'userKeycloakUserId' | 'userGroupKeycloakOrganizationId'
+		>;
+
+export {
+	EphemeralUserGroupAssociation,
+	InternallyWritableEphemeralUserGroupAssociation,
+	WritableEphemeralUserGroupAssociation,
+};

src/types/express/AuthenticatedRequest.ts

@@ -1,5 +1,6 @@
 import { Request as JwtRequest } from 'express-jwt';
 import { ajv } from '../../ajv';
+import { KeycloakId, keycloakIdSchema } from '../KeycloakId';
 import type { JSONSchemaType } from 'ajv';
 import type { Request } from 'express';
 import type { AuthContext } from '../AuthContext';
@@ -20,6 +21,12 @@ interface ObjectWithAuthWithRealmAccessRoles {
 	};
 }
 
+interface ObjectWithAuthWithOrganizations {
+	auth: {
+		organizations: Record<string, { id: KeycloakId }>;
+	};
+}
+
 const objectWithAuthWithSubSchema: JSONSchemaType<ObjectWithAuthWithSub> = {
 	type: 'object',
 	properties: {
@@ -60,18 +67,54 @@ const objectWithAuthWithRealmAccessRolesSchema: JSONSchemaType<ObjectWithAuthWit
 		required: ['auth'],
 	};
 
+const objectWithAuthWithOrganizationsSchema: JSONSchemaType<ObjectWithAuthWithOrganizations> =
+	{
+		type: 'object',
+		properties: {
+			auth: {
+				type: 'object',
+				properties: {
+					organizations: {
+						type: 'object',
+						additionalProperties: {
+							type: 'object',
+							properties: {
+								id: keycloakIdSchema,
+							},
+							required: ['id'],
+						},
+						required: [],
+					},
+				},
+				required: ['organizations'],
+			},
+		},
+		required: ['auth'],
+	};
+
 const hasAuthWithSub = ajv.compile(objectWithAuthWithSubSchema);
 
 const hasAuthWithRealmAccessRoles = ajv.compile(
 	objectWithAuthWithRealmAccessRolesSchema,
 );
 
+const isObjectWithAuthWithOrganizations = ajv.compile(
+	objectWithAuthWithOrganizationsSchema,
+);
+
 const getAuthSubFromRequest = (req: Request): string | undefined =>
 	hasAuthWithSub(req) ? req.auth.sub : undefined;
 
 const getRealmAccessRolesFromRequest = (req: Request): string[] =>
 	hasAuthWithRealmAccessRoles(req) ? req.auth.realm_access.roles : [];
 
+const getKeycloakOrganizationIdsFromRequest = (req: Request): KeycloakId[] =>
+	isObjectWithAuthWithOrganizations(req)
+		? Object.values(req.auth.organizations).map(
+				(organization) => organization.id,
+			)
+		: [];
+
 const hasMeaningfulAuthSub = (req: Request): boolean => {
 	const authSub = getAuthSubFromRequest(req);
 	return authSub !== undefined && authSub !== '';
@@ -81,5 +124,6 @@ export {
 	AuthenticatedRequest,
 	getAuthSubFromRequest,
 	getRealmAccessRolesFromRequest,
+	getKeycloakOrganizationIdsFromRequest,
 	hasMeaningfulAuthSub,
 };

src/types/index.ts

@@ -11,6 +11,7 @@ export * from './ChangemakerProposal';
 export * from './CheckResult';
 export * from './CopyBaseFieldsJobPayload';
 export * from './DataProvider';
+export * from './EphemeralUserGroupAssociation';
 export * from './express/AuthenticatedRequest';
 export * from './Funder';
 export * from './Id';