feat(identities/kubernetes-auth): use gateway as token reviewer

backend/src/db/migrations/20250604174128_identity-kubernetes-auth-gateway-reviewer.ts

@@ -0,0 +1,23 @@
+import { Knex } from "knex";
+
+import { TableName } from "../schemas";
+
+export async function up(knex: Knex): Promise<void> {
+  const hasTokenReviewModeColumn = await knex.schema.hasColumn(TableName.IdentityKubernetesAuth, "tokenReviewMode");
+
+  if (!hasTokenReviewModeColumn) {
+    await knex.schema.alterTable(TableName.IdentityKubernetesAuth, (table) => {
+      table.string("tokenReviewMode").notNullable().defaultTo("api");
+    });
+  }
+}
+
+export async function down(knex: Knex): Promise<void> {
+  const hasTokenReviewModeColumn = await knex.schema.hasColumn(TableName.IdentityKubernetesAuth, "tokenReviewMode");
+
+  if (hasTokenReviewModeColumn) {
+    await knex.schema.alterTable(TableName.IdentityKubernetesAuth, (table) => {
+      table.dropColumn("tokenReviewMode");
+    });
+  }
+}

backend/src/db/schemas/identity-kubernetes-auths.ts

@@ -31,6 +31,7 @@ export const IdentityKubernetesAuthsSchema = z.object({
   encryptedKubernetesTokenReviewerJwt: zodBuffer.nullable().optional(),
   encryptedKubernetesCaCertificate: zodBuffer.nullable().optional(),
   gatewayId: z.string().uuid().nullable().optional(),
+  tokenReviewMode: z.string().default("api"),
   accessTokenPeriod: z.coerce.number().default(0)
 });