chore(config-resolver): add UseFipsEndpointConfigOptions

Author: trivikr

packages/config-resolver/src/regionConfig/UseFipsEndpointConfigOptions.spec.ts

@@ -0,0 +1,47 @@
+import {
+  CONFIG_USE_FIPS_ENDPOINT,
+  ENV_USE_FIPS_ENDPOINT,
+  USE_FIPS_ENDPOINT_CONFIG_OPTIONS,
+} from "./UseFipsEndpointConfigOptions";
+
+describe("USE_FIPS_ENDPOINT_CONFIG_OPTIONS", () => {
+  const test = (selector, obj, key) => {
+    beforeEach(() => {
+      delete obj[key];
+    });
+
+    it(`should return undefined if ${key} is not defined`, () => {
+      expect(selector(obj)).toBeUndefined();
+    });
+
+    it.each([
+      [true, "true"],
+      [false, "false"],
+    ])(`should return boolean %s if ${key}="%s"`, (output, input) => {
+      obj[key] = input;
+      expect(selector(obj)).toBe(output);
+    });
+
+    it.each(["0", "1", "yes", "no", undefined, null, void 0, ""])(`should throw if ${key}=%s`, (input) => {
+      obj[key] = input;
+      expect(() => selector(obj)).toThrow();
+    });
+  };
+
+  describe("environment variable selector", () => {
+    const env: { [ENV_USE_FIPS_ENDPOINT]: any } = {} as any;
+    const { environmentVariableSelector } = USE_FIPS_ENDPOINT_CONFIG_OPTIONS;
+    test(environmentVariableSelector, env, ENV_USE_FIPS_ENDPOINT);
+  });
+
+  describe("config file selector", () => {
+    const profileContent: { [CONFIG_USE_FIPS_ENDPOINT]: any } = {} as any;
+    const { configFileSelector } = USE_FIPS_ENDPOINT_CONFIG_OPTIONS;
+    test(configFileSelector, profileContent, CONFIG_USE_FIPS_ENDPOINT);
+  });
+
+  it("returns false by default", () => {
+    const { default: defaultValue } = USE_FIPS_ENDPOINT_CONFIG_OPTIONS;
+    expect(defaultValue).toEqual(false);
+  });
+});

packages/config-resolver/src/regionConfig/UseFipsEndpointConfigOptions.ts

@@ -0,0 +1,24 @@
+import { LoadedConfigSelectors } from "@aws-sdk/node-config-provider";
+
+export const ENV_USE_FIPS_ENDPOINT = "AWS_USE_FIPS_ENDPOINT";
+export const CONFIG_USE_FIPS_ENDPOINT = "use_fips_endpoint";
+
+export const USE_FIPS_ENDPOINT_CONFIG_OPTIONS: LoadedConfigSelectors<boolean> = {
+  environmentVariableSelector: (env) => {
+    if (!Object.prototype.hasOwnProperty.call(env, ENV_USE_FIPS_ENDPOINT)) return undefined;
+    if (env[ENV_USE_FIPS_ENDPOINT] === "true") return true;
+    if (env[ENV_USE_FIPS_ENDPOINT] === "false") return false;
+    throw new Error(
+      `Cannot load env ${ENV_USE_FIPS_ENDPOINT}. Expected "true" or "false", got ${env[ENV_USE_FIPS_ENDPOINT]}.`
+    );
+  },
+  configFileSelector: (profile) => {
+    if (!Object.prototype.hasOwnProperty.call(profile, CONFIG_USE_FIPS_ENDPOINT)) return undefined;
+    if (profile[CONFIG_USE_FIPS_ENDPOINT] === "true") return true;
+    if (profile[CONFIG_USE_FIPS_ENDPOINT] === "false") return false;
+    throw new Error(
+      `Cannot load shared config entry ${CONFIG_USE_FIPS_ENDPOINT}. Expected "true" or "false", got ${profile[CONFIG_USE_FIPS_ENDPOINT]}.`
+    );
+  },
+  default: false,
+};

packages/config-resolver/src/regionConfig/index.ts

@@ -1,2 +1,3 @@
+export * from "./UseFipsEndpointConfigOptions";
 export * from "./config";
 export * from "./resolveRegionConfig";