@smithy/core
Version:
[](https://www.npmjs.com/package/@smithy/core) [](https://www.npmjs.com/package/@smithy/core)
41 lines (40 loc) • 1.94 kB
JavaScript
import { SMITHY_CONTEXT_KEY, } from "@smithy/types";
import { getSmithyContext } from "@smithy/util-middleware";
function convertHttpAuthSchemesToMap(httpAuthSchemes) {
const map = new Map();
for (const scheme of httpAuthSchemes) {
map.set(scheme.schemeId, scheme);
}
return map;
}
export const httpAuthSchemeMiddleware = (config, mwOptions) => (next, context) => async (args) => {
const options = config.httpAuthSchemeProvider(await mwOptions.httpAuthSchemeParametersProvider(config, context, args.input));
const authSchemes = convertHttpAuthSchemesToMap(config.httpAuthSchemes);
const smithyContext = getSmithyContext(context);
const failureReasons = [];
for (const option of options) {
const scheme = authSchemes.get(option.schemeId);
if (!scheme) {
failureReasons.push(`HttpAuthScheme \`${option.schemeId}\` was not enabled for this service.`);
continue;
}
const identityProvider = scheme.identityProvider(await mwOptions.identityProviderConfigProvider(config));
if (!identityProvider) {
failureReasons.push(`HttpAuthScheme \`${option.schemeId}\` did not have an IdentityProvider configured.`);
continue;
}
const { identityProperties = {}, signingProperties = {} } = option.propertiesExtractor?.(config, context) || {};
option.identityProperties = Object.assign(option.identityProperties || {}, identityProperties);
option.signingProperties = Object.assign(option.signingProperties || {}, signingProperties);
smithyContext.selectedHttpAuthScheme = {
httpAuthOption: option,
identity: await identityProvider(option.identityProperties),
signer: scheme.signer,
};
break;
}
if (!smithyContext.selectedHttpAuthScheme) {
throw new Error(failureReasons.join("\n"));
}
return next(args);
};