serverless-spy
Version:
CDK-based library for writing elegant integration tests on AWS serverless architecture and an additional web console to monitor events in real time.
42 lines (41 loc) • 1.52 kB
JavaScript
import { ProviderError } from "@smithy/property-provider";
export const createCredentialChain = (...credentialProviders) => {
let expireAfter = -1;
const baseFunction = async (awsIdentityProperties) => {
const credentials = await propertyProviderChain(...credentialProviders)(awsIdentityProperties);
if (!credentials.expiration && expireAfter !== -1) {
credentials.expiration = new Date(Date.now() + expireAfter);
}
return credentials;
};
const withOptions = Object.assign(baseFunction, {
expireAfter(milliseconds) {
if (milliseconds < 5 * 60000) {
throw new Error("@aws-sdk/credential-providers - createCredentialChain(...).expireAfter(ms) may not be called with a duration lower than five minutes.");
}
expireAfter = milliseconds;
return withOptions;
},
});
return withOptions;
};
export const propertyProviderChain = (...providers) => async (awsIdentityProperties) => {
if (providers.length === 0) {
throw new ProviderError("No providers in chain");
}
let lastProviderError;
for (const provider of providers) {
try {
const credentials = await provider(awsIdentityProperties);
return credentials;
}
catch (err) {
lastProviderError = err;
if (err?.tryNextLink) {
continue;
}
throw err;
}
}
throw lastProviderError;
};