34 lines
1.3 KiB
JavaScript
34 lines
1.3 KiB
JavaScript
import { HttpRequest } from "@smithy/protocol-http";
|
|
const TRACE_ID_HEADER_NAME = "X-Amzn-Trace-Id";
|
|
const ENV_LAMBDA_FUNCTION_NAME = "AWS_LAMBDA_FUNCTION_NAME";
|
|
const ENV_TRACE_ID = "_X_AMZN_TRACE_ID";
|
|
export const recursionDetectionMiddleware = (options) => (next) => async (args) => {
|
|
const { request } = args;
|
|
if (!HttpRequest.isInstance(request) ||
|
|
options.runtime !== "node" ||
|
|
request.headers.hasOwnProperty(TRACE_ID_HEADER_NAME)) {
|
|
return next(args);
|
|
}
|
|
const functionName = process.env[ENV_LAMBDA_FUNCTION_NAME];
|
|
const traceId = process.env[ENV_TRACE_ID];
|
|
const nonEmptyString = (str) => typeof str === "string" && str.length > 0;
|
|
if (nonEmptyString(functionName) && nonEmptyString(traceId)) {
|
|
request.headers[TRACE_ID_HEADER_NAME] = traceId;
|
|
}
|
|
return next({
|
|
...args,
|
|
request,
|
|
});
|
|
};
|
|
export const addRecursionDetectionMiddlewareOptions = {
|
|
step: "build",
|
|
tags: ["RECURSION_DETECTION"],
|
|
name: "recursionDetectionMiddleware",
|
|
override: true,
|
|
priority: "low",
|
|
};
|
|
export const getRecursionDetectionPlugin = (options) => ({
|
|
applyToStack: (clientStack) => {
|
|
clientStack.add(recursionDetectionMiddleware(options), addRecursionDetectionMiddlewareOptions);
|
|
},
|
|
});
|