const { AWS_LAMBDA_RUNTIME_API, LAMBDA_TASK_ROOT, _HANDLER } = process.env;
if (!AWS_LAMBDA_RUNTIME_API || AWS_LAMBDA_RUNTIME_API === "") {
throw new Error("AWS_LAMBDA_RUNTIME_API is not set");
}
const nextURL = `http://${AWS_LAMBDA_RUNTIME_API}/2018-06-01/runtime/invocation/next`;
const sourceDir = LAMBDA_TASK_ROOT;
if (!sourceDir) {
throw new Error("handler is not set");
}
// don't care if this fails
if (process.cwd() !== sourceDir) {
try {
process.chdir(sourceDir);
} catch (e) {}
}
var handlerDot = _HANDLER.lastIndexOf(".");
var sourcefile = handlerDot > 0 ? _HANDLER.substring(0, handlerDot) : _HANDLER;
if (sourcefile.length === 0) {
throw new Error("handler is not set");
}
if (!sourcefile.startsWith("/")) {
sourcefile = `./${sourcefile}`;
}
function noop() {}
const method = (handlerDot > 0 ? _HANDLER.substring(handlerDot) : "") || "GET";
if (typeof process.env.VERBOSE !== "undefined") {
console.time(`Loaded ${sourcefile}`);
}
var Handler;
try {
Handler = await import(sourcefile);
} catch (e: any) {
console.error("Error loading sourcefile:", e);
try {
await fetch(
new URL(`http://${AWS_LAMBDA_RUNTIME_API}/2018-06-01/runtime/init/error`)
.href,
{
method: "POST",
headers: {
"Content-Type": "application/json",
},
body: JSON.stringify({
errorMessage: e.message,
errorType: e.name,
stackTrace: e?.stack?.split("\n") ?? [],
}),
},
);
} catch (e2) {
console.error("Error sending error to runtime:", e2);
}
process.exit(1);
}
if (typeof process.env.VERBOSE !== "undefined") {
console.timeEnd(`Loaded ${sourcefile}`);
}
const handlerFunction = Handler.default?.fetch;
if (typeof handlerFunction !== "function") {
const e = new Error(`${sourcefile} must export default a function called fetch
Here is an example:
export default {
fetch(req) {
return new Response("Hello World");
}
}
`);
console.error(e);
try {
await fetch(
new URL(`http://${AWS_LAMBDA_RUNTIME_API}/2018-06-01/runtime/init/error`)
.href,
{
method: "POST",
headers: {
"Content-Type": "application/json",
},
body: JSON.stringify({
errorMessage: e.message,
errorType: e.name,
stackTrace: e?.stack?.split("\n") ?? [],
}),
},
);
} catch (e2) {
console.error("Error sending error to runtime:", e2);
}
process.exit(1);
}
var baseURLString = AWS_LAMBDA_RUNTIME_API;
if ("baseURI" in Handler.default) {
baseURLString = Handler.default.baseURI?.toString();
}
var baseURL;
try {
baseURL = new URL(baseURLString);
} catch (e: any) {
console.error("Error parsing baseURI:", e);
try {
await fetch(
new URL(`http://${AWS_LAMBDA_RUNTIME_API}/2018-06-01/runtime/init/error`)
.href,
{
method: "POST",
headers: {
"Content-Type": "application/json",
},
body: JSON.stringify({
errorMessage: e.message,
errorType: e.name,
stackTrace: e?.stack?.split("\n") || [],
}),
},
);
} catch (e2) {
console.error("Error sending error to runtime:", e2);
}
process.exit(1);
}
async function runHandler(response: Response) {
const traceID = response.headers.get("Lambda-Runtime-Trace-Id");
const requestID = response.headers.get("Lambda-Runtime-Aws-Request-Id");
var request = new Request(baseURL.href, {
method,
headers: response.headers,
body:
parseInt(response.headers.get("Content-Length") || "0", 10) > 0
? await response.blob()
: undefined,
});
// we are done with the Response object here
// allow it to be GC'd
(response as any) = undefined;
var result: Response;
try {
if (typeof process.env.VERBOSE !== "undefined") {
console.time(`[${traceID}] Run ${request.url}`);
}
result = handlerFunction(request, {});
if (result && (result as any).then) {
await result;
}
} catch (e1: any) {
if (typeof process.env.VERBOSE !== "undefined") {
console.error(`[${traceID}] Error running handler:`, e1);
}
fetch(
`http://${AWS_LAMBDA_RUNTIME_API}/2018-06-01/runtime/invocation/${requestID}/error`,
{
method: "POST",
body: JSON.stringify({
errorMessage: e1.message,
errorType: e1.name,
stackTrace: e1?.stack?.split("\n") ?? [],
}),
},
).finally(noop);
return;
} finally {
if (typeof process.env.VERBOSE !== "undefined") {
console.timeEnd(`[${traceID}] Run ${request.url}`);
}
}
if (!result || !("headers" in result)) {
await fetch(
`http://${AWS_LAMBDA_RUNTIME_API}/2018-06-01/runtime/invocation/${requestID}/error`,
{
method: "POST",
body: JSON.stringify({
errorMessage: "Expected Response object",
errorType: "ExpectedResponseObject",
stackTrace: [],
}),
},
);
return;
}
await fetch(
`http://${AWS_LAMBDA_RUNTIME_API}/2018-06-01/runtime/invocation/${requestID}/response`,
{
method: "POST",
headers: result.headers,
body: await result.blob(),
},
);
(result as any) = undefined;
}
while (true) {
fetch(nextURL).then(runHandler, console.error);
}
export {};
insensitive-pkg-names'>insensitive-pkg-names
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