@riddance/host
Version:
338 lines • 40.9 kB
JavaScript
import { hash } from 'node:crypto';
import { isIP } from 'node:net';
import { brotliCompress } from 'node:zlib';
import { measure } from '../context.js';
export async function executeRequest(log, context, handler, options, success) {
const isShallow = context.env.SHALLOW_KEY && options.headers?.['x-shallow'] === context.env.SHALLOW_KEY;
const includeBodyInLogs = !handler.config?.excludeBodyFromLogs;
const logRequest = includeBodyInLogs
? { method: handler.method, ...options }
: withoutRequestBody({ method: handler.method, ...options });
let enrichedLog = log.enrichReserved({ meta: context.meta, request: logRequest });
if (isShallow) {
enrichedLog.trace('Shallow request');
return {
headers: {},
status: 204,
};
}
enrichedLog.trace('Request BEGIN');
try {
let parsedUrl;
let pathSteps;
const req = {
rawUrl: options.uri,
get url() {
if (parsedUrl) {
return parsedUrl;
}
const url = new URL(this.rawUrl);
parsedUrl = {
// eslint-disable-next-line unicorn/no-null
__proto__: null,
hash: url.hash,
host: url.host,
hostname: url.hostname,
href: url.href,
origin: url.origin,
password: url.password,
pathname: url.pathname,
port: url.port,
protocol: url.protocol,
search: url.search,
get searchParams() {
return url.searchParams;
},
toJSON: () => url.toJSON(),
toString: () => url.toString(),
username: url.username,
pathStepAt: (index) => {
const steps = (pathSteps ??= url.pathname.split('/'));
const step = steps[index + 1];
if (!step) {
throw Object.assign(new RangeError(`Path does not have a step at index ${index}.`), {
rawUrl: this.rawUrl,
pathName: url.pathname,
steps: steps.slice(1),
});
}
return step;
},
};
return parsedUrl;
},
body: requestBody(options),
headers: options.headers ?? {},
};
const result = await measure(log.enrichReserved({ meta: context.meta }), 'execution', () => handler.entry({ ...context, log: enrichedLog }, req));
const response = resultToResponse(result, includeBodyInLogs);
if (context.signal.aborted) {
response.headers = {
'x-timeout': '1',
...response.headers,
};
}
enrichedLog = enrichedLog.enrichReserved({
response: {
status: response.status,
headers: response.headers,
body: response.logBody,
},
});
if (response.status < 300) {
enrichedLog.debug('Request END');
await success();
}
else {
enrichedLog.warn('Request END');
}
return await compressed(req.headers, eTagged(req.headers, response));
}
catch (e) {
try {
const response = errorToResponse(e);
enrichedLog = enrichedLog.enrichReserved({ response });
enrichedLog.error('Request END', e);
return response;
}
catch (convertError) {
enrichedLog.error('Could not convert exception to error response.', convertError);
return {
headers: {},
status: 500,
};
}
}
}
function resultToResponse(result, withLogBody) {
if (!result) {
return {
headers: {},
status: 204,
};
}
else if (typeof result === 'string') {
const logBody = withLogBody ? result : undefined;
return {
headers: {
'content-type': 'text/plain',
},
status: 200,
body: result,
logBody,
};
}
else {
if (result.body === undefined) {
return {
headers: result.headers ?? {},
status: result.status ?? 200,
};
}
else if (typeof result.body === 'string') {
const logBody = withLogBody ? result.body : undefined;
return {
headers: withContentType(result.headers, 'text/plain'),
status: result.status ?? 200,
body: result.body,
logBody,
};
}
else if (Buffer.isBuffer(result.body)) {
const logBody = withLogBody ? result.body.toString('base64') : undefined;
return {
headers: withContentType(result.headers, 'application/octet-stream'),
status: result.status ?? 200,
body: result.body,
logBody,
};
}
else {
const logBody = withLogBody ? result.body : undefined;
return {
headers: withContentType(result.headers, 'application/json'),
status: result.status ?? 200,
body: JSON.stringify(result.body),
logBody,
};
}
}
}
function withoutRequestBody(options) {
if ('json' in options) {
const { json, ...bodyless } = options;
return bodyless;
}
if ('body' in options) {
const { body, ...bodyless } = options;
return bodyless;
}
return options;
}
function requestBody(options) {
if ('json' in options) {
return options.json;
}
if ('body' in options) {
return options.body;
}
return undefined;
}
function withContentType(headers, contentType) {
if (!headers) {
return {
'content-type': contentType,
};
}
headers['content-type'] ??= contentType;
return headers;
}
function errorToResponse(e) {
const { body, statusCode: status } = e;
if (typeof body === 'string') {
return {
headers: {
'content-type': 'text/plain',
},
status: status ?? 500,
body,
};
}
else if (typeof body === 'object') {
return {
headers: {
'content-type': 'application/json',
},
status: status ?? 500,
body: JSON.stringify(body),
};
}
else {
return {
headers: {},
status: status ?? 500,
};
}
}
export function clientFromHeaders(headers) {
if (!headers) {
return {};
}
return {
operationId: headers['x-request-id'] ?? headers['request-id'],
clientId: headers['x-client-id'] ??
headers['x-installation-id'] ??
headers['client-id'] ??
headers['installation-id'],
...clientAddress(headers),
userAgent: headers['x-forwarded-for-user-agent'] ?? headers['user-agent'],
};
}
function clientAddress(headers) {
const xff = headers['x-forwarded-for'];
if (!xff) {
return undefined;
}
for (const a of xff.split(',')) {
const valid = validClientAddress(a.trim());
if (valid) {
return valid;
}
}
return undefined;
}
function validClientAddress(s) {
const version = isIP(s);
if (version === 4) {
return { clientIp: s };
}
if (version === 6) {
return normalizedIp6(s);
}
if (s.startsWith('[') && s.endsWith(']')) {
return normalizedIp6(s.slice(1, -1));
}
if (s.startsWith(':')) {
const clientPort = Number(s.slice(1));
if (Number.isFinite(clientPort)) {
return { clientPort };
}
return undefined;
}
const url = `ip://${s}/`;
if (URL.canParse(url)) {
return addressFromUrl(new URL(url));
}
return undefined;
}
function normalizedIp6(s) {
const mapped = mappedAddress(s);
if (mapped) {
return { clientIp: mapped };
}
const url = new URL(`ip://[${s}]/`);
return { clientIp: url.hostname.slice(1, -1) };
}
function addressFromUrl(url) {
const clientIp = url.hostname.startsWith('[') && url.hostname.endsWith(']')
? url.hostname.slice(1, -1)
: url.hostname;
const clientPort = url.port ? Number(url.port) : undefined;
if (isIP(clientIp)) {
return {
clientIp,
clientPort,
};
}
return undefined;
}
function mappedAddress(s) {
if (s.startsWith('::ffff:')) {
const ip4 = s.slice(7);
if (isIP(ip4) === 4) {
return ip4;
}
}
return undefined;
}
function eTagged(requestHeaders, response) {
if (response.headers.etag || !response.body) {
return response;
}
const etag = hash('sha1', response.body, 'base64').slice(0, -1);
response.headers.etag = etag;
if (requestHeaders['if-none-match'] === etag) {
response.status = 304;
delete response.body;
}
return response;
}
async function compressed(requestHeaders, response) {
if (!response.body || response.body.length < 32_768 || response.headers['content-encoding']) {
return response;
}
const encodings = requestHeaders['accept-encoding']?.split(',').map(e => e.trim());
if (!encodings?.includes('br')) {
return response;
}
return {
status: response.status,
headers: {
'content-encoding': 'br',
...response.headers,
},
body: await compress(response.body),
};
}
function compress(body) {
return new Promise((resolve, reject) => {
brotliCompress(body, {}, (error, result) => {
if (error) {
reject(error);
return;
}
resolve(result);
});
});
}
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{ hash } from 'node:crypto'\nimport { isIP } from 'node:net'\nimport { brotliCompress } from 'node:zlib'\nimport { Context, measure } from '../context.js'\nimport type { Json, ParsedUrl, ResponseHeaders, Result } from '../http.js'\nimport { ClientInfo, RootLogger } from './context.js'\nimport type { HttpHandler } from './http-registry.js'\n\nexport type Response = {\n    headers: { readonly [key: string]: string }\n    status: number\n    body?: string | Buffer\n}\n\ntype RequestOptions = BodylessRequestOptions | StringRequestOptions | JsonRequestOptions\n\ntype BodylessRequestOptions = {\n    uri: string\n    headers?: { readonly [key: string]: string }\n}\n\ntype StringRequestOptions = BodylessRequestOptions & {\n    body: string\n}\n\ntype JsonRequestOptions = BodylessRequestOptions & {\n    json: Json\n}\n\nexport async function executeRequest(\n    log: RootLogger,\n    context: Omit<Context, 'log'>,\n    handler: HttpHandler,\n    options: RequestOptions,\n    success: () => Promise<unknown>,\n): Promise<Response> {\n    const isShallow =\n        context.env.SHALLOW_KEY && options.headers?.['x-shallow'] === context.env.SHALLOW_KEY\n    const includeBodyInLogs = !handler.config?.excludeBodyFromLogs\n    const logRequest = includeBodyInLogs\n        ? { method: handler.method, ...options }\n        : withoutRequestBody({ method: handler.method, ...options })\n    let enrichedLog = log.enrichReserved({ meta: context.meta, request: logRequest })\n    if (isShallow) {\n        enrichedLog.trace('Shallow request')\n        return {\n            headers: {},\n            status: 204,\n        }\n    }\n    enrichedLog.trace('Request BEGIN')\n    try {\n        let parsedUrl:\n            | (ParsedUrl & {\n                  /** @ignore */\n                  __proto__: unknown\n                  /** @ignore */\n                  toString: () => string\n              })\n            | undefined\n        let pathSteps: string[] | undefined\n        const req = {\n            rawUrl: options.uri,\n            get url() {\n                if (parsedUrl) {\n                    return parsedUrl\n                }\n                const url = new URL(this.rawUrl)\n                parsedUrl = {\n                    // eslint-disable-next-line unicorn/no-null\n                    __proto__: null,\n                    hash: url.hash,\n                    host: url.host,\n                    hostname: url.hostname,\n                    href: url.href,\n                    origin: url.origin,\n                    password: url.password,\n                    pathname: url.pathname,\n                    port: url.port,\n                    protocol: url.protocol,\n                    search: url.search,\n                    get searchParams() {\n                        return url.searchParams\n                    },\n                    toJSON: () => url.toJSON(),\n                    toString: () => url.toString(),\n                    username: url.username,\n                    pathStepAt: (index: number) => {\n                        const steps = (pathSteps ??= url.pathname.split('/'))\n                        const step = steps[index + 1]\n                        if (!step) {\n                            throw Object.assign(\n                                new RangeError(`Path does not have a step at index ${index}.`),\n                                {\n                                    rawUrl: this.rawUrl,\n                                    pathName: url.pathname,\n                                    steps: steps.slice(1),\n                                },\n                            )\n                        }\n                        return step\n                    },\n                }\n                return parsedUrl\n            },\n            body: requestBody(options),\n            headers: options.headers ?? {},\n        }\n\n        const result = await measure(log.enrichReserved({ meta: context.meta }), 'execution', () =>\n            handler.entry({ ...context, log: enrichedLog }, req),\n        )\n\n        const response = resultToResponse(result, includeBodyInLogs)\n\n        if (context.signal.aborted) {\n            response.headers = {\n                'x-timeout': '1',\n                ...response.headers,\n            }\n        }\n\n        enrichedLog = enrichedLog.enrichReserved({\n            response: {\n                status: response.status,\n                headers: response.headers,\n                body: response.logBody,\n            },\n        })\n        if (response.status < 300) {\n            enrichedLog.debug('Request END')\n            await success()\n        } else {\n            enrichedLog.warn('Request END')\n        }\n        return await compressed(req.headers, eTagged(req.headers, response))\n    } catch (e) {\n        try {\n            const response = errorToResponse(e)\n            enrichedLog = enrichedLog.enrichReserved({ response })\n            enrichedLog.error('Request END', e)\n            return response\n        } catch (convertError) {\n            enrichedLog.error('Could not convert exception to error response.', convertError)\n            return {\n                headers: {},\n                status: 500,\n            }\n        }\n    }\n}\n\nfunction resultToResponse(result: Result, withLogBody: boolean): Response & { logBody?: unknown } {\n    if (!result) {\n        return {\n            headers: {},\n            status: 204,\n        }\n    } else if (typeof result === 'string') {\n        const logBody = withLogBody ? result : undefined\n        return {\n            headers: {\n                'content-type': 'text/plain',\n            },\n            status: 200,\n            body: result,\n            logBody,\n        }\n    } else {\n        if (result.body === undefined) {\n            return {\n                headers: result.headers ?? {},\n                status: result.status ?? 200,\n            }\n        } else if (typeof result.body === 'string') {\n            const logBody = withLogBody ? result.body : undefined\n            return {\n                headers: withContentType(result.headers, 'text/plain'),\n                status: result.status ?? 200,\n                body: result.body,\n                logBody,\n            }\n        } else if (Buffer.isBuffer(result.body)) {\n            const logBody = withLogBody ? result.body.toString('base64') : undefined\n            return {\n                headers: withContentType(result.headers, 'application/octet-stream'),\n                status: result.status ?? 200,\n                body: result.body,\n                logBody,\n            }\n        } else {\n            const logBody = withLogBody ? result.body : undefined\n            return {\n                headers: withContentType(result.headers, 'application/json'),\n                status: result.status ?? 200,\n                body: JSON.stringify(result.body),\n                logBody,\n            }\n        }\n    }\n}\n\nfunction withoutRequestBody(options: RequestOptions & { method: string }) {\n    if ('json' in options) {\n        const { json, ...bodyless } = options\n        return bodyless\n    }\n    if ('body' in options) {\n        const { body, ...bodyless } = options\n        return bodyless\n    }\n    return options\n}\n\nfunction requestBody(options: RequestOptions): Json | string | undefined {\n    if ('json' in options) {\n        return options.json\n    }\n    if ('body' in options) {\n        return options.body\n    }\n    return undefined\n}\n\nfunction withContentType(headers: ResponseHeaders | undefined, contentType: string) {\n    if (!headers) {\n        return {\n            'content-type': contentType,\n        }\n    }\n    headers['content-type'] ??= contentType\n    return headers\n}\n\nfunction errorToResponse(e: unknown): Response {\n    const { body, statusCode: status } = e as { body?: unknown; statusCode?: number }\n    if (typeof body === 'string') {\n        return {\n            headers: {\n                'content-type': 'text/plain',\n            },\n            status: status ?? 500,\n            body,\n        }\n    } else if (typeof body === 'object') {\n        return {\n            headers: {\n                'content-type': 'application/json',\n            },\n            status: status ?? 500,\n            body: JSON.stringify(body),\n        }\n    } else {\n        return {\n            headers: {},\n            status: status ?? 500,\n        }\n    }\n}\n\nexport function clientFromHeaders(\n    headers: { readonly [key: string]: string | undefined } | undefined,\n): ClientInfo {\n    if (!headers) {\n        return {}\n    }\n    return {\n        operationId: headers['x-request-id'] ?? headers['request-id'],\n        clientId:\n            headers['x-client-id'] ??\n            headers['x-installation-id'] ??\n            headers['client-id'] ??\n            headers['installation-id'],\n        ...clientAddress(headers),\n        userAgent: headers['x-forwarded-for-user-agent'] ?? headers['user-agent'],\n    }\n}\n\nfunction clientAddress(headers: { readonly [key: string]: string | undefined }) {\n    const xff = headers['x-forwarded-for']\n    if (!xff) {\n        return undefined\n    }\n    for (const a of xff.split(',')) {\n        const valid = validClientAddress(a.trim())\n        if (valid) {\n            return valid\n        }\n    }\n    return undefined\n}\n\nfunction validClientAddress(s: string) {\n    const version = isIP(s)\n    if (version === 4) {\n        return { clientIp: s }\n    }\n    if (version === 6) {\n        return normalizedIp6(s)\n    }\n    if (s.startsWith('[') && s.endsWith(']')) {\n        return normalizedIp6(s.slice(1, -1))\n    }\n    if (s.startsWith(':')) {\n        const clientPort = Number(s.slice(1))\n        if (Number.isFinite(clientPort)) {\n            return { clientPort }\n        }\n        return undefined\n    }\n    const url = `ip://${s}/`\n    if (URL.canParse(url)) {\n        return addressFromUrl(new URL(url))\n    }\n    return undefined\n}\n\nfunction normalizedIp6(s: string) {\n    const mapped = mappedAddress(s)\n    if (mapped) {\n        return { clientIp: mapped }\n    }\n    const url = new URL(`ip://[${s}]/`)\n    return { clientIp: url.hostname.slice(1, -1) }\n}\n\nfunction addressFromUrl(url: URL) {\n    const clientIp =\n        url.hostname.startsWith('[') && url.hostname.endsWith(']')\n            ? url.hostname.slice(1, -1)\n            : url.hostname\n    const clientPort = url.port ? Number(url.port) : undefined\n    if (isIP(clientIp)) {\n        return {\n            clientIp,\n            clientPort,\n        }\n    }\n    return undefined\n}\n\nfunction mappedAddress(s: string) {\n    if (s.startsWith('::ffff:')) {\n        const ip4 = s.slice(7)\n        if (isIP(ip4) === 4) {\n            return ip4\n        }\n    }\n    return undefined\n}\n\nfunction eTagged(\n    requestHeaders: { [key: string]: string },\n    response: Response & { headers: { [key: string]: string } },\n): Response {\n    if (response.headers.etag || !response.body) {\n        return response\n    }\n    const etag = hash('sha1', response.body, 'base64').slice(0, -1)\n    response.headers.etag = etag\n    if (requestHeaders['if-none-match'] === etag) {\n        response.status = 304\n        delete response.body\n    }\n    return response\n}\n\nasync function compressed(\n    requestHeaders: { [key: string]: string },\n    response: Response & { headers: { [key: string]: string } },\n): Promise<Response> {\n    if (!response.body || response.body.length < 32_768 || response.headers['content-encoding']) {\n        return response\n    }\n    const encodings = requestHeaders['accept-encoding']?.split(',').map(e => e.trim())\n    if (!encodings?.includes('br')) {\n        return response\n    }\n    return {\n        status: response.status,\n        headers: {\n            'content-encoding': 'br',\n            ...response.headers,\n        },\n        body: await compress(response.body),\n    }\n}\n\nfunction compress(body: string | Buffer) {\n    return new Promise<Buffer>((resolve, reject) => {\n        brotliCompress(body, {}, (error, result) => {\n            if (error) {\n                reject(error)\n                return\n            }\n            resolve(result)\n        })\n    })\n}\n"]}