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79 lines
2.7 KiB
79 lines
2.7 KiB
import { formatApiCall } from "utils/proxy/api-helpers";
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import createLogger from "utils/logger";
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import genericProxyHandler from "utils/proxy/handlers/generic";
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import widgets from "widgets/widgets";
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const logger = createLogger("servicesProxy");
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export default async function handler(req, res) {
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try {
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const { type } = req.query;
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const widget = widgets[type];
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if (!widget) {
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logger.debug("Unknown proxy service type: %s", type);
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return res.status(403).json({ error: "Unkown proxy service type" });
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}
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const serviceProxyHandler = widget.proxyHandler || genericProxyHandler;
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if (serviceProxyHandler instanceof Function) {
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// map opaque endpoints to their actual endpoint
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if (widget?.mappings) {
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const mapping = widget?.mappings?.[req.query.endpoint];
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const mappingParams = mapping?.params;
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const optionalParams = mapping?.optionalParams;
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const map = mapping?.map;
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const endpoint = mapping?.endpoint;
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const endpointProxy = mapping?.proxyHandler || serviceProxyHandler;
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if (!endpoint) {
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logger.debug("Unsupported service endpoint: %s", type);
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return res.status(403).json({ error: "Unsupported service endpoint" });
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}
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req.method = mapping?.method || "GET";
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if (mapping?.body) req.body = mapping?.body;
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req.query.endpoint = endpoint;
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if (req.query.segments) {
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const segments = JSON.parse(req.query.segments);
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req.query.endpoint = formatApiCall(endpoint, segments);
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}
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if (req.query.query && (mappingParams || optionalParams)) {
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const queryParams = JSON.parse(req.query.query);
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let filteredOptionalParams = [];
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if (optionalParams) filteredOptionalParams = optionalParams.filter((p) => queryParams[p] !== undefined);
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let params = [];
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if (mappingParams) params = params.concat(mappingParams);
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if (filteredOptionalParams) params = params.concat(filteredOptionalParams);
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const query = new URLSearchParams(params.map((p) => [p, queryParams[p]]));
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req.query.endpoint = `${req.query.endpoint}?${query}`;
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}
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if (mapping?.headers) {
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req.extraHeaders = mapping.headers;
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}
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if (endpointProxy instanceof Function) {
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return endpointProxy(req, res, map);
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}
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return serviceProxyHandler(req, res, map);
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}
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return serviceProxyHandler(req, res);
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}
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logger.debug("Unknown proxy service type: %s", type);
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return res.status(403).json({ error: "Unkown proxy service type" });
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} catch (e) {
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if (e) logger.error(e);
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return res.status(500).send({ error: "Unexpected error" });
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}
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}
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