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Code copied from https://github.com/kaiobrito/multi-open-api-docs-sample
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| import merge from "lodash.merge"; | |
| import fetch from "node-fetch"; | |
| const fetchSchemas = (urls) => { | |
| const requests = urls.map((url) => | |
| fetch(url) | |
| .then((res) => res.json()) | |
| .catch(() => ({})) | |
| ); | |
| return Promise.all(requests); | |
| }; | |
| export const mergeSchemas = (urls) => | |
| fetchSchemas(urls).then((schemas) => merge({}, ...schemas)); |
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| import express from "express"; | |
| import { createProxyMiddleware } from "http-proxy-middleware"; | |
| const app = express(); | |
| const FOO_API_HOST = "http://localhost:8001"; | |
| const BAR_API_HOST = "http://localhost:8002"; | |
| const fooProxy = createProxyMiddleware("/api", { | |
| target: FOO_API_HOST, | |
| }); | |
| const barProxy = createProxyMiddleware("/api", { | |
| target: BAR_API_HOST, | |
| }); | |
| app.use("/api/foo", fooProxy); | |
| app.use("/api/bar", barProxy); |
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| app.get("/api/schema", async (req, res) => { | |
| res.json( | |
| await mergeSchemas([ | |
| `${FOO_API_HOST}/api/schema?format=openapi-json`, | |
| `${BAR_API_HOST}/api/schema?format=openapi-json`, | |
| ]) | |
| ); | |
| }); |
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| <!-- HTML for static distribution bundle build --> | |
| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="UTF-8" /> | |
| <title>Swagger UI</title> | |
| <link | |
| rel="stylesheet" | |
| type="text/css" | |
| href="https://unpkg.com/swagger-ui-dist@3.52.5/swagger-ui.css" | |
| /> | |
| <style> | |
| html { | |
| box-sizing: border-box; | |
| overflow: -moz-scrollbars-vertical; | |
| overflow-y: scroll; | |
| } | |
| *, | |
| *:before, | |
| *:after { | |
| box-sizing: inherit; | |
| } | |
| body { | |
| margin: 0; | |
| background: #fafafa; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <div id="swagger-ui"></div> | |
| <script | |
| src="https://unpkg.com/swagger-ui-dist@3/swagger-ui-bundle.js" | |
| charset="UTF-8" | |
| ></script> | |
| <script | |
| src="https://unpkg.com/swagger-ui-dist@3.52.5/swagger-ui-standalone-preset.js" | |
| charset="UTF-8" | |
| ></script> | |
| <script> | |
| window.onload = function () { | |
| // Begin Swagger UI call region | |
| const ui = SwaggerUIBundle({ | |
| url: "/api/schema/", | |
| dom_id: "#swagger-ui", | |
| deepLinking: true, | |
| presets: [SwaggerUIBundle.presets.apis, SwaggerUIStandalonePreset], | |
| plugins: [SwaggerUIBundle.plugins.DownloadUrl], | |
| layout: "StandaloneLayout", | |
| }); | |
| // End Swagger UI call region | |
| window.ui = ui; | |
| }; | |
| </script> | |
| </body> | |
| </html> |
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