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@@ -0,0 +1,146 @@
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+/**
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+ * @author tlwr [toby@toby.codes]
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+ * @author n1474335 [n1474335@gmail.com]
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+ * @copyright Crown Copyright 2016
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+ * @license Apache-2.0
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+ */
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+
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+import Operation from "../Operation";
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+import OperationError from "../errors/OperationError";
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+
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+/**
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+ * HTTP request operation
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+ */
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+class HTTPRequest extends Operation {
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+
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+ /**
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+ * HTTPRequest constructor
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+ */
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+ constructor() {
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+ super();
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+
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+ this.name = "HTTP request";
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+ this.module = "Default";
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+ this.description = [
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+ "Makes an HTTP request and returns the response.",
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+ "<br><br>",
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+ "This operation supports different HTTP verbs like GET, POST, PUT, etc.",
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+ "<br><br>",
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+ "You can add headers line by line in the format <code>Key: Value</code>",
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+ "<br><br>",
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+ "The status code of the response, along with a limited selection of exposed headers, can be viewed by checking the 'Show response metadata' option. Only a limited set of response headers are exposed by the browser for security reasons.",
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+ ].join("\n");
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+ this.inputType = "string";
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+ this.outputType = "string";
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+ this.manualBake = true;
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+ this.args = [
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+ {
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+ "name": "Method",
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+ "type": "option",
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+ "value": [
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+ "GET", "POST", "HEAD",
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+ "PUT", "PATCH", "DELETE",
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+ "CONNECT", "TRACE", "OPTIONS"
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+ ]
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+ },
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+ {
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+ "name": "URL",
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+ "type": "string",
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+ "value": ""
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+ },
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+ {
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+ "name": "Headers",
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+ "type": "text",
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+ "value": ""
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+ },
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+ {
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+ "name": "Mode",
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+ "type": "option",
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+ "value": [
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+ "Cross-Origin Resource Sharing",
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+ "No CORS (limited to HEAD, GET or POST)",
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+ ]
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+ },
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+ {
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+ "name": "Show response metadata",
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+ "type": "boolean",
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+ "value": false
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+ }
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+ ];
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+ }
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+
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+ /**
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+ * @param {string} input
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+ * @param {Object[]} args
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+ * @returns {string}
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+ */
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+ run(input, args) {
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+ const [method, url, headersText, mode, showResponseMetadata] = args;
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+
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+ if (url.length === 0) return "";
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+
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+ const headers = new Headers();
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+ headersText.split(/\r?\n/).forEach(line => {
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+ line = line.trim();
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+
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+ if (line.length === 0) return;
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+
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+ const split = line.split(":");
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+ if (split.length !== 2) throw `Could not parse header in line: ${line}`;
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+
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+ headers.set(split[0].trim(), split[1].trim());
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+ });
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+
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+ const config = {
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+ method: method,
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+ headers: headers,
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+ mode: modeLookup[mode],
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+ cache: "no-cache",
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+ };
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+
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+ if (method !== "GET" && method !== "HEAD") {
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+ config.body = input;
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+ }
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+
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+ return fetch(url, config)
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+ .then(r => {
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+ if (r.status === 0 && r.type === "opaque") {
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+ throw new OperationError("Error: Null response. Try setting the connection mode to CORS.");
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+ }
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+
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+ if (showResponseMetadata) {
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+ let headers = "";
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+ for (const pair of r.headers.entries()) {
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+ headers += " " + pair[0] + ": " + pair[1] + "\n";
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+ }
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+ return r.text().then(b => {
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+ return "####\n Status: " + r.status + " " + r.statusText +
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+ "\n Exposed headers:\n" + headers + "####\n\n" + b;
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+ });
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+ }
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+ return r.text();
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+ })
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+ .catch(e => {
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+ throw new OperationError(e.toString() +
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+ "\n\nThis error could be caused by one of the following:\n" +
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+ " - An invalid URL\n" +
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+ " - Making a request to an insecure resource (HTTP) from a secure source (HTTPS)\n" +
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+ " - Making a cross-origin request to a server which does not support CORS\n");
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+ });
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+ }
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+
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+}
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+
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+
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+/**
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+ * Lookup table for HTTP modes
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+ *
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+ * @private
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+ */
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+const modeLookup = {
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+ "Cross-Origin Resource Sharing": "cors",
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+ "No CORS (limited to HEAD, GET or POST)": "no-cors",
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+};
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+
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+
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+export default HTTPRequest;
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