1 files changed, 102 insertions, 0 deletions
diff --git a/src/headless/NodeHttpLib.ts b/src/headless/NodeHttpLib.ts
new file mode 100644
index 000000000..5cbb40ccf
--- /dev/null
+++ b/src/headless/NodeHttpLib.ts
@@ -0,0 +1,102 @@
+/*
+ This file is part of GNU Taler
+ (C) 2019 Taler Systems S.A.
+
+ GNU Taler is free software; you can redistribute it and/or modify it under the
+ terms of the GNU General Public License as published by the Free Software
+ Foundation; either version 3, or (at your option) any later version.
+
+ GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along with
+ GNU Taler; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+
+ SPDX-License-Identifier: AGPL3.0-or-later
+*/
+
+import { Headers, HttpRequestLibrary, HttpRequestOptions, HttpResponse } from "../util/http";
+import { RequestThrottler } from "../util/RequestThrottler";
+import Axios, { AxiosResponse } from "axios";
+
+/**
+ * Implementation of the HTTP request library interface for node.
+ */
+export class NodeHttpLib implements HttpRequestLibrary {
+  private throttle = new RequestThrottler();
+  private throttlingEnabled = true;
+
+  /**
+   * Set whether requests should be throttled.
+   */
+  setThrottling(enabled: boolean) {
+    this.throttlingEnabled = enabled;
+  }
+
+  private async req(
+    method: "post" | "get",
+    url: string,
+    body: any,
+    opt?: HttpRequestOptions,
+  ): Promise<HttpResponse> {
+    if (this.throttlingEnabled && this.throttle.applyThrottle(url)) {
+      throw Error("request throttled");
+    }
+    let resp: AxiosResponse;
+    try {
+      resp = await Axios({
+        method,
+        url: url,
+        responseType: "text",
+        headers: opt?.headers,
+        validateStatus: () => true,
+        transformResponse: (x) => x,
+        data: body,
+      });
+    } catch (e) {
+      throw e;
+    }
+    const respText = resp.data;
+    if (typeof respText !== "string") {
+      throw Error("unexpected response type");
+    }
+    const makeJson = async () => {
+      let responseJson;
+      try {
+        responseJson = JSON.parse(respText);
+      } catch (e) {
+        throw Error("Invalid JSON from HTTP response");
+      }
+      if (responseJson === null || typeof responseJson !== "object") {
+        throw Error("Invalid JSON from HTTP response");
+      }
+      return responseJson;
+    };
+    const headers = new Headers();
+    for (const hn of Object.keys(resp.headers)) {
+      headers.set(hn, resp.headers[hn]);
+    }
+    return {
+      headers,
+      status: resp.status,
+      text: async () => resp.data,
+      json: makeJson,
+    };
+  }
+
+  async get(
+    url: string,
+    opt?: HttpRequestOptions,
+  ): Promise<HttpResponse> {
+    return this.req("get", url, undefined, opt);
+  }
+
+  async postJson(
+    url: string,
+    body: any,
+    opt?: HttpRequestOptions,
+  ): Promise<HttpResponse> {
+    return this.req("post", url, body, opt);
+  }
+}
+\ No newline at end of file