Convert axios auth to basic auth header in the axios util

x-pack/plugins/actions/server/lib/axios_utils.test.ts

@@ -339,6 +339,55 @@ describe('request', () => {
       `"Do not use \\"baseURL\\" in the creation of your axios instance because you will mostly break proxy"`
     );
   });
+
+  test('it converts the auth property to basic auth header', async () => {
+    await request({
+      axios,
+      url: '/test',
+      logger,
+      configurationUtilities,
+      auth: { username: 'username', password: 'password' },
+    });
+
+    expect(axiosMock).toHaveBeenCalledWith('/test', {
+      method: 'get',
+      httpAgent: undefined,
+      httpsAgent: expect.any(HttpsAgent),
+      proxy: false,
+      maxContentLength: 1000000,
+      timeout: 360000,
+      headers: { Authorization: `Basic ${Buffer.from('username:password').toString('base64')}` },
+    });
+  });
+
+  test('it does not override an authorization header if provided', async () => {
+    await request({
+      axios,
+      url: '/test',
+      logger,
+      configurationUtilities,
+      auth: { username: 'username', password: 'password' },
+      headers: {
+        'Content-Type': 'application/json',
+        'X-Test-Header': 'test',
+        Authorization: 'Bearer my_token',
+      },
+    });
+
+    expect(axiosMock).toHaveBeenCalledWith('/test', {
+      method: 'get',
+      httpAgent: undefined,
+      httpsAgent: expect.any(HttpsAgent),
+      proxy: false,
+      maxContentLength: 1000000,
+      timeout: 360000,
+      headers: {
+        'Content-Type': 'application/json',
+        'X-Test-Header': 'test',
+        Authorization: 'Bearer my_token',
+      },
+    });
+  });
 });
 
 describe('patch', () => {

x-pack/plugins/actions/server/lib/axios_utils.ts

@@ -18,6 +18,7 @@ import { Logger } from '@kbn/core/server';
 import { getCustomAgents } from './get_custom_agents';
 import { ActionsConfigurationUtilities } from '../actions_config';
 import { SSLSettings } from '../types';
+import { getBasicAuthHeader } from './get_basic_auth_header';
 
 export const request = async <T = unknown>({
   axios,
@@ -55,10 +56,20 @@ export const request = async <T = unknown>({
   const { maxContentLength, timeout: settingsTimeout } =
     configurationUtilities.getResponseSettings();
 
+  const { auth, ...restConfig } = config;
+
+  const headersWithBasicAuth =
+    auth != null
+      ? {
+          ...getBasicAuthHeader({ username: auth.username, password: auth.password }),
+          ...headers,
+        }
+      : headers;
+
   return await axios(url, {
-    ...config,
+    ...restConfig,
     method,
-    headers,
+    headers: headersWithBasicAuth,
     ...(data ? { data } : {}),
     // use httpAgent and httpsAgent and set axios proxy: false, to be able to handle fail on invalid certs
     httpAgent,