[plugin cli] Retry folder rename on windows eperm (#9279)

Backports PR #9260

**Commit 1:**
[plugin cli] Retry folder rename on windows eperm

* Original sha: 398662fc84
* Authored by Jonathan Budzenski <jon@jbudz.me> on 2016-11-29T20:05:19Z

src/cli_plugin/install/__tests__/rename.js

@@ -0,0 +1,72 @@
+import expect from 'expect.js';
+import sinon from 'sinon';
+import fs from 'fs';
+
+import { renamePlugin } from '../rename';
+
+describe('plugin folder rename', function () {
+  let renameStub;
+
+  beforeEach(function () {
+    renameStub = sinon.stub();
+  });
+
+  afterEach(function () {
+    fs.rename.restore();
+  });
+
+  it('should rethrow any exceptions', function () {
+    renameStub = sinon.stub(fs, 'rename', function (from, to, cb) {
+      cb({
+        code: 'error'
+      });
+    });
+
+    return renamePlugin('/foo/bar', '/bar/foo')
+    .catch(function (err) {
+      expect(err.code).to.be('error');
+      expect(renameStub.callCount).to.be(1);
+    });
+  });
+
+  it('should resolve if there are no errors', function () {
+    renameStub = sinon.stub(fs, 'rename', function (from, to, cb) {
+      cb();
+    });
+
+    return renamePlugin('/foo/bar', '/bar/foo')
+    .then(function (err) {
+      expect(renameStub.callCount).to.be(1);
+    })
+    .catch(function () {
+      throw new Error('We shouln\'t have any errors');
+    });
+  });
+
+  describe('Windows', function () {
+    let platform;
+    beforeEach(function () {
+      platform = Object.getOwnPropertyDescriptor(process, 'platform');
+      Object.defineProperty(process, 'platform', {
+        value: 'win32'
+      });
+    });
+    afterEach(function () {
+      Object.defineProperty(process, 'platform', platform);
+    });
+
+    it('should retry on Windows EPERM errors for up to 3 seconds', function () {
+      this.timeout(5000);
+      renameStub = sinon.stub(fs, 'rename', function (from, to, cb) {
+        cb({
+          code: 'EPERM'
+        });
+      });
+      return renamePlugin('/foo/bar', '/bar/foo')
+      .catch(function (err) {
+        expect(err.code).to.be('EPERM');
+        expect(renameStub.callCount).to.be.greaterThan(1);
+      });
+    });
+  });
+});

src/cli_plugin/install/install.js

@@ -2,8 +2,8 @@ import { download } from './download';
 import Promise from 'bluebird';
 import { cleanPrevious, cleanArtifacts } from './cleanup';
 import { extract, getPackData } from './pack';
+import { renamePlugin } from './rename';
 import { sync as rimrafSync } from 'rimraf';
-import { renameSync } from 'fs';
 import { existingInstall, rebuildCache, assertVersion } from './kibana';
 import mkdirp from 'mkdirp';
 
@@ -27,7 +27,7 @@ export default async function install(settings, logger) {
 
     assertVersion(settings);
 
-    renameSync(settings.workingPath, settings.plugins[0].path);
+    await renamePlugin(settings.workingPath, settings.plugins[0].path);
 
     await rebuildCache(settings, logger);
 

src/cli_plugin/install/rename.js

@@ -0,0 +1,21 @@
+import { rename } from 'fs';
+import { delay } from 'lodash';
+
+export function renamePlugin(workingPath, finalPath) {
+  return new Promise(function (resolve, reject) {
+    const start = Date.now();
+    const retryTime = 3000;
+    const retryDelay = 100;
+    rename(workingPath, finalPath, function retry(err) {
+      if (err) {
+        // In certain cases on Windows, such as running AV, plugin folders can be locked shortly after extracting
+        // Retry for up to retryTime seconds
+        const windowsEPERM = process.platform === 'win32' && err.code === 'EPERM';
+        const retryAvailable = Date.now() - start < retryTime;
+        if (windowsEPERM && retryAvailable) return delay(rename, retryDelay, workingPath, finalPath, retry);
+        reject(err);
+      }
+      resolve();
+    });
+  });
+}