Added directory/file exists

CHANGELOG.md

@@ -0,0 +1,8 @@
+# Changelog
+
+## 1.3.1-r3
+- Added directory/file exists
+- Fix unit tests
+
+## 1.3.1-r2
+- Initial release

src/__tests__/constants.test.js

@@ -1,4 +1,4 @@
-import {get_version, instance_id, package_json} from '../utils/constants';
+import { get_version, instance_id, package_json } from '../utils/constants';
 import * as uuid from 'uuid';
 
 test(`can read 'package.json'`, () => {
@@ -14,7 +14,7 @@ test(`'instance_id' is valid`, () => {
 
 test(`'version' can be read from 'package.json'`, () => {
   console.log(get_version());
-  expect(get_version()).toBe('1.3.1-r1');
+  expect(get_version()).toBe('1.3.1-r3');
 });
 
 test(`'version' can be overridden by environment variable`, () => {

src/__tests__/repertory.test.js

@@ -102,6 +102,8 @@ test('can create and remove a directory using api', async () => {
   );
   const api = repertory.create_api(conn);
   expect(await api.directory.create('/repertory_js')).toEqual(0);
+  expect(await api.directory.exists('/repertory_js')).toEqual(true);
+  expect(await api.file.exists('/repertory_js')).toEqual(false);
   expect(await api.directory.remove('/repertory_js')).toEqual(0);
 
   await conn.disconnect();
@@ -278,6 +280,8 @@ test('can upload and download a file using api', async () => {
     await calculate_sha256('repertory_test.dat')
   );
 
+  expect(await api.directory.exists('/repertory_test.dat')).toEqual(false);
+  expect(await api.file.exists('/repertory_test.dat')).toEqual(true);
   expect(await api.file.delete('/repertory_test.dat')).toEqual(0);
   fs.unlinkSync('repertory_test.dat');
 
@@ -518,3 +522,27 @@ test('can resume upload using api', async () => {
 
   await conn.disconnect();
 }, 60000);
+
+test('exists returns false if directory is not found', async () => {
+  const conn = await repertory.create_pool(
+    2,
+    TEST_HOST,
+    TEST_PORT,
+    TEST_PASSWORD
+  );
+  const api = repertory.create_api(conn);
+  expect(await api.directory.exists('/cow')).toEqual(false);
+  await conn.disconnect();
+});
+
+test('exists returns false if file is not found', async () => {
+  const conn = await repertory.create_pool(
+    2,
+    TEST_HOST,
+    TEST_PORT,
+    TEST_PASSWORD
+  );
+  const api = repertory.create_api(conn);
+  expect(await api.file.exists('/cow')).toEqual(false);
+  await conn.disconnect();
+});

src/index.js

@@ -13,6 +13,17 @@ export const create_api = (conn) => {
   return {
     directory: {
       create: async (remote_path) => ops.create_directory(conn, remote_path),
+      exists: async (remote_path) => {
+        try {
+          const info = await ops.get_file_attributes2(conn, remote_path);
+          return info.directory;
+        } catch (e) {
+          if (e.message.split(':')[1].trim() == '-2') {
+            return false;
+          }
+          throw new Error(e.message);
+        }
+      },
       list: async (remote_path, page_reader_cb) =>
         ops.list_directory(conn, remote_path, page_reader_cb),
       remove: async (remote_path) => ops.remove_directory(conn, remote_path),
@@ -43,6 +54,17 @@ export const create_api = (conn) => {
           overwrite,
           resume
         ),
+      exists: async (remote_path) => {
+        try {
+          const info = await ops.get_file_attributes2(conn, remote_path);
+          return !info.directory;
+        } catch (e) {
+          if (e.message.split(':')[1].trim() == '-2') {
+            return false;
+          }
+          throw new Error(e.message);
+        }
+      },
       open: async (remote_path) =>
         new file(conn, await ops.open_file(conn, remote_path), remote_path),
       upload: async (local_path, remote_path, progress_cb, overwrite, resume) =>

src/networking/connection.js

@@ -38,6 +38,7 @@ export default class connection {
             this.host_or_ip,
             (err) => {
               if (err) {
+                console.log(err);
                 return reject(err);
               }
               return resolve();
@@ -67,20 +68,32 @@ export default class connection {
         if (buffer.length >= size + 4) {
           const packet_data = buffer.slice(4, 4 + size);
           if (this.resolve) {
-            const reject = this.reject;
-            const resolve = this.resolve;
-
-            cleanup();
+            const complete = () => {
+              const reject = this.reject;
+              const resolve = this.resolve;
+              cleanup();
+              return {
+                reject,
+                resolve,
+              };
+            };
 
             const response = new packet(this.password);
             response.buffer = new Uint8Array(packet_data);
             response
               .decrypt()
               .then(() => {
-                resolve(response);
+                const { resolve } = complete();
+                if (resolve) {
+                  resolve(response);
+                }
               })
               .catch((e) => {
-                reject(e);
+                console.log(e);
+                const { reject } = complete();
+                if (reject) {
+                  reject(e);
+                }
               });
           }
         }
@@ -94,7 +107,10 @@ export default class connection {
         cleanup();
 
         this.connected = false;
-        reject(e);
+        console.log(e);
+        if (reject) {
+          reject(e);
+        }
       }
     });
 
@@ -105,7 +121,10 @@ export default class connection {
         cleanup();
 
         this.connected = false;
-        reject(new Error('socket closed'));
+        console.log('socket closed');
+        if (reject) {
+          reject(new Error('socket closed'));
+        }
       }
     });
   }

src/ops/index.js

@@ -312,6 +312,37 @@ export const get_file_attributes = async (
   }
 };
 
+export const get_file_attributes2 = async (
+  conn,
+  remote_path,
+  optional_thread_id
+) => {
+  try {
+    const request = new packet();
+    request.encode_utf8(remote_path);
+    request.encode_ui32(0);
+    request.encode_ui32(0);
+
+    const response = await conn.send(
+      '::RemoteFUSEGetattr',
+      request,
+      optional_thread_id
+    );
+    response.decode_ui32(); // Service flags
+
+    const result = response.decode_i32();
+    if (result === 0) {
+      return response.decode_stat();
+    }
+
+    return Promise.reject(
+      new Error(`'get_file_attributes2' failed: ${result}`)
+    );
+  } catch (err) {
+    return Promise.reject(new Error(`'get_file_attributes2' failed: ${err}`));
+  }
+};
+
 export const list_directory = async (conn, remote_path, page_reader_cb) => {
   const dir_snapshot = await _snapshot_directory(conn, remote_path);
   try {