Warp concurrent directories creation/deletion

Signed-off-by: Romy <35330373+romayalon@users.noreply.github.com>

add concurrency tests

Signed-off-by: Romy <35330373+romayalon@users.noreply.github.com>

Author: romayalon

config.js

@@ -765,6 +765,7 @@ config.NSFS_BUF_POOL_WARNING_TIMEOUT = 2 * 60 * 1000;
 config.NSFS_SEM_WARNING_TIMEOUT = 10 * 60 * 1000;
 // number of rename retries in case of deleted destination directory
 config.NSFS_RENAME_RETRIES = 10;
+config.NSFS_MKDIR_PATH_RETRIES = 3;
 
 config.NSFS_VERSIONING_ENABLED = true;
 config.NSFS_UPDATE_ISSUES_REPORT_ENABLED = true;

src/sdk/namespace_fs.js

@@ -1291,7 +1291,7 @@ class NamespaceFS {
         const same_inode = params.copy_source && copy_res === copy_status_enum.SAME_INODE;
         const is_dir_content = this._is_directory_content(file_path, params.key);
 
-        let stat = await target_file.stat(fs_context);
+        const stat = await target_file.stat(fs_context);
         this._verify_encryption(params.encryption, this._get_encryption_info(stat));
 
         // handle xattr
@@ -1335,15 +1335,14 @@ class NamespaceFS {
 
         if (!same_inode && !part_upload) {
             await this._move_to_dest(fs_context, upload_path, file_path, target_file, open_mode, params.key);
-            if (config.NSFS_TRIGGER_FSYNC) await nb_native().fs.fsync(fs_context, path.dirname(file_path));
         }
 
         // when object is a dir, xattr are set on the folder itself and the content is in .folder file
         if (is_dir_content) {
             if (params.copy_source) fs_xattr = await this._get_copy_source_xattr(params, fs_context, fs_xattr);
             await this._assign_dir_content_to_xattr(fs_context, fs_xattr, { ...params, size: stat.size }, copy_xattr);
         }
-        stat = await nb_native().fs.stat(fs_context, file_path);
+        stat.xattr = { ...stat.xattr, ...fs_xattr };
         const upload_info = this._get_upload_info(stat, fs_xattr && fs_xattr[XATTR_VERSION_ID]);
         return upload_info;
     }
@@ -1396,6 +1395,7 @@ class NamespaceFS {
                 } else {
                     await this._move_to_dest_version(fs_context, source_path, dest_path, target_file, key, open_mode);
                 }
+                if (config.NSFS_TRIGGER_FSYNC) await nb_native().fs.fsync(fs_context, path.dirname(dest_path));
                 break;
             } catch (err) {
                 retries -= 1;

src/test/unit_tests/jest_tests/test_nsfs_concurrency.test.js

@@ -0,0 +1,72 @@
+/* Copyright (C) 2016 NooBaa */
+'use strict';
+
+const path = require('path');
+const P = require('../../../util/promise');
+const fs_utils = require('../../../util/fs_utils');
+const NamespaceFS = require('../../../sdk/namespace_fs');
+const buffer_utils = require('../../../util/buffer_utils');
+const { TMP_PATH } = require('../../system_tests/test_utils');
+const { crypto_random_string } = require('../../../util/string_utils');
+const endpoint_stats_collector = require('../../../sdk/endpoint_stats_collector');
+
+function make_dummy_object_sdk(nsfs_config, uid, gid) {
+    return {
+        requesting_account: {
+            nsfs_account_config: nsfs_config && {
+                uid: uid || process.getuid(),
+                gid: gid || process.getgid(),
+                backend: '',
+            }
+        },
+        abort_controller: new AbortController(),
+        throw_if_aborted() {
+            if (this.abort_controller.signal.aborted) throw new Error('request aborted signal');
+        }
+    };
+}
+
+const DUMMY_OBJECT_SDK = make_dummy_object_sdk(true);
+describe('test nsfs concurrency', () => {
+    const tmp_fs_path = path.join(TMP_PATH, 'test_nsfs_concurrency');
+
+    const nsfs = new NamespaceFS({
+        bucket_path: tmp_fs_path,
+        bucket_id: '1',
+        namespace_resource_id: undefined,
+        access_mode: undefined,
+        versioning: 'DISABLED',
+        force_md5_etag: false,
+        stats: endpoint_stats_collector.instance(),
+    });
+
+    beforeEach(async () => {
+        await fs_utils.create_fresh_path(tmp_fs_path);
+    });
+
+    afterEach(async () => {
+        await fs_utils.folder_delete(tmp_fs_path);
+    });
+
+    it('multiple puts of the same nested key', async () => {
+        const bucket = 'bucket1';
+        const key = 'dir1/key1';
+        const res_etags = [];
+        for (let i = 0; i < 15; i++) {
+            const random_data = Buffer.from(String(crypto_random_string(7)));
+            const body = buffer_utils.buffer_to_read_stream(random_data);
+            nsfs.upload_object({ bucket: bucket, key: key, source_stream: body }, DUMMY_OBJECT_SDK)
+            .catch(err => {
+                console.log('put the same key error - ', err);
+                throw err;
+            }).then(res => {
+                console.log('upload res', res);
+                res_etags.push(res.etag);
+            });
+            await nsfs.delete_object({ bucket: bucket, key: key }, DUMMY_OBJECT_SDK).catch(err => console.log('delete the same key error - ', err));
+
+        }
+        await P.delay(5000);
+        expect(res_etags).toHaveLength(15);
+    }, 6000);
+});

src/util/native_fs_utils.js

@@ -68,15 +68,29 @@ async function _generate_unique_path(fs_context, tmp_dir_path) {
 // opens open_path on POSIX, and on GPFS it will open open_path parent folder
 async function open_file(fs_context, bucket_path, open_path, open_mode = config.NSFS_OPEN_READ_MODE,
         file_permissions = config.BASE_MODE_FILE) {
+    let retries = config.NSFS_MKDIR_PATH_RETRIES;
+
     const dir_path = path.dirname(open_path);
-    if ((open_mode === 'wt' || open_mode === 'w') && dir_path !== bucket_path) {
-        dbg.log1(`NamespaceFS._open_file: mode=${open_mode} creating dirs`, open_path, bucket_path);
-        await _make_path_dirs(open_path, fs_context);
-    }
-    dbg.log1(`NamespaceFS._open_file: mode=${open_mode}`, open_path);
-    // for 'wt' open the tmpfile with the parent dir path
     const actual_open_path = open_mode === 'wt' ? dir_path : open_path;
-    return nb_native().fs.open(fs_context, actual_open_path, open_mode, get_umasked_mode(file_permissions));
+    const should_create_path_dirs = (open_mode === 'wt' || open_mode === 'w') && dir_path !== bucket_path;
+    for (;;) {
+        try {
+            if (should_create_path_dirs) {
+                dbg.log1(`NamespaceFS._open_file: mode=${open_mode} creating dirs`, open_path, bucket_path);
+                await _make_path_dirs(open_path, fs_context);
+            }
+            dbg.log1(`NamespaceFS._open_file: mode=${open_mode}`, open_path);
+            // for 'wt' open the tmpfile with the parent dir path
+            const fd = await nb_native().fs.open(fs_context, actual_open_path, open_mode, get_umasked_mode(file_permissions));
+            return fd;
+        } catch (err) {
+            dbg.warn(`native_fs_utils.open_file Retrying retries=${retries} mode=${open_mode} open_path=${open_path} dir_path=${dir_path} actual_open_path=${actual_open_path}`, err);
+            if (err.code !== 'ENOENT') throw err;
+            // case of concurrennt deletion of the dir_path
+            if (retries <= 0 || !should_create_path_dirs) throw err;
+            retries -= 1;
+        }
+    }
 }
 
 /**