From 89192923dfffd6fe09b0623bdfd31aa8198be078 Mon Sep 17 00:00:00 2001
From: Fariz Rahman <farizrahman4u@gmail.com>
Date: Thu, 7 Apr 2022 15:23:39 +0400
Subject: [PATCH] Set readonly=True by default on platform (#1583)

---
 hub/api/dataset.py          | 10 +++++++---
 hub/constants.py            |  4 ++++
 hub/core/dataset/dataset.py |  5 +++--
 3 files changed, 14 insertions(+), 5 deletions(-)

diff --git a/hub/api/dataset.py b/hub/api/dataset.py
index 1323543112..583412d2c2 100644
--- a/hub/api/dataset.py
+++ b/hub/api/dataset.py
@@ -7,7 +7,11 @@
 from hub.client.client import HubBackendClient
 from hub.client.log import logger
 from hub.core.dataset import Dataset, dataset_factory
-from hub.constants import DEFAULT_MEMORY_CACHE_SIZE, DEFAULT_LOCAL_CACHE_SIZE
+from hub.constants import (
+    DEFAULT_MEMORY_CACHE_SIZE,
+    DEFAULT_LOCAL_CACHE_SIZE,
+    DEFAULT_READONLY,
+)
 from hub.util.auto import get_most_common_extension
 from hub.util.bugout_reporter import feature_report_path, hub_reporter
 from hub.util.delete_entry import remove_path_from_backend
@@ -32,7 +36,7 @@ class dataset:
     @staticmethod
     def init(
         path: str,
-        read_only: bool = False,
+        read_only: bool = DEFAULT_READONLY,
         overwrite: bool = False,
         public: bool = False,
         memory_cache_size: int = DEFAULT_MEMORY_CACHE_SIZE,
@@ -209,7 +213,7 @@ def empty(
     @staticmethod
     def load(
         path: str,
-        read_only: bool = False,
+        read_only: bool = DEFAULT_READONLY,
         memory_cache_size: int = DEFAULT_MEMORY_CACHE_SIZE,
         local_cache_size: int = DEFAULT_LOCAL_CACHE_SIZE,
         creds: Optional[dict] = None,
diff --git a/hub/constants.py b/hub/constants.py
index 728f218899..6e3255e21b 100644
--- a/hub/constants.py
+++ b/hub/constants.py
@@ -128,3 +128,7 @@
 _NO_LINK_UPDATE = "___!@#_no_link_update_###"
 
 SAMPLE_INFO_TENSOR_MAX_CHUNK_SIZE = 4 * MB
+
+DEFAULT_READONLY = (
+    os.environ.get("HUB_DEFAULT_READONLY", "false").strip().lower() == "true"
+)
diff --git a/hub/core/dataset/dataset.py b/hub/core/dataset/dataset.py
index d82ccfd6aa..fe3569108e 100644
--- a/hub/core/dataset/dataset.py
+++ b/hub/core/dataset/dataset.py
@@ -13,12 +13,13 @@
 import numpy as np
 from hub.api.info import load_info
 from hub.client.log import logger
-from hub.constants import FIRST_COMMIT_ID
 from hub.constants import (
+    FIRST_COMMIT_ID,
     DEFAULT_MEMORY_CACHE_SIZE,
     DEFAULT_LOCAL_CACHE_SIZE,
     MB,
     SAMPLE_INFO_TENSOR_MAX_CHUNK_SIZE,
+    DEFAULT_READONLY,
 )
 from hub.core.fast_forwarding import ffw_dataset_meta
 from hub.core.index import Index
@@ -113,7 +114,7 @@ def __init__(
         storage: LRUCache,
         index: Optional[Index] = None,
         group_index: str = "",
-        read_only: bool = False,
+        read_only: bool = DEFAULT_READONLY,
         public: Optional[bool] = False,
         token: Optional[str] = None,
         verbose: bool = True,