add {enable,disable,is}_object_legal_hold[_enabled] APIs

Makefile

@@ -2,7 +2,7 @@
 
 check:
 	@pip install --user --upgrade pylint
-	@if python --version | grep -qi 'python 3'; then pylint --reports=no --score=no --disable=R0401 minio/*py; fi
+	@if python --version | grep -qi 'python 3'; then pylint --reports=no --score=no --disable=R0401,R0801 minio/*py; fi
 	@if python --version | grep -qi 'python 3'; then pylint --reports=no --score=no minio/credentials minio/select tests/functional; fi
 
 	@isort --diff --recursive .

docs/API.md

@@ -30,24 +30,24 @@ s3Client = Minio(
 )
 ```
 
-| Bucket operations                                         | Object operations                                 | Presigned operations                              | Bucket policy/notification/encryption operations                    |
-|:----------------------------------------------------------|:--------------------------------------------------|:--------------------------------------------------|:--------------------------------------------------------------------|
-| [`make_bucket`](#make_bucket)                             | [`get_object`](#get_object)                       | [`presigned_get_object`](#presigned_get_object)   | [`get_bucket_policy`](#get_bucket_policy)                           |
-| [`list_buckets`](#list_buckets)                           | [`put_object`](#put_object)                       | [`presigned_put_object`](#presigned_put_object)   | [`set_bucket_policy`](#set_bucket_policy)                           |
-| [`bucket_exists`](#bucket_exists)                         | [`copy_object`](#copy_object)                     | [`presigned_post_policy`](#presigned_post_policy) | [`delete_bucket_policy`](#delete_bucket_policy)                     |
-| [`remove_bucket`](#remove_bucket)                         | [`stat_object`](#stat_object)                     |                                                   | [`get_bucket_notification`](#get_bucket_notification)               |
-| [`list_objects`](#list_objects)                           | [`remove_object`](#remove_object)                 |                                                   | [`set_bucket_notification`](#set_bucket_notification)               |
-| [`get_bucket_versioning`](#get_bucket_versioning)         | [`remove_objects`](#remove_objects)               |                                                   | [`remove_all_bucket_notification`](#remove_all_bucket_notification) |
-| [`set_bucket_versioning`](#set_bucket_versioning)         | [`fput_object`](#fput_object)                     |                                                   | [`listen_bucket_notification`](#listen_bucket_notification)         |
-| [`delete_bucket_replication`](#delete_bucket_replication) | [`fget_object`](#fget_object)                     |                                                   | [`get_bucket_encryption`](#get_bucket_encryption)                   |
-| [`get_bucket_replication`](#get_bucket_replication)       | [`select_object_content`](#select_object_content) |                                                   | [`remove_all_bucket_notification`](#remove_all_bucket_notification) |
-| [`set_bucket_replication`](#set_bucket_replication)       | [`delete_object_tags`](#delete_object_tags)       |                                                   | [`put_bucket_encryption`](#put_bucket_encryption)                   |
-| [`delete_bucket_lifecycle`](#delete_bucket_lifecycle)     | [`get_object_tags`](#get_object_tags)             |                                                   | [`delete_bucket_encryption`](#delete_bucket_encryption)             |
-| [`get_bucket_lifecycle`](#get_bucket_lifecycle)           | [`set_object_tags`](#set_object_tags)             |                                                   |                                                                     |
-| [`set_bucket_lifecycle`](#set_bucket_lifecycle)           |                                                   |                                                   |                                                                     |
-| [`delete_bucket_tags`](#delete_bucket_tags)               |                                                   |                                                   |                                                                     |
-| [`get_bucket_tags`](#get_bucket_tags)                     |                                                   |                                                   |                                                                     |
-| [`set_bucket_tags`](#set_bucket_tags)                     |                                                   |                                                   |                                                                     |
+| Bucket operations                                         | Object operations                                               | Presigned operations                              | Bucket policy/notification/encryption operations                    |
+|:----------------------------------------------------------|:----------------------------------------------------------------|:--------------------------------------------------|:--------------------------------------------------------------------|
+| [`make_bucket`](#make_bucket)                             | [`get_object`](#get_object)                                     | [`presigned_get_object`](#presigned_get_object)   | [`get_bucket_policy`](#get_bucket_policy)                           |
+| [`list_buckets`](#list_buckets)                           | [`put_object`](#put_object)                                     | [`presigned_put_object`](#presigned_put_object)   | [`set_bucket_policy`](#set_bucket_policy)                           |
+| [`bucket_exists`](#bucket_exists)                         | [`copy_object`](#copy_object)                                   | [`presigned_post_policy`](#presigned_post_policy) | [`delete_bucket_policy`](#delete_bucket_policy)                     |
+| [`remove_bucket`](#remove_bucket)                         | [`stat_object`](#stat_object)                                   |                                                   | [`get_bucket_notification`](#get_bucket_notification)               |
+| [`list_objects`](#list_objects)                           | [`remove_object`](#remove_object)                               |                                                   | [`set_bucket_notification`](#set_bucket_notification)               |
+| [`get_bucket_versioning`](#get_bucket_versioning)         | [`remove_objects`](#remove_objects)                             |                                                   | [`remove_all_bucket_notification`](#remove_all_bucket_notification) |
+| [`set_bucket_versioning`](#set_bucket_versioning)         | [`fput_object`](#fput_object)                                   |                                                   | [`listen_bucket_notification`](#listen_bucket_notification)         |
+| [`delete_bucket_replication`](#delete_bucket_replication) | [`fget_object`](#fget_object)                                   |                                                   | [`get_bucket_encryption`](#get_bucket_encryption)                   |
+| [`get_bucket_replication`](#get_bucket_replication)       | [`select_object_content`](#select_object_content)               |                                                   | [`remove_all_bucket_notification`](#remove_all_bucket_notification) |
+| [`set_bucket_replication`](#set_bucket_replication)       | [`delete_object_tags`](#delete_object_tags)                     |                                                   | [`put_bucket_encryption`](#put_bucket_encryption)                   |
+| [`delete_bucket_lifecycle`](#delete_bucket_lifecycle)     | [`get_object_tags`](#get_object_tags)                           |                                                   | [`delete_bucket_encryption`](#delete_bucket_encryption)             |
+| [`get_bucket_lifecycle`](#get_bucket_lifecycle)           | [`set_object_tags`](#set_object_tags)                           |                                                   |                                                                     |
+| [`set_bucket_lifecycle`](#set_bucket_lifecycle)           | [`enable_object_legal_hold`](#enable_object_legal_hold)         |                                                   |                                                                     |
+| [`delete_bucket_tags`](#delete_bucket_tags)               | [`disable_object_legal_hold`](#disable_object_legal_hold)       |                                                   |                                                                     |
+| [`get_bucket_tags`](#get_bucket_tags)                     | [`is_object_legal_hold_enabled`](#is_object_legal_hold_enabled) |                                                   |                                                                     |
+| [`set_bucket_tags`](#set_bucket_tags)                     |                                                                 |                                                   |                                                                     |
 
 ## 1. Constructor
 
@@ -1245,6 +1245,66 @@ tags["User"] = "jsmith"
 client.set_object_tags("my-bucketname", "my-objectname", tags)
 ```
 
+<a name="enable_object_legal_hold"></a>
+
+### enable_object_legal_hold(bucket_name, object_name, version_id=None)
+
+Enable legal hold on an object.
+
+__Parameters__
+
+| Param         | Type  | Description                |
+|:--------------|:------|:---------------------------|
+| `bucket_name` | _str_ | Name of the bucket.        |
+| `object_name` | _str_ | Object name in the bucket. |
+| `version_id`  | _str_ | Version ID of the object.  |
+
+__Example__
+
+```py
+minio.enable_object_legal_hold("my-bucketname", "my-objectname")
+```
+
+<a name="disable_object_legal_hold"></a>
+
+### disable_object_legal_hold(bucket_name, object_name, version_id=None)
+
+Disable legal hold on an object.
+
+__Parameters__
+
+| Param         | Type  | Description                |
+|:--------------|:------|:---------------------------|
+| `bucket_name` | _str_ | Name of the bucket.        |
+| `object_name` | _str_ | Object name in the bucket. |
+| `version_id`  | _str_ | Version ID of the object.  |
+
+__Example__
+
+```py
+minio.disable_object_legal_hold("my-bucketname", "my-objectname")
+```
+
+<a name="is_object_legal_hold_enabled"></a>
+
+### is_object_legal_hold_enabled(bucket_name, object_name, version_id=None)
+
+Returns true if legal hold is enabled on an object.
+
+__Parameters__
+
+| Param         | Type  | Description                |
+|:--------------|:------|:---------------------------|
+| `bucket_name` | _str_ | Name of the bucket.        |
+| `object_name` | _str_ | Object name in the bucket. |
+| `version_id`  | _str_ | Version ID of the object.  |
+
+__Example__
+
+```py
+minio.is_object_legal_hold_enabled("my-bucketname", "my-objectname")
+```
+
 ## 4. Presigned operations
 
 <a name="presigned_get_object"></a>

examples/disable_object_legal_hold.py

@@ -0,0 +1,28 @@
+# -*- coding: utf-8 -*-
+# MinIO Python Library for Amazon S3 Compatible Cloud Storage.
+# Copyright (C) 2020 MinIO, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Note: YOUR-ACCESSKEYID, YOUR-SECRETACCESSKEY and my-bucketname are
+# dummy values, please replace them with original values.
+
+from minio import Minio
+
+client = Minio(
+    "play.min.io",
+    access_key="Q3AM3UQ867SPQQA43P2F",
+    secret_key="zuf+tfteSlswRu7BJ86wekitnifILbZam1KYY3TG",
+)
+
+client.disable_object_legal_hold("my-bucketname", "my-objectname")

examples/enable_object_legal_hold.py

@@ -0,0 +1,28 @@
+# -*- coding: utf-8 -*-
+# MinIO Python Library for Amazon S3 Compatible Cloud Storage.
+# Copyright (C) 2020 MinIO, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Note: YOUR-ACCESSKEYID, YOUR-SECRETACCESSKEY and my-bucketname are
+# dummy values, please replace them with original values.
+
+from minio import Minio
+
+client = Minio(
+    "play.min.io",
+    access_key="Q3AM3UQ867SPQQA43P2F",
+    secret_key="zuf+tfteSlswRu7BJ86wekitnifILbZam1KYY3TG",
+)
+
+client.enable_object_legal_hold("my-bucketname", "my-objectname")

examples/is_object_legal_hold_enabled.py

@@ -0,0 +1,28 @@
+# -*- coding: utf-8 -*-
+# MinIO Python Library for Amazon S3 Compatible Cloud Storage.
+# Copyright (C) 2020 MinIO, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Note: YOUR-ACCESSKEYID, YOUR-SECRETACCESSKEY and my-bucketname are
+# dummy values, please replace them with original values.
+
+from minio import Minio
+
+client = Minio(
+    "play.min.io",
+    access_key="Q3AM3UQ867SPQQA43P2F",
+    secret_key="zuf+tfteSlswRu7BJ86wekitnifILbZam1KYY3TG",
+)
+
+status = client.is_object_legal_hold_enabled("my-bucketname", "my-objectname")

minio/api.py

@@ -53,6 +53,7 @@
                       is_supported_header, is_valid_notification_config,
                       is_valid_policy_type, makedirs, md5sum_hash, quote,
                       read_part_data, sha256_hash, strptime_rfc3339)
+from .legalhold import LegalHold
 from .lifecycleconfig import LifecycleConfig
 from .parsers import (parse_error_response, parse_get_bucket_notification,
                       parse_list_buckets, parse_list_multipart_uploads,
@@ -2072,6 +2073,93 @@ def set_object_tags(self, bucket_name, object_name, tags, version_id=None):
             query_params=query_params,
         )
 
+    def enable_object_legal_hold(
+            self, bucket_name, object_name, version_id=None,
+    ):
+        """
+        Enable legal hold on an object.
+
+        :param bucket_name: Name of the bucket.
+        :param object_name: Object name in the bucket.
+        :param version_id: Version ID of the object.
+
+        Example::
+            minio.enable_object_legal_hold("my-bucketname", "my-objectname")
+        """
+        check_bucket_name(bucket_name)
+        check_non_empty_string(object_name)
+        body = marshal(LegalHold(True))
+        query_params = {"versionId", version_id} if version_id else {}
+        query_params["legal-hold"] = ""
+        self._execute(
+            "PUT",
+            bucket_name,
+            object_name=object_name,
+            body=body,
+            headers={"Content-MD5": md5sum_hash(body)},
+            query_params=query_params,
+        )
+
+    def disable_object_legal_hold(
+            self, bucket_name, object_name, version_id=None,
+    ):
+        """
+        Disable legal hold on an object.
+
+        :param bucket_name: Name of the bucket.
+        :param object_name: Object name in the bucket.
+        :param version_id: Version ID of the object.
+
+        Example::
+            minio.disable_object_legal_hold("my-bucketname", "my-objectname")
+        """
+        check_bucket_name(bucket_name)
+        check_non_empty_string(object_name)
+        body = marshal(LegalHold(False))
+        query_params = {"versionId", version_id} if version_id else {}
+        query_params["legal-hold"] = ""
+        self._execute(
+            "PUT",
+            bucket_name,
+            object_name=object_name,
+            body=body,
+            headers={"Content-MD5": md5sum_hash(body)},
+            query_params=query_params,
+        )
+
+    def is_object_legal_hold_enabled(
+            self, bucket_name, object_name, version_id=None,
+    ):
+        """
+        Returns true if legal hold is enabled on an object.
+
+        :param bucket_name: Name of the bucket.
+        :param object_name: Object name in the bucket.
+        :param version_id: Version ID of the object.
+
+        Example::
+            status = minio.is_object_legal_hold_enabled(
+                "my-bucketname", "my-objectname",
+            )
+        """
+        check_bucket_name(bucket_name)
+        check_non_empty_string(object_name)
+        query_params = {"versionId", version_id} if version_id else {}
+        query_params["legal-hold"] = ""
+        try:
+            response = self._execute(
+                "GET",
+                bucket_name,
+                object_name=object_name,
+                query_params=query_params,
+            )
+            legal_hold = unmarshal(LegalHold, response.data.decode())
+            return legal_hold.status
+        except S3Error as exc:
+            if exc.code != "NoSuchObjectLockConfiguration":
+                raise
+        return False
+
     def _list_objects(  # pylint: disable=too-many-arguments,too-many-branches
             self,
             bucket_name,

minio/legalhold.py

@@ -0,0 +1,45 @@
+# -*- coding: utf-8 -*-
+# MinIO Python Library for Amazon S3 Compatible Cloud Storage, (C)
+# 2020 MinIO, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Request/response of PutObjectLegalHold and GetObjectLegalHold S3 APIs."""
+
+from __future__ import absolute_import
+
+from .xml import Element, SubElement, findtext
+
+
+class LegalHold:
+    """Legal hold configuration."""
+
+    def __init__(self, status=False):
+        self._status = status
+
+    @property
+    def status(self):
+        """Get status."""
+        return self._status
+
+    @classmethod
+    def fromxml(cls, element):
+        """Create new object with values from XML element."""
+        status = findtext(element, "Status")
+        return cls(status == "ON")
+
+    def toxml(self, element):
+        """Convert to XML."""
+        element = Element("LegalHold")
+        SubElement(element, "Status", "ON" if self._status is True else "OFF")
+        return element