S3 - create_multipart_upload - support tags (#4548)

moto/s3/models.py

@@ -330,9 +330,11 @@ class FakeKey(BaseModel):
 
 
 class FakeMultipart(BaseModel):
-    def __init__(self, key_name, metadata):
+    def __init__(self, key_name, metadata, storage=None, tags=None):
         self.key_name = key_name
         self.metadata = metadata
+        self.storage = storage
+        self.tags = tags
         self.parts = {}
         self.partlist = []  # ordered list of part ID's
         rand_b64 = base64.b64encode(os.urandom(UPLOAD_ID_BYTES))
@@ -1834,9 +1836,10 @@ class S3Backend(BaseBackend):
         bucket = self.get_bucket(bucket_name)
         return len(bucket.multiparts[multipart_id].parts) >= next_part_number_marker
 
-    def create_multipart_upload(self, bucket_name, key_name, metadata, storage_type):
-        multipart = FakeMultipart(key_name, metadata)
-        multipart.storage = storage_type
+    def create_multipart_upload(
+        self, bucket_name, key_name, metadata, storage_type, tags
+    ):
+        multipart = FakeMultipart(key_name, metadata, storage=storage_type, tags=tags)
 
         bucket = self.get_bucket(bucket_name)
         bucket.multiparts[multipart.id] = multipart

moto/s3/responses.py

@@ -2009,9 +2009,10 @@ class ResponseObject(_TemplateEnvironmentMixin, ActionAuthenticatorMixin):
 
         if body == b"" and "uploads" in query:
             metadata = metadata_from_headers(request.headers)
+            tagging = self._tagging_from_headers(request.headers)
             storage_type = request.headers.get("x-amz-storage-class", "STANDARD")
             multipart_id = self.backend.create_multipart_upload(
-                bucket_name, key_name, metadata, storage_type
+                bucket_name, key_name, metadata, storage_type, tagging
             )
 
             template = self.response_template(S3_MULTIPART_INITIATE_RESPONSE)
@@ -2039,6 +2040,7 @@ class ResponseObject(_TemplateEnvironmentMixin, ActionAuthenticatorMixin):
                 multipart=multipart,
             )
             key.set_metadata(multipart.metadata)
+            self.backend.set_key_tags(key, multipart.tags)
 
             template = self.response_template(S3_MULTIPART_COMPLETE_RESPONSE)
             headers = {}

tests/test_s3/test_s3_multipart.py

@@ -1,6 +1,7 @@
 from botocore.exceptions import ClientError
 from moto import mock_s3
 import boto3
+import os
 import pytest
 import sure  # pylint: disable=unused-import
 
@@ -52,3 +53,30 @@ def test_boto3_multipart_part_size():
     err["Message"].should.equal(
         "The specified upload does not exist. The upload ID may be invalid, or the upload may have been aborted or completed."
     )
+
+
+@mock_s3
+def test_multipart_upload_with_tags():
+    bucket = "mybucket"
+    key = "test/multipartuploadtag/file.txt"
+    tags = "a=b"
+
+    client = boto3.client("s3", region_name="us-east-1")
+    client.create_bucket(Bucket=bucket)
+
+    response = client.create_multipart_upload(Bucket=bucket, Key=key, Tagging=tags)
+    u = boto3.resource("s3").MultipartUpload(bucket, key, response["UploadId"])
+    parts = [
+        {
+            "ETag": u.Part(i).upload(Body=os.urandom(5 * (2 ** 20)))["ETag"],
+            "PartNumber": i,
+        }
+        for i in range(1, 3)
+    ]
+
+    u.complete(MultipartUpload={"Parts": parts})
+
+    # check tags
+    response = client.get_object_tagging(Bucket=bucket, Key=key)
+    actual = {t["Key"]: t["Value"] for t in response.get("TagSet", [])}
+    actual.should.equal({"a": "b"})