Add fail_if_missing flag to ensure source data exists

src/aibs_informatics_aws_utils/data_sync/file_system.py

@@ -198,6 +198,11 @@ def partition(
         size_bytes_exceeding_obj_nodes = []
 
         partitioned_nodes: List[Node] = []
+        logger.info(
+            f"Partitioning nodes with size_bytes_limit={size_bytes_limit} "
+            f"and object_count_limit={object_count_limit}"
+        )
+
         while unchecked_nodes:
             unchecked_node = unchecked_nodes.pop()
             if (size_bytes_limit and unchecked_node.size_bytes > size_bytes_limit) or (
@@ -219,6 +224,7 @@ def partition(
                 raise ValueError(msg)
             logger.warning(msg)
             partitioned_nodes.extend(size_bytes_exceeding_obj_nodes)
+        logger.info(f"Partitioned {len(partitioned_nodes)} nodes.")
         return partitioned_nodes
 
     @classmethod
@@ -326,7 +332,7 @@ def from_path(cls, path: str, **kwargs) -> S3FileSystem:
         return s3_root
 
 
-def get_file_system(path: Optional[Union[str, Path]]) -> BaseFileSystem:
+def get_file_system(path: Union[str, Path]) -> BaseFileSystem:
     if isinstance(path, str) and S3URI.is_valid(path):
         return S3FileSystem.from_path(path)
     elif isinstance(path, str) and EFSPath.is_valid(path):

src/aibs_informatics_aws_utils/data_sync/operations.py

@@ -20,7 +20,14 @@
 from aibs_informatics_core.utils.os_operations import find_all_paths
 
 from aibs_informatics_aws_utils.efs import get_local_path
-from aibs_informatics_aws_utils.s3 import Config, TransferConfig, delete_s3_path, sync_paths
+from aibs_informatics_aws_utils.s3 import (
+    Config,
+    TransferConfig,
+    delete_s3_path,
+    is_folder,
+    is_object,
+    sync_paths,
+)
 
 logger = get_logger(__name__)
 
@@ -45,6 +52,11 @@ def botocore_config(self) -> Config:
 
     def sync_local_to_s3(self, source_path: LocalPath, destination_path: S3URI):
         source_path = self.sanitize_local_path(source_path)
+        if not source_path.exists():
+            if self.config.fail_if_missing:
+                raise FileNotFoundError(f"Local path {source_path} does not exist")
+            self.logger.warning(f"Local path {source_path} does not exist")
+            return
         if source_path.is_dir():
             self.logger.info("local source path is folder. Adding suffix to destination path")
             destination_path = S3URI.build(
@@ -68,6 +80,13 @@ def sync_s3_to_local(self, source_path: S3URI, destination_path: LocalPath):
         self.logger.info(f"Downloading s3 content from {source_path} -> {destination_path}")
         start_time = datetime.now(tz=timezone.utc)
 
+        if not is_object(source_path) and not is_folder(source_path):
+            message = f"S3 path {source_path} does not exist as object or folder"
+            if self.config.fail_if_missing:
+                raise FileNotFoundError(message)
+            self.logger.warning(message)
+            return
+
         _sync_paths = sync_paths
 
         if self.config.require_lock:
@@ -113,6 +132,13 @@ def sync_local_to_local(self, source_path: LocalPath, destination_path: LocalPat
         destination_path = self.sanitize_local_path(destination_path)
         self.logger.info(f"Copying local content from {source_path} -> {destination_path}")
         start_time = datetime.now(tz=timezone.utc)
+
+        if not source_path.exists():
+            if self.config.fail_if_missing:
+                raise FileNotFoundError(f"Local path {source_path} does not exist")
+            self.logger.warning(f"Local path {source_path} does not exist")
+            return
+
         if self.config.retain_source_data:
             copy_path(source_path=source_path, destination_path=destination_path, exists_ok=True)
         else:
@@ -127,6 +153,14 @@ def sync_s3_to_s3(
         source_path_prefix: Optional[S3KeyPrefix] = None,
     ):
         self.logger.info(f"Syncing s3 content from {source_path} -> {destination_path}")
+
+        if not is_object(source_path) and not is_folder(source_path):
+            message = f"S3 path {source_path} does not exist as object or folder"
+            if self.config.fail_if_missing:
+                raise FileNotFoundError(message)
+            self.logger.warning(message)
+            return
+
         sync_paths(
             source_path=source_path,
             destination_path=destination_path,
@@ -200,6 +234,7 @@ def sync_data(
     require_lock: bool = False,
     force: bool = False,
     size_only: bool = False,
+    fail_if_missing: bool = True,
 ):
     request = DataSyncRequest(
         source_path=source_path,
@@ -210,6 +245,7 @@ def sync_data(
         require_lock=require_lock,
         force=force,
         size_only=size_only,
+        fail_if_missing=fail_if_missing,
     )
     return DataSyncOperations.sync_request(request=request)
 

src/aibs_informatics_aws_utils/s3.py

@@ -688,7 +688,7 @@ def process_transfer_requests(
     """
     transfer_responses = []
 
-    for request in transfer_requests:
+    for i, request in enumerate(transfer_requests):
         try:
             if isinstance(request, S3CopyRequest):
                 copy_s3_object(
@@ -729,6 +729,7 @@ def process_transfer_requests(
                         **kwargs,
                     )
             transfer_responses.append(S3TransferResponse(request, False))
+            self.logger.info(f"Processed s3 transfer request {i + 1} of {len(transfer_requests)}")
         except Exception as e:
             msg = f"Failed to copy {request.source_path} to {request.destination_path}: {e}"
             if not suppress_errors:
@@ -1046,7 +1047,6 @@ def should_sync(
                 dest_local_path, multipart_chunk_size_bytes, multipart_threshold_bytes
             )
     else:
-        logger.warning(f"Destination path {destination_path} does not exist as a file or object.")
         return True
 
     if isinstance(source_path, S3URI) and is_object(source_path):

test/aibs_informatics_aws_utils/data_sync/test_operations.py

@@ -1,6 +1,6 @@
 from pathlib import Path
 from test.aibs_informatics_aws_utils.base import AwsBaseTest
-from typing import Union
+from typing import Optional, Union
 
 import moto
 from aibs_informatics_core.models.aws.s3 import S3URI
@@ -25,20 +25,22 @@ def setUpLocalFS(self) -> Path:
         fs = self.tmp_path()
         return fs
 
-    def setUpBucket(self, bucket_name: str = None) -> str:
+    def setUpBucket(self, bucket_name: Optional[str] = None) -> str:
         bucket_name = bucket_name or self.DEFAULT_BUCKET_NAME
         self.s3_client.create_bucket(
             Bucket=bucket_name,
-            CreateBucketConfiguration={"LocationConstraint": self.DEFAULT_REGION},
+            CreateBucketConfiguration={"LocationConstraint": self.DEFAULT_REGION},  # type: ignore
         )
         return bucket_name
 
-    def put_object(self, key: str, content: str, bucket_name: str = None, **kwargs) -> S3URI:
+    def put_object(
+        self, key: str, content: str, bucket_name: Optional[str] = None, **kwargs
+    ) -> S3URI:
         bucket_name = bucket_name or self.DEFAULT_BUCKET_NAME
         self.s3_client.put_object(Bucket=bucket_name, Key=key, Body=content, **kwargs)
         return self.get_s3_path(key=key, bucket_name=bucket_name)
 
-    def get_object(self, key: str, bucket_name: str = None) -> str:
+    def get_object(self, key: str, bucket_name: Optional[str] = None) -> str:
         bucket_name = bucket_name or self.DEFAULT_BUCKET_NAME
         response = self.s3_client.get_object(Bucket=bucket_name, Key=key)
         return response["Body"].read().decode()
@@ -59,7 +61,7 @@ def s3_client(self):
     def s3_resource(self):
         return get_s3_resource(region=self.DEFAULT_REGION)
 
-    def get_s3_path(self, key: str, bucket_name: str = None) -> S3URI:
+    def get_s3_path(self, key: str, bucket_name: Optional[str] = None) -> S3URI:
         bucket_name = bucket_name or self.DEFAULT_BUCKET_NAME
         return S3URI.build(bucket_name=bucket_name, key=key)
 
@@ -102,6 +104,20 @@ def test__sync_data__s3_to_s3__file__succeeds__source_deleted(self):
         assert self.get_object(destination_path.key) == "hello"
         assert not is_object(source_path)
 
+    def test__sync_data__s3_to_s3__file__does_not_exist(self):
+        self.setUpBucket()
+        source_path = self.get_s3_path("source")
+        destination_path = self.get_s3_path("destination")
+        with self.assertRaises(FileNotFoundError):
+            sync_data(
+                source_path=source_path,
+                destination_path=destination_path,
+            )
+        sync_data(
+            source_path=source_path, destination_path=destination_path, fail_if_missing=False
+        )
+        assert not is_object(destination_path)
+
     def test__sync_data__local_to_local__folder__succeeds(self):
         fs = self.setUpLocalFS()
         source_path = fs / "source"
@@ -153,6 +169,20 @@ def test__sync_data__local_to_local__file__source_deleted(self):
         assert destination_path.read_text() == "hello"
         assert not source_path.exists()
 
+    def test__sync_data__local_to_local__file__does_not_exist(self):
+        fs = self.setUpLocalFS()
+        source_path = fs / "source"
+        destination_path = fs / "destination"
+        with self.assertRaises(FileNotFoundError):
+            sync_data(
+                source_path=source_path,
+                destination_path=destination_path,
+            )
+        sync_data(
+            source_path=source_path, destination_path=destination_path, fail_if_missing=False
+        )
+        assert not destination_path.exists()
+
     def test__sync_data__s3_to_local__folder__succeeds(self):
         fs = self.setUpLocalFS()
         self.setUpBucket()
@@ -223,6 +253,21 @@ def test__sync_data__s3_to_local__file__source_not_deleted_despite_flag(self):
         )
         self.assertPathsEqual(source_path, destination_path, 1)
 
+    def test__sync_data__s3_to_local__file__does_not_exist(self):
+        fs = self.setUpLocalFS()
+        self.setUpBucket()
+        source_path = self.get_s3_path("source")
+        destination_path = fs / "destination"
+        with self.assertRaises(FileNotFoundError):
+            sync_data(
+                source_path=source_path,
+                destination_path=destination_path,
+            )
+        sync_data(
+            source_path=source_path, destination_path=destination_path, fail_if_missing=False
+        )
+        assert not destination_path.exists()
+
     def test__sync_data__local_to_s3__folder__succeeds(self):
         fs = self.setUpLocalFS()
         self.setUpBucket()
@@ -264,6 +309,21 @@ def test__sync_data__local_to_s3__file__source_deleted(self):
         )
         assert not source_path.exists()
 
+    def test__sync_data__local_to_s3__file__does_not_exist(self):
+        fs = self.setUpLocalFS()
+        self.setUpBucket()
+        source_path = fs / "source"
+        destination_path = self.get_s3_path("destination")
+        with self.assertRaises(FileNotFoundError):
+            sync_data(
+                source_path=source_path,
+                destination_path=destination_path,
+            )
+        sync_data(
+            source_path=source_path, destination_path=destination_path, fail_if_missing=False
+        )
+        assert not is_object(destination_path)
+
     def assertPathsEqual(
         self, src_path: Union[Path, S3URI], dst_path: Union[Path, S3URI], expected_num_files: int
     ):