IO: Improve BulkProcessor when running per-record operations

... by also checking `rowcount` for handling `INSERT OK, 0 rows`
responses.

CHANGES.md

@@ -2,6 +2,8 @@
 
 
 ## Unreleased
+- IO: Improved `BulkProcessor` when running per-record operations by
+  also checking `rowcount` for handling `INSERT OK, 0 rows` responses
 
 ## 2024/10/01 v0.0.27
 - MongoDB: Updated to pymongo 4.9

cratedb_toolkit/io/core.py

@@ -49,7 +49,7 @@ def failed_records(self) -> t.List[t.Dict[str, t.Any]]:
             return []
         errors: t.List[t.Dict[str, t.Any]] = []
         for record, status in zip(self.parameters, self.cratedb_bulk_result):
-            if status["rowcount"] == -2:
+            if status["rowcount"] != 1:
                 errors.append(record)
         return errors
 
@@ -143,12 +143,17 @@ def start(self) -> BulkMetrics:
             try:
                 cursor = self.connection.execute(statement=statement, parameters=operation.parameters)
                 self.connection.commit()
-                cratedb_bulk_result = getattr(cursor.context, "last_executemany_result", None)
-                bulk_response = BulkResponse(operation.parameters, cratedb_bulk_result)
-                failed_records = bulk_response.failed_records
-                count_success_local = bulk_response.success_count
-                self._metrics.count_success_total += bulk_response.success_count
-                self.progress_bar and self.progress_bar.update(n=bulk_response.success_count)
+                if cursor.rowcount > 0:
+                    cratedb_bulk_result = getattr(cursor.context, "last_result", None)
+                    bulk_response = BulkResponse(operation.parameters, cratedb_bulk_result)
+                    failed_records = bulk_response.failed_records
+                    count_success_local = bulk_response.success_count
+                    self._metrics.count_success_total += bulk_response.success_count
+                    self.progress_bar and self.progress_bar.update(n=bulk_response.success_count)
+                else:
+                    failed_records = operation.parameters
+                    count_success_local = 0
+                    self.progress_bar and self.progress_bar.update(n=1)
 
             # When a batch is of size one, an exception is raised.
             # Just signal the same condition as if a batch would have failed.
@@ -165,8 +170,10 @@ def start(self) -> BulkMetrics:
                 )
                 for record in failed_records:
                     try:
-                        self.connection.execute(statement=statement, parameters=record)
+                        cursor = self.connection.execute(statement=statement, parameters=record)
                         self.connection.commit()
+                        if cursor.rowcount != 1:
+                            raise IOError("Record has not been processed")
                         self._metrics.count_success_total += 1
                     except Exception as ex:
                         logger.error(f"Operation failed: {ex}")

cratedb_toolkit/io/dynamodb/copy.py

@@ -10,7 +10,6 @@
 from cratedb_toolkit.io.core import BulkProcessor
 from cratedb_toolkit.io.dynamodb.adapter import DynamoDBAdapter
 from cratedb_toolkit.model import DatabaseAddress
-from cratedb_toolkit.sqlalchemy.patch import monkeypatch_executemany
 from cratedb_toolkit.util import DatabaseAdapter
 from cratedb_toolkit.util.data import asbool
 
@@ -30,8 +29,6 @@ def __init__(
         progress: bool = False,
         debug: bool = True,
     ):
-        monkeypatch_executemany()
-
         cratedb_address = DatabaseAddress.from_string(cratedb_url)
         cratedb_sqlalchemy_url, cratedb_table_address = cratedb_address.decode()
         cratedb_table = cratedb_table_address.fullname

cratedb_toolkit/io/mongodb/copy.py

@@ -13,7 +13,6 @@
 from cratedb_toolkit.io.mongodb.adapter import mongodb_adapter_factory
 from cratedb_toolkit.io.mongodb.transform import TransformationManager
 from cratedb_toolkit.model import DatabaseAddress
-from cratedb_toolkit.sqlalchemy.patch import monkeypatch_executemany
 from cratedb_toolkit.util import DatabaseAdapter
 
 logger = logging.getLogger(__name__)
@@ -33,8 +32,6 @@ def __init__(
         progress: bool = False,
         debug: bool = True,
     ):
-        monkeypatch_executemany()
-
         self.mongodb_uri = URL(mongodb_url)
         self.cratedb_uri = URL(cratedb_url)
 

pyproject.toml

@@ -101,7 +101,7 @@ dependencies = [
   "python-dotenv<2",
   "python-slugify<9",
   "pyyaml<7",
-  "sqlalchemy-cratedb>=0.37,<1",
+  "sqlalchemy-cratedb>=0.40,<1",
   "sqlparse<0.6",
   "tqdm<5",
   'typing-extensions<5; python_version <= "3.7"',

tests/io/mongodb/test_copy.py

@@ -325,7 +325,7 @@ def test_mongodb_copy_filesystem_bson(caplog, cratedb):
     assert timestamp_type == "bigint"
 
 
-def test_mongodb_copy_http_json_relaxed(caplog, cratedb):
+def test_mongodb_copy_http_json_relaxed_books(caplog, cratedb):
     """
     Verify MongoDB Extended JSON -> CrateDB data transfer, when source file is on HTTP.
     """
@@ -355,3 +355,45 @@ def test_mongodb_copy_http_json_relaxed(caplog, cratedb):
         "Charlie Collins",
         "Robi Sen",
     ]
+
+
+def test_mongodb_copy_http_json_relaxed_products(caplog, cratedb):
+    """
+    Verify MongoDB Extended JSON -> CrateDB data transfer, when source file is on HTTP.
+
+    `datasets/products.json` includes one invalid record.
+    """
+
+    # Define source and target URLs.
+    json_resource = "https+bson://github.com/ozlerhakan/mongodb-json-files/raw/master/datasets/products.json"
+    cratedb_url = f"{cratedb.get_connection_url()}/testdrive/demo"
+
+    # Run transfer command.
+    jqlang_transformation = """
+    .[] |= (
+      select(true)
+      | if (.for) then .for |= to_array end
+      | if (.type) then .type |= to_array end
+      | if (.limits.data.n) then .limits.data.n |= tostring end
+      | if (.limits.sms.n) then .limits.sms.n |= tostring end
+      | if (.limits.voice.n) then .limits.voice.n |= tostring end
+    )
+    """
+    transformation = TransformationProject().add(
+        CollectionTransformation(
+            address=CollectionAddress(container="datasets", name="products"),
+            pre=MokshaTransformation().jq(jqlang_transformation),
+        )
+    )
+    mongodb_copy(json_resource, cratedb_url, transformation=transformation)
+
+    # Verify metadata in target database.
+    assert cratedb.database.table_exists("testdrive.demo") is True
+    assert cratedb.database.refresh_table("testdrive.demo") is True
+    assert cratedb.database.count_records("testdrive.demo") == 10
+
+    # Verify content in target database.
+    results = cratedb.database.run_sql("SELECT * FROM testdrive.demo WHERE data['_id'] = 'ac3';", records=True)
+    assert results[0]["data"]["name"] == "AC3 Phone"
+
+    assert "Bulk processor metrics: BulkMetrics(count_success_total=10, count_error_total=1" in caplog.text