refactor: Switch default driver to psycopg3 (#471)

Related:

- #433

README.md

@@ -32,7 +32,7 @@ This target is tested with all actively supported [Python](https://devguide.pyth
 | password                        | False    | None                          | Password used to authenticate. Note if sqlalchemy_url is set this will be ignored.                                                                                                                                                                                                                       |
 | database                        | False    | None                          | Database name. Note if sqlalchemy_url is set this will be ignored.                                                                                                                                                                                                                                       |
 | sqlalchemy_url                  | False    | None                          | SQLAlchemy connection string. This will override using host, user, password, port, dialect, and all ssl settings. Note that you must escape password special characters properly. See https://docs.sqlalchemy.org/en/20/core/engines.html#escaping-special-characters-such-as-signs-in-passwords         |
-| dialect+driver                  | False    | postgresql+psycopg2           | Dialect+driver see https://docs.sqlalchemy.org/en/20/core/engines.html. Generally just leave this alone. Note if sqlalchemy_url is set this will be ignored.                                                                                                                                             |
+| dialect+driver                  | False    | postgresql+psycopg            | Dialect+driver see https://docs.sqlalchemy.org/en/20/core/engines.html. Generally just leave this alone. Note if sqlalchemy_url is set this will be ignored.                                                                                                                                             |
 | default_target_schema           | False    | melty                         | Postgres schema to send data to, example: tap-clickup                                                                                                                                                                                                                                                    |
 | activate_version                | False    | 1                             | If set to false, the tap will ignore activate version messages. If set to true, add_record_metadata must be set to true as well.                                                                                                                                                                         |
 | hard_delete                     | False    | 0                             | When activate version is sent from a tap this specefies if we should delete the records that don't match, or mark them with a date in the `_sdc_deleted_at` column. This config option is ignored if `activate_version` is set to false.                                                                 |

pyproject.toml

@@ -34,6 +34,7 @@ packages = [
 [tool.poetry.dependencies]
 python = ">=3.9"
 faker = {version = "~=30.0", optional = true}
+psycopg = {extras = ["binary"], version = "3.2.3"}
 psycopg2-binary = "2.9.10"
 sqlalchemy = "~=2.0"
 sshtunnel = "0.4.0"

target_postgres/target.py

@@ -150,7 +150,7 @@ def __init__(
         th.Property(
             "dialect+driver",
             th.StringType,
-            default="postgresql+psycopg2",
+            default="postgresql+psycopg",
             description=(
                 "Dialect+driver see "
                 + "https://docs.sqlalchemy.org/en/20/core/engines.html. "

target_postgres/tests/core.py

@@ -8,7 +8,7 @@
 
 def postgres_config():
     return {
-        "dialect+driver": "postgresql+psycopg2",
+        "dialect+driver": "postgresql+psycopg",
         "host": "localhost",
         "user": "postgres",
         "password": "postgres",
@@ -29,7 +29,7 @@ def postgres_config():
 
 def postgres_config_no_ssl():
     return {
-        "dialect+driver": "postgresql+psycopg2",
+        "dialect+driver": "postgresql+psycopg",
         "host": "localhost",
         "user": "postgres",
         "password": "postgres",

target_postgres/tests/test_sdk.py

@@ -62,7 +62,9 @@ class BasePostgresSDKTests:
     @pytest.fixture()
     def connection(self, runner):
         engine = create_engine(runner)
-        return engine.connect()
+        with engine.connect() as conn:
+            yield conn
+        engine.dispose()
 
 
 SDKTests = get_target_test_class(

target_postgres/tests/test_target_postgres.py

@@ -142,6 +142,7 @@ def verify_data(
                 sqlalchemy.text(f"SELECT COUNT(*) FROM {full_table_name}")
             )
             assert result.first()[0] == number_of_rows
+    engine.dispose()
 
 
 def test_sqlalchemy_url_config(postgres_config_no_ssl):
@@ -167,7 +168,7 @@ def test_sqlalchemy_url_config(postgres_config_no_ssl):
 def test_port_default_config():
     """Test that the default config is passed into the engine when the config doesn't provide it"""
     config = {
-        "dialect+driver": "postgresql+psycopg2",
+        "dialect+driver": "postgresql+psycopg",
         "host": "localhost",
         "user": "postgres",
         "password": "postgres",
@@ -186,12 +187,13 @@ def test_port_default_config():
         engine.url.render_as_string(hide_password=False)
         == f"{dialect_driver}://{user}:{password}@{host}:5432/{database}"
     )
+    engine.dispose()
 
 
 def test_port_config():
     """Test that the port config works"""
     config = {
-        "dialect+driver": "postgresql+psycopg2",
+        "dialect+driver": "postgresql+psycopg",
         "host": "localhost",
         "user": "postgres",
         "password": "postgres",
@@ -211,6 +213,7 @@ def test_port_config():
         engine.url.render_as_string(hide_password=False)
         == f"{dialect_driver}://{user}:{password}@{host}:5433/{database}"
     )
+    engine.dispose()
 
 
 # Test name would work well
@@ -402,6 +405,7 @@ def test_no_primary_keys(postgres_target):
     singer_file_to_target(file_name, postgres_target)
 
     verify_data(postgres_target, table_name, 16)
+    engine.dispose()
 
 
 def test_no_type(postgres_target):
@@ -511,6 +515,7 @@ def test_anyof(postgres_target):
             # {"anyOf":[{"type":"string"},{"type":"integer"},{"type":"null"}]}
             if column.name == "legacy_id":
                 assert isinstance(column.type, TEXT)
+    engine.dispose()
 
 
 def test_new_array_column(postgres_target):
@@ -621,6 +626,7 @@ def test_activate_version_hard_delete(postgres_config_no_ssl):
         assert result.rowcount == 9
 
     singer_file_to_target(file_name, pg_hard_delete_true)
+    engine.dispose()
 
     # Should remove the 2 records we added manually
     with engine.connect() as connection:
@@ -692,6 +698,7 @@ def test_activate_version_soft_delete(postgres_config_no_ssl):
         # South America row should not have been modified, but it would have been prior
         # to the fix mentioned in #204 and implemented in #240.
         assert south_america == result.first()._asdict()
+    engine.dispose()
 
 
 def test_activate_version_no_metadata(postgres_config_no_ssl):
@@ -742,6 +749,7 @@ def test_activate_version_deletes_data_properly(postgres_target):
     with engine.connect() as connection:
         result = connection.execute(sqlalchemy.text(f"SELECT * FROM {full_table_name}"))
         assert result.rowcount == 0
+    engine.dispose()
 
 
 def test_reserved_keywords(postgres_target):

target_postgres/tests/test_types.py

@@ -11,7 +11,7 @@ def connector():
     """Create a PostgresConnector instance."""
     return PostgresConnector(
         config={
-            "dialect+driver": "postgresql+psycopg2",
+            "dialect+driver": "postgresql+psycopg",
             "host": "localhost",
             "port": "5432",
             "user": "postgres",