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"Vertica Airflow connection -> dbt profile mappings" | ||
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from .user_pass import VerticaUserPasswordProfileMapping | ||
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__all__ = ["VerticaUserPasswordProfileMapping"] |
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"Maps Airflow Vertica connections using user + password authentication to dbt profiles." | ||
from __future__ import annotations | ||
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from typing import Any | ||
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from ..base import BaseProfileMapping | ||
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class VerticaUserPasswordProfileMapping(BaseProfileMapping): | ||
""" | ||
Maps Airflow Vertica connections using user + password authentication to dbt profiles. | ||
https://docs.getdbt.com/reference/warehouse-setups/vertica-setup | ||
https://airflow.apache.org/docs/apache-airflow-providers-vertica/stable/connections/vertica.html | ||
""" | ||
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airflow_connection_type: str = "vertica" | ||
dbt_profile_type: str = "vertica" | ||
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required_fields = [ | ||
"host", | ||
"user", | ||
"password", | ||
"database", | ||
"schema", | ||
] | ||
secret_fields = [ | ||
"password", | ||
] | ||
airflow_param_mapping = { | ||
"host": "host", | ||
"user": "login", | ||
"password": "password", | ||
"port": "port", | ||
"schema": "schema", | ||
"database": "extra.database", | ||
"autocommit": "extra.autocommit", | ||
"backup_server_node": "extra.backup_server_node", | ||
"binary_transfer": "extra.binary_transfer", | ||
"connection_load_balance": "extra.connection_load_balance", | ||
"connection_timeout": "extra.connection_timeout", | ||
"disable_copy_local": "extra.disable_copy_local", | ||
"kerberos_host_name": "extra.kerberos_host_name", | ||
"kerberos_service_name": "extra.kerberos_service_name", | ||
"log_level": "extra.log_level", | ||
"log_path": "extra.log_path", | ||
"oauth_access_token": "extra.oauth_access_token", | ||
"request_complex_types": "extra.request_complex_types", | ||
"session_label": "extra.session_label", | ||
"ssl": "extra.ssl", | ||
"unicode_error": "extra.unicode_error", | ||
"use_prepared_statements": "extra.use_prepared_statements", | ||
"workload": "extra.workload", | ||
} | ||
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@property | ||
def profile(self) -> dict[str, Any | None]: | ||
"Gets profile. The password is stored in an environment variable." | ||
profile = { | ||
"port": 5433, | ||
**self.mapped_params, | ||
**self.profile_args, | ||
# password should always get set as env var | ||
"password": self.get_env_var_format("password"), | ||
} | ||
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return self.filter_null(profile) | ||
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@property | ||
def mock_profile(self) -> dict[str, Any | None]: | ||
"Gets mock profile. Defaults port to 5433." | ||
parent_mock = super().mock_profile | ||
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return { | ||
"port": 5433, | ||
**parent_mock, | ||
} |
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"Tests for the vertica profile." | ||
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from unittest.mock import patch | ||
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import pytest | ||
from airflow.models.connection import Connection | ||
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from cosmos.profiles import get_automatic_profile_mapping | ||
from cosmos.profiles.vertica.user_pass import ( | ||
VerticaUserPasswordProfileMapping, | ||
) | ||
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@pytest.fixture() | ||
def mock_vertica_conn(): # type: ignore | ||
""" | ||
Sets the connection as an environment variable. | ||
""" | ||
conn = Connection( | ||
conn_id="my_vertica_connection", | ||
conn_type="vertica", | ||
host="my_host", | ||
login="my_user", | ||
password="my_password", | ||
port=5433, | ||
schema="my_schema", | ||
extra='{"database": "my_database"}', | ||
) | ||
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with patch("airflow.hooks.base.BaseHook.get_connection", return_value=conn): | ||
yield conn | ||
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@pytest.fixture() | ||
def mock_vertica_conn_custom_port(): # type: ignore | ||
""" | ||
Sets the connection as an environment variable. | ||
""" | ||
conn = Connection( | ||
conn_id="my_vertica_connection", | ||
conn_type="vertica", | ||
host="my_host", | ||
login="my_user", | ||
password="my_password", | ||
port=7472, | ||
schema="my_schema", | ||
extra='{"database": "my_database"}', | ||
) | ||
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with patch("airflow.hooks.base.BaseHook.get_connection", return_value=conn): | ||
yield conn | ||
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def test_connection_claiming() -> None: | ||
""" | ||
Tests that the vertica profile mapping claims the correct connection type. | ||
""" | ||
# should only claim when: | ||
# - conn_type == vertica | ||
# and the following exist: | ||
# - host | ||
# - user | ||
# - password | ||
# - port | ||
# - database or database | ||
# - schema | ||
potential_values = { | ||
"conn_type": "vertica", | ||
"host": "my_host", | ||
"login": "my_user", | ||
"password": "my_password", | ||
"schema": "my_schema", | ||
"extra": '{"database": "my_database"}', | ||
} | ||
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# if we're missing any of the values, it shouldn't claim | ||
for key in potential_values: | ||
values = potential_values.copy() | ||
del values[key] | ||
conn = Connection(**values) # type: ignore | ||
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print("testing with", values) | ||
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with patch("airflow.hooks.base.BaseHook.get_connection", return_value=conn): | ||
profile_mapping = VerticaUserPasswordProfileMapping(conn) | ||
assert not profile_mapping.can_claim_connection() | ||
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# also test when there's no database | ||
conn = Connection(**potential_values) # type: ignore | ||
conn.extra = "" | ||
with patch("airflow.hooks.base.BaseHook.get_connection", return_value=conn): | ||
profile_mapping = VerticaUserPasswordProfileMapping(conn) | ||
assert not profile_mapping.can_claim_connection() | ||
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# if we have them all, it should claim | ||
conn = Connection(**potential_values) # type: ignore | ||
with patch("airflow.hooks.base.BaseHook.get_connection", return_value=conn): | ||
profile_mapping = VerticaUserPasswordProfileMapping(conn) | ||
assert profile_mapping.can_claim_connection() | ||
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def test_profile_mapping_selected( | ||
mock_vertica_conn: Connection, | ||
) -> None: | ||
""" | ||
Tests that the correct profile mapping is selected. | ||
""" | ||
profile_mapping = get_automatic_profile_mapping( | ||
mock_vertica_conn.conn_id, | ||
{"schema": "my_schema"}, | ||
) | ||
assert isinstance(profile_mapping, VerticaUserPasswordProfileMapping) | ||
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def test_mock_profile() -> None: | ||
""" | ||
Tests that the mock profile port value get set correctly. | ||
""" | ||
profile = VerticaUserPasswordProfileMapping("mock_conn_id") | ||
assert profile.mock_profile.get("port") == 5433 | ||
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def test_profile_mapping_keeps_custom_port(mock_vertica_conn_custom_port: Connection) -> None: | ||
profile = VerticaUserPasswordProfileMapping(mock_vertica_conn_custom_port.conn_id, {"schema": "my_schema"}) | ||
assert profile.profile["port"] == 7472 | ||
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def test_profile_args( | ||
mock_vertica_conn: Connection, | ||
) -> None: | ||
""" | ||
Tests that the profile values get set correctly. | ||
""" | ||
profile_mapping = get_automatic_profile_mapping( | ||
mock_vertica_conn.conn_id, | ||
profile_args={"schema": "my_schema"}, | ||
) | ||
assert profile_mapping.profile_args == { | ||
"schema": "my_schema", | ||
} | ||
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assert profile_mapping.profile == { | ||
"type": mock_vertica_conn.conn_type, | ||
"host": mock_vertica_conn.host, | ||
"user": mock_vertica_conn.login, | ||
"password": "{{ env_var('COSMOS_CONN_VERTICA_PASSWORD') }}", | ||
"port": mock_vertica_conn.port, | ||
"schema": "my_schema", | ||
"database": mock_vertica_conn.extra_dejson.get("database"), | ||
} | ||
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def test_profile_args_overrides( | ||
mock_vertica_conn: Connection, | ||
) -> None: | ||
""" | ||
Tests that you can override the profile values. | ||
""" | ||
profile_mapping = get_automatic_profile_mapping( | ||
mock_vertica_conn.conn_id, | ||
profile_args={"schema": "my_schema", "database": "my_db_override"}, | ||
) | ||
assert profile_mapping.profile_args == { | ||
"schema": "my_schema", | ||
"database": "my_db_override", | ||
} | ||
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assert profile_mapping.profile == { | ||
"type": mock_vertica_conn.conn_type, | ||
"host": mock_vertica_conn.host, | ||
"user": mock_vertica_conn.login, | ||
"password": "{{ env_var('COSMOS_CONN_VERTICA_PASSWORD') }}", | ||
"port": mock_vertica_conn.port, | ||
"database": "my_db_override", | ||
"schema": "my_schema", | ||
} | ||
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def test_profile_env_vars( | ||
mock_vertica_conn: Connection, | ||
) -> None: | ||
""" | ||
Tests that the environment variables get set correctly. | ||
""" | ||
profile_mapping = get_automatic_profile_mapping( | ||
mock_vertica_conn.conn_id, | ||
profile_args={"schema": "my_schema"}, | ||
) | ||
assert profile_mapping.env_vars == { | ||
"COSMOS_CONN_VERTICA_PASSWORD": mock_vertica_conn.password, | ||
} |