add snowflake support (#259)

.gitignore

@@ -45,6 +45,7 @@ nosetests.xml
 coverage.xml
 *,cover
 .hypothesis/
+test.env
 
 # Translations
 *.mo

CHANGELOG.md

@@ -1,3 +1,9 @@
+## dbt 0.7.0 (unreleased)
+
+#### New Features
+
+- dbt now supports [Snowflake](https://www.snowflake.net/) as a warehouse ([#259](https://github.com/analyst-collective/dbt/pull/259))
+
 ## dbt 0.6.2 (January 16, 2017)
 
 #### Changes

Dockerfile

@@ -1,4 +1,4 @@
-FROM python
+FROM python:3.5
 
 RUN apt-get update
 
@@ -8,11 +8,7 @@ RUN apt-get install -y python-dev python3-dev
 RUN pip install pip --upgrade
 RUN pip install virtualenv
 RUN pip install virtualenvwrapper
-
-COPY . /usr/src/app
+RUN pip install tox
 
 WORKDIR /usr/src/app
 RUN cd /usr/src/app
-RUN ./test/setup.sh
-
-

Makefile

@@ -2,15 +2,17 @@
 
 changed_tests := `git status --porcelain | grep '^\(M\| M\|A\| A\)' | awk '{ print $$2 }' | grep '\/test_[a-zA-Z_\-\.]\+.py'`
 
-test: test-unit test-integration
+test:
+	@echo "Full test run starting..."
+	@time docker-compose run test tox
 
 test-unit:
 	@echo "Unit test run starting..."
-	tox -e unit-py27,unit-py35
+	@time docker-compose run test tox -e unit-py27,unit-py35,pep8
 
 test-integration:
 	@echo "Integration test run starting..."
-	@docker-compose run test /usr/src/app/test/integration.sh
+	@time docker-compose run test tox -e integration-postgres-py27,integration-postgres-py35,integration-snowflake-py27,integration-snowflake-py35
 
 test-new:
 	@echo "Test run starting..."

circle.yml

@@ -1,6 +1,8 @@
 machine:
+  python:
+    version: 3.6.0
   post:
-    - pyenv global 2.7.9 3.5.0
+    - pyenv global 2.7.12 3.6.0
   hosts:
     database: 127.0.0.1
 
@@ -13,7 +15,7 @@ dependencies:
     - pip install --upgrade pip setuptools || true
     - pip install --upgrade tox tox-pyenv
   override:
-    - pyenv local 2.7.9 3.5.0
+    - pyenv local 2.7.12 3.6.0
 
 test:
   override:

dbt/adapters/cache.py

@@ -0,0 +1,5 @@
+import dbt.adapters.postgres as postgres
+
+
+def reset():
+    postgres.connection_cache = {}

dbt/adapters/factory.py

@@ -0,0 +1,35 @@
+import platform
+
+import dbt.exceptions
+
+from dbt.adapters.postgres import PostgresAdapter
+from dbt.adapters.redshift import RedshiftAdapter
+
+if platform.system() != 'Windows':
+    from dbt.adapters.snowflake import SnowflakeAdapter
+else:
+    SnowflakeAdapter = None
+
+
+def get_adapter(profile):
+    adapter_type = profile.get('type', None)
+
+    if platform.system() == 'Windows' and \
+       adapter_type == 'snowflake':
+        raise dbt.exceptions.NotImplementedException(
+            "ERROR: 'snowflake' is not supported on Windows.")
+
+    adapters = {
+        'postgres': PostgresAdapter,
+        'redshift': RedshiftAdapter,
+        'snowflake': SnowflakeAdapter,
+    }
+
+    adapter = adapters.get(adapter_type, None)
+
+    if adapter is None:
+        raise RuntimeError(
+            "Invalid adapter type {}!"
+            .format(adapter_type))
+
+    return adapter