Refactor imports to support loading dags for tests

Updates the imports for the dags and operators to support both "as
deployed" and "as tested" package configurations. This allows for a
simple test to be added that at least imorts and checks the dags to
ensure they contain steps.

A future refactor may eliminate the need for some/much of this by moving the
operators away from the plugin appraoch such that they can be statically
built into the airflow pod and used like a third party library instead
of being appended to the airflow plugins. For now though, this maintains
the status quo for the way these are used in a deployed way.

Change-Id: I437ff9c583358188e27de0e2f6987c38ca85ab2f

src/bin/shipyard_airflow/shipyard_airflow/dags/armada_deploy_site.py

@@ -13,11 +13,20 @@
 # limitations under the License.
 
 from airflow.models import DAG
+
+try:
     from airflow.operators import ArmadaGetReleasesOperator
     from airflow.operators import ArmadaGetStatusOperator
     from airflow.operators import ArmadaPostApplyOperator
-
     from config_path import config_path
+except ImportError:
+    from shipyard_airflow.plugins.armada_get_releases import \
+        ArmadaGetReleasesOperator
+    from shipyard_airflow.plugins.armada_get_status import \
+        ArmadaGetStatusOperator
+    from shipyard_airflow.plugins.armada_post_apply import \
+        ArmadaPostApplyOperator
+    from shipyard_airflow.dags.config_path import config_path
 
 
 def deploy_site_armada(parent_dag_name, child_dag_name, args):

src/bin/shipyard_airflow/shipyard_airflow/dags/common_step_factory.py

@@ -11,16 +11,31 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-from airflow.operators import ConcurrencyCheckOperator
-from airflow.operators import DeckhandRetrieveRenderedDocOperator
-from airflow.operators import DeploymentConfigurationOperator
-from airflow.operators import DeckhandCreateSiteActionTagOperator
-
 from airflow.operators.bash_operator import BashOperator
 from airflow.operators.python_operator import BranchPythonOperator
 from airflow.operators.python_operator import PythonOperator
 from airflow.operators.subdag_operator import SubDagOperator
 
+try:
+    # Operators are loaded from being registered to airflow.operators
+    # in a deployed fashion
+    from airflow.operators import ConcurrencyCheckOperator
+    from airflow.operators import DeckhandRetrieveRenderedDocOperator
+    from airflow.operators import DeploymentConfigurationOperator
+    from airflow.operators import DeckhandCreateSiteActionTagOperator
+except ImportError:
+    # for local testing, they are loaded from their source directory
+    from shipyard_airflow.plugins.concurrency_check_operator import \
+        ConcurrencyCheckOperator
+    from shipyard_airflow.plugins.deckhand_retrieve_rendered_doc import \
+        DeckhandRetrieveRenderedDocOperator
+    from shipyard_airflow.plugins.deployment_configuration_operator import \
+        DeploymentConfigurationOperator
+    from shipyard_airflow.plugins.deckhand_create_site_action_tag import \
+        DeckhandCreateSiteActionTagOperator
+
+try:
+    # modules reside in a flat directory when deployed with dags
     from armada_deploy_site import deploy_site_armada
     from config_path import config_path
     from destroy_node import destroy_server
@@ -29,6 +44,16 @@ from failure_handlers import step_failure_handler
     from preflight_checks import all_preflight_checks
     from validate_site_design import validate_site_design
     import dag_names as dn
+except ImportError:
+    # for testing, specify the qualified source directory
+    from shipyard_airflow.dags.armada_deploy_site import deploy_site_armada
+    from shipyard_airflow.dags.config_path import config_path
+    from shipyard_airflow.dags.destroy_node import destroy_server
+    from shipyard_airflow.dags.drydock_deploy_site import deploy_site_drydock
+    from shipyard_airflow.dags.failure_handlers import step_failure_handler
+    from shipyard_airflow.dags.preflight_checks import all_preflight_checks
+    from shipyard_airflow.dags.validate_site_design import validate_site_design
+    import shipyard_airflow.dags.dag_names as dn
 
 
 class CommonStepFactory(object):

src/bin/shipyard_airflow/shipyard_airflow/dags/deploy_site.py

@@ -16,7 +16,11 @@ from datetime import timedelta
 import airflow
 from airflow import DAG
 
+try:
     from common_step_factory import CommonStepFactory
+except ImportError:
+    from shipyard_airflow.dags.common_step_factory import CommonStepFactory
+
 """deploy_site
 
 the top-level orchestration DAG for deploying a site using the Undercloud

src/bin/shipyard_airflow/shipyard_airflow/dags/destroy_node.py

@@ -13,14 +13,29 @@
 # limitations under the License.
 
 from airflow.models import DAG
+
+try:
     from airflow.operators import DrydockDestroyNodeOperator
     from airflow.operators import PromenadeCheckEtcdOperator
     from airflow.operators import PromenadeClearLabelsOperator
     from airflow.operators import PromenadeDecommissionNodeOperator
     from airflow.operators import PromenadeDrainNodeOperator
     from airflow.operators import PromenadeShutdownKubeletOperator
-
     from config_path import config_path
+except ImportError:
+    from shipyard_airflow.plugins.drydock_destroy_nodes import \
+        DrydockDestroyNodeOperator
+    from shipyard_airflow.plugins.promenade_check_etcd import \
+        PromenadeCheckEtcdOperator
+    from shipyard_airflow.plugins.promenade_clear_labels import \
+        PromenadeClearLabelsOperator
+    from shipyard_airflow.plugins.promenade_decommission_node import \
+        PromenadeDecommissionNodeOperator
+    from shipyard_airflow.plugins.promenade_drain_node import \
+        PromenadeDrainNodeOperator
+    from shipyard_airflow.plugins.promenade_shutdown_kubelet import \
+        PromenadeShutdownKubeletOperator
+    from shipyard_airflow.dags.config_path import config_path
 
 
 def destroy_server(parent_dag_name, child_dag_name, args):

src/bin/shipyard_airflow/shipyard_airflow/dags/drydock_deploy_site.py

@@ -13,11 +13,20 @@
 # limitations under the License.
 
 from airflow.models import DAG
+
+try:
     from airflow.operators import DrydockNodesOperator
     from airflow.operators import DrydockPrepareSiteOperator
     from airflow.operators import DrydockVerifySiteOperator
-
     from config_path import config_path
+except ImportError:
+    from shipyard_airflow.plugins.drydock_nodes import \
+        DrydockNodesOperator
+    from shipyard_airflow.plugins.drydock_prepare_site import \
+        DrydockPrepareSiteOperator
+    from shipyard_airflow.plugins.drydock_verify_site import \
+        DrydockVerifySiteOperator
+    from shipyard_airflow.dags.config_path import config_path
 
 
 def deploy_site_drydock(parent_dag_name, child_dag_name, args):

src/bin/shipyard_airflow/shipyard_airflow/dags/preflight_checks.py

@@ -13,9 +13,14 @@
 # limitations under the License.
 
 from airflow.models import DAG
-from airflow.operators import UcpHealthCheckOperator
 
+try:
+    from airflow.operators import UcpHealthCheckOperator
     from config_path import config_path
+except ImportError:
+    from shipyard_airflow.plugins.ucp_preflight_check_operator import \
+        UcpHealthCheckOperator
+    from shipyard_airflow.dags.config_path import config_path
 
 
 def all_preflight_checks(parent_dag_name, child_dag_name, args):

src/bin/shipyard_airflow/shipyard_airflow/dags/redeploy_server.py

@@ -16,7 +16,11 @@ from datetime import timedelta
 import airflow
 from airflow import DAG
 
+try:
     from common_step_factory import CommonStepFactory
+except ImportError:
+    from shipyard_airflow.dags.common_step_factory import CommonStepFactory
+
 """redeploy_server
 
 The top-level orchestration DAG for redeploying a server using the Undercloud

src/bin/shipyard_airflow/shipyard_airflow/dags/update_site.py

@@ -16,7 +16,10 @@ from datetime import timedelta
 import airflow
 from airflow import DAG
 
+try:
     from common_step_factory import CommonStepFactory
+except ImportError:
+    from shipyard_airflow.dags.common_step_factory import CommonStepFactory
 
 """update_site
 

src/bin/shipyard_airflow/shipyard_airflow/dags/update_software.py

@@ -16,8 +16,12 @@ from datetime import timedelta
 import airflow
 from airflow import DAG
 
+try:
     from common_step_factory import CommonStepFactory
     from validate_site_design import SOFTWARE
+except ImportError:
+    from shipyard_airflow.dags.common_step_factory import CommonStepFactory
+    from shipyard_airflow.dags.validate_site_design import SOFTWARE
 
 """update_software
 

src/bin/shipyard_airflow/shipyard_airflow/dags/validate_site_design.py

@@ -13,13 +13,23 @@
 # limitations under the License.
 
 from airflow.models import DAG
+
+try:
     from airflow.operators import ArmadaValidateDesignOperator
     from airflow.operators import DeckhandValidateSiteDesignOperator
     from airflow.operators import DrydockValidateDesignOperator
     from airflow.operators import PromenadeValidateSiteDesignOperator
-
     from config_path import config_path
-
+except ImportError:
+    from shipyard_airflow.plugins.armada_validate_design import \
+        ArmadaValidateDesignOperator
+    from shipyard_airflow.plugins.deckhand_validate_site import \
+        DeckhandValidateSiteDesignOperator
+    from shipyard_airflow.plugins.drydock_validate_design import \
+        DrydockValidateDesignOperator
+    from shipyard_airflow.plugins.promenade_validate_site_design import \
+        PromenadeValidateSiteDesignOperator
+    from shipyard_airflow.dags.config_path import config_path
 
 BAREMETAL = 'baremetal'
 SOFTWARE = 'software'

src/bin/shipyard_airflow/shipyard_airflow/plugins/armada_base_operator.py

@@ -20,11 +20,20 @@ from airflow.utils.decorators import apply_defaults
 
 import armada.common.client as client
 import armada.common.session as session
+
+try:
     from get_k8s_pod_port_ip import get_pod_port_ip
+    import service_endpoint
     from service_token import shipyard_service_token
     from ucp_base_operator import UcpBaseOperator
-import service_endpoint
     from xcom_pusher import XcomPusher
+except ImportError:
+    from shipyard_airflow.plugins.get_k8s_pod_port_ip import get_pod_port_ip
+    from shipyard_airflow.plugins import service_endpoint
+    from shipyard_airflow.plugins.service_token import shipyard_service_token
+    from shipyard_airflow.plugins.ucp_base_operator import UcpBaseOperator
+    from shipyard_airflow.plugins.xcom_pusher import XcomPusher
+
 
 LOG = logging.getLogger(__name__)
 

src/bin/shipyard_airflow/shipyard_airflow/plugins/armada_get_releases.py

@@ -16,7 +16,11 @@ import logging
 from airflow.exceptions import AirflowException
 from airflow.plugins_manager import AirflowPlugin
 
+try:
     from armada_base_operator import ArmadaBaseOperator
+except ImportError:
+    from shipyard_airflow.plugins.armada_base_operator import \
+        ArmadaBaseOperator
 from armada.exceptions import api_exceptions as errors
 
 LOG = logging.getLogger(__name__)

src/bin/shipyard_airflow/shipyard_airflow/plugins/armada_get_status.py

@@ -16,7 +16,11 @@ import logging
 from airflow.exceptions import AirflowException
 from airflow.plugins_manager import AirflowPlugin
 
+try:
     from armada_base_operator import ArmadaBaseOperator
+except ImportError:
+    from shipyard_airflow.plugins.armada_base_operator import \
+        ArmadaBaseOperator
 from armada.exceptions import api_exceptions as errors
 
 LOG = logging.getLogger(__name__)

src/bin/shipyard_airflow/shipyard_airflow/plugins/armada_post_apply.py

@@ -16,7 +16,11 @@ import logging
 from airflow.exceptions import AirflowException
 from airflow.plugins_manager import AirflowPlugin
 
+try:
     from armada_base_operator import ArmadaBaseOperator
+except ImportError:
+    from shipyard_airflow.plugins.armada_base_operator import \
+        ArmadaBaseOperator
 from armada.exceptions import api_exceptions as errors
 
 LOG = logging.getLogger(__name__)

src/bin/shipyard_airflow/shipyard_airflow/plugins/armada_validate_design.py

@@ -16,7 +16,12 @@ import logging
 from airflow.plugins_manager import AirflowPlugin
 from airflow.exceptions import AirflowException
 
+try:
     from armada_base_operator import ArmadaBaseOperator
+except ImportError:
+    from shipyard_airflow.plugins.armada_base_operator import \
+        ArmadaBaseOperator
+
 from armada.exceptions import api_exceptions as errors
 
 LOG = logging.getLogger(__name__)

src/bin/shipyard_airflow/shipyard_airflow/plugins/deckhand_base_operator.py

@@ -19,9 +19,15 @@ from airflow.plugins_manager import AirflowPlugin
 from airflow.exceptions import AirflowException
 
 from deckhand.client import client as deckhand_client
+
+try:
     import service_endpoint
     from service_token import shipyard_service_token
     from ucp_base_operator import UcpBaseOperator
+except ImportError:
+    from shipyard_airflow.plugins import service_endpoint
+    from shipyard_airflow.plugins.service_token import shipyard_service_token
+    from shipyard_airflow.plugins.ucp_base_operator import UcpBaseOperator
 
 LOG = logging.getLogger(__name__)
 

src/bin/shipyard_airflow/shipyard_airflow/plugins/deckhand_create_site_action_tag.py

@@ -20,7 +20,11 @@ import subprocess  # nosec
 from airflow.plugins_manager import AirflowPlugin
 from airflow.exceptions import AirflowException
 
+try:
     from deckhand_base_operator import DeckhandBaseOperator
+except ImportError:
+    from shipyard_airflow.plugins.deckhand_base_operator import \
+        DeckhandBaseOperator
 
 FAILED_STATUSES = ('failed', 'upstream_failed')
 LOG = logging.getLogger(__name__)

src/bin/shipyard_airflow/shipyard_airflow/plugins/deckhand_retrieve_rendered_doc.py

@@ -16,7 +16,12 @@ import logging
 from airflow.plugins_manager import AirflowPlugin
 from airflow.exceptions import AirflowException
 
+try:
     from deckhand_base_operator import DeckhandBaseOperator
+except ImportError:
+    from shipyard_airflow.plugins.deckhand_base_operator import \
+        DeckhandBaseOperator
+
 
 LOG = logging.getLogger(__name__)
 

src/bin/shipyard_airflow/shipyard_airflow/plugins/deckhand_validate_site.py

@@ -19,7 +19,11 @@ import yaml
 from airflow.plugins_manager import AirflowPlugin
 from airflow.exceptions import AirflowException
 
+try:
     from deckhand_base_operator import DeckhandBaseOperator
+except ImportError:
+    from shipyard_airflow.plugins.deckhand_base_operator import \
+        DeckhandBaseOperator
 
 LOG = logging.getLogger(__name__)
 

src/bin/shipyard_airflow/shipyard_airflow/plugins/drydock_base_operator.py

@@ -25,20 +25,6 @@ import drydock_provisioner.drydock_client.client as client
 import drydock_provisioner.drydock_client.session as session
 from drydock_provisioner import error as errors
 
-try:
-    import service_endpoint
-except ImportError:
-    from shipyard_airflow.plugins import service_endpoint
-try:
-    from service_token import shipyard_service_token
-except ImportError:
-    from shipyard_airflow.plugins.service_token import shipyard_service_token
-
-try:
-    from ucp_base_operator import UcpBaseOperator
-except ImportError:
-    from shipyard_airflow.plugins.ucp_base_operator import UcpBaseOperator
-
 try:
     from drydock_errors import (
         DrydockClientUseFailureException,
@@ -46,6 +32,10 @@ try:
         DrydockTaskNotCreatedException,
         DrydockTaskTimeoutException
     )
+    import service_endpoint
+    from service_token import shipyard_service_token
+    from ucp_base_operator import UcpBaseOperator
+
 except ImportError:
     from shipyard_airflow.plugins.drydock_errors import (
         DrydockClientUseFailureException,
@@ -53,6 +43,9 @@ except ImportError:
         DrydockTaskNotCreatedException,
         DrydockTaskTimeoutException
     )
+    from shipyard_airflow.plugins import service_endpoint
+    from shipyard_airflow.plugins.service_token import shipyard_service_token
+    from shipyard_airflow.plugins.ucp_base_operator import UcpBaseOperator
 
 LOG = logging.getLogger(__name__)
 

src/bin/shipyard_airflow/shipyard_airflow/plugins/drydock_destroy_nodes.py

@@ -16,7 +16,11 @@ import time
 
 from airflow.plugins_manager import AirflowPlugin
 
+try:
     from drydock_base_operator import DrydockBaseOperator
+except ImportError:
+    from shipyard_airflow.plugins.drydock_base_operator import \
+        DrydockBaseOperator
 
 LOG = logging.getLogger(__name__)
 

src/bin/shipyard_airflow/shipyard_airflow/plugins/drydock_nodes.py

@@ -35,21 +35,15 @@ from shipyard_airflow.common.deployment_group.node_lookup import NodeLookup
 
 try:
     import check_k8s_node_status
-except ImportError:
-    from shipyard_airflow.plugins import check_k8s_node_status
-
-try:
     from drydock_base_operator import DrydockBaseOperator
-except ImportError:
-    from shipyard_airflow.plugins.drydock_base_operator import \
-        DrydockBaseOperator
-
-try:
     from drydock_errors import (
         DrydockTaskFailedException,
         DrydockTaskTimeoutException
     )
 except ImportError:
+    from shipyard_airflow.plugins import check_k8s_node_status
+    from shipyard_airflow.plugins.drydock_base_operator import \
+        DrydockBaseOperator
     from shipyard_airflow.plugins.drydock_errors import (
         DrydockTaskFailedException,
         DrydockTaskTimeoutException

src/bin/shipyard_airflow/shipyard_airflow/plugins/drydock_prepare_site.py

@@ -13,7 +13,11 @@
 # limitations under the License.
 from airflow.plugins_manager import AirflowPlugin
 
+try:
     from drydock_base_operator import DrydockBaseOperator
+except ImportError:
+    from shipyard_airflow.plugins.drydock_base_operator import \
+        DrydockBaseOperator
 
 
 class DrydockPrepareSiteOperator(DrydockBaseOperator):

src/bin/shipyard_airflow/shipyard_airflow/plugins/drydock_validate_design.py

@@ -19,7 +19,11 @@ import requests
 from airflow.plugins_manager import AirflowPlugin
 from airflow.exceptions import AirflowException
 
+try:
     from drydock_base_operator import DrydockBaseOperator
+except ImportError:
+    from shipyard_airflow.plugins.drydock_base_operator import \
+        DrydockBaseOperator
 
 LOG = logging.getLogger(__name__)
 

src/bin/shipyard_airflow/shipyard_airflow/plugins/drydock_verify_site.py

@@ -13,7 +13,11 @@
 # limitations under the License.
 from airflow.plugins_manager import AirflowPlugin
 
+try:
     from drydock_base_operator import DrydockBaseOperator
+except ImportError:
+    from shipyard_airflow.plugins.drydock_base_operator import \
+        DrydockBaseOperator
 
 
 class DrydockVerifySiteOperator(DrydockBaseOperator):

src/bin/shipyard_airflow/shipyard_airflow/plugins/promenade_base_operator.py

@@ -19,17 +19,11 @@ from airflow.exceptions import AirflowException
 
 try:
     import service_endpoint
-except ImportError:
-    from shipyard_airflow.plugins import service_endpoint
-
-try:
     from service_token import shipyard_service_token
-except ImportError:
-    from shipyard_airflow.plugins.service_token import shipyard_service_token
-
-try:
     from ucp_base_operator import UcpBaseOperator
 except ImportError:
+    from shipyard_airflow.plugins import service_endpoint
+    from shipyard_airflow.plugins.service_token import shipyard_service_token
     from shipyard_airflow.plugins.ucp_base_operator import UcpBaseOperator
 
 LOG = logging.getLogger(__name__)

src/bin/shipyard_airflow/shipyard_airflow/plugins/promenade_check_etcd.py

@@ -17,7 +17,11 @@ import time
 from airflow.plugins_manager import AirflowPlugin
 from airflow.exceptions import AirflowException
 
+try:
     from promenade_base_operator import PromenadeBaseOperator
+except ImportError:
+    from shipyard_airflow.plugins.promenade_base_operator import \
+        PromenadeBaseOperator
 
 LOG = logging.getLogger(__name__)
 

src/bin/shipyard_airflow/shipyard_airflow/plugins/promenade_clear_labels.py

@@ -17,7 +17,11 @@ import time
 from airflow.plugins_manager import AirflowPlugin
 from airflow.exceptions import AirflowException
 
+try:
     from promenade_base_operator import PromenadeBaseOperator
+except ImportError:
+    from shipyard_airflow.plugins.promenade_base_operator import \
+        PromenadeBaseOperator
 
 LOG = logging.getLogger(__name__)
 

src/bin/shipyard_airflow/shipyard_airflow/plugins/promenade_decommission_node.py

@@ -17,7 +17,11 @@ import time
 from airflow.plugins_manager import AirflowPlugin
 from airflow.exceptions import AirflowException
 
+try:
     from promenade_base_operator import PromenadeBaseOperator
+except ImportError:
+    from shipyard_airflow.plugins.promenade_base_operator import \
+        PromenadeBaseOperator
 
 LOG = logging.getLogger(__name__)
 

src/bin/shipyard_airflow/shipyard_airflow/plugins/promenade_drain_node.py

@@ -17,7 +17,11 @@ import time
 from airflow.plugins_manager import AirflowPlugin
 from airflow.exceptions import AirflowException
 
+try:
     from promenade_base_operator import PromenadeBaseOperator
+except ImportError:
+    from shipyard_airflow.plugins.promenade_base_operator import \
+        PromenadeBaseOperator
 
 LOG = logging.getLogger(__name__)
 

src/bin/shipyard_airflow/shipyard_airflow/plugins/promenade_shutdown_kubelet.py

@@ -17,7 +17,11 @@ import time
 from airflow.plugins_manager import AirflowPlugin
 from airflow.exceptions import AirflowException
 
+try:
     from promenade_base_operator import PromenadeBaseOperator
+except ImportError:
+    from shipyard_airflow.plugins.promenade_base_operator import \
+        PromenadeBaseOperator
 
 LOG = logging.getLogger(__name__)
 

src/bin/shipyard_airflow/shipyard_airflow/plugins/promenade_validate_site_design.py

@@ -22,9 +22,8 @@ from airflow.plugins_manager import AirflowPlugin
 try:
     from promenade_base_operator import PromenadeBaseOperator
 except ImportError:
-    from shipyard_airflow.plugins.promenade_base_operator import (
+    from shipyard_airflow.plugins.promenade_base_operator import \
         PromenadeBaseOperator
-    )
 
 LOG = logging.getLogger(__name__)
 

src/bin/shipyard_airflow/shipyard_airflow/plugins/ucp_base_operator.py

@@ -23,35 +23,22 @@ from airflow.plugins_manager import AirflowPlugin
 from airflow.utils.decorators import apply_defaults
 
 try:
+    from deckhand_client_factory import DeckhandClientFactory
     import service_endpoint
-except ImportError:
-    from shipyard_airflow.plugins import service_endpoint
-
-try:
     from get_k8s_logs import get_pod_logs
-except ImportError:
-    from shipyard_airflow.plugins.get_k8s_logs import get_pod_logs
-
-try:
     from get_k8s_logs import K8sLoggingException
-except ImportError:
-    from shipyard_airflow.plugins.get_k8s_logs import K8sLoggingException
-
-try:
     from xcom_puller import XcomPuller
 except ImportError:
+    from shipyard_airflow.plugins.deckhand_client_factory import \
+        DeckhandClientFactory
+    from shipyard_airflow.plugins import service_endpoint
+    from shipyard_airflow.plugins.get_k8s_logs import get_pod_logs
+    from shipyard_airflow.plugins.get_k8s_logs import K8sLoggingException
     from shipyard_airflow.plugins.xcom_puller import XcomPuller
 
 from shipyard_airflow.common.document_validators.document_validation_utils \
     import DocumentValidationUtils
 
-try:
-    from deckhand_client_factory import DeckhandClientFactory
-except ImportError:
-    from shipyard_airflow.plugins.deckhand_client_factory import (
-        DeckhandClientFactory
-    )
-
 LOG = logging.getLogger(__name__)
 
 
@@ -102,10 +89,11 @@ class UcpBaseOperator(BaseOperator):
         self.shipyard_conf = shipyard_conf
         self.start_time = datetime.now()
         self.xcom_push_flag = xcom_push
-        self.doc_utils = _get_document_util(self.shipyard_conf)
-        self.endpoints = service_endpoint.ServiceEndpoints(self.shipyard_conf)
 
     def execute(self, context):
+        # Setup values that depend on the shipyard configuration
+        self.doc_utils = _get_document_util(self.shipyard_conf)
+        self.endpoints = service_endpoint.ServiceEndpoints(self.shipyard_conf)
 
         # Execute UCP base function
         self.ucp_base(context)

src/bin/shipyard_airflow/shipyard_airflow/plugins/ucp_preflight_check_operator.py

@@ -22,17 +22,11 @@ from airflow.utils.decorators import apply_defaults
 
 try:
     import service_endpoint
-except ImportError:
-    from shipyard_airflow.plugins import service_endpoint
-
-try:
     from xcom_puller import XcomPuller
-except ImportError:
-    from shipyard_airflow.plugins.xcom_puller import XcomPuller
-
-try:
     from xcom_pusher import XcomPusher
 except ImportError:
+    from shipyard_airflow.plugins import service_endpoint
+    from shipyard_airflow.plugins.xcom_puller import XcomPuller
     from shipyard_airflow.plugins.xcom_pusher import XcomPusher
 
 LOG = logging.getLogger(__name__)

src/bin/shipyard_airflow/tests/unit/dags/test_dags.py

@@ -0,0 +1,33 @@
+# Copyright 2018 AT&T Intellectual Property.  All other rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+from airflow import DAG
+
+from shipyard_airflow.dags import deploy_site
+from shipyard_airflow.dags import update_site
+from shipyard_airflow.dags import update_software
+from shipyard_airflow.dags import redeploy_server
+
+
+def test_dags_load():
+    """assert that each dag is a DAG object after importing the modules
+
+    As these are the top level dags, the subdags and many operators
+    will be loaded as a result. This ensures that basic construction
+    is working for most of the workflow logic, however it tests nearly
+    none of the decision making.
+    """
+    for d in [deploy_site.dag, update_site.dag,
+              update_software.dag, redeploy_server.dag]:
+        assert isinstance(d, DAG)
+        assert d.task_count > 0