Run mypy as pre-commit

Note that mypy is the last item in the list of checks since flake8 is
going to catch e.g. syntax issues which should be addressed first.

Change-Id: Id58fb9e8ea454c10e502c96ad4c36788e7533318
Signed-off-by: Stephen Finucane <stephenfin@redhat.com>

.pre-commit-config.yaml

@@ -37,3 +37,46 @@ repos:
         entry: flake8
         files: '^.*\.py$'
         exclude: '^(doc|releasenotes|tools)/.*$'
+  - repo: https://github.com/pre-commit/mirrors-mypy
+    rev: v1.4.1
+    hooks:
+      - id: mypy
+        additional_dependencies:
+          - types-decorator
+          - types-PyYAML
+          - types-requests
+          - types-simplejson
+        # keep this in-sync with '[mypy] exclude' in 'setup.cfg'
+        exclude: |
+          (?x)(
+            openstack/tests/ansible/.*
+            | openstack/tests/functional/.*
+            | openstack/tests/unit/.*
+            | openstack/tests/fixtures.py
+            | openstack/accelerator/.*
+            | openstack/baremetal/.*
+            | openstack/baremetal_introspection/.*
+            | openstack/block_storage/.*
+            | openstack/cloud/.*
+            | openstack/clustering/.*
+            | openstack/compute/.*
+            | openstack/container_infrastructure_management/.*
+            | openstack/database/.*
+            | openstack/dns/.*
+            | openstack/fixture/.*
+            | openstack/identity/.*
+            | openstack/image/.*
+            | openstack/instance_ha/.*
+            | openstack/key_manager/.*
+            | openstack/load_balancer/.*
+            | openstack/message/.*
+            | openstack/network/.*
+            | openstack/object_store/.*
+            | openstack/orchestration/.*
+            | openstack/placement/.*
+            | openstack/shared_file_system/.*
+            | openstack/workflow/.*
+            | doc/.*
+            | examples/.*
+            | releasenotes/.*
+          )

setup.cfg

@@ -28,3 +28,48 @@ packages =
 [entry_points]
 console_scripts =
     openstack-inventory = openstack.cloud.cmd.inventory:main
+
+[mypy]
+show_column_numbers = true
+show_error_context = true
+ignore_missing_imports = true
+# follow_imports = normal
+follow_imports = skip
+incremental = true
+check_untyped_defs = true
+warn_unused_ignores = true
+# keep this in-sync with 'mypy.exclude' in '.pre-commit-config.yaml'
+# TODO(stephenfin) Eventually we should remove everything here except the
+# unit tests module
+exclude = (?x)(
+    openstack/tests/ansible
+    | openstack/tests/functional
+    | openstack/tests/unit
+    | openstack/tests/fixtures.py
+    | openstack/accelerator
+    | openstack/baremetal
+    | openstack/baremetal_introspection
+    | openstack/block_storage
+    | openstack/cloud
+    | openstack/clustering
+    | openstack/compute
+    | openstack/container_infrastructure_management
+    | openstack/database
+    | openstack/dns
+    | openstack/fixture
+    | openstack/identity
+    | openstack/image
+    | openstack/instance_ha
+    | openstack/key_manager
+    | openstack/load_balancer
+    | openstack/message
+    | openstack/network
+    | openstack/object_store
+    | openstack/orchestration
+    | openstack/placement
+    | openstack/shared_file_system
+    | openstack/workflow
+    | doc
+    | examples
+    | releasenotes
+  )