Fix some mypy issues

Split up hooks to expose the hook dict
Remove some odd imports

core/dbt/contracts/connection.py

@@ -3,7 +3,6 @@
 from dataclasses import dataclass, field
 from typing import (
     Any, ClassVar, Dict, Tuple, Iterable, Optional, NewType, List, Callable,
-    TypeVar
 )
 from typing_extensions import Protocol
 

core/dbt/hooks.py

@@ -1,8 +1,6 @@
 from hologram.helpers import StrEnum
 import json
 
-from dbt.contracts.graph.parsed import Hook
-
 from typing import Union, Dict, Any
 
 
@@ -21,9 +19,3 @@ def get_hook_dict(source: Union[str, Dict[str, Any]]) -> Dict[str, Any]:
         return json.loads(source)
     except ValueError:
         return {'sql': source}
-
-
-def get_hook(source, index):
-    hook_dict = get_hook_dict(source)
-    hook_dict.setdefault('index', index)
-    return Hook.from_dict(hook_dict)

core/dbt/parser/base.py

@@ -162,13 +162,17 @@ def default_schema(self):
     def default_database(self):
         return self.root_project.credentials.database
 
+    def get_fqn_prefix(self, path: str) -> List[str]:
+        no_ext = os.path.splitext(path)[0]
+        fqn = [self.project.project_name]
+        fqn.extend(dbt.utils.split_path(no_ext)[:-1])
+        return fqn
+
     def get_fqn(self, path: str, name: str) -> List[str]:
         """Get the FQN for the node. This impacts node selection and config
         application.
         """
-        no_ext = os.path.splitext(path)[0]
-        fqn = [self.project.project_name]
-        fqn.extend(dbt.utils.split_path(no_ext)[:-1])
+        fqn = self.get_fqn_prefix(path)
         fqn.append(name)
         return fqn
 

core/dbt/task/run.py

@@ -16,7 +16,7 @@
 
 import dbt.exceptions
 import dbt.flags
-from dbt.hooks import get_hook
+from dbt.hooks import get_hook_dict
 from dbt.ui.printer import \
     print_hook_start_line, \
     print_hook_end_line, \
@@ -26,6 +26,7 @@
 
 from dbt.compilation import compile_node
 from dbt.contracts.graph.compiled import CompileResultNode
+from dbt.contracts.graph.model_config import Hook
 from dbt.contracts.graph.parsed import ParsedHookNode
 from dbt.task.compile import CompileTask
 
@@ -76,6 +77,12 @@ def get_hooks_by_tags(
     return matched_nodes
 
 
+def get_hook(source, index):
+    hook_dict = get_hook_dict(source)
+    hook_dict.setdefault('index', index)
+    return Hook.from_dict(hook_dict)
+
+
 class RunTask(CompileTask):
     def __init__(self, args, config):
         super().__init__(args, config)