Remove usage of dbt.deprecations in dbt/adapters, enable core & adapter-specific

.changes/unreleased/Under the Hood-20231116-174251.yaml

@@ -0,0 +1,7 @@
+kind: Under the Hood
+body: Remove usage of dbt.deprecations in dbt/adapters, enable core & adapter-specific
+  event types and protos
+time: 2023-11-16T17:42:51.005023-05:00
+custom:
+  Author: michelleark
+  Issue: 8927 8918

.pre-commit-config.yaml

@@ -1,7 +1,7 @@
 # Configuration for pre-commit hooks (see https://pre-commit.com/).
 # Eventually the hooks described here will be run as tests before merging each PR.
 
-exclude: ^(core/dbt/docs/build/|core/dbt/common/events/types_pb2.py)
+exclude: ^(core/dbt/docs/build/|core/dbt/common/events/types_pb2.py|core/dbt/events/core_types_pb2.py|core/dbt/adapters/events/adapter_types_pb2.py)
 
 # Force all unspecified python hooks to run python 3.8
 default_language_version:

Makefile

@@ -42,6 +42,15 @@ dev: dev_req ## Installs dbt-* packages in develop mode along with development d
 proto_types:  ## generates google protobuf python file from types.proto
 	protoc -I=./core/dbt/common/events --python_out=./core/dbt/common/events ./core/dbt/common/events/types.proto
 
+.PHONY: core_proto_types
+core_proto_types:  ## generates google protobuf python file from core_types.proto
+	protoc -I=./core/dbt/events --python_out=./core/dbt/events ./core/dbt/events/core_types.proto
+
+.PHONY: adapter_proto_types
+adapter_proto_types:  ## generates google protobuf python file from core_types.proto
+	protoc -I=./core/dbt/adapters/events --python_out=./core/dbt/adapters/events ./core/dbt/adapters/events/adapter_types.proto
+
+
 .PHONY: mypy
 mypy: .env ## Runs mypy against staged changes for static type checking.
 	@\

core/dbt/adapters/base/connections.py

@@ -40,7 +40,7 @@
 )
 from dbt.common.events import AdapterLogger
 from dbt.common.events.functions import fire_event
-from dbt.common.events.types import (
+from dbt.adapters.events.types import (
     NewConnection,
     ConnectionReused,
     ConnectionLeftOpenInCleanup,

core/dbt/adapters/base/impl.py

@@ -60,7 +60,7 @@
 from dbt.contracts.graph.manifest import Manifest, MacroManifest
 from dbt.contracts.graph.nodes import ResultNode
 from dbt.common.events.functions import fire_event, warn_or_error
-from dbt.common.events.types import (
+from dbt.adapters.events.types import (
     CacheMiss,
     ListRelations,
     CodeExecution,
@@ -82,7 +82,8 @@
 from dbt.adapters.base import Column as BaseColumn
 from dbt.adapters.base import Credentials
 from dbt.adapters.cache import RelationsCache, _make_ref_key_dict
-from dbt import deprecations
+from dbt.adapters.events.types import CollectFreshnessReturnSignature
+
 
 GET_CATALOG_MACRO_NAME = "get_catalog"
 GET_CATALOG_RELATIONS_MACRO_NAME = "get_catalog_relations"
@@ -1263,7 +1264,7 @@ def calculate_freshness(
         ]
         result = self.execute_macro(FRESHNESS_MACRO_NAME, kwargs=kwargs, manifest=manifest)
         if isinstance(result, agate.Table):
-            deprecations.warn("collect-freshness-return-signature")
+            warn_or_error(CollectFreshnessReturnSignature())
             adapter_response = None
             table = result
         else:

core/dbt/adapters/base/meta.py

@@ -1,9 +1,8 @@
 import abc
 from functools import wraps
 from typing import Callable, Optional, Any, FrozenSet, Dict, Set
-
-from dbt.deprecations import warn, renamed_method
-
+from dbt.common.events.functions import warn_or_error
+from dbt.adapters.events.types import AdapterDeprecationWarning
 
 Decorator = Callable[[Any], Callable]
 
@@ -62,11 +61,12 @@
 
         def wrapper(func):
             func_name = func.__name__
-            renamed_method(func_name, supported_name)
 
             @wraps(func)
             def inner(*args, **kwargs):
-                warn("adapter:{}".format(func_name))
+                warn_or_error(
+                    AdapterDeprecationWarning(old_name=func_name, new_name=supported_name)
+                )
                 return func(*args, **kwargs)
 
             if parse_replacement:

core/dbt/adapters/cache.py

@@ -15,7 +15,7 @@
     NoneRelationFoundError,
 )
 from dbt.common.events.functions import fire_event, fire_event_if
-from dbt.common.events.types import CacheAction, CacheDumpGraph
+from dbt.adapters.events.types import CacheAction, CacheDumpGraph
 from dbt.utils import lowercase
 
 

core/dbt/adapters/contracts/connection.py

@@ -26,9 +26,8 @@
 from dbt.common.contracts.util import Replaceable
 from dbt.common.utils import md5
 
-# TODO: dbt.common.events dependency
 from dbt.common.events.functions import fire_event
-from dbt.common.events.types import NewConnectionOpening
+from dbt.adapters.events.types import NewConnectionOpening
 
 # TODO: this is a very bad dependency - shared global state
 from dbt.common.events.contextvars import get_node_info

core/dbt/adapters/events/README.md

@@ -0,0 +1,54 @@
+# Events Module
+The Events module is responsible for communicating internal dbt structures into a consumable interface. Because the "event" classes are based entirely on protobuf definitions, the interface is really clearly defined, whether or not protobufs are used to consume it. We use Betterproto for compiling the protobuf message definitions into Python classes.
+
+# Using the Events Module
+The event module provides types that represent what is happening in dbt in `events.types`. These types are intended to represent an exhaustive list of all things happening within dbt that will need to be logged, streamed, or printed. To fire an event, `common.events.functions::fire_event` is the entry point to the module from everywhere in dbt.
+
+# Logging
+When events are processed via `fire_event`, nearly everything is logged. Whether or not the user has enabled the debug flag, all debug messages are still logged to the file. However, some events are particularly time consuming to construct because they return a huge amount of data. Today, the only messages in this category are cache events and are only logged if the `--log-cache-events` flag is on. This is important because these messages should not be created unless they are going to be logged, because they cause a noticable performance degredation. These events use a "fire_event_if" functions.
+
+# Adding a New Event
+* Add a new message in types.proto, and a second message with the same name + "Msg". The "Msg" message should have two fields, an "info" field of EventInfo, and a "data" field referring to the message name without "Msg"
+* run the protoc compiler to update adapter_types_pb2.py:   make adapter_proto_types
+* Add a wrapping class in core/dbt/adapters/event/types.py with a Level superclass  plus code and message methods
+
+We have switched from using betterproto to using google protobuf, because of a lack of support for Struct fields in betterproto.
+
+The google protobuf interface is janky and very much non-Pythonic. The "generated" classes in types_pb2.py do not resemble regular Python classes. They do not have normal constructors; they can only be constructed empty. They can be "filled" by setting fields individually or using a json_format method like ParseDict.  We have wrapped the logging events with a class (in types.py) which allows using a constructor -- keywords only, no positional parameters. 
+
+## Required for Every Event
+
+- a method `code`, that's unique across events
+- assign a log level by using the Level mixin: `DebugLevel`, `InfoLevel`, `WarnLevel`, or `ErrorLevel`
+- a message()
+
+Example
+```
+class PartialParsingDeletedExposure(DebugLevel):
+    def code(self):
+        return "I049"
+
+    def message(self) -> str:
+        return f"Partial parsing: deleted exposure {self.unique_id}"
+
+```
+
+
+# Adapter Maintainers
+To integrate existing log messages from adapters, you likely have a line of code like this in your adapter already:
+```python
+from dbt.logger import GLOBAL_LOGGER as logger
+```
+
+Simply change it to these two lines with your adapter's database name, and all your existing call sites will now use the new system for v1.0:
+```python
+from dbt.common.events import AdapterLogger
+logger = AdapterLogger("<database name>")
+# e.g. AdapterLogger("Snowflake")
+```
+
+## Compiling types.proto
+
+After adding a new message in `adapter_types.proto`, either:
+- In the repository root directory: `make adapter_proto_types`
+- In the `core/dbt/adapters/events` directory: `protoc -I=. --python_out=. types.proto`