Incremental improvement to application logging

src/poetry/console/application.py

@@ -212,6 +212,7 @@ def _configure_io(self, io: IO) -> None:
     def register_command_loggers(
         self, event: ConsoleCommandEvent, event_name: str, _: Any
     ) -> None:
+        from poetry.console.logging.filters import POETRY_FILTER
         from poetry.console.logging.io_formatter import IOFormatter
         from poetry.console.logging.io_handler import IOHandler
 
@@ -241,6 +242,10 @@ def register_command_loggers(
 
         logging.basicConfig(level=level, handlers=[handler])
 
+        # only log third-party packages when very verbose
+        if not io.is_very_verbose():
+            handler.addFilter(POETRY_FILTER)
+
         for name in loggers:
             logger = logging.getLogger(name)
 

src/poetry/console/logging/filters.py

@@ -0,0 +1,6 @@
+from __future__ import annotations
+
+import logging
+
+
+POETRY_FILTER = logging.Filter(name="poetry")

src/poetry/console/logging/io_formatter.py

@@ -4,6 +4,7 @@
 
 from typing import TYPE_CHECKING
 
+from poetry.console.logging.filters import POETRY_FILTER
 from poetry.console.logging.formatters import FORMATTERS
 
 
@@ -30,6 +31,10 @@ def format(self, record: LogRecord) -> str:
             elif level in self._colors:
                 msg = f"<{self._colors[level]}>{msg}</>"
 
-            return msg
+            record.msg = msg
+
+        if not POETRY_FILTER.filter(record):
+            # prefix third-party packages with name for easier debugging
+            record.msg = f"[{record.name}] {record.msg}"
 
         return super().format(record)

src/poetry/repositories/repository.py

@@ -114,9 +114,8 @@ def _get_constraints_from_dependency(
         return constraint, allow_prereleases
 
     def _log(self, msg: str, level: str = "info") -> None:
-        getattr(logging.getLogger(self.__class__.__name__), level)(
-            f"<debug>{self.name}:</debug> {msg}"
-        )
+        logger = logging.getLogger(f"{__name__}.{self.__class__.__name__}")
+        getattr(logger, level)(f"<debug>{self.name}:</debug> {msg}")
 
     def __len__(self) -> int:
         return len(self._packages)

tests/conftest.py

@@ -1,5 +1,6 @@
 from __future__ import annotations
 
+import logging
 import os
 import re
 import shutil
@@ -402,3 +403,14 @@ def _factory(
 @pytest.fixture
 def project_root() -> Path:
     return Path(__file__).parent.parent
+
+
+@pytest.fixture(autouse=True)
+def set_simple_log_formatter() -> None:
+    """
+    This fixture removes any formatting added via IOFormatter.
+    """
+    for name in logging.Logger.manager.loggerDict:
+        for handler in logging.getLogger(name).handlers:
+            # replace formatter with simple formatter for testing
+            handler.setFormatter(logging.Formatter(fmt="%(message)s"))