[#132] Add steps logger and refactor reporter usage

Signed-off-by: Andrey Berezin <a.berezin@yadro.com>

src/frostfs_testlib/reporter/steps_logger.py

@@ -0,0 +1,56 @@
+import logging
+import threading
+from contextlib import AbstractContextManager, ContextDecorator
+from functools import wraps
+from types import TracebackType
+from typing import Any, Callable
+
+from frostfs_testlib.reporter.interfaces import ReporterHandler
+
+
+class StepsLogger(ReporterHandler):
+    """Handler that prints steps to log."""
+
+    def step(self, name: str) -> AbstractContextManager | ContextDecorator:
+        return StepLoggerContext(name)
+
+    def step_decorator(self, name: str) -> Callable:
+        return StepLoggerContext(name)
+
+    def attach(self, body: Any, file_name: str) -> None:
+        pass
+
+
+class StepLoggerContext(AbstractContextManager):
+    INDENT = {}
+
+    def __init__(self, title: str):
+        self.title = title
+        self.logger = logging.getLogger("NeoLogger")
+        self.thread = threading.get_ident()
+        if self.thread not in StepLoggerContext.INDENT:
+            StepLoggerContext.INDENT[self.thread] = 1
+
+    def __enter__(self) -> Any:
+        indent = ">" * StepLoggerContext.INDENT[self.thread]
+        self.logger.info(f"[{self.thread}] {indent} {self.title}")
+        StepLoggerContext.INDENT[self.thread] += 1
+
+    def __exit__(
+        self,
+        __exc_type: type[BaseException] | None,
+        __exc_value: BaseException | None,
+        __traceback: TracebackType | None,
+    ) -> bool | None:
+
+        StepLoggerContext.INDENT[self.thread] -= 1
+        indent = "<" * StepLoggerContext.INDENT[self.thread]
+        self.logger.info(f"[{self.thread}] {indent} {self.title}")
+
+    def __call__(self, func):
+        @wraps(func)
+        def impl(*a, **kw):
+            with self:
+                return func(*a, **kw)
+
+        return impl