Add RPM control to both agents and crews (#133)

* moving file into utilities
* creating Logger and RPMController
* Adding support for RPM to agents and crew

src/crewai/utilities/rpm_controller.py

@@ -0,0 +1,57 @@
+import threading
+import time
+from typing import Union
+
+from pydantic import BaseModel, ConfigDict, Field, PrivateAttr, model_validator
+
+from crewai.utilities.logger import Logger
+
+
+class RPMController(BaseModel):
+    model_config = ConfigDict(arbitrary_types_allowed=True)
+    max_rpm: Union[int, None] = Field(default=None)
+    logger: Logger = Field(default=None)
+    _current_rpm: int = PrivateAttr(default=0)
+    _timer: threading.Timer = PrivateAttr(default=None)
+    _lock: threading.Lock = PrivateAttr(default=None)
+
+    @model_validator(mode="after")
+    def reset_counter(self):
+        if self.max_rpm:
+            self._lock = threading.Lock()
+            self._reset_request_count()
+        return self
+
+    def check_or_wait(self):
+        if not self.max_rpm:
+            return True
+
+        with self._lock:
+            if self._current_rpm < self.max_rpm:
+                self._current_rpm += 1
+                return True
+            else:
+                self.logger.log(
+                    "info", "Max RPM reached, waiting for next minute to start."
+                )
+                self._wait_for_next_minute()
+                self._current_rpm = 1
+                return True
+
+    def stop_rpm_counter(self):
+        if self._timer:
+            self._timer.cancel()
+            self._timer = None
+
+    def _wait_for_next_minute(self):
+        time.sleep(60)
+        with self._lock:
+            self._current_rpm = 0
+
+    def _reset_request_count(self):
+        with self._lock:
+            self._current_rpm = 0
+        if self._timer:
+            self._timer.cancel()
+        self._timer = threading.Timer(60.0, self._reset_request_count)
+        self._timer.start()