(fix) Langfuse key based logging (#6372)

* langfuse use helper for get_langfuse_logging_config

* fix get_langfuse_logger_for_request

* fix import

* fix get_langfuse_logger_for_request

* test_get_langfuse_logger_for_request_with_dynamic_params

* unit testing for test_get_langfuse_logger_for_request_with_no_dynamic_params

* parameterized langfuse testing

* fix langfuse test

* fix langfuse logging

* fix test_aaalangfuse_logging_metadata

* fix langfuse log metadata test

* fix langfuse logger

* use create_langfuse_logger_from_credentials

* fix test_get_langfuse_logger_for_request_with_no_dynamic_params

* fix correct langfuse/ folder structure

* use static methods for langfuse logger

* add commment on langfuse handler

* fix linting error

* add unit testing for langfuse logging

* fix linting

* fix failure handler langfuse

litellm/integrations/langfuse/langfuse.py

@@ -4,7 +4,7 @@ import copy
 import inspect
 import os
 import traceback
-from typing import Any, Dict, Optional
+from typing import TYPE_CHECKING, Any, Dict, Optional
 
 from packaging.version import Version
 from pydantic import BaseModel
@@ -16,6 +16,11 @@ from litellm.secret_managers.main import str_to_bool
 from litellm.types.integrations.langfuse import *
 from litellm.types.utils import StandardCallbackDynamicParams, StandardLoggingPayload
 
+if TYPE_CHECKING:
+    from litellm.litellm_core_utils.litellm_logging import DynamicLoggingCache
+else:
+    DynamicLoggingCache = Any
+
 
 class LangFuseLogger:
     # Class variables or attributes
@@ -798,53 +803,3 @@ def log_requester_metadata(clean_metadata: dict):
     returned_metadata.update({"requester_metadata": requester_metadata})
 
     return returned_metadata
-
-
-def get_langfuse_logging_config(
-    standard_callback_dynamic_params: StandardCallbackDynamicParams,
-    globalLangfuseLogger: Optional[LangFuseLogger] = None,
-) -> LangfuseLoggingConfig:
-    """
-    This function is used to get the Langfuse logging config for the Langfuse Logger.
-    It checks if the dynamic parameters are provided in the standard_callback_dynamic_params and uses them to get the Langfuse logging config.
-
-    If no dynamic parameters are provided, it uses the default values.
-    """
-    # only use dynamic params if langfuse credentials are passed dynamically
-    if _dynamic_langfuse_credentials_are_passed(standard_callback_dynamic_params):
-        return LangfuseLoggingConfig(
-            langfuse_secret=standard_callback_dynamic_params.get("langfuse_secret")
-            or standard_callback_dynamic_params.get("langfuse_secret_key"),
-            langfuse_public_key=standard_callback_dynamic_params.get(
-                "langfuse_public_key"
-            ),
-            langfuse_host=standard_callback_dynamic_params.get("langfuse_host"),
-        )
-    elif globalLangfuseLogger is not None:
-        return LangfuseLoggingConfig(
-            langfuse_secret=globalLangfuseLogger.secret_key,
-            langfuse_public_key=globalLangfuseLogger.public_key,
-            langfuse_host=globalLangfuseLogger.langfuse_host,
-        )
-    raise ValueError(
-        "`langfuse` set as a callback but globalLangfuseLogger is not provided and dynamic params are not passed"
-    )
-
-
-def _dynamic_langfuse_credentials_are_passed(
-    standard_callback_dynamic_params: StandardCallbackDynamicParams,
-) -> bool:
-    """
-    This function is used to check if the dynamic langfuse credentials are passed in standard_callback_dynamic_params
-
-    Returns:
-        bool: True if the dynamic langfuse credentials are passed, False otherwise
-    """
-    if (
-        standard_callback_dynamic_params.get("langfuse_host") is not None
-        or standard_callback_dynamic_params.get("langfuse_public_key") is not None
-        or standard_callback_dynamic_params.get("langfuse_secret") is not None
-        or standard_callback_dynamic_params.get("langfuse_secret_key") is not None
-    ):
-        return True
-    return False

litellm/integrations/langfuse/langfuse_handler.py

@@ -0,0 +1,168 @@
+"""
+This file contains the LangFuseHandler class
+
+Used to get the LangFuseLogger for a given request
+
+Handles Key/Team Based Langfuse Logging
+"""
+
+from typing import TYPE_CHECKING, Any, Dict, Optional
+
+from litellm.litellm_core_utils.litellm_logging import StandardCallbackDynamicParams
+
+from .langfuse import LangFuseLogger, LangfuseLoggingConfig
+
+if TYPE_CHECKING:
+    from litellm.litellm_core_utils.litellm_logging import DynamicLoggingCache
+else:
+    DynamicLoggingCache = Any
+
+
+class LangFuseHandler:
+
+    @staticmethod
+    def get_langfuse_logger_for_request(
+        standard_callback_dynamic_params: StandardCallbackDynamicParams,
+        in_memory_dynamic_logger_cache: DynamicLoggingCache,
+        globalLangfuseLogger: Optional[LangFuseLogger] = None,
+    ) -> LangFuseLogger:
+        """
+        This function is used to get the LangFuseLogger for a given request
+
+        1. If dynamic credentials are passed
+            - check if a LangFuseLogger is cached for the dynamic credentials
+            - if cached LangFuseLogger is not found, create a new LangFuseLogger and cache it
+
+        2. If dynamic credentials are not passed return the globalLangfuseLogger
+
+        """
+        temp_langfuse_logger: Optional[LangFuseLogger] = globalLangfuseLogger
+        if (
+            LangFuseHandler._dynamic_langfuse_credentials_are_passed(
+                standard_callback_dynamic_params
+            )
+            is False
+        ):
+            return LangFuseHandler._return_global_langfuse_logger(
+                globalLangfuseLogger=globalLangfuseLogger,
+                in_memory_dynamic_logger_cache=in_memory_dynamic_logger_cache,
+            )
+
+        # get langfuse logging config to use for this request, based on standard_callback_dynamic_params
+        _credentials = LangFuseHandler.get_dynamic_langfuse_logging_config(
+            globalLangfuseLogger=globalLangfuseLogger,
+            standard_callback_dynamic_params=standard_callback_dynamic_params,
+        )
+        credentials_dict = dict(_credentials)
+
+        # check if langfuse logger is already cached
+        temp_langfuse_logger = in_memory_dynamic_logger_cache.get_cache(
+            credentials=credentials_dict, service_name="langfuse"
+        )
+
+        # if not cached, create a new langfuse logger and cache it
+        if temp_langfuse_logger is None:
+            temp_langfuse_logger = (
+                LangFuseHandler._create_langfuse_logger_from_credentials(
+                    credentials=credentials_dict,
+                    in_memory_dynamic_logger_cache=in_memory_dynamic_logger_cache,
+                )
+            )
+
+        return temp_langfuse_logger
+
+    @staticmethod
+    def _return_global_langfuse_logger(
+        globalLangfuseLogger: Optional[LangFuseLogger],
+        in_memory_dynamic_logger_cache: DynamicLoggingCache,
+    ) -> LangFuseLogger:
+        """
+        Returns the Global LangfuseLogger set on litellm
+
+        (this is the default langfuse logger - used when no dynamic credentials are passed)
+
+        If no Global LangfuseLogger is set, it will check in_memory_dynamic_logger_cache for a cached LangFuseLogger
+        This function is used to return the globalLangfuseLogger if it exists, otherwise it will check in_memory_dynamic_logger_cache for a cached LangFuseLogger
+        """
+        if globalLangfuseLogger is not None:
+            return globalLangfuseLogger
+
+        credentials_dict: Dict[str, Any] = (
+            {}
+        )  # the global langfuse logger uses Environment Variables, there are no dynamic credentials
+        globalLangfuseLogger = in_memory_dynamic_logger_cache.get_cache(
+            credentials=credentials_dict,
+            service_name="langfuse",
+        )
+        if globalLangfuseLogger is None:
+            globalLangfuseLogger = (
+                LangFuseHandler._create_langfuse_logger_from_credentials(
+                    credentials=credentials_dict,
+                    in_memory_dynamic_logger_cache=in_memory_dynamic_logger_cache,
+                )
+            )
+        return globalLangfuseLogger
+
+    @staticmethod
+    def _create_langfuse_logger_from_credentials(
+        credentials: Dict,
+        in_memory_dynamic_logger_cache: DynamicLoggingCache,
+    ) -> LangFuseLogger:
+        """
+        This function is used to
+        1. create a LangFuseLogger from the credentials
+        2. cache the LangFuseLogger to prevent re-creating it for the same credentials
+        """
+
+        langfuse_logger = LangFuseLogger(
+            langfuse_public_key=credentials.get("langfuse_public_key"),
+            langfuse_secret=credentials.get("langfuse_secret"),
+            langfuse_host=credentials.get("langfuse_host"),
+        )
+        in_memory_dynamic_logger_cache.set_cache(
+            credentials=credentials,
+            service_name="langfuse",
+            logging_obj=langfuse_logger,
+        )
+        return langfuse_logger
+
+    @staticmethod
+    def get_dynamic_langfuse_logging_config(
+        standard_callback_dynamic_params: StandardCallbackDynamicParams,
+        globalLangfuseLogger: Optional[LangFuseLogger] = None,
+    ) -> LangfuseLoggingConfig:
+        """
+        This function is used to get the Langfuse logging config to use for a given request.
+
+        It checks if the dynamic parameters are provided in the standard_callback_dynamic_params and uses them to get the Langfuse logging config.
+
+        If no dynamic parameters are provided, it uses the `globalLangfuseLogger` values
+        """
+        # only use dynamic params if langfuse credentials are passed dynamically
+        return LangfuseLoggingConfig(
+            langfuse_secret=standard_callback_dynamic_params.get("langfuse_secret")
+            or standard_callback_dynamic_params.get("langfuse_secret_key"),
+            langfuse_public_key=standard_callback_dynamic_params.get(
+                "langfuse_public_key"
+            ),
+            langfuse_host=standard_callback_dynamic_params.get("langfuse_host"),
+        )
+
+    @staticmethod
+    def _dynamic_langfuse_credentials_are_passed(
+        standard_callback_dynamic_params: StandardCallbackDynamicParams,
+    ) -> bool:
+        """
+        This function is used to check if the dynamic langfuse credentials are passed in standard_callback_dynamic_params
+
+        Returns:
+            bool: True if the dynamic langfuse credentials are passed, False otherwise
+        """
+        if (
+            standard_callback_dynamic_params.get("langfuse_host") is not None
+            or standard_callback_dynamic_params.get("langfuse_public_key") is not None
+            or standard_callback_dynamic_params.get("langfuse_secret") is not None
+            or standard_callback_dynamic_params.get("langfuse_secret_key") is not None
+        ):
+            return True
+        return False

litellm/litellm_core_utils/litellm_logging.py

@@ -70,7 +70,8 @@ from ..integrations.gcs_bucket.gcs_bucket import GCSBucketLogger
 from ..integrations.greenscale import GreenscaleLogger
 from ..integrations.helicone import HeliconeLogger
 from ..integrations.lago import LagoLogger
-from ..integrations.langfuse import LangFuseLogger
+from ..integrations.langfuse.langfuse import LangFuseLogger
+from ..integrations.langfuse.langfuse_handler import LangFuseHandler
 from ..integrations.langsmith import LangsmithLogger
 from ..integrations.litedebugger import LiteDebugger
 from ..integrations.literal_ai import LiteralAILogger
@@ -1116,74 +1117,13 @@ class Logging:
                                 print_verbose("reaches langfuse for streaming logging!")
                                 result = kwargs["complete_streaming_response"]
 
-                        temp_langfuse_logger = langFuseLogger
-                        if langFuseLogger is None or (
-                            (
-                                self.standard_callback_dynamic_params.get(
-                                    "langfuse_public_key"
-                                )
-                                is not None
-                                and self.standard_callback_dynamic_params.get(
-                                    "langfuse_public_key"
-                                )
-                                != langFuseLogger.public_key
-                            )
-                            or (
-                                self.standard_callback_dynamic_params.get(
-                                    "langfuse_secret"
-                                )
-                                is not None
-                                and self.standard_callback_dynamic_params.get(
-                                    "langfuse_secret"
-                                )
-                                != langFuseLogger.secret_key
-                            )
-                            or (
-                                self.standard_callback_dynamic_params.get(
-                                    "langfuse_host"
-                                )
-                                is not None
-                                and self.standard_callback_dynamic_params.get(
-                                    "langfuse_host"
-                                )
-                                != langFuseLogger.langfuse_host
-                            )
-                        ):
-                            credentials = {
-                                "langfuse_public_key": self.standard_callback_dynamic_params.get(
-                                    "langfuse_public_key"
-                                ),
-                                "langfuse_secret": self.standard_callback_dynamic_params.get(
-                                    "langfuse_secret"
-                                ),
-                                "langfuse_host": self.standard_callback_dynamic_params.get(
-                                    "langfuse_host"
-                                ),
-                            }
-                            temp_langfuse_logger = (
-                                in_memory_dynamic_logger_cache.get_cache(
-                                    credentials=credentials, service_name="langfuse"
-                                )
-                            )
-                            if temp_langfuse_logger is None:
-                                temp_langfuse_logger = LangFuseLogger(
-                                    langfuse_public_key=self.standard_callback_dynamic_params.get(
-                                        "langfuse_public_key"
-                                    ),
-                                    langfuse_secret=self.standard_callback_dynamic_params.get(
-                                        "langfuse_secret"
-                                    ),
-                                    langfuse_host=self.standard_callback_dynamic_params.get(
-                                        "langfuse_host"
-                                    ),
-                                )
-                                in_memory_dynamic_logger_cache.set_cache(
-                                    credentials=credentials,
-                                    service_name="langfuse",
-                                    logging_obj=temp_langfuse_logger,
-                                )
-                        if temp_langfuse_logger is not None:
-                            _response = temp_langfuse_logger.log_event(
+                        langfuse_logger_to_use = LangFuseHandler.get_langfuse_logger_for_request(
+                            globalLangfuseLogger=langFuseLogger,
+                            standard_callback_dynamic_params=self.standard_callback_dynamic_params,
+                            in_memory_dynamic_logger_cache=in_memory_dynamic_logger_cache,
+                        )
+                        if langfuse_logger_to_use is not None:
+                            _response = langfuse_logger_to_use.log_event(
                                 kwargs=kwargs,
                                 response_obj=result,
                                 start_time=start_time,
@@ -1909,50 +1849,12 @@ class Logging:
                             ):  # copy.deepcopy raises errors as this could be a coroutine
                                 kwargs[k] = v
                         # this only logs streaming once, complete_streaming_response exists i.e when stream ends
-                        if langFuseLogger is None or (
-                            (
-                                self.standard_callback_dynamic_params.get(
-                                    "langfuse_public_key"
-                                )
-                                is not None
-                                and self.standard_callback_dynamic_params.get(
-                                    "langfuse_public_key"
-                                )
-                                != langFuseLogger.public_key
-                            )
-                            or (
-                                self.standard_callback_dynamic_params.get(
-                                    "langfuse_public_key"
-                                )
-                                is not None
-                                and self.standard_callback_dynamic_params.get(
-                                    "langfuse_public_key"
-                                )
-                                != langFuseLogger.public_key
-                            )
-                            or (
-                                self.standard_callback_dynamic_params.get(
-                                    "langfuse_host"
-                                )
-                                is not None
-                                and self.standard_callback_dynamic_params.get(
-                                    "langfuse_host"
-                                )
-                                != langFuseLogger.langfuse_host
-                            )
-                        ):
-                            langFuseLogger = LangFuseLogger(
-                                langfuse_public_key=self.standard_callback_dynamic_params.get(
-                                    "langfuse_public_key"
-                                ),
-                                langfuse_secret=self.standard_callback_dynamic_params.get(
-                                    "langfuse_secret"
-                                ),
-                                langfuse_host=self.standard_callback_dynamic_params.get(
-                                    "langfuse_host"
-                                ),
-                            )
-                        _response = langFuseLogger.log_event(
+                        langfuse_logger_to_use = LangFuseHandler.get_langfuse_logger_for_request(
+                            globalLangfuseLogger=langFuseLogger,
+                            standard_callback_dynamic_params=self.standard_callback_dynamic_params,
+                            in_memory_dynamic_logger_cache=in_memory_dynamic_logger_cache,
+                        )
+                        _response = langfuse_logger_to_use.log_event(
                             start_time=start_time,
                             end_time=end_time,
                             response_obj=None,

litellm/proxy/health_endpoints/_health_endpoints.py

@@ -120,7 +120,7 @@ async def health_services_endpoint(  # noqa: PLR0915
             }
 
         if service == "langfuse":
-            from litellm.integrations.langfuse import LangFuseLogger
+            from litellm.integrations.langfuse.langfuse import LangFuseLogger
 
             langfuse_logger = LangFuseLogger()
             langfuse_logger.Langfuse.auth_check()

litellm/proxy/proxy_config.yaml

@@ -1,48 +1,20 @@
 model_list:
-  ################################################################################
-  # Azure
-  - model_name: gpt-4o-mini
-    litellm_params:
-      model: azure/gpt-4o-mini
-      api_base: https://amazin-prod.openai.azure.com
-      api_key: "os.environ/AZURE_GPT_4O"
-      deployment_id: gpt-4o-mini
   - model_name: gpt-4o
     litellm_params:
-      model: azure/gpt-4o
-      api_base: https://very-cool-prod.openai.azure.com
-      api_key: "os.environ/AZURE_GPT_4O"
-      deployment_id: gpt-4o
+      model: gpt-4o
+      api_key: os.environ/OPENAI_API_KEY
+      tpm: 1000000
+      rpm: 10000
 
-  ################################################################################
-  # Fireworks
-  - model_name: fireworks-llama-v3p1-405b-instruct
-    litellm_params:
-      model: fireworks_ai/accounts/fireworks/models/llama-v3p1-405b-instruct
-      api_key: "os.environ/FIREWORKS"
-  - model_name: fireworks-llama-v3p1-70b-instruct
-    litellm_params:
-      model: fireworks_ai/accounts/fireworks/models/llama-v3p1-70b-instruct
-      api_key: "os.environ/FIREWORKS"
 
 general_settings:
-  alerting_threshold: 300 # sends alerts if requests hang for 5min+ and responses take 5min+
-litellm_settings: # module level litellm settings - https://github.com/BerriAI/litellm/blob/main/litellm/__init__.py
-  success_callback: ["prometheus"]
-  service_callback: ["prometheus_system"]
-  drop_params: False # Raise an exception if the openai param being passed in isn't supported.
-  cache: false
-  default_internal_user_params:
-    user_role: os.environ/DEFAULT_USER_ROLE
+  # master key is set via env var
+  # master_key: #######
+  proxy_batch_write_at: 60 # Batch write spend updates every 60s
 
-  success_callback: ["s3"]
-  s3_callback_params:
-    s3_bucket_name: logs-bucket-litellm   # AWS Bucket Name for S3
-    s3_region_name: us-west-2              # AWS Region Name for S3
-    s3_aws_access_key_id: os.environ/AWS_ACCESS_KEY_ID  # us os.environ/<variable name> to pass environment variables. This is AWS Access Key ID for S3
-    s3_aws_secret_access_key: os.environ/AWS_SECRET_ACCESS_KEY  # AWS Secret Access Key for S3
-    s3_path: my-test-path # [OPTIONAL] set path in bucket you want to write logs to
-    s3_endpoint_url: https://s3.amazonaws.com  # [OPTIONAL] S3 endpoint URL, if you want to use Backblaze/cloudflare s3 buckets
+litellm_settings:
+  success_callback: ["langfuse"]
 
-router_settings:
-  routing_strategy: simple-shuffle # "simple-shuffle" shown to result in highest throughput. https://docs.litellm.ai/docs/proxy/configs#load-balancing
+  # https://docs.litellm.ai/docs/proxy/reliability#default-fallbacks
+  default_fallbacks: ["gpt-4o-2024-08-06", "claude-3-5-sonnet-20240620"]
+  fallbacks: [{"gpt-4o-2024-08-06": ["claude-3-5-sonnet-20240620"]}, {"gpt-4o-2024-05-13": ["claude-3-5-sonnet-20240620"]}]

tests/local_testing/test_alangfuse.py

@@ -428,7 +428,7 @@ async def test_aaalangfuse_logging_metadata(langfuse_client):
 
             await asyncio.sleep(2)
     langfuse_client.flush()
-    # await asyncio.sleep(10)
+    await asyncio.sleep(4)
 
     # Tests the metadata filtering and the override of the output to be the last generation
     for trace_id, generation_ids in trace_identifiers.items():
@@ -625,7 +625,7 @@ def test_aaalangfuse_existing_trace_id():
     import datetime
 
     import litellm
-    from litellm.integrations.langfuse import LangFuseLogger
+    from litellm.integrations.langfuse.langfuse import LangFuseLogger
 
     langfuse_Logger = LangFuseLogger(
         langfuse_public_key=os.getenv("LANGFUSE_PROJECT2_PUBLIC"),
@@ -1125,7 +1125,7 @@ generation_params = {
 )
 def test_langfuse_prompt_type(prompt):
 
-    from litellm.integrations.langfuse import _add_prompt_to_generation_params
+    from litellm.integrations.langfuse.langfuse import _add_prompt_to_generation_params
 
     clean_metadata = {
         "prompt": {
@@ -1232,7 +1232,7 @@ def test_langfuse_prompt_type(prompt):
 
 
 def test_langfuse_logging_metadata():
-    from litellm.integrations.langfuse import log_requester_metadata
+    from litellm.integrations.langfuse.langfuse import log_requester_metadata
 
     metadata = {"key": "value", "requester_metadata": {"key": "value"}}
 

tests/logging_callback_tests/test_langfuse_unit_tests.py

@@ -0,0 +1,219 @@
+import json
+import os
+import sys
+from datetime import datetime
+
+from pydantic.main import Model
+
+sys.path.insert(
+    0, os.path.abspath("../..")
+)  # Adds the parent directory to the system-path
+
+import pytest
+import litellm
+import asyncio
+import logging
+from litellm._logging import verbose_logger
+from litellm.integrations.langfuse.langfuse import (
+    LangFuseLogger,
+)
+from litellm.integrations.langfuse.langfuse_handler import LangFuseHandler
+from litellm.types.utils import StandardCallbackDynamicParams
+from litellm.litellm_core_utils.litellm_logging import DynamicLoggingCache
+from unittest.mock import Mock, patch
+
+
+@pytest.fixture
+def dynamic_logging_cache():
+    return DynamicLoggingCache()
+
+
+global_langfuse_logger = LangFuseLogger(
+    langfuse_public_key="global_public_key",
+    langfuse_secret="global_secret",
+    langfuse_host="https://global.langfuse.com",
+)
+
+
+# IMPORTANT: Test that passing both langfuse_secret_key and langfuse_secret works
+standard_params_1 = StandardCallbackDynamicParams(
+    langfuse_public_key="test_public_key",
+    langfuse_secret="test_secret",
+    langfuse_host="https://test.langfuse.com",
+)
+
+standard_params_2 = StandardCallbackDynamicParams(
+    langfuse_public_key="test_public_key",
+    langfuse_secret_key="test_secret",
+    langfuse_host="https://test.langfuse.com",
+)
+
+
+@pytest.mark.parametrize("globalLangfuseLogger", [None, global_langfuse_logger])
+@pytest.mark.parametrize("standard_params", [standard_params_1, standard_params_2])
+def test_get_langfuse_logger_for_request_with_dynamic_params(
+    dynamic_logging_cache, globalLangfuseLogger, standard_params
+):
+    """
+    If StandardCallbackDynamicParams contain langfuse credentials the returned Langfuse logger should use the dynamic params
+
+    the new Langfuse logger should be cached
+
+    Even if globalLangfuseLogger is provided, it should use dynamic params if they are passed
+    """
+
+    result = LangFuseHandler.get_langfuse_logger_for_request(
+        standard_callback_dynamic_params=standard_params,
+        in_memory_dynamic_logger_cache=dynamic_logging_cache,
+        globalLangfuseLogger=globalLangfuseLogger,
+    )
+
+    assert isinstance(result, LangFuseLogger)
+    assert result.public_key == "test_public_key"
+    assert result.secret_key == "test_secret"
+    assert result.langfuse_host == "https://test.langfuse.com"
+
+    print("langfuse logger=", result)
+    print("vars in langfuse logger=", vars(result))
+
+    # Check if the logger is cached
+    cached_logger = dynamic_logging_cache.get_cache(
+        credentials={
+            "langfuse_public_key": "test_public_key",
+            "langfuse_secret": "test_secret",
+            "langfuse_host": "https://test.langfuse.com",
+        },
+        service_name="langfuse",
+    )
+    assert cached_logger is result
+
+
+@pytest.mark.parametrize("globalLangfuseLogger", [None, global_langfuse_logger])
+def test_get_langfuse_logger_for_request_with_no_dynamic_params(
+    dynamic_logging_cache, globalLangfuseLogger
+):
+    """
+    If StandardCallbackDynamicParams are not provided, the globalLangfuseLogger should be returned
+    """
+    result = LangFuseHandler.get_langfuse_logger_for_request(
+        standard_callback_dynamic_params=StandardCallbackDynamicParams(),
+        in_memory_dynamic_logger_cache=dynamic_logging_cache,
+        globalLangfuseLogger=globalLangfuseLogger,
+    )
+
+    assert result is not None
+    assert isinstance(result, LangFuseLogger)
+
+    print("langfuse logger=", result)
+
+    if globalLangfuseLogger is not None:
+        assert result.public_key == "global_public_key"
+        assert result.secret_key == "global_secret"
+        assert result.langfuse_host == "https://global.langfuse.com"
+
+
+def test_dynamic_langfuse_credentials_are_passed():
+    # Test when credentials are passed
+    params_with_credentials = StandardCallbackDynamicParams(
+        langfuse_public_key="test_key",
+        langfuse_secret="test_secret",
+        langfuse_host="https://test.langfuse.com",
+    )
+    assert (
+        LangFuseHandler._dynamic_langfuse_credentials_are_passed(
+            params_with_credentials
+        )
+        is True
+    )
+
+    # Test when no credentials are passed
+    params_without_credentials = StandardCallbackDynamicParams()
+    assert (
+        LangFuseHandler._dynamic_langfuse_credentials_are_passed(
+            params_without_credentials
+        )
+        is False
+    )
+
+    # Test when only some credentials are passed
+    params_partial_credentials = StandardCallbackDynamicParams(
+        langfuse_public_key="test_key"
+    )
+    assert (
+        LangFuseHandler._dynamic_langfuse_credentials_are_passed(
+            params_partial_credentials
+        )
+        is True
+    )
+
+
+def test_get_dynamic_langfuse_logging_config():
+    # Test with dynamic params
+    dynamic_params = StandardCallbackDynamicParams(
+        langfuse_public_key="dynamic_key",
+        langfuse_secret="dynamic_secret",
+        langfuse_host="https://dynamic.langfuse.com",
+    )
+    config = LangFuseHandler.get_dynamic_langfuse_logging_config(dynamic_params)
+    assert config["langfuse_public_key"] == "dynamic_key"
+    assert config["langfuse_secret"] == "dynamic_secret"
+    assert config["langfuse_host"] == "https://dynamic.langfuse.com"
+
+    # Test with no dynamic params
+    empty_params = StandardCallbackDynamicParams()
+    config = LangFuseHandler.get_dynamic_langfuse_logging_config(empty_params)
+    assert config["langfuse_public_key"] is None
+    assert config["langfuse_secret"] is None
+    assert config["langfuse_host"] is None
+
+
+def test_return_global_langfuse_logger():
+    mock_cache = Mock()
+    global_logger = LangFuseLogger(
+        langfuse_public_key="global_key", langfuse_secret="global_secret"
+    )
+
+    # Test with existing global logger
+    result = LangFuseHandler._return_global_langfuse_logger(global_logger, mock_cache)
+    assert result == global_logger
+
+    # Test without global logger, but with cached logger, should return cached logger
+    mock_cache.get_cache.return_value = global_logger
+    result = LangFuseHandler._return_global_langfuse_logger(None, mock_cache)
+    assert result == global_logger
+
+    # Test without global logger and without cached logger, should create new logger
+    mock_cache.get_cache.return_value = None
+    with patch.object(
+        LangFuseHandler,
+        "_create_langfuse_logger_from_credentials",
+        return_value=global_logger,
+    ):
+        result = LangFuseHandler._return_global_langfuse_logger(None, mock_cache)
+        assert result == global_logger
+
+
+def test_get_langfuse_logger_for_request_with_cached_logger():
+    """
+    Test that get_langfuse_logger_for_request returns the cached logger if it exists when dynamic params are passed
+    """
+    mock_cache = Mock()
+    cached_logger = LangFuseLogger(
+        langfuse_public_key="cached_key", langfuse_secret="cached_secret"
+    )
+    mock_cache.get_cache.return_value = cached_logger
+
+    dynamic_params = StandardCallbackDynamicParams(
+        langfuse_public_key="test_key",
+        langfuse_secret="test_secret",
+        langfuse_host="https://test.langfuse.com",
+    )
+
+    result = LangFuseHandler.get_langfuse_logger_for_request(
+        standard_callback_dynamic_params=dynamic_params,
+        in_memory_dynamic_logger_cache=mock_cache,
+        globalLangfuseLogger=None,
+    )
+
+    assert result == cached_logger
+    mock_cache.get_cache.assert_called_once()