feat: add ops trace (#5483)

Co-authored-by: takatost <takatost@gmail.com>

api/core/ops/entities/config_entity.py

@@ -0,0 +1,51 @@
+from enum import Enum
+
+from pydantic import BaseModel, ValidationInfo, field_validator
+
+
+class TracingProviderEnum(Enum):
+    LANGFUSE = 'langfuse'
+    LANGSMITH = 'langsmith'
+
+
+class BaseTracingConfig(BaseModel):
+    """
+    Base model class for tracing
+    """
+    ...
+
+
+class LangfuseConfig(BaseTracingConfig):
+    """
+    Model class for Langfuse tracing config.
+    """
+    public_key: str
+    secret_key: str
+    host: str = 'https://api.langfuse.com'
+
+    @field_validator("host")
+    def set_value(cls, v, info: ValidationInfo):
+        if v is None or v == "":
+            v = 'https://api.langfuse.com'
+        if not v.startswith('https://'):
+            raise ValueError('host must start with https://')
+
+        return v
+
+
+class LangSmithConfig(BaseTracingConfig):
+    """
+    Model class for Langsmith tracing config.
+    """
+    api_key: str
+    project: str
+    endpoint: str = 'https://api.smith.langchain.com'
+
+    @field_validator("endpoint")
+    def set_value(cls, v, info: ValidationInfo):
+        if v is None or v == "":
+            v = 'https://api.smith.langchain.com'
+        if not v.startswith('https://'):
+            raise ValueError('endpoint must start with https://')
+
+        return v