feat: tool credentials cache and introduce _position.yaml (#2386)

api/core/helper/tool_provider_cache.py

@@ -0,0 +1,49 @@
+import json
+from enum import Enum
+from json import JSONDecodeError
+from typing import Optional
+
+from extensions.ext_redis import redis_client
+
+
+class ToolProviderCredentialsCacheType(Enum):
+    PROVIDER = "tool_provider"
+
+class ToolProviderCredentialsCache:
+    def __init__(self, tenant_id: str, identity_id: str, cache_type: ToolProviderCredentialsCacheType):
+        self.cache_key = f"{cache_type.value}_credentials:tenant_id:{tenant_id}:id:{identity_id}"
+
+    def get(self) -> Optional[dict]:
+        """
+        Get cached model provider credentials.
+
+        :return:
+        """
+        cached_provider_credentials = redis_client.get(self.cache_key)
+        if cached_provider_credentials:
+            try:
+                cached_provider_credentials = cached_provider_credentials.decode('utf-8')
+                cached_provider_credentials = json.loads(cached_provider_credentials)
+            except JSONDecodeError:
+                return None
+
+            return cached_provider_credentials
+        else:
+            return None
+
+    def set(self, credentials: dict) -> None:
+        """
+        Cache model provider credentials.
+
+        :param credentials: provider credentials
+        :return:
+        """
+        redis_client.setex(self.cache_key, 86400, json.dumps(credentials))
+
+    def delete(self) -> None:
+        """
+        Delete cached model provider credentials.
+
+        :return:
+        """
+        redis_client.delete(self.cache_key)