optionally specify available bedrock model used in validation

.vscode/launch.json

@@ -1,30 +0,0 @@
-{
-  // Use IntelliSense to learn about possible attributes.
-  // Hover to view descriptions of existing attributes.
-  // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
-  "version": "0.2.0",
-  "configurations": [
-    {
-      // set root directory to api/ folder
-      "cwd": "${workspaceFolder}/api",
-      "name": "Python: Flask",
-      "type": "python",
-      "request": "launch",
-      "module": "flask",
-      "env": {
-        "FLASK_APP": "app.py",
-        "FLASK_DEBUG": "1",
-        "GEVENT_SUPPORT": "True"
-      },
-      "args": [
-        "run",
-        "--no-debugger",
-        "--no-reload",
-        "--host=0.0.0.0",
-        "--port=5001"
-      ],
-      "jinja": true,
-      "justMyCode": true
-    }
-  ]
-}

api/core/model_runtime/model_providers/bedrock/bedrock.py

@@ -17,9 +17,11 @@ class BedrockProvider(ModelProvider):
         """
         try:
             model_instance = self.get_model_instance(ModelType.LLM)
-            bedrock_validate_model_name = credentials.get('model_for_validation', 'amazon.titan-text-lite-v1')
+
+            # Use `amazon.titan-text-lite-v1` model by default for validating credentials
+            model_for_validation = credentials.get('model_for_validation', 'amazon.titan-text-lite-v1')
             model_instance.validate_credentials(
-                model=bedrock_validate_model_name,
+                model=model_for_validation,
                 credentials=credentials
             )
         except CredentialsValidateFailedError as ex:

api/core/model_runtime/model_providers/bedrock/bedrock.yaml

@@ -74,7 +74,8 @@ provider_credential_schema:
       label:
         en_US: Available Model Name
         zh_Hans: 可用模型名称
-      type: text-input
+      type: secret-input
       placeholder:
         en_US: A model you have access to (e.g. amazon.titan-text-lite-v1) for validation.
         zh_Hans: 为了进行验证，请输入一个您可用的模型名称 (例如：amazon.titan-text-lite-v1)
+