refactored: to utilise the google adk and production grade agent

app/adk/tools.py

@@ -0,0 +1,64 @@
+"""ADK FunctionTool Wrappers for GCP Solution Architecture Agent.
+
+Uses google.adk.tools.FunctionTool primitives.
+"""
+
+from typing import Any, Dict
+from app.adk.compat import FunctionTool
+from app.tools.mcp_developer_knowledge import (
+    developerknowledge_answer_query as _mcp_answer,
+    developerknowledge_get_documents as _mcp_get,
+    developerknowledge_search_documents as _mcp_search,
+)
+from app.tools.validation_tools import (
+    validate_mermaid_diagram as _validate_mermaid,
+    validate_repository_artifacts as _validate_repo,
+    validate_terraform_syntax as _validate_terraform,
+)
+
+# Convert validation functions to ADK FunctionTools
+mermaid_tool = FunctionTool.from_defaults(
+    fn=_validate_mermaid.func if hasattr(_validate_mermaid, "func") else _validate_mermaid,
+    name="validate_mermaid_diagram",
+    description="Validates syntax and graph directives of a Mermaid diagram.",
+)
+
+terraform_tool = FunctionTool.from_defaults(
+    fn=_validate_terraform.func if hasattr(_validate_terraform, "func") else _validate_terraform,
+    name="validate_terraform_syntax",
+    description="Validates Terraform HCL basic structure and required Google Cloud resources.",
+)
+
+repo_artifacts_tool = FunctionTool.from_defaults(
+    fn=_validate_repo.func if hasattr(_validate_repo, "func") else _validate_repo,
+    name="validate_repository_artifacts",
+    description="Validates offline file existence and required section headings across repository artifacts.",
+)
+
+# Convert Developer Knowledge MCP tools to ADK FunctionTools
+mcp_search_tool = FunctionTool.from_defaults(
+    fn=_mcp_search.func if hasattr(_mcp_search, "func") else _mcp_search,
+    name="developerknowledge_search_documents",
+    description="Searches Google Cloud reference architecture, decision-making, and best-practice documents.",
+)
+
+mcp_get_tool = FunctionTool.from_defaults(
+    fn=_mcp_get.func if hasattr(_mcp_get, "func") else _mcp_get,
+    name="developerknowledge_get_documents",
+    description="Retrieves official Google Cloud document content and citations by URI.",
+)
+
+mcp_answer_tool = FunctionTool.from_defaults(
+    fn=_mcp_answer.func if hasattr(_mcp_answer, "func") else _mcp_answer,
+    name="developerknowledge_answer_query",
+    description="Answers architectural questions and checks GCP product release statuses and best practices.",
+)
+
+ADK_TOOLS = [
+    mermaid_tool,
+    terraform_tool,
+    repo_artifacts_tool,
+    mcp_search_tool,
+    mcp_get_tool,
+    mcp_answer_tool,
+]