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Add mcp-client module: ChatClient calling tools from real external MCP servers over stdio

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defaultToolCallbacks(ToolCallbackProvider) wires two real stdio MCP servers (the official
filesystem server and git server) into ChatClient, contrasted with defaultTools(Object) for a
local @Tool method. Every call -- MCP-sourced or local -- is logged through one Micrometer
ObservationHandler<ToolCallingObservationContext>; a first version wired that handler two ways
at once and every call logged twice, which is now a regression test. No real LLM is used
anywhere: every test builds an AssistantMessage.ToolCall by hand and drives it through the real
ToolCallingManager bean against real npx/uvx-launched MCP server processes.

Co-Authored-By: Claude Sonnet 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01FtpJvZfg4nvLvtzgJTDWpB
This commit is contained in:
Claude
2026-09-23 14:44:10 +00:00
parent 9919da58a7
commit 60849f4319
25 changed files with 969 additions and 0 deletions
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mcp-client/scripts/run-all.sh
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#!/usr/bin/env bash
# Regenerates every reproducible file under output/. Run from the module root
# (spring-ai/mcp-client). Needs npx and uvx on PATH -- both external MCP servers are launched
# fresh by the tests themselves.
set -eu
cd "$(dirname "$0")/.."
mvn -q -o test
echo
echo "Regenerated output/01 through 07 -- real MCP tool calls captured by the real"
echo "ToolCallingManager bean against real filesystem and git MCP servers, plus the local tool."