DPL MCP: expose the version in the MCP

This allows your favourite LLM to spot missing recompilations.

Author: ktf

Framework/Core/scripts/dpl-mcp-server/dpl_mcp_server.py

@@ -190,9 +190,10 @@ async def connect(port: int = 0, pid: int = 0, name: str = "") -> str:
     _workflows[wf_name] = conn
 
     devices = conn.snapshot.get("devices", [])
+    version = conn.snapshot.get("version", "unknown")
     return (
         f"Connected to workflow '{wf_name}' on port {port} "
-        f"({len(devices)} device(s))."
+        f"({len(devices)} device(s), version: {version})."
     )
 
 
@@ -232,9 +233,10 @@ async def connect_hyperloop(url: str, name: str = "", token: str = "") -> str:
     _workflows[wf_name] = conn
 
     devices = conn.snapshot.get("devices", [])
+    version = conn.snapshot.get("version", "unknown")
     return (
         f"Connected to Hyperloop workflow '{wf_name}' via {ws_url} "
-        f"({len(devices)} device(s))."
+        f"({len(devices)} device(s), version: {version})."
     )
 
 

Framework/Core/src/StatusWebSocketHandler.cxx

@@ -23,6 +23,7 @@
 #include "Framework/DeviceStateEnums.h"
 #include "Framework/LogParsingHelpers.h"
 #include "Framework/Signpost.h"
+#include "O2Version.h"
 #include <algorithm>
 #include <cstdio>
 #include <string>
@@ -286,7 +287,9 @@ void StatusWebSocketHandler::sendSnapshot()
 
   std::string out;
   out.reserve(512 + specs.size() * 128);
-  out += R"({"type":"snapshot","devices":[)";
+  out += R"({"type":"snapshot","version":")";
+  out += jsonEscape(o2::gitRevision());
+  out += R"(","devices":[)";
   for (size_t di = 0; di < specs.size(); ++di) {
     if (di > 0) {
       out += ',';