From 00337c6af80bf7ad36459f517b18a924adb4a2fb Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Florian=20L=C3=BCke?= <f.lueke@mesytec.com>
Date: Fri, 27 Dec 2024 14:39:48 +0100
Subject: [PATCH] mana root histograms: output file name based on daq run name

---
 src/mana_plugin_root_histogram.cc | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/mana_plugin_root_histogram.cc b/src/mana_plugin_root_histogram.cc
index 7669cdb..f0c8e08 100644
--- a/src/mana_plugin_root_histogram.cc
+++ b/src/mana_plugin_root_histogram.cc
@@ -1,5 +1,6 @@
 #include <TFile.h>
 #include <TH1.h>
+#include <filesystem>
 #include <regex>
 #include <spdlog/spdlog.h>
 #include <vector>
@@ -165,13 +166,16 @@ MANA_DEFINE_PLUGIN_BEGIN_RUN(begin_run)
 {
     log_debug("begin_run: context=%p, descriptor_json=%s", context, descriptor_json);
     auto jRun = nlohmann::json::parse(descriptor_json);
+    std::filesystem::path rp(jRun["name"].get<std::string>());
+    auto filename = fmt::format("{}_histograms.root", rp.filename().replace_extension().string());
     auto ctx = reinterpret_cast<Context *>(context);
     ctx->hitCounts.clear();
-    ctx->outputFile = std::make_unique<TFile>("output.root", "RECREATE");
+    ctx->outputFile = std::make_unique<TFile>(filename.c_str(), "RECREATE");
     ctx->hitCounts = make_hitcount_histos(ctx->outputFile.get(), jRun);
     ctx->rawHistograms = make_raw_histos(ctx->outputFile.get(), jRun);
     log_info("hitCount histograms: %s", histo_info(ctx->hitCounts).c_str());
     log_info("raw histograms: %s", histo_info(ctx->rawHistograms).c_str());
+    log_info("writing histograms into: %s", filename.c_str());
 }
 
 MANA_DEFINE_PLUGIN_END_RUN(end_run)