[ALICE3] fix for when using ini file for a3 detector setup from ccdb (#14886)

Author: jesgum

ALICE3/Core/FastTracker.cxx

@@ -24,9 +24,11 @@
 #include <TRandom.h>
 #include <TSystem.h>
 
+#include <chrono>
 #include <fstream>
 #include <map>
 #include <string>
+#include <thread>
 #include <vector>
 
 namespace o2
@@ -79,7 +81,30 @@ void GeometryContainer::init(o2::framework::InitContext& initContext)
     return;
   }
   LOG(info) << "Size of detector configuration: " << detectorConfiguration.size();
-  for (const auto& configFile : detectorConfiguration) {
+  for (std::string& configFile : detectorConfiguration) {
+    if (configFile.rfind("ccdb:", 0) == 0) {
+      LOG(info) << "ccdb source detected from on-the-fly-detector-geometry-provider";
+      const std::string ccdbPath = configFile.substr(5); // remove "ccdb:" prefix
+      const std::string outPath = "./.ALICE3/Configuration/";
+      configFile = Form("%s/%s/snapshot.root", outPath.c_str(), ccdbPath.c_str());
+
+      int timeout = 600; // Wait max 10 minutes
+      while (--timeout > 0) {
+        std::ifstream file(configFile);
+        if (file.good()) {
+          break;
+        }
+
+        std::this_thread::sleep_for(std::chrono::seconds(1));
+      }
+
+      std::ifstream checkFile(configFile);
+      if (!checkFile.good()) {
+        LOG(fatal) << "Timed out waiting for geometry snapshot: " << configFile;
+        return;
+      }
+    }
+
     LOG(info) << "Detector geometry configuration file used: " << configFile;
     addEntry(configFile);
   }

ALICE3/TableProducer/OTF/onTheFlyDetectorGeometryProvider.cxx

@@ -50,7 +50,7 @@ struct OnTheFlyDetectorGeometryProvider {
       // If the filename starts with ccdb: then take the file from the ccdb
       if (configFile.rfind("ccdb:", 0) == 0) {
         std::string ccdbPath = configFile.substr(5); // remove "ccdb:" prefix
-        const std::string outPath = "/tmp/DetGeo/";
+        const std::string outPath = "./.ALICE3/Configuration/";
         configFile = Form("%s/%s/snapshot.root", outPath.c_str(), ccdbPath.c_str());
         std::ifstream checkFile(configFile); // Check if file already exists
         if (!checkFile.is_open()) {          // File does not exist, retrieve from CCDB
@@ -64,6 +64,7 @@ struct OnTheFlyDetectorGeometryProvider {
         }
         detectorConfiguration.value[idx] = configFile; // Update the filename to the local file
       }
+      LOG(info) << "Adding " << configFile << "geometry container";
       geometryContainer.addEntry(configFile);
       idx++;
     }