Quit more gracefully if configuration incomplete

Belongs to #15.

etc/scdaq/scdaq.conf

@@ -59,7 +59,7 @@ enable_stream_processor:yes
 # Note: When changing the processing type, change also "output_filename_prefix"
 # in the file output section.
 #
-#processor_type:GMT
+processor_type:
 
 # Enable software zero-supression
 doZS:yes
@@ -70,9 +70,9 @@ doZS:yes
 ##
 ################################################################################
 
-#output_filename_prefix:scout_GMT
+output_filename_prefix:
 
-#output_filename_base:/fff/BU0/ramdisk/scdaq
+output_filename_base:
 
 max_file_size:8589934592
 

scripts/runSCdaq.sh

@@ -15,6 +15,10 @@ while true
 do
     echo "Starting scdaq..."
     /opt/scdaq/bin/scdaq --config /etc/scdaq/scdaq.conf 2>&1
+    if [[ ${PIPESTATUS[0]} == 78 ]]; then # Numerical value of EX_CONFIG.
+      # If the configuration is incomplete there's no point in us retrying forever..
+      exit 1
+    fi
     echo "Resetting the board..."
     ../scripts/reset-firmware.sh
     echo "Clearing caches..."

src/config.cc

@@ -5,6 +5,8 @@
 #include "log.h"
 
 config::config(std::string filename) {
+  bool valid = true;
+
   std::ifstream in(filename.c_str(), std::ios_base::in);
   std::string line;
   while (!std::getline(in, line).eof()) {
@@ -31,15 +33,22 @@ config::config(std::string filename) {
     std::string key = line.substr(0, delim);
     std::string value = line.substr(delim + 1);
 
-    if (key.empty() || value.empty()) {
+    if (key.empty()) {
       // Skip ill formated lines
       continue;
     }
 
-    // std::cout << "key: " << key << ", value: " << value << "\n";
+    if (value.empty()) {
+      LOG(ERROR) << "Configuration entry " << key << " has no value!";
+      valid &= false;
+    }
 
     vmap[key] = value;
   }
+
+  if (!valid) {
+    throw std::invalid_argument("Configuration error: Keys with no value detected!");
+  }
 }
 void config::print() const {
   for (std::map<std::string, std::string>::const_iterator it = vmap.begin(); it != vmap.end();

src/scdaq.cc

+#include <sysexits.h>
+
 #include <boost/asio.hpp>
 #include <boost/bind.hpp>
 #include <boost/thread.hpp>
@@ -197,7 +199,9 @@ int main(int argc, char *argv[]) {
     //    utility::report_elapsed_time((tbb::tick_count::now() -
     //    mainStartTime).seconds());
     return retval;
-
+  } catch (std::exception &e) {
+    LOG(FATAL) << "Configuration invalid! Error text is \"" << e.what() << "\" Bailing out.";
+    return EX_CONFIG;
   } catch (std::exception &e) {
     LOG(ERROR) << "Error occurred. error text is: \"" << e.what() << "\"";
     return 1;