1 files changed, 83 insertions, 0 deletions
diff --git a/config.cpp b/config.cpp
new file mode 100644
index 0000000..afb5cd2
--- /dev/null
+++ b/config.cpp
@@ -0,0 +1,83 @@
+#include "config.h"
+
+#include <boost/property_tree/ptree.hpp>
+#include <boost/property_tree/xml_parser.hpp>
+
+#include <iostream>
+#include <string>
+
+namespace pt = boost::property_tree;
+using namespace std::string_literals;
+
+namespace {
+ const std::string default_datapath {"/var/lib/whiteboard"};
+ const uint64_t default_maxage{0}; // timeout in seconds; 0 = no timeout
+ const std::string default_listen {"::1:9000"};
+ const int default_threads{1};
+ const int default_max_connections{1000};
+}
+
+Config::Config(const std::string& config_filename):
+ m_dataPath{default_datapath},
+ m_maxage{default_maxage},
+ m_listenAddress{"::1"},
+ m_listenPort{9000},
+ m_threads{default_threads},
+ m_max_connections{default_max_connections}
+{
+
+ try {
+  pt::ptree tree;
+
+  pt::read_xml(config_filename, tree, pt::xml_parser::no_comments | pt::xml_parser::trim_whitespace);
+
+  m_dataPath = tree.get<std::string>("config.datapath", default_datapath);
+  m_maxage = tree.get<uint64_t>("config.maxage", default_maxage);
+  std::string listen {tree.get<std::string>("config.port", default_listen)};
+  auto pos{listen.find_last_of(':')};
+  if (pos == std::string::npos)
+   throw std::runtime_error("Bad port address: "s + listen);
+
+  m_listenAddress = listen.substr(0, pos);
+  m_listenPort = std::stoi(listen.substr(pos + 1));
+  if (m_listenPort < 0 || m_listenPort > 65535)
+   throw std::runtime_error("Bad listen port: "s + std::to_string(m_listenPort));
+
+  m_threads = tree.get<int>("config.threads", default_threads);
+  
+  m_max_connections = tree.get<int>("config.maxconnections", default_max_connections);
+ } catch (const std::exception& ex) {
+  std::cerr << "Error reading config file " << config_filename << ". Using defaults." << std::endl;
+ }
+}
+
+std::string Config::getDataPath() const
+{
+ return m_dataPath;
+}
+
+uint64_t Config::getMaxage() const
+{
+ return m_maxage;
+}
+
+std::string Config::getListenAddress() const
+{
+ return m_listenAddress;
+}
+
+int Config::getListenPort() const
+{
+ return m_listenPort;
+}
+
+int Config::getThreads() const
+{
+ return m_threads;
+}
+
+int Config::getMaxConnections() const
+{
+ return m_max_connections;
+}
+