src/cli/getcommand.cpp

   1 #include <ostream>
   2 #include <cstdlib>
   3 #include "private/cli/commandmap.hpp"
   4 #include "private/cli/common.hpp"
   5 #include <sdl/syncstorage.hpp>
   6
   7 using namespace shareddatalayer;
   8 using namespace shareddatalayer::cli;
   9
  10 namespace
  11 {
  12     std::shared_ptr<shareddatalayer::SyncStorage> createSyncStorage(const SyncStorage::Namespace& ns,
  13                                                                     std::ostream& out)
  14     {
  15         try
  16         {
  17             auto sdl(shareddatalayer::SyncStorage::create());
  18             sdl->waitReady(ns, std::chrono::minutes(1));
  19             return sdl;
  20         }
  21         catch (const shareddatalayer::Exception& error)
  22         {
  23             out << "SyncStorage create failed: " << error.what() << std::endl;
  24         }
  25
  26         return nullptr;
  27     }
  28
  29     void get(shareddatalayer::SyncStorage& sdl,
  30              const SyncStorage::Namespace& ns,
  31              const SyncStorage::Key& key,
  32              std::ostream& out)
  33     {
  34         try
  35         {
  36             auto data(sdl.get(ns, {key}));
  37             out << data << std::endl;
  38         }
  39         catch (const shareddatalayer::Exception& error)
  40         {
  41             out << "get(" << ns << ", " << key << ") failed: "
  42                 << error.what() << std::endl;
  43         }
  44     }
  45
  46     int getCommand(std::ostream& out, const boost::program_options::variables_map& map)
  47     {
  48         auto ns(map["ns"].as<std::string>());
  49         auto key(map["key"].as<std::string>());
  50
  51         auto sdl(createSyncStorage(ns, out));
  52         if (nullptr == sdl)
  53             return EXIT_FAILURE;
  54         sdl->setOperationTimeout(std::chrono::seconds(5));
  55
  56         get(std::ref(*sdl), ns, key, out);
  57
  58         return EXIT_SUCCESS;
  59     }
  60 }
  61
  62 const char *longHelpGetCmd =
  63         "Use get SDL API to read data from storage under the namespace.\n\n"
  64         "Example: sdltool get --ns 'sdltool' --key 'key1'";
  65
  66 AUTO_REGISTER_COMMAND(std::bind(getCommand, std::placeholders::_1, std::placeholders::_3),
  67                       "get",
  68                       "get data with SDL API under the namespace",
  69                       longHelpGetCmd,
  70                       CommandMap::Category::UTIL,
  71                       30050,
  72                       ("ns,n", boost::program_options::value<std::string>()->default_value("sdltoolns"), "namespace to use")
  73                       ("key,k", boost::program_options::value<std::string>()->default_value("key1"), "key value")
  74                      );
  75