Junxiao Shi
88a062de78
Moving exit code to the context allows error handling routines to rely only on the context. Moving stdout and stderr streams to the context allows mocking in unit tests, and allows sending output to a buffer for pre-processing when we implement interactive mode. refs #3864 Change-Id: Ibf59c12405d0eaca0597835cb2e30125b7f70adb
127 lines
4.5 KiB
C++
127 lines
4.5 KiB
C++
/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
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/**
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* Copyright (c) 2014-2017, Regents of the University of California,
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* Arizona Board of Regents,
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* Colorado State University,
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* University Pierre & Marie Curie, Sorbonne University,
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* Washington University in St. Louis,
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* Beijing Institute of Technology,
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* The University of Memphis.
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*
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* This file is part of NFD (Named Data Networking Forwarding Daemon).
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* See AUTHORS.md for complete list of NFD authors and contributors.
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*
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* NFD is free software: you can redistribute it and/or modify it under the terms
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* of the GNU General Public License as published by the Free Software Foundation,
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* either version 3 of the License, or (at your option) any later version.
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*
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* NFD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* NFD, e.g., in COPYING.md file. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "legacy-status.hpp"
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#include "core/version.hpp"
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#include <boost/program_options.hpp>
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namespace nfd {
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namespace tools {
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namespace nfdc {
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static void
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showUsage(std::ostream& os, const boost::program_options::options_description& cmdOptions)
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{
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os << "Usage: nfd-status [options]\n\n"
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<< "Show NFD version and status information.\n\n"
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<< cmdOptions;
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}
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/** \brief parse legacy nfd-status command line, and show usage if necessary
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* \return if first item is -1, caller should retrieve and display StatusReport;
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* otherwise, caller should immediately exit with the specified exit code
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*/
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static std::tuple<int, StatusReportOptions>
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parseCommandLine(ExecuteContext& ctx, const std::vector<std::string>& args)
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{
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StatusReportOptions options;
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namespace po = boost::program_options;
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po::options_description cmdOptions("StatusReportOptions");
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cmdOptions.add_options()
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("help,h", "print this help message")
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("version,V", "show program version")
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("general,v", po::bool_switch(&options.wantForwarderGeneral), "show general status")
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("channels,c", po::bool_switch(&options.wantChannels), "show channels")
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("faces,f", po::bool_switch(&options.wantFaces), "show faces")
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("fib,b", po::bool_switch(&options.wantFib), "show FIB entries")
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("rib,r", po::bool_switch(&options.wantRib), "show RIB routes")
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("sc,s", po::bool_switch(&options.wantStrategyChoice), "show strategy choice entries")
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("xml,x", "output as XML instead of text (implies -vcfbrs)");
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po::variables_map vm;
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try {
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po::store(po::command_line_parser(args).options(cmdOptions).run(), vm);
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po::notify(vm);
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}
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catch (const po::error& e) {
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ctx.err << e.what() << "\n";
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showUsage(ctx.err, cmdOptions);
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return std::make_tuple(2, options);
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}
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if (vm.count("help") > 0) {
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showUsage(ctx.out, cmdOptions);
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return std::make_tuple(0, options);
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}
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if (vm.count("version") > 0) {
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ctx.out << "nfd-status " << NFD_VERSION_BUILD_STRING << "\n";
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return std::make_tuple(0, options);
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}
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if (vm.count("xml") > 0) {
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options.output = ReportFormat::XML;
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}
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if (options.output == ReportFormat::XML ||
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(!options.wantForwarderGeneral && !options.wantChannels && !options.wantFaces &&
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!options.wantFib && !options.wantRib && !options.wantStrategyChoice)) {
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options.wantForwarderGeneral = options.wantChannels = options.wantFaces =
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options.wantFib = options.wantRib = options.wantStrategyChoice = true;
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}
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return std::make_tuple(-1, options);
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}
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/** \brief the 'legacy-nfd-status' command
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*/
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static void
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legacyNfdStatus(ExecuteContext& ctx)
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{
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auto args = ctx.args.get<std::vector<std::string>>("args");
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int exitCode = -1;
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StatusReportOptions options;
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std::tie(exitCode, options) = parseCommandLine(ctx, args);
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if (exitCode >= 0) {
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ctx.exitCode = exitCode;
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return;
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}
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reportStatus(ctx, options);
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}
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void
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registerLegacyStatusCommand(CommandParser& parser)
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{
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CommandDefinition defLegacyNfdStatus("legacy-nfd-status", "");
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defLegacyNfdStatus
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.addArg("args", ArgValueType::ANY, Required::NO, Positional::YES);
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parser.addCommand(defLegacyNfdStatus, &legacyNfdStatus, AVAILABLE_IN_ALL & ~AVAILABLE_IN_HELP);
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}
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} // namespace nfdc
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} // namespace tools
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} // namespace nfd
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