thin-provisioning-tools/dbg-lib/commands.cc
Ming-Hung Tsai a81cef4467 [dbg] Pull out common code into dbg-lib
- Modularize common routines
- Extract the block_dumper interface for displaying blocks
- Remove inheritance from show_traits
2021-02-21 01:04:35 +08:00

80 lines
1.8 KiB
C++

#include "dbg-lib/commands.h"
#include "persistent-data/block.h"
#include <boost/lexical_cast.hpp>
#include <stdexcept>
using namespace dbg;
using namespace persistent_data;
using namespace std;
//----------------------------------------------------------------
namespace {
class hello : public dbg::command {
virtual void exec(dbg::strings const &args, ostream &out) {
out << "Hello, world!" << endl;
}
};
class exit_handler : public dbg::command {
public:
exit_handler(command_interpreter::ptr interpreter)
: interpreter_(interpreter) {
}
virtual void exec(dbg::strings const &args, ostream &out) {
out << "Goodbye!" << endl;
interpreter_->exit_main_loop();
}
private:
command_interpreter::ptr interpreter_;
};
class block_handler : public dbg::command {
public:
block_handler(block_manager::ptr bm, block_dumper::ptr dumper)
: bm_(bm), dumper_(dumper) {
}
virtual void exec(dbg::strings const &args, ostream &out) {
if (args.size() != 2)
throw runtime_error("incorrect number of arguments");
block_address block = boost::lexical_cast<block_address>(args[1]);
// no checksum validation for debugging purpose
block_manager::read_ref rr = bm_->read_lock(block);
dumper_->show(rr, out);
}
private:
block_manager::ptr bm_;
block_dumper::ptr dumper_;
};
}
//----------------------------------------------------------------
command::ptr
dbg::create_hello_handler()
{
return command::ptr(new hello());
}
command::ptr
dbg::create_exit_handler(command_interpreter::ptr interp)
{
return command::ptr(new exit_handler(interp));
}
command::ptr
dbg::create_block_handler(block_manager::ptr bm, block_dumper::ptr dumper)
{
return command::ptr(new block_handler(bm, dumper));
}
//----------------------------------------------------------------