~drizzle-trunk/drizzle/development

#include "config.h"

#include "binlog_encoding.h"

#include "binary_log.h"

#include "ioutil.h"

#include <google/protobuf/io/zero_copy_stream_impl.h>

#include <google/protobuf/io/coded_stream.h>

#include <iostream>

#include <sstream>

#include <string>

#include <map>

#include <getopt.h>

#include <sys/stat.h>

#include <fcntl.h>

using namespace google::protobuf::io;

typedef std::map<std::string,std::string> Assign;

void print_usage_and_exit(char *prog) {

  using std::cerr;

  const char *name= strrchr(prog, '/');

  if (name)

    ++name;

  else

    name= "binlog_writer";

  cerr << "Usage: " << name << " <options> <query>\n"

       << "    --output name    Append query to file <name> (default: 'log.bin')\n"

       << "    --set var=val    Set value of user variable for query\n"

       << "    --trans-id <id>  Set transaction id to <id>\n"

       << std::flush;

  exit(1);

}

void

write_query(CodedOutputStream* out,

            unsigned long trans_id,

            const std::string& query,

            const Assign& assign)

{

  BinaryLog::Query *message = new BinaryLog::Query;

  {

    BinaryLog::Header *header= message->mutable_header();

    header->set_seqno(time(NULL));

    header->set_server_id(1);

    header->set_trans_id(trans_id);

  }

  message->set_query(query);

  for (Assign::const_iterator ii= assign.begin() ;

       ii != assign.end() ;

       ++ii )

  {

    BinaryLog::Query::Variable *var= message->add_variable();

    var->set_name(ii->first);

    var->set_value(ii->second);

  }

  BinaryLog::Event event(BinaryLog::Event::QUERY, message);

  event.write(out);

}

int main(int argc, char *argv[])

{

  using std::ios;

  GOOGLE_PROTOBUF_VERIFY_VERSION;

  static struct option options[] = {

    { "set",       1 /* has_arg */, NULL, 0 },

    { "trans-id",  1 /* has_arg */, NULL, 0 },

    { "output",    1 /* has_arg */, NULL, 0 },

    { 0, 0, 0, 0 }

  };

  Assign assign;

  unsigned long trans_id= 0;

  const char* file_name= "log.bin";

  int ch, option_index;

  while ((ch= getopt_long(argc, argv, "", options, &option_index)) != -1) {

    if (ch == '?')

      print_usage_and_exit(argv[0]);

    switch (option_index) {

    case 0:                                     // --set

    {

      // Split the supplied string at the first '='

      char *end= optarg + strlen(optarg);

      char *pos= strchr(optarg, '=');

      if (!pos)

        pos= end;

      const std::string key(optarg, pos);

      const std::string value(pos == end ? end : pos+1, end);

      assign[key]= value;

    }

    case 1:                                     // --trans-id

      trans_id= strtoul(optarg, NULL, 0);

      break;

    case 2:                                     // --output

      file_name= optarg;

      break;

    }

  }

  if (optind >= argc)

    print_usage_and_exit(argv[0]);

  int outfd= open(file_name, O_WRONLY | O_CREAT | O_APPEND, 0644);

  if (outfd < 0)

  {

    perror("open");

    exit(1);

  }

  ZeroCopyOutputStream* raw_output = new FileOutputStream(outfd);

  CodedOutputStream* coded_output = new CodedOutputStream(raw_output);

  std::stringstream sout;

  sout << ioutil::join(" ", &argv[optind], &argv[argc]);

  write_query(coded_output, trans_id, sout.str(), assign);

  delete coded_output;

  delete raw_output;

  close(outfd);

  exit(0);

}