rfctl.cc

/**************************************************************************
 * basf2 (Belle II Analysis Software Framework)                           *
 * Author: The Belle II Collaboration                                     *
 *                                                                        *
 * See git log for contributors and copyright holders.                    *
 * This file is licensed under LGPL-3.0, see LICENSE.md.                  *
 **************************************************************************/
// ----------------------------------------------------------------------
//  master.cc
//
//  A simple-minded NSM2 master program which does:
//  - text-base command line input with readline
//  - log message storage in a file
//    (no screen output as it conflicts with readline)
// ----------------------------------------------------------------------
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <stdarg.h>
#include <time.h>
#include <sys/time.h>
#include <sys/stat.h>
#include "nsm2/belle2nsm.h"
 
extern "C" {
#ifdef USE_READLINE
#include <readline/readline.h>
#undef CTRL /* also defined in sys/ioctl.h in solaris */
  extern int add_history(char*);
#endif
}
 
// -- global variables --------------------------------------------------
const char* master_logdir = ".";
FILE* master_logfp = 0;
 
// -- xreopenlog ----------------------------------------------------
//    log directory
// ----------------------------------------------------------------------
void
xreopenlog()
{
  static char logprefix[1024];
  char logfile[2048];
  time_t now = time(0);
  tm* cur = localtime(&now);
  struct stat statbuf;
 
  if (! logprefix[0]) {
    strcpy(logprefix, master_logdir);
    if (! logprefix[0]) strcpy(logprefix, ".");
    if (logprefix[strlen(logprefix) - 1] == '/') {
      logprefix[strlen(logprefix) - 1] = 0;
    }
    if (stat(logprefix, &statbuf) >= 0 && S_ISDIR(statbuf.st_mode)) {
      strcat(logprefix, "/master");
    }
  }
 
  sprintf(logfile, "%s.%04d%02d%02d.log", logprefix,
          cur->tm_year + 1900, cur->tm_mon + 1, cur->tm_mday);
  if (master_logfp != stdout) {
    if (master_logfp) fclose(master_logfp);
    if (!(master_logfp = fopen(logfile, "a"))) {
      printf("cannot open logfile %s\n", logfile);
      exit(1);
    }
  }
}
// -- xprintlog ---------------------------------------------------------
//    printlog
// ----------------------------------------------------------------------
void
xprintlog(const char* fmt, ...)
{
  void xlogtime(char* buf);
 
  if (master_logfp) {
    va_list ap;
    va_start(ap, fmt);
    char datebuf[32];
    xlogtime(datebuf);
    fputs(datebuf, master_logfp);
    vfprintf(master_logfp, fmt, ap);
    fputc('\n', master_logfp);
    va_end(ap);
 
    fflush(master_logfp);
  }
}
// -- xlogtime ----------------------------------------------------------
//    logtime
// ----------------------------------------------------------------------
void
xlogtime(char* buf)
{
  timeval now;
  tm* cur;
 
  gettimeofday(&now, 0);
  cur = localtime((time_t*)&now.tv_sec);
  /*
  static int lastday = -1;
  if (lastday != cur->tm_yday) {
    char datebuf[128];
    lastday = cur->tm_yday;
    xreopenlog();
    xprintlog(
      "------------------------------------------------------------------");
    sprintf(datebuf, "Date: %04d.%02d.%02d",
            cur->tm_year + 1900, cur->tm_mon + 1, cur->tm_mday);
    xprintlog(datebuf);
  }
  */
  sprintf(buf, "%02d:%02d:%02d.%03d ",
          cur->tm_hour, cur->tm_min, cur->tm_sec, (int)now.tv_usec / 1000);
}
// -- xgetargs ----------------------------------------------------------
int
xgetargs(char* buf, char* argv[])
{
  int argc = 0, inword = 0, inquote = 0;
  char* p = buf;
 
  while (*p) {
    if (*p == '\\') {
      if (*(p + 1) == 'n') {
        memmove(p, p + 1, strlen(p));
        *p = '\n';
      } else {
        memmove(p, p + 1, strlen(p));
      }
    } else if (*p == '"') {
      inquote = !inquote;
      memmove(p, p + 1, strlen(p));
      if (! inword) {
        argc++;
        *argv++ = p;
        inword = 1;
      }
      p--;
    } else if (isspace(*p) && !inquote && inword) {
      *p = 0;
      inword = 0;
    } else if (! isspace(*p) && !inword) {
      inword = 1;
      argc++;
      *argv++ = p;
    }
    p++;
  }
  if (inquote) return -1;
  return argc;
}
// -- ok_handler --------------------------------------------------------
//
// ----------------------------------------------------------------------
void
ok_handler(NSMmsg* /*msg*/, NSMcontext*)
{
  xprintlog("OK received");
}
// -- error_handler -----------------------------------------------------
//
// ----------------------------------------------------------------------
void
error_handler(NSMmsg* /*msg*/, NSMcontext*)
{
  xprintlog("ERROR received");
}
 
// -- msg_handler -----------------------------------------------------
//
// ----------------------------------------------------------------------
void
msg_handler(NSMmsg* /*msg*/, NSMcontext*)
{
  xprintlog("MSG received");
}
// -- main --------------------------------------------------------------
//    main does everything except callback functions
// ----------------------------------------------------------------------
int
main(int argc, char** argv)
{
  const char* program  = argv[0];
  const char* nodename = argv[1]; // need to check before using
  const char myname[] = "rfctl";
 
  char* buf = 0;
  char* av[128];
  char* prompt;
 
  //  xreopenlog();
  master_logfp = stdout;
 
  // ARGV check
  if (argc < 2) {
    nodename = myname;
  }
 
  // INIT
  if (! b2nsm_init(nodename)) {
    xprintlog("%s: INIT %s", program, b2nsm_strerror());
    return 1;
  }
  xprintlog("%s: INIT", program);
  b2nsm_logging(master_logfp);
 
  // handlers
  if (b2nsm_callback("OK", ok_handler) < 0) {
    xprintlog("%s: CALLBACK(OK) %s", program, b2nsm_strerror());
    return 1;
  }
  if (b2nsm_callback("ERROR", ok_handler) < 0) {
    xprintlog("%s: CALLBACK(ERROR) %s", program, b2nsm_strerror());
    return 1;
  }
 
  /*
  if ( b2nsm_callback("MSG", msg_handler ) < 0) {
    xprintlog("%s: CALLBACK(MSG) %s", program, b2nsm_strerror());
  }
  */
  // prompt
  prompt = (char*)malloc(strlen(nodename) + 2);
  strcpy(prompt, nodename);
  strcat(prompt, ">");
 
 
#ifdef USE_READLINE
  char* input = 0;
  char* prev = 0;
#endif
 
  // infinite loop
  while (1) {
#ifdef USE_READLINE
    /* On solaris, fgets returns without changing buf when it receives
       a network message (it doesn't happen on linux).  If the buffer
       is not initialized, it will produce a faulty input.
       */
    if (buf) free(buf);
    if (input) free(input);
    if (!(input = readline(prompt)))
      exit(1);
    buf = (char*)malloc(strlen(input) + 1);
    strcpy(buf, input);
 
    if (!prev || (*input && strcmp(prev, input) != 0)) {
      add_history(input);
      if (prev) free(prev);
      prev = (char*)malloc(strlen(input) + 1);
      strcpy(prev, input);
    }
#else
    static char buffer[1024];
    buffer[0] = 0;
    printf("%s", prompt);
    do {
      fgets(buffer, sizeof(buffer), stdin);
    } while (! buffer[0]); /* to cope with EINTR */
#endif
 
    int ac;
    if ((ac = xgetargs(buf, av)) <= 0) //TODO should there be buf or buffer?
      continue;
    printf("ac=%d av[0]=%s\n", ac, av[0]);
 
    if (strcasecmp(av[0], "q") == 0 || strcasecmp(av[0], "quit") == 0) {
      break;
    } else if (strcasecmp(av[0], "start") == 0) {
      if (ac < 4 || ! isdigit(av[2][0])) {
        printf("usage: start <node> <exp-number> <run-number>\n");
      } else {
        int pars[2];
        pars[0] = atoi(av[2]);
        pars[1] = atoi(av[3]);
        b2nsm_sendreq(av[1], "RC_START", 2, pars);
      }
    } else if (strcasecmp(av[0], "stop") == 0) {
      if (ac < 4) {
        printf("usage: start <node> <exp-number> <run-number>\n");
      } else {
        int pars[10];
        pars[0] = atoi(av[2]);
        pars[1] = atoi(av[3]);
        b2nsm_sendreq(av[1], "RC_STOP", 2, pars);
      }
    } else if (strcasecmp(av[0], "config") == 0) {
      if (ac < 2) {
        printf("usage: config <node>\n");
      } else {
        //        b2nsm_sendreq(av[1], "RC_LOAD", 0, 0);
        char scrfile[256];
        strcpy(scrfile, "run_processor.py");
        b2nsm_sendany(av[1], "RC_LOAD", 0, 0, sizeof(scrfile) + 1, scrfile, "sendreq");
      }
    } else if (strcasecmp(av[0], "unconfig") == 0) {
      if (ac < 2) {
        printf("usage: unconfig <node>\n");
      } else {
        b2nsm_sendreq(av[1], "RC_ABORT", 0, 0);
      }
    } else if (strcasecmp(av[0], "restart") == 0) {
      if (ac < 2) {
        printf("usage: restart <node>\n");
      } else {
        b2nsm_sendreq(av[1], "RC_RECOVER", 0, 0);
      }
    } else {
      printf("unknown request %s\n", av[0]);
    }
  }
 
  return 0; // never reached
}
// ----------------------------------------------------------------------
// -- (emacs outline mode setup)
// Local Variables: ***
// mode:outline-minor ***
// outline-regexp:"^// --[+ ]" ***
// End: ***