~ubuntu-branches/ubuntu/precise/torque/precise-updates

/*
*         OpenPBS (Portable Batch System) v2.3 Software License
*
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*
* This license covers use of the OpenPBS v2.3 software (the "Software") at
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* Software to other sites and locations.  Use and redistribution of
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/* $Id: comment.c 2367 2008-09-03 17:17:34Z josh $ */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "pbs_error.h"
#include "pbs_ifl.h"
#include "log.h"

#include "toolkit.h"
#include "gblxvars.h"

extern int connector;

static int schd_alterserver(int sv_conn, char *name, char *value);
int schd_alterjob(int sv_conn, Job *job, char *name, char *value,
                  char *resource);

/*
 * Record the reason that the current candidate job cannot currently run.
 * When it is decided that the job will remain queued, place the reason
 * string in the comment field of the job structure.
 */
void
schd_comment_job(Job *job, char *reason, int optional)
  {
  char   *id = "schd_comment_job";
  char   *msg_ptr;
  char   *old_msg;

  /*
   * If the 'optional' argument is true, then this comment is optional.
   * Do not bother commenting this job if this is not the first time it
   * has been seen, and it has been recently modified (hopefully it was
   * a comment change).  If there is no comment for the job, comment it
   * this time.
   */

  if (optional &&
      (!schd_FirstRun) &&
      (job->comment != NULL) &&
      !(job->flags & JFLAGS_FIRST_SEEN) &&
      (MIN_COMMENT_AGE && ((schd_TimeNow - job->mtime) < MIN_COMMENT_AGE)))
    {
    return;
    }

  if (reason == NULL)
    msg_ptr = "";
  else
    msg_ptr = reason;

  old_msg = job->comment;

  /* If there is no old message, or they are different, set it. */
  if ((old_msg == NULL) || (strcmp(msg_ptr, old_msg) != 0))
    {

    /* Alter PBS' view of the job. */
    schd_alterjob(connector, job, ATTR_comment, msg_ptr, NULL);

    /* Copy the new comment into the job field. */

    if (job->comment)
      free(job->comment);

    job->comment = schd_strdup(msg_ptr);

    if (job->comment == NULL)
      {
      log_record(PBSEVENT_SYSTEM, PBS_EVENTCLASS_SERVER, id,
                 "schd_strdup(job->comment)");
      return;
      }
    }

  return;
  }

void
schd_comment_server(char *reason)
  {
  char   *id = "schd_comment_server";
  char   *msg_ptr;
  static char *old_msg = NULL;

  if (reason == NULL)
    msg_ptr = "";
  else
    msg_ptr = reason;

  if (old_msg == NULL)
    {
    old_msg = (char *)malloc(MAX_TXT);

    if (old_msg == NULL)
      {
      log_record(PBSEVENT_SYSTEM, PBS_EVENTCLASS_SERVER, id,
                 "malloc(old_msg)");
      return;
      }

    old_msg[0] = '\0';
    }

  if (strncmp(msg_ptr, old_msg, MAX_TXT - 1) != 0)
    {
    schd_alterserver(connector, ATTR_comment, msg_ptr);
    strncpy(old_msg, msg_ptr, MAX_TXT - 1);
    }

  return;
  }

/* Alter a job's actual attributes. */
int
schd_alterjob(int sv_conn, Job *job, char *name, char *value, char *rsrc)
  {
  char   *id = "schd_alterjob";
  int     err;
  AttrList atp;

  if (schd_TEST_ONLY)
    {
    DBPRT(("%s: Would have altered job %s:\n", id, job->jobid));
    DBPRT(("%s: rsrc: %s, name: %s, value: %s\n", id,
           rsrc ? rsrc : "(NULL)",
           name ? name : "(NULL)",
           value ? value : "(NULL)"));
    return 0;
    }

  /* Fill the attribute structure with function parameters */
  atp.resource = rsrc;

  atp.value    = value;

  atp.name     = name;

  atp.next     = NULL;

  err = pbs_alterjob(sv_conn, job->jobid, &atp, NULL);

  if (err)
    {
    (void)sprintf(log_buffer,
                  "pbs_alterjob(%s, %s, %s, %s) failed: %d",
                  job->jobid, name, value, rsrc, pbs_errno);
    log_record(PBSEVENT_SYSTEM, PBS_EVENTCLASS_SERVER, id, log_buffer);
    }

  return (err);
  }

static int
schd_alterserver(int sv_conn, char *name, char *value)
  {
  char   *id = "schd_alterserver";
  int     err;
  AttrOpList alist;

  if (schd_TEST_ONLY)
    {
    DBPRT(("%s: Would have altered server %d:\n", id, sv_conn));
    DBPRT(("%s: name: %s, value: %s\n", id,
           name ? name : "(NULL)",
           value ? value : "(NULL)"));
    return 0;
    }

  /* Fill in the attribute struct with appropriate parameters */

  alist.resource = NULL;

  alist.value    = value;

  alist.name     = name;

  alist.next     = NULL;

  alist.op       = SET;

  err = pbs_manager(sv_conn, MGR_CMD_SET, MGR_OBJ_SERVER, "", &alist,
                    NULL);

  if (err)
    {
    (void)sprintf(log_buffer,
                  "pbs_alterserver(%s, %s) failed: %d", name, value, pbs_errno);
    log_record(PBSEVENT_SYSTEM, PBS_EVENTCLASS_SERVER, id, log_buffer);
    }

  return (err);
  }