/* $Id: phase3.pc 3956 2010-01-05 20:56:56Z zacheiss $
 *
 * (c) Copyright 1988-1998 by the Massachusetts Institute of Technology.
 * For copying and distribution information, please see the file
 * <mit-copyright.h>.
 */

#include <mit-copyright.h>
#include <moira.h>
#include "dbck.h"

#include <stdio.h>

RCSID("$HeadURL: svn+ssh://svn.mit.edu/moira/trunk/moira/dbck/phase3.pc $ $Id: phase3.pc 3956 2010-01-05 20:56:56Z zacheiss $");

void empty_list_check(int id, void *list, void *hint);
void unref_string_check(int id, void *string, void *hint);
void noclu_mach_check(int id, void *machine, void *hint);

void empty_list_check(int id, void *list, void *hint)
{
  struct list *l = list;
  if (l->members == 0 && l->list_id != 0)
    printf("Warning: List %s is empty\n", l->name);
}


/* Used by other parts of the program to check that a string_id is good.
 * This returns the stringif it is, or NULL if it is not, and as a side effect
 * increments the string reference count.
 */

struct string *string_check(int id)
{
  struct string *s;

  s = (struct string *) hash_lookup(strings, id);
  if (!s)
    return s;
  s->refc++;
  return s;
}


void unref_string_check(int id, void *string, void *hint)
{
  struct string *s = string;

  if (s->refc == 0)
    {
      printf("Unreferenced string %s id %d\n", s->name, id);
      if (single_fix("Delete", 1))
	single_delete("strings", "string_id", id);
    }
}

/*  This test was disabled because the MIT Moira server, which
 *  initially only managed host information for workstations and
 *  servers in the Athena Computing Environment, has been extended to
 *  manage all hosts in the MIT.EDU domain (but not subdomains).
 */
void noclu_mach_check(int id, void *machine, void *hint)
{
  struct machine *m = machine;

  if (m->clucount == 0 && m->mach_id != 0)
    printf("Warning: machine %s is not in any clusters\n", m->name);
}

void phase3(void)
{
  printf("Phase 3 - Finding unused objects\n");

  if (warn)
    {
#ifndef ATHENA
      dprintf("Checking machines...\n");
      hash_step(machines, noclu_mach_check, NULL);
#endif
      dprintf("Checking lists...\n");
      hash_step(lists, empty_list_check, NULL);
    }

  dprintf("Checking strings...\n");
  hash_step(strings, unref_string_check, NULL);
}