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/** BEGIN COPYRIGHT BLOCK
* Copyright (C) 2001 Sun Microsystems, Inc. Used by permission.
* Copyright (C) 2005 Red Hat, Inc.
* All rights reserved.
*
* License: GPL (version 3 or any later version).
* See LICENSE for details.
* END COPYRIGHT BLOCK **/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
/* abandon.c - decode and handle an ldap abandon operation */
/*
* Copyright (c) 1995 Regents of the University of Michigan.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted
* provided that this notice is preserved and that due credit is given
* to the University of Michigan at Ann Arbor. The name of the University
* may not be used to endorse or promote products derived from this
* software without specific prior written permission. This software
* is provided ``as is'' without express or implied warranty.
*/
#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include "slap.h"
void
do_abandon(Slapi_PBlock *pb)
{
int err, suppressed_by_plugin = 0;
ber_int_t id;
Connection *pb_conn = NULL;
Operation *pb_op = NULL;
Operation *o;
slapi_pblock_get(pb, SLAPI_OPERATION, &pb_op);
slapi_pblock_get(pb, SLAPI_CONNECTION, &pb_conn);
slapi_log_err(SLAPI_LOG_TRACE, "do_abandon", "->\n");
if (pb_op == NULL || pb_conn == NULL) {
slapi_log_err(SLAPI_LOG_ERR, "do_abandon", "NULL param: pb_conn (0x%p) pb_op (0x%p)\n",
pb_conn, pb_op);
return;
}
BerElement *ber = pb_op->o_ber;
/*
* Parse the abandon request. It looks like this:
*
* AbandonRequest := MessageID
*/
if (ber_scanf(ber, "i", &id) == LBER_ERROR) {
slapi_log_err(SLAPI_LOG_ERR,
"do_abandon", "ber_scanf failed (op=Abandon; params=ID)\n");
return;
}
slapi_pblock_set(pb, SLAPI_ABANDON_MSGID, &id);
/*
* in LDAPv3 there can be optional control extensions on
* the end of an LDAPMessage. we need to read them in and
* pass them to the backend.
*/
if ((err = get_ldapmessage_controls(pb, ber, NULL)) != 0) {
slapi_log_err(SLAPI_LOG_ERR,
"do_abandon", "get_ldapmessage_controls failed: %d (%s) (op=Abandon)\n",
err, ldap_err2string(err));
/* LDAP does not allow any response to an abandon */
return;
}
slapi_log_err(SLAPI_LOG_ARGS, "do_abandon", "id %d\n", id);
/*
* find the operation being abandoned and set the o_abandon
* flag. We don't allow the operation to abandon itself.
* It's up to the backend to periodically check this
* flag and abort the operation at a convenient time.
*/
pthread_mutex_lock(&(pb_conn->c_mutex));
for (o = pb_conn->c_ops; o != NULL; o = o->o_next) {
if (o->o_msgid == id && o != pb_op)
break;
}
if (o != NULL) {
const Slapi_DN *ts = NULL;
/*
* call the pre-abandon plugins. if they succeed, call
* the backend abandon function. then call the post-abandon
* plugins.
*/
/* ONREPL - plugins should be passed some information about abandoned operation */
/* target spec and abandoned operation type are used to decide which plugins
are applicable for the operation */
ts = operation_get_target_spec(o);
if (ts) {
operation_set_target_spec(pb_op, ts);
} else {
slapi_log_err(SLAPI_LOG_TRACE, "do_abandon", "no target spec of abandoned operation\n");
}
operation_set_abandoned_op(pb_op, o->o_abandoned_op);
if (plugin_call_plugins(pb, SLAPI_PLUGIN_PRE_ABANDON_FN) == 0) {
int rc = 0;
if (o->o_status != SLAPI_OP_STATUS_RESULT_SENT) {
o->o_status = SLAPI_OP_STATUS_ABANDONED;
} else {
o = NULL; /* nothing was abandoned */
}
slapi_pblock_set(pb, SLAPI_PLUGIN_OPRETURN, &rc);
plugin_call_plugins(pb, SLAPI_PLUGIN_POST_ABANDON_FN);
} else {
suppressed_by_plugin = 1;
}
} else {
slapi_log_err(SLAPI_LOG_TRACE, "do_abandon", "op not found\n");
}
if (0 == pagedresults_free_one_msgid_nolock(pb_conn, id)) {
slapi_log_access(LDAP_DEBUG_STATS, "conn=%" PRIu64
" op=%d ABANDON targetop=Simple Paged Results msgid=%d\n",
pb_conn->c_connid, pb_op->o_opid, id);
} else if (NULL == o) {
slapi_log_access(LDAP_DEBUG_STATS, "conn=%" PRIu64 " op=%d ABANDON"
" targetop=NOTFOUND msgid=%d\n",
pb_conn->c_connid, pb_op->o_opid, id);
} else if (suppressed_by_plugin) {
slapi_log_access(LDAP_DEBUG_STATS, "conn=%" PRIu64 " op=%d ABANDON"
" targetop=SUPPRESSED-BY-PLUGIN msgid=%d\n",
pb_conn->c_connid, pb_op->o_opid, id);
} else {
struct timespec o_hr_time_end;
slapi_operation_time_elapsed(o, &o_hr_time_end);
slapi_log_access(LDAP_DEBUG_STATS, "conn=%" PRIu64 " op=%d ABANDON"
" targetop=%d msgid=%d nentries=%d etime=%" PRId64 ".%010" PRId64 "\n",
pb_conn->c_connid, pb_op->o_opid, o->o_opid, id,
o->o_results.r.r_search.nentries, (int64_t)o_hr_time_end.tv_sec, (int64_t)o_hr_time_end.tv_nsec);
}
pthread_mutex_unlock(&(pb_conn->c_mutex));
/*
* Wake up the persistent searches, so they
* can notice if they've been abandoned.
*/
ps_wakeup_all();
}
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