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Add a retry for failed connections

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This commit is contained in:
Howard Chu 2004-10-01 11:16:38 +00:00
parent fda3d6260e
commit 55f12a7eee
9 changed files with 104 additions and 53 deletions
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21
servers/slapd/back-ldap/add.c
View File

@ -46,10 +46,9 @@ ldap_back_add(
ber_int_t msgid;
dncookie dc;
int isupdate;
int do_retry = 1;
LDAPControl **ctrls = NULL;
#ifdef LDAP_BACK_PROXY_AUTHZ
int rc = LDAP_SUCCESS;
#endif /* LDAP_BACK_PROXY_AUTHZ */
Debug(LDAP_DEBUG_ARGS, "==> ldap_back_add: %s\n", op->o_req_dn.bv_val, 0, 0);
@ -128,13 +127,20 @@ ldap_back_add(
#ifdef LDAP_BACK_PROXY_AUTHZ
rc = ldap_back_proxy_authz_ctrl( lc, op, rs, &ctrls );
if ( rc != LDAP_SUCCESS ) {
send_ldap_result( op, rs );
rc = -1;
goto cleanup;
}
#endif /* LDAP_BACK_PROXY_AUTHZ */
retry:
rs->sr_err = ldap_add_ext(lc->ld, mdn.bv_val, attrs,
ctrls, NULL, &msgid);
rc = ldap_back_op_result( lc, op, rs, msgid, 1 );
if ( rs->sr_err == LDAP_UNAVAILABLE && do_retry ) {
do_retry = 0;
if ( ldap_back_retry (lc, op, rs )) goto retry;
}
#ifdef LDAP_BACK_PROXY_AUTHZ
cleanup:
if ( ctrls && ctrls != op->o_ctrls ) {
@ -142,7 +148,6 @@ cleanup:
free( ctrls );
}
#endif /* LDAP_BACK_PROXY_AUTHZ */
for (--i; i>= 0; --i) {
ch_free(attrs[i]->mod_vals.modv_bvals);
ch_free(attrs[i]);
@ -151,12 +156,6 @@ cleanup:
if ( mdn.bv_val != op->o_req_dn.bv_val ) {
free( mdn.bv_val );
}
#ifdef LDAP_BACK_PROXY_AUTHZ
if ( rc != LDAP_SUCCESS ) {
send_ldap_result( op, rs );
return -1;
}
#endif /* LDAP_BACK_PROXY_AUTHZ */
return ldap_back_op_result( lc, op, rs, msgid, 1 ) != LDAP_SUCCESS;
return rc;
}

1
servers/slapd/back-ldap/back-ldap.h
View File

@ -167,6 +167,7 @@ typedef struct dncookie {
int ldap_back_freeconn( Operation *op, struct ldapconn *lc );
struct ldapconn *ldap_back_getconn(struct slap_op *op, struct slap_rep *rs);
int ldap_back_dobind(struct ldapconn *lc, Operation *op, SlapReply *rs);
int ldap_back_retry(struct ldapconn *lc, Operation *op, SlapReply *rs);
int ldap_back_map_result(SlapReply *rs);
int ldap_back_op_result(struct ldapconn *lc, Operation *op, SlapReply *rs,
ber_int_t msgid, int sendok);

33
servers/slapd/back-ldap/bind.c
View File

@ -711,6 +711,39 @@ ldap_back_op_result(struct ldapconn *lc, Operation *op, SlapReply *rs,
return( ERR_OK( rs->sr_err ) ? 0 : -1 );
}
/* return true if bound, false if failed */
int
ldap_back_retry( struct ldapconn *lc, Operation *op, SlapReply *rs )
{
struct ldapinfo *li = (struct ldapinfo *)op->o_bd->be_private;
int vers = op->o_protocol;
LDAP *ld;
ldap_pvt_thread_mutex_lock( &lc->lc_mutex );
ldap_unbind( lc->ld );
lc->bound = 0;
rs->sr_err = ldap_initialize(&ld, li->url);
if (rs->sr_err != LDAP_SUCCESS) {
rs->sr_err = slap_map_api2result( rs );
if (rs->sr_text == NULL) {
rs->sr_text = "ldap_initialize() failed";
}
if (op->o_conn) send_ldap_result( op, rs );
rs->sr_text = NULL;
return 0;
}
/* Set LDAP version. This will always succeed: If the client
* bound with a particular version, then so can we.
*/
ldap_set_option(ld, LDAP_OPT_PROTOCOL_VERSION, (const void *)&vers);
/* FIXME: configurable? */
ldap_set_option(ld, LDAP_OPT_REFERRALS, LDAP_OPT_ON);
lc->ld = ld;
ldap_pvt_thread_mutex_unlock( &lc->lc_mutex );
return ldap_back_dobind( lc, op, rs );
}
#ifdef LDAP_BACK_PROXY_AUTHZ
/*
* ldap_back_proxy_authz_ctrl() prepends a proxyAuthz control

20
servers/slapd/back-ldap/compare.c
View File

@ -42,11 +42,10 @@ ldap_back_compare(
struct berval mdn = BER_BVNULL;
ber_int_t msgid;
int freeval = 0;
int do_retry = 1;
dncookie dc;
LDAPControl **ctrls = NULL;
#ifdef LDAP_BACK_PROXY_AUTHZ
int rc = LDAP_SUCCESS;
#endif /* LDAP_BACK_PROXY_AUTHZ */
lc = ldap_back_getconn(op, rs);
if (!lc || !ldap_back_dobind( lc, op, rs ) ) {
@ -104,13 +103,21 @@ ldap_back_compare(
#ifdef LDAP_BACK_PROXY_AUTHZ
rc = ldap_back_proxy_authz_ctrl( lc, op, rs, &ctrls );
if ( rc != LDAP_SUCCESS ) {
send_ldap_result( op, rs );
rc = -1;
goto cleanup;
}
#endif /* LDAP_BACK_PROXY_AUTHZ */
retry:
rs->sr_err = ldap_compare_ext( lc->ld, mdn.bv_val,
mapped_at.bv_val, &mapped_val,
ctrls, NULL, &msgid );
rc = ldap_back_op_result( lc, op, rs, msgid, 1 );
if ( rs->sr_err == LDAP_UNAVAILABLE && do_retry ) {
do_retry = 0;
if ( ldap_back_retry (lc, op, rs )) goto retry;
}
#ifdef LDAP_BACK_PROXY_AUTHZ
cleanup:
@ -126,12 +133,5 @@ cleanup:
if ( freeval ) {
free( mapped_val.bv_val );
}
#ifdef LDAP_BACK_PROXY_AUTHZ
if ( rc != LDAP_SUCCESS ) {
send_ldap_result( op, rs );
return -1;
}
#endif /* LDAP_BACK_PROXY_AUTHZ */
return( ldap_back_op_result( lc, op, rs, msgid, 1 ) );
return rc;
}

20
servers/slapd/back-ldap/delete.c
View File

@ -41,9 +41,8 @@ ldap_back_delete(
ber_int_t msgid;
dncookie dc;
LDAPControl **ctrls = NULL;
#ifdef LDAP_BACK_PROXY_AUTHZ
int do_retry = 1;
int rc = LDAP_SUCCESS;
#endif /* LDAP_BACK_PROXY_AUTHZ */
struct berval mdn = BER_BVNULL;
@ -74,12 +73,20 @@ ldap_back_delete(
ctrls = op->o_ctrls;
rc = ldap_back_proxy_authz_ctrl( lc, op, rs, &ctrls );
if ( rc != LDAP_SUCCESS ) {
send_ldap_result( op, rs );
rc = -1;
goto cleanup;
}
#endif /* LDAP_BACK_PROXY_AUTHZ */
retry:
rs->sr_err = ldap_delete_ext( lc->ld, mdn.bv_val,
ctrls, NULL, &msgid );
rc = ldap_back_op_result( lc, op, rs, msgid, 1 );
if ( rs->sr_err == LDAP_SERVER_DOWN && do_retry ) {
do_retry = 0;
if ( ldap_back_retry (lc, op, rs )) goto retry;
}
#ifdef LDAP_BACK_PROXY_AUTHZ
cleanup:
@ -93,12 +100,5 @@ cleanup:
free( mdn.bv_val );
}
#ifdef LDAP_BACK_PROXY_AUTHZ
if ( rc != LDAP_SUCCESS ) {
send_ldap_result( op, rs );
return -1;
}
#endif /* LDAP_BACK_PROXY_AUTHZ */
return( ldap_back_op_result( lc, op, rs, msgid, 1 ) );
return rc;
}

14
servers/slapd/back-ldap/extended.c
View File

@ -100,6 +100,7 @@ ldap_back_exop_passwd(
LDAPMessage *res;
ber_int_t msgid;
int rc, isproxy;
int do_retry = 1;
dncookie dc;
lc = ldap_back_getconn(op, rs);
@ -128,15 +129,12 @@ ldap_back_exop_passwd(
}
}
retry:
rc = ldap_passwd(lc->ld, isproxy ? &mdn : NULL,
qpw->rs_old.bv_val ? &qpw->rs_old : NULL,
qpw->rs_new.bv_val ? &qpw->rs_new : NULL,
op->o_ctrls, NULL, &msgid);
if (mdn.bv_val != op->o_req_dn.bv_val) {
free(mdn.bv_val);
}
if (rc == LDAP_SUCCESS) {
if (ldap_result(lc->ld, msgid, 1, NULL, &res) == -1) {
ldap_get_option(lc->ld, LDAP_OPT_ERROR_NUMBER, &rc);
@ -166,6 +164,10 @@ ldap_back_exop_passwd(
}
if (rc != LDAP_SUCCESS) {
rs->sr_err = slap_map_api2result( rs );
if ( rs->sr_err == LDAP_UNAVAILABLE && do_retry ) {
do_retry = 0;
if ( ldap_back_retry (lc, op, rs )) goto retry;
}
send_ldap_result(op, rs);
if (rs->sr_matched) free((char *)rs->sr_matched);
if (rs->sr_text) free((char *)rs->sr_text);
@ -173,5 +175,9 @@ ldap_back_exop_passwd(
rs->sr_text = NULL;
rc = -1;
}
if (mdn.bv_val != op->o_req_dn.bv_val) {
free(mdn.bv_val);
}
return rc;
}

18
servers/slapd/back-ldap/modify.c
View File

@ -47,6 +47,7 @@ ldap_back_modify(
ber_int_t msgid;
dncookie dc;
int isupdate;
int do_retry = 1;
LDAPControl **ctrls = NULL;
lc = ldap_back_getconn(op, rs);
@ -161,12 +162,20 @@ ldap_back_modify(
#ifdef LDAP_BACK_PROXY_AUTHZ
rc = ldap_back_proxy_authz_ctrl( lc, op, rs, &ctrls );
if ( rc != LDAP_SUCCESS ) {
send_ldap_result( op, rs );
rc = -1;
goto cleanup;
}
#endif /* LDAP_BACK_PROXY_AUTHZ */
retry:
rs->sr_err = ldap_modify_ext( lc->ld, mdn.bv_val, modv,
ctrls, NULL, &msgid );
rc = ldap_back_op_result( lc, op, rs, msgid, 1 );
if ( rs->sr_err == LDAP_UNAVAILABLE && do_retry ) {
do_retry = 0;
if ( ldap_back_retry (lc, op, rs )) goto retry;
}
cleanup:;
#ifdef LDAP_BACK_PROXY_AUTHZ
@ -185,13 +194,6 @@ cleanup:;
ch_free( mods );
ch_free( modv );
#ifdef LDAP_BACK_PROXY_AUTHZ
if ( rc != LDAP_SUCCESS ) {
send_ldap_result( op, rs );
return -1;
}
#endif /* LDAP_BACK_PROXY_AUTHZ */
return ldap_back_op_result( lc, op, rs, msgid, 1 );
return rc;
}

20
servers/slapd/back-ldap/modrdn.c
View File

@ -41,9 +41,8 @@ ldap_back_modrdn(
ber_int_t msgid;
dncookie dc;
LDAPControl **ctrls = NULL;
#ifdef LDAP_BACK_PROXY_AUTHZ
int do_retry = 1;
int rc = LDAP_SUCCESS;
#endif /* LDAP_BACK_PROXY_AUTHZ */
struct berval mdn = BER_BVNULL, mnewSuperior = BER_BVNULL;
@ -92,15 +91,23 @@ ldap_back_modrdn(
#ifdef LDAP_BACK_PROXY_AUTHZ
rc = ldap_back_proxy_authz_ctrl( lc, op, rs, &ctrls );
if ( rc != LDAP_SUCCESS ) {
send_ldap_result( op, rs );
rc = -1;
goto cleanup;
}
#endif /* LDAP_BACK_PROXY_AUTHZ */
retry:
rs->sr_err = ldap_rename( lc->ld, mdn.bv_val,
op->orr_newrdn.bv_val, mnewSuperior.bv_val,
op->orr_deleteoldrdn,
ctrls,
NULL, &msgid );
rc = ldap_back_op_result( lc, op, rs, msgid, 1 );
if ( rs->sr_err == LDAP_SERVER_DOWN && do_retry ) {
do_retry = 0;
if ( ldap_back_retry (lc, op, rs )) goto retry;
}
#ifdef LDAP_BACK_PROXY_AUTHZ
cleanup:
@ -118,13 +125,6 @@ cleanup:
free( mnewSuperior.bv_val );
}
#ifdef LDAP_BACK_PROXY_AUTHZ
if ( rc != LDAP_SUCCESS ) {
send_ldap_result( op, rs );
return -1;
}
#endif /* LDAP_BACK_PROXY_AUTHZ */
return( ldap_back_op_result( lc, op, rs, msgid, 1 ) );
return rc;
}

10
servers/slapd/back-ldap/search.c
View File

@ -57,6 +57,7 @@ ldap_back_search(
struct berval mfilter = BER_BVNULL;
int dontfreetext = 0;
int freeconn = 0;
int do_retry = 1;
dncookie dc;
LDAPControl **ctrls = NULL;
@ -141,6 +142,7 @@ ldap_back_search(
}
#endif /* LDAP_BACK_PROXY_AUTHZ */
retry:
rs->sr_err = ldap_search_ext( lc->ld, mbase.bv_val,
op->ors_scope, mfilter.bv_val,
mapped_attrs, op->ors_attrsonly,
@ -181,6 +183,8 @@ fail:;
Entry ent = {0};
struct berval bdn;
int abort = 0;
do_retry = 0;
e = ldap_first_entry( lc->ld, res );
rc = ldap_build_entry( op, e, &ent, &bdn,
LDAP_BUILD_ENTRY_PRIVATE );
@ -222,6 +226,7 @@ fail:;
char **references = NULL;
int cnt;
do_retry = 0;
rc = ldap_parse_reference( lc->ld, res,
&references, &rs->sr_ctrls, 1 );
@ -271,6 +276,11 @@ fail:;
}
if ( rc == -1 ) {
if ( do_retry ) {
do_retry = 0;
if ( ldap_back_retry( lc, op, rs ))
goto retry;
}
/* FIXME: invalidate the connection? */
rs->sr_err = LDAP_SERVER_DOWN;
freeconn = 1;