ctdb-daemon: Replace ctdb_message with srvid abstraction

Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>

1 files changed, 0 insertions, 286 deletions

diff --git a/ctdb/common/ctdb_message.c b/ctdb/common/ctdb_message.c
deleted file mode 100644
index 0e19761da3d..00000000000
--- a/ctdb/common/ctdb_message.c
+++ /dev/null
@@ -1,286 +0,0 @@
-/* 
-   ctdb_message protocol code
-
-   Copyright (C) Andrew Tridgell  2007
-   Copyright (C) Amitay Isaacs  2013
-
-   This program is free software; you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
-   
-   This program is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
-   
-   You should have received a copy of the GNU General Public License
-   along with this program; if not, see <http://www.gnu.org/licenses/>.
-*/
-/*
-  see http://wiki.samba.org/index.php/Samba_%26_Clustering for
-  protocol design and packet details
-*/
-#include "includes.h"
-#include "tdb.h"
-#include "system/network.h"
-#include "system/filesys.h"
-#include "../include/ctdb_private.h"
-#include "lib/util/dlinklist.h"
-
-static int message_list_db_init(struct ctdb_context *ctdb)
-{
-	ctdb->message_list_indexdb = tdb_open("messagedb", 8192,
-					      TDB_INTERNAL|
-					      TDB_INCOMPATIBLE_HASH|
-					      TDB_DISALLOW_NESTING,
-					      O_RDWR|O_CREAT, 0);
-	if (ctdb->message_list_indexdb == NULL) {
-		DEBUG(DEBUG_ERR, ("Failed to create message list indexdb\n"));
-		return -1;
-	}
-
-	return 0;
-}
-
-static int message_list_db_add(struct ctdb_context *ctdb, uint64_t srvid,
-			       struct ctdb_message_list_header *h)
-{
-	int ret;
-	TDB_DATA key, data;
-
-	if (ctdb->message_list_indexdb == NULL) {
-		ret = message_list_db_init(ctdb);
-		if (ret < 0) {
-			return -1;
-		}
-	}
-
-	key.dptr = (uint8_t *)&srvid;
-	key.dsize = sizeof(uint64_t);
-
-	data.dptr = (uint8_t *)&h;
-	data.dsize = sizeof(struct ctdb_message_list_header *);
-
-	ret = tdb_store(ctdb->message_list_indexdb, key, data, TDB_INSERT);
-	if (ret < 0) {
-		DEBUG(DEBUG_ERR, ("Failed to add message list handler (%s)\n",
-				  tdb_errorstr(ctdb->message_list_indexdb)));
-		return -1;
-	}
-
-	return 0;
-}
-
-static int message_list_db_delete(struct ctdb_context *ctdb, uint64_t srvid)
-{
-	int ret;
-	TDB_DATA key;
-
-	if (ctdb->message_list_indexdb == NULL) {
-		return -1;
-	}
-
-	key.dptr = (uint8_t *)&srvid;
-	key.dsize = sizeof(uint64_t);
-
-	ret = tdb_delete(ctdb->message_list_indexdb, key);
-	if (ret < 0) {
-		DEBUG(DEBUG_ERR, ("Failed to delete message list handler (%s)\n",
-				  tdb_errorstr(ctdb->message_list_indexdb)));
-		return -1;
-	}
-
-	return 0;
-}
-
-static int message_list_db_fetch_parser(TDB_DATA key, TDB_DATA data,
-					void *private_data)
-{
-	struct ctdb_message_list_header **h =
-		(struct ctdb_message_list_header **)private_data;
-
-	if (data.dsize != sizeof(struct ctdb_message_list_header *)) {
-		return -1;
-	}
-
-	*h = *(struct ctdb_message_list_header **)data.dptr;
-	return 0;
-}
-
-static int message_list_db_fetch(struct ctdb_context *ctdb, uint64_t srvid,
-				 struct ctdb_message_list_header **h)
-{
-	TDB_DATA key;
-
-	if (ctdb->message_list_indexdb == NULL) {
-		return -1;
-	}
-
-	key.dptr = (uint8_t *)&srvid;
-	key.dsize = sizeof(uint64_t);
-
-	return tdb_parse_record(ctdb->message_list_indexdb, key,
-				message_list_db_fetch_parser, h);
-}
-
-/*
-  this dispatches the messages to the registered ctdb message handler
-*/
-int ctdb_dispatch_message(struct ctdb_context *ctdb, uint64_t srvid, TDB_DATA data)
-{
-	struct ctdb_message_list_header *h;
-	struct ctdb_message_list *m;
-	uint64_t srvid_all = CTDB_SRVID_ALL;
-	int ret;
-
-	ret = message_list_db_fetch(ctdb, srvid, &h);
-	if (ret == 0) {
-		for (m=h->m; m; m=m->next) {
-			m->message_handler(ctdb, srvid, data, m->message_private);
-		}
-	}
-
-	ret = message_list_db_fetch(ctdb, srvid_all, &h);
-	if (ret == 0) {
-		for(m=h->m; m; m=m->next) {
-			m->message_handler(ctdb, srvid, data, m->message_private);
-		}
-	}
-
-	return 0;
-}
-
-/*
-  called when a CTDB_REQ_MESSAGE packet comes in
-*/
-void ctdb_request_message(struct ctdb_context *ctdb, struct ctdb_req_header *hdr)
-{
-	struct ctdb_req_message *c = (struct ctdb_req_message *)hdr;
-	TDB_DATA data;
-
-	data.dsize = c->datalen;
-	data.dptr = talloc_memdup(c, &c->data[0], c->datalen);
-
-	ctdb_dispatch_message(ctdb, c->srvid, data);
-}
-
-/*
- * When header is freed, remove all the srvid handlers
- */
-static int message_header_destructor(struct ctdb_message_list_header *h)
-{
-	struct ctdb_message_list *m;
-
-	while (h->m != NULL) {
-		m = h->m;
-		DLIST_REMOVE(h->m, m);
-		TALLOC_FREE(m);
-	}
-
-	message_list_db_delete(h->ctdb, h->srvid);
-	DLIST_REMOVE(h->ctdb->message_list_header, h);
-
-	return 0;
-}
-
-/*
-  when a client goes away, we need to remove its srvid handler from the list
- */
-static int message_handler_destructor(struct ctdb_message_list *m)
-{
-	struct ctdb_message_list_header *h = m->h;
-
-	DLIST_REMOVE(h->m, m);
-	if (h->m == NULL) {
-		talloc_free(h);
-	}
-	return 0;
-}
-
-/*
-  setup handler for receipt of ctdb messages from ctdb_send_message()
-*/
-int ctdb_register_message_handler(struct ctdb_context *ctdb, 
-				  TALLOC_CTX *mem_ctx,
-				  uint64_t srvid,
-				  ctdb_msg_fn_t handler,
-				  void *private_data)
-{
-	struct ctdb_message_list_header *h;
-	struct ctdb_message_list *m;
-	int ret;
-
-	m = talloc_zero(mem_ctx, struct ctdb_message_list);
-	CTDB_NO_MEMORY(ctdb, m);
-
-	m->message_handler = handler;
-	m->message_private = private_data;
-
-	ret = message_list_db_fetch(ctdb, srvid, &h);
-	if (ret != 0) {
-		/* srvid not registered yet */
-		h = talloc_zero(ctdb, struct ctdb_message_list_header);
-		CTDB_NO_MEMORY(ctdb, h);
-
-		h->ctdb = ctdb;
-		h->srvid = srvid;
-
-		ret = message_list_db_add(ctdb, srvid, h);
-		if (ret < 0) {
-			talloc_free(m);
-			talloc_free(h);
-			return -1;
-		}
-
-		DLIST_ADD(ctdb->message_list_header, h);
-		talloc_set_destructor(h, message_header_destructor);
-	}
-
-	m->h = h;
-	DLIST_ADD(h->m, m);
-	talloc_set_destructor(m, message_handler_destructor);
-	return 0;
-}
-
-
-/*
-  setup handler for receipt of ctdb messages from ctdb_send_message()
-*/
-int ctdb_deregister_message_handler(struct ctdb_context *ctdb, uint64_t srvid, void *private_data)
-{
-	struct ctdb_message_list_header *h;
-	struct ctdb_message_list *m;
-	int ret;
-
-	ret = message_list_db_fetch(ctdb, srvid, &h);
-	if (ret != 0) {
-		return -1;
-	}
-
-	for (m=h->m; m; m=m->next) {
-		if (m->message_private == private_data) {
-			talloc_free(m);
-			return 0;
-		}
-	}
-
-	return -1;
-}
-
-
-/*
- * check if the given srvid exists
- */
-bool ctdb_check_message_handler(struct ctdb_context *ctdb, uint64_t srvid)
-{
-	struct ctdb_message_list_header *h;
-	int ret;
-
-	ret = message_list_db_fetch(ctdb, srvid, &h);
-	if (ret != 0 || h->m == NULL) {
-		return false;
-	}
-
-	return true;
-}