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ctdb-tools-ctdb: Update natgwlist to filter nodes by NATGW capability

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Check capabilities once to build a filtered node list instead of
repeatedly checking capabilities

Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
This commit is contained in:
Martin Schwenke 2014-02-18 15:52:37 +11:00 committed by Amitay Isaacs
parent 7710053864
commit 798bd58370
1 changed files with 55 additions and 14 deletions
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69
ctdb/tools/ctdb.c
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@ -1123,27 +1123,58 @@ struct natgw_node {
const char *addr;
};
/* talloc off the existing nodemap... */
static struct ctdb_node_map *talloc_nodemap(struct ctdb_node_map *nodemap)
{
return talloc_zero_size(nodemap,
offsetof(struct ctdb_node_map, nodes) +
nodemap->num * sizeof(struct ctdb_node_and_flags));
}
static struct ctdb_node_map *
filter_nodemap_by_capabilities(struct ctdb_context *ctdb,
struct ctdb_node_map *nodemap,
uint32_t required_capabilities)
{
int i;
uint32_t capabilities;
struct ctdb_node_map *ret;
ret = talloc_nodemap(nodemap);
CTDB_NO_MEMORY_NULL(ctdb, ret);
ret->num = 0;
for (i = 0; i < nodemap->num; i++) {
int res = ctdb_ctrl_getcapabilities(ctdb, TIMELIMIT(),
nodemap->nodes[i].pnn,
&capabilities);
if (res != 0) {
DEBUG(DEBUG_ERR, ("Unable to get capabilities from node %u\n",
nodemap->nodes[i].pnn));
talloc_free(ret);
return NULL;
}
if (!(capabilities & required_capabilities)) {
continue;
}
ret->nodes[ret->num] = nodemap->nodes[i];
ret->num++;
}
return ret;
}
static int find_natgw(struct ctdb_context *ctdb,
struct ctdb_node_map *nodemap, uint32_t flags,
uint32_t *pnn, const char **ip)
{
int i;
uint32_t capabilities;
int ret;
for (i=0;i<nodemap->num;i++) {
if (!(nodemap->nodes[i].flags & flags)) {
ret = ctdb_ctrl_getcapabilities(ctdb, TIMELIMIT(),
nodemap->nodes[i].pnn,
&capabilities);
if (ret != 0) {
DEBUG(DEBUG_ERR, ("Unable to get capabilities from node %u\n",
nodemap->nodes[i].pnn));
return -1;
}
if (!(capabilities&CTDB_CAP_NATGW)) {
continue;
}
*pnn = nodemap->nodes[i].pnn;
*ip = ctdb_addr_to_str(&nodemap->nodes[i].addr);
return 0;
@ -1166,6 +1197,7 @@ static int control_natgwlist(struct ctdb_context *ctdb, int argc, const char **a
struct natgw_node *natgw_nodes = NULL;
struct natgw_node *natgw_node;
struct ctdb_node_map *nodemap=NULL;
struct ctdb_node_map *cnodemap;
uint32_t mypnn, pnn;
const char *ip;
@ -1255,11 +1287,20 @@ static int control_natgwlist(struct ctdb_context *ctdb, int argc, const char **a
i++;
}
/* Get a nodemap that includes only the nodes with the NATGW
* capability */
cnodemap = filter_nodemap_by_capabilities(ctdb, nodemap,
CTDB_CAP_NATGW);
if (cnodemap == NULL) {
ret = -1;
goto done;
}
ret = 2; /* matches ENOENT */
pnn = -1;
ip = "0.0.0.0";
for (i = 0; exclude_flags[i] != 0; i++) {
ret = find_natgw(ctdb, nodemap,
ret = find_natgw(ctdb, cnodemap,
exclude_flags[i],
&pnn, &ip);
if (ret == -1) {