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diff --git a/src/ticket.c b/src/ticket.c
index 0daa604..efab3a6 100644
--- a/src/ticket.c
+++ b/src/ticket.c
@@ -1,418 +1,424 @@
/*
* Copyright (C) 2011 Jiaju Zhang <jjzhang@suse.de>
*
* 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 2.1 of the License, or (at your option) any later version.
*
* This software 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 library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <arpa/inet.h>
#include <stdio.h>
#include <assert.h>
#include "ticket.h"
#include "config.h"
#include "pacemaker.h"
#include "list.h"
#include "log.h"
#include "paxos_lease.h"
#include "paxos.h"
#define PAXOS_MAGIC 0xDB12
#define TK_LINE 256
struct booth_msghdr {
uint16_t magic;
uint16_t checksum;
uint32_t len;
} __attribute__((packed));
struct ticket {
char id[BOOTH_NAME_LEN+1];
pl_handle_t handle;
int owner;
int expiry;
int ballot;
unsigned long long expires;
struct list_head list;
};
static LIST_HEAD(ticket_list);
static unsigned char *role;
int check_ticket(char *ticket)
{
int i;
if (!booth_conf)
return 0;
for (i = 0; i < booth_conf->ticket_count; i++) {
if (!strcmp(booth_conf->ticket[i].name, ticket))
return 1;
}
return 0;
}
int check_site(char *site, int *local)
{
int i;
if (!booth_conf)
return 0;
for (i = 0; i < booth_conf->node_count; i++) {
if (booth_conf->node[i].type == SITE
&& !strcmp(booth_conf->node[i].addr, site)) {
*local = booth_conf->node[i].local;
return 1;
}
}
return 0;
}
static int * ticket_priority(int i)
{
int j;
/* TODO: need more precise check */
for (j = 0; j < booth_conf->node_count; j++) {
if (booth_conf->ticket[i].weight[j] == 0)
return NULL;
}
return booth_conf->ticket[i].weight;
}
static int ticket_get_myid(void)
{
return booth_transport[booth_conf->proto].get_myid();
}
static void end_acquire(pl_handle_t handle, int result)
{
struct ticket *tk;
int found = 0;
if (result == 0) {
list_for_each_entry(tk, &ticket_list, list) {
if (tk->handle == handle) {
found = 1;
break;
}
}
if (!found)
log_error("BUG: ticket handle %ld does not exist",
handle);
log_info("ticket %s was granted/reovked successfully (site %d)",
tk->id, ticket_get_myid());
}
}
static int ticket_send(unsigned long id, void *value, int len)
{
int i, rv = -1;
struct booth_node *to = NULL;
struct booth_msghdr *hdr;
void *buf;
for (i = 0; i < booth_conf->node_count; i++) {
if (booth_conf->node[i].nodeid == id)
to = &booth_conf->node[i];
}
if (!to)
return rv;
buf = malloc(sizeof(struct booth_msghdr) + len);
if (!buf)
return -ENOMEM;
memset(buf, 0, sizeof(struct booth_msghdr) + len);
hdr = buf;
hdr->magic = htons(PAXOS_MAGIC);
hdr->len = htonl(sizeof(struct booth_msghdr) + len);
memcpy((char *)buf + sizeof(struct booth_msghdr), value, len);
rv = booth_transport[booth_conf->proto].send(
(unsigned long)to, buf, sizeof(struct booth_msghdr) + len);
free(buf);
return rv;
}
static int ticket_broadcast(void *value, int len)
{
void *buf;
struct booth_msghdr *hdr;
int rv;
buf = malloc(sizeof(struct booth_msghdr) + len);
if (!buf)
return -ENOMEM;
memset(buf, 0, sizeof(struct booth_msghdr) + len);
hdr = buf;
hdr->magic = htons(PAXOS_MAGIC);
hdr->len = htonl(sizeof(struct booth_msghdr) + len);
memcpy((char *)buf + sizeof(struct booth_msghdr), value, len);
rv = booth_transport[booth_conf->proto].broadcast(
buf, sizeof(struct booth_msghdr) + len);
free(buf);
return rv;
}
static int ticket_read(const void *name, int *owner, int *ballot,
unsigned long long *expires)
{
struct ticket *tk;
int found = 0;
list_for_each_entry(tk, &ticket_list, list) {
if (!strcmp(tk->id, name)) {
found = 1;
break;
}
}
if (!found) {
log_error("BUG: ticket_read failed (ticket %s does not exist)",
(char *)name);
return -1;
}
pcmk_handler.load_ticket(tk->id, &tk->owner, &tk->ballot, &tk->expires);
*owner = tk->owner;
*expires = tk->expires;
*ballot = tk->ballot;
return 0;
}
static int ticket_write(pl_handle_t handle, struct paxos_lease_result *result)
{
struct ticket *tk;
int found = 0;
list_for_each_entry(tk, &ticket_list, list) {
if (tk->handle == handle) {
found = 1;
break;
}
}
if (!found) {
log_error("BUG: ticket_write failed "
"(ticket handle %ld does not exist)", handle);
return -1;
}
tk->owner = result->owner;
tk->expires = result->expires;
tk->ballot = result->ballot;
if (tk->owner == ticket_get_myid()) {
pcmk_handler.store_ticket(tk->id, tk->owner, tk->ballot, tk->expires);
pcmk_handler.grant_ticket(tk->id);
} else if (tk->owner == -1) {
pcmk_handler.store_ticket(tk->id, tk->owner, tk->ballot, tk->expires);
pcmk_handler.revoke_ticket(tk->id);
} else
pcmk_handler.store_ticket(tk->id, tk->owner, tk->ballot, tk->expires);
return 0;
}
static void ticket_status_recovery(pl_handle_t handle)
{
paxos_lease_status_recovery(handle);
}
int ticket_recv(void *msg, int msglen)
{
struct booth_msghdr *hdr;
char *data;
hdr = msg;
if (ntohs(hdr->magic) != PAXOS_MAGIC ||
ntohl(hdr->len) != msglen) {
log_error("message received error");
return -1;
}
data = (char *)msg + sizeof(struct booth_msghdr);
return paxos_lease_on_receive(data,
msglen - sizeof(struct booth_msghdr));
}
int grant_ticket(char *ticket, int force)
{
struct ticket *tk;
int found = 0;
if (force) {
pcmk_handler.store_ticket(ticket, ticket_get_myid(), 0, -1);
pcmk_handler.grant_ticket(ticket);
return BOOTHC_RLT_SYNC_SUCC;
}
list_for_each_entry(tk, &ticket_list, list) {
if (!strcmp(tk->id, ticket)) {
found = 1;
break;
}
}
if (!found) {
log_error("ticket %s does not exist", ticket);
return BOOTHC_RLT_SYNC_FAIL;
}
if (tk->owner == ticket_get_myid())
return BOOTHC_RLT_SYNC_SUCC;
else {
paxos_lease_acquire(tk->handle, 1, end_acquire);
return BOOTHC_RLT_ASYNC;
}
}
int revoke_ticket(char *ticket, int force)
{
struct ticket *tk;
int found = 0;
list_for_each_entry(tk, &ticket_list, list) {
if (!strcmp(tk->id, ticket)) {
found = 1;
break;
}
}
if (!found) {
log_error("ticket %s does not exist", ticket);
return BOOTHC_RLT_SYNC_FAIL;
}
if (force) {
pcmk_handler.store_ticket(tk->id, -1, 0, 0);
pcmk_handler.revoke_ticket(tk->id);
}
if (tk->owner == -1)
return BOOTHC_RLT_SYNC_SUCC;
else {
paxos_lease_release(tk->handle);
return BOOTHC_RLT_ASYNC;
}
}
int list_ticket(char **pdata, unsigned int *len)
{
struct ticket *tk;
- char outstr[100];
+ char timeout_str[100];
+ char node_name[BOOTH_NAME_LEN];
char tmp[TK_LINE];
*pdata = NULL;
*len = 0;
list_for_each_entry(tk, &ticket_list, list) {
memset(tmp, 0, TK_LINE);
- strncpy(outstr, "INF", sizeof(outstr));
- if (tk->expires != 0) {
- strftime(outstr, sizeof(outstr), "%Y/%m/%d %H:%M:%S", localtime((time_t *)&tk->expires));
- }
- snprintf(tmp, TK_LINE, "ticket: %s, owner: %d, expires: %s\n",
- tk->id, tk->owner, outstr);
+ strncpy(timeout_str, "INF", sizeof(timeout_str));
+ strncpy(node_name, "None", sizeof(node_name));
+
+ if (tk->owner < MAX_NODES && tk->owner > -1)
+ strncpy(node_name, booth_conf->node[tk->owner].addr,
+ sizeof(node_name));
+ if (tk->expires != 0)
+ strftime(timeout_str, sizeof(timeout_str), "%Y/%m/%d %H:%M:%S",
+ localtime((time_t *)&tk->expires));
+ snprintf(tmp, TK_LINE, "ticket: %s, owner: %s, expires: %s\n",
+ tk->id, node_name, timeout_str);
*pdata = realloc(*pdata, *len + TK_LINE);
if (*pdata == NULL)
return -ENOMEM;
memset(*pdata + *len, 0, TK_LINE);
memcpy(*pdata + *len, tmp, TK_LINE);
*len += TK_LINE;
}
return 0;
}
const struct paxos_lease_operations ticket_operations = {
.get_myid = ticket_get_myid,
.send = ticket_send,
.broadcast = ticket_broadcast,
.catchup = ticket_read,
.notify = ticket_write,
};
int setup_ticket(void)
{
struct ticket *tk, *tmp;
int i, rv;
pl_handle_t plh;
int myid;
role = malloc(booth_conf->node_count * sizeof(unsigned char));
if (!role)
return -ENOMEM;
memset(role, 0, booth_conf->node_count * sizeof(unsigned char));
for (i = 0; i < booth_conf->node_count; i++) {
if (booth_conf->node[i].type == SITE)
role[i] = PROPOSER | ACCEPTOR | LEARNER;
else if (booth_conf->node[i].type == ARBITRATOR)
role[i] = ACCEPTOR | LEARNER;
}
for (i = 0; i < booth_conf->ticket_count; i++) {
tk = malloc(sizeof(struct ticket));
if (!tk) {
rv = -ENOMEM;
goto out;
}
memset(tk, 0, sizeof(struct ticket));
strcpy(tk->id, booth_conf->ticket[i].name);
tk->owner = -1;
tk->expiry = booth_conf->ticket[i].expiry;
if (!tk->expiry)
tk->expiry = DEFAULT_TICKET_EXPIRY;
list_add_tail(&tk->list, &ticket_list);
plh = paxos_lease_init(tk->id,
BOOTH_NAME_LEN,
tk->expiry,
booth_conf->node_count,
1,
role,
ticket_priority(i),
&ticket_operations);
if (plh <= 0) {
log_error("paxos lease initialization failed");
rv = plh;
goto out;
}
tk->handle = plh;
}
myid = ticket_get_myid();
assert(myid < booth_conf->node_count);
if (role[myid] & ACCEPTOR) {
list_for_each_entry(tk, &ticket_list, list) {
ticket_status_recovery(tk->handle);
}
}
return 0;
out:
list_for_each_entry_safe(tk, tmp, &ticket_list, list) {
list_del(&tk->list);
}
free(role);
return rv;
}

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