4 Copyright (C) Ronnie Sahlberg 2009
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, see <http://www.gnu.org/licenses/>.
21 #include "lib/events/events.h"
22 #include "lib/tdb/include/tdb.h"
23 #include "system/time.h"
24 #include "../include/ctdb_private.h"
25 #include "../include/ctdb.h"
27 #define MAX_LOG_ENTRIES 500000
28 #define MAX_LOG_SIZE 128
30 static int first_entry;
31 static int last_entry;
33 struct ctdb_log_entry {
36 char message[MAX_LOG_SIZE];
40 static struct ctdb_log_entry log_entries[MAX_LOG_ENTRIES];
43 * this function logs all messages for all levels to a ringbuffer
45 static void log_ringbuffer_v(const char *format, va_list ap)
49 log_entries[last_entry].message[0] = '\0';
51 ret = vsnprintf(&log_entries[last_entry].message[0], MAX_LOG_SIZE, format, ap);
56 log_entries[last_entry].level = this_log_level;
57 log_entries[last_entry].t = timeval_current();
60 if (last_entry >= MAX_LOG_ENTRIES) {
63 if (first_entry == last_entry) {
66 if (first_entry >= MAX_LOG_ENTRIES) {
71 void log_ringbuffer(const char *format, ...)
76 log_ringbuffer_v(format, ap);
82 static void ctdb_collect_log(struct ctdb_context *ctdb, struct ctdb_get_log_addr *log_addr)
89 DEBUG(DEBUG_ERR,("Marshalling log entries first:%d last:%d\n", first_entry, last_entry));
91 /* dump to a file, then send the file as a blob */
94 DEBUG(DEBUG_ERR,(__location__ " Unable to open tmpfile - %s\n", strerror(errno)));
98 tmp_entry = first_entry;
99 while (tmp_entry != last_entry) {
103 if (log_entries[tmp_entry].level > log_addr->level) {
105 if (tmp_entry >= MAX_LOG_ENTRIES) {
111 tm = localtime(&log_entries[tmp_entry].t.tv_sec);
112 strftime(tbuf, sizeof(tbuf)-1,"%Y/%m/%d %H:%M:%S", tm);
114 if (log_entries[tmp_entry].message) {
115 count += fprintf(f, "%s:%s %s", tbuf, get_debug_by_level(log_entries[tmp_entry].level), log_entries[tmp_entry].message);
119 if (tmp_entry >= MAX_LOG_ENTRIES) {
126 data.dptr = talloc_size(NULL, fsize);
127 CTDB_NO_MEMORY_VOID(ctdb, data.dptr);
128 data.dsize = fread(data.dptr, 1, fsize, f);
131 DEBUG(DEBUG_ERR,("Marshalling log entries into a blob of %d bytes\n", (int)data.dsize));
133 DEBUG(DEBUG_ERR,("Send log to %d:%d\n", (int)log_addr->pnn, (int)log_addr->srvid));
134 ctdb_send_message(ctdb, log_addr->pnn, log_addr->srvid, data);
136 talloc_free(data.dptr);
139 int32_t ctdb_control_get_log(struct ctdb_context *ctdb, TDB_DATA addr)
141 struct ctdb_get_log_addr *log_addr = (struct ctdb_get_log_addr *)addr.dptr;
144 /* spawn a child process to marshall the huge log blob and send it back
145 to the ctdb tool using a MESSAGE
148 if (child == (pid_t)-1) {
149 DEBUG(DEBUG_ERR,("Failed to fork a log collector child\n"));
154 if (switch_from_server_to_client(ctdb) != 0) {
155 DEBUG(DEBUG_CRIT, (__location__ "ERROR: failed to switch log collector child into client mode.\n"));
158 ctdb_collect_log(ctdb, log_addr);
166 int32_t ctdb_control_clear_log(struct ctdb_context *ctdb)