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-rw-r--r--libglusterfs/src/logging.c1074
1 files changed, 901 insertions, 173 deletions
diff --git a/libglusterfs/src/logging.c b/libglusterfs/src/logging.c
index 2bd40b2..f343731 100644
--- a/libglusterfs/src/logging.c
+++ b/libglusterfs/src/logging.c
@@ -22,7 +22,6 @@
#include <string.h>
#include <stdlib.h>
-#ifdef GF_USE_SYSLOG
#include <libintl.h>
#include <syslog.h>
#include <sys/stat.h>
@@ -32,7 +31,9 @@
#define GF_SYSLOG_CEE_FORMAT \
"@cee: {\"msg\": \"%s\", \"gf_code\": \"%u\", \"gf_message\": \"%s\"}"
#define GF_LOG_CONTROL_FILE "/etc/glusterfs/logger.conf"
-#endif /* GF_USE_SYSLOG */
+#define GF_LOG_BACKTRACE_DEPTH 5
+#define GF_LOG_BACKTRACE_SIZE 4096
+#define GF_LOG_TIMESTR_SIZE 256
#include "xlator.h"
#include "logging.h"
@@ -47,6 +48,19 @@
#include <execinfo.h>
#endif
+static char *gf_level_strings[] = {"", /* NONE */
+ "M", /* EMERGENCY */
+ "A", /* ALERT */
+ "C", /* CRITICAL */
+ "E", /* ERROR */
+ "W", /* WARNING */
+ "N", /* NOTICE */
+ "I", /* INFO */
+ "D", /* DEBUG */
+ "T", /* TRACE */
+ ""
+};
+
/* Ideally this should get moved to logging.h */
struct _msg_queue {
struct list_head msgs;
@@ -60,41 +74,77 @@ struct _log_msg {
void
gf_log_logrotate (int signum)
{
- THIS->ctx->log.logrotate = 1;
+ glusterfs_ctx_t *ctx = NULL;
+
+ ctx = THIS->ctx;
+
+ if (ctx)
+ ctx->log.logrotate = 1;
}
void
gf_log_enable_syslog (void)
{
- THIS->ctx->log.gf_log_syslog = 1;
+ glusterfs_ctx_t *ctx = NULL;
+
+ ctx = THIS->ctx;
+
+ if (ctx)
+ ctx->log.gf_log_syslog = 1;
}
void
gf_log_disable_syslog (void)
{
- THIS->ctx->log.gf_log_syslog = 0;
+ glusterfs_ctx_t *ctx = NULL;
+
+ ctx = THIS->ctx;
+
+ if (ctx)
+ ctx->log.gf_log_syslog = 0;
}
gf_loglevel_t
gf_log_get_loglevel (void)
{
- return THIS->ctx->log.loglevel;
+ glusterfs_ctx_t *ctx = NULL;
+
+ ctx = THIS->ctx;
+
+ if (ctx)
+ return ctx->log.loglevel;
+ else
+ /* return global defaluts (see gf_log_globals_init) */
+ return GF_LOG_INFO;
}
void
gf_log_set_loglevel (gf_loglevel_t level)
{
- THIS->ctx->log.loglevel = level;
-}
+ glusterfs_ctx_t *ctx = NULL;
+ ctx = THIS->ctx;
-gf_loglevel_t
-gf_log_get_xl_loglevel (void *this)
+ if (ctx)
+ ctx->log.loglevel = level;
+}
+
+void
+gf_log_flush (void)
{
- xlator_t *xl = this;
- if (!xl)
- return 0;
- return xl->loglevel;
+ xlator_t *this = NULL;
+ glusterfs_ctx_t *ctx = NULL;
+
+ this = THIS;
+ ctx = this->ctx;
+
+ if (ctx && ctx->log.logger == gf_logger_glusterlog) {
+ pthread_mutex_lock (&ctx->log.logfile_mutex);
+ fflush (ctx->log.gf_log_logfile);
+ pthread_mutex_unlock (&ctx->log.logfile_mutex);
+ }
+
+ return;
}
void
@@ -107,9 +157,142 @@ gf_log_set_xl_loglevel (void *this, gf_loglevel_t level)
xl->loglevel = level;
}
+/* TODO: The following get/set functions are yet not invoked from anywhere
+ * in the code. The _intention_ is to pass CLI arguments to various daemons
+ * that are started, which would then invoke these set APIs as required.
+ *
+ * glusterd would read the defaults from its .vol file configuration shipped
+ * as a part of the packages distributed.
+ *
+ * For any gluster* daemon that is started the shipped configuration becomes the
+ * default, if a volume has to change its logging format or logger, then a
+ * gluster CLI is invoked to set this property for the volume in question.
+ *
+ * The property is maintained by glusterd, and passed to the daemon as a CLI
+ * option, IOW persistence of the option is maintained by glusterd persistent
+ * storage (i.e .vol file) only
+ *
+ * care needs to be taken to configure and start daemons based on the versions
+ * that supports these features */
+gf_log_format_t
+gf_log_get_logformat (void)
+{
+ glusterfs_ctx_t *ctx = NULL;
+
+ ctx = THIS->ctx;
+
+ if (ctx)
+ return ctx->log.logformat;
+ else
+ /* return global defaluts (see gf_log_globals_init) */
+ return gf_logformat_withmsgid;
+}
+
+void
+gf_log_set_logformat (gf_log_format_t format)
+{
+ glusterfs_ctx_t *ctx = NULL;
+
+ ctx = THIS->ctx;
+
+ if (ctx)
+ ctx->log.logformat = format;
+}
+
+gf_log_logger_t
+gf_log_get_logger (void)
+{
+ glusterfs_ctx_t *ctx = NULL;
+
+ ctx = THIS->ctx;
+
+ if (ctx)
+ return ctx->log.logger;
+ else
+ /* return global defaluts (see gf_log_globals_init) */
+ return gf_logger_glusterlog;
+}
+
+void
+gf_log_set_logger (gf_log_logger_t logger)
+{
+ glusterfs_ctx_t *ctx = NULL;
+
+ ctx = THIS->ctx;
+
+ if (ctx)
+ ctx->log.logger = logger;
+}
+
+gf_loglevel_t
+gf_log_get_xl_loglevel (void *this)
+{
+ xlator_t *xl = this;
+ if (!xl)
+ return 0;
+ return xl->loglevel;
+}
+
+static void
+gf_log_rotate(glusterfs_ctx_t *ctx)
+{
+ int fd = -1;
+ FILE *new_logfile = NULL;
+ FILE *old_logfile = NULL;
+
+ /* not involving locks on initial check to speed it up */
+ if (ctx->log.logrotate) {
+ /* let only one winner through on races */
+ pthread_mutex_lock (&ctx->log.logfile_mutex);
+
+ if (!ctx->log.logrotate) {
+ pthread_mutex_unlock (&ctx->log.logfile_mutex);
+ return;
+ } else {
+ ctx->log.logrotate = 0;
+ pthread_mutex_unlock (&ctx->log.logfile_mutex);
+ }
+
+ fd = open (ctx->log.filename,
+ O_CREAT | O_RDONLY, S_IRUSR | S_IWUSR);
+ if (fd < 0) {
+ gf_log ("logrotate", GF_LOG_ERROR,
+ "%s", strerror (errno));
+ return;
+ }
+ close (fd);
+
+ new_logfile = fopen (ctx->log.filename, "a");
+ if (!new_logfile) {
+ gf_log ("logrotate", GF_LOG_CRITICAL,
+ "failed to open logfile %s (%s)",
+ ctx->log.filename, strerror (errno));
+ return;
+ }
+
+ pthread_mutex_lock (&ctx->log.logfile_mutex);
+ {
+ if (ctx->log.logfile)
+ old_logfile = ctx->log.logfile;
+
+ ctx->log.gf_log_logfile = ctx->log.logfile =
+ new_logfile;
+ }
+ pthread_mutex_unlock (&ctx->log.logfile_mutex);
+
+ if (old_logfile != NULL)
+ fclose (old_logfile);
+ }
+
+ return;
+}
+
void
gf_log_globals_fini (void)
{
+ /* TODO: Nobody is invoking the fini, but cleanup needs to happen here,
+ * needs cleanup for, log.ident, log.filename, closelog, log file close
+ * rotate state, possibly under a lock */
pthread_mutex_destroy (&THIS->ctx->log.logfile_mutex);
}
@@ -122,7 +305,8 @@ int
gf_log_fini (void *data)
{
glusterfs_ctx_t *ctx = data;
- int ret = 0;
+ int ret = 0;
+ FILE *old_logfile = NULL;
if (ctx == NULL) {
ret = -1;
@@ -132,8 +316,8 @@ gf_log_fini (void *data)
pthread_mutex_lock (&ctx->log.logfile_mutex);
{
if (ctx->log.logfile) {
- if (fclose (ctx->log.logfile) != 0)
- ret = -1;
+ old_logfile = ctx->log.logfile;
+
/* Logfile needs to be set to NULL, so that any
call to gf_log after calling gf_log_fini, will
log the message to stderr.
@@ -144,11 +328,13 @@ gf_log_fini (void *data)
}
pthread_mutex_unlock (&ctx->log.logfile_mutex);
+ if (old_logfile && (fclose (old_logfile) != 0))
+ ret = -1;
+
out:
return ret;
}
-#ifdef GF_USE_SYSLOG
/**
* gf_get_error_message -function to get error message for given error code
* @error_code: error code defined by log book
@@ -186,10 +372,13 @@ gf_openlog (const char *ident, int option, int facility)
_facility = LOG_LOCAL1;
}
+ /* TODO: Should check for errors here and return appropriately */
setlocale(LC_ALL, "");
bindtextdomain("gluster", "/usr/share/locale");
textdomain("gluster");
+ /* close the previous syslog if open as we are changing settings */
+ closelog ();
openlog(ident, _option, _facility);
}
@@ -347,7 +536,6 @@ gf_syslog (int error_code, int facility_priority, char *format, ...)
}
va_end (ap);
}
-#endif /* GF_USE_SYSLOG */
void
gf_log_globals_init (void *data)
@@ -359,47 +547,45 @@ gf_log_globals_init (void *data)
ctx->log.loglevel = GF_LOG_INFO;
ctx->log.gf_log_syslog = 1;
ctx->log.sys_log_level = GF_LOG_CRITICAL;
+ ctx->log.logger = gf_logger_glusterlog;
+ ctx->log.logformat = gf_logformat_withmsgid;
-#ifndef GF_USE_SYSLOG
#ifdef GF_LINUX_HOST_OS
/* For the 'syslog' output. one can grep 'GlusterFS' in syslog
for serious logs */
openlog ("GlusterFS", LOG_PID, LOG_DAEMON);
#endif
-#endif
+
}
int
gf_log_init (void *data, const char *file, const char *ident)
{
glusterfs_ctx_t *ctx = NULL;
- int fd = -1;
+ int fd = -1;
+ struct stat buf;
ctx = data;
-#if defined(GF_USE_SYSLOG)
- {
- /* use default ident and option */
- /* TODO: make FACILITY configurable than LOG_DAEMON */
- struct stat buf;
-
- if (stat (GF_LOG_CONTROL_FILE, &buf) == 0) {
- /* use syslog logging */
- ctx->log.log_control_file_found = 1;
- if (ident) {
- /* we need to keep this value as */
- /* syslog uses it on every logging */
- ctx->log.ident = gf_strdup (ident);
- gf_openlog (ctx->log.ident, -1, LOG_DAEMON);
- } else {
- gf_openlog (NULL, -1, LOG_DAEMON);
- }
- } else {
- /* use old style logging */
- ctx->log.log_control_file_found = 0;
- }
+ if (ident) {
+ ctx->log.ident = gf_strdup (ident);
+ }
+
+ /* we keep the files and the syslog open, so that on logger change, we
+ * are ready to log anywhere, that the new value specifies */
+ if (ctx->log.ident) {
+ gf_openlog (ctx->log.ident, -1, LOG_DAEMON);
+ } else {
+ gf_openlog (NULL, -1, LOG_DAEMON);
+ }
+ /* TODO: make FACILITY configurable than LOG_DAEMON */
+ if (stat (GF_LOG_CONTROL_FILE, &buf) == 0) {
+ /* use syslog logging */
+ ctx->log.log_control_file_found = 1;
+ } else {
+ /* use old style logging */
+ ctx->log.log_control_file_found = 0;
}
-#endif
if (!file){
fprintf (stderr, "ERROR: no filename specified\n");
@@ -407,7 +593,7 @@ gf_log_init (void *data, const char *file, const char *ident)
}
if (strcmp (file, "-") == 0) {
- file = "/dev/stderr";
+ file = "/dev/stderr";
}
ctx->log.filename = gf_strdup (file);
@@ -419,8 +605,8 @@ gf_log_init (void *data, const char *file, const char *ident)
fd = open (file, O_CREAT | O_RDONLY, S_IRUSR | S_IWUSR);
if (fd < 0) {
- fprintf (stderr, "ERROR: failed to create logfile \"%s\" (%s)\n",
- file, strerror (errno));
+ fprintf (stderr, "ERROR: failed to create logfile"
+ " \"%s\" (%s)\n", file, strerror (errno));
return -1;
}
close (fd);
@@ -440,21 +626,29 @@ gf_log_init (void *data, const char *file, const char *ident)
void
set_sys_log_level (gf_loglevel_t level)
{
- THIS->ctx->log.sys_log_level = level;
+ glusterfs_ctx_t *ctx = NULL;
+
+ ctx = THIS->ctx;
+
+ if (ctx)
+ ctx->log.sys_log_level = level;
}
int
-_gf_log_nomem (const char *domain, const char *file,
- const char *function, int line, gf_loglevel_t level,
- size_t size)
+_gf_log_callingfn (const char *domain, const char *file, const char *function,
+ int line, gf_loglevel_t level, const char *fmt, ...)
{
const char *basename = NULL;
xlator_t *this = NULL;
- struct timeval tv = {0,};
- int ret = 0;
- char msg[8092] = {0,};
+ char *str1 = NULL;
+ char *str2 = NULL;
+ char *msg = NULL;
char timestr[256] = {0,};
char callstr[4096] = {0,};
+ struct timeval tv = {0,};
+ size_t len = 0;
+ int ret = 0;
+ va_list ap;
glusterfs_ctx_t *ctx = NULL;
this = THIS;
@@ -479,7 +673,7 @@ _gf_log_nomem (const char *domain, const char *file,
"T", /* TRACE */
""};
- if (!domain || !file || !function) {
+ if (!domain || !file || !function || !fmt) {
fprintf (stderr,
"logging: %s:%s():%d: invalid argument\n",
__FILE__, __PRETTY_FUNCTION__, __LINE__);
@@ -497,28 +691,27 @@ _gf_log_nomem (const char *domain, const char *file,
do {
void *array[5];
char **callingfn = NULL;
- size_t bt_size = 0;
+ size_t size = 0;
- bt_size = backtrace (array, 5);
- if (bt_size)
- callingfn = backtrace_symbols (&array[2], bt_size-2);
+ size = backtrace (array, 5);
+ if (size)
+ callingfn = backtrace_symbols (&array[2], size-2);
if (!callingfn)
break;
- if (bt_size == 5)
+ if (size == 5)
snprintf (callstr, 4096, "(-->%s (-->%s (-->%s)))",
callingfn[2], callingfn[1], callingfn[0]);
- if (bt_size == 4)
+ if (size == 4)
snprintf (callstr, 4096, "(-->%s (-->%s))",
callingfn[1], callingfn[0]);
- if (bt_size == 3)
+ if (size == 3)
snprintf (callstr, 4096, "(-->%s)", callingfn[0]);
free (callingfn);
} while (0);
#endif /* HAVE_BACKTRACE */
-#if defined(GF_USE_SYSLOG)
if (ctx->log.log_control_file_found)
{
int priority;
@@ -529,30 +722,50 @@ _gf_log_nomem (const char *domain, const char *file,
} else {
priority = level - 1;
}
+
+ va_start (ap, fmt);
+ vasprintf (&str2, fmt, ap);
+ va_end (ap);
+
gf_syslog (GF_ERR_DEV, priority,
- "[%s:%d:%s] %s %s: no memory "
- "available for size (%"GF_PRI_SIZET")",
- basename, line, function, callstr, domain,
- size);
+ "[%s:%d:%s] %s %d-%s: %s",
+ basename, line, function,
+ callstr,
+ ((this->graph) ? this->graph->id:0), domain,
+ str2);
+
goto out;
}
-#endif /* GF_USE_SYSLOG */
+
ret = gettimeofday (&tv, NULL);
if (-1 == ret)
goto out;
+ va_start (ap, fmt);
gf_time_fmt (timestr, sizeof timestr, tv.tv_sec, gf_timefmt_FT);
snprintf (timestr + strlen (timestr), sizeof timestr - strlen (timestr),
".%"GF_PRI_SUSECONDS, tv.tv_usec);
- ret = sprintf (msg, "[%s] %s [%s:%d:%s] %s %s: no memory "
- "available for size (%"GF_PRI_SIZET")",
- timestr, level_strings[level],
- basename, line, function, callstr,
- domain, size);
+ ret = gf_asprintf (&str1, "[%s] %s [%s:%d:%s] %s %d-%s: ",
+ timestr, level_strings[level],
+ basename, line, function, callstr,
+ ((this->graph) ? this->graph->id:0), domain);
+ if (-1 == ret) {
+ goto out;
+ }
+
+ ret = vasprintf (&str2, fmt, ap);
if (-1 == ret) {
goto out;
}
+ va_end (ap);
+
+ len = strlen (str1);
+ msg = GF_MALLOC (len + strlen (str2) + 1, gf_common_mt_char);
+
+ strcpy (msg, str1);
+ strcpy (msg + len, str2);
+
pthread_mutex_lock (&ctx->log.logfile_mutex);
{
if (ctx->log.logfile) {
@@ -571,30 +784,82 @@ _gf_log_nomem (const char *domain, const char *file,
}
pthread_mutex_unlock (&ctx->log.logfile_mutex);
+
out:
+ GF_FREE (msg);
+
+ GF_FREE (str1);
+
+ FREE (str2);
+
return ret;
- }
+}
int
-_gf_log_callingfn (const char *domain, const char *file, const char *function,
- int line, gf_loglevel_t level, const char *fmt, ...)
+_gf_msg_plain_internal (gf_loglevel_t level, const char *msg)
{
- const char *basename = NULL;
- xlator_t *this = NULL;
- char *str1 = NULL;
- char *str2 = NULL;
- char *msg = NULL;
- char timestr[256] = {0,};
- char callstr[4096] = {0,};
- struct timeval tv = {0,};
- size_t len = 0;
- int ret = 0;
- va_list ap;
+ xlator_t *this = NULL;
+ glusterfs_ctx_t *ctx = NULL;
+ int priority;
+
+ this = THIS;
+ ctx = this->ctx;
+
+ /* log to the configured logging service */
+ switch (ctx->log.logger) {
+ case gf_logger_syslog:
+ if (ctx->log.log_control_file_found && ctx->log.gf_log_syslog) {
+ SET_LOG_PRIO (level, priority);
+
+ syslog (priority, "%s", msg);
+ break;
+ }
+ /* NOTE: If syslog control file is absent, which is another
+ * way to control logging to syslog, then we will fall through
+ * to the gluster log. The ideal way to do things would be to
+ * not have the extra control file check */
+ case gf_logger_glusterlog:
+ pthread_mutex_lock (&ctx->log.logfile_mutex);
+ {
+ if (ctx->log.logfile) {
+ fprintf (ctx->log.logfile, "%s\n", msg);
+ fflush (ctx->log.logfile);
+ } else {
+ fprintf (stderr, "%s\n", msg);
+ fflush (stderr);
+ }
+
+#ifdef GF_LINUX_HOST_OS
+ /* We want only serious logs in 'syslog', not our debug
+ * and trace logs */
+ if (ctx->log.gf_log_syslog && level &&
+ (level <= ctx->log.sys_log_level))
+ syslog ((level-1), "%s\n", msg);
+#endif
+ }
+ pthread_mutex_unlock (&ctx->log.logfile_mutex);
+
+ break;
+ }
+
+ return 0;
+}
+
+int
+_gf_msg_plain (gf_loglevel_t level, const char *fmt, ...)
+{
+ xlator_t *this = NULL;
+ int ret = 0;
+ va_list ap;
+ char *msg = NULL;
glusterfs_ctx_t *ctx = NULL;
this = THIS;
ctx = this->ctx;
+ if (!ctx)
+ goto out;
+
if (ctx->log.gf_log_xl_log_set) {
if (this->loglevel && (level > this->loglevel))
goto out;
@@ -602,141 +867,604 @@ _gf_log_callingfn (const char *domain, const char *file, const char *function,
if (level > ctx->log.loglevel)
goto out;
- static char *level_strings[] = {"", /* NONE */
- "M", /* EMERGENCY */
- "A", /* ALERT */
- "C", /* CRITICAL */
- "E", /* ERROR */
- "W", /* WARNING */
- "N", /* NOTICE */
- "I", /* INFO */
- "D", /* DEBUG */
- "T", /* TRACE */
- ""};
+ va_start (ap, fmt);
+ ret = vasprintf (&msg, fmt, ap);
+ va_end (ap);
+ if (-1 == ret) {
+ goto out;
+ }
- if (!domain || !file || !function || !fmt) {
- fprintf (stderr,
- "logging: %s:%s():%d: invalid argument\n",
- __FILE__, __PRETTY_FUNCTION__, __LINE__);
- return -1;
+ ret = _gf_msg_plain_internal (level, msg);
+
+ FREE (msg);
+
+out:
+ return ret;
+}
+
+int
+_gf_msg_vplain (gf_loglevel_t level, const char *fmt, va_list ap)
+{
+ xlator_t *this = NULL;
+ int ret = 0;
+ char *msg = NULL;
+ glusterfs_ctx_t *ctx = NULL;
+
+ this = THIS;
+ ctx = this->ctx;
+
+ if (!ctx)
+ goto out;
+
+ if (ctx->log.gf_log_xl_log_set) {
+ if (this->loglevel && (level > this->loglevel))
+ goto out;
}
+ if (level > ctx->log.loglevel)
+ goto out;
- basename = strrchr (file, '/');
- if (basename)
- basename++;
- else
- basename = file;
+ ret = vasprintf (&msg, fmt, ap);
+ if (-1 == ret) {
+ goto out;
+ }
+
+ ret = _gf_msg_plain_internal (level, msg);
+
+ FREE (msg);
+out:
+ return ret;
+}
+
+int
+_gf_msg_plain_nomem (gf_loglevel_t level, const char *msg)
+{
+ xlator_t *this = NULL;
+ int ret = 0;
+ glusterfs_ctx_t *ctx = NULL;
+
+ this = THIS;
+ ctx = this->ctx;
+
+ if (!ctx)
+ goto out;
+
+ if (ctx->log.gf_log_xl_log_set) {
+ if (this->loglevel && (level > this->loglevel))
+ goto out;
+ }
+ if (level > ctx->log.loglevel)
+ goto out;
+
+ ret = _gf_msg_plain_internal (level, msg);
+
+out:
+ return ret;
+}
#if HAVE_BACKTRACE
- /* Print 'calling function' */
- do {
- void *array[5];
- char **callingfn = NULL;
- size_t size = 0;
+void
+_gf_msg_backtrace_nomem (gf_loglevel_t level, int stacksize)
+{
+ xlator_t *this = NULL;
+ glusterfs_ctx_t *ctx = NULL;
+ void *array[200];
+ size_t bt_size = 0;
+ int fd = -1;
- size = backtrace (array, 5);
- if (size)
- callingfn = backtrace_symbols (&array[2], size-2);
- if (!callingfn)
- break;
+ this = THIS;
+ ctx = this->ctx;
- if (size == 5)
- snprintf (callstr, 4096, "(-->%s (-->%s (-->%s)))",
- callingfn[2], callingfn[1], callingfn[0]);
- if (size == 4)
- snprintf (callstr, 4096, "(-->%s (-->%s))",
- callingfn[1], callingfn[0]);
- if (size == 3)
- snprintf (callstr, 4096, "(-->%s)", callingfn[0]);
+ if (!ctx)
+ goto out;
- free (callingfn);
- } while (0);
-#endif /* HAVE_BACKTRACE */
+ /* syslog does not have fd support, hence no no-mem variant */
+ if (ctx->log.logger != gf_logger_glusterlog)
+ goto out;
-#if defined(GF_USE_SYSLOG)
- if (ctx->log.log_control_file_found)
+ if (ctx->log.gf_log_xl_log_set) {
+ if (this->loglevel && (level > this->loglevel))
+ goto out;
+ }
+ if (level > ctx->log.loglevel)
+ goto out;
+
+ bt_size = backtrace (array, ((stacksize <= 200)? stacksize : 200));
+ pthread_mutex_lock (&ctx->log.logfile_mutex);
{
- int priority;
- /* treat GF_LOG_TRACE and GF_LOG_NONE as LOG_DEBUG and
- other level as is */
- if (GF_LOG_TRACE == level || GF_LOG_NONE == level) {
- priority = LOG_DEBUG;
- } else {
- priority = level - 1;
+ fd = ctx->log.logfile?
+ fileno (ctx->log.logfile) :
+ fileno (stderr);
+ if (bt_size && (fd != -1)) {
+ /* print to the file fd, to prevent any
+ * allocations from backtrace_symbols */
+ backtrace_symbols_fd (&array[0], bt_size, fd);
}
+ }
+ pthread_mutex_unlock (&ctx->log.logfile_mutex);
- va_start (ap, fmt);
- vasprintf (&str2, fmt, ap);
- va_end (ap);
+out:
+ return;
+}
- gf_syslog (GF_ERR_DEV, priority,
- "[%s:%d:%s] %s %d-%s: %s",
- basename, line, function,
- callstr,
- ((this->graph) ? this->graph->id:0), domain,
- str2);
+int
+_gf_msg_backtrace (int stacksize, char *callstr, size_t strsize)
+{
+ int ret = -1;
+ int i = 0;
+ int size = 0;
+ int savstrsize = strsize;
+ void *array[200];
+ char **callingfn = NULL;
+
+ /* We chop off last 2 anyway, so if request is less than tolerance
+ * nothing to do */
+ if (stacksize < 3)
+ goto out;
+ size = backtrace (array, ((stacksize <= 200)? stacksize : 200));
+ if ((size - 3) < 0)
+ goto out;
+ if (size)
+ callingfn = backtrace_symbols (&array[2], size - 2);
+ if (!callingfn)
goto out;
+
+ ret = snprintf (callstr, strsize, "(");
+ PRINT_SIZE_CHECK (ret, out, strsize);
+
+ for ((i = size - 3); i >= 0; i--) {
+ ret = snprintf (callstr + savstrsize - strsize, strsize,
+ "-->%s ", callingfn[i]);
+ PRINT_SIZE_CHECK (ret, out, strsize);
}
-#endif /* GF_USE_SYSLOG */
+
+ ret = snprintf (callstr + savstrsize - strsize, strsize, ")");
+ PRINT_SIZE_CHECK (ret, out, strsize);
+out:
+ FREE (callingfn);
+ return ret;
+}
+#endif /* HAVE_BACKTRACE */
+
+int
+_gf_msg_nomem (const char *domain, const char *file,
+ const char *function, int line, gf_loglevel_t level,
+ size_t size)
+{
+ const char *basename = NULL;
+ xlator_t *this = NULL;
+ struct timeval tv = {0,};
+ int ret = 0;
+ int fd = -1;
+ char msg[2048] = {0,};
+ char timestr[GF_LOG_TIMESTR_SIZE] = {0,};
+ glusterfs_ctx_t *ctx = NULL;
+ int wlen = 0;
+ int priority;
+
+ this = THIS;
+ ctx = this->ctx;
+
+ if (!ctx)
+ goto out;
+
+ if (ctx->log.gf_log_xl_log_set) {
+ if (this->loglevel && (level > this->loglevel))
+ goto out;
+ }
+ if (level > ctx->log.loglevel)
+ goto out;
+
+ if (!domain || !file || !function) {
+ fprintf (stderr,
+ "logging: %s:%s():%d: invalid argument\n",
+ __FILE__, __PRETTY_FUNCTION__, __LINE__);
+ return -1;
+ }
+
+ GET_FILE_NAME_TO_LOG (file, basename);
+
ret = gettimeofday (&tv, NULL);
if (-1 == ret)
goto out;
- va_start (ap, fmt);
gf_time_fmt (timestr, sizeof timestr, tv.tv_sec, gf_timefmt_FT);
- snprintf (timestr + strlen (timestr), sizeof timestr - strlen (timestr),
- ".%"GF_PRI_SUSECONDS, tv.tv_usec);
-
- ret = gf_asprintf (&str1, "[%s] %s [%s:%d:%s] %s %d-%s: ",
- timestr, level_strings[level],
- basename, line, function, callstr,
- ((this->graph) ? this->graph->id:0), domain);
+ ret = snprintf (timestr + strlen (timestr),
+ sizeof timestr - strlen (timestr),
+ ".%"GF_PRI_SUSECONDS, tv.tv_usec);
if (-1 == ret) {
goto out;
}
- ret = vasprintf (&str2, fmt, ap);
+ /* TODO: Currently we print in the enhanced format, with a message ID
+ * of 0. Need to enhance this to support format as configured */
+ ret = snprintf (msg, sizeof msg, "[%s] %s [MSGID: %"PRIu64"]"
+ " [%s:%d:%s] %s: no memory "
+ "available for size (%"GF_PRI_SIZET")"
+ " [call stack follows]\n",
+ timestr, gf_level_strings[level], (uint64_t) 0,
+ basename, line, function, domain, size);
if (-1 == ret) {
goto out;
}
- va_end (ap);
+ /* log to the configured logging service */
+ switch (ctx->log.logger) {
+ case gf_logger_syslog:
+ if (ctx->log.log_control_file_found && ctx->log.gf_log_syslog) {
+ SET_LOG_PRIO (level, priority);
- len = strlen (str1);
- msg = GF_MALLOC (len + strlen (str2) + 1, gf_common_mt_char);
+ /* if syslog allocates, then this may fail, but we
+ * cannot do much about it at the moment */
+ /* There is no fd for syslog, hence no stack printed */
+ syslog (priority, "%s", msg);
+ break;
+ }
+ /* NOTE: If syslog control file is absent, which is another
+ * way to control logging to syslog, then we will fall through
+ * to the gluster log. The ideal way to do things would be to
+ * not have the extra control file check */
+ case gf_logger_glusterlog:
+ pthread_mutex_lock (&ctx->log.logfile_mutex);
+ {
+ fd = ctx->log.logfile? fileno (ctx->log.logfile) :
+ fileno (stderr);
+ if (fd == -1) {
+ pthread_mutex_unlock (&ctx->log.logfile_mutex);
+ goto out;
+ }
- strcpy (msg, str1);
- strcpy (msg + len, str2);
+ wlen = strlen (msg);
+
+ /* write directly to the fd to prevent out of order
+ * message and stack */
+ ret = write (fd, msg, wlen);
+ if (ret == -1) {
+ pthread_mutex_unlock (&ctx->log.logfile_mutex);
+ goto out;
+ }
+#ifdef GF_LINUX_HOST_OS
+ /* We want only serious log in 'syslog', not our debug
+ * and trace logs */
+ if (ctx->log.gf_log_syslog && level &&
+ (level <= ctx->log.sys_log_level))
+ syslog ((level-1), "%s\n", msg);
+#endif
+ }
+ pthread_mutex_unlock (&ctx->log.logfile_mutex);
+
+#ifdef HAVE_BACKTRACE
+ _gf_msg_backtrace_nomem (level, GF_LOG_BACKTRACE_DEPTH);
+#endif
+
+ break;
+ }
+
+out:
+ return ret;
+}
+
+static int
+gf_log_syslog (const char *domain, const char *file, const char *function,
+ int32_t line, gf_loglevel_t level, int errnum,
+ uint64_t msgid, char **appmsgstr, char *callstr)
+{
+ int priority;
+ xlator_t *this = NULL;
+ glusterfs_ctx_t *ctx = NULL;
+
+ this = THIS;
+ ctx = this->ctx;
+
+ SET_LOG_PRIO (level, priority);
+
+ /* log with appropriate format */
+ if (ctx->log.logformat == gf_logformat_traditional) {
+ if (!callstr) {
+ if (errnum) {
+ syslog (priority, "[%s:%d:%s] %d-%s: %s [%s]",
+ file, line, function,
+ ((this->graph)?this->graph->id:0),
+ domain, *appmsgstr, strerror(errnum));
+ } else {
+ syslog (priority, "[%s:%d:%s] %d-%s: %s",
+ file, line, function,
+ ((this->graph)?this->graph->id:0),
+ domain, *appmsgstr);
+ }
+ } else {
+ if (errnum) {
+ syslog (priority, "[%s:%d:%s] %s %d-%s:"
+ " %s [%s]",
+ file, line, function, callstr,
+ ((this->graph)?this->graph->id:0),
+ domain, *appmsgstr, strerror(errnum));
+ } else {
+ syslog (priority, "[%s:%d:%s] %s %d-%s: %s",
+ file, line, function, callstr,
+ ((this->graph)?this->graph->id:0),
+ domain, *appmsgstr);
+ }
+ }
+ } else if (ctx->log.logformat == gf_logformat_withmsgid) {
+ if (!callstr) {
+ if (errnum) {
+ syslog (priority, "[MSGID: %"PRIu64"]"
+ " [%s:%d:%s] %d-%s: %s [%s]",
+ msgid, file, line, function,
+ ((this->graph)?this->graph->id:0),
+ domain, *appmsgstr, strerror(errnum));
+ } else {
+ syslog (priority, "[MSGID: %"PRIu64"]"
+ " [%s:%d:%s] %d-%s: %s",
+ msgid, file, line, function,
+ ((this->graph)?this->graph->id:0),
+ domain, *appmsgstr);
+ }
+ } else {
+ if (errnum) {
+ syslog (priority, "[MSGID: %"PRIu64"]"
+ " [%s:%d:%s] %s %d-%s: %s [%s]",
+ msgid, file, line, function, callstr,
+ ((this->graph)?this->graph->id:0),
+ domain, *appmsgstr, strerror(errnum));
+ } else {
+ syslog (priority, "[MSGID: %"PRIu64"]"
+ " [%s:%d:%s] %s %d-%s: %s",
+ msgid, file, line, function, callstr,
+ ((this->graph)?this->graph->id:0),
+ domain, *appmsgstr);
+ }
+ }
+ } else if (ctx->log.logformat == gf_logformat_cee) {
+ /* TODO: Enhance CEE with additional parameters */
+ gf_syslog (GF_ERR_DEV, priority,
+ "[%s:%d:%s] %d-%s: %s",
+ file, line, function,
+ ((this->graph) ? this->graph->id:0),
+ domain, *appmsgstr);
+ } else {
+ /* NOTE: should not get here without logging */
+ }
+
+ /* TODO: There can be no errors from gf_syslog? */
+ return 0;
+}
+
+static int
+gf_log_glusterlog (const char *domain, const char *file, const char *function,
+ int32_t line, gf_loglevel_t level, int errnum,
+ uint64_t msgid, char **appmsgstr, char *callstr)
+{
+ char timestr[GF_LOG_TIMESTR_SIZE] = {0,};
+ struct timeval tv = {0,};
+ char *header = NULL;
+ char *footer = NULL;
+ char *msg = NULL;
+ size_t hlen = 0, flen = 0, mlen = 0;
+ int ret = 0;
+ xlator_t *this = NULL;
+ glusterfs_ctx_t *ctx = NULL;
+
+ this = THIS;
+ ctx = this->ctx;
+
+ /* rotate if required */
+ gf_log_rotate(ctx);
+
+ /* format the time stanp */
+ ret = gettimeofday (&tv, NULL);
+ if (-1 == ret)
+ goto out;
+ gf_time_fmt (timestr, sizeof timestr, tv.tv_sec, gf_timefmt_FT);
+ snprintf (timestr + strlen (timestr), sizeof timestr - strlen (timestr),
+ ".%"GF_PRI_SUSECONDS, tv.tv_usec);
+
+ /* generate header and footer */
+ if (ctx->log.logformat == gf_logformat_traditional) {
+ if (!callstr) {
+ ret = gf_asprintf (&header, "[%s] %s [%s:%d:%s]"
+ " %d-%s: ",
+ timestr, gf_level_strings[level],
+ file, line, function,
+ ((this->graph)?this->graph->id:0),
+ domain);
+ } else {
+ ret = gf_asprintf (&header, "[%s] %s [%s:%d:%s] %s"
+ " %d-%s: ",
+ timestr, gf_level_strings[level],
+ file, line, function, callstr,
+ ((this->graph)?this->graph->id:0),
+ domain);
+ }
+ if (-1 == ret) {
+ goto err;
+ }
+ } else { /* gf_logformat_withmsgid */
+ /* CEE log format unsupported in logger_glusterlog, so just
+ * print enhanced log format */
+ if (!callstr) {
+ ret = gf_asprintf (&header, "[%s] %s [MSGID: %"PRIu64"]"
+ " [%s:%d:%s] %d-%s: ",
+ timestr, gf_level_strings[level],
+ msgid, file, line, function,
+ ((this->graph)?this->graph->id:0),
+ domain);
+ } else {
+ ret = gf_asprintf (&header, "[%s] %s [MSGID: %"PRIu64"]"
+ " [%s:%d:%s] %s %d-%s: ",
+ timestr, gf_level_strings[level],
+ msgid, file, line, function, callstr,
+ ((this->graph)?this->graph->id:0),
+ domain);
+ }
+ if (-1 == ret) {
+ goto err;
+ }
+ }
+
+ if (errnum) {
+ ret = gf_asprintf (&footer, " [%s]",strerror(errnum));
+ if (-1 == ret) {
+ goto err;
+ }
+ }
+
+ /* generate the full message to log */
+ hlen = strlen (header);
+ flen = footer? strlen (footer) : 0;
+ mlen = strlen (*appmsgstr);
+ msg = GF_MALLOC (hlen + flen + mlen + 1, gf_common_mt_char);
+
+ strcpy (msg, header);
+ strcpy (msg + hlen, *appmsgstr);
+ if (footer)
+ strcpy (msg + hlen + mlen, footer);
pthread_mutex_lock (&ctx->log.logfile_mutex);
{
if (ctx->log.logfile) {
fprintf (ctx->log.logfile, "%s\n", msg);
+ fflush (ctx->log.logfile);
} else if (ctx->log.loglevel >= level) {
fprintf (stderr, "%s\n", msg);
+ fflush (stderr);
}
#ifdef GF_LINUX_HOST_OS
- /* We want only serious log in 'syslog', not our debug
- and trace logs */
+ /* We want only serious logs in 'syslog', not our debug
+ * and trace logs */
if (ctx->log.gf_log_syslog && level &&
- (level <= ctx->log.sys_log_level))
+ (level <= ctx->log.sys_log_level))
syslog ((level-1), "%s\n", msg);
#endif
}
+ /* TODO: Plugin in memory log buffer retention here. For logs not
+ * flushed during cores, it would be useful to retain some of the last
+ * few messages in memory */
pthread_mutex_unlock (&ctx->log.logfile_mutex);
-out:
+err:
GF_FREE (msg);
+ GF_FREE (header);
+ GF_FREE (footer);
- GF_FREE (str1);
+out:
+ return ret;
+}
- FREE (str2);
+static int
+_gf_msg_internal (const char *domain, const char *file, const char *function,
+ int32_t line, gf_loglevel_t level, int errnum, uint64_t msgid,
+ char **appmsgstr, char *callstr)
+{
+ const char *basename = NULL;
+ int ret = -1;
+ xlator_t *this = NULL;
+ glusterfs_ctx_t *ctx = NULL;
+
+ this = THIS;
+ ctx = this->ctx;
+
+ GET_FILE_NAME_TO_LOG (file, basename);
+
+ /* TODO: Plug in repeated message suppression for gluster logs here.
+ * Comparison of last few messages stored based on, appmsgstr, errnum
+ * msgid. */
+ /* log to the configured logging service */
+ switch (ctx->log.logger) {
+ case gf_logger_syslog:
+ if (ctx->log.log_control_file_found && ctx->log.gf_log_syslog) {
+ ret = gf_log_syslog (domain, basename, function, line,
+ level, errnum, msgid, appmsgstr,
+ callstr);
+ break;
+ }
+ /* NOTE: If syslog control file is absent, which is another
+ * way to control logging to syslog, then we will fall through
+ * to the gluster log. The ideal way to do things would be to
+ * not have the extra control file check */
+ case gf_logger_glusterlog:
+ ret = gf_log_glusterlog (domain, basename, function, line,
+ level, errnum, msgid, appmsgstr,
+ callstr);
+ break;
+ }
+
+ return ret;
+}
+
+int
+_gf_msg (const char *domain, const char *file, const char *function,
+ int32_t line, gf_loglevel_t level, int errnum, int trace,
+ uint64_t msgid, const char *fmt, ...)
+{
+ int ret = 0;
+ char *msgstr = NULL;
+ va_list ap;
+ xlator_t *this = NULL;
+ glusterfs_ctx_t *ctx = NULL;
+ char callstr[GF_LOG_BACKTRACE_SIZE] = {0,};
+ int passcallstr = 0;
+
+ /* in args check */
+ if (!domain || !file || !function || !fmt) {
+ fprintf (stderr,
+ "logging: %s:%s():%d: invalid argument\n",
+ __FILE__, __PRETTY_FUNCTION__, __LINE__);
+ return -1;
+ }
+
+ this = THIS;
+ ctx = this->ctx;
+ if (ctx == NULL) {
+ /* messages before context initialization are ignored */
+ return -1;
+ }
+
+ /* check if we should be logging */
+ if (ctx->log.gf_log_xl_log_set) {
+ if (this->loglevel && (level > this->loglevel))
+ goto out;
+ }
+ if (level > ctx->log.loglevel)
+ goto out;
+
+#if HAVE_BACKTRACE
+ if (trace) {
+ ret = _gf_msg_backtrace (GF_LOG_BACKTRACE_DEPTH, callstr,
+ GF_LOG_BACKTRACE_DEPTH);
+ if (ret >= 0)
+ passcallstr = 1;
+ else
+ ret = 0;
+ }
+#endif /* HAVE_BACKTRACE */
+
+ /* form the message */
+ va_start (ap, fmt);
+ ret = vasprintf (&msgstr, fmt, ap);
+ va_end (ap);
+
+ /* log */
+ if (ret != -1)
+ ret = _gf_msg_internal(domain, file, function, line, level,
+ errnum, msgid, &msgstr,
+ (passcallstr? callstr : NULL));
+ else
+ /* man (3) vasprintf states on error strp contents
+ * are undefined, be safe */
+ msgstr = NULL;
+
+ FREE (msgstr);
+
+out:
return ret;
}
+/* TODO: Deprecate (delete) _gf_log, _gf_log_callingfn,
+ * once messages are changed to use _gf_msgXXX APIs for logging */
int
_gf_log (const char *domain, const char *file, const char *function, int line,
gf_loglevel_t level, const char *fmt, ...)
@@ -744,7 +1472,7 @@ _gf_log (const char *domain, const char *file, const char *function, int line,
const char *basename = NULL;
FILE *new_logfile = NULL;
va_list ap;
- char timestr[256] = {0,};
+ char timestr[GF_LOG_TIMESTR_SIZE] = {0,};
struct timeval tv = {0,};
char *str1 = NULL;
char *str2 = NULL;
@@ -790,7 +1518,6 @@ _gf_log (const char *domain, const char *file, const char *function, int line,
else
basename = file;
-#if defined(GF_USE_SYSLOG)
if (ctx->log.log_control_file_found)
{
int priority;
@@ -812,7 +1539,6 @@ _gf_log (const char *domain, const char *file, const char *function, int line,
((this->graph) ? this->graph->id:0), domain, str2);
goto err;
}
-#endif /* GF_USE_SYSLOG */
if (ctx->log.logrotate) {
ctx->log.logrotate = 0;
@@ -839,7 +1565,8 @@ _gf_log (const char *domain, const char *file, const char *function, int line,
if (ctx->log.logfile)
fclose (ctx->log.logfile);
- ctx->log.gf_log_logfile = ctx->log.logfile = new_logfile;
+ ctx->log.gf_log_logfile =
+ ctx->log.logfile = new_logfile;
}
pthread_mutex_unlock (&ctx->log.logfile_mutex);
@@ -1033,7 +1760,8 @@ gf_cmd_log (const char *domain, const char *fmt, ...)
goto out;
va_start (ap, fmt);
gf_time_fmt (timestr, sizeof timestr, tv.tv_sec, gf_timefmt_FT);
- snprintf (timestr + strlen (timestr), 256 - strlen (timestr),
+ snprintf (timestr + strlen (timestr),
+ GF_LOG_TIMESTR_SIZE - strlen (timestr),
".%"GF_PRI_SUSECONDS, tv.tv_usec);
ret = gf_asprintf (&str1, "[%s] %s : ",