X-Git-Url: http://git.indexdata.com/?p=yaz-moved-to-github.git;a=blobdiff_plain;f=src%2Flog.c;h=38ecac7ef6f4a7962cd29828e4e3701cdae29500;hp=7885eaba8e923dbf35f67c99344fcab5c1345cd3;hb=05193e78a2553c93a61da19a39e1276b1a509bac;hpb=0f3124382d177e4bef923ab591220def33cc0b3c diff --git a/src/log.c b/src/log.c index 7885eab..38ecac7 100644 --- a/src/log.c +++ b/src/log.c @@ -1,13 +1,11 @@ -/* - * Copyright (C) 1995-2005, Index Data ApS +/* This file is part of the YAZ toolkit. + * Copyright (C) Index Data * See the file LICENSE for details. - * - * $Id: log.c,v 1.29 2005-09-16 21:46:24 adam Exp $ */ /** * \file log.c - * \brief Implements logging utility + * \brief Logging utility */ #if HAVE_CONFIG_H @@ -16,58 +14,67 @@ #ifdef WIN32 #include +#include #endif -#if YAZ_POSIX_THREADS -#include -#endif - -#if YAZ_GNU_THREADS -#include +#if HAVE_SYS_STAT_H +#include #endif - #include #include -#include #include #include #include #include -#include +#include +#include +#include #include +#include +#include #include +#if YAZ_POSIX_THREADS +#include +#endif -static NMEM_MUTEX log_mutex = 0; -static int mutex_init_flag = 0; /* not yet initialized */ +static int l_level = YLOG_DEFAULT_LEVEL; -#define HAS_STRERROR 1 +enum l_file_type { use_stderr, use_none, use_file }; -#if HAS_STRERROR +struct { + enum l_file_type type; + FILE *log_file; + char l_prefix[512]; + char l_prefix2[512]; + char l_fname[512]; +} yaz_log_info = { + use_stderr, 0, "", "", "" +}; -#else -char *strerror(int n) -{ - extern char *sys_errlist[]; - return sys_errlist[n]; -} +static void (*start_hook_func)(int, const char *, void *) = NULL; +static void *start_hook_info; -#endif +static void (*end_hook_func)(int, const char *, void *) = NULL; +static void *end_hook_info; -static int l_level = YLOG_DEFAULT_LEVEL; -static FILE *l_file = NULL; -static char l_prefix[512] = ""; -static char l_prefix2[512] = ""; -static char l_fname[512] = ""; +static void (*hook_func)(int, const char *, void *) = NULL; +static void *hook_info; static char l_old_default_format[] = "%H:%M:%S-%d/%m"; static char l_new_default_format[] = "%Y%m%d-%H%M%S"; #define TIMEFORMAT_LEN 50 +#define TID_LEN 30 static char l_custom_format[TIMEFORMAT_LEN] = ""; static char *l_actual_format = l_old_default_format; -/** l_max_size tells when to rotate the log. Default to 1 GB */ -static const int l_def_max_size = 1024*1024*1024; -static int l_max_size = 1024*1024*1024; +/** l_max_size tells when to rotate the log. The default value is + 0 which means DISABLED. This is to be preffered if YAZ runs + as a server using logrotate etc. + A positive size specifies the file size in bytes when a log rotate + will occur. Note that in order for this to work YAZ must have + permissions to do so. + */ +static int l_max_size = 0; #define MAX_MASK_NAMES 35 /* 32 bits plus a few combo names */ static struct { @@ -81,73 +88,145 @@ static struct { { YLOG_LOG, "log" }, { YLOG_ERRNO, ""}, { YLOG_MALLOC, "malloc"}, - { YLOG_APP, "app" }, + { YLOG_TID, "tid" }, + { YLOG_APP, "app" }, { YLOG_NOTIME, "notime" }, - { YLOG_APP2, "app2" }, + { YLOG_APP2, "app2" }, { YLOG_APP3, "app3" }, { YLOG_ALL, "all" }, { YLOG_FLUSH, "flush" }, - { YLOG_LOGLVL, "loglevel" }, + { YLOG_LOGLVL, "loglevel" }, { 0, "none" }, { 0, NULL } /* the rest will be filled in if the user defines dynamic modules*/ -}; +}; static unsigned int next_log_bit = YLOG_LAST_BIT<<1; /* first dynamic bit */ -static void init_mutex() +static YAZ_MUTEX log_mutex = 0; + +static void yaz_log_lock(void) +{ + yaz_mutex_enter(log_mutex); +} + +static void yaz_log_unlock(void) +{ + yaz_mutex_leave(log_mutex); +} + +static void internal_log_init(void) { + static int mutex_init_flag = 0; /* not yet initialized */ + char *env; + if (mutex_init_flag) return; - nmem_mutex_create(&log_mutex); - mutex_init_flag = 1; + mutex_init_flag = 1; /* here, 'cause nmem_mutex_create may call yaz_log */ + + if (log_mutex == 0) + yaz_mutex_create(&log_mutex); +#if YAZ_POSIX_THREADS + pthread_atfork(yaz_log_lock, yaz_log_unlock, yaz_log_unlock); +#endif + env = getenv("YAZ_LOG"); + if (env) + l_level = yaz_log_mask_str_x(env, l_level); } + FILE *yaz_log_file(void) { - if (!l_file) - l_file = stderr; - return l_file; + FILE *f = 0; + switch (yaz_log_info.type) + { + case use_stderr: f = stderr; break; + case use_none: f = 0; break; + case use_file: f = yaz_log_info.log_file; break; + } + return f; +} + +void yaz_log_close(void) +{ + if (yaz_log_info.type == use_file && yaz_log_info.log_file) + { + fclose(yaz_log_info.log_file); + yaz_log_info.log_file = 0; + } } void yaz_log_init_file(const char *fname) { - init_mutex(); + internal_log_init(); + + yaz_log_close(); if (fname) { - strncpy(l_fname, fname, sizeof(l_fname)-1); - l_fname[sizeof(l_fname)-1] = '\0'; + if (*fname == '\0') + yaz_log_info.type = use_stderr; /* empty name; use stderr */ + else + yaz_log_info.type = use_file; + strncpy(yaz_log_info.l_fname, fname, sizeof(yaz_log_info.l_fname)-1); + yaz_log_info.l_fname[sizeof(yaz_log_info.l_fname)-1] = '\0'; } else - l_fname[0] = '\0'; + { + yaz_log_info.type = use_none; /* NULL name; use no file at all */ + yaz_log_info.l_fname[0] = '\0'; + } yaz_log_reopen(); } static void rotate_log(const char *cur_fname) { - char newname[512]; - strncpy(newname, cur_fname, 509); - newname[509] = '\0'; /* make sure it is terminated */ - strcat(newname, ".1"); + int i; + #ifdef WIN32 /* windows can't rename a file if it is open */ - fclose(l_file); - l_file = 0; - MoveFileEx(cur_fname, newname, MOVEFILE_REPLACE_EXISTING); + yaz_log_close(); +#endif + for (i = 0; i<9; i++) + { + char fname_str[FILENAME_MAX]; + struct stat stat_buf; + + yaz_snprintf(fname_str, sizeof(fname_str), "%s.%d", cur_fname, i); + if (stat(fname_str, &stat_buf) != 0) + break; + } + for (; i >= 0; --i) + { + char fname_str[2][FILENAME_MAX]; + + if (i > 0) + yaz_snprintf(fname_str[0], sizeof(fname_str[0]), + "%s.%d", cur_fname, i-1); + else + yaz_snprintf(fname_str[0], sizeof(fname_str[0]), + "%s", cur_fname); + yaz_snprintf(fname_str[1], sizeof(fname_str[1]), + "%s.%d", cur_fname, i); +#ifdef WIN32 + MoveFileEx(fname_str[0], fname_str[1], MOVEFILE_REPLACE_EXISTING); #else - rename(cur_fname, newname); + rename(fname_str[0], fname_str[1]); #endif + } } + void yaz_log_init_level(int level) { - init_mutex(); + internal_log_init(); if ( (l_level & YLOG_FLUSH) != (level & YLOG_FLUSH) ) { l_level = level; yaz_log_reopen(); /* make sure we set buffering right */ - } else + } + else l_level = level; + if (l_level & YLOG_LOGLVL) { /* dump the log level bits */ const char *bittype = "Static "; @@ -156,10 +235,8 @@ void yaz_log_init_level(int level) yaz_log(YLOG_LOGLVL, "Setting log level to %d = 0x%08x", l_level, l_level); /* determine size of mask_names (locked) */ - nmem_mutex_enter(log_mutex); for (sz = 0; mask_names[sz].name; sz++) ; - nmem_mutex_leave(log_mutex); /* second pass without lock */ for (i = 0; i < sz; i++) if (mask_names[i].mask && *mask_names[i].name) @@ -177,22 +254,24 @@ void yaz_log_init_level(int level) void yaz_log_init_prefix(const char *prefix) { if (prefix && *prefix) - sprintf(l_prefix, "%.511s ", prefix); + yaz_snprintf(yaz_log_info.l_prefix, + sizeof(yaz_log_info.l_prefix), "%s ", prefix); else - *l_prefix = 0; + *yaz_log_info.l_prefix = 0; } void yaz_log_init_prefix2(const char *prefix) { if (prefix && *prefix) - sprintf(l_prefix2, "%.511s ", prefix); + yaz_snprintf(yaz_log_info.l_prefix2, + sizeof(yaz_log_info.l_prefix2), "%s ", prefix); else - *l_prefix2 = 0; + *yaz_log_info.l_prefix2 = 0; } void yaz_log_init(int level, const char *prefix, const char *fname) { - init_mutex(); + internal_log_init(); yaz_log_init_level(level); yaz_log_init_prefix(prefix); if (fname && *fname) @@ -201,16 +280,17 @@ void yaz_log_init(int level, const char *prefix, const char *fname) void yaz_log_init_max_size(int mx) { - if (mx <0) - l_max_size = l_def_max_size; - else + if (mx > 0) l_max_size = mx; + else + l_max_size = 0; } -static void (*start_hook_func)(int, const char *, void *) = NULL; -static void *start_hook_info; -static void (*end_hook_func)(int, const char *, void *) = NULL; -static void *end_hook_info; +void yaz_log_set_handler(void (*func)(int, const char *, void *), void *info) +{ + hook_func = func; + hook_info = info; +} void log_event_start(void (*func)(int, const char *, void *), void *info) { @@ -224,43 +304,57 @@ void log_event_end(void (*func)(int, const char *, void *), void *info) end_hook_info = info; } -static void yaz_log_open_check(struct tm *tm, int force) +static void yaz_log_open_check(struct tm *tm, int force, const char *filemode) { char new_filename[512]; static char cur_filename[512] = ""; - if (!l_file) - l_file = stderr; + if (yaz_log_info.type != use_file) + return; - if (l_fname && *l_fname) + if (*yaz_log_info.l_fname) { - strftime(new_filename, sizeof(new_filename)-1, l_fname, tm); + strftime(new_filename, sizeof(new_filename)-1, yaz_log_info.l_fname, + tm); if (strcmp(new_filename, cur_filename)) { strcpy(cur_filename, new_filename); force = 1; } - if (l_max_size > 0 && (l_file && l_file != stderr)) + } + + if (l_max_size > 0 && yaz_log_info.log_file) + { + long flen = ftell(yaz_log_info.log_file); + if (flen > l_max_size) { - long flen = ftell(l_file); - if (flen > l_max_size) - { - rotate_log(cur_filename); - force = 1; - } + rotate_log(cur_filename); + force = 1; } - if (force) + } + if (force && *cur_filename) + { + FILE *new_file; +#ifdef WIN32 + yaz_log_close(); +#endif + new_file = fopen(cur_filename, filemode); + if (new_file) { - if (l_file && l_file != stderr) - fclose(l_file); - l_file = fopen(cur_filename, "a"); + yaz_log_close(); + yaz_log_info.log_file = new_file; if (l_level & YLOG_FLUSH) - setvbuf(l_file, 0, _IONBF, 0); + setvbuf(yaz_log_info.log_file, 0, _IONBF, 0); + } + else + { + /* disable log rotate */ + l_max_size = 0; } } } -void yaz_log_reopen() +static void yaz_log_do_reopen(const char *filemode) { time_t cur_time = time(0); #if HAVE_LOCALTIME_R @@ -269,105 +363,156 @@ void yaz_log_reopen() struct tm *tm; #endif - nmem_mutex_enter(log_mutex); + yaz_log_lock(); #if HAVE_LOCALTIME_R localtime_r(&cur_time, tm); #else tm = localtime(&cur_time); #endif - yaz_log_open_check(tm, 1); - nmem_mutex_leave(log_mutex); + yaz_log_open_check(tm, 1, filemode); + yaz_log_unlock(); } -void yaz_log(int level, const char *fmt, ...) + +void yaz_log_reopen() { - va_list ap; - char buf[4096], flags[1024]; - int i; - time_t ti; + yaz_log_do_reopen("a"); +} + +void yaz_log_trunc() +{ + yaz_log_do_reopen("w"); +} + +static void yaz_strftime(char *dst, size_t sz, + const char *fmt, const struct tm *tm) +{ + strftime(dst, sz, fmt, tm); +} + +static void yaz_log_to_file(int level, const char *log_message) +{ + FILE *file; + time_t ti = time(0); #if HAVE_LOCALTIME_R struct tm tm0, *tm = &tm0; #else struct tm *tm; #endif - char tbuf[TIMEFORMAT_LEN] = ""; - int o_level = level; - if (!(level & l_level)) - return; - init_mutex(); + internal_log_init(); - nmem_mutex_enter(log_mutex); - ti = time(0); + yaz_log_lock(); #if HAVE_LOCALTIME_R localtime_r(&ti, tm); #else tm = localtime(&ti); #endif - yaz_log_open_check(tm, 0); - - if (!l_file) - l_file = stderr; + yaz_log_open_check(tm, 0, "a"); + file = yaz_log_file(); /* file may change in yaz_log_open_check */ - *flags = '\0'; - for (i = 0; level && mask_names[i].name; i++) - if ( mask_names[i].mask & level) - { - if (*mask_names[i].name && mask_names[i].mask && - mask_names[i].mask != YLOG_ALL) + if (file) + { + char tbuf[TIMEFORMAT_LEN]; + char tid[TID_LEN]; + char flags[1024]; + int i; + + *flags = '\0'; + for (i = 0; level && mask_names[i].name; i++) + if ( mask_names[i].mask & level) { - sprintf(flags + strlen(flags), "[%s]", mask_names[i].name); - level &= ~mask_names[i].mask; + if (*mask_names[i].name && mask_names[i].mask && + mask_names[i].mask != YLOG_ALL) + { + if (strlen(flags) + strlen(mask_names[i].name) + < sizeof(flags) - 4) + { + strcat(flags, "["); + strcat(flags, mask_names[i].name); + strcat(flags, "]"); + } + level &= ~mask_names[i].mask; + } } + + tbuf[0] = '\0'; + if (!(l_level & YLOG_NOTIME)) + { + yaz_strftime(tbuf, TIMEFORMAT_LEN-2, l_actual_format, tm); + tbuf[TIMEFORMAT_LEN-2] = '\0'; + } + if (tbuf[0]) + strcat(tbuf, " "); + tid[0] = '\0'; + + if (l_level & YLOG_TID) + { + yaz_thread_id_cstr(tid, sizeof(tid)-1); + if (tid[0]) + strcat(tid, " "); } + fprintf(file, "%s%s%s%s %s%s\n", tbuf, yaz_log_info.l_prefix, + tid, flags, yaz_log_info.l_prefix2, + log_message); + if (l_level & YLOG_FLUSH) + fflush(file); + } + yaz_log_unlock(); +} + +void yaz_log(int level, const char *fmt, ...) +{ + va_list ap; + char buf[4096]; + FILE *file; + int o_level = level; + + internal_log_init(); + if (!(level & l_level)) + return; va_start(ap, fmt); -#ifdef WIN32 - _vsnprintf(buf, sizeof(buf)-1, fmt, ap); -#else -/* !WIN32 */ -#if HAVE_VSNPRINTF - vsnprintf(buf, sizeof(buf), fmt, ap); -#else - vsprintf(buf, fmt, ap); -#endif -#endif -/* WIN32 */ + + /* 30 is enough for our 'rest of output' message */ + yaz_vsnprintf(buf, sizeof(buf)-30, fmt, ap); + if (strlen(buf) >= sizeof(buf)-31) + strcat(buf, " [rest of output omitted]"); + if (o_level & YLOG_ERRNO) { - strcat(buf, " ["); - yaz_strerror(buf+strlen(buf), 2048); - strcat(buf, "]"); + size_t remain = sizeof(buf) - strlen(buf); + if (remain > 100) /* reasonable minimum space for error */ + { + strcat(buf, " ["); + yaz_strerror(buf+strlen(buf), remain-5); /* 5 due to extra [] */ + strcat(buf, "]"); + } } va_end (ap); if (start_hook_func) (*start_hook_func)(o_level, buf, start_hook_info); - if (l_level & YLOG_NOTIME) - tbuf[0] = '\0'; - else - strftime(tbuf, TIMEFORMAT_LEN-1, l_actual_format, tm); - tbuf[TIMEFORMAT_LEN-1] = '\0'; - fprintf(l_file, "%s %s%s %s%s\n", tbuf, l_prefix, flags, - l_prefix2, buf); - if (l_level & (YLOG_FLUSH|YLOG_DEBUG) ) - fflush(l_file); + if (hook_func) + (*hook_func)(o_level, buf, hook_info); + file = yaz_log_file(); + if (file) + yaz_log_to_file(level, buf); if (end_hook_func) (*end_hook_func)(o_level, buf, end_hook_info); - nmem_mutex_leave(log_mutex); } void yaz_log_time_format(const char *fmt) { - if ( !fmt || !*fmt) + if ( !fmt || !*fmt) { /* no format, default to new */ l_actual_format = l_new_default_format; - return; + return; } if (0==strcmp(fmt, "old")) { /* force the old format */ l_actual_format = l_old_default_format; - return; + return; } /* else use custom format */ strncpy(l_custom_format, fmt, TIMEFORMAT_LEN-1); @@ -376,12 +521,12 @@ void yaz_log_time_format(const char *fmt) } /** cleans a loglevel name from leading paths and suffixes */ -static char *clean_name(const char *name, int len, char *namebuf, int buflen) +static char *clean_name(const char *name, size_t len, char *namebuf, size_t buflen) { char *p = namebuf; char *start = namebuf; if (buflen <= len) - len = buflen-1; + len = buflen-1; strncpy(namebuf, name, len); namebuf[len] = '\0'; while ((p = strchr(start, '/'))) @@ -393,28 +538,24 @@ static char *clean_name(const char *name, int len, char *namebuf, int buflen) static int define_module_bit(const char *name) { - int i; - init_mutex(); - nmem_mutex_enter(log_mutex); + size_t i; + for (i = 0; mask_names[i].name; i++) if (0 == strcmp(mask_names[i].name, name)) { - nmem_mutex_leave(log_mutex); return mask_names[i].mask; } - if ( (i>=MAX_MASK_NAMES) || (next_log_bit >= 1<<31 )) + if ( (i>=MAX_MASK_NAMES) || (next_log_bit & (1U<<31) )) { - nmem_mutex_leave(log_mutex); yaz_log(YLOG_WARN, "No more log bits left, not logging '%s'", name); return 0; } - mask_names[i].mask = next_log_bit; + mask_names[i].mask = (int) next_log_bit; /* next_log_bit can hold int */ next_log_bit = next_log_bit<<1; - mask_names[i].name = malloc(strlen(name)+1); + mask_names[i].name = (char *) malloc(strlen(name)+1); strcpy(mask_names[i].name, name); mask_names[i+1].name = NULL; mask_names[i+1].mask = 0; - nmem_mutex_leave(log_mutex); return mask_names[i].mask; } @@ -423,33 +564,32 @@ int yaz_log_module_level(const char *name) int i; char clean[255]; char *n = clean_name(name, strlen(name), clean, sizeof(clean)); - init_mutex(); - - nmem_mutex_enter(log_mutex); + internal_log_init(); + for (i = 0; mask_names[i].name; i++) if (0==strcmp(n, mask_names[i].name)) { - nmem_mutex_leave(log_mutex); yaz_log(YLOG_LOGLVL, "returning log bit 0x%x for '%s' %s", - mask_names[i].mask, n, + mask_names[i].mask, n, strcmp(n,name) ? name : ""); return mask_names[i].mask; } - nmem_mutex_leave(log_mutex); - yaz_log(YLOG_LOGLVL, "returning NO log bit for '%s' %s", n, - strcmp(n, name) ? name : "" ); + yaz_log(YLOG_LOGLVL, "returning NO log bit for '%s' %s", n, + strcmp(n, name) ? name : "" ); return 0; } int yaz_log_mask_str(const char *str) { - return yaz_log_mask_str_x(str, YLOG_DEFAULT_LEVEL); + internal_log_init(); /* since l_level may be affected */ + return yaz_log_mask_str_x(str, l_level); } int yaz_log_mask_str_x(const char *str, int level) { const char *p; + internal_log_init(); while (*str) { int negated = 0; @@ -460,14 +600,14 @@ int yaz_log_mask_str_x(const char *str, int level) negated = 1; str++; } - if (isdigit(*(unsigned char *) str)) + if (yaz_isdigit(*str)) { level = atoi(str); } - else + else { char clean[509]; - char *n = clean_name(str, p-str, clean, sizeof(clean)); + char *n = clean_name(str, (size_t) (p - str), clean, sizeof(clean)); int mask = define_module_bit(n); if (!mask) level = 0; /* 'none' clears them all */ @@ -485,6 +625,7 @@ int yaz_log_mask_str_x(const char *str, int level) /* * Local variables: * c-basic-offset: 4 + * c-file-style: "Stroustrup" * indent-tabs-mode: nil * End: * vim: shiftwidth=4 tabstop=8 expandtab