X-Git-Url: http://git.indexdata.com/?a=blobdiff_plain;f=src%2Flog.c;h=d834bac3e2e912cf914a6326edd7e035f8a10502;hb=964580242e2e0b2e570f652afa58bfb90ad0bb5e;hp=e9fcea4e0eb629051b7face7a0b36ed7949d2e0a;hpb=41b946725f2c8d8617b3e4ece161cb9d99bfaa5c;p=yaz-moved-to-github.git

diff --git a/src/log.c b/src/log.c
index e9fcea4..d834bac 100644
--- a/src/log.c
+++ b/src/log.c
@@ -1,13 +1,13 @@
 /*
- * Copyright (C) 1995-2005, Index Data ApS
+ * Copyright (C) 1995-2006, Index Data ApS
  * See the file LICENSE for details.
  *
- * $Id: log.c,v 1.32 2006-03-21 12:54:02 adam Exp $
+ * $Id: log.c,v 1.42 2006-10-09 11:21:37 adam Exp $
  */
 
 /**
  * \file log.c
- * \brief Implements logging utility
+ * \brief Logging utility
  */
 
 #if HAVE_CONFIG_H
@@ -26,6 +26,7 @@
 #include <pth.h>
 #endif
 
+#include <sys/stat.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <ctype.h>
@@ -38,7 +39,6 @@
 #include <yaz/xmalloc.h>
 
 static NMEM_MUTEX log_mutex = 0;
-static int mutex_init_flag = 0; /* not yet initialized */
 
 #define HAS_STRERROR 1
 
@@ -55,21 +55,21 @@ char *strerror(int n)
 #endif
 
 
-static int default_log_level() {
-    char *env = getenv("YAZ_LOG");
-    if (env != 0)
-        return yaz_log_mask_str_x(env, YLOG_DEFAULT_LEVEL);
-    else
-        return YLOG_DEFAULT_LEVEL;
-}
-
-
-static int l_level = -1;        /* will be set from default_log_level() */
+static int l_level = YLOG_DEFAULT_LEVEL;
 
 enum l_file_type {  use_stderr, use_none, use_file };
 static enum l_file_type yaz_file_type = use_stderr;
 static FILE *yaz_global_log_file = NULL;
 
+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;
+
+static void (*hook_func)(int, const char *, void *) = NULL;
+static void *hook_info;
+
 static char l_prefix[512] = "";
 static char l_prefix2[512] = "";
 static char l_fname[512] = "";
@@ -81,8 +81,10 @@ static char l_new_default_format[] = "%Y%m%d-%H%M%S";
 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;
+/** l_max_size tells when to rotate the log. Default is 1 GB 
+    This is almost the same as never, but it saves applications in the
+    case of 2 or 4 GB file size limits..
+ */
 static int l_max_size = 1024*1024*1024;
 
 #define MAX_MASK_NAMES 35   /* 32 bits plus a few combo names */
@@ -111,14 +113,23 @@ static struct {
 
 static unsigned int next_log_bit = YLOG_LAST_BIT<<1; /* first dynamic bit */
 
-static void init_mutex()
+static void internal_log_init(void)
 {
+    static int mutex_init_flag = 0; /* not yet initialized */
+    char *env;
+
     if (mutex_init_flag)
         return;
+    mutex_init_flag = 1; /* here, 'cause nmem_mutex_create may call yaz_log */
+
     nmem_mutex_create(&log_mutex);
-    mutex_init_flag = 1;
+
+    env = getenv("YAZ_LOG");
+    if (env)
+        l_level = yaz_log_mask_str_x(env, l_level);
 }
 
+
 FILE *yaz_log_file(void)
 {
     FILE *f = 0;
@@ -131,7 +142,7 @@ FILE *yaz_log_file(void)
     return f;
 }
 
-void yaz_log_close()
+void yaz_log_close(void)
 {
     if (yaz_file_type == use_file && yaz_global_log_file)
     {
@@ -142,7 +153,7 @@ void yaz_log_close()
 
 void yaz_log_init_file(const char *fname)
 {
-    init_mutex();
+    internal_log_init();
 
     yaz_log_close();
     if (fname)
@@ -164,30 +175,50 @@ void yaz_log_init_file(const char *fname)
 
 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);
+    fclose(yaz_global_log_file);
+    yaz_global_log_file = 0;
+#endif
+    for (i = 0; i<9; i++)
+    {
+        char fname_str[FILENAME_MAX];
+        struct stat stat_buf;
+
+        sprintf(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)
+            sprintf(fname_str[0], "%s.%d", cur_fname, i-1);
+        else
+            sprintf(fname_str[0], "%s", cur_fname);
+        sprintf(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();
-    if (l_level < 0) l_level = default_log_level();
+    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 ";
@@ -232,7 +263,7 @@ void yaz_log_init_prefix2(const char *prefix)
 
 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)
@@ -241,22 +272,31 @@ 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 (*hook_func)(int, const char *, void *) = NULL;
-static void *hook_info;
-
 void yaz_log_set_handler(void (*func)(int, const char *, void *), void *info)
 {
     hook_func = func;
     hook_info = info;
 }
 
-static void yaz_log_open_check(struct tm *tm, int force)
+void log_event_start(void (*func)(int, const char *, void *), void *info)
+{
+     start_hook_func = func;
+     start_hook_info = info;
+}
+
+void log_event_end(void (*func)(int, const char *, void *), void *info)
+{
+     end_hook_func = func;
+     end_hook_info = info;
+}
+
+static void yaz_log_open_check(struct tm *tm, int force, const char *filemode)
 {
     char new_filename[512];
     static char cur_filename[512] = "";
@@ -283,14 +323,13 @@ static void yaz_log_open_check(struct tm *tm, int force)
     if (force && yaz_file_type == use_file && *cur_filename)
     {
         yaz_log_close();
-        yaz_global_log_file = fopen(cur_filename, "a");
-        if (l_level < 0) l_level = default_log_level();
+        yaz_global_log_file = fopen(cur_filename, filemode);
         if (l_level & YLOG_FLUSH)
             setvbuf(yaz_global_log_file, 0, _IONBF, 0);
     }
 }
 
-void yaz_log_reopen()
+static void yaz_log_do_reopen(const char *filemode)
 {
     time_t cur_time = time(0);
 #if HAVE_LOCALTIME_R
@@ -305,37 +344,78 @@ void yaz_log_reopen()
 #else
     tm = localtime(&cur_time);
 #endif
-    yaz_log_open_check(tm, 1);
+    yaz_log_open_check(tm, 1, filemode);
     nmem_mutex_leave(log_mutex);
 }
 
-static void yaz_log_to_file(int level, FILE *file, const char *buf)
+
+void yaz_log_reopen()
 {
+    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)
+{
+    const char *cp = strstr(fmt, "%!");
+    if (cp && strlen(fmt) < 60)
+    {
+        char fmt2[80];
+        char tpidstr[20];
+#ifdef WIN32
+        DWORD tid = GetCurrentThreadId();
+#else
+        long tid = 0;
+#if YAZ_POSIX_THREADS
+        tid = pthread_self();
+#endif
+#endif
+        memcpy(fmt2, fmt, cp-fmt);
+        fmt2[cp-fmt] = '\0';
+        sprintf(tpidstr, "%08lx", (long) tid);
+        strcat(fmt2, tpidstr);
+        strcat(fmt2, cp+2);
+        strftime(dst, sz, fmt2, tm);     
+    }
+    else
+        strftime(dst, sz, fmt, tm);
+}
+                            
+static void yaz_log_to_file(int level, const char *log_message)
+{
+    FILE *file;
     time_t ti = time(0);
-    int i;
 #if HAVE_LOCALTIME_R
     struct tm tm0, *tm = &tm0;
 #else
     struct tm *tm;
 #endif
 
-    init_mutex();
+    internal_log_init();
 
     nmem_mutex_enter(log_mutex);
-
-    #if HAVE_LOCALTIME_R
+    
+#if HAVE_LOCALTIME_R
     localtime_r(&ti, tm);
 #else
     tm = localtime(&ti);
 #endif
     
-    yaz_log_open_check(tm, 0);  
+    yaz_log_open_check(tm, 0, "a");  
     file = yaz_log_file(); /* file may change in yaz_log_open_check */
 
     if (file)
     {
         char tbuf[TIMEFORMAT_LEN];
         char flags[1024];
+        int i;
         
         *flags = '\0';
         for (i = 0; level && mask_names[i].name; i++)
@@ -352,11 +432,12 @@ static void yaz_log_to_file(int level, FILE *file, const char *buf)
         if (l_level & YLOG_NOTIME)
             tbuf[0] = '\0';
         else
-            strftime(tbuf, TIMEFORMAT_LEN-1, l_actual_format, tm);
+            yaz_strftime(tbuf, TIMEFORMAT_LEN-1, l_actual_format, tm);
         tbuf[TIMEFORMAT_LEN-1] = '\0';
         
-        fprintf(file, "%s %s%s %s%s\n", tbuf, l_prefix, flags, l_prefix2, buf);
-        if (l_level & (YLOG_FLUSH|YLOG_DEBUG) )
+        fprintf(file, "%s %s%s %s%s\n", tbuf, l_prefix, flags, l_prefix2,
+                log_message);
+        if (l_level & YLOG_FLUSH)
             fflush(file);
     }
     nmem_mutex_leave(log_mutex);
@@ -369,8 +450,7 @@ void yaz_log(int level, const char *fmt, ...)
     FILE *file;
     int o_level = level;
 
-    if (l_level < 0)
-        l_level = default_log_level();
+    internal_log_init();
     if (!(level & l_level))
         return;
     va_start(ap, fmt);
@@ -392,12 +472,15 @@ void yaz_log(int level, const char *fmt, ...)
         strcat(buf, "]");
     }
     va_end (ap);
+    if (start_hook_func)
+        (*start_hook_func)(o_level, buf, start_hook_info);
     if (hook_func)
         (*hook_func)(o_level, buf, hook_info);
-
     file = yaz_log_file();
     if (file)
-        yaz_log_to_file(level, file, buf);
+        yaz_log_to_file(level, buf);
+    if (end_hook_func)
+        (*end_hook_func)(o_level, buf, end_hook_info);
 }
 
 void yaz_log_time_format(const char *fmt)
@@ -437,7 +520,7 @@ 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);
     for (i = 0; mask_names[i].name; i++)
         if (0 == strcmp(mask_names[i].name, name))
@@ -466,7 +549,7 @@ 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();
+    internal_log_init();
     
     nmem_mutex_enter(log_mutex);
     for (i = 0; mask_names[i].name; i++)
@@ -480,19 +563,21 @@ int yaz_log_module_level(const char *name)
         }
     nmem_mutex_leave(log_mutex);
     yaz_log(YLOG_LOGLVL, "returning NO log bit for '%s' %s", n, 
-                    strcmp(n, name) ? name : "" );
+            strcmp(n, name) ? name : "" );
     return 0;
 }
 
 int yaz_log_mask_str(const char *str)
 {
-    return yaz_log_mask_str_x(str, default_log_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;