![[tokkee]](http://tokkee.org/images/avatar.png){kind=avatar}
diff --git a/src/logfile.c b/src/logfile.c
--- /dev/null
+++ b/src/logfile.c
@@ -0,0 +1,235 @@
+/**
+ * collectd - src/logfile.c
+ * Copyright (C) 2007 Sebastian Harl
+ * Copyright (C) 2007,2008 Florian Forster
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Authors:
+ * Sebastian Harl <sh at tokkee.org>
+ * Florian Forster <octo at collectd.org>
+ **/
+
+#include "collectd.h"
+#include "common.h"
+#include "plugin.h"
+
+#include <pthread.h>
+
+#define DEFAULT_LOGFILE LOCALSTATEDIR"/log/collectd.log"
+
+#if COLLECT_DEBUG
+static int log_level = LOG_DEBUG;
+#else
+static int log_level = LOG_INFO;
+#endif /* COLLECT_DEBUG */
+
+static pthread_mutex_t file_lock = PTHREAD_MUTEX_INITIALIZER;
+
+static char *log_file = NULL;
+static int print_timestamp = 1;
+static int print_severity = 0;
+
+static const char *config_keys[] =
+{
+ "LogLevel",
+ "File",
+ "Timestamp",
+ "PrintSeverity"
+};
+static int config_keys_num = STATIC_ARRAY_SIZE (config_keys);
+
+static int logfile_config (const char *key, const char *value)
+{
+ if (0 == strcasecmp (key, "LogLevel")) {
+ log_level = parse_log_severity(value);
+ if (log_level < 0) {
+ log_level = LOG_INFO;
+ ERROR ("logfile: invalid loglevel [%s] defaulting to 'info'", value);
+ return (1);
+ }
+ }
+ else if (0 == strcasecmp (key, "File")) {
+ sfree (log_file);
+ log_file = strdup (value);
+ }
+ else if (0 == strcasecmp (key, "Timestamp")) {
+ if (IS_FALSE (value))
+ print_timestamp = 0;
+ else
+ print_timestamp = 1;
+ } else if (0 == strcasecmp(key, "PrintSeverity")) {
+ if (IS_FALSE (value))
+ print_severity = 0;
+ else
+ print_severity = 1;
+ }
+ else {
+ return -1;
+ }
+ return 0;
+} /* int logfile_config (const char *, const char *) */
+
+static void logfile_print (const char *msg, int severity,
+ cdtime_t timestamp_time)
+{
+ FILE *fh;
+ _Bool do_close = 0;
+ struct tm timestamp_tm;
+ char timestamp_str[64];
+ char level_str[16] = "";
+
+ if (print_severity)
+ {
+ switch (severity)
+ {
+ case LOG_ERR:
+ snprintf(level_str, sizeof (level_str), "[error] ");
+ break;
+ case LOG_WARNING:
+ snprintf(level_str, sizeof (level_str), "[warning] ");
+ break;
+ case LOG_NOTICE:
+ snprintf(level_str, sizeof (level_str), "[notice] ");
+ break;
+ case LOG_INFO:
+ snprintf(level_str, sizeof (level_str), "[info] ");
+ break;
+ case LOG_DEBUG:
+ snprintf(level_str, sizeof (level_str), "[debug] ");
+ break;
+ default:
+ break;
+ }
+ }
+
+ if (print_timestamp)
+ {
+ time_t tt = CDTIME_T_TO_TIME_T (timestamp_time);
+ localtime_r (&tt, ×tamp_tm);
+
+ strftime (timestamp_str, sizeof (timestamp_str), "%Y-%m-%d %H:%M:%S",
+ ×tamp_tm);
+ timestamp_str[sizeof (timestamp_str) - 1] = '\0';
+ }
+
+ pthread_mutex_lock (&file_lock);
+
+ if (log_file == NULL)
+ {
+ fh = fopen (DEFAULT_LOGFILE, "a");
+ do_close = 1;
+ }
+ else if (strcasecmp (log_file, "stderr") == 0)
+ fh = stderr;
+ else if (strcasecmp (log_file, "stdout") == 0)
+ fh = stdout;
+ else
+ {
+ fh = fopen (log_file, "a");
+ do_close = 1;
+ }
+
+ if (fh == NULL)
+ {
+ char errbuf[1024];
+ fprintf (stderr, "logfile plugin: fopen (%s) failed: %s\n",
+ (log_file == NULL) ? DEFAULT_LOGFILE : log_file,
+ sstrerror (errno, errbuf, sizeof (errbuf)));
+ }
+ else
+ {
+ if (print_timestamp)
+ fprintf (fh, "[%s] %s%s\n", timestamp_str, level_str, msg);
+ else
+ fprintf (fh, "%s%s\n", level_str, msg);
+
+ if (do_close) {
+ fclose (fh);
+ } else {
+ fflush(fh);
+ }
+ }
+
+ pthread_mutex_unlock (&file_lock);
+
+ return;
+} /* void logfile_print */
+
+static void logfile_log (int severity, const char *msg,
+ user_data_t __attribute__((unused)) *user_data)
+{
+ if (severity > log_level)
+ return;
+
+ logfile_print (msg, severity, cdtime ());
+} /* void logfile_log (int, const char *) */
+
+static int logfile_notification (const notification_t *n,
+ user_data_t __attribute__((unused)) *user_data)
+{
+ char buf[1024] = "";
+ char *buf_ptr = buf;
+ int buf_len = sizeof (buf);
+ int status;
+
+ status = ssnprintf (buf_ptr, buf_len, "Notification: severity = %s",
+ (n->severity == NOTIF_FAILURE) ? "FAILURE"
+ : ((n->severity == NOTIF_WARNING) ? "WARNING"
+ : ((n->severity == NOTIF_OKAY) ? "OKAY" : "UNKNOWN")));
+ if (status > 0)
+ {
+ buf_ptr += status;
+ buf_len -= status;
+ }
+
+#define APPEND(bufptr, buflen, key, value) \
+ if ((buflen > 0) && (strlen (value) > 0)) { \
+ int status = ssnprintf (bufptr, buflen, ", %s = %s", key, value); \
+ if (status > 0) { \
+ bufptr += status; \
+ buflen -= status; \
+ } \
+ }
+ APPEND (buf_ptr, buf_len, "host", n->host);
+ APPEND (buf_ptr, buf_len, "plugin", n->plugin);
+ APPEND (buf_ptr, buf_len, "plugin_instance", n->plugin_instance);
+ APPEND (buf_ptr, buf_len, "type", n->type);
+ APPEND (buf_ptr, buf_len, "type_instance", n->type_instance);
+ APPEND (buf_ptr, buf_len, "message", n->message);
+
+ buf[sizeof (buf) - 1] = '\0';
+
+ logfile_print (buf, LOG_INFO,
+ (n->time != 0) ? n->time : cdtime ());
+
+ return (0);
+} /* int logfile_notification */
+
+void module_register (void)
+{
+ plugin_register_config ("logfile", logfile_config,
+ config_keys, config_keys_num);
+ plugin_register_log ("logfile", logfile_log, /* user_data = */ NULL);
+ plugin_register_notification ("logfile", logfile_notification,
+ /* user_data = */ NULL);
+} /* void module_register (void) */
+
+/* vim: set sw=4 ts=4 tw=78 noexpandtab : */
+