include / plugins directory

.gitignore

@@ -1,5 +1,4 @@
 *.o
-*.so
 *.d
 sammler
 sammler.log

Makefile

@@ -1,17 +1,13 @@
 # Toplevel Makefile
+WITH_RRD=yes
 
-WITH_RRD = yes
+PLUGINS := ctstat load memory mount netdev random rtstat stat uptime vmstat
-
+PLUGINS += apache mysql
-WITH_MYSQL = yes
-
-WITH_CURL = yes
 
 # ############################
 
 SAMMLER_SRC := sammler.c configfile.c event.c helper.c logging.c network.c plugins.c probe.c
-PLUGIN_SRC := p_ctstat.c p_load.c p_memory.c p_mount.c p_netdev.c p_random.c
+CFLAGS := -O2 -Wall -fno-stack-protector -Iinclude
-PLUGIN_SRC += p_rtstat.c p_stat.c p_uptime.c p_vmstat.c
-CFLAGS := -O2 -Wall -fno-stack-protector
 LDFLAGS := -ldl -rdynamic
 
 # ############################
@@ -22,17 +18,10 @@ ifeq ("$(WITH_RRD)", "yes")
 	LDFLAGS += -lrrd
 endif
 
-ifeq ("$(WITH_MYSQL)", "yes")
-	PLUGIN_SRC += p_mysql.c
-endif
-
-ifeq ("$(WITH_CURL)", "yes")
-	PLUGIN_SRC += p_apache.c
-endif
-
 # ############################
 
-all: sammler $(PLUGIN_SRC:%.c=%.so)
+all: sammler
+	make -C plugins PLUGINS="$(PLUGINS)"
 
 sammler: $(SAMMLER_SRC:%.c=%.o)
 	$(CC) $(LDFLAGS) $^ -o $@
@@ -43,19 +32,8 @@ sammler: $(SAMMLER_SRC:%.c=%.o)
 %.o: %.c
 	$(CC) $(CFLAGS) -o $@ -c $<
 
-%_sh.o: %.c
-	$(CC) $(CFLAGS) -fPIC -o $@ -c $<
-
-p_apache.so: p_apache_sh.o
-	$(LD) -shared -lcurl -o $@ $^
-
-p_mysql.so: p_mysql_sh.o p_mysql_helper_sh.o
-	$(LD) -shared -lmysqlclient -o $@ $^
-
-%.so: %_sh.o
-	$(LD) -shared -o $@ $<
-
 clean:
-	rm -rf *.d *.o *.so sammler
+	rm -rf *.d *.o sammler
+	make -C plugins clean
 
--include $(SAMMLER_SRC:.c=.d) $(PLUGIN_SRC:.c=.d)
+-include $(SAMMLER_SRC:%.c=%.d)

include/probe.h

@@ -0,0 +1,9 @@
+#ifndef _PROBE_H_
+#define _PROBE_H_
+
+#include "plugins.h"
+
+int probe_init(void);
+int probe_submit(struct sammler_plugin *plugin, const char *filename, int ds_id, const char *fmt, ... );
+
+#endif /* _PROBE_H_ */

plugins/.gitignore

@@ -0,0 +1,3 @@
+*.o
+*.so
+*.d

plugins/Makefile

@@ -0,0 +1,26 @@
+CFLAGS := -O2 -Wall -fno-stack-protector -I../include
+LDFLAGS := -ldl -rdynamic
+
+# ############################
+
+all: $(PLUGINS:%=%.so)
+
+%.d: %.c
+	$(CC) $(CFLAGS) -MM -c $< -o $@
+
+%.o: %.c
+	$(CC) $(CFLAGS) -fPIC -o $@ -c $<
+
+apache.so: apache.o
+	$(LD) -shared -lcurl -o $@ $^
+
+mysql.so: mysql.o mysql_helper.o
+	$(LD) -shared -lmysqlclient -o $@ $^
+
+%.so: %.o
+	$(LD) -shared -o $@ $<
+
+clean:
+	rm -rf *.d *.o *.so
+
+-include $(PLUGINS:%=%.d)

plugins/mysql.c

@@ -27,7 +27,7 @@
 #include "plugins.h"
 #include "probe.h"
 
-#include "p_mysql_helper.h"
+#include "mysql_helper.h"
 
 #define DS_TRAFFIC	1
 #define DS_COMMANDS	2

plugins/mysql_helper.c

@@ -5,7 +5,7 @@
 #include <mysql/mysql.h>
 
 #include "logging.h"
-#include "p_mysql_helper.h"
+#include "mysql_helper.h"
 
 void * init_connection(const char *host, const char *user, const char *pass)
 {

plugins/mysql_helper.h

@@ -1,5 +1,5 @@
-#ifndef _P_MYSQL_HELPER_H_
+#ifndef _MYSQL_HELPER_H_
-#define _P_MYSQL_HELPER_H_
+#define _MYSQL_HELPER_H_
 
 #include <stdint.h>
 
@@ -32,4 +32,4 @@ int close_connection(void *mysql);
 
 int get_stats(void *mysql, struct mysql_stats *stats);
 
-#endif /* _P_MYSQL_HELPER_H_ */
+#endif /* _MYSQL_HELPER_H_ */

probe.c

@@ -0,0 +1,56 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdarg.h>
+
+#include "configfile.h"
+#include "logging.h"
+#include "network.h"
+#include "rrdtool.h"
+
+#define BUFSIZE 512
+
+#define SUBMIT_NET_ONLY	0x01
+
+static int submit_flags;
+
+int probe_init(void)
+{
+	const char *fwd_only = config_get_string("global", "forward_only", "false");
+	if (fwd_only == NULL || strncmp(fwd_only, "true", 4))
+		submit_flags |= SUBMIT_NET_ONLY;
+
+	return 0;
+}
+
+int probe_submit(struct sammler_plugin *plugin, const char *filename, int ds_id, const char *fmt, ... )
+{
+	static const char *hostname = NULL;
+	if (hostname == NULL)
+		hostname = config_get_string("global", "hostname", "localhost");
+
+	char *buffer = malloc(BUFSIZE);
+	if (buffer == NULL) {
+		log_print(LOG_ERROR, "probe_submit: out of memory");
+		return -1;
+	}
+
+	va_list az;
+	va_start(az, fmt);
+	int len = vsnprintf(buffer, BUFSIZE, fmt, az);
+	va_end(az);
+
+	if (len < 0 || len >= BUFSIZE) {
+		log_print(LOG_ERROR, "probe_submit: %s arguments too long", plugin->name);
+		free(buffer);
+		return -1;
+	}
+
+	net_submit(hostname, plugin->name, filename, ds_id, buffer);
+
+	if (!(submit_flags & SUBMIT_NET_ONLY))
+		rrd_submit(hostname, plugin->name, filename, ds_id, buffer);
+
+	free(buffer);
+	return 0;
+}

sammler.conf

@@ -9,19 +9,19 @@ logfile sammler.log
 
 rrd_dir rrd
 
-plugin_dir .
+plugin_dir plugins
-plugin p_stat.so
+plugin stat.so
-plugin p_load.so
+plugin load.so
-plugin p_memory.so
+plugin memory.so
-plugin p_vmstat.so
+plugin vmstat.so
-plugin p_uptime.so
+plugin uptime.so
-plugin p_netdev.so
+plugin netdev.so
-plugin p_mount.so
+plugin mount.so
-plugin p_ctstat.so
+plugin ctstat.so
-plugin p_rtstat.so
+plugin rtstat.so
-plugin p_random.so
+plugin random.so
-plugin p_mysql.so
+plugin mysql.so
-plugin p_apache.so
+plugin apache.so
 
 # 1h(10s), 12h(1min), 48h(2min), 14d(15min), 4w(60min), 2y(12h)
 rra RRA:MIN:0.1:1:360     RRA:AVERAGE:0.1:1:360     RRA:MAX:0.1:1:360