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// +build go1.5,cgo
package plugin // import "collectd.org/plugin"
// #cgo CPPFLAGS: -DHAVE_CONFIG_H
// #cgo LDFLAGS: -ldl
// #include <stdlib.h>
// #include <dlfcn.h>
// #include "plugin.h"
//
// static void (*plugin_log_) (int, char const *, ...) = NULL;
// void wrap_plugin_log(int severity, char *msg) {
// if (plugin_log_ == NULL) {
// void *hnd = dlopen(NULL, RTLD_LAZY);
// plugin_log_ = dlsym(hnd, "plugin_log");
// dlclose(hnd);
// }
// (*plugin_log_) (severity, "%s", msg);
// }
import "C"
import (
"fmt"
"unsafe"
)
type severity int
const (
logErr severity = 3
logWarning severity = 4
logNotice severity = 5
logInfo severity = 6
logDebug severity = 7
)
func log(s severity, msg string) error {
ptr := C.CString(msg)
defer C.free(unsafe.Pointer(ptr))
_, err := C.wrap_plugin_log(C.int(s), ptr)
return err
}
// Error logs an error using plugin_log(). Arguments are handled in the manner
// of fmt.Print.
func Error(v ...interface{}) error {
return log(logErr, fmt.Sprint(v...))
}
// Errorf logs an error using plugin_log(). Arguments are handled in the manner
// of fmt.Printf.
func Errorf(format string, v ...interface{}) error {
return Error(fmt.Sprintf(format, v...))
}
// Warning logs a warning using plugin_log(). Arguments are handled in the
// manner of fmt.Print.
func Warning(v ...interface{}) error {
return log(logWarning, fmt.Sprint(v...))
}
// Warningf logs a warning using plugin_log(). Arguments are handled in the
// manner of fmt.Printf.
func Warningf(format string, v ...interface{}) error {
return Warning(fmt.Sprintf(format, v...))
}
// Notice logs a notice using plugin_log(). Arguments are handled in the manner
// of fmt.Print.
func Notice(v ...interface{}) error {
return log(logNotice, fmt.Sprint(v...))
}
// Noticef logs a notice using plugin_log(). Arguments are handled in the
// manner of fmt.Printf.
func Noticef(format string, v ...interface{}) error {
return Notice(fmt.Sprintf(format, v...))
}
// Info logs a purely informal message using plugin_log(). Arguments are
// handled in the manner of fmt.Print.
func Info(v ...interface{}) error {
return log(logInfo, fmt.Sprint(v...))
}
// Infof logs a purely informal message using plugin_log(). Arguments are
// handled in the manner of fmt.Printf.
func Infof(format string, v ...interface{}) error {
return Info(fmt.Sprintf(format, v...))
}
// Debug logs a debugging message using plugin_log(). Arguments are handled in
// the manner of fmt.Print.
func Debug(v ...interface{}) error {
return log(logDebug, fmt.Sprint(v...))
}
// Debugf logs a debugging message using plugin_log(). Arguments are handled in
// the manner of fmt.Printf.
func Debugf(format string, v ...interface{}) error {
return Debug(fmt.Sprintf(format, v...))
}
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