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#ifndef LIGHTNING_LIGHTNINGD_LOG_H
#define LIGHTNING_LIGHTNINGD_LOG_H
#include "config.h"
#include <ccan/tal/tal.h>
#include <ccan/time/time.h>
#include <ccan/typesafe_cb/typesafe_cb.h>
#include <common/type_to_string.h>
#include <stdarg.h>
struct lightningd;
struct timerel;
struct lightningd;
enum log_level {
/* Logging all IO. */
LOG_IO,
/* Gory details which are mainly good for debugging. */
LOG_DBG,
/* Information about what's going in. */
LOG_INFORM,
/* That's strange... */
LOG_UNUSUAL,
/* That's really bad, we're broken. */
LOG_BROKEN
};
/* We can have a single log book, with multiple logs in it. */
struct log_book *new_log_book(const tal_t *ctx,
size_t max_mem,
enum log_level printlevel);
/* With different entry points */
struct log *new_log(const tal_t *ctx, struct log_book *record, const char *fmt, ...) PRINTF_FMT(3,4);
#define log_debug(log, ...) log_((log), LOG_DBG, __VA_ARGS__)
#define log_info(log, ...) log_((log), LOG_INFORM, __VA_ARGS__)
#define log_unusual(log, ...) log_((log), LOG_UNUSUAL, __VA_ARGS__)
#define log_broken(log, ...) log_((log), LOG_BROKEN, __VA_ARGS__)
void log_io(struct log *log, bool in, const void *data, size_t len);
void log_(struct log *log, enum log_level level, const char *fmt, ...)
PRINTF_FMT(3,4);
void log_add(struct log *log, const char *fmt, ...) PRINTF_FMT(2,3);
void logv(struct log *log, enum log_level level, const char *fmt, va_list ap);
void logv_add(struct log *log, const char *fmt, va_list ap);
enum log_level get_log_level(struct log_book *lr);
void set_log_level(struct log_book *lr, enum log_level level);
void set_log_prefix(struct log *log, const char *prefix);
const char *log_prefix(const struct log *log);
#define set_log_outfn(lr, print, arg) \
set_log_outfn_((lr), \
typesafe_cb_preargs(void, void *, (print), (arg),\
const char *, \
enum log_level, \
bool, \
const struct timeabs *, \
const char *), (arg))
void set_log_outfn_(struct log_book *lr,
void (*print)(const char *prefix,
enum log_level level,
bool continued,
const struct timeabs *time,
const char *str, void *arg),
void *arg);
size_t log_max_mem(const struct log_book *lr);
size_t log_used(const struct log_book *lr);
const struct timeabs *log_init_time(const struct log_book *lr);
#define log_each_line(lr, func, arg) \
log_each_line_((lr), \
typesafe_cb_preargs(void, void *, (func), (arg), \
unsigned int, \
struct timerel, \
enum log_level, \
const char *, \
const char *), (arg))
void log_each_line_(const struct log_book *lr,
void (*func)(unsigned int skipped,
struct timerel time,
enum log_level level,
const char *prefix,
const char *log,
void *arg),
void *arg);
void log_dump_to_file(int fd, const struct log_book *lr);
void opt_register_logging(struct lightningd *ld);
void crashlog_activate(const char *argv0, struct log *log);
char *arg_log_to_file(const char *arg, struct lightningd *ld);
/* Convenience parent for temporary allocations (eg. type_to_string)
* during log calls; freed after every log_*() */
const tal_t *ltmp;
/* Before the crashlog is activated, just prints to stderr. */
void NORETURN PRINTF_FMT(1,2) fatal(const char *fmt, ...);
#endif /* LIGHTNING_LIGHTNINGD_LOG_H */