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daemon: dump logs on crash.

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Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell
2016-01-22 06:41:47 +10:30
parent 117cf6b02d
commit 89f1f1548e
3 changed files with 112 additions and 59 deletions
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61
daemon/lightningd.c
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@@ -1,6 +1,5 @@
#include "lightningd.h"
#include "log.h"
#include <ccan/array_size/array_size.h>
#include <ccan/err/err.h>
#include <ccan/opt/opt.h>
#include <ccan/tal/str/str.h>
@@ -22,58 +21,6 @@ static struct lightningd_state *lightningd_state(void)
return state;
}
static struct {
const char *name;
enum log_level level;
} log_levels[] = {
{ "IO", LOG_IO },
{ "DEBUG", LOG_DBG },
{ "INFO", LOG_INFORM },
{ "UNUSUAL", LOG_UNUSUAL },
{ "BROKEN", LOG_BROKEN }
};
static char *arg_log_level(const char *arg, struct lightningd_state *state)
{
size_t i;
for (i = 0; i < ARRAY_SIZE(log_levels); i++) {
if (strcasecmp(arg, log_levels[i].name) == 0) {
set_log_level(state->log_record, log_levels[i].level);
return NULL;
}
}
return tal_fmt(NULL, "unknown log level");
}
static char *arg_log_prefix(const char *arg, struct lightningd_state *state)
{
set_log_prefix(state->base_log, arg);
return NULL;
}
static void log_to_file(const char *prefix,
enum log_level level,
bool continued,
const char *str,
struct lightningd_state *state)
{
if (!continued) {
fprintf(state->logf, "%s %s\n", prefix, str);
} else {
fprintf(state->logf, "%s \t%s\n", prefix, str);
}
}
static char *arg_log_to_file(const char *arg, struct lightningd_state *state)
{
state->logf = fopen(arg, "a");
if (!state->logf)
return tal_fmt(NULL, "Failed to open: %s", strerror(errno));
set_log_outfn(state->log_record, log_to_file, state);
return NULL;
}
/* Tal wrappers for opt. */
static void *opt_allocfn(size_t size)
{
@@ -104,18 +51,14 @@ int main(int argc, char *argv[])
"\n"
"A bitcoin lightning daemon.",
"Print this message.");
opt_register_arg("--log-level", arg_log_level, NULL, state,
"log level (debug, info, unusual, broken)");
opt_register_arg("--log-prefix", arg_log_prefix, NULL, state,
"log prefix");
opt_register_arg("--log-file=<file>", arg_log_to_file, NULL, state,
"log to file instead of stdout");
opt_register_logging(state->base_log);
opt_register_version();
opt_parse(&argc, argv, opt_log_stderr_exit);
if (argc != 1)
errx(1, "no arguments accepted");
crashlog_activate(state->base_log);
log_info(state->base_log, "Hello world!");
tal_free(state);
opt_free_table();