lightningd: make --commit-time in milliseconds.

It was the only place we used opt_time, so cuts out much code.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

doc/lightningd-config.5

@@ -196,7 +196,7 @@ This is the proportional fee to charge for every payment which passes through\&.
 Allow nodes which establish channels to us to set any fee they want\&. This may result in a channel which cannot be closed, should fees increase, but make channels far more reliable since we never close it due to unreasonable fees\&.
 .RE
 .PP
-\fBcommit\-time\fR=\fITIME\fR
+\fBcommit\-time\fR=\*(AqMILLISECONDS
 .RS 4
 How long to wait before sending commitment messages to the peer: in theory increasing this would reduce load, but your node would have to be extremely busy node for you to even notice\&.
 .RE

doc/lightningd-config.5.txt

@@ -143,7 +143,7 @@ Lightning node customization options:
     fees increase, but make channels far more reliable since we never
     close it due to unreasonable fees.
 
-*commit-time*='TIME'::
+*commit-time*='MILLISECONDS::
     How long to wait before sending commitment messages to the peer: in
     theory increasing this would reduce load, but your node would have to be
     extremely busy node for you to even notice.

lightningd/Makefile

@@ -69,7 +69,6 @@ LIGHTNINGD_SRC :=				\
 	lightningd/log_status.c			\
 	lightningd/onchain_control.c		\
 	lightningd/opening_control.c		\
-	lightningd/opt_time.c			\
 	lightningd/options.c			\
 	lightningd/pay.c			\
 	lightningd/payalgo.c			\

lightningd/channel_control.c

@@ -268,7 +268,7 @@ bool peer_start_channeld(struct channel *channel,
 				      &channel->seed,
 				      &ld->id,
 				      &channel->peer->id,
-				      time_to_msec(cfg->commit_time),
+				      cfg->commit_time_ms,
 				      cfg->cltv_expiry_delta,
 				      channel->last_was_revoke,
 				      channel->last_sent_commit,

lightningd/lightningd.h

@@ -43,7 +43,7 @@ struct config {
 	s32 fee_per_satoshi;
 
 	/* How long between changing commit and sending COMMIT message. */
-	struct timerel commit_time;
+	u32 commit_time_ms;
 
 	/* How often to broadcast gossip (msec) */
 	u32 broadcast_interval;

lightningd/opt_time.c

@@ -1,82 +0,0 @@
-#include "opt_time.h"
-#include <assert.h>
-#include <ccan/str/str.h>
-#include <ccan/tal/str/str.h>
-#include <errno.h>
-#include <inttypes.h>
-#include <stdio.h>
-
-static bool match(const char *str, const char *abbrev, const char *full)
-{
-	if (streq(str, abbrev))
-		return true;
-
-	if (streq(str, full))
-		return true;
-
-	/* Allow "seconds" */
-	if (memcmp(str, full, strlen(full)) == 0
-	    && streq(str + strlen(full), "s"))
-		return true;
-
-	return false;
-}
-
-char *opt_set_time(const char *arg, struct timerel *t)
-{
-	char *endp;
-	unsigned long int l;
-
-	assert(arg != NULL);
-
-	/* This is how the manpage says to do it.  Yech. */
-	errno = 0;
-	l = strtol(arg, &endp, 0);
-	if (endp == arg)
-		return tal_fmt(NULL, "'%s' is not a number", arg);
-	if (errno)
-		return tal_fmt(NULL, "'%s' is out of range", arg);
-
-	while (isspace(*endp))
-		endp++;
-
-	if (match(endp, "s", "second"))
-		*t = time_from_sec(l);
-	else if (match(endp, "m", "minute"))
-		*t = time_from_sec(l * 60);
-	else if (match(endp, "h", "hour"))
-		*t = time_from_sec(l * 60 * 60);
-	else if (match(endp, "d", "day"))
-		*t = time_from_sec(l * 60 * 60 * 24);
-	else if (match(endp, "ms", "millisecond"))
-		*t = time_from_msec(l);
-	else if (match(endp, "us", "microsecond"))
-		*t = time_from_usec(l);
-	else if (match(endp, "ns", "nanosecond"))
-		*t = time_from_nsec(l);
-	else
-		return tal_fmt(NULL, "Unknown time unit %s", endp);
-	return NULL;
-}
-
-void opt_show_time(char buf[OPT_SHOW_LEN], const struct timerel *t)
-{
-	if (t->ts.tv_nsec) {
-		if (t->ts.tv_nsec % 1000)
-			sprintf(buf, "%"PRIu64"ns", time_to_nsec(*t));
-		else if (t->ts.tv_nsec % 1000000)
-			sprintf(buf, "%"PRIu64"us", time_to_usec(*t));
-		else
-			sprintf(buf, "%"PRIu64"ms", time_to_msec(*t));
-	} else if (t->ts.tv_sec) {
-		if (t->ts.tv_sec % (60 * 60 * 24) == 0)
-			sprintf(buf, "%lud", t->ts.tv_sec / (60 * 60 * 24));
-		else if (t->ts.tv_sec % (60 * 60) == 0)
-			sprintf(buf, "%luh", t->ts.tv_sec / (60 * 60));
-		else if (t->ts.tv_sec % 60 == 0)
-			sprintf(buf, "%lum", t->ts.tv_sec / 60);
-		else
-			sprintf(buf, "%lus", t->ts.tv_sec);
-	} else
-		sprintf(buf, "%lus", t->ts.tv_sec);
-}

lightningd/opt_time.h

@@ -1,10 +0,0 @@
-#ifndef LIGHTNING_LIGHTNINGD_OPT_TIME_H
-#define LIGHTNING_LIGHTNINGD_OPT_TIME_H
-#include "config.h"
-#include <ccan/opt/opt.h>
-#include <ccan/time/time.h>
-
-char *opt_set_time(const char *arg, struct timerel *t);
-void opt_show_time(char buf[OPT_SHOW_LEN], const struct timerel *t);
-
-#endif /* LIGHTNING_LIGHTNINGD_OPT_TIME_H */

lightningd/options.c

@@ -22,7 +22,6 @@
 #include <lightningd/jsonrpc.h>
 #include <lightningd/lightningd.h>
 #include <lightningd/log.h>
-#include <lightningd/opt_time.h>
 #include <lightningd/options.h>
 #include <lightningd/subd.h>
 #include <stdio.h>
@@ -335,8 +334,9 @@ static void config_register_opts(struct lightningd *ld)
 	opt_register_arg("--cltv-final", opt_set_u32, opt_show_u32,
 			 &ld->config.cltv_final,
 			 "Number of blocks for final ctlv_expiry");
-	opt_register_arg("--commit-time", opt_set_time, opt_show_time,
-			 &ld->config.commit_time,
+	opt_register_arg("--commit-time=<millseconds>",
+			 opt_set_u32, opt_show_u32,
+			 &ld->config.commit_time_ms,
 			 "Time after changes before sending out COMMIT");
 	opt_register_arg("--fee-base", opt_set_u32, opt_show_u32,
 			 &ld->config.fee_base,
@@ -475,7 +475,7 @@ static const struct config testnet_config = {
 	.cltv_final = 6,
 
 	/* Send commit 10msec after receiving; almost immediately. */
-	.commit_time = TIME_FROM_MSEC(10),
+	.commit_time_ms = 10,
 
 	/* Allow dust payments */
 	.fee_base = 1,
@@ -527,7 +527,7 @@ static const struct config mainnet_config = {
 	.cltv_final = 8,
 
 	/* Send commit 10msec after receiving; almost immediately. */
-	.commit_time = TIME_FROM_MSEC(10),
+	.commit_time_ms = 10,
 
 	/* Discourage dust payments */
 	.fee_base = 1000,