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lightningd: maintain a status billboard for each channel.

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Each state (effectively, each daemon) has two slots: a permanent slot
if something permanent happens (usually, a failure), and a transient
slot which summarizes what's happening right now.

Uncommitted channels only have a transient slot, by their very nature.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell
2018-02-23 16:23:44 +10:30
committed by Christian Decker
parent d499c34db2
commit 86a04c59d4
4 changed files with 32 additions and 0 deletions
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19
lightningd/channel.c
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@@ -103,6 +103,7 @@ struct channel *new_channel(struct peer *peer, u64 dbid,
enum side funder,
/* NULL or stolen */
struct log *log,
const char *transient_billboard TAKES,
u8 channel_flags,
const struct channel_config *our_config,
u32 minimum_depth,
@@ -147,6 +148,9 @@ struct channel *new_channel(struct peer *peer, u64 dbid,
channel->state = state;
channel->funder = funder;
channel->owner = NULL;
memset(&channel->billboard, 0, sizeof(channel->billboard));
channel->billboard.transient = tal_strdup(channel, transient_billboard);
if (!log) {
/* FIXME: update log prefix when we get scid */
/* FIXME: Use minimal unique pubkey prefix for logs! */
@@ -314,6 +318,21 @@ void channel_internal_error(struct channel *channel, const char *fmt, ...)
tal_free(why);
}
void channel_set_billboard(struct channel *channel, bool perm, const char *str)
{
const char **p;
if (perm)
p = &channel->billboard.permanent[channel->state];
else
p = &channel->billboard.transient;
tal_free(*p);
*p = tal_fmt(channel, "%s:%s", channel_state_name(channel), str);
if (taken(str))
tal_free(str);
}
void channel_fail_transient(struct channel *channel, const char *fmt, ...)
{
va_list ap;