lukechilds
/
lightning
mirror of https://github.com/lukechilds/lightning.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity
Browse Source

subd: make functions more generic, don't assume 'struct channel'. 

This means the caller needs to supply an explicit log to base the
subd log on, and also a callback for error handling.

The callback is kind of ugly, but it gets reworked towards the end
of this series.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
ppa-0.6.1
Rusty Russell 7 years ago
parent
1a78efaee5
commit
d2f691b288
6 changed files with 141 additions and 49 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Split View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 5
      lightningd/log.c
  2. 2
      lightningd/log.h
  3. 46
      lightningd/peer_control.c
  4. 67
      lightningd/subd.c
  5. 44
      lightningd/subd.h
  6. 26
      wallet/test/run-wallet.c

5
lightningd/log.c
View File

@ -161,6 +161,11 @@ new_log(const tal_t *ctx, struct log_book *record, const char *fmt, ...)
return log;
}
struct log_book *get_log_book(const struct log *log)
{
return log->lr;
}
enum log_level get_log_level(struct log_book *lr)
{
return lr->print_level;

2
lightningd/log.h
View File

@ -39,6 +39,8 @@ 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);
struct log_book *get_log_book(const struct log *log);
#define set_log_outfn(lr, print, arg) \
set_log_outfn_((lr), \
typesafe_cb_preargs(void, void *, (print), (arg),\

46
lightningd/peer_control.c
View File

@ -277,6 +277,29 @@ static void channel_config(struct lightningd *ld,
ours->channel_reserve_satoshis = 0;
};
static void channel_errmsg(struct channel *channel,
enum side sender,
const struct channel_id *channel_id,
const char *desc,
const u8 *errmsg)
{
if (sender == LOCAL) {
/* If this is NULL, it means subd died. */
if (!errmsg) {
channel_fail_transient(channel, "%s", desc);
return;
}
/* Otherwise overwrite any error we have */
if (!channel->error)
channel->error = tal_dup_arr(channel, u8,
errmsg, tal_len(errmsg), 0);
}
channel_fail_permanent(channel, "%s ERROR %s",
sender == LOCAL ? "sent" : "received", desc);
}
/* Gossipd tells us a peer has connected */
void peer_connected(struct lightningd *ld, const u8 *msg,
int peer_fd, int gossip_fd)
@ -1229,6 +1252,17 @@ static bool tell_if_missing(const struct channel *channel,
return true;
}
/* Only error onchaind can get is if it dies. */
static void onchain_error(struct channel *channel,
enum side sender,
const struct channel_id *channel_id,
const char *desc,
const u8 *errmsg)
{
/* FIXME: re-launch? */
log_broken(channel->log, "%s", desc);
}
/* With a reorg, this can get called multiple times; each time we'll kill
* onchaind (like any other owner), and restart */
static enum watch_result funding_spent(struct channel *channel,
@ -1253,8 +1287,10 @@ static enum watch_result funding_spent(struct channel *channel,
channel_set_owner(channel, new_channel_subd(ld,
"lightning_onchaind",
channel,
channel->log,
onchain_wire_type_name,
onchain_msg,
onchain_error,
NULL));
if (!channel->owner) {
@ -1720,8 +1756,10 @@ static void peer_start_closingd(struct channel *channel,
}
channel_set_owner(channel, new_channel_subd(ld,
"lightning_closingd", channel,
"lightning_closingd",
channel, channel->log,
closing_wire_type_name, closing_msg,
channel_errmsg,
take(&peer_fd), take(&gossip_fd),
NULL));
if (!channel->owner) {
@ -1946,8 +1984,10 @@ static bool peer_start_channeld(struct channel *channel,
channel_set_owner(channel, new_channel_subd(ld,
"lightning_channeld", channel,
channel->log,
channel_wire_type_name,
channel_msg,
channel_errmsg,
take(&peer_fd),
take(&gossip_fd),
take(&hsmfd), NULL));
@ -2325,8 +2365,10 @@ static void peer_accept_channel(struct lightningd *ld,
channel_set_state(channel, UNINITIALIZED, OPENINGD);
channel_set_owner(channel,
new_channel_subd(ld, "lightning_openingd", channel,
channel->log,
opening_wire_type_name,
opening_negotiation_failed,
channel_errmsg,
take(&peer_fd), take(&gossip_fd),
NULL));
if (!channel->owner) {
@ -2394,8 +2436,10 @@ static void peer_offer_channel(struct lightningd *ld,
channel_set_owner(fc->channel,
new_channel_subd(ld,
"lightning_openingd", fc->channel,
fc->channel->log,
opening_wire_type_name,
opening_negotiation_failed,
channel_errmsg,
take(&peer_fd), take(&gossip_fd),
NULL));
if (!fc->channel->owner) {

67
lightningd/subd.c
View File

@ -10,7 +10,6 @@
#include <common/gen_status_wire.h>
#include <errno.h>
#include <fcntl.h>
#include <lightningd/channel.h>
#include <lightningd/lightningd.h>
#include <lightningd/log.h>
#include <lightningd/log_status.h>
@ -389,7 +388,7 @@ static bool log_status_fail(struct subd *sd, const u8 *msg)
static bool handle_received_errmsg(struct subd *sd, const u8 *msg)
{
struct channel *channel = sd->channel;
void *channel = sd->channel;
struct channel_id channel_id;
char *desc;
@ -401,14 +400,14 @@ static bool handle_received_errmsg(struct subd *sd, const u8 *msg)
/* Don't free sd; we're may be about to free channel. */
sd->channel = NULL;
channel_fail_permanent(channel,
"%s: received ERROR %s", sd->name, desc);
if (sd->errcb)
sd->errcb(channel, REMOTE, &channel_id, desc, NULL);
return true;
}
static bool handle_sent_errmsg(struct subd *sd, const u8 *msg)
{
struct channel *channel = sd->channel;
void *channel = sd->channel;
struct channel_id channel_id;
char *desc;
u8 *errmsg;
@ -418,13 +417,11 @@ static bool handle_sent_errmsg(struct subd *sd, const u8 *msg)
return false;
/* FIXME: if not all channels failed, hand back to gossipd! */
if (!channel->error)
channel->error = tal_steal(channel, errmsg);
/* Don't free sd; we're may be about to free channel. */
sd->channel = NULL;
channel_fail_permanent(channel,
"%s: sent ERROR %s", sd->name, desc);
if (sd->errcb)
sd->errcb(channel, LOCAL, &channel_id, desc, errmsg);
return true;
}
@ -573,7 +570,7 @@ static void destroy_subd(struct subd *sd)
/* Peer still attached? */
if (sd->channel) {
/* Don't loop back when we fail it. */
struct channel *channel = sd->channel;
void *channel = sd->channel;
struct db *db = sd->ld->wallet->db;
bool outer_transaction;
@ -583,9 +580,11 @@ static void destroy_subd(struct subd *sd)
outer_transaction = db->in_transaction;
if (!outer_transaction)
db_begin_transaction(db);
channel_fail_transient(channel,
"Owning subdaemon %s died (%i)",
sd->name, status);
if (sd->errcb)
sd->errcb(channel, LOCAL, NULL,
tal_fmt(sd, "Owning subdaemon %s died (%i)",
sd->name, status),
NULL);
if (!outer_transaction)
db_commit_transaction(db);
}
@ -625,10 +624,16 @@ static struct io_plan *msg_setup(struct io_conn *conn, struct subd *sd)
static struct subd *new_subd(struct lightningd *ld,
const char *name,
struct channel *channel,
void *channel,
struct log *base_log,
const char *(*msgname)(int msgtype),
unsigned int (*msgcb)(struct subd *,
const u8 *, const int *fds),
void (*errcb)(void *channel,
enum side sender,
const struct channel_id *channel_id,
const char *desc,
const u8 *errmsg),
va_list *ap)
{
struct subd *sd = tal(ld, struct subd);
@ -649,9 +654,9 @@ static struct subd *new_subd(struct lightningd *ld,
return tal_free(sd);
}
sd->ld = ld;
if (channel) {
sd->log = new_log(sd, channel->peer->log_book, "%s-%s", name,
log_prefix(channel->log));
if (base_log) {
sd->log = new_log(sd, get_log_book(base_log), "%s-%s", name,
log_prefix(base_log));
} else {
sd->log = new_log(sd, ld->log_book, "%s(%u):", name, sd->pid);
}
@ -660,6 +665,7 @@ static struct subd *new_subd(struct lightningd *ld,
sd->must_not_exit = false;
sd->msgname = msgname;
sd->msgcb = msgcb;
sd->errcb = errcb;
sd->fds_in = NULL;
msg_queue_init(&sd->outq, sd);
tal_add_destructor(sd, destroy_subd);
@ -686,25 +692,32 @@ struct subd *new_global_subd(struct lightningd *ld,
struct subd *sd;
va_start(ap, msgcb);
sd = new_subd(ld, name, NULL, msgname, msgcb, &ap);
sd = new_subd(ld, name, NULL, NULL, msgname, msgcb, NULL, &ap);
va_end(ap);
sd->must_not_exit = true;
return sd;
}
struct subd *new_channel_subd(struct lightningd *ld,
const char *name,
struct channel *channel,
const char *(*msgname)(int msgtype),
unsigned int (*msgcb)(struct subd *, const u8 *,
const int *fds), ...)
struct subd *new_channel_subd_(struct lightningd *ld,
const char *name,
void *channel,
struct log *base_log,
const char *(*msgname)(int msgtype),
unsigned int (*msgcb)(struct subd *, const u8 *,
const int *fds),
void (*errcb)(void *channel,
enum side sender,
const struct channel_id *channel_id,
const char *desc,
const u8 *errmsg),
...)
{
va_list ap;
struct subd *sd;
va_start(ap, msgcb);
sd = new_subd(ld, name, channel, msgname, msgcb, &ap);
va_start(ap, errcb);
sd = new_subd(ld, name, channel, base_log, msgname, msgcb, errcb, &ap);
va_end(ap);
return sd;
}
@ -764,7 +777,7 @@ void subd_shutdown(struct subd *sd, unsigned int seconds)
tal_free(sd);
}
void subd_release_channel(struct subd *owner, struct channel *channel)
void subd_release_channel(struct subd *owner, void *channel)
{
/* If owner is a per-peer-daemon, and not already freeing itself... */
if (owner->channel) {

44
lightningd/subd.h
View File

@ -5,6 +5,7 @@
#include <ccan/list/list.h>
#include <ccan/short_types/short_types.h>
#include <ccan/tal/tal.h>
#include <ccan/typesafe_cb/typesafe_cb.h>
#include <common/msg_queue.h>
struct io_conn;
@ -26,7 +27,7 @@ struct subd {
struct io_conn *conn;
/* If we are associated with a single channel, this points to it. */
struct channel *channel;
void *channel;
/* For logging */
struct log *log;
@ -35,6 +36,13 @@ struct subd {
unsigned (*msgcb)(struct subd *, const u8 *, const int *);
const char *(*msgname)(int msgtype);
/* Callback when an errormsg sent/received, or subd died. */
void (*errcb)(void *channel,
enum side sender,
const struct channel_id *channel_id,
const char *desc,
const u8 *errmsg);
/* Buffer for input. */
u8 *msg_in;
@ -77,6 +85,7 @@ struct subd *new_global_subd(struct lightningd *ld,
* @ld: global state
* @name: basename of daemon
* @channel: channel to associate.
* @base_log: log to use (actually makes a copy so it has name in prefix)
* @msgname: function to get name from messages
* @msgcb: function to call (inside db transaction) when non-fatal message received (or NULL)
* @...: NULL-terminated list of pointers to fds to hand as fd 3, 4...
@ -86,14 +95,27 @@ struct subd *new_global_subd(struct lightningd *ld,
* that many @fds are received before calling again. If it returns -1, the
* subdaemon is shutdown.
*/
struct subd *new_channel_subd(struct lightningd *ld,
const char *name,
struct channel *channel,
const char *(*msgname)(int msgtype),
unsigned int (*msgcb)(struct subd *, const u8 *,
const int *fds),
...);
struct subd *new_channel_subd_(struct lightningd *ld,
const char *name,
void *channel,
struct log *base_log,
const char *(*msgname)(int msgtype),
unsigned int (*msgcb)(struct subd *, const u8 *,
const int *fds),
void (*errcb)(void *channel,
enum side sender,
const struct channel_id *channel_id,
const char *desc,
const u8 *errmsg),
...);
#define new_channel_subd(ld, name, channel, log, msgname, msgcb, errcb, ...) \
new_channel_subd_((ld), (name), (channel), (log), (msgname), (msgcb), \
typesafe_cb_postargs(void, void *, (errcb), \
(channel), enum side, \
const struct channel_id *, \
const char *, const u8 *), \
__VA_ARGS__)
/**
* subd_raw - raw interface to get a subdaemon on an fd (for HSM)
* @ld: global state
@ -144,14 +166,14 @@ void subd_req_(const tal_t *ctx,
void *replycb_data);
/**
* subd_release_channel - shut down a subdaemon which no longer owns the channel.
* subd_release_channel - shut down a subdaemon which no longer owns the channe;.
* @owner: subd which owned channel.
* @channel: channel to release.
*
* If the subdaemon is not already shutting down, and it is a per-channel
* subdaemon, this shuts it down.
*/
void subd_release_channel(struct subd *owner, struct channel *channel);
void subd_release_channel(struct subd *owner, void *channel);
/**
* subd_shutdown - try to politely shut down a subdaemon.

26
wallet/test/run-wallet.c
View File

@ -325,15 +325,21 @@ void log_io(struct log *log UNNEEDED, enum log_level dir UNNEEDED, const char *c
/* Generated stub for logv_add */
void logv_add(struct log *log UNNEEDED, const char *fmt UNNEEDED, va_list ap UNNEEDED)
{ fprintf(stderr, "logv_add called!\n"); abort(); }
/* Generated stub for new_channel_subd */
struct subd *new_channel_subd(struct lightningd *ld UNNEEDED,
const char *name UNNEEDED,
struct channel *channel UNNEEDED,
const char *(*msgname)(int msgtype) UNNEEDED,
unsigned int (*msgcb)(struct subd * UNNEEDED, const u8 * UNNEEDED,
const int *fds) UNNEEDED,
...)
{ fprintf(stderr, "new_channel_subd called!\n"); abort(); }
/* Generated stub for new_channel_subd_ */
struct subd *new_channel_subd_(struct lightningd *ld UNNEEDED,
const char *name UNNEEDED,
void *channel UNNEEDED,
struct log *base_log UNNEEDED,
const char *(*msgname)(int msgtype) UNNEEDED,
unsigned int (*msgcb)(struct subd * UNNEEDED, const u8 * UNNEEDED,
const int *fds) UNNEEDED,
void (*errcb)(void *channel UNNEEDED,
enum side sender UNNEEDED,
const struct channel_id *channel_id UNNEEDED,
const char *desc UNNEEDED,
const u8 *errmsg) UNNEEDED,
...)
{ fprintf(stderr, "new_channel_subd_ called!\n"); abort(); }
/* Generated stub for new_json_result */
struct json_result *new_json_result(const tal_t *ctx UNNEEDED)
{ fprintf(stderr, "new_json_result called!\n"); abort(); }
@ -379,7 +385,7 @@ char *sanitize_error(const tal_t *ctx UNNEEDED, const u8 *errmsg UNNEEDED,
struct channel_id *channel_id UNNEEDED)
{ fprintf(stderr, "sanitize_error called!\n"); abort(); }
/* Generated stub for subd_release_channel */
void subd_release_channel(struct subd *owner UNNEEDED, struct channel *channel UNNEEDED)
void subd_release_channel(struct subd *owner UNNEEDED, void *channel UNNEEDED)
{ fprintf(stderr, "subd_release_channel called!\n"); abort(); }
/* Generated stub for subd_req_ */
void subd_req_(const tal_t *ctx UNNEEDED,

Write Preview
Loading…
Cancel
Save