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bitcoind: initialize Bitcoin-backend plugin early

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We need our Bitcoin backend to be initialized, but the plugins have not yet been
started at this point.
This commit is contained in:
darosior 2020-01-07 18:08:03 +01:00 • committed by Rusty Russell
parent c4ff960b74
commit 3e8a782da7
1 changed files with 38 additions and 0 deletions
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38
lightningd/bitcoind.c
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@ -38,6 +38,43 @@ static const char *methods[] = {"getchaininfo", "getrawblockbyheight",
"sendrawtransaction", "getutxout",
"getfeerate"};
static void plugin_config_cb(const char *buffer,
const jsmntok_t *toks,
const jsmntok_t *idtok,
struct plugin *plugin)
{
plugin->plugin_state = CONFIGURED;
io_break(plugin);
}
static void config_plugin(struct plugin *plugin)
{
struct jsonrpc_request *req;
req = jsonrpc_request_start(plugin, "init", plugin->log,
plugin_config_cb, plugin);
plugin_populate_init_request(plugin, req);
jsonrpc_request_end(req);
plugin_request_send(plugin, req);
io_loop_with_timers(plugin->plugins->ld);
}
static void wait_plugin(struct bitcoind *bitcoind, const char *method,
struct plugin *p)
{
/* We need our Bitcoin backend to be initialized, but the plugins have
* not yet been started at this point.
* So send `init` to each plugin which registered for a Bitcoin method
* and wait for its response, which we take as an ACK that it is
* operational (i.e. bcli will wait for `bitcoind` to be warmed up
* before responding to `init`).
* Note that lightningd/plugin will not send `init` to an already
* configured plugin. */
if (p->plugin_state != CONFIGURED)
config_plugin(p);
strmap_add(&bitcoind->pluginsmap, method, p);
}
void bitcoind_check_commands(struct bitcoind *bitcoind)
{
size_t i;
@ -50,6 +87,7 @@ void bitcoind_check_commands(struct bitcoind *bitcoind)
"Bitcoin plugin (by default plugins/bcli) "
"registered ?", methods[i]);
}
wait_plugin(bitcoind, methods[i], p);
}
}