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commando: add filtering support.

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1. When we receive a commando command from a remote using the `filter`
   field, use it.
2. Add a `filter` parameter to `commando` to send it: this is usually
   more efficient than using filtering locally.

Of course, older remote nodes will ignore the filter, but that's
harmless.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Added: Plugins: `commando` now supports `filter` as a parameter (for send and receive).
This commit is contained in:
Rusty Russell
2023-01-03 14:53:28 +10:30
parent 1250806060
commit 3f0c5b985b
3 changed files with 24 additions and 2 deletions
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13
plugins/commando.c
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@@ -382,7 +382,7 @@ static void try_command(struct node_id *peer,
const u8 *msg, size_t msglen)
{
struct commando *incoming = tal(plugin, struct commando);
const jsmntok_t *toks, *method, *params, *rune, *id;
const jsmntok_t *toks, *method, *params, *rune, *id, *filter;
const char *buf = (const char *)msg, *failmsg;
struct out_req *req;
const char *cmdid_prefix;
@@ -415,6 +415,7 @@ static void try_command(struct node_id *peer,
return;
}
rune = json_get_member(buf, toks, "rune");
filter = json_get_member(buf, toks, "filter");
id = json_get_member(buf, toks, "id");
if (!id) {
if (!deprecated_apis) {
@@ -476,6 +477,11 @@ static void try_command(struct node_id *peer,
json_object_start(req->js, "params");
json_object_end(req->js);
}
if (filter) {
json_add_jsonstr(req->js, "filter",
json_tok_full(buf, filter),
json_tok_full_len(filter));
}
tal_free(toks);
send_outreq(plugin, req);
}
@@ -700,7 +706,7 @@ static struct command_result *json_commando(struct command *cmd,
{
struct node_id *peer;
const char *method, *cparams;
const char *rune;
const char *rune, *filter;
struct commando *ocmd;
struct outgoing *outgoing;
char *json;
@@ -711,6 +717,7 @@ static struct command_result *json_commando(struct command *cmd,
p_req("method", param_string, &method),
p_opt("params", param_string, &cparams),
p_opt("rune", param_string, &rune),
p_opt("filter", param_string, &filter),
NULL))
return command_param_failed();
@@ -731,6 +738,8 @@ static struct command_result *json_commando(struct command *cmd,
ocmd->json_id, cparams ? cparams : "{}");
if (rune)
tal_append_fmt(&json, ",\"rune\":\"%s\"", rune);
if (filter)
tal_append_fmt(&json, ",\"filter\":%s", filter);
tal_append_fmt(&json, "}");
outgoing = tal(cmd, struct outgoing);