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libplugin: more datastore helpers.

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These ones to fetch inside callbacks.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell
2022-12-12 14:37:46 +10:30
committed by Christian Decker
parent 68f3e3fba9
commit 7b24ea60e3
2 changed files with 112 additions and 1 deletions
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37
plugins/libplugin.h
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@@ -165,7 +165,7 @@ struct json_stream *jsonrpc_stream_fail_data(struct command *cmd,
/* Helper to jsonrpc_request_start() and send_outreq() to update datastore.
* NULL cb means ignore, NULL errcb means plugin_error.
*/
*/
struct command_result *jsonrpc_set_datastore_(struct plugin *plugin,
struct command *cmd,
const char *path,
@@ -210,6 +210,41 @@ struct command_result *jsonrpc_set_datastore_(struct plugin *plugin,
const jsmntok_t *result), \
(arg))
/* Helper to jsonrpc_request_start() and send_outreq() to read datastore.
* If the value not found, cb gets NULL @val.
*/
struct command_result *jsonrpc_get_datastore_(struct plugin *plugin,
struct command *cmd,
const char *path,
struct command_result *(*string_cb)(struct command *command,
const char *val,
void *arg),
struct command_result *(*binary_cb)(struct command *command,
const u8 *val,
void *arg),
void *arg);
#define jsonrpc_get_datastore_string(plugin, cmd, path, cb, arg) \
jsonrpc_get_datastore_((plugin), (cmd), (path), \
typesafe_cb_preargs(struct command_result *, \
void *, \
(cb), (arg), \
struct command *command, \
const char *val), \
NULL, \
(arg))
#define jsonrpc_get_datastore_binary(plugin, cmd, path, cb, arg) \
jsonrpc_get_datastore_((plugin), (cmd), (path), \
NULL, \
typesafe_cb_preargs(struct command_result *, \
void *, \
(cb), (arg), \
struct command *command, \
const u8 *val), \
(arg))
/* This command is finished, here's the response (the content of the
* "result" or "error" field) */
WARN_UNUSED_RESULT