Since its inception, QMP has been using HMP's do_info() function
to run query commands.
This was a bad choice, as it made do_info() more complex and
contributed to couple QMP and HMP.
This commit fixes that by doing the following changes:
1. Introduce qmp_find_query_cmd() and use it to directly lookup
the info_cmds table
2. Introduce qmp_call_query_cmd() so that QMP code is able
to call query handlers without using do_info()
3. Drop do_info() usage
We need all the three changes in one shot so that we don't break
the calling of query commands in QMP.
Signed-off-by: Luiz Capitulino <lcapitul...@redhat.com>
---
monitor.c | 39 +++++++++++++++++++++++++++++++--------
1 files changed, 31 insertions(+), 8 deletions(-)
diff --git a/monitor.c b/monitor.c
index b2d8a2d..0ddc826 100644
--- a/monitor.c
+++ b/monitor.c
@@ -3387,6 +3387,11 @@ static const mon_cmd_t *monitor_find_command(const char
*cmdname)
return find_dispatch_table(mon_cmds, cmdname);
}
+static const mon_cmd_t *qmp_find_query_cmd(const char *info_item)
+{
+ return find_dispatch_table(info_cmds, info_item);
+}
+
static const mon_cmd_t *monitor_parse_command(Monitor *mon,
const char *cmdline,
QDict *qdict)
@@ -4326,6 +4331,24 @@ static QDict *qmp_check_input_obj(QObject *input_obj)
return input_dict;
}
+static void qmp_call_query_cmd(Monitor *mon, const mon_cmd_t *cmd)
+{
+ QObject *ret_data = NULL;
+
+ if (monitor_handler_is_async(cmd)) {
+ qmp_async_info_handler(mon, cmd);
+ if (monitor_has_error(mon)) {
+ monitor_protocol_emitter(mon, NULL);
+ }
+ } else {
+ cmd->mhandler.info_new(mon, &ret_data);
+ if (ret_data) {
+ monitor_protocol_emitter(mon, ret_data);
+ qobject_decref(ret_data);
+ }
+ }
+}
+
static void handle_qmp_command(JSONMessageParser *parser, QList *tokens)
{
int err;
@@ -4333,8 +4356,9 @@ static void handle_qmp_command(JSONMessageParser *parser,
QList *tokens)
QDict *input, *args;
const mon_cmd_t *cmd;
Monitor *mon = cur_mon;
- const char *cmd_name, *info_item;
+ const char *cmd_name, *query_cmd;
+ query_cmd = NULL;
args = input = NULL;
obj = json_parser_parse(tokens, NULL);
@@ -4360,16 +4384,13 @@ static void handle_qmp_command(JSONMessageParser
*parser, QList *tokens)
}
/*
- * XXX: We need this special case until we get info handlers
- * converted into 'query-' commands
+ * XXX: We need this special case until QMP has its own dispatch table
*/
if (compare_cmd(cmd_name, "info")) {
qerror_report(QERR_COMMAND_NOT_FOUND, cmd_name);
goto err_out;
- } else if (strstart(cmd_name, "query-", &info_item)) {
- cmd = monitor_find_command("info");
- qdict_put_obj(input, "arguments",
- qobject_from_jsonf("{ 'item': %s }", info_item));
+ } else if (strstart(cmd_name, "query-", &query_cmd)) {
+ cmd = qmp_find_query_cmd(query_cmd);
} else {
cmd = monitor_find_command(cmd_name);
}
@@ -4392,7 +4413,9 @@ static void handle_qmp_command(JSONMessageParser *parser,
QList *tokens)
goto err_out;
}
- if (monitor_handler_is_async(cmd)) {
+ if (query_cmd) {
+ qmp_call_query_cmd(mon, cmd);
+ } else if (monitor_handler_is_async(cmd)) {
err = qmp_async_cmd_handler(mon, cmd, args);
if (err) {
/* emit the error response */
--
1.7.3.rc2.dirty
