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qmp: De-duplicate error response building 

All callers of qmp_build_error_object() duplicate the code to wrap it
in a response object.  Replace it by qmp_error_response() that
captures the duplicated code, including error_free().

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20180703085358.13941-23-armbru@redhat.com>
This commit is contained in:
Markus Armbruster 2018-07-03 10:53:48 +02:00
parent a193352ff9
commit cee32796ca
4 changed files with 15 additions and 22 deletions
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2
include/qapi/qmp/dispatch.h
View File

@ -47,7 +47,7 @@ void qmp_enable_command(QmpCommandList *cmds, const char *name);
bool qmp_command_is_enabled(const QmpCommand *cmd);
const char *qmp_command_name(const QmpCommand *cmd);
bool qmp_has_success_response(const QmpCommand *cmd);
QObject *qmp_build_error_object(Error *err);
QDict *qmp_error_response(Error *err);
QObject *qmp_dispatch(QmpCommandList *cmds, QObject *request,
bool allow_oob);
bool qmp_is_oob(QDict *dict);

7
monitor.c
View File

@ -4107,14 +4107,9 @@ static int monitor_can_read(void *opaque)
static void monitor_qmp_respond(Monitor *mon, QObject *rsp,
Error *err, QObject *id)
{
QDict *qdict = NULL;
if (err) {
assert(!rsp);
qdict = qdict_new();
qdict_put_obj(qdict, "error", qmp_build_error_object(err));
error_free(err);
rsp = QOBJECT(qdict);
rsp = QOBJECT(qmp_error_response(err));
}
if (rsp) {

20
qapi/qmp-dispatch.c
View File

@ -141,11 +141,15 @@ static QObject *do_qmp_dispatch(QmpCommandList *cmds, QObject *request,
return ret;
}
QObject *qmp_build_error_object(Error *err)
QDict *qmp_error_response(Error *err)
{
return qobject_from_jsonf("{ 'class': %s, 'desc': %s }",
QapiErrorClass_str(error_get_class(err)),
error_get_pretty(err));
QDict *rsp;
rsp = qdict_from_jsonf_nofail("{ 'error': { 'class': %s, 'desc': %s } }",
QapiErrorClass_str(error_get_class(err)),
error_get_pretty(err));
error_free(err);
return rsp;
}
/*
@ -166,15 +170,13 @@ QObject *qmp_dispatch(QmpCommandList *cmds, QObject *request,
ret = do_qmp_dispatch(cmds, request, allow_oob, &err);
rsp = qdict_new();
if (err) {
qdict_put_obj(rsp, "error", qmp_build_error_object(err));
error_free(err);
rsp = qmp_error_response(err);
} else if (ret) {
rsp = qdict_new();
qdict_put_obj(rsp, "return", ret);
} else {
qobject_unref(rsp);
return NULL;
rsp = NULL;
}
return QOBJECT(rsp);

8
qga/main.c
View File

@ -610,15 +610,13 @@ static void process_event(JSONMessageParser *parser, GQueue *tokens)
qdict = qobject_to(QDict, json_parser_parse_err(tokens, NULL, &err));
if (err || !qdict) {
qobject_unref(qdict);
qdict = qdict_new();
if (!err) {
g_warning("failed to parse event: unknown error");
error_setg(&err, QERR_JSON_PARSING);
} else {
g_warning("failed to parse event: %s", error_get_pretty(err));
}
qdict_put_obj(qdict, "error", qmp_build_error_object(err));
error_free(err);
qdict = qmp_error_response(err);
}
/* handle host->guest commands */
@ -627,11 +625,9 @@ static void process_event(JSONMessageParser *parser, GQueue *tokens)
} else {
if (!qdict_haskey(qdict, "error")) {
qobject_unref(qdict);
qdict = qdict_new();
g_warning("unrecognized payload format");
error_setg(&err, QERR_UNSUPPORTED);
qdict_put_obj(qdict, "error", qmp_build_error_object(err));
error_free(err);
qdict = qmp_error_response(err);
}
ret = send_response(s, QOBJECT(qdict));
if (ret < 0) {