const struct json *
ovsdb_parser_member(struct ovsdb_parser *parser, const char *name,
enum ovsdb_parser_types types)
{
struct json *value;
if (!parser->json) {
return NULL;
}
value = shash_find_data(json_object(parser->json), name);
if (!value) {
if (!(types & OP_OPTIONAL)) {
ovsdb_parser_raise_error(parser,
"Required '%s' member is missing.", name);
}
return NULL;
}
if (((int) value->type >= 0 && value->type < JSON_N_TYPES
&& types & (1u << value->type))
|| (types & OP_ID && value->type == JSON_STRING
&& ovsdb_parser_is_id(value->u.string)))
{
sset_add(&parser->used, name);
return value;
} else {
ovsdb_parser_raise_error(parser, "Type mismatch for member '%s'.",
name);
return NULL;
}
}
struct ovsdb_error *
ovsdb_parser_finish(struct ovsdb_parser *parser)
{
if (!parser->error) {
const struct shash *object = json_object(parser->json);
size_t n_unused;
n_unused = shash_count(object) - sset_count(&parser->used);
if (n_unused) {
struct shash_node *node;
SHASH_FOR_EACH (node, object) {
if (!sset_contains(&parser->used, node->name)) {
if (n_unused > 1) {
ovsdb_parser_raise_error(
parser,
"Member '%s' and %zu other member%s "
"are present but not allowed here.",
node->name, n_unused - 1, n_unused > 2 ? "s" : "");
} else {
ovsdb_parser_raise_error(
parser,
"Member '%s' is present but not allowed here.",
node->name);
}
break;
}
}
}
}
free(parser->name);
sset_destroy(&parser->used);
return parser->error;
}
void
ovsdb_parser_init(struct ovsdb_parser *parser, const struct json *json,
const char *name, ...)
{
va_list args;
va_start(args, name);
parser->name = xvasprintf(name, args);
va_end(args);
sset_init(&parser->used);
parser->error = NULL;
parser->json = (json && json->type == JSON_OBJECT ? json : NULL);
if (!parser->json) {
ovsdb_parser_raise_error(parser, "Object expected.");
}
}
struct json *
ovsdb_execute(struct ovsdb *db, const struct ovsdb_session *session,
const struct json *params,
long long int elapsed_msec, long long int *timeout_msec)
{
struct ovsdb_execution x;
struct ovsdb_error *error;
struct json *results;
size_t n_operations;
size_t i;
if (params->type != JSON_ARRAY
|| !params->u.array.n
|| params->u.array.elems[0]->type != JSON_STRING
|| strcmp(params->u.array.elems[0]->u.string, db->schema->name)) {
if (params->type != JSON_ARRAY) {
error = ovsdb_syntax_error(params, NULL, "array expected");
} else {
error = ovsdb_syntax_error(params, NULL, "database name expected "
"as first parameter");
}
results = ovsdb_error_to_json(error);
ovsdb_error_destroy(error);
return results;
}
x.db = db;
x.session = session;
x.txn = ovsdb_txn_create(db);
x.symtab = ovsdb_symbol_table_create();
x.durable = false;
x.elapsed_msec = elapsed_msec;
x.timeout_msec = LLONG_MAX;
results = NULL;
results = json_array_create_empty();
n_operations = params->u.array.n - 1;
error = NULL;
for (i = 1; i <= n_operations; i++) {
struct json *operation = params->u.array.elems[i];
struct ovsdb_error *parse_error;
struct ovsdb_parser parser;
struct json *result;
const struct json *op;
/* Parse and execute operation. */
ovsdb_parser_init(&parser, operation,
"ovsdb operation %"PRIuSIZE" of %"PRIuSIZE, i, n_operations);
op = ovsdb_parser_member(&parser, "op", OP_ID);
result = json_object_create();
if (op) {
const char *op_name = json_string(op);
ovsdb_operation_executor *executor = lookup_executor(op_name);
if (executor) {
error = executor(&x, &parser, result);
} else {
ovsdb_parser_raise_error(&parser, "No operation \"%s\"",
op_name);
}
} else {
ovs_assert(ovsdb_parser_has_error(&parser));
}
/* A parse error overrides any other error.
* An error overrides any other result. */
parse_error = ovsdb_parser_finish(&parser);
if (parse_error) {
ovsdb_error_destroy(error);
error = parse_error;
}
if (error) {
json_destroy(result);
result = ovsdb_error_to_json(error);
}
if (error && !strcmp(ovsdb_error_get_tag(error), "not supported")
&& timeout_msec) {
ovsdb_txn_abort(x.txn);
*timeout_msec = x.timeout_msec;
json_destroy(result);
json_destroy(results);
results = NULL;
goto exit;
}
/* Add result to array. */
json_array_add(results, result);
if (error) {
break;
}
}
if (!error) {
error = ovsdb_txn_commit(x.txn, x.durable);
if (error) {
json_array_add(results, ovsdb_error_to_json(error));
}
} else {
ovsdb_txn_abort(x.txn);
}
while (json_array(results)->n < n_operations) {
json_array_add(results, json_null_create());
}
exit:
ovsdb_error_destroy(error);
ovsdb_symbol_table_destroy(x.symtab);
return results;
}
