+static struct ovsdb_jsonrpc_options *
+add_remote(struct shash *remotes, const char *target)
+{
+ struct ovsdb_jsonrpc_options *options;
+
+ options = shash_find_data(remotes, target);
+ if (!options) {
+ options = ovsdb_jsonrpc_default_options();
+ shash_add(remotes, target, options);
+ }
+
+ return options;
+}
+
+static const union ovsdb_atom *
+read_column(const struct ovsdb_row *row, const char *column_name,
+ enum ovsdb_atomic_type type)
+{
+ static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1);
+ const struct ovsdb_table_schema *schema = row->table->schema;
+ const struct ovsdb_column *column;
+ const struct ovsdb_datum *datum;
+
+ column = ovsdb_table_schema_get_column(schema, column_name);
+ if (!column) {
+ VLOG_DBG_RL(&rl, "Table `%s' has no `%s' column",
+ schema->name, column_name);
+ return false;
+ }
+
+ if (column->type.key.type != type
+ || column->type.value.type != OVSDB_TYPE_VOID
+ || column->type.n_max != 1) {
+ if (!VLOG_DROP_DBG(&rl)) {
+ char *type_name = ovsdb_type_to_english(&column->type);
+ VLOG_DBG("Table `%s' column `%s' has type %s, not expected "
+ "type %s.", schema->name, column_name, type_name,
+ ovsdb_atomic_type_to_string(type));
+ }
+ return false;
+ }
+
+ datum = &row->fields[column->index];
+ return datum->n ? datum->keys : NULL;
+}
+
+static bool
+read_integer_column(const struct ovsdb_row *row, const char *column_name,
+ long long int *integerp)
+{
+ const union ovsdb_atom *atom;
+
+ atom = read_column(row, column_name, OVSDB_TYPE_INTEGER);
+ *integerp = atom ? atom->integer : 0;
+ return atom != NULL;
+}
+
+static bool
+read_string_column(const struct ovsdb_row *row, const char *column_name,
+ const char **stringp)
+{
+ const union ovsdb_atom *atom;
+
+ atom = read_column(row, column_name, OVSDB_TYPE_STRING);
+ *stringp = atom ? atom->string : 0;
+ return atom != NULL;
+}
+
+/* Adds a remote and options to 'remotes', based on the Manager table row in
+ * 'row'. */
+static void
+add_manager_options(struct shash *remotes, const struct ovsdb_row *row)
+{
+ static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1);
+ struct ovsdb_jsonrpc_options *options;
+ long long int max_backoff, probe_interval;
+ const char *target;
+
+ if (!read_string_column(row, "target", &target) || !target) {
+ VLOG_INFO_RL(&rl, "Table `%s' has missing or invalid `target' column",
+ row->table->schema->name);
+ return;
+ }
+
+ options = add_remote(remotes, target);
+ if (read_integer_column(row, "max_backoff", &max_backoff)) {
+ options->max_backoff = max_backoff;
+ }
+ if (read_integer_column(row, "inactivity_probe", &probe_interval)) {
+ options->probe_interval = probe_interval;
+ }
+}
+