+
+ pre_get_column(ctx, table, column_name, &column);
+ free(column_name);
+}
+
+static void
+pre_cmd_get(struct vsctl_context *ctx)
+{
+ const char *id = shash_find_data(&ctx->options, "--id");
+ const char *table_name = ctx->argv[1];
+ const struct vsctl_table_class *table;
+ int i;
+
+ /* Using "get" without --id or a column name could possibly make sense.
+ * Maybe, for example, a ovs-vsctl run wants to assert that a row exists.
+ * But it is unlikely that an interactive user would want to do that, so
+ * issue a warning if we're running on a terminal. */
+ if (!id && ctx->argc <= 3 && isatty(STDOUT_FILENO)) {
+ VLOG_WARN("\"get\" command without row arguments or \"--id\" is "
+ "possibly erroneous");
+ }
+
+ table = pre_get_table(ctx, table_name);
+ for (i = 3; i < ctx->argc; i++) {
+ if (!strcasecmp(ctx->argv[i], "_uuid")
+ || !strcasecmp(ctx->argv[i], "-uuid")) {
+ continue;
+ }
+
+ pre_parse_column_key_value(ctx, ctx->argv[i], table);
+ }
+}
+
+static void
+cmd_get(struct vsctl_context *ctx)
+{
+ const char *id = shash_find_data(&ctx->options, "--id");
+ bool if_exists = shash_find(&ctx->options, "--if-exists");
+ const char *table_name = ctx->argv[1];
+ const char *record_id = ctx->argv[2];
+ const struct vsctl_table_class *table;
+ const struct ovsdb_idl_row *row;
+ struct ds *out = &ctx->output;
+ int i;
+
+ table = get_table(table_name);
+ row = must_get_row(ctx, table, record_id);
+ if (id) {
+ struct ovsdb_symbol *symbol;
+ bool new;
+
+ symbol = create_symbol(ctx->symtab, id, &new);
+ if (!new) {
+ vsctl_fatal("row id \"%s\" specified on \"get\" command was used "
+ "before it was defined", id);
+ }
+ symbol->uuid = row->uuid;
+
+ /* This symbol refers to a row that already exists, so disable warnings
+ * about it being unreferenced. */
+ symbol->strong_ref = true;
+ }
+ for (i = 3; i < ctx->argc; i++) {
+ const struct ovsdb_idl_column *column;
+ const struct ovsdb_datum *datum;
+ char *key_string;
+
+ /* Special case for obtaining the UUID of a row. We can't just do this
+ * through parse_column_key_value() below since it returns a "struct
+ * ovsdb_idl_column" and the UUID column doesn't have one. */
+ if (!strcasecmp(ctx->argv[i], "_uuid")
+ || !strcasecmp(ctx->argv[i], "-uuid")) {
+ ds_put_format(out, UUID_FMT"\n", UUID_ARGS(&row->uuid));
+ continue;
+ }
+
+ die_if_error(parse_column_key_value(ctx->argv[i], table,
+ &column, &key_string,
+ NULL, NULL, 0, NULL));
+
+ ovsdb_idl_txn_verify(row, column);
+ datum = ovsdb_idl_read(row, column);
+ if (key_string) {
+ union ovsdb_atom key;
+ unsigned int idx;
+
+ if (column->type.value.type == OVSDB_TYPE_VOID) {
+ vsctl_fatal("cannot specify key to get for non-map column %s",
+ column->name);
+ }
+
+ die_if_error(ovsdb_atom_from_string(&key,
+ &column->type.key,
+ key_string, ctx->symtab));
+
+ idx = ovsdb_datum_find_key(datum, &key,
+ column->type.key.type);
+ if (idx == UINT_MAX) {
+ if (!if_exists) {
+ vsctl_fatal("no key \"%s\" in %s record \"%s\" column %s",
+ key_string, table->class->name, record_id,
+ column->name);
+ }
+ } else {
+ ovsdb_atom_to_string(&datum->values[idx],
+ column->type.value.type, out);
+ }
+ ovsdb_atom_destroy(&key, column->type.key.type);
+ } else {
+ ovsdb_datum_to_string(datum, &column->type, out);
+ }
+ ds_put_char(out, '\n');
+
+ free(key_string);
+ }
+}
+
+static void
+parse_column_names(const char *column_names,
+ const struct vsctl_table_class *table,
+ const struct ovsdb_idl_column ***columnsp,
+ size_t *n_columnsp)
+{
+ const struct ovsdb_idl_column **columns;
+ size_t n_columns;
+
+ if (!column_names) {
+ size_t i;
+
+ n_columns = table->class->n_columns + 1;
+ columns = xmalloc(n_columns * sizeof *columns);
+ columns[0] = NULL;
+ for (i = 0; i < table->class->n_columns; i++) {
+ columns[i + 1] = &table->class->columns[i];
+ }
+ } else {
+ char *s = xstrdup(column_names);
+ size_t allocated_columns;
+ char *save_ptr = NULL;
+ char *column_name;
+
+ columns = NULL;
+ allocated_columns = n_columns = 0;
+ for (column_name = strtok_r(s, ", ", &save_ptr); column_name;
+ column_name = strtok_r(NULL, ", ", &save_ptr)) {
+ const struct ovsdb_idl_column *column;
+
+ if (!strcasecmp(column_name, "_uuid")) {
+ column = NULL;
+ } else {
+ die_if_error(get_column(table, column_name, &column));
+ }
+ if (n_columns >= allocated_columns) {
+ columns = x2nrealloc(columns, &allocated_columns,
+ sizeof *columns);
+ }
+ columns[n_columns++] = column;
+ }
+ free(s);
+
+ if (!n_columns) {
+ vsctl_fatal("must specify at least one column name");
+ }
+ }
+ *columnsp = columns;
+ *n_columnsp = n_columns;
+}
+
+
+static void
+pre_list_columns(struct vsctl_context *ctx,
+ const struct vsctl_table_class *table,
+ const char *column_names)
+{
+ const struct ovsdb_idl_column **columns;
+ size_t n_columns;
+ size_t i;
+
+ parse_column_names(column_names, table, &columns, &n_columns);
+ for (i = 0; i < n_columns; i++) {
+ if (columns[i]) {
+ ovsdb_idl_add_column(ctx->idl, columns[i]);
+ }
+ }
+ free(columns);
+}
+
+static void
+pre_cmd_list(struct vsctl_context *ctx)
+{
+ const char *column_names = shash_find_data(&ctx->options, "--columns");
+ const char *table_name = ctx->argv[1];
+ const struct vsctl_table_class *table;
+
+ table = pre_get_table(ctx, table_name);
+ pre_list_columns(ctx, table, column_names);
+}
+
+static struct table *
+list_make_table(const struct ovsdb_idl_column **columns, size_t n_columns)
+{
+ struct table *out;
+ size_t i;
+
+ out = xmalloc(sizeof *out);
+ table_init(out);
+
+ for (i = 0; i < n_columns; i++) {
+ const struct ovsdb_idl_column *column = columns[i];
+ const char *column_name = column ? column->name : "_uuid";
+
+ table_add_column(out, "%s", column_name);
+ }
+
+ return out;
+}
+
+static void
+list_record(const struct ovsdb_idl_row *row,
+ const struct ovsdb_idl_column **columns, size_t n_columns,
+ struct table *out)
+{
+ size_t i;
+
+ table_add_row(out);
+ for (i = 0; i < n_columns; i++) {
+ const struct ovsdb_idl_column *column = columns[i];
+ struct cell *cell = table_add_cell(out);
+
+ if (!column) {
+ struct ovsdb_datum datum;
+ union ovsdb_atom atom;
+
+ atom.uuid = row->uuid;
+
+ datum.keys = &atom;
+ datum.values = NULL;
+ datum.n = 1;
+
+ cell->json = ovsdb_datum_to_json(&datum, &ovsdb_type_uuid);
+ cell->type = &ovsdb_type_uuid;
+ } else {
+ const struct ovsdb_datum *datum = ovsdb_idl_read(row, column);
+
+ cell->json = ovsdb_datum_to_json(datum, &column->type);
+ cell->type = &column->type;
+ }
+ }
+}
+
+static void
+cmd_list(struct vsctl_context *ctx)
+{
+ const char *column_names = shash_find_data(&ctx->options, "--columns");
+ const struct ovsdb_idl_column **columns;
+ const char *table_name = ctx->argv[1];
+ const struct vsctl_table_class *table;
+ struct table *out;
+ size_t n_columns;
+ int i;
+
+ table = get_table(table_name);
+ parse_column_names(column_names, table, &columns, &n_columns);
+ out = ctx->table = list_make_table(columns, n_columns);
+ if (ctx->argc > 2) {
+ for (i = 2; i < ctx->argc; i++) {
+ list_record(must_get_row(ctx, table, ctx->argv[i]),
+ columns, n_columns, out);
+ }
+ } else {
+ const struct ovsdb_idl_row *row;
+
+ for (row = ovsdb_idl_first_row(ctx->idl, table->class); row != NULL;
+ row = ovsdb_idl_next_row(row)) {
+ list_record(row, columns, n_columns, out);
+ }
+ }
+ free(columns);
+}
+
+static void
+pre_cmd_find(struct vsctl_context *ctx)
+{
+ const char *column_names = shash_find_data(&ctx->options, "--columns");
+ const char *table_name = ctx->argv[1];
+ const struct vsctl_table_class *table;
+ int i;
+
+ table = pre_get_table(ctx, table_name);
+ pre_list_columns(ctx, table, column_names);
+ for (i = 2; i < ctx->argc; i++) {
+ pre_parse_column_key_value(ctx, ctx->argv[i], table);
+ }
+}
+
+static void
+cmd_find(struct vsctl_context *ctx)
+{
+ const char *column_names = shash_find_data(&ctx->options, "--columns");
+ const struct ovsdb_idl_column **columns;
+ const char *table_name = ctx->argv[1];
+ const struct vsctl_table_class *table;
+ const struct ovsdb_idl_row *row;
+ struct table *out;
+ size_t n_columns;
+
+ table = get_table(table_name);
+ parse_column_names(column_names, table, &columns, &n_columns);
+ out = ctx->table = list_make_table(columns, n_columns);
+ for (row = ovsdb_idl_first_row(ctx->idl, table->class); row;
+ row = ovsdb_idl_next_row(row)) {
+ int i;
+
+ for (i = 2; i < ctx->argc; i++) {
+ if (!is_condition_satisfied(table, row, ctx->argv[i],
+ ctx->symtab)) {
+ goto next_row;
+ }
+ }
+ list_record(row, columns, n_columns, out);
+
+ next_row: ;
+ }
+ free(columns);
+}
+
+static void
+pre_cmd_set(struct vsctl_context *ctx)
+{
+ const char *table_name = ctx->argv[1];
+ const struct vsctl_table_class *table;
+ int i;
+
+ table = pre_get_table(ctx, table_name);
+ for (i = 3; i < ctx->argc; i++) {
+ pre_parse_column_key_value(ctx, ctx->argv[i], table);
+ }
+}
+
+static void
+set_column(const struct vsctl_table_class *table,
+ const struct ovsdb_idl_row *row, const char *arg,
+ struct ovsdb_symbol_table *symtab)
+{
+ const struct ovsdb_idl_column *column;
+ char *key_string, *value_string;
+ char *error;
+
+ error = parse_column_key_value(arg, table, &column, &key_string,
+ NULL, NULL, 0, &value_string);
+ die_if_error(error);
+ if (!value_string) {
+ vsctl_fatal("%s: missing value", arg);
+ }
+
+ if (key_string) {
+ union ovsdb_atom key, value;
+ struct ovsdb_datum datum;
+
+ if (column->type.value.type == OVSDB_TYPE_VOID) {
+ vsctl_fatal("cannot specify key to set for non-map column %s",
+ column->name);
+ }
+
+ die_if_error(ovsdb_atom_from_string(&key, &column->type.key,
+ key_string, symtab));
+ die_if_error(ovsdb_atom_from_string(&value, &column->type.value,
+ value_string, symtab));
+
+ ovsdb_datum_init_empty(&datum);
+ ovsdb_datum_add_unsafe(&datum, &key, &value, &column->type);
+
+ ovsdb_atom_destroy(&key, column->type.key.type);
+ ovsdb_atom_destroy(&value, column->type.value.type);
+
+ ovsdb_datum_union(&datum, ovsdb_idl_read(row, column),
+ &column->type, false);
+ ovsdb_idl_txn_write(row, column, &datum);
+ } else {
+ struct ovsdb_datum datum;
+
+ die_if_error(ovsdb_datum_from_string(&datum, &column->type,
+ value_string, symtab));
+ ovsdb_idl_txn_write(row, column, &datum);
+ }
+
+ free(key_string);
+ free(value_string);
+}
+
+static void
+cmd_set(struct vsctl_context *ctx)
+{
+ const char *table_name = ctx->argv[1];
+ const char *record_id = ctx->argv[2];
+ const struct vsctl_table_class *table;
+ const struct ovsdb_idl_row *row;
+ int i;
+
+ table = get_table(table_name);
+ row = must_get_row(ctx, table, record_id);
+ for (i = 3; i < ctx->argc; i++) {
+ set_column(table, row, ctx->argv[i], ctx->symtab);
+ }
+}
+
+static void
+pre_cmd_add(struct vsctl_context *ctx)
+{
+ const char *table_name = ctx->argv[1];
+ const char *column_name = ctx->argv[3];
+ const struct vsctl_table_class *table;
+ const struct ovsdb_idl_column *column;
+
+ table = pre_get_table(ctx, table_name);
+ pre_get_column(ctx, table, column_name, &column);
+}
+
+static void
+cmd_add(struct vsctl_context *ctx)
+{
+ const char *table_name = ctx->argv[1];
+ const char *record_id = ctx->argv[2];
+ const char *column_name = ctx->argv[3];
+ const struct vsctl_table_class *table;
+ const struct ovsdb_idl_column *column;
+ const struct ovsdb_idl_row *row;
+ const struct ovsdb_type *type;
+ struct ovsdb_datum old;
+ int i;
+
+ table = get_table(table_name);
+ row = must_get_row(ctx, table, record_id);
+ die_if_error(get_column(table, column_name, &column));
+
+ type = &column->type;
+ ovsdb_datum_clone(&old, ovsdb_idl_read(row, column), &column->type);
+ for (i = 4; i < ctx->argc; i++) {
+ struct ovsdb_type add_type;
+ struct ovsdb_datum add;
+
+ add_type = *type;
+ add_type.n_min = 1;
+ add_type.n_max = UINT_MAX;
+ die_if_error(ovsdb_datum_from_string(&add, &add_type, ctx->argv[i],
+ ctx->symtab));
+ ovsdb_datum_union(&old, &add, type, false);
+ ovsdb_datum_destroy(&add, type);
+ }
+ if (old.n > type->n_max) {
+ vsctl_fatal("\"add\" operation would put %u %s in column %s of "
+ "table %s but the maximum number is %u",
+ old.n,
+ type->value.type == OVSDB_TYPE_VOID ? "values" : "pairs",
+ column->name, table->class->name, type->n_max);
+ }
+ ovsdb_idl_txn_verify(row, column);
+ ovsdb_idl_txn_write(row, column, &old);
+}
+
+static void
+pre_cmd_remove(struct vsctl_context *ctx)
+{
+ const char *table_name = ctx->argv[1];
+ const char *column_name = ctx->argv[3];
+ const struct vsctl_table_class *table;
+ const struct ovsdb_idl_column *column;
+
+ table = pre_get_table(ctx, table_name);
+ pre_get_column(ctx, table, column_name, &column);
+}
+
+static void
+cmd_remove(struct vsctl_context *ctx)
+{
+ const char *table_name = ctx->argv[1];
+ const char *record_id = ctx->argv[2];
+ const char *column_name = ctx->argv[3];
+ const struct vsctl_table_class *table;
+ const struct ovsdb_idl_column *column;
+ const struct ovsdb_idl_row *row;
+ const struct ovsdb_type *type;
+ struct ovsdb_datum old;
+ int i;
+
+ table = get_table(table_name);
+ row = must_get_row(ctx, table, record_id);
+ die_if_error(get_column(table, column_name, &column));
+
+ type = &column->type;
+ ovsdb_datum_clone(&old, ovsdb_idl_read(row, column), &column->type);
+ for (i = 4; i < ctx->argc; i++) {
+ struct ovsdb_type rm_type;
+ struct ovsdb_datum rm;
+ char *error;
+
+ rm_type = *type;
+ rm_type.n_min = 1;
+ rm_type.n_max = UINT_MAX;
+ error = ovsdb_datum_from_string(&rm, &rm_type,
+ ctx->argv[i], ctx->symtab);
+ if (error && ovsdb_type_is_map(&rm_type)) {
+ free(error);
+ rm_type.value.type = OVSDB_TYPE_VOID;
+ die_if_error(ovsdb_datum_from_string(&rm, &rm_type,
+ ctx->argv[i], ctx->symtab));
+ }
+ ovsdb_datum_subtract(&old, type, &rm, &rm_type);
+ ovsdb_datum_destroy(&rm, &rm_type);
+ }
+ if (old.n < type->n_min) {
+ vsctl_fatal("\"remove\" operation would put %u %s in column %s of "
+ "table %s but the minimum number is %u",
+ old.n,
+ type->value.type == OVSDB_TYPE_VOID ? "values" : "pairs",
+ column->name, table->class->name, type->n_min);
+ }
+ ovsdb_idl_txn_verify(row, column);
+ ovsdb_idl_txn_write(row, column, &old);
+}
+
+static void
+pre_cmd_clear(struct vsctl_context *ctx)
+{
+ const char *table_name = ctx->argv[1];
+ const struct vsctl_table_class *table;
+ int i;
+
+ table = pre_get_table(ctx, table_name);
+ for (i = 3; i < ctx->argc; i++) {
+ const struct ovsdb_idl_column *column;
+
+ pre_get_column(ctx, table, ctx->argv[i], &column);
+ }
+}
+
+static void
+cmd_clear(struct vsctl_context *ctx)
+{
+ const char *table_name = ctx->argv[1];
+ const char *record_id = ctx->argv[2];
+ const struct vsctl_table_class *table;
+ const struct ovsdb_idl_row *row;
+ int i;
+
+ table = get_table(table_name);
+ row = must_get_row(ctx, table, record_id);
+ for (i = 3; i < ctx->argc; i++) {
+ const struct ovsdb_idl_column *column;
+ const struct ovsdb_type *type;
+ struct ovsdb_datum datum;
+
+ die_if_error(get_column(table, ctx->argv[i], &column));
+
+ type = &column->type;
+ if (type->n_min > 0) {
+ vsctl_fatal("\"clear\" operation cannot be applied to column %s "
+ "of table %s, which is not allowed to be empty",
+ column->name, table->class->name);
+ }
+
+ ovsdb_datum_init_empty(&datum);
+ ovsdb_idl_txn_write(row, column, &datum);
+ }
+}
+
+static void
+pre_create(struct vsctl_context *ctx)
+{
+ const char *id = shash_find_data(&ctx->options, "--id");
+ const char *table_name = ctx->argv[1];
+ const struct vsctl_table_class *table;
+
+ table = get_table(table_name);
+ if (!id && !table->class->is_root) {
+ VLOG_WARN("applying \"create\" command to table %s without --id "
+ "option will have no effect", table->class->name);
+ }
+}
+
+static void
+cmd_create(struct vsctl_context *ctx)
+{
+ const char *id = shash_find_data(&ctx->options, "--id");
+ const char *table_name = ctx->argv[1];
+ const struct vsctl_table_class *table = get_table(table_name);
+ const struct ovsdb_idl_row *row;
+ const struct uuid *uuid;
+ int i;
+
+ if (id) {
+ struct ovsdb_symbol *symbol = create_symbol(ctx->symtab, id, NULL);
+ if (table->class->is_root) {
+ /* This table is in the root set, meaning that rows created in it
+ * won't disappear even if they are unreferenced, so disable
+ * warnings about that by pretending that there is a reference. */
+ symbol->strong_ref = true;
+ }
+ uuid = &symbol->uuid;
+ } else {
+ uuid = NULL;
+ }
+
+ row = ovsdb_idl_txn_insert(ctx->txn, table->class, uuid);
+ for (i = 2; i < ctx->argc; i++) {
+ set_column(table, row, ctx->argv[i], ctx->symtab);
+ }
+ ds_put_format(&ctx->output, UUID_FMT, UUID_ARGS(&row->uuid));
+}
+
+/* This function may be used as the 'postprocess' function for commands that
+ * insert new rows into the database. It expects that the command's 'run'
+ * function prints the UUID reported by ovsdb_idl_txn_insert() as the command's
+ * sole output. It replaces that output by the row's permanent UUID assigned
+ * by the database server and appends a new-line.
+ *
+ * Currently we use this only for "create", because the higher-level commands
+ * are supposed to be independent of the actual structure of the vswitch
+ * configuration. */
+static void
+post_create(struct vsctl_context *ctx)
+{
+ const struct uuid *real;
+ struct uuid dummy;
+
+ if (!uuid_from_string(&dummy, ds_cstr(&ctx->output))) {
+ NOT_REACHED();
+ }
+ real = ovsdb_idl_txn_get_insert_uuid(ctx->txn, &dummy);
+ if (real) {
+ ds_clear(&ctx->output);
+ ds_put_format(&ctx->output, UUID_FMT, UUID_ARGS(real));
+ }
+ ds_put_char(&ctx->output, '\n');
+}
+
+static void
+pre_cmd_destroy(struct vsctl_context *ctx)
+{
+ const char *table_name = ctx->argv[1];
+
+ pre_get_table(ctx, table_name);
+}
+
+static void
+cmd_destroy(struct vsctl_context *ctx)
+{
+ bool must_exist = !shash_find(&ctx->options, "--if-exists");
+ const char *table_name = ctx->argv[1];
+ const struct vsctl_table_class *table;
+ int i;
+
+ table = get_table(table_name);
+ for (i = 2; i < ctx->argc; i++) {
+ const struct ovsdb_idl_row *row;
+
+ row = (must_exist ? must_get_row : get_row)(ctx, table, ctx->argv[i]);
+ if (row) {
+ ovsdb_idl_txn_delete(row);
+ }
+ }
+}
+
+static bool
+is_condition_satisfied(const struct vsctl_table_class *table,
+ const struct ovsdb_idl_row *row, const char *arg,
+ struct ovsdb_symbol_table *symtab)
+{
+ static const char *operators[] = {
+ "=", "!=", "<", ">", "<=", ">="
+ };
+
+ const struct ovsdb_idl_column *column;
+ const struct ovsdb_datum *have_datum;
+ char *key_string, *value_string;
+ const char *operator;
+ unsigned int idx;
+ char *error;
+ int cmp = 0;
+
+ error = parse_column_key_value(arg, table, &column, &key_string,
+ &operator, operators, ARRAY_SIZE(operators),
+ &value_string);
+ die_if_error(error);
+ if (!value_string) {
+ vsctl_fatal("%s: missing value", arg);
+ }
+
+ have_datum = ovsdb_idl_read(row, column);
+ if (key_string) {
+ union ovsdb_atom want_key, want_value;
+
+ if (column->type.value.type == OVSDB_TYPE_VOID) {
+ vsctl_fatal("cannot specify key to check for non-map column %s",
+ column->name);
+ }
+
+ die_if_error(ovsdb_atom_from_string(&want_key, &column->type.key,
+ key_string, symtab));
+ die_if_error(ovsdb_atom_from_string(&want_value, &column->type.value,
+ value_string, symtab));
+
+ idx = ovsdb_datum_find_key(have_datum,
+ &want_key, column->type.key.type);
+ if (idx != UINT_MAX) {
+ cmp = ovsdb_atom_compare_3way(&have_datum->values[idx],
+ &want_value,
+ column->type.value.type);
+ }
+
+ ovsdb_atom_destroy(&want_key, column->type.key.type);
+ ovsdb_atom_destroy(&want_value, column->type.value.type);
+ } else {
+ struct ovsdb_datum want_datum;
+
+ die_if_error(ovsdb_datum_from_string(&want_datum, &column->type,
+ value_string, symtab));
+ idx = 0;
+ cmp = ovsdb_datum_compare_3way(have_datum, &want_datum,
+ &column->type);
+ ovsdb_datum_destroy(&want_datum, &column->type);
+ }
+
+ free(key_string);
+ free(value_string);
+
+ return (idx == UINT_MAX ? false
+ : !strcmp(operator, "=") ? cmp == 0
+ : !strcmp(operator, "!=") ? cmp != 0
+ : !strcmp(operator, "<") ? cmp < 0
+ : !strcmp(operator, ">") ? cmp > 0
+ : !strcmp(operator, "<=") ? cmp <= 0
+ : !strcmp(operator, ">=") ? cmp >= 0
+ : (abort(), 0));
+}
+
+static void
+pre_cmd_wait_until(struct vsctl_context *ctx)
+{
+ const char *table_name = ctx->argv[1];
+ const struct vsctl_table_class *table;
+ int i;
+
+ table = pre_get_table(ctx, table_name);
+
+ for (i = 3; i < ctx->argc; i++) {
+ pre_parse_column_key_value(ctx, ctx->argv[i], table);
+ }
+}
+
+static void
+cmd_wait_until(struct vsctl_context *ctx)
+{
+ const char *table_name = ctx->argv[1];
+ const char *record_id = ctx->argv[2];
+ const struct vsctl_table_class *table;
+ const struct ovsdb_idl_row *row;
+ int i;
+
+ table = get_table(table_name);
+
+ row = get_row(ctx, table, record_id);
+ if (!row) {
+ ctx->try_again = true;
+ return;
+ }
+
+ for (i = 3; i < ctx->argc; i++) {
+ if (!is_condition_satisfied(table, row, ctx->argv[i], ctx->symtab)) {
+ ctx->try_again = true;
+ return;
+ }
+ }
+}
+\f
+static struct json *
+where_uuid_equals(const struct uuid *uuid)
+{
+ return
+ json_array_create_1(
+ json_array_create_3(
+ json_string_create("_uuid"),
+ json_string_create("=="),
+ json_array_create_2(
+ json_string_create("uuid"),
+ json_string_create_nocopy(
+ xasprintf(UUID_FMT, UUID_ARGS(uuid))))));
+}
+
+static void
+vsctl_context_init(struct vsctl_context *ctx, struct vsctl_command *command,
+ struct ovsdb_idl *idl, struct ovsdb_idl_txn *txn,
+ const struct ovsrec_open_vswitch *ovs,
+ struct ovsdb_symbol_table *symtab)
+{
+ ctx->argc = command->argc;
+ ctx->argv = command->argv;
+ ctx->options = command->options;
+
+ ds_swap(&ctx->output, &command->output);
+ ctx->table = command->table;
+ ctx->idl = idl;
+ ctx->txn = txn;
+ ctx->ovs = ovs;
+ ctx->symtab = symtab;
+ ctx->verified_ports = false;
+
+ ctx->try_again = false;
+}
+
+static void
+vsctl_context_done(struct vsctl_context *ctx, struct vsctl_command *command)
+{
+ ds_swap(&ctx->output, &command->output);
+ command->table = ctx->table;
+}
+
+static void
+run_prerequisites(struct vsctl_command *commands, size_t n_commands,
+ struct ovsdb_idl *idl)
+{
+ struct vsctl_command *c;
+
+ ovsdb_idl_add_table(idl, &ovsrec_table_open_vswitch);
+ if (wait_for_reload) {
+ ovsdb_idl_add_column(idl, &ovsrec_open_vswitch_col_cur_cfg);
+ }
+ for (c = commands; c < &commands[n_commands]; c++) {
+ if (c->syntax->prerequisites) {
+ struct vsctl_context ctx;
+
+ ds_init(&c->output);
+ c->table = NULL;
+
+ vsctl_context_init(&ctx, c, idl, NULL, NULL, NULL);
+ (c->syntax->prerequisites)(&ctx);
+ vsctl_context_done(&ctx, c);
+
+ assert(!c->output.string);
+ assert(!c->table);
+ }
+ }
+}
+
+static void
+do_vsctl(const char *args, struct vsctl_command *commands, size_t n_commands,
+ struct ovsdb_idl *idl)
+{
+ struct ovsdb_idl_txn *txn;
+ const struct ovsrec_open_vswitch *ovs;
+ enum ovsdb_idl_txn_status status;
+ struct ovsdb_symbol_table *symtab;
+ struct vsctl_command *c;
+ struct shash_node *node;
+ int64_t next_cfg = 0;
+ char *error = NULL;
+
+ txn = the_idl_txn = ovsdb_idl_txn_create(idl);
+ if (dry_run) {
+ ovsdb_idl_txn_set_dry_run(txn);
+ }
+
+ ovsdb_idl_txn_add_comment(txn, "ovs-vsctl: %s", args);
+
+ ovs = ovsrec_open_vswitch_first(idl);
+ if (!ovs) {
+ /* XXX add verification that table is empty */
+ ovs = ovsrec_open_vswitch_insert(txn);
+ }
+
+ if (wait_for_reload) {
+ struct json *where = where_uuid_equals(&ovs->header_.uuid);
+ ovsdb_idl_txn_increment(txn, "Open_vSwitch", "next_cfg", where);
+ json_destroy(where);
+ }
+
+ symtab = ovsdb_symbol_table_create();
+ for (c = commands; c < &commands[n_commands]; c++) {
+ ds_init(&c->output);
+ c->table = NULL;
+ }
+ for (c = commands; c < &commands[n_commands]; c++) {
+ struct vsctl_context ctx;
+
+ vsctl_context_init(&ctx, c, idl, txn, ovs, symtab);
+ (c->syntax->run)(&ctx);
+ vsctl_context_done(&ctx, c);
+
+ if (ctx.try_again) {
+ goto try_again;
+ }
+ }
+
+ SHASH_FOR_EACH (node, &symtab->sh) {
+ struct ovsdb_symbol *symbol = node->data;
+ if (!symbol->created) {
+ vsctl_fatal("row id \"%s\" is referenced but never created (e.g. "
+ "with \"-- --id=%s create ...\")",
+ node->name, node->name);
+ }
+ if (!symbol->strong_ref) {
+ if (!symbol->weak_ref) {
+ VLOG_WARN("row id \"%s\" was created but no reference to it "
+ "was inserted, so it will not actually appear in "
+ "the database", node->name);
+ } else {
+ VLOG_WARN("row id \"%s\" was created but only a weak "
+ "reference to it was inserted, so it will not "
+ "actually appear in the database", node->name);
+ }
+ }
+ }
+
+ status = ovsdb_idl_txn_commit_block(txn);