2 * Copyright (c) 2015 Nicira, Inc.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at:
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
23 #include "db-ctl-base.h"
25 #include "command-line.h"
28 #include "dynamic-string.h"
29 #include "fatal-signal.h"
32 #include "openvswitch/vlog.h"
33 #include "ovsdb-data.h"
34 #include "ovsdb-idl.h"
35 #include "ovsdb-idl-provider.h"
41 VLOG_DEFINE_THIS_MODULE(db_ctl_base);
43 /* The IDL we're using and the current transaction, if any.
44 * This is for use by ctl_exit() only, to allow it to clean up.
45 * Other code should use its context arguments. */
46 struct ovsdb_idl *the_idl;
47 struct ovsdb_idl_txn *the_idl_txn;
49 /* Represents all tables in the schema. User must define 'tables'
50 * in implementation and supply via clt_init(). The definition must end
51 * with an all-NULL entry. */
52 static const struct ctl_table_class *tables;
54 static struct shash all_commands = SHASH_INITIALIZER(&all_commands);
55 static const struct ctl_table_class *get_table(const char *table_name);
56 static void set_column(const struct ctl_table_class *,
57 const struct ovsdb_idl_row *, const char *,
58 struct ovsdb_symbol_table *);
61 static struct option *
62 find_option(const char *name, struct option *options, size_t n_options)
66 for (i = 0; i < n_options; i++) {
67 if (!strcmp(options[i].name, name)) {
74 static struct option *
75 add_option(struct option **optionsp, size_t *n_optionsp,
76 size_t *allocated_optionsp)
78 if (*n_optionsp >= *allocated_optionsp) {
79 *optionsp = x2nrealloc(*optionsp, allocated_optionsp,
82 return &(*optionsp)[(*n_optionsp)++];
85 /* Converts the command arguments into format that can be parsed by
86 * bash completion script.
88 * Therein, arguments will be attached with following prefixes:
90 * !argument :: The argument is required
91 * ?argument :: The argument is optional
92 * *argument :: The argument may appear any number (0 or more) times
93 * +argument :: The argument may appear one or more times
97 print_command_arguments(const struct ctl_command_syntax *command)
100 * The argument string is parsed in reverse. We use a stack 'oew_stack' to
101 * keep track of nested optionals. Whenever a ']' is encountered, we push
102 * a bit to 'oew_stack'. The bit is set to 1 if the ']' is not nested.
103 * Subsequently, we pop an entry everytime '[' is met.
105 * We use 'whole_word_is_optional' value to decide whether or not a ! or +
106 * should be added on encountering a space: if the optional surrounds the
107 * whole word then it shouldn't be, but if it is only a part of the word
108 * (i.e. [key=]value), it should be.
110 uint32_t oew_stack = 0;
112 const char *arguments = command->arguments;
113 int length = strlen(arguments);
118 /* Output buffer, written backward from end. */
119 char *output = xmalloc(2 * length);
120 char *outp = output + 2 * length;
123 bool in_repeated = false;
124 bool whole_word_is_optional = false;
126 for (const char *inp = arguments + length; inp > arguments; ) {
130 if (inp[1] == '\0' || inp[1] == ' ' || inp[1] == '.') {
135 /* Checks if the whole word is optional, and sets the
136 * 'whole_word_is_optional' accordingly. */
137 if ((inp == arguments || inp[-1] == ' ') && oew_stack & 1) {
138 *--outp = in_repeated ? '*' : '?';
139 whole_word_is_optional = true;
142 whole_word_is_optional = false;
147 if (!whole_word_is_optional) {
148 *--outp = in_repeated ? '+' : '!';
152 whole_word_is_optional = false;
162 if (arguments[0] != '[' && outp != output + 2 * length - 1) {
163 *--outp = in_repeated ? '+' : '!';
170 die_if_error(char *error)
173 ctl_fatal("%s", error);
178 to_lower_and_underscores(unsigned c)
180 return c == '-' ? '_' : tolower(c);
184 score_partial_match(const char *name, const char *s)
188 if (!strcmp(name, s)) {
191 for (score = 0; ; score++, name++, s++) {
192 if (to_lower_and_underscores(*name) != to_lower_and_underscores(*s)) {
194 } else if (*name == '\0') {
198 return *s == '\0' ? score : 0;
201 static struct ovsdb_symbol *
202 create_symbol(struct ovsdb_symbol_table *symtab, const char *id, bool *newp)
204 struct ovsdb_symbol *symbol;
207 ctl_fatal("row id \"%s\" does not begin with \"@\"", id);
211 *newp = ovsdb_symbol_table_get(symtab, id) == NULL;
214 symbol = ovsdb_symbol_table_insert(symtab, id);
215 if (symbol->created) {
216 ctl_fatal("row id \"%s\" may only be specified on one --id option",
219 symbol->created = true;
223 static const struct ovsdb_idl_row *
224 get_row_by_id(struct ctl_context *ctx, const struct ctl_table_class *table,
225 const struct ctl_row_id *id, const char *record_id)
227 const struct ovsdb_idl_row *referrer, *final;
233 if (!id->name_column) {
234 if (strcmp(record_id, ".")) {
237 referrer = ovsdb_idl_first_row(ctx->idl, id->table);
238 if (!referrer || ovsdb_idl_next_row(referrer)) {
242 const struct ovsdb_idl_row *row;
245 for (row = ovsdb_idl_first_row(ctx->idl, id->table);
247 row = ovsdb_idl_next_row(row))
249 const struct ovsdb_datum *name;
251 name = ovsdb_idl_get(row, id->name_column,
252 OVSDB_TYPE_STRING, OVSDB_TYPE_VOID);
253 if (name->n == 1 && !strcmp(name->keys[0].string, record_id)) {
255 ctl_fatal("multiple rows in %s match \"%s\"",
256 table->class->name, record_id);
267 if (id->uuid_column) {
268 const struct ovsdb_datum *uuid;
270 ovsdb_idl_txn_verify(referrer, id->uuid_column);
271 uuid = ovsdb_idl_get(referrer, id->uuid_column,
272 OVSDB_TYPE_UUID, OVSDB_TYPE_VOID);
274 final = ovsdb_idl_get_row_for_uuid(ctx->idl, table->class,
275 &uuid->keys[0].uuid);
284 static const struct ovsdb_idl_row *
285 get_row(struct ctl_context *ctx,
286 const struct ctl_table_class *table, const char *record_id,
289 const struct ovsdb_idl_row *row;
293 if (uuid_from_string(&uuid, record_id)) {
294 row = ovsdb_idl_get_row_for_uuid(ctx->idl, table->class, &uuid);
299 for (i = 0; i < ARRAY_SIZE(table->row_ids); i++) {
300 row = get_row_by_id(ctx, table, &table->row_ids[i], record_id);
306 if (must_exist && !row) {
307 ctl_fatal("no row \"%s\" in table %s",
308 record_id, table->class->name);
314 get_column(const struct ctl_table_class *table, const char *column_name,
315 const struct ovsdb_idl_column **columnp)
317 const struct ovsdb_idl_column *best_match = NULL;
318 unsigned int best_score = 0;
321 for (i = 0; i < table->class->n_columns; i++) {
322 const struct ovsdb_idl_column *column = &table->class->columns[i];
323 unsigned int score = score_partial_match(column->name, column_name);
324 if (score > best_score) {
327 } else if (score == best_score) {
332 *columnp = best_match;
335 } else if (best_score) {
336 return xasprintf("%s contains more than one column whose name "
337 "matches \"%s\"", table->class->name, column_name);
339 return xasprintf("%s does not contain a column whose name matches "
340 "\"%s\"", table->class->name, column_name);
345 pre_get_column(struct ctl_context *ctx,
346 const struct ctl_table_class *table, const char *column_name,
347 const struct ovsdb_idl_column **columnp)
349 die_if_error(get_column(table, column_name, columnp));
350 ovsdb_idl_add_column(ctx->idl, *columnp);
353 static const struct ctl_table_class *
354 pre_get_table(struct ctl_context *ctx, const char *table_name)
356 const struct ctl_table_class *table_class;
359 table_class = get_table(table_name);
360 ovsdb_idl_add_table(ctx->idl, table_class->class);
362 for (i = 0; i < ARRAY_SIZE(table_class->row_ids); i++) {
363 const struct ctl_row_id *id = &table_class->row_ids[i];
365 ovsdb_idl_add_table(ctx->idl, id->table);
367 if (id->name_column) {
368 ovsdb_idl_add_column(ctx->idl, id->name_column);
370 if (id->uuid_column) {
371 ovsdb_idl_add_column(ctx->idl, id->uuid_column);
379 missing_operator_error(const char *arg, const char **allowed_operators,
385 ds_put_format(&s, "%s: argument does not end in ", arg);
386 ds_put_format(&s, "\"%s\"", allowed_operators[0]);
387 if (n_allowed == 2) {
388 ds_put_format(&s, " or \"%s\"", allowed_operators[1]);
389 } else if (n_allowed > 2) {
392 for (i = 1; i < n_allowed - 1; i++) {
393 ds_put_format(&s, ", \"%s\"", allowed_operators[i]);
395 ds_put_format(&s, ", or \"%s\"", allowed_operators[i]);
397 ds_put_format(&s, " followed by a value.");
399 return ds_steal_cstr(&s);
402 /* Breaks 'arg' apart into a number of fields in the following order:
404 * - The name of a column in 'table', stored into '*columnp'. The column
405 * name may be abbreviated.
407 * - Optionally ':' followed by a key string. The key is stored as a
408 * malloc()'d string into '*keyp', or NULL if no key is present in
411 * - If 'valuep' is nonnull, an operator followed by a value string. The
412 * allowed operators are the 'n_allowed' string in 'allowed_operators',
413 * or just "=" if 'n_allowed' is 0. If 'operatorp' is nonnull, then the
414 * index of the operator within 'allowed_operators' is stored into
415 * '*operatorp'. The value is stored as a malloc()'d string into
416 * '*valuep', or NULL if no value is present in 'arg'.
418 * On success, returns NULL. On failure, returned a malloc()'d string error
419 * message and stores NULL into all of the nonnull output arguments. */
420 static char * OVS_WARN_UNUSED_RESULT
421 parse_column_key_value(const char *arg,
422 const struct ctl_table_class *table,
423 const struct ovsdb_idl_column **columnp, char **keyp,
425 const char **allowed_operators, size_t n_allowed,
432 ovs_assert(!(operatorp && !valuep));
438 /* Parse column name. */
439 error = ovsdb_token_parse(&p, &column_name);
443 if (column_name[0] == '\0') {
445 error = xasprintf("%s: missing column name", arg);
448 error = get_column(table, column_name, columnp);
454 /* Parse key string. */
457 error = ovsdb_token_parse(&p, keyp);
463 /* Parse value string. */
469 if (!allowed_operators) {
470 static const char *equals = "=";
471 allowed_operators = =
477 for (i = 0; i < n_allowed; i++) {
478 const char *op = allowed_operators[i];
479 size_t op_len = strlen(op);
481 if (op_len > best_len && !strncmp(op, p, op_len) && p[op_len]) {
487 error = missing_operator_error(arg, allowed_operators, n_allowed);
494 *valuep = xstrdup(p + best_len);
497 error = xasprintf("%s: trailing garbage \"%s\" in argument",
518 static const struct ovsdb_idl_column *
519 pre_parse_column_key_value(struct ctl_context *ctx,
521 const struct ctl_table_class *table)
523 const struct ovsdb_idl_column *column;
528 die_if_error(ovsdb_token_parse(&p, &column_name));
529 if (column_name[0] == '\0') {
530 ctl_fatal("%s: missing column name", arg);
533 pre_get_column(ctx, table, column_name, &column);
540 check_mutable(const struct ovsdb_idl_row *row,
541 const struct ovsdb_idl_column *column)
543 if (!ovsdb_idl_is_mutable(row, column)) {
544 ctl_fatal("cannot modify read-only column %s in table %s",
545 column->name, row->table->class->name);
550 RELOP(RELOP_EQ, "=") \
551 RELOP(RELOP_NE, "!=") \
552 RELOP(RELOP_LT, "<") \
553 RELOP(RELOP_GT, ">") \
554 RELOP(RELOP_LE, "<=") \
555 RELOP(RELOP_GE, ">=") \
556 RELOP(RELOP_SET_EQ, "{=}") \
557 RELOP(RELOP_SET_NE, "{!=}") \
558 RELOP(RELOP_SET_LT, "{<}") \
559 RELOP(RELOP_SET_GT, "{>}") \
560 RELOP(RELOP_SET_LE, "{<=}") \
561 RELOP(RELOP_SET_GE, "{>=}")
564 #define RELOP(ENUM, STRING) ENUM,
570 is_set_operator(enum relop op)
572 return (op == RELOP_SET_EQ || op == RELOP_SET_NE ||
573 op == RELOP_SET_LT || op == RELOP_SET_GT ||
574 op == RELOP_SET_LE || op == RELOP_SET_GE);
578 evaluate_relop(const struct ovsdb_datum *a, const struct ovsdb_datum *b,
579 const struct ovsdb_type *type, enum relop op)
584 return ovsdb_datum_compare_3way(a, b, type) == 0;
587 return ovsdb_datum_compare_3way(a, b, type) != 0;
589 return ovsdb_datum_compare_3way(a, b, type) < 0;
591 return ovsdb_datum_compare_3way(a, b, type) > 0;
593 return ovsdb_datum_compare_3way(a, b, type) <= 0;
595 return ovsdb_datum_compare_3way(a, b, type) >= 0;
598 return b->n > a->n && ovsdb_datum_includes_all(a, b, type);
600 return a->n > b->n && ovsdb_datum_includes_all(b, a, type);
602 return ovsdb_datum_includes_all(a, b, type);
604 return ovsdb_datum_includes_all(b, a, type);
612 is_condition_satisfied(const struct ctl_table_class *table,
613 const struct ovsdb_idl_row *row, const char *arg,
614 struct ovsdb_symbol_table *symtab)
616 static const char *operators[] = {
617 #define RELOP(ENUM, STRING) STRING,
622 const struct ovsdb_idl_column *column;
623 const struct ovsdb_datum *have_datum;
624 char *key_string, *value_string;
625 struct ovsdb_type type;
630 error = parse_column_key_value(arg, table, &column, &key_string,
631 &operator, operators, ARRAY_SIZE(operators),
635 ctl_fatal("%s: missing value", arg);
639 type.n_max = UINT_MAX;
641 have_datum = ovsdb_idl_read(row, column);
643 union ovsdb_atom want_key;
644 struct ovsdb_datum b;
647 if (column->type.value.type == OVSDB_TYPE_VOID) {
648 ctl_fatal("cannot specify key to check for non-map column %s",
652 die_if_error(ovsdb_atom_from_string(&want_key, &column->type.key,
653 key_string, symtab));
655 type.key = type.value;
656 type.value.type = OVSDB_TYPE_VOID;
657 die_if_error(ovsdb_datum_from_string(&b, &type, value_string, symtab));
659 idx = ovsdb_datum_find_key(have_datum,
660 &want_key, column->type.key.type);
661 if (idx == UINT_MAX && !is_set_operator(operator)) {
664 struct ovsdb_datum a;
666 if (idx != UINT_MAX) {
668 a.keys = &have_datum->values[idx];
676 retval = evaluate_relop(&a, &b, &type, operator);
679 ovsdb_atom_destroy(&want_key, column->type.key.type);
680 ovsdb_datum_destroy(&b, &type);
682 struct ovsdb_datum want_datum;
684 die_if_error(ovsdb_datum_from_string(&want_datum, &column->type,
685 value_string, symtab));
686 retval = evaluate_relop(have_datum, &want_datum, &type, operator);
687 ovsdb_datum_destroy(&want_datum, &column->type);
697 invalidate_cache(struct ctl_context *ctx)
699 if (ctx->invalidate_cache) {
700 (ctx->invalidate_cache)(ctx);
705 pre_cmd_get(struct ctl_context *ctx)
707 const char *id = shash_find_data(&ctx->options, "--id");
708 const char *table_name = ctx->argv[1];
709 const struct ctl_table_class *table;
712 /* Using "get" without --id or a column name could possibly make sense.
713 * Maybe, for example, a *ctl command run wants to assert that a row
714 * exists. But it is unlikely that an interactive user would want to do
715 * that, so issue a warning if we're running on a terminal. */
716 if (!id && ctx->argc <= 3 && isatty(STDOUT_FILENO)) {
717 VLOG_WARN("\"get\" command without row arguments or \"--id\" is "
718 "possibly erroneous");
721 table = pre_get_table(ctx, table_name);
722 for (i = 3; i < ctx->argc; i++) {
723 if (!strcasecmp(ctx->argv[i], "_uuid")
724 || !strcasecmp(ctx->argv[i], "-uuid")) {
728 pre_parse_column_key_value(ctx, ctx->argv[i], table);
733 cmd_get(struct ctl_context *ctx)
735 const char *id = shash_find_data(&ctx->options, "--id");
736 bool must_exist = !shash_find(&ctx->options, "--if-exists");
737 const char *table_name = ctx->argv[1];
738 const char *record_id = ctx->argv[2];
739 const struct ctl_table_class *table;
740 const struct ovsdb_idl_row *row;
741 struct ds *out = &ctx->output;
744 if (id && !must_exist) {
745 ctl_fatal("--if-exists and --id may not be specified together");
748 table = get_table(table_name);
749 row = get_row(ctx, table, record_id, must_exist);
755 struct ovsdb_symbol *symbol;
758 symbol = create_symbol(ctx->symtab, id, &new);
760 ctl_fatal("row id \"%s\" specified on \"get\" command was used "
761 "before it was defined", id);
763 symbol->uuid = row->uuid;
765 /* This symbol refers to a row that already exists, so disable warnings
766 * about it being unreferenced. */
767 symbol->strong_ref = true;
769 for (i = 3; i < ctx->argc; i++) {
770 const struct ovsdb_idl_column *column;
771 const struct ovsdb_datum *datum;
774 /* Special case for obtaining the UUID of a row. We can't just do this
775 * through parse_column_key_value() below since it returns a "struct
776 * ovsdb_idl_column" and the UUID column doesn't have one. */
777 if (!strcasecmp(ctx->argv[i], "_uuid")
778 || !strcasecmp(ctx->argv[i], "-uuid")) {
779 ds_put_format(out, UUID_FMT"\n", UUID_ARGS(&row->uuid));
783 die_if_error(parse_column_key_value(ctx->argv[i], table,
784 &column, &key_string,
785 NULL, NULL, 0, NULL));
787 ovsdb_idl_txn_verify(row, column);
788 datum = ovsdb_idl_read(row, column);
790 union ovsdb_atom key;
793 if (column->type.value.type == OVSDB_TYPE_VOID) {
794 ctl_fatal("cannot specify key to get for non-map column %s",
798 die_if_error(ovsdb_atom_from_string(&key,
800 key_string, ctx->symtab));
802 idx = ovsdb_datum_find_key(datum, &key,
803 column->type.key.type);
804 if (idx == UINT_MAX) {
806 ctl_fatal("no key \"%s\" in %s record \"%s\" column %s",
807 key_string, table->class->name, record_id,
811 ovsdb_atom_to_string(&datum->values[idx],
812 column->type.value.type, out);
814 ovsdb_atom_destroy(&key, column->type.key.type);
816 ovsdb_datum_to_string(datum, &column->type, out);
818 ds_put_char(out, '\n');
825 parse_column_names(const char *column_names,
826 const struct ctl_table_class *table,
827 const struct ovsdb_idl_column ***columnsp,
830 const struct ovsdb_idl_column **columns;
836 n_columns = table->class->n_columns + 1;
837 columns = xmalloc(n_columns * sizeof *columns);
839 for (i = 0; i < table->class->n_columns; i++) {
840 columns[i + 1] = &table->class->columns[i];
843 char *s = xstrdup(column_names);
844 size_t allocated_columns;
845 char *save_ptr = NULL;
849 allocated_columns = n_columns = 0;
850 for (column_name = strtok_r(s, ", ", &save_ptr); column_name;
851 column_name = strtok_r(NULL, ", ", &save_ptr)) {
852 const struct ovsdb_idl_column *column;
854 if (!strcasecmp(column_name, "_uuid")) {
857 die_if_error(get_column(table, column_name, &column));
859 if (n_columns >= allocated_columns) {
860 columns = x2nrealloc(columns, &allocated_columns,
863 columns[n_columns++] = column;
868 ctl_fatal("must specify at least one column name");
872 *n_columnsp = n_columns;
876 pre_list_columns(struct ctl_context *ctx,
877 const struct ctl_table_class *table,
878 const char *column_names)
880 const struct ovsdb_idl_column **columns;
884 parse_column_names(column_names, table, &columns, &n_columns);
885 for (i = 0; i < n_columns; i++) {
887 ovsdb_idl_add_column(ctx->idl, columns[i]);
894 pre_cmd_list(struct ctl_context *ctx)
896 const char *column_names = shash_find_data(&ctx->options, "--columns");
897 const char *table_name = ctx->argv[1];
898 const struct ctl_table_class *table;
900 table = pre_get_table(ctx, table_name);
901 pre_list_columns(ctx, table, column_names);
904 static struct table *
905 list_make_table(const struct ovsdb_idl_column **columns, size_t n_columns)
910 out = xmalloc(sizeof *out);
913 for (i = 0; i < n_columns; i++) {
914 const struct ovsdb_idl_column *column = columns[i];
915 const char *column_name = column ? column->name : "_uuid";
917 table_add_column(out, "%s", column_name);
924 list_record(const struct ovsdb_idl_row *row,
925 const struct ovsdb_idl_column **columns, size_t n_columns,
935 for (i = 0; i < n_columns; i++) {
936 const struct ovsdb_idl_column *column = columns[i];
937 struct cell *cell = table_add_cell(out);
940 struct ovsdb_datum datum;
941 union ovsdb_atom atom;
943 atom.uuid = row->uuid;
949 cell->json = ovsdb_datum_to_json(&datum, &ovsdb_type_uuid);
950 cell->type = &ovsdb_type_uuid;
952 const struct ovsdb_datum *datum = ovsdb_idl_read(row, column);
954 cell->json = ovsdb_datum_to_json(datum, &column->type);
955 cell->type = &column->type;
961 cmd_list(struct ctl_context *ctx)
963 const char *column_names = shash_find_data(&ctx->options, "--columns");
964 bool must_exist = !shash_find(&ctx->options, "--if-exists");
965 const struct ovsdb_idl_column **columns;
966 const char *table_name = ctx->argv[1];
967 const struct ctl_table_class *table;
972 table = get_table(table_name);
973 parse_column_names(column_names, table, &columns, &n_columns);
974 out = ctx->table = list_make_table(columns, n_columns);
976 for (i = 2; i < ctx->argc; i++) {
977 list_record(get_row(ctx, table, ctx->argv[i], must_exist),
978 columns, n_columns, out);
981 const struct ovsdb_idl_row *row;
983 for (row = ovsdb_idl_first_row(ctx->idl, table->class); row != NULL;
984 row = ovsdb_idl_next_row(row)) {
985 list_record(row, columns, n_columns, out);
991 /* Finds and returns the "struct ctl_table_class *" with 'table_name' by
992 * searching the 'tables'. */
993 static const struct ctl_table_class *
994 get_table(const char *table_name)
996 const struct ctl_table_class *table;
997 const struct ctl_table_class *best_match = NULL;
998 unsigned int best_score = 0;
1000 for (table = tables; table->class; table++) {
1001 unsigned int score = score_partial_match(table->class->name,
1003 if (score > best_score) {
1006 } else if (score == best_score) {
1012 } else if (best_score) {
1013 ctl_fatal("multiple table names match \"%s\"", table_name);
1015 ctl_fatal("unknown table \"%s\"", table_name);
1021 pre_cmd_find(struct ctl_context *ctx)
1023 const char *column_names = shash_find_data(&ctx->options, "--columns");
1024 const char *table_name = ctx->argv[1];
1025 const struct ctl_table_class *table;
1028 table = pre_get_table(ctx, table_name);
1029 pre_list_columns(ctx, table, column_names);
1030 for (i = 2; i < ctx->argc; i++) {
1031 pre_parse_column_key_value(ctx, ctx->argv[i], table);
1036 cmd_find(struct ctl_context *ctx)
1038 const char *column_names = shash_find_data(&ctx->options, "--columns");
1039 const struct ovsdb_idl_column **columns;
1040 const char *table_name = ctx->argv[1];
1041 const struct ctl_table_class *table;
1042 const struct ovsdb_idl_row *row;
1046 table = get_table(table_name);
1047 parse_column_names(column_names, table, &columns, &n_columns);
1048 out = ctx->table = list_make_table(columns, n_columns);
1049 for (row = ovsdb_idl_first_row(ctx->idl, table->class); row;
1050 row = ovsdb_idl_next_row(row)) {
1053 for (i = 2; i < ctx->argc; i++) {
1054 if (!is_condition_satisfied(table, row, ctx->argv[i],
1059 list_record(row, columns, n_columns, out);
1066 /* Sets the column of 'row' in 'table'. */
1068 set_column(const struct ctl_table_class *table,
1069 const struct ovsdb_idl_row *row, const char *arg,
1070 struct ovsdb_symbol_table *symtab)
1072 const struct ovsdb_idl_column *column;
1073 char *key_string, *value_string;
1076 error = parse_column_key_value(arg, table, &column, &key_string,
1077 NULL, NULL, 0, &value_string);
1078 die_if_error(error);
1079 if (!value_string) {
1080 ctl_fatal("%s: missing value", arg);
1082 check_mutable(row, column);
1085 union ovsdb_atom key, value;
1086 struct ovsdb_datum datum;
1088 if (column->type.value.type == OVSDB_TYPE_VOID) {
1089 ctl_fatal("cannot specify key to set for non-map column %s",
1093 die_if_error(ovsdb_atom_from_string(&key, &column->type.key,
1094 key_string, symtab));
1095 die_if_error(ovsdb_atom_from_string(&value, &column->type.value,
1096 value_string, symtab));
1098 ovsdb_datum_init_empty(&datum);
1099 ovsdb_datum_add_unsafe(&datum, &key, &value, &column->type);
1101 ovsdb_atom_destroy(&key, column->type.key.type);
1102 ovsdb_atom_destroy(&value, column->type.value.type);
1104 ovsdb_datum_union(&datum, ovsdb_idl_read(row, column),
1105 &column->type, false);
1106 ovsdb_idl_txn_verify(row, column);
1107 ovsdb_idl_txn_write(row, column, &datum);
1109 struct ovsdb_datum datum;
1111 die_if_error(ovsdb_datum_from_string(&datum, &column->type,
1112 value_string, symtab));
1113 ovsdb_idl_txn_write(row, column, &datum);
1121 pre_cmd_set(struct ctl_context *ctx)
1123 const char *table_name = ctx->argv[1];
1124 const struct ctl_table_class *table;
1127 table = pre_get_table(ctx, table_name);
1128 for (i = 3; i < ctx->argc; i++) {
1129 pre_parse_column_key_value(ctx, ctx->argv[i], table);
1134 cmd_set(struct ctl_context *ctx)
1136 bool must_exist = !shash_find(&ctx->options, "--if-exists");
1137 const char *table_name = ctx->argv[1];
1138 const char *record_id = ctx->argv[2];
1139 const struct ctl_table_class *table;
1140 const struct ovsdb_idl_row *row;
1143 table = get_table(table_name);
1144 row = get_row(ctx, table, record_id, must_exist);
1149 for (i = 3; i < ctx->argc; i++) {
1150 set_column(table, row, ctx->argv[i], ctx->symtab);
1153 invalidate_cache(ctx);
1157 pre_cmd_add(struct ctl_context *ctx)
1159 const char *table_name = ctx->argv[1];
1160 const char *column_name = ctx->argv[3];
1161 const struct ctl_table_class *table;
1162 const struct ovsdb_idl_column *column;
1164 table = pre_get_table(ctx, table_name);
1165 pre_get_column(ctx, table, column_name, &column);
1169 cmd_add(struct ctl_context *ctx)
1171 bool must_exist = !shash_find(&ctx->options, "--if-exists");
1172 const char *table_name = ctx->argv[1];
1173 const char *record_id = ctx->argv[2];
1174 const char *column_name = ctx->argv[3];
1175 const struct ctl_table_class *table;
1176 const struct ovsdb_idl_column *column;
1177 const struct ovsdb_idl_row *row;
1178 const struct ovsdb_type *type;
1179 struct ovsdb_datum old;
1182 table = get_table(table_name);
1183 die_if_error(get_column(table, column_name, &column));
1184 row = get_row(ctx, table, record_id, must_exist);
1188 check_mutable(row, column);
1190 type = &column->type;
1191 ovsdb_datum_clone(&old, ovsdb_idl_read(row, column), &column->type);
1192 for (i = 4; i < ctx->argc; i++) {
1193 struct ovsdb_type add_type;
1194 struct ovsdb_datum add;
1198 add_type.n_max = UINT_MAX;
1199 die_if_error(ovsdb_datum_from_string(&add, &add_type, ctx->argv[i],
1201 ovsdb_datum_union(&old, &add, type, false);
1202 ovsdb_datum_destroy(&add, type);
1204 if (old.n > type->n_max) {
1205 ctl_fatal("\"add\" operation would put %u %s in column %s of "
1206 "table %s but the maximum number is %u",
1208 type->value.type == OVSDB_TYPE_VOID ? "values" : "pairs",
1209 column->name, table->class->name, type->n_max);
1211 ovsdb_idl_txn_verify(row, column);
1212 ovsdb_idl_txn_write(row, column, &old);
1214 invalidate_cache(ctx);
1218 pre_cmd_remove(struct ctl_context *ctx)
1220 const char *table_name = ctx->argv[1];
1221 const char *column_name = ctx->argv[3];
1222 const struct ctl_table_class *table;
1223 const struct ovsdb_idl_column *column;
1225 table = pre_get_table(ctx, table_name);
1226 pre_get_column(ctx, table, column_name, &column);
1230 cmd_remove(struct ctl_context *ctx)
1232 bool must_exist = !shash_find(&ctx->options, "--if-exists");
1233 const char *table_name = ctx->argv[1];
1234 const char *record_id = ctx->argv[2];
1235 const char *column_name = ctx->argv[3];
1236 const struct ctl_table_class *table;
1237 const struct ovsdb_idl_column *column;
1238 const struct ovsdb_idl_row *row;
1239 const struct ovsdb_type *type;
1240 struct ovsdb_datum old;
1243 table = get_table(table_name);
1244 die_if_error(get_column(table, column_name, &column));
1245 row = get_row(ctx, table, record_id, must_exist);
1249 check_mutable(row, column);
1251 type = &column->type;
1252 ovsdb_datum_clone(&old, ovsdb_idl_read(row, column), &column->type);
1253 for (i = 4; i < ctx->argc; i++) {
1254 struct ovsdb_type rm_type;
1255 struct ovsdb_datum rm;
1260 rm_type.n_max = UINT_MAX;
1261 error = ovsdb_datum_from_string(&rm, &rm_type,
1262 ctx->argv[i], ctx->symtab);
1265 if (ovsdb_type_is_map(&rm_type)) {
1266 rm_type.value.type = OVSDB_TYPE_VOID;
1268 die_if_error(ovsdb_datum_from_string(
1269 &rm, &rm_type, ctx->argv[i], ctx->symtab));
1271 ctl_fatal("%s", error);
1274 ovsdb_datum_subtract(&old, type, &rm, &rm_type);
1275 ovsdb_datum_destroy(&rm, &rm_type);
1277 if (old.n < type->n_min) {
1278 ctl_fatal("\"remove\" operation would put %u %s in column %s of "
1279 "table %s but the minimum number is %u",
1281 type->value.type == OVSDB_TYPE_VOID ? "values" : "pairs",
1282 column->name, table->class->name, type->n_min);
1284 ovsdb_idl_txn_verify(row, column);
1285 ovsdb_idl_txn_write(row, column, &old);
1287 invalidate_cache(ctx);
1291 pre_cmd_clear(struct ctl_context *ctx)
1293 const char *table_name = ctx->argv[1];
1294 const struct ctl_table_class *table;
1297 table = pre_get_table(ctx, table_name);
1298 for (i = 3; i < ctx->argc; i++) {
1299 const struct ovsdb_idl_column *column;
1301 pre_get_column(ctx, table, ctx->argv[i], &column);
1306 cmd_clear(struct ctl_context *ctx)
1308 bool must_exist = !shash_find(&ctx->options, "--if-exists");
1309 const char *table_name = ctx->argv[1];
1310 const char *record_id = ctx->argv[2];
1311 const struct ctl_table_class *table;
1312 const struct ovsdb_idl_row *row;
1315 table = get_table(table_name);
1316 row = get_row(ctx, table, record_id, must_exist);
1321 for (i = 3; i < ctx->argc; i++) {
1322 const struct ovsdb_idl_column *column;
1323 const struct ovsdb_type *type;
1324 struct ovsdb_datum datum;
1326 die_if_error(get_column(table, ctx->argv[i], &column));
1327 check_mutable(row, column);
1329 type = &column->type;
1330 if (type->n_min > 0) {
1331 ctl_fatal("\"clear\" operation cannot be applied to column %s "
1332 "of table %s, which is not allowed to be empty",
1333 column->name, table->class->name);
1336 ovsdb_datum_init_empty(&datum);
1337 ovsdb_idl_txn_write(row, column, &datum);
1340 invalidate_cache(ctx);
1344 pre_create(struct ctl_context *ctx)
1346 const char *id = shash_find_data(&ctx->options, "--id");
1347 const char *table_name = ctx->argv[1];
1348 const struct ctl_table_class *table;
1350 table = get_table(table_name);
1351 if (!id && !table->class->is_root) {
1352 VLOG_WARN("applying \"create\" command to table %s without --id "
1353 "option will have no effect", table->class->name);
1358 cmd_create(struct ctl_context *ctx)
1360 const char *id = shash_find_data(&ctx->options, "--id");
1361 const char *table_name = ctx->argv[1];
1362 const struct ctl_table_class *table = get_table(table_name);
1363 const struct ovsdb_idl_row *row;
1364 const struct uuid *uuid;
1368 struct ovsdb_symbol *symbol = create_symbol(ctx->symtab, id, NULL);
1369 if (table->class->is_root) {
1370 /* This table is in the root set, meaning that rows created in it
1371 * won't disappear even if they are unreferenced, so disable
1372 * warnings about that by pretending that there is a reference. */
1373 symbol->strong_ref = true;
1375 uuid = &symbol->uuid;
1380 row = ovsdb_idl_txn_insert(ctx->txn, table->class, uuid);
1381 for (i = 2; i < ctx->argc; i++) {
1382 set_column(table, row, ctx->argv[i], ctx->symtab);
1384 ds_put_format(&ctx->output, UUID_FMT, UUID_ARGS(&row->uuid));
1387 /* This function may be used as the 'postprocess' function for commands that
1388 * insert new rows into the database. It expects that the command's 'run'
1389 * function prints the UUID reported by ovsdb_idl_txn_insert() as the command's
1390 * sole output. It replaces that output by the row's permanent UUID assigned
1391 * by the database server and appends a new-line.
1393 * Currently we use this only for "create", because the higher-level commands
1394 * are supposed to be independent of the actual structure of the vswitch
1397 post_create(struct ctl_context *ctx)
1399 const struct uuid *real;
1402 if (!uuid_from_string(&dummy, ds_cstr(&ctx->output))) {
1405 real = ovsdb_idl_txn_get_insert_uuid(ctx->txn, &dummy);
1407 ds_clear(&ctx->output);
1408 ds_put_format(&ctx->output, UUID_FMT, UUID_ARGS(real));
1410 ds_put_char(&ctx->output, '\n');
1414 pre_cmd_destroy(struct ctl_context *ctx)
1416 const char *table_name = ctx->argv[1];
1418 pre_get_table(ctx, table_name);
1422 cmd_destroy(struct ctl_context *ctx)
1424 bool must_exist = !shash_find(&ctx->options, "--if-exists");
1425 bool delete_all = shash_find(&ctx->options, "--all");
1426 const char *table_name = ctx->argv[1];
1427 const struct ctl_table_class *table;
1430 table = get_table(table_name);
1432 if (delete_all && ctx->argc > 2) {
1433 ctl_fatal("--all and records argument should not be specified together");
1436 if (delete_all && !must_exist) {
1437 ctl_fatal("--all and --if-exists should not be specified together");
1441 const struct ovsdb_idl_row *row;
1442 const struct ovsdb_idl_row *next_row;
1444 for (row = ovsdb_idl_first_row(ctx->idl, table->class);
1446 next_row = ovsdb_idl_next_row(row);
1447 ovsdb_idl_txn_delete(row);
1451 for (i = 2; i < ctx->argc; i++) {
1452 const struct ovsdb_idl_row *row;
1454 row = get_row(ctx, table, ctx->argv[i], must_exist);
1456 ovsdb_idl_txn_delete(row);
1460 invalidate_cache(ctx);
1464 pre_cmd_wait_until(struct ctl_context *ctx)
1466 const char *table_name = ctx->argv[1];
1467 const struct ctl_table_class *table;
1470 table = pre_get_table(ctx, table_name);
1472 for (i = 3; i < ctx->argc; i++) {
1473 pre_parse_column_key_value(ctx, ctx->argv[i], table);
1478 cmd_wait_until(struct ctl_context *ctx)
1480 const char *table_name = ctx->argv[1];
1481 const char *record_id = ctx->argv[2];
1482 const struct ctl_table_class *table;
1483 const struct ovsdb_idl_row *row;
1486 table = get_table(table_name);
1488 row = get_row(ctx, table, record_id, false);
1490 ctx->try_again = true;
1494 for (i = 3; i < ctx->argc; i++) {
1495 if (!is_condition_satisfied(table, row, ctx->argv[i], ctx->symtab)) {
1496 ctx->try_again = true;
1502 /* Parses one command. */
1504 parse_command(int argc, char *argv[], struct shash *local_options,
1505 struct ctl_command *command)
1507 const struct ctl_command_syntax *p;
1508 struct shash_node *node;
1512 shash_init(&command->options);
1513 shash_swap(local_options, &command->options);
1514 for (i = 0; i < argc; i++) {
1515 const char *option = argv[i];
1519 if (option[0] != '-') {
1523 equals = strchr(option, '=');
1525 key = xmemdup0(option, equals - option);
1526 value = xstrdup(equals + 1);
1528 key = xstrdup(option);
1532 if (shash_find(&command->options, key)) {
1533 ctl_fatal("'%s' option specified multiple times", argv[i]);
1535 shash_add_nocopy(&command->options, key, value);
1538 ctl_fatal("missing command name (use --help for help)");
1541 p = shash_find_data(&all_commands, argv[i]);
1543 ctl_fatal("unknown command '%s'; use --help for help", argv[i]);
1546 SHASH_FOR_EACH (node, &command->options) {
1547 const char *s = strstr(p->options, node->name);
1548 int end = s ? s[strlen(node->name)] : EOF;
1550 if (end != '=' && end != ',' && end != ' ' && end != '\0') {
1551 ctl_fatal("'%s' command has no '%s' option",
1552 argv[i], node->name);
1554 if ((end == '=') != (node->data != NULL)) {
1556 ctl_fatal("missing argument to '%s' option on '%s' "
1557 "command", node->name, argv[i]);
1559 ctl_fatal("'%s' option on '%s' does not accept an "
1560 "argument", node->name, argv[i]);
1565 n_arg = argc - i - 1;
1566 if (n_arg < p->min_args) {
1567 ctl_fatal("'%s' command requires at least %d arguments",
1568 p->name, p->min_args);
1569 } else if (n_arg > p->max_args) {
1572 for (j = i + 1; j < argc; j++) {
1573 if (argv[j][0] == '-') {
1574 ctl_fatal("'%s' command takes at most %d arguments "
1575 "(note that options must precede command "
1576 "names and follow a \"--\" argument)",
1577 p->name, p->max_args);
1581 ctl_fatal("'%s' command takes at most %d arguments",
1582 p->name, p->max_args);
1585 command->syntax = p;
1586 command->argc = n_arg + 1;
1587 command->argv = &argv[i];
1591 pre_cmd_show(struct ctl_context *ctx)
1593 struct cmd_show_table *show;
1595 for (show = cmd_show_tables; show->table; show++) {
1598 ovsdb_idl_add_table(ctx->idl, show->table);
1599 if (show->name_column) {
1600 ovsdb_idl_add_column(ctx->idl, show->name_column);
1602 for (i = 0; i < ARRAY_SIZE(show->columns); i++) {
1603 const struct ovsdb_idl_column *column = show->columns[i];
1605 ovsdb_idl_add_column(ctx->idl, column);
1611 static struct cmd_show_table *
1612 cmd_show_find_table_by_row(const struct ovsdb_idl_row *row)
1614 struct cmd_show_table *show;
1616 for (show = cmd_show_tables; show->table; show++) {
1617 if (show->table == row->table->class) {
1624 static struct cmd_show_table *
1625 cmd_show_find_table_by_name(const char *name)
1627 struct cmd_show_table *show;
1629 for (show = cmd_show_tables; show->table; show++) {
1630 if (!strcmp(show->table->name, name)) {
1638 cmd_show_row(struct ctl_context *ctx, const struct ovsdb_idl_row *row,
1641 struct cmd_show_table *show = cmd_show_find_table_by_row(row);
1644 ds_put_char_multiple(&ctx->output, ' ', level * 4);
1645 if (show && show->name_column) {
1646 const struct ovsdb_datum *datum;
1648 ds_put_format(&ctx->output, "%s ", show->table->name);
1649 datum = ovsdb_idl_read(row, show->name_column);
1650 ovsdb_datum_to_string(datum, &show->name_column->type, &ctx->output);
1652 ds_put_format(&ctx->output, UUID_FMT, UUID_ARGS(&row->uuid));
1654 ds_put_char(&ctx->output, '\n');
1656 if (!show || show->recurse) {
1660 show->recurse = true;
1661 for (i = 0; i < ARRAY_SIZE(show->columns); i++) {
1662 const struct ovsdb_idl_column *column = show->columns[i];
1663 const struct ovsdb_datum *datum;
1669 datum = ovsdb_idl_read(row, column);
1670 if (column->type.key.type == OVSDB_TYPE_UUID &&
1671 column->type.key.u.uuid.refTableName) {
1672 struct cmd_show_table *ref_show;
1675 ref_show = cmd_show_find_table_by_name(
1676 column->type.key.u.uuid.refTableName);
1678 for (j = 0; j < datum->n; j++) {
1679 const struct ovsdb_idl_row *ref_row;
1681 ref_row = ovsdb_idl_get_row_for_uuid(ctx->idl,
1683 &datum->keys[j].uuid);
1685 cmd_show_row(ctx, ref_row, level + 1);
1690 } else if (ovsdb_type_is_map(&column->type) &&
1691 column->type.value.type == OVSDB_TYPE_UUID &&
1692 column->type.value.u.uuid.refTableName) {
1693 struct cmd_show_table *ref_show;
1696 /* Prints the key to ref'ed table name map if the ref'ed table
1697 * is also defined in 'cmd_show_tables'. */
1698 ref_show = cmd_show_find_table_by_name(
1699 column->type.value.u.uuid.refTableName);
1700 if (ref_show && ref_show->name_column) {
1701 ds_put_char_multiple(&ctx->output, ' ', (level + 1) * 4);
1702 ds_put_format(&ctx->output, "%s:\n", column->name);
1703 for (j = 0; j < datum->n; j++) {
1704 const struct ovsdb_idl_row *ref_row;
1706 ref_row = ovsdb_idl_get_row_for_uuid(ctx->idl,
1708 &datum->values[j].uuid);
1710 ds_put_char_multiple(&ctx->output, ' ', (level + 2) * 4);
1711 ovsdb_atom_to_string(&datum->keys[j], column->type.key.type,
1713 ds_put_char(&ctx->output, '=');
1715 const struct ovsdb_datum *ref_datum;
1717 ref_datum = ovsdb_idl_read(ref_row,
1718 ref_show->name_column);
1719 ovsdb_datum_to_string(ref_datum,
1720 &ref_show->name_column->type,
1723 ds_put_cstr(&ctx->output, "\"<null>\"");
1725 ds_put_char(&ctx->output, '\n');
1731 if (!ovsdb_datum_is_default(datum, &column->type)) {
1732 ds_put_char_multiple(&ctx->output, ' ', (level + 1) * 4);
1733 ds_put_format(&ctx->output, "%s: ", column->name);
1734 ovsdb_datum_to_string(datum, &column->type, &ctx->output);
1735 ds_put_char(&ctx->output, '\n');
1738 show->recurse = false;
1742 cmd_show(struct ctl_context *ctx)
1744 const struct ovsdb_idl_row *row;
1746 for (row = ovsdb_idl_first_row(ctx->idl, cmd_show_tables[0].table);
1747 row; row = ovsdb_idl_next_row(row)) {
1748 cmd_show_row(ctx, row, 0);
1753 /* Given pointer to dynamic array 'options_p', array's current size
1754 * 'allocated_options_p' and number of added options 'n_options_p',
1755 * adds all command options to the array. Enlarges the array if
1758 ctl_add_cmd_options(struct option **options_p, size_t *n_options_p,
1759 size_t *allocated_options_p, int opt_val)
1762 const struct shash_node *node;
1763 size_t n_existing_options = *n_options_p;
1765 SHASH_FOR_EACH (node, &all_commands) {
1766 const struct ctl_command_syntax *p = node->data;
1768 if (p->options[0]) {
1769 char *save_ptr = NULL;
1773 s = xstrdup(p->options);
1774 for (name = strtok_r(s, ",", &save_ptr); name != NULL;
1775 name = strtok_r(NULL, ",", &save_ptr)) {
1779 ovs_assert(name[0] == '-' && name[1] == '-' && name[2]);
1782 equals = strchr(name, '=');
1784 has_arg = required_argument;
1787 has_arg = no_argument;
1790 o = find_option(name, *options_p, *n_options_p);
1792 ovs_assert(o - *options_p >= n_existing_options);
1793 ovs_assert(o->has_arg == has_arg);
1795 o = add_option(options_p, n_options_p, allocated_options_p);
1796 o->name = xstrdup(name);
1797 o->has_arg = has_arg;
1806 o = add_option(options_p, n_options_p, allocated_options_p);
1807 memset(o, 0, sizeof *o);
1810 /* Parses command-line input for commands. */
1811 struct ctl_command *
1812 ctl_parse_commands(int argc, char *argv[], struct shash *local_options,
1813 size_t *n_commandsp)
1815 struct ctl_command *commands;
1816 size_t n_commands, allocated_commands;
1820 n_commands = allocated_commands = 0;
1822 for (start = i = 0; i <= argc; i++) {
1823 if (i == argc || !strcmp(argv[i], "--")) {
1825 if (n_commands >= allocated_commands) {
1826 struct ctl_command *c;
1828 commands = x2nrealloc(commands, &allocated_commands,
1830 for (c = commands; c < &commands[n_commands]; c++) {
1831 shash_moved(&c->options);
1834 parse_command(i - start, &argv[start], local_options,
1835 &commands[n_commands++]);
1836 } else if (!shash_is_empty(local_options)) {
1837 ctl_fatal("missing command name (use --help for help)");
1843 ctl_fatal("missing command name (use --help for help)");
1845 *n_commandsp = n_commands;
1849 /* Prints all registered commands. */
1851 ctl_print_commands(void)
1853 const struct shash_node *node;
1855 SHASH_FOR_EACH (node, &all_commands) {
1856 const struct ctl_command_syntax *p = node->data;
1857 char *options = xstrdup(p->options);
1858 char *options_begin = options;
1861 for (item = strsep(&options, ","); item != NULL;
1862 item = strsep(&options, ",")) {
1863 if (item[0] != '\0') {
1864 printf("[%s] ", item);
1867 printf(",%s,", p->name);
1868 print_command_arguments(p);
1871 free(options_begin);
1877 /* Given array of options 'options', prints them. */
1879 ctl_print_options(const struct option *options)
1881 for (; options->name; options++) {
1882 const struct option *o = options;
1884 printf("--%s%s\n", o->name, o->has_arg ? "=ARG" : "");
1885 if (o->flag == NULL && o->val > 0 && o->val <= UCHAR_MAX) {
1886 printf("-%c%s\n", o->val, o->has_arg ? " ARG" : "");
1893 /* Returns the default local database path. */
1895 ctl_default_db(void)
1899 def = xasprintf("unix:%s/db.sock", ovs_rundir());
1904 /* Returns true if it looks like this set of arguments might modify the
1905 * database, otherwise false. (Not very smart, so it's prone to false
1908 ctl_might_write_to_db(char **argv)
1910 for (; *argv; argv++) {
1911 const struct ctl_command_syntax *p = shash_find_data(&all_commands,
1913 if (p && p->mode == RW) {
1921 ctl_fatal(const char *format, ...)
1926 va_start(args, format);
1927 message = xvasprintf(format, args);
1930 vlog_set_levels(&VLM_db_ctl_base, VLF_CONSOLE, VLL_OFF);
1931 VLOG_ERR("%s", message);
1932 ovs_error(0, "%s", message);
1933 ctl_exit(EXIT_FAILURE);
1936 /* Frees the current transaction and the underlying IDL and then calls
1939 * Freeing the transaction and the IDL is not strictly necessary, but it makes
1940 * for a clean memory leak report from valgrind in the normal case. That makes
1941 * it easier to notice real memory leaks. */
1943 ctl_exit(int status)
1946 ovsdb_idl_txn_abort(the_idl_txn);
1947 ovsdb_idl_txn_destroy(the_idl_txn);
1949 ovsdb_idl_destroy(the_idl);
1953 /* Comman database commands to be registered. */
1954 static const struct ctl_command_syntax db_ctl_commands[] = {
1955 {"comment", 0, INT_MAX, "[ARG]...", NULL, NULL, NULL, "", RO},
1956 {"get", 2, INT_MAX, "TABLE RECORD [COLUMN[:KEY]]...",pre_cmd_get, cmd_get,
1957 NULL, "--if-exists,--id=", RO},
1958 {"list", 1, INT_MAX, "TABLE [RECORD]...", pre_cmd_list, cmd_list, NULL,
1959 "--if-exists,--columns=", RO},
1960 {"find", 1, INT_MAX, "TABLE [COLUMN[:KEY]=VALUE]...", pre_cmd_find,
1961 cmd_find, NULL, "--columns=", RO},
1962 {"set", 3, INT_MAX, "TABLE RECORD COLUMN[:KEY]=VALUE...", pre_cmd_set,
1963 cmd_set, NULL, "--if-exists", RW},
1964 {"add", 4, INT_MAX, "TABLE RECORD COLUMN [KEY=]VALUE...", pre_cmd_add,
1965 cmd_add, NULL, "--if-exists", RW},
1966 {"remove", 4, INT_MAX, "TABLE RECORD COLUMN KEY|VALUE|KEY=VALUE...",
1967 pre_cmd_remove, cmd_remove, NULL, "--if-exists", RW},
1968 {"clear", 3, INT_MAX, "TABLE RECORD COLUMN...", pre_cmd_clear, cmd_clear,
1969 NULL, "--if-exists", RW},
1970 {"create", 2, INT_MAX, "TABLE COLUMN[:KEY]=VALUE...", pre_create,
1971 cmd_create, post_create, "--id=", RW},
1972 {"destroy", 1, INT_MAX, "TABLE [RECORD]...", pre_cmd_destroy, cmd_destroy,
1973 NULL, "--if-exists,--all", RW},
1974 {"wait-until", 2, INT_MAX, "TABLE RECORD [COLUMN[:KEY]=VALUE]...",
1975 pre_cmd_wait_until, cmd_wait_until, NULL, "", RO},
1976 {"show", 0, 0, "", pre_cmd_show, cmd_show, NULL, "", RO},
1977 {NULL, 0, 0, NULL, NULL, NULL, NULL, NULL, RO},
1980 /* Registers commands represented by 'struct ctl_command_syntax's to
1981 * 'all_commands'. The last element of 'commands' must be an all-NULL
1984 ctl_register_commands(const struct ctl_command_syntax *commands)
1986 const struct ctl_command_syntax *p;
1988 for (p = commands; p->name; p++) {
1989 shash_add_assert(&all_commands, p->name, p);
1993 /* Registers the 'db_ctl_commands' to 'all_commands'. */
1995 ctl_init(const struct ctl_table_class tables_[])
1998 ctl_register_commands(db_ctl_commands);
2001 /* Returns the text for the database commands usage. */
2003 ctl_get_db_cmd_usage(void)
2005 return "Database commands:\n\
2006 list TBL [REC] list RECord (or all records) in TBL\n\
2007 find TBL CONDITION... list records satisfying CONDITION in TBL\n\
2008 get TBL REC COL[:KEY] print values of COLumns in RECord in TBL\n\
2009 set TBL REC COL[:KEY]=VALUE set COLumn values in RECord in TBL\n\
2010 add TBL REC COL [KEY=]VALUE add (KEY=)VALUE to COLumn in RECord in TBL\n\
2011 remove TBL REC COL [KEY=]VALUE remove (KEY=)VALUE from COLumn\n\
2012 clear TBL REC COL clear values from COLumn in RECord in TBL\n\
2013 create TBL COL[:KEY]=VALUE create and initialize new record\n\
2014 destroy TBL REC delete RECord from TBL\n\
2015 wait-until TBL REC [COL[:KEY]=VALUE] wait until condition is true\n\
2016 Potentially unsafe database commands require --force option.\n";
2019 /* Initializes 'ctx' from 'command'. */
2021 ctl_context_init_command(struct ctl_context *ctx,
2022 struct ctl_command *command)
2024 ctx->argc = command->argc;
2025 ctx->argv = command->argv;
2026 ctx->options = command->options;
2028 ds_swap(&ctx->output, &command->output);
2029 ctx->table = command->table;
2030 ctx->try_again = false;
2033 /* Initializes the entire 'ctx'. */
2035 ctl_context_init(struct ctl_context *ctx, struct ctl_command *command,
2036 struct ovsdb_idl *idl, struct ovsdb_idl_txn *txn,
2037 struct ovsdb_symbol_table *symtab,
2038 void (*invalidate_cache)(struct ctl_context *))
2041 ctl_context_init_command(ctx, command);
2045 ctx->symtab = symtab;
2046 ctx->invalidate_cache = invalidate_cache;
2049 /* Completes processing of 'command' within 'ctx'. */
2051 ctl_context_done_command(struct ctl_context *ctx,
2052 struct ctl_command *command)
2054 ds_swap(&ctx->output, &command->output);
2055 command->table = ctx->table;
2058 /* Finishes up with 'ctx'.
2060 * If command is nonnull, first calls ctl_context_done_command() to complete
2061 * processing that command within 'ctx'. */
2063 ctl_context_done(struct ctl_context *ctx,
2064 struct ctl_command *command)
2067 ctl_context_done_command(ctx, command);
2069 invalidate_cache(ctx);
2072 void ctl_set_column(const char *table_name,
2073 const struct ovsdb_idl_row *row, const char *arg,
2074 struct ovsdb_symbol_table *symtab)
2076 set_column(get_table(table_name), row, arg, symtab);