X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=utilities%2Fovs-vsctl.c;h=d9d3b638fe7dbb5f69322615f7c9c49b1e380e06;hb=f51c1d9890c84c00950dbe5d174ef2682686bcb3;hp=ba0be30665ca75c67cd23959f8921dff762ea8d6;hpb=f19f25a44b30f090d5cad0c51414998c4ddbae6a;p=sliver-openvswitch.git diff --git a/utilities/ovs-vsctl.c b/utilities/ovs-vsctl.c index ba0be3066..d9d3b638f 100644 --- a/utilities/ovs-vsctl.c +++ b/utilities/ovs-vsctl.c @@ -111,18 +111,17 @@ static void do_vsctl(const char *args, static const struct vsctl_table_class *get_table(const char *table_name); static void set_column(const struct vsctl_table_class *, - const struct ovsdb_idl_row *, const char *arg); + const struct ovsdb_idl_row *, const char *arg, + struct ovsdb_symbol_table *); int main(int argc, char *argv[]) { struct ovsdb_idl *idl; - unsigned int seqno; struct vsctl_command *commands; size_t n_commands; char *args; - int trials; set_program_name(argv[0]); signal(SIGPIPE, SIG_IGN); @@ -146,19 +145,9 @@ main(int argc, char *argv[]) /* Now execute the commands. */ idl = the_idl = ovsdb_idl_create(db, &ovsrec_idl_class); - seqno = ovsdb_idl_get_seqno(idl); - trials = 0; for (;;) { - unsigned int new_seqno; - - ovsdb_idl_run(idl); - new_seqno = ovsdb_idl_get_seqno(idl); - if (new_seqno != seqno) { - if (++trials > 5) { - vsctl_fatal("too many database inconsistency failures"); - } + if (ovsdb_idl_run(idl)) { do_vsctl(args, commands, n_commands, idl); - seqno = new_seqno; } ovsdb_idl_wait(idl); @@ -306,12 +295,27 @@ parse_command(int argc, char *argv[], struct vsctl_command *command) shash_init(&command->options); for (i = 0; i < argc; i++) { - if (argv[i][0] != '-') { + const char *option = argv[i]; + const char *equals; + char *key, *value; + + if (option[0] != '-') { break; } - if (!shash_add_once(&command->options, argv[i], NULL)) { + + equals = strchr(option, '='); + if (equals) { + key = xmemdup0(option, equals - option); + value = xstrdup(equals + 1); + } else { + key = xstrdup(option); + value = NULL; + } + + if (shash_find(&command->options, key)) { vsctl_fatal("'%s' option specified multiple times", argv[i]); } + shash_add_nocopy(&command->options, key, value); } if (i == argc) { vsctl_fatal("missing command name"); @@ -325,10 +329,20 @@ parse_command(int argc, char *argv[], struct vsctl_command *command) SHASH_FOR_EACH (node, &command->options) { const char *s = strstr(p->options, node->name); int end = s ? s[strlen(node->name)] : EOF; - if (end != ',' && end != ' ' && end != '\0') { + + if (end != '=' && end != ',' && end != ' ' && end != '\0') { vsctl_fatal("'%s' command has no '%s' option", argv[i], node->name); } + if ((end == '=') != (node->data != NULL)) { + if (end == '=') { + vsctl_fatal("missing argument to '%s' option on '%s' " + "command", node->name, argv[i]); + } else { + vsctl_fatal("'%s' option on '%s' does not accept an " + "argument", node->name, argv[i]); + } + } } n_arg = argc - i - 1; @@ -444,13 +458,14 @@ Switch commands:\n\ \n\ Database commands:\n\ list TBL [REC] list RECord (or all records) in TBL\n\ - get TBL REC COL[:KEY] print values of COLumns in RECORD in TBL\n\ + get TBL REC COL[:KEY] print values of COLumns in RECord in TBL\n\ set TBL REC COL[:KEY]=VALUE set COLumn values in RECord in TBL\n\ add TBL REC COL [KEY=]VALUE add (KEY=)VALUE to COLumn in RECord in TBL\n\ remove TBL REC COL [KEY=]VALUE remove (KEY=)VALUE from COLumn\n\ clear TBL REC COL clear values from COLumn in RECord in TBL\n\ create TBL COL[:KEY]=VALUE create and initialize new record\n\ - destroy TBL REC delete REC from TBL\n\ + destroy TBL REC delete RECord from TBL\n\ + wait-until TBL REC [COL[:KEY]=VALUE] wait until condition is true\n\ Potentially unsafe database commands require --force option.\n\ \n\ Options:\n\ @@ -486,7 +501,12 @@ struct vsctl_context { struct ds output; struct ovsdb_idl *idl; struct ovsdb_idl_txn *txn; + struct ovsdb_symbol_table *symtab; const struct ovsrec_open_vswitch *ovs; + + /* A command may set this member to true if some prerequisite is not met + * and the caller should wait for something to change and then retry. */ + bool try_again; }; struct vsctl_bridge { @@ -597,17 +617,8 @@ free_info(struct vsctl_info *info) } shash_destroy(&info->bridges); - SHASH_FOR_EACH (node, &info->ports) { - struct vsctl_port *port = node->data; - free(port); - } - shash_destroy(&info->ports); - - SHASH_FOR_EACH (node, &info->ifaces) { - struct vsctl_iface *iface = node->data; - free(iface); - } - shash_destroy(&info->ifaces); + shash_destroy_free_data(&info->ports); + shash_destroy_free_data(&info->ifaces); } static void @@ -1359,7 +1370,8 @@ add_port(struct vsctl_context *ctx, } for (i = 0; i < n_settings; i++) { - set_column(get_table("Port"), &port->header_, settings[i]); + set_column(get_table("Port"), &port->header_, settings[i], + ctx->symtab); } bridge_insert_port((bridge->parent ? bridge->parent->br_cfg @@ -1876,6 +1888,14 @@ static const struct vsctl_table_class tables[] = { {{&ovsrec_table_port, &ovsrec_port_col_name, NULL}, {NULL, NULL, NULL}}}, + {&ovsrec_table_qos, + {{&ovsrec_table_port, &ovsrec_port_col_name, &ovsrec_port_col_qos}, + {NULL, NULL, NULL}}}, + + {&ovsrec_table_queue, + {{NULL, NULL, NULL}, + {NULL, NULL, NULL}}}, + {&ovsrec_table_ssl, {{&ovsrec_table_open_vswitch, NULL, &ovsrec_open_vswitch_col_ssl}}}, @@ -1948,7 +1968,8 @@ get_table(const char *table_name) static const struct ovsdb_idl_row * get_row_by_id(struct vsctl_context *ctx, const struct vsctl_table_class *table, - const struct vsctl_row_id *id, const char *record_id) + const struct vsctl_row_id *id, const char *record_id, + bool partial_match_ok) { const struct ovsdb_idl_row *referrer, *final; @@ -1968,20 +1989,21 @@ get_row_by_id(struct vsctl_context *ctx, const struct vsctl_table_class *table, const struct ovsdb_idl_row *row; unsigned int best_score = 0; - /* It might make sense to relax this assertion. */ - assert(id->name_column->type.key.type == OVSDB_TYPE_STRING); - referrer = NULL; for (row = ovsdb_idl_first_row(ctx->idl, id->table); row != NULL && best_score != UINT_MAX; row = ovsdb_idl_next_row(row)) { - struct ovsdb_datum name; + const struct ovsdb_datum *name; + + name = ovsdb_idl_get(row, id->name_column, + OVSDB_TYPE_STRING, OVSDB_TYPE_VOID); + if (name->n == 1) { + unsigned int score; - ovsdb_idl_txn_read(row, id->name_column, &name); - if (name.n == 1) { - unsigned int score = score_partial_match(name.keys[0].string, - record_id); + score = (partial_match_ok + ? score_partial_match(name->keys[0].string, record_id) + : !strcmp(name->keys[0].string, record_id)); if (score > best_score) { referrer = row; best_score = score; @@ -1989,7 +2011,6 @@ get_row_by_id(struct vsctl_context *ctx, const struct vsctl_table_class *table, referrer = NULL; } } - ovsdb_datum_destroy(&name, &id->name_column->type); } if (best_score && !referrer) { vsctl_fatal("multiple rows in %s match \"%s\"", @@ -2002,17 +2023,14 @@ get_row_by_id(struct vsctl_context *ctx, const struct vsctl_table_class *table, final = NULL; if (id->uuid_column) { - struct ovsdb_datum uuid; + const struct ovsdb_datum *uuid; - assert(id->uuid_column->type.key.type == OVSDB_TYPE_UUID); - assert(id->uuid_column->type.value.type == OVSDB_TYPE_VOID); - - ovsdb_idl_txn_read(referrer, id->uuid_column, &uuid); - if (uuid.n == 1) { + uuid = ovsdb_idl_get(referrer, id->uuid_column, + OVSDB_TYPE_UUID, OVSDB_TYPE_VOID); + if (uuid->n == 1) { final = ovsdb_idl_get_row_for_uuid(ctx->idl, table->class, - &uuid.keys[0].uuid); + &uuid->keys[0].uuid); } - ovsdb_datum_destroy(&uuid, &id->uuid_column->type); } else { final = referrer; } @@ -2021,8 +2039,9 @@ get_row_by_id(struct vsctl_context *ctx, const struct vsctl_table_class *table, } static const struct ovsdb_idl_row * -get_row(struct vsctl_context *ctx, - const struct vsctl_table_class *table, const char *record_id) +get_row__(struct vsctl_context *ctx, + const struct vsctl_table_class *table, const char *record_id, + bool partial_match_ok) { const struct ovsdb_idl_row *row; struct uuid uuid; @@ -2033,7 +2052,8 @@ get_row(struct vsctl_context *ctx, int i; for (i = 0; i < ARRAY_SIZE(table->row_ids); i++) { - row = get_row_by_id(ctx, table, &table->row_ids[i], record_id); + row = get_row_by_id(ctx, table, &table->row_ids[i], record_id, + partial_match_ok); if (row) { break; } @@ -2042,6 +2062,13 @@ get_row(struct vsctl_context *ctx, return row; } +static const struct ovsdb_idl_row * +get_row(struct vsctl_context *ctx, + const struct vsctl_table_class *table, const char *record_id) +{ + return get_row__(ctx, table, record_id, true); +} + static const struct ovsdb_idl_row * must_get_row(struct vsctl_context *ctx, const struct vsctl_table_class *table, const char *record_id) @@ -2085,15 +2112,65 @@ get_column(const struct vsctl_table_class *table, const char *column_name, } } +static char * +missing_operator_error(const char *arg, const char **allowed_operators, + size_t n_allowed) +{ + struct ds s; + + ds_init(&s); + ds_put_format(&s, "%s: argument does not end in ", arg); + ds_put_format(&s, "\"%s\"", allowed_operators[0]); + if (n_allowed == 2) { + ds_put_format(&s, " or \"%s\"", allowed_operators[1]); + } else if (n_allowed > 2) { + size_t i; + + for (i = 1; i < n_allowed - 1; i++) { + ds_put_format(&s, ", \"%s\"", allowed_operators[i]); + } + ds_put_format(&s, ", or \"%s\"", allowed_operators[i]); + } + ds_put_format(&s, " followed by a value."); + + return ds_steal_cstr(&s); +} + +/* Breaks 'arg' apart into a number of fields in the following order: + * + * - If 'columnp' is nonnull, the name of a column in 'table'. The column + * is stored into '*columnp'. The column name may be abbreviated. + * + * - If 'keyp' is nonnull, optionally a key string. (If both 'columnp' + * and 'keyp' are nonnull, then the column and key names are expected to + * be separated by ':'). The key is stored as a malloc()'d string into + * '*keyp', or NULL if no key is present in 'arg'. + * + * - If 'valuep' is nonnull, an operator followed by a value string. The + * allowed operators are the 'n_allowed' string in 'allowed_operators', + * or just "=" if 'n_allowed' is 0. If 'operatorp' is nonnull, then the + * operator is stored into '*operatorp' (one of the pointers from + * 'allowed_operators' is stored; nothing is malloc()'d). The value is + * stored as a malloc()'d string into '*valuep', or NULL if no value is + * present in 'arg'. + * + * At least 'columnp' or 'keyp' must be nonnull. + * + * On success, returns NULL. On failure, returned a malloc()'d string error + * message and stores NULL into all of the nonnull output arguments. */ static char * WARN_UNUSED_RESULT -parse_column_key_value(const char *arg, const struct vsctl_table_class *table, - const struct ovsdb_idl_column **columnp, - char **keyp, char **valuep) +parse_column_key_value(const char *arg, + const struct vsctl_table_class *table, + const struct ovsdb_idl_column **columnp, char **keyp, + const char **operatorp, + const char **allowed_operators, size_t n_allowed, + char **valuep) { const char *p = arg; char *error; assert(columnp || keyp); + assert(!(operatorp && !valuep)); if (keyp) { *keyp = NULL; } @@ -2138,12 +2215,37 @@ parse_column_key_value(const char *arg, const struct vsctl_table_class *table, } /* Parse value string. */ - if (*p == '=') { - if (!valuep) { - error = xasprintf("%s: value not accepted here", arg); + if (valuep) { + const char *best; + size_t best_len; + size_t i; + + if (!allowed_operators) { + static const char *equals = "="; + allowed_operators = = + n_allowed = 1; + } + + best = NULL; + best_len = 0; + for (i = 0; i < n_allowed; i++) { + const char *op = allowed_operators[i]; + size_t op_len = strlen(op); + + if (op_len > best_len && !strncmp(op, p, op_len) && p[op_len]) { + best_len = op_len; + best = op; + } + } + if (!best) { + error = missing_operator_error(arg, allowed_operators, n_allowed); goto error; } - *valuep = xstrdup(p + 1); + + if (operatorp) { + *operatorp = best; + } + *valuep = xstrdup(p + best_len); } else { if (valuep) { *valuep = NULL; @@ -2167,6 +2269,9 @@ error: if (valuep) { free(*valuep); *valuep = NULL; + if (operatorp) { + *operatorp = NULL; + } } return error; } @@ -2186,13 +2291,23 @@ cmd_get(struct vsctl_context *ctx) row = must_get_row(ctx, table, record_id); for (i = 3; i < ctx->argc; i++) { const struct ovsdb_idl_column *column; - struct ovsdb_datum datum; + 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)); + &column, &key_string, + NULL, NULL, 0, NULL)); - ovsdb_idl_txn_read(row, column, &datum); + datum = ovsdb_idl_read(row, column); if (key_string) { union ovsdb_atom key; unsigned int idx; @@ -2204,9 +2319,9 @@ cmd_get(struct vsctl_context *ctx) die_if_error(ovsdb_atom_from_string(&key, &column->type.key, - key_string)); + key_string, ctx->symtab)); - idx = ovsdb_datum_find_key(&datum, &key, + idx = ovsdb_datum_find_key(datum, &key, column->type.key.type); if (idx == UINT_MAX) { if (!if_exists) { @@ -2215,15 +2330,14 @@ cmd_get(struct vsctl_context *ctx) column->name); } } else { - ovsdb_atom_to_string(&datum.values[idx], + 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); + ovsdb_datum_to_string(datum, &column->type, out); } ds_put_char(out, '\n'); - ovsdb_datum_destroy(&datum, &column->type); free(key_string); } @@ -2239,15 +2353,13 @@ list_record(const struct vsctl_table_class *table, UUID_ARGS(&row->uuid)); for (i = 0; i < table->class->n_columns; i++) { const struct ovsdb_idl_column *column = &table->class->columns[i]; - struct ovsdb_datum datum; + const struct ovsdb_datum *datum; - ovsdb_idl_txn_read(row, column, &datum); + datum = ovsdb_idl_read(row, column); ds_put_format(out, "%-20s: ", column->name); - ovsdb_datum_to_string(&datum, &column->type, out); + ovsdb_datum_to_string(datum, &column->type, out); ds_put_char(out, '\n'); - - ovsdb_datum_destroy(&datum, &column->type); } } @@ -2284,14 +2396,15 @@ cmd_list(struct vsctl_context *ctx) static void set_column(const struct vsctl_table_class *table, - const struct ovsdb_idl_row *row, const char *arg) + 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, - &value_string); + NULL, NULL, 0, &value_string); die_if_error(error); if (!value_string) { vsctl_fatal("%s: missing value", arg); @@ -2299,7 +2412,7 @@ set_column(const struct vsctl_table_class *table, if (key_string) { union ovsdb_atom key, value; - struct ovsdb_datum old, new; + struct ovsdb_datum datum; if (column->type.value.type == OVSDB_TYPE_VOID) { vsctl_fatal("cannot specify key to set for non-map column %s", @@ -2307,26 +2420,24 @@ set_column(const struct vsctl_table_class *table, } die_if_error(ovsdb_atom_from_string(&key, &column->type.key, - key_string)); + key_string, symtab)); die_if_error(ovsdb_atom_from_string(&value, &column->type.value, - value_string)); + value_string, symtab)); - ovsdb_datum_init_empty(&new); - ovsdb_datum_add_unsafe(&new, &key, &value, &column->type); + 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_idl_txn_read(row, column, &old); - ovsdb_datum_union(&old, &new, &column->type, true); - ovsdb_idl_txn_write(row, column, &old); - - ovsdb_datum_destroy(&new, &column->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)); + value_string, symtab)); ovsdb_idl_txn_write(row, column, &datum); } @@ -2346,7 +2457,7 @@ cmd_set(struct vsctl_context *ctx) 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]); + set_column(table, row, ctx->argv[i], ctx->symtab); } } @@ -2368,7 +2479,7 @@ cmd_add(struct vsctl_context *ctx) die_if_error(get_column(table, column_name, &column)); type = &column->type; - ovsdb_idl_txn_read(row, column, &old); + 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; @@ -2376,7 +2487,8 @@ cmd_add(struct vsctl_context *ctx) 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])); + 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); } @@ -2408,7 +2520,7 @@ cmd_remove(struct vsctl_context *ctx) die_if_error(get_column(table, column_name, &column)); type = &column->type; - ovsdb_idl_txn_read(row, column, &old); + 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; @@ -2417,11 +2529,13 @@ cmd_remove(struct vsctl_context *ctx) 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]); + 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])); + 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); @@ -2469,15 +2583,36 @@ cmd_clear(struct vsctl_context *ctx) 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; const struct ovsdb_idl_row *row; + const struct uuid *uuid; int i; + if (id) { + struct ovsdb_symbol *symbol; + + if (id[0] != '@') { + vsctl_fatal("row id \"%s\" does not begin with \"@\"", id); + } + + symbol = ovsdb_symbol_table_insert(ctx->symtab, id); + if (symbol->used) { + vsctl_fatal("row id \"%s\" may only be used to insert a single " + "row", id); + } + symbol->used = true; + + uuid = &symbol->uuid; + } else { + uuid = NULL; + } + table = get_table(table_name); - row = ovsdb_idl_txn_insert(ctx->txn, table->class); + row = ovsdb_idl_txn_insert(ctx->txn, table->class, uuid); for (i = 2; i < ctx->argc; i++) { - set_column(table, row, ctx->argv[i]); + set_column(table, row, ctx->argv[i], ctx->symtab); } ds_put_format(&ctx->output, UUID_FMT, UUID_ARGS(&row->uuid)); } @@ -2524,6 +2659,104 @@ cmd_destroy(struct vsctl_context *ctx) } } } + +static bool +is_condition_satified(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; + + 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 +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, false); + if (!row) { + ctx->try_again = true; + return; + } + + for (i = 3; i < ctx->argc; i++) { + if (!is_condition_satified(table, row, ctx->argv[i], ctx->symtab)) { + ctx->try_again = true; + return; + } + } +} static struct json * where_uuid_equals(const struct uuid *uuid) @@ -2542,7 +2775,8 @@ where_uuid_equals(const struct uuid *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) + const struct ovsrec_open_vswitch *ovs, + struct ovsdb_symbol_table *symtab) { ctx->argc = command->argc; ctx->argv = command->argv; @@ -2552,7 +2786,9 @@ vsctl_context_init(struct vsctl_context *ctx, struct vsctl_command *command, ctx->idl = idl; ctx->txn = txn; ctx->ovs = ovs; + ctx->symtab = symtab; + ctx->try_again = false; } static void @@ -2568,6 +2804,8 @@ do_vsctl(const char *args, struct vsctl_command *commands, size_t n_commands, struct ovsdb_idl_txn *txn; const struct ovsrec_open_vswitch *ovs; enum ovsdb_idl_txn_status status; + struct ovsdb_symbol_table *symtab; + const char *unused; struct vsctl_command *c; int64_t next_cfg = 0; char *error; @@ -2591,32 +2829,47 @@ do_vsctl(const char *args, struct vsctl_command *commands, size_t n_commands, json_destroy(where); } + symtab = ovsdb_symbol_table_create(); + for (c = commands; c < &commands[n_commands]; c++) { + ds_init(&c->output); + } for (c = commands; c < &commands[n_commands]; c++) { struct vsctl_context ctx; - ds_init(&c->output); - vsctl_context_init(&ctx, c, idl, txn, ovs); + 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; + } } status = ovsdb_idl_txn_commit_block(txn); if (wait_for_reload && status == TXN_SUCCESS) { next_cfg = ovsdb_idl_txn_get_increment_new_value(txn); } - for (c = commands; c < &commands[n_commands]; c++) { - if (c->syntax->postprocess) { - struct vsctl_context ctx; + if (status == TXN_UNCHANGED || status == TXN_SUCCESS) { + for (c = commands; c < &commands[n_commands]; c++) { + if (c->syntax->postprocess) { + struct vsctl_context ctx; - vsctl_context_init(&ctx, c, idl, txn, ovs); - (c->syntax->postprocess)(&ctx); - vsctl_context_done(&ctx, c); + vsctl_context_init(&ctx, c, idl, txn, ovs, symtab); + (c->syntax->postprocess)(&ctx); + vsctl_context_done(&ctx, c); + } } } error = xstrdup(ovsdb_idl_txn_get_error(txn)); ovsdb_idl_txn_destroy(txn); the_idl_txn = NULL; + unused = ovsdb_symbol_table_find_unused(symtab); + if (unused) { + vsctl_fatal("row id \"%s\" is referenced but never created (e.g. " + "with \"-- --id=%s create ...\")", unused, unused); + } + switch (status) { case TXN_INCOMPLETE: NOT_REACHED(); @@ -2630,11 +2883,7 @@ do_vsctl(const char *args, struct vsctl_command *commands, size_t n_commands, break; case TXN_TRY_AGAIN: - for (c = commands; c < &commands[n_commands]; c++) { - ds_destroy(&c->output); - } - free(error); - return; + goto try_again; case TXN_ERROR: vsctl_fatal("transaction error: %s", error); @@ -2644,8 +2893,12 @@ do_vsctl(const char *args, struct vsctl_command *commands, size_t n_commands, } free(error); + ovsdb_symbol_table_destroy(symtab); + for (c = commands; c < &commands[n_commands]; c++) { struct ds *ds = &c->output; + struct shash_node *node; + if (oneline) { size_t j; @@ -2670,6 +2923,10 @@ do_vsctl(const char *args, struct vsctl_command *commands, size_t n_commands, fputs(ds_cstr(ds), stdout); } ds_destroy(&c->output); + + SHASH_FOR_EACH (node, &c->options) { + free(node->data); + } shash_destroy(&c->options); } free(commands); @@ -2692,6 +2949,17 @@ do_vsctl(const char *args, struct vsctl_command *commands, size_t n_commands, ovsdb_idl_destroy(idl); exit(EXIT_SUCCESS); + +try_again: + /* Our transaction needs to be rerun, or a prerequisite was not met. Free + * resources and return so that the caller can try again. */ + ovsdb_idl_txn_abort(txn); + ovsdb_idl_txn_destroy(txn); + ovsdb_symbol_table_destroy(symtab); + for (c = commands; c < &commands[n_commands]; c++) { + ds_destroy(&c->output); + } + free(error); } static const struct vsctl_command_syntax all_commands[] = { @@ -2742,8 +3010,9 @@ static const struct vsctl_command_syntax all_commands[] = { {"add", 4, INT_MAX, cmd_add, NULL, ""}, {"remove", 4, INT_MAX, cmd_remove, NULL, ""}, {"clear", 3, INT_MAX, cmd_clear, NULL, ""}, - {"create", 2, INT_MAX, cmd_create, post_create, ""}, + {"create", 2, INT_MAX, cmd_create, post_create, "--id="}, {"destroy", 1, INT_MAX, cmd_destroy, NULL, "--if-exists"}, + {"wait-until", 2, INT_MAX, cmd_wait_until, NULL, ""}, {NULL, 0, 0, NULL, NULL, NULL}, };