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ovsdb: Add simple constraints.

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This commit is contained in:
Ben Pfaff
2010-02-08 14:09:36 -08:00
parent 629cd2f17f
commit bd76d25d8b
36 changed files with 2213 additions and 965 deletions
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82
lib/ovsdb-types.h
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@@ -16,6 +16,8 @@
#ifndef OVSDB_TYPES_H
#define OVSDB_TYPES_H 1
#include <float.h>
#include <pcre.h>
#include <stdbool.h>
#include <stdint.h>
#include "compiler.h"
@@ -35,13 +37,68 @@ enum ovsdb_atomic_type {
};
static inline bool ovsdb_atomic_type_is_valid(enum ovsdb_atomic_type);
static inline bool ovsdb_atomic_type_is_valid_key(enum ovsdb_atomic_type);
bool ovsdb_atomic_type_from_string(const char *, enum ovsdb_atomic_type *);
struct ovsdb_error *ovsdb_atomic_type_from_json(enum ovsdb_atomic_type *,
const struct json *);
const char *ovsdb_atomic_type_to_string(enum ovsdb_atomic_type);
struct json *ovsdb_atomic_type_to_json(enum ovsdb_atomic_type);
/* An atomic type plus optional constraints. */
struct ovsdb_base_type {
enum ovsdb_atomic_type type;
union {
struct ovsdb_integer_constraints {
int64_t min; /* minInteger or INT64_MIN. */
int64_t max; /* maxInteger or INT64_MAX. */
} integer;
struct ovsdb_real_constraints {
double min; /* minReal or -DBL_MAX. */
double max; /* minReal or DBL_MAX. */
} real;
/* No constraints for Boolean types. */
struct ovsdb_string_constraints {
pcre *re; /* Compiled regular expression. */
char *reMatch; /* reMatch or NULL. */
char *reComment; /* reComment or NULL. */
unsigned int minLen; /* minLength or 0. */
unsigned int maxLen; /* maxLength or UINT_MAX. */
} string;
} u;
};
#define OVSDB_BASE_VOID_INIT { .type = OVSDB_TYPE_VOID }
#define OVSDB_BASE_INTEGER_INIT { .type = OVSDB_TYPE_INTEGER, \
.u.integer = { INT64_MIN, INT64_MAX } }
#define OVSDB_BASE_REAL_INIT { .type = OVSDB_TYPE_REAL, \
.u.real = { -DBL_MAX, DBL_MAX } }
#define OVSDB_BASE_BOOLEAN_INIT { .type = OVSDB_TYPE_BOOLEAN }
#define OVSDB_BASE_STRING_INIT { .type = OVSDB_TYPE_STRING, \
.u.string = { NULL, NULL, NULL, \
0, UINT_MAX } }
#define OVSDB_BASE_UUID_INIT { .type = OVSDB_TYPE_UUID }
void ovsdb_base_type_init(struct ovsdb_base_type *, enum ovsdb_atomic_type);
void ovsdb_base_type_clone(struct ovsdb_base_type *,
const struct ovsdb_base_type *);
void ovsdb_base_type_destroy(struct ovsdb_base_type *);
bool ovsdb_base_type_is_valid(const struct ovsdb_base_type *);
bool ovsdb_base_type_has_constraints(const struct ovsdb_base_type *);
void ovsdb_base_type_clear_constraints(struct ovsdb_base_type *);
struct ovsdb_error *ovsdb_base_type_set_regex(struct ovsdb_base_type *,
const char *reMatch,
const char *reComment)
WARN_UNUSED_RESULT;
struct ovsdb_error *ovsdb_base_type_from_json(struct ovsdb_base_type *,
const struct json *)
WARN_UNUSED_RESULT;
struct json *ovsdb_base_type_to_json(const struct ovsdb_base_type *);
/* An OVSDB type.
*
* Several rules constrain the valid types. See ovsdb_type_is_valid() (in
@@ -60,14 +117,13 @@ struct json *ovsdb_atomic_type_to_json(enum ovsdb_atomic_type);
* can also be considered an optional pair of 'key_type' and 'value_type'.
*/
struct ovsdb_type {
enum ovsdb_atomic_type key_type;
enum ovsdb_atomic_type value_type;
struct ovsdb_base_type key;
struct ovsdb_base_type value;
unsigned int n_min;
unsigned int n_max; /* UINT_MAX stands in for "unlimited". */
};
#define OVSDB_TYPE_SCALAR_INITIALIZER(KEY_TYPE) \
{ KEY_TYPE, OVSDB_TYPE_VOID, 1, 1 }
#define OVSDB_TYPE_SCALAR_INITIALIZER(KEY) { KEY, OVSDB_BASE_VOID_INIT, 1, 1 }
extern const struct ovsdb_type ovsdb_type_integer;
extern const struct ovsdb_type ovsdb_type_real;
@@ -75,6 +131,9 @@ extern const struct ovsdb_type ovsdb_type_boolean;
extern const struct ovsdb_type ovsdb_type_string;
extern const struct ovsdb_type ovsdb_type_uuid;
void ovsdb_type_clone(struct ovsdb_type *, const struct ovsdb_type *);
void ovsdb_type_destroy(struct ovsdb_type *);
bool ovsdb_type_is_valid(const struct ovsdb_type *);
static inline bool ovsdb_type_is_scalar(const struct ovsdb_type *);
@@ -98,16 +157,9 @@ ovsdb_atomic_type_is_valid(enum ovsdb_atomic_type atomic_type)
return atomic_type >= 0 && atomic_type < OVSDB_N_TYPES;
}
static inline bool
ovsdb_atomic_type_is_valid_key(enum ovsdb_atomic_type atomic_type)
{
/* XXX should we disallow reals or booleans as keys? */
return ovsdb_atomic_type_is_valid(atomic_type);
}
static inline bool ovsdb_type_is_scalar(const struct ovsdb_type *type)
{
return (type->value_type == OVSDB_TYPE_VOID
return (type->value.type == OVSDB_TYPE_VOID
&& type->n_min == 1 && type->n_max == 1);
}
@@ -123,13 +175,13 @@ static inline bool ovsdb_type_is_composite(const struct ovsdb_type *type)
static inline bool ovsdb_type_is_set(const struct ovsdb_type *type)
{
return (type->value_type == OVSDB_TYPE_VOID
return (type->value.type == OVSDB_TYPE_VOID
&& (type->n_min != 1 || type->n_max != 1));
}
static inline bool ovsdb_type_is_map(const struct ovsdb_type *type)
{
return type->value_type != OVSDB_TYPE_VOID;
return type->value.type != OVSDB_TYPE_VOID;
}
#endif /* ovsdb-types.h */