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/*
* Copyright (C) 2018 "IoT.bzh"
* Author José Bollo <jose.bollo@iot.bzh>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
/**
* An index is an integer
*/
typedef uint32_t anydb_idx_t;
/*
* Definition of some predefined indexes
*/
/** The invalid index */
#define AnyIdx_Invalid ((anydb_idx_t)0xffffffffu)
/** */
#define AnyIdx_Any ((anydb_idx_t)0xfffffffeu)
#define AnyIdx_Wide ((anydb_idx_t)0xfffffffdu)
#define AnyIdx_None ((anydb_idx_t)0xfffffffcu)
#define AnyIdx_Max ((anydb_idx_t)0xfffffff7u)
/**
* A key is a set of index
*/
struct anydb_key {
/** client string id */
anydb_idx_t client;
/** session string id */
anydb_idx_t session;
/** user string id */
anydb_idx_t user;
/** permission string id */
anydb_idx_t permission;
};
typedef struct anydb_key anydb_key_t;
/**
* A rule is a set of 32 bits integers
*/
struct anydb_value
{
/** value string id */
anydb_idx_t value;
/** expiration */
time_t expire;
};
typedef struct anydb_value anydb_value_t;
/**
*/
enum anydb_action
{
Anydb_Action_Stop,
Anydb_Action_Continue,
Anydb_Action_Update_And_Stop,
Anydb_Action_Remove_And_Continue
};
typedef enum anydb_action anydb_action_t;
enum anydb_transaction
{
Anydb_Transaction_Start = 0,
Anydb_Transaction_Commit = 1,
Anydb_Transaction_Cancel = 2
};
typedef enum anydb_transaction anydb_transaction_t;
struct anydb_itf
{
int (*index)(void *clodb, anydb_idx_t *idx, const char *name, bool create);
const char *(*string)(void *clodb, anydb_idx_t idx);
int (*transaction)(void *clodb, anydb_transaction_t atomic_op);
void (*apply)(void *clodb, anydb_action_t (*oper)(void *closure, const anydb_key_t *key, anydb_value_t *value), void *closure);
int (*add)(void *clodb, const anydb_key_t *key, const anydb_value_t *value);
void (*gc)(void *clodb);
int (*sync)(void *clodb);
void (*destroy)(void *clodb);
};
typedef struct anydb_itf anydb_itf_t;
struct anydb
{
void *clodb;
anydb_itf_t itf;
};
typedef struct anydb anydb_t;
/** manage atomicity of operations */
extern
int
anydb_transaction(
anydb_t *db,
anydb_transaction_t oper
);
/** enumerate */
extern
void
anydb_for_all(
anydb_t *db,
void *closure,
void (*callback)(
void *closure,
const data_key_t *key,
const data_value_t *value),
const data_key_t *key
);
/** drop rules */
extern
int
anydb_drop(
anydb_t *db,
const data_key_t *key
);
/** set a rules */
extern
int
anydb_set(
anydb_t *db,
const data_key_t *key,
const data_value_t *value
);
/** test a rule, returns 0 or the score: count of exact keys */
extern
int
anydb_test(
anydb_t *db,
const data_key_t *key,
data_value_t *value
);
/** drop rules */
extern
void
anydb_cleanup(
anydb_t *db
);
/** is the database empty? */
extern
bool
anydb_is_empty(
anydb_t *db
);
/** destroy the database */
extern
void
anydb_destroy(
anydb_t *db
);
/** synchronize database */
extern
int
anydb_sync(
anydb_t *db
);
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