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/*
* Copyright (c) 2021 Cisco and/or its affiliates.
* 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.
*/
/**
* \file interface.c
* \brief Implementation of interface base class.
*/
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include <hicn/facemgr/facelet.h>
#include <hicn/facemgr/loop.h> /* *_callback_data_t */
#include <hicn/util/map.h>
#include "interface.h"
TYPEDEF_MAP_H(interface_ops_map, const char *, const interface_ops_t *);
TYPEDEF_MAP(interface_ops_map, const char *, const interface_ops_t *, strcmp,
string_snprintf, generic_snprintf);
static interface_ops_map_t *interface_ops_map = NULL;
int interface_register(const interface_ops_t *ops) {
if (!interface_ops_map) {
interface_ops_map = interface_ops_map_create();
if (!interface_ops_map) return -1;
}
interface_ops_map_add(interface_ops_map, ops->type, ops);
return 0;
}
int interface_unregister_all() {
int ret = 0;
const char **ops_name_array = NULL;
int n = interface_ops_map_get_key_array(interface_ops_map, &ops_name_array);
if (n < 0) {
ERROR("[interface_unregister_all] Could not get interface ops array");
return -1;
}
for (unsigned i = 0; i < n; i++) {
const char *ops_name = ops_name_array[i];
if (interface_ops_map_remove(interface_ops_map, ops_name, NULL) < 0) {
ERROR(
"[interface_unregister_all] Could not remove %s from interface ops "
"map",
ops_name);
ret = -1;
}
}
free(ops_name_array);
interface_ops_map_free(interface_ops_map);
interface_ops_map = NULL;
return ret;
}
interface_t *interface_create(const char *name, const char *type) {
const interface_ops_t *ops = NULL;
int rc = interface_ops_map_get(interface_ops_map, type, &ops);
if (rc < 0) {
printf("Interface type not found %s\n", type);
return NULL;
}
interface_t *interface = malloc(sizeof(interface_t));
if (!interface) return NULL;
interface->name = strdup(name);
/* this should use type */
interface->ops = ops;
interface->callback = NULL;
interface->callback_owner = NULL;
interface->data = NULL;
return interface;
}
void interface_free(interface_t *interface) {
free(interface->name);
free(interface);
}
void interface_set_callback(interface_t *interface, void *callback_owner,
interface_cb_t callback) {
interface->callback = callback;
interface->callback_owner = callback_owner;
}
int interface_initialize(interface_t *interface, void *cfg) {
if (!interface->ops->initialize) return -1;
return interface->ops->initialize(interface, cfg);
}
int interface_finalize(interface_t *interface) {
if (!interface->ops->finalize) return -1;
return interface->ops->finalize(interface);
}
int interface_on_event(interface_t *interface, facelet_t *facelet) {
if (!interface->ops->on_event) return -1;
return interface->ops->on_event(interface, facelet);
}
int interface_raise_event(interface_t *interface, facelet_t *facelet) {
assert(interface->callback);
return interface->callback(interface->callback_owner,
INTERFACE_CB_TYPE_RAISE_EVENT, facelet);
}
int interface_register_fd(interface_t *interface, int fd, void *data) {
assert(interface->callback);
fd_callback_data_t fd_callback = {
.fd = fd,
.owner = interface,
.callback = (fd_callback_t)interface->ops->callback,
.data = data,
};
return interface->callback(interface->callback_owner,
INTERFACE_CB_TYPE_REGISTER_FD, &fd_callback);
}
int interface_unregister_fd(interface_t *interface, int fd) {
assert(interface->callback);
fd_callback_data_t fd_callback = {
.fd = fd,
.owner = interface,
.callback = NULL,
.data = NULL,
};
return interface->callback(interface->callback_owner,
INTERFACE_CB_TYPE_UNREGISTER_FD, &fd_callback);
}
typedef int (*interface_fd_callback_t)(interface_t *interface, int fd,
void *unused);
int interface_register_timer(interface_t *interface, unsigned delay_ms,
interface_fd_callback_t callback, void *data) {
assert(interface->callback);
timer_callback_data_t timer_callback = {
.delay_ms = delay_ms,
.owner = interface,
.callback = (fd_callback_t)callback,
.data = data,
};
int rc =
interface->callback(interface->callback_owner,
INTERFACE_CB_TYPE_REGISTER_TIMER, &timer_callback);
return rc;
}
int interface_unregister_timer(interface_t *interface, int fd) {
assert(interface->callback);
return interface->callback(interface->callback_owner,
INTERFACE_CB_TYPE_UNREGISTER_TIMER, &fd);
}
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