res_stasis_mailbox.c

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/*
 * Asterisk -- An open source telephony toolkit.
 *
 * Copyright (C) 2014, Digium, Inc.
 *
 * Jonathan Rose <jrose@digium.com>
 *
 * See http://www.asterisk.org for more information about
 * the Asterisk project. Please do not directly contact
 * any of the maintainers of this project for assistance;
 * the project provides a web site, mailing lists and IRC
 * channels for your use.
 *
 * This program is free software, distributed under the terms of
 * the GNU General Public License Version 2. See the LICENSE file
 * at the top of the source tree.
 */
 
/*** MODULEINFO
    <depend type="module">res_stasis</depend>
    <depend type="module">res_mwi_external</depend>
    <support_level>core</support_level>
 ***/
 
#include "asterisk.h"
 
#include "asterisk/astdb.h"
#include "asterisk/astobj2.h"
#include "asterisk/module.h"
#include "asterisk/stasis_app_impl.h"
#include "asterisk/stasis_app_mailbox.h"
#include "asterisk/res_mwi_external.h"
 
/*! Number of hash buckets for mailboxes */
#define MAILBOX_BUCKETS 37
 
static struct ast_json *mailbox_to_json(
    const struct ast_mwi_mailbox_object *mailbox)
{
    return ast_json_pack("{s: s, s: i, s: i}",
        "name", ast_mwi_mailbox_get_id(mailbox),
        "old_messages", ast_mwi_mailbox_get_msgs_old(mailbox),
        "new_messages", ast_mwi_mailbox_get_msgs_new(mailbox));
}
 
enum stasis_mailbox_result stasis_app_mailbox_to_json(
    const char *name, struct ast_json **json)
{
    struct ast_json *mailbox_json;
    const struct ast_mwi_mailbox_object *mailbox;
 
    mailbox = ast_mwi_mailbox_get(name);
    if (!mailbox) {
        return STASIS_MAILBOX_MISSING;
    }
 
    mailbox_json = mailbox_to_json(mailbox);
    if (!mailbox_json) {
        ast_mwi_mailbox_unref(mailbox);
        return STASIS_MAILBOX_ERROR;
    }
 
    *json = mailbox_json;
 
    return STASIS_MAILBOX_OK;
}
 
struct ast_json *stasis_app_mailboxes_to_json()
{
    struct ast_json *array = ast_json_array_create();
    struct ao2_container *mailboxes;
    struct ao2_iterator iter;
    const struct ast_mwi_mailbox_object *mailbox;
 
    if (!array) {
        return NULL;
    }
 
    mailboxes = ast_mwi_mailbox_get_all();
    if (!mailboxes) {
        ast_json_unref(array);
        return NULL;
    }
 
    iter = ao2_iterator_init(mailboxes, 0);
    for (; (mailbox = ao2_iterator_next(&iter)); ast_mwi_mailbox_unref(mailbox)) {
        struct ast_json *appending = mailbox_to_json(mailbox);
        if (!appending || ast_json_array_append(array, appending)) {
            /* Failed to append individual mailbox to the array. Abort. */
            ast_json_unref(array);
            array = NULL;
            break;
        }
    }
    ao2_iterator_destroy(&iter);
    ao2_ref(mailboxes, -1);
 
    return array;
}
 
int stasis_app_mailbox_update(
    const char *name, int old_messages, int new_messages)
{
    struct ast_mwi_mailbox_object *mailbox;
    int res = 0;
 
    mailbox = ast_mwi_mailbox_alloc(name);
    if (!mailbox) {
        return -1;
    }
    ast_mwi_mailbox_set_msgs_new(mailbox, new_messages);
    ast_mwi_mailbox_set_msgs_old(mailbox, old_messages);
    if (ast_mwi_mailbox_update(mailbox)) {
        res = -1;
    }
 
    ast_mwi_mailbox_unref(mailbox);
 
    return res;
}
 
enum stasis_mailbox_result stasis_app_mailbox_delete(
    const char *name)
{
    const struct ast_mwi_mailbox_object *mailbox;
 
    /* Make sure the mailbox actually exists before we delete it */
    mailbox = ast_mwi_mailbox_get(name);
    if (!mailbox) {
        return STASIS_MAILBOX_MISSING;
    }
 
    ast_mwi_mailbox_unref(mailbox);
    mailbox = NULL;
 
    /* Now delete the mailbox */
    if (ast_mwi_mailbox_delete(name)) {
        return STASIS_MAILBOX_ERROR;
    }
 
    return STASIS_MAILBOX_OK;
}
 
static int load_module(void)
{
    return AST_MODULE_LOAD_SUCCESS;
}
 
static int unload_module(void)
{
    return 0;
}
 
AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_GLOBAL_SYMBOLS, "Stasis application mailbox support",
    .support_level = AST_MODULE_SUPPORT_CORE,
    .load = load_module,
    .unload = unload_module,
    .requires = "res_stasis,res_mwi_external"
);