test_stasis_endpoints.c

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/*
 * Asterisk -- An open source telephony toolkit.
 *
 * Copyright (C) 2013, Digium, Inc.
 *
 * David M. Lee, II <dlee@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.
 */
 
/*!
 * \file
 * \brief Test endpoints.
 *
 * \author\verbatim David M. Lee, II <dlee@digium.com> \endverbatim
 *
 * \ingroup tests
 */
 
/*** MODULEINFO
    <depend>TEST_FRAMEWORK</depend>
    <depend>res_stasis_test</depend>
    <support_level>core</support_level>
 ***/
 
#include "asterisk.h"
 
#include "asterisk/astobj2.h"
#include "asterisk/channel.h"
#include "asterisk/endpoints.h"
#include "asterisk/module.h"
#include "asterisk/stasis_channels.h"
#include "asterisk/stasis_endpoints.h"
#include "asterisk/stasis_test.h"
#include "asterisk/test.h"
 
static const char *test_category = "/stasis/endpoints/";
 
/*! \brief Message matcher looking for cache update messages */
static int cache_update(struct stasis_message *msg, const void *data) {
    struct stasis_cache_update *update;
    struct ast_endpoint_snapshot *snapshot;
    const char *name = data;
 
    if (stasis_cache_update_type() != stasis_message_type(msg)) {
        return 0;
    }
 
    update = stasis_message_data(msg);
    if (ast_endpoint_snapshot_type() != update->type) {
        return 0;
    }
 
    snapshot = stasis_message_data(update->old_snapshot);
    if (!snapshot) {
        snapshot = stasis_message_data(update->new_snapshot);
    }
 
    return 0 == strcmp(name, snapshot->resource);
}
 
AST_TEST_DEFINE(state_changes)
{
    RAII_VAR(struct ast_endpoint *, uut, NULL, ast_endpoint_shutdown);
    RAII_VAR(struct ast_channel *, chan, NULL, ast_hangup);
    RAII_VAR(struct stasis_message_sink *, sink, NULL, ao2_cleanup);
    RAII_VAR(struct stasis_subscription *, sub, NULL, stasis_unsubscribe);
    struct stasis_message *msg;
    struct stasis_message_type *type;
    struct ast_endpoint_snapshot *actual_snapshot;
    int actual_count;
 
    switch (cmd) {
    case TEST_INIT:
        info->name = __func__;
        info->category = test_category;
        info->summary = "Test endpoint updates as its state changes";
        info->description =
            "Test endpoint updates as its state changes";
        return AST_TEST_NOT_RUN;
    case TEST_EXECUTE:
        break;
    }
 
    uut = ast_endpoint_create("TEST", __func__);
    ast_test_validate(test, NULL != uut);
 
    sink = stasis_message_sink_create();
    ast_test_validate(test, NULL != sink);
 
    sub = stasis_subscribe(ast_endpoint_topic(uut),
        stasis_message_sink_cb(), sink);
    ast_test_validate(test, NULL != sub);
 
    ast_endpoint_set_state(uut, AST_ENDPOINT_OFFLINE);
    actual_count = stasis_message_sink_wait_for_count(sink, 1,
        STASIS_SINK_DEFAULT_WAIT);
    ast_test_validate(test, 1 == actual_count);
    msg = sink->messages[0];
    type = stasis_message_type(msg);
    ast_test_validate(test, ast_endpoint_snapshot_type() == type);
    actual_snapshot = stasis_message_data(msg);
    ast_test_validate(test, AST_ENDPOINT_OFFLINE == actual_snapshot->state);
 
    ast_endpoint_set_max_channels(uut, 8675309);
    actual_count = stasis_message_sink_wait_for_count(sink, 2,
        STASIS_SINK_DEFAULT_WAIT);
    ast_test_validate(test, 2 == actual_count);
    msg = sink->messages[1];
    type = stasis_message_type(msg);
    ast_test_validate(test, ast_endpoint_snapshot_type() == type);
    actual_snapshot = stasis_message_data(msg);
    ast_test_validate(test, 8675309 == actual_snapshot->max_channels);
 
    return AST_TEST_PASS;
}
 
AST_TEST_DEFINE(cache_clear)
{
    RAII_VAR(struct ast_endpoint *, uut, NULL, ast_endpoint_shutdown);
    RAII_VAR(struct ast_channel *, chan, NULL, ast_hangup);
    RAII_VAR(struct stasis_message_sink *, sink, NULL, ao2_cleanup);
    RAII_VAR(struct stasis_subscription *, sub, NULL, stasis_unsubscribe);
    struct stasis_message *msg;
    struct stasis_message_type *type;
    struct ast_endpoint_snapshot *actual_snapshot;
    struct stasis_cache_update *update;
    int message_index;
 
    switch (cmd) {
    case TEST_INIT:
        info->name = __func__;
        info->category = test_category;
        info->summary = "Test endpoint state change messages";
        info->description = "Test endpoint state change messages";
        return AST_TEST_NOT_RUN;
    case TEST_EXECUTE:
        break;
    }
 
    /* Subscribe to the cache topic */
    sink = stasis_message_sink_create();
    ast_test_validate(test, NULL != sink);
 
    sub = stasis_subscribe(
        ast_endpoint_topic_all_cached(),
        stasis_message_sink_cb(), sink);
    ast_test_validate(test, NULL != sub);
 
    uut = ast_endpoint_create("TEST", __func__);
    ast_test_validate(test, NULL != uut);
 
    /* Since the cache topic is a singleton (ew), it may have messages from
     * elsewheres that it's processing, or maybe even some final messages
     * from the prior test. We've got to wait_for our specific message,
     * instead of wait_for_count.
     */
    message_index = stasis_message_sink_wait_for(sink, 0,
        cache_update, __func__, STASIS_SINK_DEFAULT_WAIT);
    ast_test_validate(test, 0 <= message_index);
 
    /* First message should be a cache creation entry for our endpoint */
    msg = sink->messages[message_index];
    type = stasis_message_type(msg);
    ast_test_validate(test, stasis_cache_update_type() == type);
    update = stasis_message_data(msg);
    ast_test_validate(test, ast_endpoint_snapshot_type() == update->type);
    ast_test_validate(test, NULL == update->old_snapshot);
    actual_snapshot = stasis_message_data(update->new_snapshot);
    ast_test_validate(test, 0 == strcmp("TEST", actual_snapshot->tech));
    ast_test_validate(test,
        0 == strcmp(__func__, actual_snapshot->resource));
 
    ast_endpoint_shutdown(uut);
    uut = NULL;
 
    /* Note: there's a few messages between the creation and the clear.
     * Wait for all of them... */
    message_index = stasis_message_sink_wait_for(sink, message_index + 2,
        cache_update, __func__, STASIS_SINK_DEFAULT_WAIT);
    ast_test_validate(test, 0 <= message_index);
 
    /* Now we should have a cache removal entry */
    msg = sink->messages[message_index];
    type = stasis_message_type(msg);
    ast_test_validate(test, stasis_cache_update_type() == type);
    update = stasis_message_data(msg);
    ast_test_validate(test, ast_endpoint_snapshot_type() == update->type);
    actual_snapshot = stasis_message_data(update->old_snapshot);
    ast_test_validate(test, 0 == strcmp("TEST", actual_snapshot->tech));
    ast_test_validate(test,
        0 == strcmp(__func__, actual_snapshot->resource));
    ast_test_validate(test, NULL == update->new_snapshot);
 
    return AST_TEST_PASS;
}
 
AST_TEST_DEFINE(channel_messages)
{
    RAII_VAR(struct ast_endpoint *, uut, NULL, ast_endpoint_shutdown);
    RAII_VAR(struct ast_channel *, chan, NULL, ast_hangup);
    RAII_VAR(struct stasis_message_sink *, sink, NULL, ao2_cleanup);
    RAII_VAR(struct stasis_subscription *, sub, NULL, stasis_unsubscribe);
    struct stasis_message *msg;
    struct stasis_message_type *type;
    struct ast_endpoint_snapshot *actual_snapshot;
    int expected_count;
    int actual_count;
    int i;
    int channel_index = -1;
    int endpoint_index = -1;
 
    switch (cmd) {
    case TEST_INIT:
        info->name = __func__;
        info->category = test_category;
        info->summary = "Test channel messages on an endpoint topic";
        info->description =
            "Test channel messages on an endpoint topic";
        return AST_TEST_NOT_RUN;
    case TEST_EXECUTE:
        break;
    }
 
    uut = ast_endpoint_create("TEST", __func__);
    ast_test_validate(test, NULL != uut);
 
    sink = stasis_message_sink_create();
    ast_test_validate(test, NULL != sink);
 
    sub = stasis_subscribe(ast_endpoint_topic(uut),
        stasis_message_sink_cb(), sink);
    ast_test_validate(test, NULL != sub);
 
    chan = ast_channel_alloc(0, AST_STATE_DOWN, "100", __func__, "100",
        "100", "default", NULL, NULL, 0, "TEST/test_res");
    ast_test_validate(test, NULL != chan);
 
    ast_endpoint_add_channel(uut, chan);
 
    actual_count = stasis_message_sink_wait_for_count(sink, 1,
        STASIS_SINK_DEFAULT_WAIT);
    ast_test_validate(test, 1 == actual_count);
 
    msg = sink->messages[0];
    type = stasis_message_type(msg);
    ast_test_validate(test, ast_endpoint_snapshot_type() == type);
    actual_snapshot = stasis_message_data(msg);
    ast_test_validate(test, 1 == actual_snapshot->num_channels);
 
    ast_endpoint_remove_channel(uut, chan);
 
    ast_hangup(chan);
    chan = NULL;
 
    expected_count = 3;
    actual_count = stasis_message_sink_wait_for_count(sink, expected_count,
        STASIS_SINK_DEFAULT_WAIT);
    ast_test_validate(test, expected_count == actual_count);
 
    for (i = 0; i < expected_count; i++) {
        msg = sink->messages[i];
        type = stasis_message_type(msg);
        if (type == ast_channel_snapshot_type()) {
            channel_index = i;
        }
        if (type == ast_endpoint_snapshot_type()) {
            endpoint_index = i;
        }
    }
    ast_test_validate(test, channel_index >= 0 && endpoint_index >= 0);
    actual_snapshot = stasis_message_data(sink->messages[endpoint_index]);
    ast_test_validate(test, 0 == actual_snapshot->num_channels);
 
    return AST_TEST_PASS;
}
 
static int unload_module(void)
{
    AST_TEST_UNREGISTER(state_changes);
    AST_TEST_UNREGISTER(cache_clear);
    AST_TEST_UNREGISTER(channel_messages);
    return 0;
}
 
static int load_module(void)
{
    AST_TEST_REGISTER(state_changes);
    AST_TEST_REGISTER(cache_clear);
    AST_TEST_REGISTER(channel_messages);
    return AST_MODULE_LOAD_SUCCESS;
}
 
AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_DEFAULT, "Endpoint stasis-related testing",
    .support_level = AST_MODULE_SUPPORT_CORE,
    .load = load_module,
    .unload = unload_module,
    .requires = "res_stasis_test",
);