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asterisk/tests/test_stasis_channels.c
Joshua Colp 50ac85cb40 stasis: Segment channel snapshot to reduce creation cost. 
When a channel snapshot was created it used to be done
from scratch, copying all data (many strings). This incurs
a cost when doing so.

This change segments the channel snapshot into different
components which can be reused if unchanged from the
previous snapshot creation, reducing the cost. In normal
cases this results in some pointers being copied with
reference count being bumped, some integers being set,
and a string or two copied. The other benefit is that it
is now possible to determine if a channel snapshot update
is redundant and thus stop it before a message is published
to stasis.

The specific segments in the channel snapshot were split up
based on whether they are changed together, how often they
are changed, and their general grouping. In practice only
1 (or 0) of the segments actually get changed in normal
operation.

Invalidation is done by setting a flag on the channel when
the segment source is changed, forcing creation of a new
segment when the channel snapshot is created.

ASTERISK-28119

Change-Id: I5d7ef3df963a88ac47bc187d73c5225c315f8423
2018-11-26 12:56:24 -06:00

334 lines
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/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 2013, Digium, Inc.
*
* Matt Jordan <mjordan@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 Stasis Channel messages and objects
*
* \author\verbatim Matt Jordan <mjordan@digium.com> \endverbatim
*
* \ingroup tests
*/
/*** MODULEINFO
<depend>TEST_FRAMEWORK</depend>
<support_level>core</support_level>
***/
#include "asterisk.h"
#include "asterisk/astobj2.h"
#include "asterisk/module.h"
#include "asterisk/stasis.h"
#include "asterisk/stasis_message_router.h"
#include "asterisk/test.h"
#include "asterisk/stasis_channels.h"
#include "asterisk/channel.h"
static const char *test_category = "/stasis/channels/";
static void safe_channel_release(struct ast_channel *chan)
{
if (!chan) {
return;
}
ast_channel_release(chan);
}
AST_TEST_DEFINE(channel_blob_create)
{
struct ast_channel_blob *blob;
RAII_VAR(struct stasis_message_type *, type, NULL, ao2_cleanup);
RAII_VAR(struct stasis_message *, msg, NULL, ao2_cleanup);
RAII_VAR(struct ast_channel *, chan, NULL, safe_channel_release);
RAII_VAR(struct ast_json *, json, NULL, ast_json_unref);
RAII_VAR(struct ast_json *, bad_json, NULL, ast_json_unref);
switch (cmd) {
case TEST_INIT:
info->name = __func__;
info->category = test_category;
info->summary = "Test creation of ast_channel_blob objects";
info->description = "Test creation of ast_channel_blob objects";
return AST_TEST_NOT_RUN;
case TEST_EXECUTE:
break;
}
ast_test_validate(test, stasis_message_type_create("test-type", NULL, &type) == STASIS_MESSAGE_TYPE_SUCCESS);
chan = ast_channel_alloc(0, AST_STATE_DOWN, "100", "Alice", "100", "100", "default", NULL, NULL, 0, "TEST/Alice");
ast_channel_unlock(chan);
json = ast_json_pack("{s: s}",
"foo", "bar");
/* Off nominal creation */
ast_channel_lock(chan);
ast_test_validate(test, NULL == ast_channel_blob_create(chan, NULL, json));
/* Test for single channel */
msg = ast_channel_blob_create(chan, type, json);
ast_channel_unlock(chan);
ast_test_validate(test, NULL != msg);
blob = stasis_message_data(msg);
ast_test_validate(test, NULL != blob);
ast_test_validate(test, NULL != blob->snapshot);
ast_test_validate(test, NULL != blob->blob);
ast_test_validate(test, type == stasis_message_type(msg));
ast_test_validate(test, 1 == ao2_ref(msg, 0));
ao2_cleanup(msg);
/* Test for global channels */
msg = ast_channel_blob_create(NULL, type, json);
ast_test_validate(test, NULL != msg);
blob = stasis_message_data(msg);
ast_test_validate(test, NULL != blob);
ast_test_validate(test, NULL == blob->snapshot);
ast_test_validate(test, NULL != blob->blob);
ast_test_validate(test, type == stasis_message_type(msg));
return AST_TEST_PASS;
}
AST_TEST_DEFINE(null_blob)
{
struct ast_channel_blob *blob;
RAII_VAR(struct stasis_message_type *, type, NULL, ao2_cleanup);
RAII_VAR(struct stasis_message *, msg, NULL, ao2_cleanup);
RAII_VAR(struct ast_channel *, chan, NULL, safe_channel_release);
RAII_VAR(struct ast_json *, json, NULL, ast_json_unref);
RAII_VAR(struct ast_json *, bad_json, NULL, ast_json_unref);
switch (cmd) {
case TEST_INIT:
info->name = __func__;
info->category = test_category;
info->summary = "Test creation of ast_channel_blob objects";
info->description = "Test creation of ast_channel_blob objects";
return AST_TEST_NOT_RUN;
case TEST_EXECUTE:
break;
}
ast_test_validate(test, stasis_message_type_create("test-type", NULL, &type) == STASIS_MESSAGE_TYPE_SUCCESS);
chan = ast_channel_alloc(0, AST_STATE_DOWN, "100", "Alice", "100", "100", "default", NULL, NULL, 0, "TEST/Alice");
ast_channel_unlock(chan);
json = ast_json_pack("{s: s}",
"foo", "bar");
/* Test for single channel */
ast_channel_lock(chan);
msg = ast_channel_blob_create(chan, type, NULL);
ast_channel_unlock(chan);
ast_test_validate(test, NULL != msg);
blob = stasis_message_data(msg);
ast_test_validate(test, NULL != blob);
ast_test_validate(test, NULL != blob->snapshot);
ast_test_validate(test, ast_json_null() == blob->blob);
ast_test_validate(test, type == stasis_message_type(msg));
return AST_TEST_PASS;
}
AST_TEST_DEFINE(multi_channel_blob_create)
{
RAII_VAR(struct ast_multi_channel_blob *, blob, NULL, ao2_cleanup);
RAII_VAR(struct ast_json *, json, NULL, ast_json_unref);
RAII_VAR(struct ast_json *, bad_json, NULL, ast_json_unref);
switch (cmd) {
case TEST_INIT:
info->name = __func__;
info->category = test_category;
info->summary = "Test creation of ast_multi_channel_blob objects";
info->description = "Test creation of ast_multi_channel_blob objects";
return AST_TEST_NOT_RUN;
case TEST_EXECUTE:
break;
}
json = ast_json_pack("{s: s}",
"foo", "bar");
/* Test for single channel */
blob = ast_multi_channel_blob_create(json);
ast_test_validate(test, NULL != blob);
ast_test_validate(test, NULL != ast_multi_channel_blob_get_json(blob));
return AST_TEST_PASS;
}
AST_TEST_DEFINE(multi_channel_blob_snapshots)
{
RAII_VAR(struct ast_multi_channel_blob *, blob, NULL, ao2_cleanup);
RAII_VAR(struct ast_json *, json, NULL, ast_json_unref);
RAII_VAR(struct ast_channel *, chan_alice, NULL, safe_channel_release);
RAII_VAR(struct ast_channel *, chan_bob, NULL, safe_channel_release);
RAII_VAR(struct ast_channel *, chan_charlie, NULL, safe_channel_release);
struct ast_channel_snapshot *snapshot;
struct ao2_container *matches;
switch (cmd) {
case TEST_INIT:
info->name = __func__;
info->category = test_category;
info->summary = "Test creation of ast_multi_channel_blob objects";
info->description = "Test creation of ast_multi_channel_blob objects";
return AST_TEST_NOT_RUN;
case TEST_EXECUTE:
break;
}
json = ast_json_pack("{s: s}",
"type", "test");
chan_alice = ast_channel_alloc(0, AST_STATE_DOWN, "100", "Alice", "100", "100", "default", NULL, NULL, 0, "TEST/Alice");
ast_channel_unlock(chan_alice);
chan_bob = ast_channel_alloc(0, AST_STATE_DOWN, "200", "Bob", "200", "200", "default", NULL, NULL, 0, "TEST/Bob");
ast_channel_unlock(chan_bob);
chan_charlie = ast_channel_alloc(0, AST_STATE_DOWN, "300", "Bob", "300", "300", "default", NULL, NULL, 0, "TEST/Charlie");
ast_channel_unlock(chan_charlie);
blob = ast_multi_channel_blob_create(json);
ast_channel_lock(chan_alice);
ast_multi_channel_blob_add_channel(blob, "Caller", ast_channel_snapshot_create(chan_alice));
ast_channel_unlock(chan_alice);
ast_channel_lock(chan_bob);
ast_multi_channel_blob_add_channel(blob, "Peer", ast_channel_snapshot_create(chan_bob));
ast_channel_unlock(chan_bob);
ast_channel_lock(chan_charlie);
ast_multi_channel_blob_add_channel(blob, "Peer", ast_channel_snapshot_create(chan_charlie));
ast_channel_unlock(chan_charlie);
/* Test for unknown role */
ast_test_validate(test, NULL == ast_multi_channel_blob_get_channel(blob, "Foobar"));
/* Test for single match */
snapshot = ast_multi_channel_blob_get_channel(blob, "Caller");
ast_test_validate(test, NULL != snapshot);
ast_test_validate(test, 0 == strcmp("TEST/Alice", snapshot->base->name));
/* Test for single match, multiple possibilities */
snapshot = ast_multi_channel_blob_get_channel(blob, "Peer");
ast_test_validate(test, NULL != snapshot);
ast_test_validate(test, 0 != strcmp("TEST/Alice", snapshot->base->name));
/* Multi-match */
matches = ast_multi_channel_blob_get_channels(blob, "Peer");
ast_test_validate(test, NULL != matches);
ast_test_validate(test, 2 == ao2_container_count(matches));
snapshot = ao2_find(matches, "TEST/Bob", OBJ_KEY);
ast_test_validate(test, NULL != snapshot);
ao2_cleanup(snapshot);
snapshot = ao2_find(matches, "TEST/Charlie", OBJ_KEY);
ast_test_validate(test, NULL != snapshot);
ao2_cleanup(snapshot);
ast_test_validate(test, 1 == ao2_ref(matches, 0));
ao2_cleanup(matches);
return AST_TEST_PASS;
}
AST_TEST_DEFINE(channel_snapshot_json)
{
RAII_VAR(struct stasis_message *, msg, NULL, ao2_cleanup);
RAII_VAR(struct ast_channel *, chan, NULL, safe_channel_release);
RAII_VAR(struct ast_channel_snapshot *, snapshot, NULL, ao2_cleanup);
RAII_VAR(struct ast_json *, expected, NULL, ast_json_unref);
RAII_VAR(struct ast_json *, actual, NULL, ast_json_unref);
switch (cmd) {
case TEST_INIT:
info->name = __func__;
info->category = test_category;
info->summary = "Test creation of ast_channel_blob objects";
info->description = "Test creation of ast_channel_blob objects";
return AST_TEST_NOT_RUN;
case TEST_EXECUTE:
break;
}
ast_test_validate(test, NULL == ast_channel_snapshot_to_json(NULL, NULL));
chan = ast_channel_alloc(0, AST_STATE_DOWN, "cid_num", "cid_name", "acctcode", "exten", "context", NULL, NULL, 0, "TEST/name");
ast_channel_unlock(chan);
ast_test_validate(test, NULL != chan);
ast_channel_lock(chan);
snapshot = ast_channel_snapshot_create(chan);
ast_channel_unlock(chan);
ast_test_validate(test, NULL != snapshot);
actual = ast_channel_snapshot_to_json(snapshot, NULL);
expected = ast_json_pack("{ s: s, s: s, s: s, s: s,"
" s: { s: s, s: s, s: i },"
" s: { s: s, s: s },"
" s: { s: s, s: s },"
" s: s"
" s: o"
"}",
"name", "TEST/name",
"state", "Down",
"accountcode", "acctcode",
"id", ast_channel_uniqueid(chan),
"dialplan",
"context", "context",
"exten", "exten",
"priority", 1,
"caller",
"name", "cid_name",
"number", "cid_num",
"connected",
"name", "",
"number", "",
"language", "en",
"creationtime",
ast_json_timeval(
ast_channel_creationtime(chan), NULL));
ast_test_validate(test, ast_json_equal(expected, actual));
return AST_TEST_PASS;
}
static int unload_module(void)
{
AST_TEST_UNREGISTER(channel_blob_create);
AST_TEST_UNREGISTER(null_blob);
AST_TEST_UNREGISTER(multi_channel_blob_create);
AST_TEST_UNREGISTER(multi_channel_blob_snapshots);
AST_TEST_UNREGISTER(channel_snapshot_json);
return 0;
}
static int load_module(void)
{
AST_TEST_REGISTER(channel_blob_create);
AST_TEST_REGISTER(null_blob);
AST_TEST_REGISTER(multi_channel_blob_create);
AST_TEST_REGISTER(multi_channel_blob_snapshots);
AST_TEST_REGISTER(channel_snapshot_json);
return AST_MODULE_LOAD_SUCCESS;
}
AST_MODULE_INFO(ASTERISK_GPL_KEY, 0, "Stasis Channel Testing",
.support_level = AST_MODULE_SUPPORT_CORE,
.load = load_module,
.unload = unload_module
);
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