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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
/*
* Ceph distributed storage system
*
* Copyright (C) 2013,2014 Cloudwatt <libre.licensing@cloudwatt.com>
* Copyright (C) 2014 Red Hat <contact@redhat.com>
*
* Author: Loic Dachary <loic@dachary.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
*/
#include <errno.h>
#include <signal.h>
#include <stdlib.h>
#include "common/Thread.h"
#include "erasure-code/ErasureCodePlugin.h"
#include "global/global_context.h"
#include "common/config_proxy.h"
#include "gtest/gtest.h"
class ErasureCodePluginRegistryTest : public ::testing::Test {
protected:
class Thread_factory : public Thread {
public:
static void cleanup(void *arg) {
ErasureCodePluginRegistry &instance = ErasureCodePluginRegistry::instance();
if (instance.lock.is_locked())
instance.lock.Unlock();
}
void *entry() override {
ErasureCodeProfile profile;
ErasureCodePluginRegistry &instance = ErasureCodePluginRegistry::instance();
ErasureCodeInterfaceRef erasure_code;
pthread_cleanup_push(cleanup, NULL);
instance.factory("hangs",
g_conf().get_val<std::string>("erasure_code_dir"),
profile, &erasure_code, &cerr);
pthread_cleanup_pop(0);
return NULL;
}
};
};
TEST_F(ErasureCodePluginRegistryTest, factory_mutex) {
ErasureCodePluginRegistry &instance = ErasureCodePluginRegistry::instance();
EXPECT_TRUE(instance.lock.TryLock());
instance.lock.Unlock();
//
// Test that the loading of a plugin is protected by a mutex.
//
useconds_t delay = 0;
const useconds_t DELAY_MAX = 20 * 1000 * 1000;
Thread_factory sleep_forever;
sleep_forever.create("sleep_forever");
do {
cout << "Trying (1) with delay " << delay << "us\n";
if (delay > 0)
usleep(delay);
if (!instance.loading)
delay = ( delay + 1 ) * 2;
} while(!instance.loading && delay < DELAY_MAX);
ASSERT_TRUE(delay < DELAY_MAX);
EXPECT_FALSE(instance.lock.TryLock());
EXPECT_EQ(0, pthread_cancel(sleep_forever.get_thread_id()));
EXPECT_EQ(0, sleep_forever.join());
}
TEST_F(ErasureCodePluginRegistryTest, all)
{
ErasureCodeProfile profile;
string directory = g_conf().get_val<std::string>("erasure_code_dir");
ErasureCodeInterfaceRef erasure_code;
ErasureCodePluginRegistry &instance = ErasureCodePluginRegistry::instance();
EXPECT_FALSE(erasure_code);
EXPECT_EQ(-EIO, instance.factory("invalid",
g_conf().get_val<std::string>("erasure_code_dir"),
profile, &erasure_code, &cerr));
EXPECT_FALSE(erasure_code);
EXPECT_EQ(-EXDEV, instance.factory("missing_version",
g_conf().get_val<std::string>("erasure_code_dir"),
profile,
&erasure_code, &cerr));
EXPECT_FALSE(erasure_code);
EXPECT_EQ(-ENOENT, instance.factory("missing_entry_point",
g_conf().get_val<std::string>("erasure_code_dir"),
profile,
&erasure_code, &cerr));
EXPECT_FALSE(erasure_code);
EXPECT_EQ(-ESRCH, instance.factory("fail_to_initialize",
g_conf().get_val<std::string>("erasure_code_dir"),
profile,
&erasure_code, &cerr));
EXPECT_FALSE(erasure_code);
EXPECT_EQ(-EBADF, instance.factory("fail_to_register",
g_conf().get_val<std::string>("erasure_code_dir"),
profile,
&erasure_code, &cerr));
EXPECT_FALSE(erasure_code);
EXPECT_EQ(0, instance.factory("example",
g_conf().get_val<std::string>("erasure_code_dir"),
profile, &erasure_code, &cerr));
EXPECT_TRUE(erasure_code.get());
ErasureCodePlugin *plugin = 0;
{
Mutex::Locker l(instance.lock);
EXPECT_EQ(-EEXIST, instance.load("example", directory, &plugin, &cerr));
EXPECT_EQ(-ENOENT, instance.remove("does not exist"));
EXPECT_EQ(0, instance.remove("example"));
EXPECT_EQ(0, instance.load("example", directory, &plugin, &cerr));
}
}
/*
* Local Variables:
* compile-command: "cd ../../../build ; make -j4 &&
* make unittest_erasure_code_plugin &&
* valgrind --tool=memcheck \
* ./bin/unittest_erasure_code_plugin \
* --gtest_filter=*.* --log-to-stderr=true --debug-osd=20"
* End:
*/
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