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oceanbase/src/logservice/palf/palf_env_impl.cpp

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/**
* Copyright (c) 2021 OceanBase
* OceanBase CE is licensed under Mulan PubL v2.
* You can use this software according to the terms and conditions of the Mulan PubL v2.
* You may obtain a copy of Mulan PubL v2 at:
* http://license.coscl.org.cn/MulanPubL-2.0
* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
* See the Mulan PubL v2 for more details.
*/
#include "palf_env_impl.h"
#include <string.h>
#include "lib/lock/ob_spin_lock.h"
#include "lib/ob_define.h"
#include "lib/ob_errno.h"
#include "lib/oblog/ob_log.h"
#include "lib/time/ob_time_utility.h"
#include "lib/utility/ob_macro_utils.h"
#include "share/allocator/ob_tenant_mutil_allocator.h"
#include "share/config/ob_server_config.h"
#include "share/ob_errno.h"
#include "share/ob_occam_thread_pool.h"
#include "log_define.h"
#include "palf_handle_impl_guard.h" // IPalfHandleImplGuard
#include "palf_handle.h"
#include "log_loop_thread.h"
#include "log_rpc.h"
#include "log_block_pool_interface.h"
namespace oceanbase
{
using namespace common;
using namespace share;
namespace palf
{
PalfHandleImpl *PalfHandleImplFactory::alloc()
{
return MTL_NEW(PalfHandleImpl, "palf_env");
}
void PalfHandleImplFactory::free(IPalfHandleImpl *palf_handle_impl)
{
MTL_DELETE(IPalfHandleImpl, "palf_env", palf_handle_impl);
}
PalfHandleImpl *PalfHandleImplAlloc::alloc_value()
{
return NULL;
}
void PalfHandleImplAlloc::free_value(IPalfHandleImpl *palf_handle_impl)
{
PalfHandleImplFactory::free(palf_handle_impl);
palf_handle_impl = NULL;
}
PalfHandleImplAlloc::Node *PalfHandleImplAlloc::alloc_node(IPalfHandleImpl *palf_handle_impl)
{
UNUSED(palf_handle_impl);
return op_reclaim_alloc(Node);
}
void PalfHandleImplAlloc::free_node(PalfHandleImplAlloc::Node *node)
{
op_reclaim_free(node);
node = NULL;
}
int PalfDiskOptionsWrapper::init(const PalfDiskOptions &disk_opts)
{
int ret = OB_SUCCESS;
if (false == disk_opts.is_valid()) {
ret = OB_INVALID_ARGUMENT;
} else {
disk_opts_for_recycling_blocks_ = disk_opts_for_stopping_writing_ = disk_opts;
status_ = Status::NORMAL_STATUS;
}
return ret;
}
void PalfDiskOptionsWrapper::reset()
{
ObSpinLockGuard guard(disk_opts_lock_);
disk_opts_for_recycling_blocks_.reset();
disk_opts_for_stopping_writing_.reset();
status_ = Status::INVALID_STATUS;
}
int PalfDiskOptionsWrapper::update_disk_options(const PalfDiskOptions &disk_opts_for_recycling_blocks)
{
int ret = OB_SUCCESS;
ObSpinLockGuard guard(disk_opts_lock_);
return update_disk_options_not_guarded_by_lock_(disk_opts_for_recycling_blocks);
}
void PalfDiskOptionsWrapper::change_to_normal()
{
ObSpinLockGuard guard(disk_opts_lock_);
status_ = Status::NORMAL_STATUS;
disk_opts_for_stopping_writing_ = disk_opts_for_recycling_blocks_;
PALF_LOG(INFO, "change_to_normal", KPC(this));
}
int PalfDiskOptionsWrapper::update_disk_options_not_guarded_by_lock_(const PalfDiskOptions &disk_opts_for_recycling_blocks)
{
int ret = OB_SUCCESS;
int64_t curr_stop_write_limit_size =
disk_opts_for_stopping_writing_.log_disk_usage_limit_size_ * disk_opts_for_stopping_writing_.log_disk_utilization_limit_threshold_;
int64_t next_stop_write_limit_size =
disk_opts_for_recycling_blocks.log_disk_usage_limit_size_ * disk_opts_for_recycling_blocks.log_disk_utilization_limit_threshold_;
if (false == disk_opts_for_recycling_blocks.is_valid()) {
ret = OB_INVALID_ARGUMENT;
} else if (Status::SHRINKING_STATUS == status_) {
ret = OB_STATE_NOT_MATCH;
PALF_LOG(WARN, "don't support shrink log disk concurrently", K(ret), KPC(this));
} else if (disk_opts_for_recycling_blocks_ == disk_opts_for_recycling_blocks) {
PALF_LOG(INFO, "no need update disk options", K(ret), K(disk_opts_for_recycling_blocks_), K(disk_opts_for_recycling_blocks));
} else if (curr_stop_write_limit_size > next_stop_write_limit_size) {
status_ = Status::SHRINKING_STATUS;
// In process of shrinking, to avoid stopping writing, 'disk_opts_for_stopping_writing_' is still
// an original value, update it with 'disk_opts_for_recycling_blocks' until there is no possibility
// caused stopping writing.
disk_opts_for_recycling_blocks_ = disk_opts_for_recycling_blocks;
} else {
status_ = Status::NORMAL_STATUS;
disk_opts_for_recycling_blocks_ = disk_opts_for_stopping_writing_ = disk_opts_for_recycling_blocks;
PALF_LOG(INFO, "update_disk_options_not_guarded_by_lock_ success", K(curr_stop_write_limit_size), K(next_stop_write_limit_size));
}
return ret;
}
PalfEnvImpl::PalfEnvImpl() : palf_meta_lock_(common::ObLatchIds::PALF_ENV_LOCK),
log_alloc_mgr_(NULL),
log_block_pool_(NULL),
fetch_log_engine_(),
log_rpc_(),
cb_thread_pool_(),
log_io_worker_(),
block_gc_timer_task_(),
log_updater_(),
disk_options_wrapper_(),
check_disk_print_log_interval_(OB_INVALID_TIMESTAMP),
self_(),
palf_handle_impl_map_(64), // 指定min_size=64
last_palf_epoch_(0),
diskspace_enough_(true),
tenant_id_(0),
is_inited_(false),
is_running_(false)
{
log_dir_[0] = '\0';
tmp_log_dir_[0] = '\0';
}
PalfEnvImpl::~PalfEnvImpl()
{
destroy();
}
int PalfEnvImpl::init(
const PalfOptions &options,
const char *base_dir, const ObAddr &self,
const int64_t cluster_id,
const int64_t tenant_id,
rpc::frame::ObReqTransport *transport,
common::ObILogAllocator *log_alloc_mgr,
ILogBlockPool *log_block_pool)
{
int ret = OB_SUCCESS;
int pret = 0;
// TODO by runlin: configurable
log_io_worker_config_.io_worker_num_ = 1;
log_io_worker_config_.io_queue_capcity_ = 100 * 1024;
log_io_worker_config_.batch_width_ = 8;
log_io_worker_config_.batch_depth_ = PALF_SLIDING_WINDOW_SIZE;
const int64_t io_cb_num = PALF_SLIDING_WINDOW_SIZE * 128;
if (is_inited_) {
ret = OB_INIT_TWICE;
PALF_LOG(ERROR, "PalfEnvImpl is inited twiced", K(ret));
} else if (OB_ISNULL(base_dir) || !self.is_valid() || NULL == transport
|| OB_ISNULL(log_alloc_mgr) || OB_ISNULL(log_block_pool)) {
ret = OB_INVALID_ARGUMENT;
PALF_LOG(ERROR, "invalid arguments", K(ret), KP(transport), K(base_dir), K(self), KP(transport),
KP(log_alloc_mgr), KP(log_block_pool));
} else if (OB_FAIL(fetch_log_engine_.init(this, log_alloc_mgr))) {
PALF_LOG(ERROR, "FetchLogEngine init failed", K(ret));
} else if (OB_FAIL(log_rpc_.init(self, cluster_id, tenant_id, transport))) {
PALF_LOG(ERROR, "LogRpc init failed", K(ret));
} else if (OB_FAIL(cb_thread_pool_.init(io_cb_num, this))) {
PALF_LOG(ERROR, "LogIOTaskThreadPool init failed", K(ret));
} else if (OB_FAIL(log_io_worker_.init(log_io_worker_config_,
tenant_id,
cb_thread_pool_.get_tg_id(),
log_alloc_mgr, this))) {
PALF_LOG(ERROR, "LogIOWorker init failed", K(ret));
} else if (OB_FAIL(block_gc_timer_task_.init(this))) {
PALF_LOG(ERROR, "ObCheckLogBlockCollectTask init failed", K(ret));
} else if ((pret = snprintf(log_dir_, MAX_PATH_SIZE, "%s", base_dir)) && false) {
ret = OB_ERR_UNEXPECTED;
} else if ((pret = snprintf(tmp_log_dir_, MAX_PATH_SIZE, "%s/tmp_dir", log_dir_)) && false) {
ret = OB_ERR_UNEXPECTED;
PALF_LOG(ERROR, "error unexpected", K(ret));
} else if (pret < 0 || pret >= MAX_PATH_SIZE) {
ret = OB_BUF_NOT_ENOUGH;
PALF_LOG(ERROR, "construct log path failed", K(ret), K(pret));
} else if (OB_FAIL(palf_handle_impl_map_.init("LOG_HASH_MAP", tenant_id))) {
PALF_LOG(ERROR, "palf_handle_impl_map_ init failed", K(ret));
} else if (OB_FAIL(log_loop_thread_.init(this))) {
PALF_LOG(ERROR, "log_loop_thread_ init failed", K(ret));
} else if (OB_FAIL(
election_timer_.init_and_start(1, 1_ms, "ElectTimer"))) { // just one worker thread
PALF_LOG(ERROR, "election_timer_ init failed", K(ret));
} else if (OB_FAIL(election::GLOBAL_INIT_ELECTION_MODULE())) {
PALF_LOG(ERROR, "global init election module failed", K(ret));
} else if (OB_FAIL(disk_options_wrapper_.init(options.disk_options_))) {
PALF_LOG(ERROR, "disk_options_wrapper_ init failed", K(ret));
} else if (OB_FAIL(log_updater_.init(this))) {
PALF_LOG(ERROR, "LogUpdater init failed", K(ret));
} else {
log_alloc_mgr_ = log_alloc_mgr;
log_block_pool_ = log_block_pool;
self_ = self;
tenant_id_ = tenant_id;
is_inited_ = true;
is_running_ = true;
PALF_LOG(INFO, "PalfEnvImpl init success", K(ret), K(self_), KPC(this));
}
if (OB_FAIL(ret) && OB_INIT_TWICE != ret) {
destroy();
}
return ret;
}
int PalfEnvImpl::start()
{
int ret = OB_SUCCESS;
if (IS_NOT_INIT) {
ret = OB_NOT_INIT;
} else if (OB_FAIL(scan_all_palf_handle_impl_director_())) {
PALF_LOG(WARN, "scan_all_palf_handle_impl_director_ failed", K(ret));
} else if (OB_FAIL(cb_thread_pool_.start())) {
PALF_LOG(ERROR, "LogIOTaskThreadPool start failed", K(ret));
} else if (OB_FAIL(log_io_worker_.start())) {
PALF_LOG(ERROR, "LogIOWorker start failed", K(ret));
} else if (OB_FAIL(block_gc_timer_task_.start())) {
PALF_LOG(ERROR, "FileCollectTimerTask start failed", K(ret));
} else if (OB_FAIL(fetch_log_engine_.start())) {
PALF_LOG(ERROR, "FetchLogEngine start failed", K(ret));
} else if (OB_FAIL(log_loop_thread_.start())) {
PALF_LOG(ERROR, "log_loop_thread_ start failed", K(ret));
} else if (OB_FAIL(log_updater_.start())) {
PALF_LOG(ERROR, "LogUpdater start failed", K(ret));
} else {
is_running_ = true;
PALF_LOG(INFO, "PalfEnv start success", K(ret));
}
return ret;
}
void PalfEnvImpl::stop()
{
if (is_running_) {
PALF_LOG(INFO, "PalfEnvImpl begin stop", KPC(this));
is_running_ = false;
log_io_worker_.stop();
cb_thread_pool_.stop();
block_gc_timer_task_.stop();
fetch_log_engine_.stop();
log_loop_thread_.stop();
log_updater_.stop();
PALF_LOG(INFO, "PalfEnvImpl stop success", KPC(this));
}
}
void PalfEnvImpl::wait()
{
PALF_LOG(INFO, "PalfEnvImpl begin stop", KPC(this));
log_io_worker_.wait();
cb_thread_pool_.wait();
block_gc_timer_task_.wait();
fetch_log_engine_.wait();
log_loop_thread_.wait();
log_updater_.wait();
PALF_LOG(INFO, "PalfEnvImpl wait success", KPC(this));
}
void PalfEnvImpl::destroy()
{
PALF_LOG_RET(WARN, OB_SUCCESS, "PalfEnvImpl destroy", KPC(this));
is_running_ = false;
is_inited_ = false;
palf_handle_impl_map_.destroy();
log_io_worker_.destroy();
cb_thread_pool_.destroy();
log_loop_thread_.destroy();
block_gc_timer_task_.destroy();
fetch_log_engine_.destroy();
log_updater_.destroy();
log_rpc_.destroy();
log_alloc_mgr_ = NULL;
self_.reset();
log_dir_[0] = '\0';
tmp_log_dir_[0] = '\0';
disk_options_wrapper_.reset();
}
// NB: not thread safe
int PalfEnvImpl::create_palf_handle_impl(const int64_t palf_id,
const AccessMode &access_mode,
const PalfBaseInfo &palf_base_info,
IPalfHandleImpl *&palf_handle_impl)
{
int ret = OB_SUCCESS;
WLockGuard guard(palf_meta_lock_);
if (IS_NOT_INIT) {
ret = OB_NOT_INIT;
PALF_LOG(WARN, "PalfEnvImpl is not inited", K(ret));
} else if (OB_FAIL(create_palf_handle_impl_(palf_id, access_mode, palf_base_info,
NORMAL_REPLICA, palf_handle_impl))) {
palf_handle_impl = NULL;
} else {
PALF_LOG(INFO, "PalfEnvImpl create_palf_handle_impl finished", K(ret), K(palf_id), K(access_mode),
K(palf_base_info), KPC(this));
}
return ret;
}
int PalfEnvImpl::create_palf_handle_impl_(const int64_t palf_id,
const AccessMode &access_mode,
const PalfBaseInfo &palf_base_info,
const LogReplicaType replica_type,
IPalfHandleImpl *&ipalf_handle_impl)
{
int ret = OB_SUCCESS;
int pret = 0;
char base_dir[MAX_PATH_SIZE] = {'\0'};
PalfHandleImpl *palf_handle_impl = NULL;
LSKey hash_map_key(palf_id);
const int64_t palf_epoch = ATOMIC_AAF(&last_palf_epoch_, 1);
if (IS_NOT_INIT) {
ret = OB_NOT_INIT;
PALF_LOG(WARN, "PalfEnvImpl is not running", K(ret));
} else if (!is_running_) {
ret = OB_NOT_RUNNING;
PALF_LOG(WARN, "PalfEnvImpl is not running", K(ret));
} else if (false == is_valid_palf_id(palf_id)) {
ret = OB_INVALID_ARGUMENT;
PALF_LOG(WARN, "invalid arguments", K(ret), K(palf_id));
} else if (OB_ENTRY_EXIST == palf_handle_impl_map_.contains_key(hash_map_key)) {
ret = OB_ENTRY_EXIST;
PALF_LOG(WARN, "palf_handle has exist, ignore this request", K(ret), K(palf_id));
} else if (false == check_can_create_palf_handle_impl_()) {
ret = OB_LOG_OUTOF_DISK_SPACE;
PALF_LOG(ERROR, "PalfEnv can not hold more instance", K(ret), KPC(this), K(palf_id));
} else if (0 > (pret = snprintf(base_dir, MAX_PATH_SIZE, "%s/%ld", log_dir_, palf_id))) {
ret = OB_ERR_UNEXPECTED;
PALF_LOG(ERROR, "snprinf failed", K(pret), K(palf_id));
} else if (OB_FAIL(create_directory(base_dir))) {
PALF_LOG(WARN, "prepare_directory_for_creating_ls failed!!!", K(ret), K(palf_id));
} else if (NULL == (palf_handle_impl = PalfHandleImplFactory::alloc())) {
ret = OB_ALLOCATE_MEMORY_FAILED;
PALF_LOG(WARN, "alloc palf_handle_impl failed", K(ret));
} else if (OB_FAIL(palf_handle_impl->init(palf_id, access_mode, palf_base_info, replica_type,
&fetch_log_engine_, base_dir, log_alloc_mgr_, log_block_pool_, &log_rpc_, &log_io_worker_,
this, self_, &election_timer_, palf_epoch))) {
PALF_LOG(ERROR, "IPalfHandleImpl init failed", K(ret), K(palf_id));
// NB: always insert value into hash map finally.
} else if (OB_FAIL(palf_handle_impl_map_.insert_and_get(hash_map_key, palf_handle_impl))) {
PALF_LOG(WARN, "palf_handle_impl_map_ insert_and_get failed", K(ret), K(palf_id));
} else {
palf_handle_impl->set_scan_disk_log_finished();
ipalf_handle_impl = palf_handle_impl;
}
if (OB_FAIL(ret) && NULL != palf_handle_impl) {
// if 'palf_handle_impl' has not been inserted into hash map,
// need reclaim manually.
PalfHandleImplFactory::free(palf_handle_impl);
palf_handle_impl = NULL;
if (OB_ENTRY_NOT_EXIST == palf_handle_impl_map_.contains_key(hash_map_key)) {
remove_directory(base_dir);
}
}
PALF_LOG(INFO, "PalfEnvImpl create_palf_handle_impl_ finished", K(ret), K(palf_id),
K(access_mode), K(palf_base_info), K(replica_type), KPC(this));
return ret;
}
int PalfEnvImpl::remove_palf_handle_impl(const int64_t palf_id)
{
int ret = OB_SUCCESS;
WLockGuard guard(palf_meta_lock_);
if (IS_NOT_INIT) {
ret = OB_NOT_INIT;
PALF_LOG(ERROR, "PalfEnvImpl is not inited", K(ret));
} else if (OB_FAIL(remove_palf_handle_impl_from_map_not_guarded_by_lock_(palf_id))) {
PALF_LOG(WARN, "palf instance not exist", K(ret), KPC(this), K(palf_id));
} else if (OB_FAIL(wait_until_reference_count_to_zero_(palf_id))) {
PALF_LOG(WARN, "wait_until_reference_count_to_zero_ failed", K(ret), KPC(this), K(palf_id));
} else {
}
if (OB_ENTRY_NOT_EXIST == ret) {
ret = OB_SUCCESS;
}
return ret;
}
int PalfEnvImpl::get_palf_handle_impl(const int64_t palf_id,
IPalfHandleImplGuard &palf_handle_impl_guard)
{
int ret = OB_SUCCESS;
IPalfHandleImpl *palf_handle_impl = NULL;
if (OB_FAIL(get_palf_handle_impl(palf_id, palf_handle_impl))) {
PALF_LOG(TRACE, "get_palf_handle_impl failed", K(ret), K(palf_id));
} else {
palf_handle_impl_guard.palf_env_impl_ = this;
palf_handle_impl_guard.palf_handle_impl_ = palf_handle_impl;
palf_handle_impl_guard.palf_id_ = palf_id;
PALF_LOG(TRACE, "get_palf_handle_impl success", K(palf_id), K(palf_handle_impl_guard));
// do nothing
}
return ret;
}
int PalfEnvImpl::get_palf_handle_impl(const int64_t palf_id,
IPalfHandleImpl *&ipalf_handle_impl)
{
int ret = OB_SUCCESS;
LSKey hash_map_key(palf_id);
IPalfHandleImpl *palf_handle_impl = NULL;
if (false == is_valid_palf_id(palf_id)) {
ret = OB_INVALID_ARGUMENT;
PALF_LOG(ERROR, "Invalid argument!!!", K(ret), K(palf_id));
} else if (OB_FAIL(palf_handle_impl_map_.get(hash_map_key, palf_handle_impl))) {
PALF_LOG(TRACE, "get from map failed", K(ret), K(palf_id), K(palf_handle_impl));
} else if (false == palf_handle_impl->check_can_be_used()) {
ret = OB_ENTRY_NOT_EXIST;
} else {
ipalf_handle_impl = palf_handle_impl;
}
if (OB_FAIL(ret) && NULL != palf_handle_impl) {
revert_palf_handle_impl(palf_handle_impl);
}
return ret;
}
void PalfEnvImpl::revert_palf_handle_impl(IPalfHandleImpl *ipalf_handle_impl)
{
if (NULL != ipalf_handle_impl) {
palf_handle_impl_map_.revert(ipalf_handle_impl);
}
}
int PalfEnvImpl::scan_all_palf_handle_impl_director_()
{
int ret = OB_SUCCESS;
ObTimeGuard guard("PalfEnvImplStart", 0);
// TODO by runlin: how to avoid modify 'log_disk_usage_limit_size_' after restart?
ReloadPalfHandleImplFunctor functor(this);
if (OB_FAIL(scan_dir(log_dir_, functor))) {
PALF_LOG(WARN, "scan_dir failed", K(ret));
} else {
guard.click("scan_dir");
PALF_LOG(INFO, "scan_all_palf_handle_impl_director_ success", K(ret), K(log_dir_), K(guard));
}
return ret;
}
int PalfEnvImpl::create_directory(const char *base_dir)
{
int ret = OB_SUCCESS;
int pret = 0;
const mode_t mode = S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH;
char tmp_base_dir[MAX_PATH_SIZE] = {'\0'};
char log_dir[MAX_PATH_SIZE] = {'\0'};
char meta_dir[MAX_PATH_SIZE] = {'\0'};
if (0 > (pret = snprintf(tmp_base_dir, MAX_PATH_SIZE, "%s.tmp", base_dir))) {
ret = OB_ERR_UNEXPECTED;
PALF_LOG(ERROR, "snprinf failed", K(pret), K(base_dir));
} else if (0 > (pret = snprintf(log_dir, MAX_PATH_SIZE, "%s/log", tmp_base_dir))) {
ret = OB_ERR_UNEXPECTED;
PALF_LOG(ERROR, "snprinf failed", K(pret), K(base_dir));
} else if (0 > (pret = snprintf(meta_dir, MAX_PATH_SIZE, "%s/meta", tmp_base_dir))) {
ret = OB_ERR_UNEXPECTED;
PALF_LOG(ERROR, "snprinf failed", K(pret), K(base_dir));
} else if (-1 == (::mkdir(tmp_base_dir, mode))) {
ret = convert_sys_errno();
PALF_LOG(WARN, "mkdir failed", K(ret), K(errno), K(tmp_base_dir), K(base_dir));
} else if (-1 == (::mkdir(log_dir, mode))) {
ret = convert_sys_errno();
PALF_LOG(WARN, "mkdir failed", K(ret), K(errno), K(tmp_base_dir), K(base_dir));
} else if (-1 == (::mkdir(meta_dir, mode))) {
ret = convert_sys_errno();
PALF_LOG(WARN, "mkdir failed", K(ret), K(errno), K(tmp_base_dir), K(base_dir));
} else if (-1 == (::rename(tmp_base_dir, base_dir))) {
ret = OB_ERR_UNEXPECTED;
PALF_LOG(ERROR, "rename tmp dir to normal dir failed", K(ret), K(errno), K(tmp_base_dir), K(base_dir));
} else if (OB_FAIL(FileDirectoryUtils::fsync_dir(log_dir_))) {
PALF_LOG(ERROR, "fsync_dir failed", K(ret), K(errno), K(tmp_base_dir), K(base_dir));
} else {
PALF_LOG(INFO, "prepare_directory_for_creating_ls success", K(ret), K(base_dir));
}
return ret;
}
// step:
// 1. rename log directory to tmp directory.
// 2. delete tmp directory.
// NB: '%s.tmp' is invalid block or invalid directory, before the restart phash of PalfEnvImpl,
// need delete thses tmp block or directory.
int PalfEnvImpl::remove_directory(const char *log_dir)
{
int ret = OB_SUCCESS;
int pret = 0;
char tmp_log_dir[MAX_PATH_SIZE] = {'\0'};
if (0 > (pret = snprintf(tmp_log_dir, MAX_PATH_SIZE, "%s.tmp", log_dir))) {
ret = OB_ERR_UNEXPECTED;
PALF_LOG(ERROR, "snprintf failed", K(ret), K(pret), K(log_dir), K(tmp_log_dir));
} else if (-1 == ::rename(log_dir, tmp_log_dir)) {
ret = convert_sys_errno();
PALF_LOG(ERROR, "rename log dir to tmp dir failed", K(ret), K(errno), K(tmp_log_dir), K(log_dir));
} else if (OB_FAIL(remove_directory_rec(tmp_log_dir, log_block_pool_))) {
PALF_LOG(WARN, "remove_directory_rec failed", K(ret), K(log_dir), K(errno));
} else if (OB_FAIL(FileDirectoryUtils::fsync_dir(log_dir_))) {
PALF_LOG(ERROR, "fsync_dir failed", K(ret), KPC(this), K(log_dir));
} else {
PALF_LOG(WARN, "remove success", K(ret), K(log_dir));
}
return ret;
}
PalfEnvImpl::LogGetRecycableFileCandidate::LogGetRecycableFileCandidate()
: id_(-1),
min_block_id_(LOG_INVALID_BLOCK_ID),
min_block_max_scn_(),
min_using_block_id_(LOG_INVALID_BLOCK_ID),
oldest_palf_id_(INVALID_PALF_ID),
oldest_block_scn_(),
ret_code_(OB_SUCCESS)
{}
PalfEnvImpl::LogGetRecycableFileCandidate::~LogGetRecycableFileCandidate()
{
ret_code_ = OB_SUCCESS;
min_using_block_id_ = LOG_INVALID_BLOCK_ID;
min_block_max_scn_.reset();
min_block_id_ = LOG_INVALID_BLOCK_ID;
oldest_palf_id_ = INVALID_PALF_ID;
oldest_block_scn_.reset();
id_ = -1;
}
bool PalfEnvImpl::LogGetRecycableFileCandidate::operator()(const LSKey &palf_id, IPalfHandleImpl *palf_handle_impl)
{
bool bool_ret = true;
if (NULL == palf_handle_impl) {
PALF_LOG_RET(ERROR, OB_ERR_UNEXPECTED, "the value in hashmap is NULL, unexpected error", K(palf_id), KP(palf_handle_impl));
bool_ret = false;
} else {
int ret = OB_SUCCESS;
const LSN base_lsn = palf_handle_impl->get_base_lsn_used_for_block_gc();
const block_id_t min_using_block_id = lsn_2_block(base_lsn, PALF_BLOCK_SIZE);
block_id_t min_block_id = LOG_INVALID_BLOCK_ID;
SCN min_block_max_scn;
// OB_ENTRY_NOT_EXIST means there is not any block;
// OB_NO_SUCH_FILE_OR_DIRECTORY means there is concurrently with rebuild.
// OB_ERR_OUT_OF_UPPER_BOUND means there is one block
auto need_skip_by_ret = [](const int ret ){
return OB_ENTRY_NOT_EXIST == ret || OB_NO_SUCH_FILE_OR_DIRECTORY == ret
|| OB_ERR_OUT_OF_UPPER_BOUND == ret;
};
if (false == base_lsn.is_valid()) {
PALF_LOG(WARN, "base_lsn is invalid", K(base_lsn), KPC(palf_handle_impl));
} else if (OB_FAIL(palf_handle_impl->get_min_block_info_for_gc(min_block_id, min_block_max_scn))
&& !need_skip_by_ret(ret)) {
ret_code_ = ret;
bool_ret = false;
PALF_LOG(WARN, "LogGetRecycableFileCandidate get_min_block_info_for_gc failed", K(ret), K(palf_id));
// recycable conditions:
// 1. current palf_handle_impl must have some block can be recycable;
// 2. current palf_handle_impl must have older blocks(at least two blocks).
// Always keep there are at least two blocks in range [begin_lsn, base_lsn], because for restart, we will read
// first uncommitted log before base_lsn.
} else if (need_skip_by_ret(ret)
|| min_using_block_id < min_block_id
|| min_using_block_id - min_block_id < 2) {
PALF_LOG(TRACE, "can not recycle blocks, need keep at least two blocks or has been concurrently"
" with rebuild, skip it",
K(ret), KPC(palf_handle_impl), K(min_block_id), K(min_using_block_id));
} else if (min_block_max_scn_.is_valid() && min_block_max_scn_ < min_block_max_scn) {
PALF_LOG(TRACE, "current palf_handle_impl is not older than previous, skip it", K(min_block_max_scn),
K(min_block_max_scn_), KPC(palf_handle_impl), K(min_block_id));
} else {
id_ = palf_id.id_;
min_block_id_ = min_block_id;
min_block_max_scn_ = min_block_max_scn;
min_using_block_id_ = min_using_block_id;
PALF_LOG(TRACE, "can be recycable palf_handle_impl", K(id_), K(min_block_id_), K(min_using_block_id_),
K(min_block_max_scn_), K(base_lsn));
}
if (min_block_max_scn.is_valid() && (!oldest_block_scn_.is_valid() || oldest_block_scn_ > min_block_max_scn)) {
oldest_block_scn_ = min_block_max_scn;
oldest_palf_id_ = palf_id.id_;
}
}
return bool_ret;
}
int PalfEnvImpl::try_recycle_blocks()
{
int ret = OB_SUCCESS;
PalfDiskOptions disk_opts_for_stopping_writing;
PalfDiskOptions disk_opts_for_recycling_blocks;
PalfDiskOptionsWrapper::Status status = PalfDiskOptionsWrapper::Status::INVALID_STATUS;
disk_options_wrapper_.get_disk_opts(disk_opts_for_stopping_writing,
disk_opts_for_recycling_blocks,
status);
int64_t total_used_size_byte = 0;
int64_t total_size_to_recycle_blocks = disk_opts_for_recycling_blocks.log_disk_usage_limit_size_;
int64_t total_size_to_stop_write = disk_opts_for_stopping_writing.log_disk_usage_limit_size_;
int64_t palf_id = 0;
int64_t maximum_used_size = 0;
if (IS_NOT_INIT) {
ret = OB_NOT_INIT;
} else if (OB_FAIL(get_disk_usage_(total_used_size_byte, palf_id, maximum_used_size))) {
PALF_LOG(WARN, "get_disk_usage_ failed", K(ret), KPC(this));
} else {
const int64_t usable_disk_size_to_recycle_blocks =
total_size_to_recycle_blocks
* disk_opts_for_recycling_blocks.log_disk_utilization_threshold_ / 100LL;
const int64_t usable_disk_limit_size_to_stop_writing =
total_size_to_stop_write
* disk_opts_for_stopping_writing.log_disk_utilization_limit_threshold_ / 100LL;
const bool need_recycle =
usable_disk_size_to_recycle_blocks > total_used_size_byte ? false : true;
const bool is_shrinking = disk_options_wrapper_.is_shrinking();
// Assume that, recycle speed is higher than write speed, therefor, the abnormal case
// is that, after each 'recycle_blocks_', the 'total_used_size_byte' is one PALF_BLOCK_SIZE
// more than 'usable_disk_size'.
const bool curr_diskspace_enough =
usable_disk_limit_size_to_stop_writing > total_used_size_byte ? true : false;
constexpr int64_t MB = 1024 * 1024LL;
// step1. change SHRINKING_STATUS to normal
// 1. when there is no possibility to stop writing,
// 2. the snapshot of status is SHRINKING_STATUS.
bool has_recycled = false;
int64_t oldest_palf_id = INVALID_PALF_ID;
if (OB_SUCC(ret) && PalfDiskOptionsWrapper::Status::SHRINKING_STATUS == status) {
if (total_used_size_byte < usable_disk_size_to_recycle_blocks) {
disk_options_wrapper_.change_to_normal();
PALF_LOG(INFO, "change_to_normal success", K(disk_options_wrapper_),
K(total_used_size_byte), K(usable_disk_size_to_recycle_blocks));
}
}
SCN oldest_scn;
// step2. try recycle blocks
if (true == need_recycle) {
if (OB_FAIL(recycle_blocks_(has_recycled, oldest_palf_id, oldest_scn))) {
PALF_LOG(WARN, "recycle_blocks_ failed", K(usable_disk_size_to_recycle_blocks),
K(total_used_size_byte), KPC(this));
}
}
// step3. reset diskspace_enough_.
if (diskspace_enough_ != curr_diskspace_enough) {
ATOMIC_STORE(&diskspace_enough_, curr_diskspace_enough);
}
if ((true == need_recycle && false == has_recycled && false == is_shrinking) || false == diskspace_enough_) {
int tmp_ret = OB_LOG_OUTOF_DISK_SPACE;
LOG_DBA_ERROR(OB_LOG_OUTOF_DISK_SPACE, "msg", "log disk space is almost full", "ret", tmp_ret,
"total_size(MB)", disk_opts_for_recycling_blocks.log_disk_usage_limit_size_/MB,
"used_size(MB)", total_used_size_byte/MB,
"used_percent(%)", (total_used_size_byte* 100) / (disk_opts_for_recycling_blocks.log_disk_usage_limit_size_ + 1),
"warn_size(MB)", (total_size_to_recycle_blocks*disk_opts_for_recycling_blocks.log_disk_utilization_threshold_)/100/MB,
"warn_percent(%)", disk_opts_for_recycling_blocks.log_disk_utilization_threshold_,
"limit_size(MB)", (total_size_to_recycle_blocks*disk_opts_for_recycling_blocks.log_disk_utilization_limit_threshold_)/100/MB,
"limit_percent(%)", disk_opts_for_recycling_blocks.log_disk_utilization_limit_threshold_,
"maximum_used_size(MB)", maximum_used_size/MB,
"maximum_log_stream", palf_id,
"oldest_log_stream", oldest_palf_id,
"oldest_scn", oldest_scn);
}
(void)remove_stale_incomplete_palf_();
}
return ret;
}
bool PalfEnvImpl::check_disk_space_enough()
{
return true == ATOMIC_LOAD(&diskspace_enough_);
}
PalfEnvImpl::GetTotalUsedDiskSpace::GetTotalUsedDiskSpace()
: total_used_disk_space_(0), maximum_used_size_(0), palf_id_(INVALID_PALF_ID) {}
PalfEnvImpl::GetTotalUsedDiskSpace::~GetTotalUsedDiskSpace() {}
bool PalfEnvImpl::GetTotalUsedDiskSpace::operator() (const LSKey &ls_key, IPalfHandleImpl *palf_handle_impl)
{
bool bool_ret = true;
if (NULL == palf_handle_impl) {
ret_code_ = OB_ERR_UNEXPECTED;
bool_ret = false;
} else {
constexpr int64_t MB = 1024 * 1024;
const int64_t used_size = palf_handle_impl->get_total_used_disk_space();
if (used_size >= maximum_used_size_) {
maximum_used_size_ = used_size;
palf_id_ = ls_key.id_;
}
total_used_disk_space_ += palf_handle_impl->get_total_used_disk_space();
PALF_LOG(TRACE, "get_total_used_disk_space success", K(ls_key), "total_used_disk_space(MB):", total_used_disk_space_/MB);
}
return bool_ret;
}
PalfEnvImpl::RemoveStaleIncompletePalfFunctor::RemoveStaleIncompletePalfFunctor(PalfEnvImpl *palf_env_impl)
: palf_env_impl_(palf_env_impl)
{}
PalfEnvImpl::RemoveStaleIncompletePalfFunctor::~RemoveStaleIncompletePalfFunctor()
{
palf_env_impl_ = NULL;
}
int PalfEnvImpl::RemoveStaleIncompletePalfFunctor::func(const dirent *entry)
{
int ret = OB_SUCCESS;
char file_name[OB_MAX_FILE_NAME_LENGTH] = {'\0'};
const char *d_name = entry->d_name;
MEMCPY(file_name, d_name, strlen(d_name));
char *tmp = strtok(file_name, "_");
char *timestamp_str = NULL;
if (NULL == tmp || NULL == (timestamp_str = strtok(NULL, "_"))) {
ret = OB_ERR_UNEXPECTED;
PALF_LOG(WARN, "unexpected format", K(ret), K(tmp), K(file_name));
} else {
int64_t timestamp = atol(timestamp_str);
int64_t current_timestamp = ObTimeUtility::current_time();
int64_t delta = current_timestamp - timestamp;
constexpr int64_t week_us = 7 * 24 * 60 * 60 * 1000 * 1000ll;
if (delta <= week_us) {
PALF_LOG(TRACE, "no need remove this incomplet dir", K(d_name), K(delta),
K(timestamp), K(timestamp_str), K(current_timestamp));
} else {
char path[OB_MAX_FILE_NAME_LENGTH] = {'\0'};
int pret = OB_SUCCESS;
if (0 > (pret = snprintf(path, MAX_PATH_SIZE, "%s/%s", palf_env_impl_->tmp_log_dir_, d_name))) {
ret = OB_ERR_UNEXPECTED;
PALF_LOG(WARN, "snprintf failed", K(ret), K(file_name), K(d_name));
} else if (OB_FAIL(FileDirectoryUtils::delete_directory_rec(path))) {
PALF_LOG(WARN, "delete_directory_rec failed", K(ret), K(file_name), K(path), K(entry->d_name), K(timestamp_str));
} else {
PALF_LOG(WARN, "current incomplete palf has bee staled, delete it", K(timestamp), K(current_timestamp), K(path));
}
}
}
return ret;
}
int PalfEnvImpl::get_disk_usage(int64_t &used_size_byte, int64_t &total_usable_size_byte)
{
int ret = OB_SUCCESS;
constexpr int64_t MB = 1024 * 1024;
PalfDiskOptions disk_options = disk_options_wrapper_.get_disk_opts_for_recycling_blocks();
if (OB_FAIL(get_disk_usage_(used_size_byte))) {
PALF_LOG(WARN, "get_disk_usage_ failed", K(ret));
} else {
total_usable_size_byte = disk_options.log_disk_usage_limit_size_;
PALF_LOG(INFO, "get_disk_usage", K(ret), "capacity(MB):", total_usable_size_byte/MB, "used(MB):", used_size_byte/MB);
}
return ret;
}
int PalfEnvImpl::update_options(const PalfOptions &options)
{
int ret = OB_SUCCESS;
WLockGuard guard(palf_meta_lock_);
if (IS_NOT_INIT) {
ret = OB_NOT_INIT;
} else if (false == options.is_valid()) {
ret = OB_INVALID_ARGUMENT;
PALF_LOG(WARN, "invalid argument", K(options));
} else if (OB_FAIL(disk_options_wrapper_.update_disk_options(options.disk_options_))) {
PALF_LOG(WARN, "update_disk_options failed", K(ret), K(options));
} else if (OB_FAIL(log_rpc_.update_transport_compress_options(options.compress_options_))) {
PALF_LOG(WARN, "update_transport_compress_options failed", K(ret), K(options));
} else {
PALF_LOG(INFO, "update_palf_options success", K(options));
}
return ret;
}
int PalfEnvImpl::get_options(PalfOptions &options)
{
int ret = OB_SUCCESS;
if (IS_NOT_INIT) {
ret = OB_NOT_INIT;
} else {
options.disk_options_ = disk_options_wrapper_.get_disk_opts_for_recycling_blocks();
options.compress_options_ = log_rpc_.get_compress_opts();
}
return ret;
}
int PalfEnvImpl::for_each(const common::ObFunction<int (IPalfHandleImpl *)> &func)
{
auto func_impl = [&func](const LSKey &ls_key, IPalfHandleImpl *ipalf_handle_impl) -> bool {
bool bool_ret = true;
int ret = OB_SUCCESS;
if (OB_FAIL(func(ipalf_handle_impl))) {
PALF_LOG(WARN, "execute func failed", K(ret), K(ls_key));
} else {
}
if (OB_FAIL(ret)) {
bool_ret = false;
}
return bool_ret;
};
int ret = OB_SUCCESS;
if (OB_FAIL(palf_handle_impl_map_.for_each(func_impl))) {
PALF_LOG(WARN, "iterate palf_handle_impl_map_ failed", K(ret));
} else {
}
return ret;
}
int PalfEnvImpl::for_each(const common::ObFunction<int (const PalfHandle &)> &func)
{
auto func_impl = [&func](const LSKey &ls_key, IPalfHandleImpl *ipalf_handle_impl) -> bool {
bool bool_ret = true;
int ret = OB_SUCCESS;
PalfHandle palf_handle;
palf_handle.palf_handle_impl_ = ipalf_handle_impl;
if (OB_FAIL(func(palf_handle))) {
PALF_LOG(WARN, "execute func failed", K(ret), K(ls_key));
} else {
}
if (OB_FAIL(ret)) {
bool_ret = false;
}
return bool_ret;
};
int ret = OB_SUCCESS;
if (OB_FAIL(palf_handle_impl_map_.for_each(func_impl))) {
PALF_LOG(WARN, "iterate palf_handle_impl_map_ failed", K(ret));
} else {
}
return ret;
}
common::ObILogAllocator* PalfEnvImpl::get_log_allocator()
{
return log_alloc_mgr_;
}
PalfEnvImpl::ReloadPalfHandleImplFunctor::ReloadPalfHandleImplFunctor(PalfEnvImpl *palf_env_impl) : palf_env_impl_(palf_env_impl)
{
}
int PalfEnvImpl::ReloadPalfHandleImplFunctor::func(const struct dirent *entry)
{
int ret = OB_SUCCESS;
int pret = 0;
ObTimeGuard guard("ReloadFunctor");
struct stat st;
char log_dir[OB_MAX_FILE_NAME_LENGTH] = {'\0'};
if (OB_ISNULL(entry)) {
ret = OB_INVALID_ARGUMENT;
PALF_LOG(WARN, "invalid args", K(ret), KP(entry));
} else if (0 > (pret = snprintf(log_dir, MAX_PATH_SIZE, "%s/%s", palf_env_impl_->log_dir_, entry->d_name))) {
ret = OB_ERR_UNEXPECTED;
PALF_LOG(WARN, "snprint failed", K(ret), K(pret), K(entry->d_name));
} else if (0 != stat(log_dir, &st)) {
PALF_LOG(INFO, "this entry is not a block", K(ret), K(log_dir), K(errno));
} else if (false == S_ISDIR(st.st_mode)) {
PALF_LOG(WARN, "path is not a directory, ignore it", K(ret), K(log_dir), K(st.st_mode));
} else {
const char *path = entry->d_name;
bool is_number = true;
const size_t path_len = strlen(path);
for (size_t i = 0; is_number && i < path_len; ++i) {
if ('\0' == path[i]) {
break;
} else if (!isdigit(path[i])) {
is_number = false;
}
}
if (!is_number) {
// do nothing, skip invalid block like tmp
} else {
int64_t id = strtol(path, nullptr, 10);
if (OB_FAIL(palf_env_impl_->reload_palf_handle_impl_(id))) {
PALF_LOG(WARN, "reload_palf_handle_impl failed", K(ret));
}
guard.click("reload_palf_handle_impl");
PALF_LOG(INFO, "reload_palf_handle_impl_", K(ret), K(id), K(guard));
}
}
return ret;
}
int PalfEnvImpl::reload_palf_handle_impl_(const int64_t palf_id)
{
int ret = OB_SUCCESS;
int pret = 0;
PalfHandleImpl *tmp_palf_handle_impl;
char base_dir[OB_MAX_FILE_NAME_LENGTH] = {'\0'};
int64_t start_ts = ObTimeUtility::current_time();
LSKey hash_map_key(palf_id);
bool is_integrity = true;
const int64_t palf_epoch = ATOMIC_AAF(&last_palf_epoch_, 1);
if (0 > (pret = snprintf(base_dir, MAX_PATH_SIZE, "%s/%ld", log_dir_, palf_id))) {
ret = OB_ERR_UNEXPECTED;
PALF_LOG(WARN, "snprint failed", K(ret), K(pret), K(palf_id));
} else if (NULL == (tmp_palf_handle_impl = PalfHandleImplFactory::alloc())) {
ret = OB_ALLOCATE_MEMORY_FAILED;
PALF_LOG(WARN, "alloc ipalf_handle_impl failed", K(ret));
} else if (OB_FAIL(tmp_palf_handle_impl->load(palf_id, &fetch_log_engine_, base_dir, log_alloc_mgr_,
log_block_pool_, &log_rpc_, &log_io_worker_, this, self_, &election_timer_, palf_epoch, is_integrity))) {
PALF_LOG(ERROR, "PalfHandleImpl init failed", K(ret), K(palf_id));
} else if (OB_FAIL(palf_handle_impl_map_.insert_and_get(hash_map_key, tmp_palf_handle_impl))) {
PALF_LOG(WARN, "palf_handle_impl_map_ insert_and_get failed", K(ret), K(palf_id), K(tmp_palf_handle_impl));
} else {
(void) tmp_palf_handle_impl->set_scan_disk_log_finished();
palf_handle_impl_map_.revert(tmp_palf_handle_impl);
int64_t cost_ts = ObTimeUtility::current_time() - start_ts;
PALF_LOG(INFO, "reload_palf_handle_impl success", K(ret), K(palf_id), K(cost_ts), KP(this),
KP(&palf_handle_impl_map_));
}
if (OB_FAIL(ret) && NULL != tmp_palf_handle_impl) {
// if 'tmp_palf_handle_impl' has not been inserted into hash map,
// need reclaim manually.
PALF_LOG(ERROR, "reload_palf_handle_impl_ failed, need free tmp_palf_handle_impl", K(ret), K(tmp_palf_handle_impl));
if (OB_ENTRY_NOT_EXIST == palf_handle_impl_map_.contains_key(hash_map_key)) {
PalfHandleImplFactory::free(tmp_palf_handle_impl);
tmp_palf_handle_impl = NULL;
}
} else if (false == is_integrity) {
PALF_LOG(WARN, "palf instance is not integrity, remove it", K(palf_id));
ret = move_incomplete_palf_into_tmp_dir_(palf_id);
}
return ret;
}
int PalfEnvImpl::get_total_used_disk_space_(int64_t &total_used_disk_space,
int64_t &palf_id,
int64_t &maximum_used_size)
{
int ret = OB_SUCCESS;
GetTotalUsedDiskSpace functor;
if (OB_FAIL(palf_handle_impl_map_.for_each(functor))) {
ret = functor.ret_code_;
PALF_LOG(WARN, "get_total_used_disk_space", K(ret), K(functor));
} else {
palf_id = functor.palf_id_;
maximum_used_size = functor.maximum_used_size_;
total_used_disk_space = functor.total_used_disk_space_;
}
return ret;
}
int PalfEnvImpl::get_disk_usage_(int64_t &used_size_byte,
int64_t &palf_id,
int64_t &maximum_used_size)
{
int ret = OB_SUCCESS;
if (OB_FAIL(get_total_used_disk_space_(used_size_byte, palf_id, maximum_used_size))) {
PALF_LOG(WARN, "get_total_used_disk_space failed", K(ret), KPC(this));
} else {
}
return ret;
}
int PalfEnvImpl::get_disk_usage_(int64_t &used_size_byte)
{
int ret = OB_SUCCESS;
int64_t unused_palf_id = 0;
int64_t unused_size = 0;
if (OB_FAIL(get_disk_usage_(used_size_byte,
unused_palf_id, unused_size))) {
PALF_LOG(WARN, "get_total_used_disk_space failed", K(ret), KPC(this));
} else {
}
return ret;
}
int PalfEnvImpl::recycle_blocks_(bool &has_recycled, int64_t &oldest_palf_id, SCN &oldest_scn)
{
int ret = OB_SUCCESS;
has_recycled = false;
// TODO by runlin:
// 1. only execute unlink blocks when the disk usage watemark reaches the threshold.
// 2. batch unlink in each round.
LogGetRecycableFileCandidate functor;
if (OB_FAIL(palf_handle_impl_map_.for_each(functor))) {
PALF_LOG(WARN, "palf_handle_impl_map_ for_each failed", K(ret), K(functor));
} else {
IPalfHandleImplGuard guard;
int64_t palf_id(functor.id_);
const block_id_t min_block_id = functor.min_block_id_;
if (false == is_valid_block_id(min_block_id)) {
PALF_LOG(WARN, "there is not any block can be recycled, need verify the base"
"lsn of PalfHandleImpl whether has been advanced", K(ret), KPC(this));
} else if (OB_FAIL(get_palf_handle_impl(palf_id, guard))) {
PALF_LOG(WARN, "get_palf_handle_impl failed", K(ret), K(palf_id));
} else if (OB_FAIL(guard.get_palf_handle_impl()->delete_block(min_block_id))) {
PALF_LOG(WARN, "delete block failed", K(ret), K(min_block_id), K(functor));
} else {
has_recycled = true;
PALF_LOG(INFO, "recycle_blocks success", K(functor));
}
oldest_palf_id = functor.oldest_palf_id_;
oldest_scn = functor.oldest_block_scn_;
}
return ret;
}
int PalfEnvImpl::wait_until_reference_count_to_zero_(const int64_t palf_id)
{
int ret = OB_SUCCESS;
int pret = 0;
char base_dir[MAX_PATH_SIZE] = {'\0'};
if (false == is_valid_palf_id(palf_id)) {
ret = OB_INVALID_ARGUMENT;
PALF_LOG(ERROR, "invalid arguments", K(ret), K(palf_id));
} else if (0 > (pret = snprintf(base_dir, MAX_PATH_SIZE, "%s/%ld", log_dir_, palf_id))) {
ret = OB_ERR_UNEXPECTED;
PALF_LOG(ERROR, "snprinf failed", K(ret), K(pret), K(palf_id));
} else {
bool result = true;
while (OB_SUCC(FileDirectoryUtils::is_exists(base_dir, result))) {
if (false == result) {
break;
}
PALF_LOG(INFO, "wait_until_reference_count_to_zero_ failed, may be reference count has leaked", K(palf_id));
ob_usleep(1000);
}
}
return ret;
}
bool PalfEnvImpl::check_can_create_palf_handle_impl_() const
{
bool bool_ret = true;
int64_t count = palf_handle_impl_map_.count();
// NB: avoid concurrent with expand and shrink, need guard by palf_meta_lock_.
const PalfDiskOptions disk_opts = disk_options_wrapper_.get_disk_opts_for_recycling_blocks();
bool_ret = (count + 1) * MIN_DISK_SIZE_PER_PALF_INSTANCE <= disk_opts.log_disk_usage_limit_size_;
return bool_ret;
}
int PalfEnvImpl::remove_palf_handle_impl_from_map_not_guarded_by_lock_(const int64_t palf_id)
{
int ret = OB_SUCCESS;
LSKey hash_map_key(palf_id);
auto set_delete_func = [](const LSKey &key, IPalfHandleImpl *value) {
UNUSED(key);
value->set_deleted();
};
if (OB_FAIL(palf_handle_impl_map_.operate(hash_map_key, set_delete_func))) {
PALF_LOG(WARN, "operate palf_handle_impl_map_ failed", K(ret), K(palf_id), KPC(this));
} else if (OB_FAIL(palf_handle_impl_map_.del(hash_map_key))) {
PALF_LOG(WARN, "palf_handle_impl_map_ del failed", K(ret), K(palf_id));
} else {
PALF_LOG(INFO, "remove_palf_handle_impl success", K(ret), K(palf_id));
}
return ret;
}
int PalfEnvImpl::move_incomplete_palf_into_tmp_dir_(const int64_t palf_id)
{
int ret = OB_SUCCESS;
int pret = 0;
const mode_t mode = S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH;
char src_log_dir[OB_MAX_FILE_NAME_LENGTH] = {'\0'};
char dest_log_dir[OB_MAX_FILE_NAME_LENGTH] = {'\0'};
bool tmp_dir_exist = false;
LSKey hash_map_key(palf_id);
int64_t timestamp = ObTimeUtility::current_time();
if (OB_FAIL(palf_handle_impl_map_.del(hash_map_key))) {
PALF_LOG(WARN, "del palf from map failed, unexpected", K(ret),
K(palf_id), KPC(this));;
} else if (OB_FAIL(check_tmp_log_dir_exist_(tmp_dir_exist))) {
} else if (false == tmp_dir_exist && (-1 == ::mkdir(tmp_log_dir_, mode))) {
ret = convert_sys_errno();
PALF_LOG(ERROR, "mkdir tmp log dir failed", K(ret), KPC(this), K(tmp_log_dir_));
} else if (0 > (pret = snprintf(src_log_dir, MAX_PATH_SIZE, "%s/%ld", log_dir_, palf_id))) {
ret = OB_ERR_UNEXPECTED;
PALF_LOG(ERROR, "snprintf failed, unexpected error", K(ret));
} else if (0 > (pret = snprintf(dest_log_dir, MAX_PATH_SIZE, "%s/%ld_%ld", tmp_log_dir_, palf_id, timestamp))) {
ret = OB_ERR_UNEXPECTED;
PALF_LOG(ERROR, "snprintf failed, unexpected error", K(ret));
} else if (-1 == ::rename(src_log_dir, dest_log_dir)) {
ret = convert_sys_errno();
PALF_LOG(ERROR, "::rename failed", K(ret), KPC(this), K(src_log_dir), K(dest_log_dir));
} else if (OB_FAIL(FileDirectoryUtils::fsync_dir(log_dir_))) {
PALF_LOG(ERROR, "fsync_dir failed", K(ret), KPC(this), K(src_log_dir), K(dest_log_dir));
} else {
}
return ret;
}
int PalfEnvImpl::check_tmp_log_dir_exist_(bool &exist) const
{
int ret = OB_SUCCESS;
if (OB_FAIL(FileDirectoryUtils::is_exists(tmp_log_dir_, exist))) {
PALF_LOG(WARN, "check dir exist failed", K(ret), KPC(this), K(tmp_log_dir_));
} else {
}
return ret;
}
int PalfEnvImpl::remove_stale_incomplete_palf_()
{
int ret = OB_SUCCESS;
bool exist = false;
RemoveStaleIncompletePalfFunctor functor(this);
if (OB_FAIL(check_tmp_log_dir_exist_(exist))) {
PALF_LOG(WARN, "check_tmp_log_dir_exist_ failed", K(ret), KPC(this));
} else if (false == exist) {
} else if (OB_FAIL(scan_dir(tmp_log_dir_, functor))){
PALF_LOG(WARN, "remove_stale_incomplete_palf_ failed", K(ret), KPC(this), K(tmp_log_dir_));
} else {
}
return ret;
}
int PalfEnvImpl::get_io_start_time(int64_t &last_working_time)
{
int ret = OB_SUCCESS;
if (IS_NOT_INIT) {
ret = OB_NOT_INIT;
} else {
last_working_time = log_io_worker_.get_last_working_time();
}
return ret;
}
int64_t PalfEnvImpl::get_tenant_id()
{
return tenant_id_;
}
int PalfEnvImpl::update_replayable_point(const SCN &replayable_scn)
{
int ret = OB_SUCCESS;
if (IS_NOT_INIT) {
ret = OB_NOT_INIT;
} else if (OB_FAIL(fetch_log_engine_.update_replayable_point(replayable_scn))) {
PALF_LOG(WARN, "update_replayable_point failed", KPC(this), K(replayable_scn));
}
return ret;
}
} // end namespace palf
} // end namespace oceanbase
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