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server.rs
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server.rs
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//! Conveniences for creating a TiKV server
use super::setup::*;
use super::signal_handler;
use engine::rocks;
use engine::rocks::util::metrics_flusher::{MetricsFlusher, DEFAULT_FLUSHER_INTERVAL};
use engine::rocks::util::security::encrypted_env_from_cipher_file;
use engine::Engines;
use fs2::FileExt;
use kvproto::backup::create_backup;
use kvproto::deadlock::create_deadlock;
use kvproto::debugpb::create_debug;
use kvproto::import_sstpb::create_import_sst;
use pd_client::{PdClient, RpcClient};
use std::fs::File;
use std::path::Path;
use std::sync::{Arc, Mutex};
use std::thread::JoinHandle;
use std::time::Duration;
use tikv::config::TiKvConfig;
use tikv::coprocessor;
use tikv::import::{ImportSSTService, SSTImporter};
use tikv::raftstore::coprocessor::{CoprocessorHost, RegionInfoAccessor};
use tikv::raftstore::store::fsm::store::{StoreMeta, PENDING_VOTES_CAP};
use tikv::raftstore::store::{fsm, LocalReader};
use tikv::raftstore::store::{new_compaction_listener, SnapManagerBuilder};
use tikv::server::lock_manager::LockManager;
use tikv::server::resolve;
use tikv::server::service::DebugService;
use tikv::server::status_server::StatusServer;
use tikv::server::transport::ServerRaftStoreRouter;
use tikv::server::DEFAULT_CLUSTER_ID;
use tikv::server::{create_raft_storage, Node, RaftKv, Server};
use tikv::storage::{self, AutoGCConfig, DEFAULT_ROCKSDB_SUB_DIR};
use tikv_util::check_environment_variables;
use tikv_util::security::SecurityManager;
use tikv_util::time::Monitor;
use tikv_util::worker::FutureWorker;
const RESERVED_OPEN_FDS: u64 = 1000;
pub fn run_tikv(mut config: TiKvConfig) {
// Sets the global logger ASAP.
// It is okay to use the config w/o `validate()`,
// because `initial_logger()` handles various conditions.
initial_logger(&config);
tikv_util::set_panic_hook(false, &config.storage.data_dir);
// Print version information.
tikv::log_tikv_info();
info!(
"using config";
"config" => serde_json::to_string(&config).unwrap(),
);
config.write_into_metrics();
// Do some prepare works before start.
pre_start(&config);
let security_mgr = Arc::new(
SecurityManager::new(&config.security)
.unwrap_or_else(|e| fatal!("failed to create security manager: {}", e.description())),
);
let pd_client = RpcClient::new(&config.pd, Arc::clone(&security_mgr))
.unwrap_or_else(|e| fatal!("failed to create rpc client: {}", e));
let cluster_id = pd_client
.get_cluster_id()
.unwrap_or_else(|e| fatal!("failed to get cluster id: {}", e));
if cluster_id == DEFAULT_CLUSTER_ID {
fatal!("cluster id can't be {}", DEFAULT_CLUSTER_ID);
}
config.server.cluster_id = cluster_id;
info!(
"connect to PD cluster";
"cluster_id" => cluster_id
);
let _m = Monitor::default();
run_raft_server(pd_client, &config, security_mgr);
}
fn run_raft_server(pd_client: RpcClient, cfg: &TiKvConfig, security_mgr: Arc<SecurityManager>) {
let store_path = Path::new(&cfg.storage.data_dir);
let lock_path = store_path.join(Path::new("LOCK"));
let db_path = store_path.join(Path::new(DEFAULT_ROCKSDB_SUB_DIR));
let snap_path = store_path.join(Path::new("snap"));
let raft_db_path = Path::new(&cfg.raft_store.raftdb_path);
let import_path = store_path.join("import");
let f = File::create(lock_path.as_path())
.unwrap_or_else(|e| fatal!("failed to create lock at {}: {}", lock_path.display(), e));
if f.try_lock_exclusive().is_err() {
fatal!(
"lock {} failed, maybe another instance is using this directory.",
store_path.display()
);
}
if tikv_util::panic_mark_file_exists(&cfg.storage.data_dir) {
fatal!(
"panic_mark_file {} exists, there must be something wrong with the db.",
tikv_util::panic_mark_file_path(&cfg.storage.data_dir).display()
);
}
// Initialize raftstore channels.
let (router, system) = fsm::create_raft_batch_system(&cfg.raft_store);
let compaction_listener = new_compaction_listener(router.clone());
// Create pd client and pd worker
let pd_client = Arc::new(pd_client);
let pd_worker = FutureWorker::new("pd-worker");
let (mut worker, resolver) = resolve::new_resolver(Arc::clone(&pd_client))
.unwrap_or_else(|e| fatal!("failed to start address resolver: {}", e));
let pd_sender = pd_worker.scheduler();
// Create encrypted env from cipher file
let encrypted_env = if !cfg.security.cipher_file.is_empty() {
match encrypted_env_from_cipher_file(&cfg.security.cipher_file, None) {
Err(e) => fatal!(
"failed to create encrypted env from cipher file, err {:?}",
e
),
Ok(env) => Some(env),
}
} else {
None
};
// Create block cache.
let cache = cfg.storage.block_cache.build_shared_cache();
// Create raft engine.
let mut raft_db_opts = cfg.raftdb.build_opt();
if let Some(ref ec) = encrypted_env {
raft_db_opts.set_env(ec.clone());
}
let raft_db_cf_opts = cfg.raftdb.build_cf_opts(&cache);
let raft_engine = rocks::util::new_engine_opt(
raft_db_path.to_str().unwrap(),
raft_db_opts,
raft_db_cf_opts,
)
.unwrap_or_else(|s| fatal!("failed to create raft engine: {}", s));
// Create kv engine, storage.
let mut kv_db_opts = cfg.rocksdb.build_opt();
kv_db_opts.add_event_listener(compaction_listener);
if let Some(ec) = encrypted_env {
kv_db_opts.set_env(ec);
}
// Before create kv engine we need to check whether it needs to upgrade from v2.x to v3.x.
// if let Err(e) = tikv::raftstore::store::maybe_upgrade_from_2_to_3(
// &raft_engine,
// db_path.to_str().unwrap(),
// kv_db_opts.clone(),
// &cfg.rocksdb,
// &cache,
// ) {
// fatal!("failed to upgrade from v2.x to v3.x: {:?}", e);
// };
// Create kv engine, storage.
let kv_cfs_opts = cfg.rocksdb.build_cf_opts(&cache);
let kv_engine = rocks::util::new_engine_opt(db_path.to_str().unwrap(), kv_db_opts, kv_cfs_opts)
.unwrap_or_else(|s| fatal!("failed to create kv engine: {}", s));
let engines = Engines::new(Arc::new(kv_engine), Arc::new(raft_engine), cache.is_some());
let store_meta = Arc::new(Mutex::new(StoreMeta::new(PENDING_VOTES_CAP)));
let local_reader = LocalReader::new(engines.kv.clone(), store_meta.clone(), router.clone());
let raft_router = ServerRaftStoreRouter::new(router.clone(), local_reader);
let engine = RaftKv::new(raft_router.clone());
let storage_read_pool = storage::readpool_impl::build_read_pool(
&cfg.readpool.storage,
pd_sender.clone(),
engine.clone(),
);
let mut lock_mgr = if cfg.pessimistic_txn.enabled {
Some(LockManager::new())
} else {
None
};
let storage = create_raft_storage(
engine.clone(),
&cfg.storage,
storage_read_pool,
Some(engines.kv.clone()),
Some(raft_router.clone()),
lock_mgr.clone(),
)
.unwrap_or_else(|e| fatal!("failed to create raft storage: {}", e));
// Create snapshot manager, server.
let snap_mgr = SnapManagerBuilder::default()
.max_write_bytes_per_sec(cfg.server.snap_max_write_bytes_per_sec.0)
.max_total_size(cfg.server.snap_max_total_size.0)
.build(
snap_path.as_path().to_str().unwrap().to_owned(),
Some(router.clone()),
);
let server_cfg = Arc::new(cfg.server.clone());
// Create coprocessor endpoint.
let cop_read_pool = coprocessor::readpool_impl::build_read_pool(
&cfg.readpool.coprocessor,
pd_sender.clone(),
engine.clone(),
);
let cop = coprocessor::Endpoint::new(&server_cfg, cop_read_pool);
let importer = Arc::new(SSTImporter::new(import_path).unwrap());
let import_service = ImportSSTService::new(
cfg.import.clone(),
raft_router.clone(),
engines.kv.clone(),
Arc::clone(&importer),
);
// Create Debug service.
let debug_service = DebugService::new(engines.clone(), raft_router.clone());
// Create Backup service.
let mut backup_worker = tikv_util::worker::Worker::new("backup-endpoint");
let backup_scheduler = backup_worker.scheduler();
let backup_service = backup::Service::new(backup_scheduler);
// Create server
let mut server = Server::new(
&server_cfg,
&security_mgr,
storage.clone(),
cop,
raft_router,
resolver.clone(),
snap_mgr.clone(),
)
.unwrap_or_else(|e| fatal!("failed to create server: {}", e));
// Register services.
if server
.register_service(create_import_sst(import_service))
.is_some()
{
fatal!("failed to register import service");
}
if server
.register_service(create_debug(debug_service))
.is_some()
{
fatal!("failed to register debug service");
}
if let Some(lm) = lock_mgr.as_ref() {
if server
.register_service(create_deadlock(lm.deadlock_service()))
.is_some()
{
fatal!("failed to register deadlock service");
}
}
if server
.register_service(create_backup(backup_service))
.is_some()
{
fatal!("failed to register backup service");
}
let trans = server.transport();
// Create node.
let mut node = Node::new(system, &server_cfg, &cfg.raft_store, pd_client.clone());
// Create CoprocessorHost.
let mut coprocessor_host = CoprocessorHost::new(cfg.coprocessor.clone(), router);
// Create region collection.
let region_info_accessor = RegionInfoAccessor::new(&mut coprocessor_host);
region_info_accessor.start();
// Register the role change observer of the lock manager.
if let Some(lm) = lock_mgr.as_ref() {
lm.register_detector_role_change_observer(&mut coprocessor_host);
}
node.start(
engines.clone(),
trans,
snap_mgr,
pd_worker,
store_meta,
coprocessor_host,
importer,
)
.unwrap_or_else(|e| fatal!("failed to start node: {}", e));
initial_metric(&cfg.metric, Some(node.id()));
// Start backup endpoint.
let backup_endpoint = backup::Endpoint::new(
node.id(),
engine.clone(),
region_info_accessor.clone(),
engines.kv.clone(),
);
backup_worker
.start(backup_endpoint)
.unwrap_or_else(|e| fatal!("failed to start backup endpoint: {}", e));
// Start auto gc
let auto_gc_cfg = AutoGCConfig::new(
Arc::clone(&pd_client),
region_info_accessor.clone(),
node.id(),
);
if let Err(e) = storage.start_auto_gc(auto_gc_cfg) {
fatal!("failed to start auto_gc on storage, error: {}", e);
}
let mut metrics_flusher = MetricsFlusher::new(
engines.clone(),
Duration::from_millis(DEFAULT_FLUSHER_INTERVAL),
);
// Start metrics flusher
if let Err(e) = metrics_flusher.start() {
error!(
"failed to start metrics flusher";
"err" => %e
);
}
if let Some(lock_mgr) = lock_mgr.as_mut() {
lock_mgr
.start(
node.id(),
pd_client,
resolver,
Arc::clone(&security_mgr),
&cfg.pessimistic_txn,
)
.unwrap_or_else(|e| fatal!("failed to start lock manager: {}", e));
}
// Run server.
server
.build_and_bind()
.unwrap_or_else(|e| fatal!("failed to build server: {}", e));
server
.start(server_cfg, security_mgr)
.unwrap_or_else(|e| fatal!("failed to start server: {}", e));
let server_cfg = cfg.server.clone();
let mut status_enabled = cfg.metric.address.is_empty() && !server_cfg.status_addr.is_empty();
// Create a status server.
// TODO: How to keep cfg updated?
let mut status_server = StatusServer::new(server_cfg.status_thread_pool_size, cfg.clone());
if status_enabled {
// Start the status server.
if let Err(e) = status_server.start(server_cfg.status_addr) {
error!(
"failed to bind addr for status service";
"err" => %e
);
status_enabled = false;
}
}
signal_handler::handle_signal(Some(engines));
// Stop backup worker.
if let Some(j) = backup_worker.stop() {
j.join()
.unwrap_or_else(|e| fatal!("failed to stop backup: {:?}", e))
}
// Stop server.
server
.stop()
.unwrap_or_else(|e| fatal!("failed to stop server: {}", e));
if status_enabled {
// Stop the status server.
status_server.stop()
}
metrics_flusher.stop();
node.stop();
region_info_accessor.stop();
if let Some(lm) = lock_mgr.as_mut() {
lm.stop();
}
if let Some(Err(e)) = worker.stop().map(JoinHandle::join) {
info!(
"ignore failure when stopping resolver";
"err" => ?e
);
}
}
/// Various sanity-checks and logging before running a server.
///
/// Warnings are logged and fatal errors exit.
///
/// # Logs
///
/// The presence of these environment variables that affect the database
/// behavior is logged.
///
/// - `GRPC_POLL_STRATEGY`
/// - `http_proxy` and `https_proxy`
///
/// # Warnings
///
/// - if `net.core.somaxconn` < 32768
/// - if `net.ipv4.tcp_syncookies` is not 0
/// - if `vm.swappiness` is not 0
/// - if data directories are not on SSDs
/// - if the "TZ" environment variable is not set on unix
///
/// # Fatal errors
///
/// If the max open file descriptor limit is not high enough to support
/// the main database and the raft database.
fn pre_start(cfg: &TiKvConfig) {
// Before any startup, check system configuration and environment variables.
check_system_config(&cfg);
check_environment_variables();
if cfg.panic_when_unexpected_key_or_data {
info!("panic-when-unexpected-key-or-data is on");
tikv_util::set_panic_when_unexpected_key_or_data(true);
}
}
fn check_system_config(config: &TiKvConfig) {
info!("beginning system configuration check");
let mut rocksdb_max_open_files = config.rocksdb.max_open_files;
if config.rocksdb.titan.enabled {
// Titan engine maintains yet another pool of blob files and uses the same max
// number of open files setup as rocksdb does. So we double the max required
// open files here
rocksdb_max_open_files *= 2;
}
if let Err(e) = tikv_util::config::check_max_open_fds(
RESERVED_OPEN_FDS + (rocksdb_max_open_files + config.raftdb.max_open_files) as u64,
) {
fatal!("{}", e);
}
for e in tikv_util::config::check_kernel() {
warn!(
"check: kernel";
"err" => %e
);
}
// Check RocksDB data dir
if let Err(e) = tikv_util::config::check_data_dir(&config.storage.data_dir) {
warn!(
"check: rocksdb-data-dir";
"path" => &config.storage.data_dir,
"err" => %e
);
}
// Check raft data dir
if let Err(e) = tikv_util::config::check_data_dir(&config.raft_store.raftdb_path) {
warn!(
"check: raftdb-path";
"path" => &config.raft_store.raftdb_path,
"err" => %e
);
}
}