IndexerService::apply_init_tip should stop after received exit signal.

[eval-exec]

What problem does this PR solve?

Issue Number: close #4311

Problem Summary:

In the apply_init_tip function, there is a loop that should take into account the exit signal:

ckb/util/indexer/src/service.rs

Lines 156 to 172 in 1ee9c98

	loop {
	if let Err(e) = self.secondary_db.try_catch_up_with_primary() {
	error!("secondary_db try_catch_up_with_primary error {}", e);
	}
	if let Some(header) = self.secondary_db.get_block_header(&init_tip_hash.pack()) {
	let init_tip_number = header.number();
	let mut batch = self.store.batch().expect("create batch should be OK");
	batch
	.put_kv(
	Key::Header(init_tip_number, &init_tip_hash.pack(), true),
	vec![],
	)
	.expect("insert init tip header should be OK");
	batch.commit().expect("commit batch should be OK");
	break;
	}
	sleep(Duration::from_secs(1));

Additionally, once initial_syncing is finished and CKB receives an exit signal, there is no need to spawn the new_block_watcher polling job.

What's Changed:

Related changes

• handle exit signal in apply_init_tip

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No code ci-runs-only: [ quick_checks,linters ]

Side effects

• None

Release note

Title Only: Include only the PR title in the release note.

[15168316096]

Review verification passed, ctrl c can exit the ckb process normally, the relevant log content is as follows:

^C2024-02-08 12:20:58.267 +00:00 ctrl-c INFO ckb_bin::subcommand::run  Trapped exit signal, exiting...
2024-02-08 12:20:58.267 +00:00 ctrl-c DEBUG ckb_stop_handler::stop_register  Received exit signal; broadcasting exit signal to all threads
2024-02-08 12:20:58.267 +00:00 GlobalRt-6 INFO ckb_tx_pool::chunk_process  TxPool chunk_command service received exit signal, exit now
2024-02-08 12:20:58.267 +00:00 GlobalRt-5 INFO ckb_sync::types::header_map  HeaderMap limit_memory received exit signal, exit now
2024-02-08 12:20:58.267 +00:00 main DEBUG ckb_stop_handler::stop_register  wait_all_ckb_services_exit waiting all threads to exit
2024-02-08 12:20:58.267 +00:00 GlobalRt-5 INFO ckb_tx_pool::service  TxPool reorg process service received exit signal, exit now
2024-02-08 12:20:58.267 +00:00 GlobalRt-8 INFO ckb_tx_pool::service  TxPool block_assembler process service received exit signal, exit now
2024-02-08 12:20:58.267 +00:00 GlobalRt-5 DEBUG hyper::server::shutdown  signal received, starting graceful shutdown
2024-02-08 12:20:58.268 +00:00 GlobalRt-8 INFO ckb_block_filter::filter  BlockFilter received exit signal, exit now
2024-02-08 12:20:58.268 +00:00 GlobalRt-6 INFO ckb_notify  NotifyService received exit signal, exit now
2024-02-08 12:20:58.267 +00:00 ChainService INFO ckb_chain::chain  ChainService received exit signal, exit now
2024-02-08 12:20:58.268 +00:00 GlobalRt-11 INFO ckb_tx_pool::service  TxPool is saving, please wait...
2024-02-08 12:20:58.268 +00:00 GlobalRt-1 INFO ckb_network::network  NetworkService receive exit signal, start shutdown...
2024-02-08 12:20:58.268 +00:00 GlobalRt-1 INFO ckb_network::network  NetworkService shutdown now
2024-02-08 12:20:58.268 +00:00 GlobalRt-1 DEBUG tentacle::service  shutdown because all state is empty head
2024-02-08 12:20:58.268 +00:00 GlobalRt-1 DEBUG tentacle::service::future_task  future task finished because service shutdown
2024-02-08 12:20:58.268 +00:00 GlobalRt-5 INFO ckb_network::network  p2p service event: ListenClose { address: "/ip4/0.0.0.0/tcp/8127" }
2024-02-08 12:20:58.268 +00:00 GlobalRt-0 DEBUG ckb_network::services::dump_peer_store  Dump peer store before exiting
2024-02-08 12:20:58.268 +00:00 GlobalRt-0 DEBUG ckb_network::peer_store::peer_store_db  Dump 0 addrs
2024-02-08 12:20:58.268 +00:00 GlobalRt-1 DEBUG sled::pagecache::logger  IoBufs dropped
2024-02-08 12:20:58.268 +00:00 main INFO ckb_stop_handler::stop_register  Waiting thread ChainService done.
2024-02-08 12:20:58.268 +00:00 main DEBUG ckb_stop_handler::stop_register  All ckb threads have been stopped.
2024-02-08 12:20:58.268 +00:00 main INFO ckb_bin  Waiting for all tokio tasks to exit...
2024-02-08 12:20:58.271 +00:00 GlobalRt-11 INFO ckb_tx_pool::process  TxPool saved successfully
2024-02-08 12:20:58.271 +00:00 GlobalRt-11 INFO ckb_tx_pool::service  TxPool process_service exit now
2024-02-08 12:20:58.272 +00:00 GlobalRt-0 DEBUG ckb_network::peer_store::peer_store_db  Dump 0 banned addrs
2024-02-08 12:20:58.274 +00:00 GlobalRt-0 DEBUG ckb_network::services::dump_peer_store  Dump peer store to "/home/ckb/xueyl/ckb/ckb_v0.114.0-rc1_x86_64-unknown-linux-gnu/data/network/peer_store"
2024-02-08 12:20:58.816 +00:00 GlobalRt-16 INFO ckb_indexer::service  apply_init_tip received exit signal, exit now
2024-02-08 12:20:59.165 +00:00 GlobalRt-11 INFO ckb_indexer::service  initial_syncing finished
2024-02-08 12:20:59.165 +00:00 GlobalRt-11 INFO ckb_indexer::service  Indexer received exit signal, cancel new_block_watcher task, exit now
2024-02-08 12:20:59.166 +00:00 main INFO ckb_bin  All tokio tasks and threads have exited. CKB shutdown```