meta_srv/metasrv/
builder.rs

1// Copyright 2023 Greptime Team
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7//     http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15use std::path::Path;
16use std::sync::atomic::AtomicBool;
17use std::sync::{Arc, Mutex, RwLock};
18use std::time::Duration;
19
20use client::client_manager::NodeClients;
21use client::inserter::InsertOptions;
22use common_base::Plugins;
23use common_catalog::consts::{MIN_USER_FLOW_ID, MIN_USER_TABLE_ID};
24use common_event_recorder::{DEFAULT_COMPACTION_TIME_WINDOW, EventRecorderImpl, EventRecorderRef};
25use common_grpc::channel_manager::ChannelConfig;
26use common_meta::ddl::flow_meta::FlowMetadataAllocator;
27use common_meta::ddl::table_meta::{TableMetadataAllocator, TableMetadataAllocatorRef};
28use common_meta::ddl::{
29    DdlContext, NoopRegionFailureDetectorControl, RegionFailureDetectorControllerRef,
30};
31use common_meta::ddl_manager::{DdlManager, DdlManagerConfiguratorRef};
32use common_meta::distributed_time_constants::default_distributed_time_constants;
33use common_meta::key::TableMetadataManager;
34use common_meta::key::flow::FlowMetadataManager;
35use common_meta::key::flow::flow_state::FlowStateManager;
36use common_meta::key::runtime_switch::{RuntimeSwitchManager, RuntimeSwitchManagerRef};
37use common_meta::kv_backend::memory::MemoryKvBackend;
38use common_meta::kv_backend::{KvBackendRef, ResettableKvBackendRef};
39use common_meta::node_manager::NodeManagerRef;
40use common_meta::reconciliation::manager::ReconciliationManager;
41use common_meta::region_keeper::MemoryRegionKeeper;
42use common_meta::region_registry::LeaderRegionRegistry;
43use common_meta::sequence::SequenceBuilder;
44use common_meta::state_store::KvStateStore;
45use common_meta::stats::topic::TopicStatsRegistry;
46use common_meta::wal_provider::{build_kafka_client, build_wal_provider};
47use common_procedure::ProcedureManagerRef;
48use common_procedure::local::{LocalManager, ManagerConfig};
49use common_stat::ResourceStatImpl;
50use common_telemetry::{info, warn};
51use snafu::{ResultExt, ensure};
52use store_api::storage::MAX_REGION_SEQ;
53
54use crate::bootstrap::build_default_meta_peer_client;
55use crate::cache_invalidator::MetasrvCacheInvalidator;
56use crate::cluster::MetaPeerClientRef;
57use crate::error::{self, BuildWalProviderSnafu, OtherSnafu, Result};
58use crate::events::EventHandlerImpl;
59use crate::gc::GcScheduler;
60use crate::greptimedb_telemetry::get_greptimedb_telemetry_task;
61use crate::handler::failure_handler::RegionFailureHandler;
62use crate::handler::flow_state_handler::FlowStateHandler;
63use crate::handler::persist_stats_handler::PersistStatsHandler;
64use crate::handler::region_lease_handler::{CustomizedRegionLeaseRenewerRef, RegionLeaseHandler};
65use crate::handler::{HeartbeatHandlerGroupBuilder, HeartbeatMailbox, Pushers};
66use crate::metasrv::{
67    ElectionRef, FLOW_ID_SEQ, METASRV_DATA_DIR, Metasrv, MetasrvInfo, MetasrvOptions,
68    RegionStatAwareSelectorRef, SelectTarget, SelectorContext, SelectorRef, TABLE_ID_SEQ,
69};
70use crate::peer::MetasrvPeerAllocator;
71use crate::procedure::region_migration::DefaultContextFactory;
72use crate::procedure::region_migration::manager::RegionMigrationManager;
73use crate::procedure::repartition::DefaultRepartitionProcedureFactory;
74use crate::procedure::wal_prune::Context as WalPruneContext;
75use crate::procedure::wal_prune::manager::{WalPruneManager, WalPruneTicker};
76use crate::region::flush_trigger::RegionFlushTrigger;
77use crate::region::supervisor::{
78    DEFAULT_INITIALIZATION_RETRY_PERIOD, DEFAULT_TICK_INTERVAL, HeartbeatAcceptor,
79    RegionFailureDetectorControl, RegionSupervisor, RegionSupervisorSelector,
80    RegionSupervisorTicker,
81};
82use crate::selector::lease_based::LeaseBasedSelector;
83use crate::selector::round_robin::RoundRobinSelector;
84use crate::service::mailbox::MailboxRef;
85use crate::service::store::cached_kv::LeaderCachedKvBackend;
86use crate::state::State;
87use crate::utils::database::DatabaseOperator;
88use crate::utils::insert_forwarder::InsertForwarder;
89
90/// The time window for twcs compaction of the region stats table.
91const REGION_STATS_TABLE_TWCS_COMPACTION_TIME_WINDOW: Duration = Duration::from_days(1);
92
93// TODO(fys): try use derive_builder macro
94pub struct MetasrvBuilder {
95    options: Option<MetasrvOptions>,
96    kv_backend: Option<KvBackendRef>,
97    in_memory: Option<ResettableKvBackendRef>,
98    selector: Option<SelectorRef>,
99    handler_group_builder: Option<HeartbeatHandlerGroupBuilder>,
100    election: Option<ElectionRef>,
101    meta_peer_client: Option<MetaPeerClientRef>,
102    node_manager: Option<NodeManagerRef>,
103    plugins: Option<Plugins>,
104    table_metadata_allocator: Option<TableMetadataAllocatorRef>,
105}
106
107impl MetasrvBuilder {
108    pub fn new() -> Self {
109        Self {
110            kv_backend: None,
111            in_memory: None,
112            selector: None,
113            handler_group_builder: None,
114            meta_peer_client: None,
115            election: None,
116            options: None,
117            node_manager: None,
118            plugins: None,
119            table_metadata_allocator: None,
120        }
121    }
122
123    pub fn options(mut self, options: MetasrvOptions) -> Self {
124        self.options = Some(options);
125        self
126    }
127
128    pub fn kv_backend(mut self, kv_backend: KvBackendRef) -> Self {
129        self.kv_backend = Some(kv_backend);
130        self
131    }
132
133    pub fn in_memory(mut self, in_memory: ResettableKvBackendRef) -> Self {
134        self.in_memory = Some(in_memory);
135        self
136    }
137
138    pub fn selector(mut self, selector: SelectorRef) -> Self {
139        self.selector = Some(selector);
140        self
141    }
142
143    pub fn heartbeat_handler(
144        mut self,
145        handler_group_builder: HeartbeatHandlerGroupBuilder,
146    ) -> Self {
147        self.handler_group_builder = Some(handler_group_builder);
148        self
149    }
150
151    pub fn meta_peer_client(mut self, meta_peer_client: MetaPeerClientRef) -> Self {
152        self.meta_peer_client = Some(meta_peer_client);
153        self
154    }
155
156    pub fn election(mut self, election: Option<ElectionRef>) -> Self {
157        self.election = election;
158        self
159    }
160
161    pub fn node_manager(mut self, node_manager: NodeManagerRef) -> Self {
162        self.node_manager = Some(node_manager);
163        self
164    }
165
166    pub fn plugins(mut self, plugins: Plugins) -> Self {
167        self.plugins = Some(plugins);
168        self
169    }
170
171    pub fn table_metadata_allocator(
172        mut self,
173        table_metadata_allocator: TableMetadataAllocatorRef,
174    ) -> Self {
175        self.table_metadata_allocator = Some(table_metadata_allocator);
176        self
177    }
178
179    pub async fn build(self) -> Result<Metasrv> {
180        let MetasrvBuilder {
181            election,
182            meta_peer_client,
183            options,
184            kv_backend,
185            in_memory,
186            selector,
187            handler_group_builder,
188            node_manager,
189            plugins,
190            table_metadata_allocator,
191        } = self;
192
193        let options = options.unwrap_or_default();
194
195        let kv_backend = kv_backend.unwrap_or_else(|| Arc::new(MemoryKvBackend::new()));
196        let in_memory = in_memory.unwrap_or_else(|| Arc::new(MemoryKvBackend::new()));
197
198        let state = Arc::new(RwLock::new(match election {
199            None => State::leader(options.grpc.server_addr.clone(), true),
200            Some(_) => State::follower(options.grpc.server_addr.clone()),
201        }));
202
203        let leader_cached_kv_backend = Arc::new(LeaderCachedKvBackend::new(
204            state.clone(),
205            kv_backend.clone(),
206        ));
207
208        let meta_peer_client = meta_peer_client
209            .unwrap_or_else(|| build_default_meta_peer_client(&election, &in_memory));
210        let database_operator = Arc::new(DatabaseOperator::new(meta_peer_client.clone()));
211
212        let event_inserter = Box::new(InsertForwarder::new(
213            database_operator.clone(),
214            Some(InsertOptions {
215                ttl: options.event_recorder.ttl,
216                append_mode: true,
217                twcs_compaction_time_window: Some(DEFAULT_COMPACTION_TIME_WINDOW),
218            }),
219        ));
220        // Builds the event recorder to record important events and persist them as the system table.
221        let event_recorder = Arc::new(EventRecorderImpl::new(Box::new(EventHandlerImpl::new(
222            event_inserter,
223        ))));
224
225        let selector = selector.unwrap_or_else(|| Arc::new(LeaseBasedSelector));
226        let pushers = Pushers::default();
227        let mailbox = build_mailbox(&kv_backend, &pushers);
228        let runtime_switch_manager = Arc::new(RuntimeSwitchManager::new(kv_backend.clone()));
229        let procedure_manager = build_procedure_manager(
230            &options,
231            &kv_backend,
232            &runtime_switch_manager,
233            event_recorder,
234        );
235
236        let table_metadata_manager = Arc::new(TableMetadataManager::new(
237            leader_cached_kv_backend.clone() as _,
238        ));
239        let flow_metadata_manager = Arc::new(FlowMetadataManager::new(
240            leader_cached_kv_backend.clone() as _,
241        ));
242
243        let selector_ctx = SelectorContext {
244            peer_discovery: meta_peer_client.clone(),
245        };
246
247        let wal_provider = build_wal_provider(&options.wal, kv_backend.clone())
248            .await
249            .context(BuildWalProviderSnafu)?;
250        let wal_provider = Arc::new(wal_provider);
251        let is_remote_wal = wal_provider.is_remote_wal();
252        let table_metadata_allocator = table_metadata_allocator.unwrap_or_else(|| {
253            let sequence = Arc::new(
254                SequenceBuilder::new(TABLE_ID_SEQ, kv_backend.clone())
255                    .initial(MIN_USER_TABLE_ID as u64)
256                    .step(10)
257                    .build(),
258            );
259            let peer_allocator = Arc::new(
260                MetasrvPeerAllocator::new(selector_ctx.clone(), selector.clone())
261                    .with_max_items(MAX_REGION_SEQ),
262            );
263            Arc::new(TableMetadataAllocator::with_peer_allocator(
264                sequence,
265                wal_provider.clone(),
266                peer_allocator,
267            ))
268        });
269        let table_id_allocator = table_metadata_allocator.table_id_allocator();
270
271        let flow_selector =
272            Arc::new(RoundRobinSelector::new(SelectTarget::Flownode)) as SelectorRef;
273
274        let flow_metadata_allocator = {
275            // for now flownode just use round-robin selector
276            let flow_selector_ctx = selector_ctx.clone();
277            let peer_allocator = Arc::new(MetasrvPeerAllocator::new(
278                flow_selector_ctx,
279                flow_selector.clone(),
280            ));
281            let seq = Arc::new(
282                SequenceBuilder::new(FLOW_ID_SEQ, kv_backend.clone())
283                    .initial(MIN_USER_FLOW_ID as u64)
284                    .step(10)
285                    .build(),
286            );
287
288            Arc::new(FlowMetadataAllocator::with_peer_allocator(
289                seq,
290                peer_allocator,
291            ))
292        };
293        let flow_state_handler =
294            FlowStateHandler::new(FlowStateManager::new(in_memory.clone().as_kv_backend_ref()));
295
296        let memory_region_keeper = Arc::new(MemoryRegionKeeper::default());
297        let node_manager = node_manager.unwrap_or_else(|| {
298            let datanode_client_channel_config = ChannelConfig::new()
299                .timeout(Some(options.datanode.client.timeout))
300                .connect_timeout(options.datanode.client.connect_timeout)
301                .tcp_nodelay(options.datanode.client.tcp_nodelay);
302            Arc::new(NodeClients::new(datanode_client_channel_config))
303        });
304        let cache_invalidator = Arc::new(MetasrvCacheInvalidator::new(
305            mailbox.clone(),
306            MetasrvInfo {
307                server_addr: options.grpc.server_addr.clone(),
308            },
309        ));
310
311        if !is_remote_wal && options.enable_region_failover {
312            ensure!(
313                options.allow_region_failover_on_local_wal,
314                error::UnexpectedSnafu {
315                    violated: "Region failover is not supported in the local WAL implementation!
316                    If you want to enable region failover for local WAL, please set `allow_region_failover_on_local_wal` to true.",
317                }
318            );
319            if options.allow_region_failover_on_local_wal {
320                warn!(
321                    "Region failover is force enabled in the local WAL implementation! This may lead to data loss during failover!"
322                );
323            }
324        }
325
326        let (tx, rx) = RegionSupervisor::channel();
327        let (region_failure_detector_controller, region_supervisor_ticker): (
328            RegionFailureDetectorControllerRef,
329            Option<std::sync::Arc<RegionSupervisorTicker>>,
330        ) = if options.enable_region_failover {
331            (
332                Arc::new(RegionFailureDetectorControl::new(tx.clone())) as _,
333                Some(Arc::new(RegionSupervisorTicker::new(
334                    DEFAULT_TICK_INTERVAL,
335                    options.region_failure_detector_initialization_delay,
336                    DEFAULT_INITIALIZATION_RETRY_PERIOD,
337                    tx.clone(),
338                ))),
339            )
340        } else {
341            (Arc::new(NoopRegionFailureDetectorControl) as _, None as _)
342        };
343
344        // region migration manager
345        let region_migration_manager = Arc::new(RegionMigrationManager::new(
346            procedure_manager.clone(),
347            DefaultContextFactory::new(
348                in_memory.clone(),
349                table_metadata_manager.clone(),
350                memory_region_keeper.clone(),
351                region_failure_detector_controller.clone(),
352                mailbox.clone(),
353                options.grpc.server_addr.clone(),
354                cache_invalidator.clone(),
355            ),
356        ));
357        region_migration_manager.try_start()?;
358        let region_supervisor_selector = plugins
359            .as_ref()
360            .and_then(|plugins| plugins.get::<RegionStatAwareSelectorRef>());
361
362        let supervisor_selector = match region_supervisor_selector {
363            Some(selector) => {
364                info!("Using region stat aware selector");
365                RegionSupervisorSelector::RegionStatAwareSelector(selector)
366            }
367            None => RegionSupervisorSelector::NaiveSelector(selector.clone()),
368        };
369
370        let region_failover_handler = if options.enable_region_failover {
371            let region_supervisor = RegionSupervisor::new(
372                rx,
373                options.failure_detector,
374                selector_ctx.clone(),
375                supervisor_selector,
376                region_migration_manager.clone(),
377                runtime_switch_manager.clone(),
378                meta_peer_client.clone(),
379                leader_cached_kv_backend.clone(),
380            )
381            .with_state(state.clone());
382
383            Some(RegionFailureHandler::new(
384                region_supervisor,
385                HeartbeatAcceptor::new(tx),
386            ))
387        } else {
388            None
389        };
390
391        let leader_region_registry = Arc::new(LeaderRegionRegistry::default());
392        let topic_stats_registry = Arc::new(TopicStatsRegistry::default());
393
394        let ddl_context = DdlContext {
395            node_manager: node_manager.clone(),
396            cache_invalidator: cache_invalidator.clone(),
397            memory_region_keeper: memory_region_keeper.clone(),
398            leader_region_registry: leader_region_registry.clone(),
399            table_metadata_manager: table_metadata_manager.clone(),
400            table_metadata_allocator: table_metadata_allocator.clone(),
401            flow_metadata_manager: flow_metadata_manager.clone(),
402            flow_metadata_allocator: flow_metadata_allocator.clone(),
403            region_failure_detector_controller,
404        };
405        let procedure_manager_c = procedure_manager.clone();
406        let repartition_procedure_factory = Arc::new(DefaultRepartitionProcedureFactory::new(
407            mailbox.clone(),
408            options.grpc.server_addr.clone(),
409        ));
410        let ddl_manager = DdlManager::try_new(
411            ddl_context,
412            procedure_manager_c,
413            repartition_procedure_factory,
414            true,
415        )
416        .context(error::InitDdlManagerSnafu)?;
417
418        let ddl_manager = if let Some(configurator) = plugins
419            .as_ref()
420            .and_then(|p| p.get::<DdlManagerConfiguratorRef<DdlManagerConfigureContext>>())
421        {
422            let ctx = DdlManagerConfigureContext {
423                kv_backend: kv_backend.clone(),
424                meta_peer_client: meta_peer_client.clone(),
425            };
426            configurator
427                .configure(ddl_manager, ctx)
428                .await
429                .context(OtherSnafu)?
430        } else {
431            ddl_manager
432        };
433
434        let ddl_manager = Arc::new(ddl_manager);
435
436        let region_flush_ticker = if is_remote_wal {
437            let remote_wal_options = options.wal.remote_wal_options().unwrap();
438            let (region_flush_trigger, region_flush_ticker) = RegionFlushTrigger::new(
439                table_metadata_manager.clone(),
440                leader_region_registry.clone(),
441                topic_stats_registry.clone(),
442                mailbox.clone(),
443                options.grpc.server_addr.clone(),
444                remote_wal_options.flush_trigger_size,
445                remote_wal_options.checkpoint_trigger_size,
446            );
447            region_flush_trigger.try_start()?;
448
449            Some(Arc::new(region_flush_ticker))
450        } else {
451            None
452        };
453
454        // remote WAL prune ticker and manager
455        let wal_prune_ticker = if is_remote_wal && options.wal.enable_active_wal_pruning() {
456            let (tx, rx) = WalPruneManager::channel();
457            // Safety: Must be remote WAL.
458            let remote_wal_options = options.wal.remote_wal_options().unwrap();
459            let kafka_client = build_kafka_client(&remote_wal_options.connection)
460                .await
461                .context(error::BuildKafkaClientSnafu)?;
462            let wal_prune_context = WalPruneContext {
463                client: Arc::new(kafka_client),
464                table_metadata_manager: table_metadata_manager.clone(),
465                leader_region_registry: leader_region_registry.clone(),
466            };
467            let wal_prune_manager = WalPruneManager::new(
468                remote_wal_options.auto_prune_parallelism,
469                rx,
470                procedure_manager.clone(),
471                wal_prune_context,
472            );
473            // Start manager in background. Ticker will be started in the main thread to send ticks.
474            wal_prune_manager.try_start().await?;
475            let wal_prune_ticker = Arc::new(WalPruneTicker::new(
476                remote_wal_options.auto_prune_interval,
477                tx.clone(),
478            ));
479            Some(wal_prune_ticker)
480        } else {
481            None
482        };
483
484        let gc_ticker = if options.gc.enable {
485            let (gc_scheduler, gc_ticker) = GcScheduler::new_with_config(
486                table_metadata_manager.clone(),
487                procedure_manager.clone(),
488                meta_peer_client.clone(),
489                mailbox.clone(),
490                options.grpc.server_addr.clone(),
491                options.gc.clone(),
492            )?;
493            gc_scheduler.try_start()?;
494
495            Some(Arc::new(gc_ticker))
496        } else {
497            None
498        };
499
500        let customized_region_lease_renewer = plugins
501            .as_ref()
502            .and_then(|plugins| plugins.get::<CustomizedRegionLeaseRenewerRef>());
503
504        let persist_region_stats_handler = if !options.stats_persistence.ttl.is_zero() {
505            let inserter = Box::new(InsertForwarder::new(
506                database_operator.clone(),
507                Some(InsertOptions {
508                    ttl: options.stats_persistence.ttl,
509                    append_mode: true,
510                    twcs_compaction_time_window: Some(
511                        REGION_STATS_TABLE_TWCS_COMPACTION_TIME_WINDOW,
512                    ),
513                }),
514            ));
515
516            Some(PersistStatsHandler::new(
517                inserter,
518                options.stats_persistence.interval,
519            ))
520        } else {
521            None
522        };
523
524        let handler_group_builder = match handler_group_builder {
525            Some(handler_group_builder) => handler_group_builder,
526            None => {
527                let region_lease_handler = RegionLeaseHandler::new(
528                    default_distributed_time_constants().region_lease.as_secs(),
529                    table_metadata_manager.clone(),
530                    memory_region_keeper.clone(),
531                    customized_region_lease_renewer,
532                );
533
534                HeartbeatHandlerGroupBuilder::new(pushers)
535                    .with_plugins(plugins.clone())
536                    .with_region_failure_handler(region_failover_handler)
537                    .with_region_lease_handler(Some(region_lease_handler))
538                    .with_flush_stats_factor(Some(options.flush_stats_factor))
539                    .with_flow_state_handler(Some(flow_state_handler))
540                    .with_persist_stats_handler(persist_region_stats_handler)
541                    .add_default_handlers()
542            }
543        };
544
545        let enable_telemetry = options.enable_telemetry;
546        let metasrv_home = Path::new(&options.data_home)
547            .join(METASRV_DATA_DIR)
548            .to_string_lossy()
549            .to_string();
550
551        let reconciliation_manager = Arc::new(ReconciliationManager::new(
552            node_manager.clone(),
553            table_metadata_manager.clone(),
554            cache_invalidator.clone(),
555            procedure_manager.clone(),
556        ));
557        reconciliation_manager
558            .try_start()
559            .context(error::InitReconciliationManagerSnafu)?;
560
561        let mut resource_stat = ResourceStatImpl::default();
562        resource_stat.start_collect_cpu_usage();
563
564        Ok(Metasrv {
565            state,
566            started: Arc::new(AtomicBool::new(false)),
567            start_time_ms: common_time::util::current_time_millis() as u64,
568            options,
569            in_memory,
570            kv_backend,
571            leader_cached_kv_backend,
572            meta_peer_client: meta_peer_client.clone(),
573            selector,
574            selector_ctx,
575            // TODO(jeremy): We do not allow configuring the flow selector.
576            flow_selector,
577            handler_group: RwLock::new(None),
578            handler_group_builder: Mutex::new(Some(handler_group_builder)),
579            election,
580            procedure_manager,
581            mailbox,
582            ddl_manager,
583            wal_provider,
584            table_metadata_manager,
585            runtime_switch_manager,
586            greptimedb_telemetry_task: get_greptimedb_telemetry_task(
587                Some(metasrv_home),
588                meta_peer_client,
589                enable_telemetry,
590            )
591            .await,
592            plugins: plugins.unwrap_or_else(Plugins::default),
593            memory_region_keeper,
594            region_migration_manager,
595            region_supervisor_ticker,
596            cache_invalidator,
597            leader_region_registry,
598            wal_prune_ticker,
599            region_flush_ticker,
600            table_id_allocator,
601            reconciliation_manager,
602            topic_stats_registry,
603            resource_stat: Arc::new(resource_stat),
604            gc_ticker,
605            database_operator,
606        })
607    }
608}
609
610fn build_mailbox(kv_backend: &KvBackendRef, pushers: &Pushers) -> MailboxRef {
611    let mailbox_sequence = SequenceBuilder::new("heartbeat_mailbox", kv_backend.clone())
612        .initial(1)
613        .step(100)
614        .build();
615
616    HeartbeatMailbox::create(pushers.clone(), mailbox_sequence)
617}
618
619fn build_procedure_manager(
620    options: &MetasrvOptions,
621    kv_backend: &KvBackendRef,
622    runtime_switch_manager: &RuntimeSwitchManagerRef,
623    event_recorder: EventRecorderRef,
624) -> ProcedureManagerRef {
625    let manager_config = ManagerConfig {
626        max_retry_times: options.procedure.max_retry_times,
627        retry_delay: options.procedure.retry_delay,
628        max_running_procedures: options.procedure.max_running_procedures,
629        ..Default::default()
630    };
631    let kv_state_store = Arc::new(
632        KvStateStore::new(kv_backend.clone()).with_max_value_size(
633            options
634                .procedure
635                .max_metadata_value_size
636                .map(|v| v.as_bytes() as usize),
637        ),
638    );
639
640    Arc::new(LocalManager::new(
641        manager_config,
642        kv_state_store.clone(),
643        kv_state_store,
644        Some(runtime_switch_manager.clone()),
645        Some(event_recorder),
646    ))
647}
648
649impl Default for MetasrvBuilder {
650    fn default() -> Self {
651        Self::new()
652    }
653}
654
655/// The context for [`DdlManagerConfiguratorRef`].
656pub struct DdlManagerConfigureContext {
657    pub kv_backend: KvBackendRef,
658    pub meta_peer_client: MetaPeerClientRef,
659}
meta_srv/metasrv/builder.rs

meta_srv/metasrv/
builder.rs
