feat: Follow-up for DAL split (matter-labs#1464)

## What ❔

Rename types
* Server -> Core
* StorageProcessor -> Connection
* StorageProcessorTags -> ConnectionTags
* PooledStorageProcessor -> PooledConnection
* StorageProcessorInner -> ConnectionInner
* StorageMarker -> DbMarker
* ServerDals -> CoreDal
* ProverDals -> ProverDal
* access_storage -> connection

## Why ❔

For better intuitive understanding of what is going on in code.

## Checklist

<!-- Check your PR fulfills the following items. -->
<!-- For draft PRs check the boxes as you complete them. -->

- [x] PR title corresponds to the body of PR (we generate changelog
entries from PRs).
- [x] Tests for the changes have been added / updated.
- [x] Documentation comments have been added / updated.
- [x] Code has been formatted via `zk fmt` and `zk lint`.
- [x] Spellcheck has been run via `zk spellcheck`.
- [x] Linkcheck has been run via `zk linkcheck`.

core/bin/block_reverter/src/main.rs

@@ -8,7 +8,7 @@ use zksync_config::{
 use zksync_core::block_reverter::{
     BlockReverter, BlockReverterEthConfig, BlockReverterFlags, L1ExecutedBatchesRevert, NodeRole,
 };
-use zksync_dal::{ConnectionPool, Server};
+use zksync_dal::{ConnectionPool, Core};
 use zksync_env_config::FromEnv;
 use zksync_types::{L1BatchNumber, U256};
 
@@ -96,7 +96,7 @@ async fn main() -> anyhow::Result<()> {
     let postgres_config = PostgresConfig::from_env().context("PostgresConfig::from_env()")?;
     let config = BlockReverterEthConfig::new(eth_sender, contracts, eth_client.web3_url.clone());
 
-    let connection_pool = ConnectionPool::<Server>::builder(
+    let connection_pool = ConnectionPool::<Core>::builder(
         postgres_config.master_url()?,
         postgres_config.max_connections()?,
     )

core/bin/contract-verifier/src/main.rs

@@ -8,7 +8,7 @@ use zksync_config::{
     configs::{ObservabilityConfig, PrometheusConfig},
     ApiConfig, ContractVerifierConfig, PostgresConfig,
 };
-use zksync_dal::{ConnectionPool, Server, ServerDals};
+use zksync_dal::{ConnectionPool, Core, CoreDal};
 use zksync_env_config::FromEnv;
 use zksync_queued_job_processor::JobProcessor;
 use zksync_utils::wait_for_tasks::wait_for_tasks;
@@ -20,8 +20,8 @@ pub mod verifier;
 pub mod zksolc_utils;
 pub mod zkvyper_utils;
 
-async fn update_compiler_versions(connection_pool: &ConnectionPool<Server>) {
-    let mut storage = connection_pool.access_storage().await.unwrap();
+async fn update_compiler_versions(connection_pool: &ConnectionPool<Core>) {
+    let mut storage = connection_pool.connection().await.unwrap();
     let mut transaction = storage.start_transaction().await.unwrap();
 
     let zksync_home = std::env::var("ZKSYNC_HOME").unwrap_or_else(|_| ".".into());
@@ -134,7 +134,7 @@ async fn main() -> anyhow::Result<()> {
         ..ApiConfig::from_env().context("ApiConfig")?.prometheus
     };
     let postgres_config = PostgresConfig::from_env().context("PostgresConfig")?;
-    let pool = ConnectionPool::<Server>::singleton(
+    let pool = ConnectionPool::<Core>::singleton(
         postgres_config
             .master_url()
             .context("Master DB URL is absent")?,

core/bin/contract-verifier/src/verifier.rs

@@ -12,7 +12,7 @@ use lazy_static::lazy_static;
 use regex::Regex;
 use tokio::time;
 use zksync_config::ContractVerifierConfig;
-use zksync_dal::{ConnectionPool, Server, ServerDals, StorageProcessor};
+use zksync_dal::{Connection, ConnectionPool, Core, CoreDal};
 use zksync_env_config::FromEnv;
 use zksync_queued_job_processor::{async_trait, JobProcessor};
 use zksync_types::{
@@ -42,19 +42,19 @@ enum ConstructorArgs {
 #[derive(Debug)]
 pub struct ContractVerifier {
     config: ContractVerifierConfig,
-    connection_pool: ConnectionPool<Server>,
+    connection_pool: ConnectionPool<Core>,
 }
 
 impl ContractVerifier {
-    pub fn new(config: ContractVerifierConfig, connection_pool: ConnectionPool<Server>) -> Self {
+    pub fn new(config: ContractVerifierConfig, connection_pool: ConnectionPool<Core>) -> Self {
         Self {
             config,
             connection_pool,
         }
     }
 
     async fn verify(
-        storage: &mut StorageProcessor<'_, Server>,
+        storage: &mut Connection<'_, Core>,
         mut request: VerificationRequest,
         config: ContractVerifierConfig,
     ) -> Result<VerificationInfo, ContractVerifierError> {
@@ -429,7 +429,7 @@ impl ContractVerifier {
     }
 
     async fn process_result(
-        storage: &mut StorageProcessor<'_, Server>,
+        storage: &mut Connection<'_, Core>,
         request_id: usize,
         verification_result: Result<VerificationInfo, ContractVerifierError>,
     ) {
@@ -471,7 +471,7 @@ impl JobProcessor for ContractVerifier {
     const BACKOFF_MULTIPLIER: u64 = 1;
 
     async fn get_next_job(&self) -> anyhow::Result<Option<(Self::JobId, Self::Job)>> {
-        let mut connection = self.connection_pool.access_storage().await.unwrap();
+        let mut connection = self.connection_pool.connection().await.unwrap();
 
         // Time overhead for all operations except for compilation.
         const TIME_OVERHEAD: Duration = Duration::from_secs(10);
@@ -489,7 +489,7 @@ impl JobProcessor for ContractVerifier {
     }
 
     async fn save_failure(&self, job_id: usize, _started_at: Instant, error: String) {
-        let mut connection = self.connection_pool.access_storage().await.unwrap();
+        let mut connection = self.connection_pool.connection().await.unwrap();
 
         connection
             .contract_verification_dal()
@@ -515,7 +515,7 @@ impl JobProcessor for ContractVerifier {
 
             let config: ContractVerifierConfig =
                 ContractVerifierConfig::from_env().context("ContractVerifierConfig")?;
-            let mut connection = connection_pool.access_storage().await.unwrap();
+            let mut connection = connection_pool.connection().await.unwrap();
 
             let job_id = job.id;
             let verification_result = Self::verify(&mut connection, job, config).await;

core/bin/external_node/src/init.rs

@@ -3,7 +3,7 @@
 use anyhow::Context as _;
 use zksync_basic_types::{L1BatchNumber, L2ChainId};
 use zksync_core::sync_layer::genesis::perform_genesis_if_needed;
-use zksync_dal::{ConnectionPool, Server, ServerDals};
+use zksync_dal::{ConnectionPool, Core, CoreDal};
 use zksync_health_check::AppHealthCheck;
 use zksync_object_store::ObjectStoreFactory;
 use zksync_snapshots_applier::SnapshotsApplierConfig;
@@ -20,13 +20,13 @@ enum InitDecision {
 }
 
 pub(crate) async fn ensure_storage_initialized(
-    pool: &ConnectionPool<Server>,
+    pool: &ConnectionPool<Core>,
     main_node_client: &HttpClient,
     app_health: &AppHealthCheck,
     l2_chain_id: L2ChainId,
     consider_snapshot_recovery: bool,
 ) -> anyhow::Result<()> {
-    let mut storage = pool.access_storage_tagged("en").await?;
+    let mut storage = pool.connection_tagged("en").await?;
     let genesis_l1_batch = storage
         .blocks_dal()
         .get_l1_batch_header(L1BatchNumber(0))
@@ -67,7 +67,7 @@ pub(crate) async fn ensure_storage_initialized(
     tracing::info!("Chosen node initialization strategy: {decision:?}");
     match decision {
         InitDecision::Genesis => {
-            let mut storage = pool.access_storage_tagged("en").await?;
+            let mut storage = pool.connection_tagged("en").await?;
             perform_genesis_if_needed(&mut storage, l2_chain_id, main_node_client)
                 .await
                 .context("performing genesis failed")?;

core/bin/external_node/src/main.rs

@@ -33,7 +33,7 @@ use zksync_core::{
         MainNodeClient, SyncState,
     },
 };
-use zksync_dal::{metrics::PostgresMetrics, ConnectionPool, Server, ServerDals};
+use zksync_dal::{metrics::PostgresMetrics, ConnectionPool, Core, CoreDal};
 use zksync_db_connection::healthcheck::ConnectionPoolHealthCheck;
 use zksync_health_check::{AppHealthCheck, HealthStatus, ReactiveHealthCheck};
 use zksync_state::PostgresStorageCaches;
@@ -61,7 +61,7 @@ async fn build_state_keeper(
     action_queue: ActionQueue,
     state_keeper_db_path: String,
     config: &ExternalNodeConfig,
-    connection_pool: ConnectionPool<Server>,
+    connection_pool: ConnectionPool<Core>,
     sync_state: SyncState,
     l2_erc20_bridge_addr: Address,
     miniblock_sealer_handle: MiniblockSealerHandle,
@@ -113,7 +113,7 @@ async fn build_state_keeper(
 
 async fn init_tasks(
     config: &ExternalNodeConfig,
-    connection_pool: ConnectionPool<Server>,
+    connection_pool: ConnectionPool<Core>,
     main_node_client: HttpClient,
     task_handles: &mut Vec<task::JoinHandle<anyhow::Result<()>>>,
     app_health: &AppHealthCheck,
@@ -143,7 +143,7 @@ async fn init_tasks(
     task_handles.push(tokio::spawn(async move {
         loop {
             let protocol_version = pool
-                .access_storage()
+                .connection()
                 .await
                 .unwrap()
                 .protocol_versions_dal()
@@ -222,7 +222,7 @@ async fn init_tasks(
         }
     }));
 
-    let singleton_pool_builder = ConnectionPool::<Server>::singleton(&config.postgres.database_url);
+    let singleton_pool_builder = ConnectionPool::<Core>::singleton(&config.postgres.database_url);
 
     let metadata_calculator_config = MetadataCalculatorConfig {
         db_path: config.required.merkle_tree_path.clone(),
@@ -497,13 +497,13 @@ async fn main() -> anyhow::Result<()> {
         config.consensus = None;
     }
     if let Some(threshold) = config.optional.slow_query_threshold() {
-        ConnectionPool::<Server>::global_config().set_slow_query_threshold(threshold)?;
+        ConnectionPool::<Core>::global_config().set_slow_query_threshold(threshold)?;
     }
     if let Some(threshold) = config.optional.long_connection_threshold() {
-        ConnectionPool::<Server>::global_config().set_long_connection_threshold(threshold)?;
+        ConnectionPool::<Core>::global_config().set_long_connection_threshold(threshold)?;
     }
 
-    let connection_pool = ConnectionPool::<Server>::builder(
+    let connection_pool = ConnectionPool::<Core>::builder(
         &config.postgres.database_url,
         config.postgres.max_connections,
     )
@@ -598,7 +598,7 @@ async fn main() -> anyhow::Result<()> {
     }
     if opt.revert_pending_l1_batch {
         tracing::info!("Rolling pending L1 batch back..");
-        let mut connection = connection_pool.access_storage().await?;
+        let mut connection = connection_pool.connection().await?;
         let sealed_l1_batch_number = connection
             .blocks_dal()
             .get_sealed_l1_batch_number()

core/bin/external_node/src/version_sync_task.rs

@@ -2,7 +2,7 @@ use std::cmp::Ordering;
 
 use anyhow::Context;
 use zksync_basic_types::{L1BatchNumber, MiniblockNumber};
-use zksync_dal::{ConnectionPool, Server, ServerDals};
+use zksync_dal::{ConnectionPool, Core, CoreDal};
 use zksync_types::ProtocolVersionId;
 use zksync_web3_decl::{
     jsonrpsee::http_client::HttpClient,
@@ -27,12 +27,12 @@ pub async fn get_l1_batch_remote_protocol_version(
 
 // Synchronizes protocol version in `l1_batches` and `miniblocks` tables between EN and main node.
 pub async fn sync_versions(
-    connection_pool: ConnectionPool<Server>,
+    connection_pool: ConnectionPool<Core>,
     main_node_client: HttpClient,
 ) -> anyhow::Result<()> {
     tracing::info!("Starting syncing protocol version of blocks");
 
-    let mut connection = connection_pool.access_storage().await?;
+    let mut connection = connection_pool.connection().await?;
 
     // Load the first local batch number with version 22.
     let Some(local_first_v22_l1_batch) = connection

core/bin/snapshots_creator/src/creator.rs

@@ -5,7 +5,7 @@ use std::sync::Arc;
 use anyhow::Context as _;
 use tokio::sync::Semaphore;
 use zksync_config::SnapshotsCreatorConfig;
-use zksync_dal::{ConnectionPool, Server, ServerDals, StorageProcessor};
+use zksync_dal::{Connection, ConnectionPool, Core, CoreDal};
 use zksync_object_store::ObjectStore;
 use zksync_types::{
     snapshots::{
@@ -60,16 +60,16 @@ impl SnapshotProgress {
 #[derive(Debug)]
 pub(crate) struct SnapshotCreator {
     pub blob_store: Arc<dyn ObjectStore>,
-    pub master_pool: ConnectionPool<Server>,
-    pub replica_pool: ConnectionPool<Server>,
+    pub master_pool: ConnectionPool<Core>,
+    pub replica_pool: ConnectionPool<Core>,
     #[cfg(test)]
     pub event_listener: Box<dyn HandleEvent>,
 }
 
 impl SnapshotCreator {
-    async fn connect_to_replica(&self) -> anyhow::Result<StorageProcessor<'_, Server>> {
+    async fn connect_to_replica(&self) -> anyhow::Result<Connection<'_, Core>> {
         self.replica_pool
-            .access_storage_tagged("snapshots_creator")
+            .connection_tagged("snapshots_creator")
             .await
     }
 
@@ -124,7 +124,7 @@ impl SnapshotCreator {
 
         let mut master_conn = self
             .master_pool
-            .access_storage_tagged("snapshots_creator")
+            .connection_tagged("snapshots_creator")
             .await?;
         master_conn
             .snapshots_dal()
@@ -192,7 +192,7 @@ impl SnapshotCreator {
         config: &SnapshotsCreatorConfig,
         min_chunk_count: u64,
         latest_snapshot: Option<&SnapshotMetadata>,
-        conn: &mut StorageProcessor<'_, Server>,
+        conn: &mut Connection<'_, Core>,
     ) -> anyhow::Result<Option<SnapshotProgress>> {
         // We subtract 1 so that after restore, EN node has at least one L1 batch to fetch
         let sealed_l1_batch_number = conn.blocks_dal().get_sealed_l1_batch_number().await?;
@@ -237,7 +237,7 @@ impl SnapshotCreator {
     ) -> anyhow::Result<Option<SnapshotProgress>> {
         let mut master_conn = self
             .master_pool
-            .access_storage_tagged("snapshots_creator")
+            .connection_tagged("snapshots_creator")
             .await?;
         let latest_snapshot = master_conn
             .snapshots_dal()
@@ -302,7 +302,7 @@ impl SnapshotCreator {
 
             let mut master_conn = self
                 .master_pool
-                .access_storage_tagged("snapshots_creator")
+                .connection_tagged("snapshots_creator")
                 .await?;
             master_conn
                 .snapshots_dal()

core/bin/snapshots_creator/src/main.rs

@@ -16,7 +16,7 @@ use zksync_config::{
     configs::{ObservabilityConfig, PrometheusConfig},
     PostgresConfig, SnapshotsCreatorConfig,
 };
-use zksync_dal::{ConnectionPool, Server};
+use zksync_dal::{ConnectionPool, Core};
 use zksync_env_config::{object_store::SnapshotsObjectStoreConfig, FromEnv};
 use zksync_object_store::ObjectStoreFactory;
 
@@ -81,14 +81,14 @@ async fn main() -> anyhow::Result<()> {
     let creator_config =
         SnapshotsCreatorConfig::from_env().context("SnapshotsCreatorConfig::from_env")?;
 
-    let replica_pool = ConnectionPool::<Server>::builder(
+    let replica_pool = ConnectionPool::<Core>::builder(
         postgres_config.replica_url()?,
         creator_config.concurrent_queries_count,
     )
     .build()
     .await?;
 
-    let master_pool = ConnectionPool::<Server>::singleton(postgres_config.master_url()?)
+    let master_pool = ConnectionPool::<Core>::singleton(postgres_config.master_url()?)
         .build()
         .await?;