nimbus-eth1/nimbus/sync/beacon.nim

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# Nimbus
# Copyright (c) 2023-2024 Status Research & Development GmbH
# Licensed under either of
# * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or
# http://www.apache.org/licenses/LICENSE-2.0)
# * MIT license ([LICENSE-MIT](LICENSE-MIT) or
# http://opensource.org/licenses/MIT)
# at your option. This file may not be copied, modified, or distributed
# except according to those terms.
{.push raises: [].}
import
pkg/[chronicles, chronos, eth/p2p, results],
pkg/stew/[interval_set, sorted_set],
../core/chain,
./beacon/[worker, worker_desc, worker/db],
"."/[sync_desc, sync_sched, protocol]
logScope:
Beacon sync activation control update (#2782) * Clarifying/commenting FCU setup condition & small fixes, comments etc. * Update some logging * Reorg metrics updater and activation * Better `async` responsiveness why: Block import does not allow `async` task activation while executing. So allow potential switch after each imported block (rather than a group of 32 blocks.) * Handle resuming after previous sync followed by import why: In this case the ledger state is more recent than the saved sync state. So this is considered a pristine sync where any previous sync state is forgotten. This fixes some assert thrown because of inconsistent internal state at some point. * Provide option for clearing saved beacon sync state before starting syncer why: It would resume with the last state otherwise which might be undesired sometimes. Without RPC available, the syncer typically stops and terminates with the canonical head larger than the base/finalised head. The latter one will be saved as database/ledger state and the canonical head as syncer target. Resuming syncing here will repeat itself. So clearing the syncer state can prevent from starting the syncer unnecessarily avoiding useless actions. * Allow workers to request syncer shutdown from within why: In one-trick-pony mode (after resuming without RPC support) the syncer can be stopped from within soavoiding unnecessary polling. In that case, the syncer can (theoretically) be restarted externally with `startSync()`. * Terminate beacon sync after a single run target is reached why: Stops doing useless polling (typically when there is no RPC available) * Remove crufty comments * Tighten state reload condition when resuming why: Some pathological case might apply if the syncer is stopped while the distance between finalised block and head is very large and the FCU base becomes larger than the locked finalised state. * Verify that finalised number from CL is at least FCU base number why: The FCU base number is determined by the database, non zero if manually imported. The finalised number is passed via RPC by the CL node and will increase over time. Unless fully synced, this number will be pretty low. On the other hand, the FCU call `forkChoice()` will eventually fail if the `finalizedHash` argument refers to something outside the internal chain starting at the FCU base block. * Remove support for completing interrupted sync without RPC support why: Simplifies start/stop logic * Rmove unused import
2024-10-28 16:22:04 +00:00
topics = "beacon sync"
type
BeaconSyncRef* = RunnerSyncRef[BeaconCtxData,BeaconBuddyData]
# ------------------------------------------------------------------------------
# Virtual methods/interface, `mixin` functions
# ------------------------------------------------------------------------------
proc runSetup(ctx: BeaconCtxRef): bool =
Beacon sync activation control update (#2782) * Clarifying/commenting FCU setup condition & small fixes, comments etc. * Update some logging * Reorg metrics updater and activation * Better `async` responsiveness why: Block import does not allow `async` task activation while executing. So allow potential switch after each imported block (rather than a group of 32 blocks.) * Handle resuming after previous sync followed by import why: In this case the ledger state is more recent than the saved sync state. So this is considered a pristine sync where any previous sync state is forgotten. This fixes some assert thrown because of inconsistent internal state at some point. * Provide option for clearing saved beacon sync state before starting syncer why: It would resume with the last state otherwise which might be undesired sometimes. Without RPC available, the syncer typically stops and terminates with the canonical head larger than the base/finalised head. The latter one will be saved as database/ledger state and the canonical head as syncer target. Resuming syncing here will repeat itself. So clearing the syncer state can prevent from starting the syncer unnecessarily avoiding useless actions. * Allow workers to request syncer shutdown from within why: In one-trick-pony mode (after resuming without RPC support) the syncer can be stopped from within soavoiding unnecessary polling. In that case, the syncer can (theoretically) be restarted externally with `startSync()`. * Terminate beacon sync after a single run target is reached why: Stops doing useless polling (typically when there is no RPC available) * Remove crufty comments * Tighten state reload condition when resuming why: Some pathological case might apply if the syncer is stopped while the distance between finalised block and head is very large and the FCU base becomes larger than the locked finalised state. * Verify that finalised number from CL is at least FCU base number why: The FCU base number is determined by the database, non zero if manually imported. The finalised number is passed via RPC by the CL node and will increase over time. Unless fully synced, this number will be pretty low. On the other hand, the FCU call `forkChoice()` will eventually fail if the `finalizedHash` argument refers to something outside the internal chain starting at the FCU base block. * Remove support for completing interrupted sync without RPC support why: Simplifies start/stop logic * Rmove unused import
2024-10-28 16:22:04 +00:00
worker.setup(ctx, "RunSetup")
proc runRelease(ctx: BeaconCtxRef) =
Beacon sync activation control update (#2782) * Clarifying/commenting FCU setup condition & small fixes, comments etc. * Update some logging * Reorg metrics updater and activation * Better `async` responsiveness why: Block import does not allow `async` task activation while executing. So allow potential switch after each imported block (rather than a group of 32 blocks.) * Handle resuming after previous sync followed by import why: In this case the ledger state is more recent than the saved sync state. So this is considered a pristine sync where any previous sync state is forgotten. This fixes some assert thrown because of inconsistent internal state at some point. * Provide option for clearing saved beacon sync state before starting syncer why: It would resume with the last state otherwise which might be undesired sometimes. Without RPC available, the syncer typically stops and terminates with the canonical head larger than the base/finalised head. The latter one will be saved as database/ledger state and the canonical head as syncer target. Resuming syncing here will repeat itself. So clearing the syncer state can prevent from starting the syncer unnecessarily avoiding useless actions. * Allow workers to request syncer shutdown from within why: In one-trick-pony mode (after resuming without RPC support) the syncer can be stopped from within soavoiding unnecessary polling. In that case, the syncer can (theoretically) be restarted externally with `startSync()`. * Terminate beacon sync after a single run target is reached why: Stops doing useless polling (typically when there is no RPC available) * Remove crufty comments * Tighten state reload condition when resuming why: Some pathological case might apply if the syncer is stopped while the distance between finalised block and head is very large and the FCU base becomes larger than the locked finalised state. * Verify that finalised number from CL is at least FCU base number why: The FCU base number is determined by the database, non zero if manually imported. The finalised number is passed via RPC by the CL node and will increase over time. Unless fully synced, this number will be pretty low. On the other hand, the FCU call `forkChoice()` will eventually fail if the `finalizedHash` argument refers to something outside the internal chain starting at the FCU base block. * Remove support for completing interrupted sync without RPC support why: Simplifies start/stop logic * Rmove unused import
2024-10-28 16:22:04 +00:00
worker.release(ctx, "RunRelease")
proc runDaemon(ctx: BeaconCtxRef) {.async.} =
Beacon sync activation control update (#2782) * Clarifying/commenting FCU setup condition & small fixes, comments etc. * Update some logging * Reorg metrics updater and activation * Better `async` responsiveness why: Block import does not allow `async` task activation while executing. So allow potential switch after each imported block (rather than a group of 32 blocks.) * Handle resuming after previous sync followed by import why: In this case the ledger state is more recent than the saved sync state. So this is considered a pristine sync where any previous sync state is forgotten. This fixes some assert thrown because of inconsistent internal state at some point. * Provide option for clearing saved beacon sync state before starting syncer why: It would resume with the last state otherwise which might be undesired sometimes. Without RPC available, the syncer typically stops and terminates with the canonical head larger than the base/finalised head. The latter one will be saved as database/ledger state and the canonical head as syncer target. Resuming syncing here will repeat itself. So clearing the syncer state can prevent from starting the syncer unnecessarily avoiding useless actions. * Allow workers to request syncer shutdown from within why: In one-trick-pony mode (after resuming without RPC support) the syncer can be stopped from within soavoiding unnecessary polling. In that case, the syncer can (theoretically) be restarted externally with `startSync()`. * Terminate beacon sync after a single run target is reached why: Stops doing useless polling (typically when there is no RPC available) * Remove crufty comments * Tighten state reload condition when resuming why: Some pathological case might apply if the syncer is stopped while the distance between finalised block and head is very large and the FCU base becomes larger than the locked finalised state. * Verify that finalised number from CL is at least FCU base number why: The FCU base number is determined by the database, non zero if manually imported. The finalised number is passed via RPC by the CL node and will increase over time. Unless fully synced, this number will be pretty low. On the other hand, the FCU call `forkChoice()` will eventually fail if the `finalizedHash` argument refers to something outside the internal chain starting at the FCU base block. * Remove support for completing interrupted sync without RPC support why: Simplifies start/stop logic * Rmove unused import
2024-10-28 16:22:04 +00:00
await worker.runDaemon(ctx, "RunDaemon")
proc runStart(buddy: BeaconBuddyRef): bool =
Beacon sync activation control update (#2782) * Clarifying/commenting FCU setup condition & small fixes, comments etc. * Update some logging * Reorg metrics updater and activation * Better `async` responsiveness why: Block import does not allow `async` task activation while executing. So allow potential switch after each imported block (rather than a group of 32 blocks.) * Handle resuming after previous sync followed by import why: In this case the ledger state is more recent than the saved sync state. So this is considered a pristine sync where any previous sync state is forgotten. This fixes some assert thrown because of inconsistent internal state at some point. * Provide option for clearing saved beacon sync state before starting syncer why: It would resume with the last state otherwise which might be undesired sometimes. Without RPC available, the syncer typically stops and terminates with the canonical head larger than the base/finalised head. The latter one will be saved as database/ledger state and the canonical head as syncer target. Resuming syncing here will repeat itself. So clearing the syncer state can prevent from starting the syncer unnecessarily avoiding useless actions. * Allow workers to request syncer shutdown from within why: In one-trick-pony mode (after resuming without RPC support) the syncer can be stopped from within soavoiding unnecessary polling. In that case, the syncer can (theoretically) be restarted externally with `startSync()`. * Terminate beacon sync after a single run target is reached why: Stops doing useless polling (typically when there is no RPC available) * Remove crufty comments * Tighten state reload condition when resuming why: Some pathological case might apply if the syncer is stopped while the distance between finalised block and head is very large and the FCU base becomes larger than the locked finalised state. * Verify that finalised number from CL is at least FCU base number why: The FCU base number is determined by the database, non zero if manually imported. The finalised number is passed via RPC by the CL node and will increase over time. Unless fully synced, this number will be pretty low. On the other hand, the FCU call `forkChoice()` will eventually fail if the `finalizedHash` argument refers to something outside the internal chain starting at the FCU base block. * Remove support for completing interrupted sync without RPC support why: Simplifies start/stop logic * Rmove unused import
2024-10-28 16:22:04 +00:00
worker.start(buddy, "RunStart")
proc runStop(buddy: BeaconBuddyRef) =
Beacon sync activation control update (#2782) * Clarifying/commenting FCU setup condition & small fixes, comments etc. * Update some logging * Reorg metrics updater and activation * Better `async` responsiveness why: Block import does not allow `async` task activation while executing. So allow potential switch after each imported block (rather than a group of 32 blocks.) * Handle resuming after previous sync followed by import why: In this case the ledger state is more recent than the saved sync state. So this is considered a pristine sync where any previous sync state is forgotten. This fixes some assert thrown because of inconsistent internal state at some point. * Provide option for clearing saved beacon sync state before starting syncer why: It would resume with the last state otherwise which might be undesired sometimes. Without RPC available, the syncer typically stops and terminates with the canonical head larger than the base/finalised head. The latter one will be saved as database/ledger state and the canonical head as syncer target. Resuming syncing here will repeat itself. So clearing the syncer state can prevent from starting the syncer unnecessarily avoiding useless actions. * Allow workers to request syncer shutdown from within why: In one-trick-pony mode (after resuming without RPC support) the syncer can be stopped from within soavoiding unnecessary polling. In that case, the syncer can (theoretically) be restarted externally with `startSync()`. * Terminate beacon sync after a single run target is reached why: Stops doing useless polling (typically when there is no RPC available) * Remove crufty comments * Tighten state reload condition when resuming why: Some pathological case might apply if the syncer is stopped while the distance between finalised block and head is very large and the FCU base becomes larger than the locked finalised state. * Verify that finalised number from CL is at least FCU base number why: The FCU base number is determined by the database, non zero if manually imported. The finalised number is passed via RPC by the CL node and will increase over time. Unless fully synced, this number will be pretty low. On the other hand, the FCU call `forkChoice()` will eventually fail if the `finalizedHash` argument refers to something outside the internal chain starting at the FCU base block. * Remove support for completing interrupted sync without RPC support why: Simplifies start/stop logic * Rmove unused import
2024-10-28 16:22:04 +00:00
worker.stop(buddy, "RunStop")
proc runPool(buddy: BeaconBuddyRef; last: bool; laps: int): bool =
Beacon sync activation control update (#2782) * Clarifying/commenting FCU setup condition & small fixes, comments etc. * Update some logging * Reorg metrics updater and activation * Better `async` responsiveness why: Block import does not allow `async` task activation while executing. So allow potential switch after each imported block (rather than a group of 32 blocks.) * Handle resuming after previous sync followed by import why: In this case the ledger state is more recent than the saved sync state. So this is considered a pristine sync where any previous sync state is forgotten. This fixes some assert thrown because of inconsistent internal state at some point. * Provide option for clearing saved beacon sync state before starting syncer why: It would resume with the last state otherwise which might be undesired sometimes. Without RPC available, the syncer typically stops and terminates with the canonical head larger than the base/finalised head. The latter one will be saved as database/ledger state and the canonical head as syncer target. Resuming syncing here will repeat itself. So clearing the syncer state can prevent from starting the syncer unnecessarily avoiding useless actions. * Allow workers to request syncer shutdown from within why: In one-trick-pony mode (after resuming without RPC support) the syncer can be stopped from within soavoiding unnecessary polling. In that case, the syncer can (theoretically) be restarted externally with `startSync()`. * Terminate beacon sync after a single run target is reached why: Stops doing useless polling (typically when there is no RPC available) * Remove crufty comments * Tighten state reload condition when resuming why: Some pathological case might apply if the syncer is stopped while the distance between finalised block and head is very large and the FCU base becomes larger than the locked finalised state. * Verify that finalised number from CL is at least FCU base number why: The FCU base number is determined by the database, non zero if manually imported. The finalised number is passed via RPC by the CL node and will increase over time. Unless fully synced, this number will be pretty low. On the other hand, the FCU call `forkChoice()` will eventually fail if the `finalizedHash` argument refers to something outside the internal chain starting at the FCU base block. * Remove support for completing interrupted sync without RPC support why: Simplifies start/stop logic * Rmove unused import
2024-10-28 16:22:04 +00:00
worker.runPool(buddy, last, laps, "RunPool")
proc runPeer(buddy: BeaconBuddyRef) {.async.} =
Beacon sync activation control update (#2782) * Clarifying/commenting FCU setup condition & small fixes, comments etc. * Update some logging * Reorg metrics updater and activation * Better `async` responsiveness why: Block import does not allow `async` task activation while executing. So allow potential switch after each imported block (rather than a group of 32 blocks.) * Handle resuming after previous sync followed by import why: In this case the ledger state is more recent than the saved sync state. So this is considered a pristine sync where any previous sync state is forgotten. This fixes some assert thrown because of inconsistent internal state at some point. * Provide option for clearing saved beacon sync state before starting syncer why: It would resume with the last state otherwise which might be undesired sometimes. Without RPC available, the syncer typically stops and terminates with the canonical head larger than the base/finalised head. The latter one will be saved as database/ledger state and the canonical head as syncer target. Resuming syncing here will repeat itself. So clearing the syncer state can prevent from starting the syncer unnecessarily avoiding useless actions. * Allow workers to request syncer shutdown from within why: In one-trick-pony mode (after resuming without RPC support) the syncer can be stopped from within soavoiding unnecessary polling. In that case, the syncer can (theoretically) be restarted externally with `startSync()`. * Terminate beacon sync after a single run target is reached why: Stops doing useless polling (typically when there is no RPC available) * Remove crufty comments * Tighten state reload condition when resuming why: Some pathological case might apply if the syncer is stopped while the distance between finalised block and head is very large and the FCU base becomes larger than the locked finalised state. * Verify that finalised number from CL is at least FCU base number why: The FCU base number is determined by the database, non zero if manually imported. The finalised number is passed via RPC by the CL node and will increase over time. Unless fully synced, this number will be pretty low. On the other hand, the FCU call `forkChoice()` will eventually fail if the `finalizedHash` argument refers to something outside the internal chain starting at the FCU base block. * Remove support for completing interrupted sync without RPC support why: Simplifies start/stop logic * Rmove unused import
2024-10-28 16:22:04 +00:00
await worker.runPeer(buddy, "RunPeer")
# ------------------------------------------------------------------------------
# Public functions
# ------------------------------------------------------------------------------
proc init*(
T: type BeaconSyncRef;
ethNode: EthereumNode;
chain: ForkedChainRef;
maxPeers: int;
Beacon sync activation control update (#2782) * Clarifying/commenting FCU setup condition & small fixes, comments etc. * Update some logging * Reorg metrics updater and activation * Better `async` responsiveness why: Block import does not allow `async` task activation while executing. So allow potential switch after each imported block (rather than a group of 32 blocks.) * Handle resuming after previous sync followed by import why: In this case the ledger state is more recent than the saved sync state. So this is considered a pristine sync where any previous sync state is forgotten. This fixes some assert thrown because of inconsistent internal state at some point. * Provide option for clearing saved beacon sync state before starting syncer why: It would resume with the last state otherwise which might be undesired sometimes. Without RPC available, the syncer typically stops and terminates with the canonical head larger than the base/finalised head. The latter one will be saved as database/ledger state and the canonical head as syncer target. Resuming syncing here will repeat itself. So clearing the syncer state can prevent from starting the syncer unnecessarily avoiding useless actions. * Allow workers to request syncer shutdown from within why: In one-trick-pony mode (after resuming without RPC support) the syncer can be stopped from within soavoiding unnecessary polling. In that case, the syncer can (theoretically) be restarted externally with `startSync()`. * Terminate beacon sync after a single run target is reached why: Stops doing useless polling (typically when there is no RPC available) * Remove crufty comments * Tighten state reload condition when resuming why: Some pathological case might apply if the syncer is stopped while the distance between finalised block and head is very large and the FCU base becomes larger than the locked finalised state. * Verify that finalised number from CL is at least FCU base number why: The FCU base number is determined by the database, non zero if manually imported. The finalised number is passed via RPC by the CL node and will increase over time. Unless fully synced, this number will be pretty low. On the other hand, the FCU call `forkChoice()` will eventually fail if the `finalizedHash` argument refers to something outside the internal chain starting at the FCU base block. * Remove support for completing interrupted sync without RPC support why: Simplifies start/stop logic * Rmove unused import
2024-10-28 16:22:04 +00:00
chunkSize = 0;
): T =
Flare sync (#2627) * Cosmetics, small fixes, add stashed headers verifier * Remove direct `Era1` support why: Era1 is indirectly supported by using the import tool before syncing. * Clarify database persistent save function. why: Function relied on the last saved state block number which was wrong. It now relies on the tx-level. If it is 0, then data are saved directly. Otherwise the task that owns the tx will do it. * Extracted configuration constants into separate file * Enable single peer mode for debugging * Fix peer losing issue in multi-mode details: Running concurrent download peers was previously programmed as running a batch downloading and storing ~8k headers and then leaving the `async` function to be restarted by a scheduler. This was unfortunate because of occasionally occurring long waiting times for restart. While the time gap until restarting were typically observed a few millisecs, there were always a few outliers which well exceed several seconds. This seemed to let remote peers run into timeouts. * Prefix function names `unprocXxx()` and `stagedYyy()` by `headers` why: There will be other `unproc` and `staged` modules. * Remove cruft, update logging * Fix accounting issue details: When staging after fetching headers from the network, there was an off by 1 error occurring when the result was by one smaller than requested. Also, a whole range was mis-accounted when a peer was terminating connection immediately after responding. * Fix slow/error header accounting when fetching why: Originally set for detecting slow headers in a row, the counter was wrongly extended to general errors. * Ban peers for a while that respond with too few headers continuously why: Some peers only returned one header at a time. If these peers sit on a farm, they might collectively slow down the download process. * Update RPC beacon header updater why: Old function hook has slightly changed its meaning since it was used for snap sync. Also, the old hook is used by other functions already. * Limit number of peers or set to single peer mode details: Merge several concepts, single peer mode being one of it. * Some code clean up, fixings for removing of compiler warnings * De-noise header fetch related sources why: Header download looks relatively stable, so general debugging is not needed, anymore. This is the equivalent of removing the scaffold from the part of the building where work has completed. * More clean up and code prettification for headers stuff * Implement body fetch and block import details: Available headers are used stage blocks by combining existing headers with newly fetched blocks. Then these blocks are imported/executed via `persistBlocks()`. * Logger cosmetics and cleanup * Remove staged block queue debugging details: Feature still available, just not executed anymore * Docu, logging update * Update/simplify `runDaemon()` * Re-calibrate block body requests and soft config for import blocks batch why: * For fetching, larger fetch requests are mostly truncated anyway on MainNet. * For executing, smaller batch sizes reduce the memory needed for the price of longer execution times. * Update metrics counters * Docu update * Some fixes, formatting updates, etc. * Update `borrowed` type: uint -. uint64 also: Always convert to `uint64` rather than `uint` where appropriate
2024-09-27 15:07:42 +00:00
var desc = T()
desc.initSync(ethNode, maxPeers)
Flare sync (#2627) * Cosmetics, small fixes, add stashed headers verifier * Remove direct `Era1` support why: Era1 is indirectly supported by using the import tool before syncing. * Clarify database persistent save function. why: Function relied on the last saved state block number which was wrong. It now relies on the tx-level. If it is 0, then data are saved directly. Otherwise the task that owns the tx will do it. * Extracted configuration constants into separate file * Enable single peer mode for debugging * Fix peer losing issue in multi-mode details: Running concurrent download peers was previously programmed as running a batch downloading and storing ~8k headers and then leaving the `async` function to be restarted by a scheduler. This was unfortunate because of occasionally occurring long waiting times for restart. While the time gap until restarting were typically observed a few millisecs, there were always a few outliers which well exceed several seconds. This seemed to let remote peers run into timeouts. * Prefix function names `unprocXxx()` and `stagedYyy()` by `headers` why: There will be other `unproc` and `staged` modules. * Remove cruft, update logging * Fix accounting issue details: When staging after fetching headers from the network, there was an off by 1 error occurring when the result was by one smaller than requested. Also, a whole range was mis-accounted when a peer was terminating connection immediately after responding. * Fix slow/error header accounting when fetching why: Originally set for detecting slow headers in a row, the counter was wrongly extended to general errors. * Ban peers for a while that respond with too few headers continuously why: Some peers only returned one header at a time. If these peers sit on a farm, they might collectively slow down the download process. * Update RPC beacon header updater why: Old function hook has slightly changed its meaning since it was used for snap sync. Also, the old hook is used by other functions already. * Limit number of peers or set to single peer mode details: Merge several concepts, single peer mode being one of it. * Some code clean up, fixings for removing of compiler warnings * De-noise header fetch related sources why: Header download looks relatively stable, so general debugging is not needed, anymore. This is the equivalent of removing the scaffold from the part of the building where work has completed. * More clean up and code prettification for headers stuff * Implement body fetch and block import details: Available headers are used stage blocks by combining existing headers with newly fetched blocks. Then these blocks are imported/executed via `persistBlocks()`. * Logger cosmetics and cleanup * Remove staged block queue debugging details: Feature still available, just not executed anymore * Docu, logging update * Update/simplify `runDaemon()` * Re-calibrate block body requests and soft config for import blocks batch why: * For fetching, larger fetch requests are mostly truncated anyway on MainNet. * For executing, smaller batch sizes reduce the memory needed for the price of longer execution times. * Update metrics counters * Docu update * Some fixes, formatting updates, etc. * Update `borrowed` type: uint -. uint64 also: Always convert to `uint64` rather than `uint` where appropriate
2024-09-27 15:07:42 +00:00
desc.ctx.pool.nBodiesBatch = chunkSize
desc.ctx.pool.chain = chain
Flare sync (#2627) * Cosmetics, small fixes, add stashed headers verifier * Remove direct `Era1` support why: Era1 is indirectly supported by using the import tool before syncing. * Clarify database persistent save function. why: Function relied on the last saved state block number which was wrong. It now relies on the tx-level. If it is 0, then data are saved directly. Otherwise the task that owns the tx will do it. * Extracted configuration constants into separate file * Enable single peer mode for debugging * Fix peer losing issue in multi-mode details: Running concurrent download peers was previously programmed as running a batch downloading and storing ~8k headers and then leaving the `async` function to be restarted by a scheduler. This was unfortunate because of occasionally occurring long waiting times for restart. While the time gap until restarting were typically observed a few millisecs, there were always a few outliers which well exceed several seconds. This seemed to let remote peers run into timeouts. * Prefix function names `unprocXxx()` and `stagedYyy()` by `headers` why: There will be other `unproc` and `staged` modules. * Remove cruft, update logging * Fix accounting issue details: When staging after fetching headers from the network, there was an off by 1 error occurring when the result was by one smaller than requested. Also, a whole range was mis-accounted when a peer was terminating connection immediately after responding. * Fix slow/error header accounting when fetching why: Originally set for detecting slow headers in a row, the counter was wrongly extended to general errors. * Ban peers for a while that respond with too few headers continuously why: Some peers only returned one header at a time. If these peers sit on a farm, they might collectively slow down the download process. * Update RPC beacon header updater why: Old function hook has slightly changed its meaning since it was used for snap sync. Also, the old hook is used by other functions already. * Limit number of peers or set to single peer mode details: Merge several concepts, single peer mode being one of it. * Some code clean up, fixings for removing of compiler warnings * De-noise header fetch related sources why: Header download looks relatively stable, so general debugging is not needed, anymore. This is the equivalent of removing the scaffold from the part of the building where work has completed. * More clean up and code prettification for headers stuff * Implement body fetch and block import details: Available headers are used stage blocks by combining existing headers with newly fetched blocks. Then these blocks are imported/executed via `persistBlocks()`. * Logger cosmetics and cleanup * Remove staged block queue debugging details: Feature still available, just not executed anymore * Docu, logging update * Update/simplify `runDaemon()` * Re-calibrate block body requests and soft config for import blocks batch why: * For fetching, larger fetch requests are mostly truncated anyway on MainNet. * For executing, smaller batch sizes reduce the memory needed for the price of longer execution times. * Update metrics counters * Docu update * Some fixes, formatting updates, etc. * Update `borrowed` type: uint -. uint64 also: Always convert to `uint64` rather than `uint` where appropriate
2024-09-27 15:07:42 +00:00
desc
Beacon sync activation control update (#2782) * Clarifying/commenting FCU setup condition & small fixes, comments etc. * Update some logging * Reorg metrics updater and activation * Better `async` responsiveness why: Block import does not allow `async` task activation while executing. So allow potential switch after each imported block (rather than a group of 32 blocks.) * Handle resuming after previous sync followed by import why: In this case the ledger state is more recent than the saved sync state. So this is considered a pristine sync where any previous sync state is forgotten. This fixes some assert thrown because of inconsistent internal state at some point. * Provide option for clearing saved beacon sync state before starting syncer why: It would resume with the last state otherwise which might be undesired sometimes. Without RPC available, the syncer typically stops and terminates with the canonical head larger than the base/finalised head. The latter one will be saved as database/ledger state and the canonical head as syncer target. Resuming syncing here will repeat itself. So clearing the syncer state can prevent from starting the syncer unnecessarily avoiding useless actions. * Allow workers to request syncer shutdown from within why: In one-trick-pony mode (after resuming without RPC support) the syncer can be stopped from within soavoiding unnecessary polling. In that case, the syncer can (theoretically) be restarted externally with `startSync()`. * Terminate beacon sync after a single run target is reached why: Stops doing useless polling (typically when there is no RPC available) * Remove crufty comments * Tighten state reload condition when resuming why: Some pathological case might apply if the syncer is stopped while the distance between finalised block and head is very large and the FCU base becomes larger than the locked finalised state. * Verify that finalised number from CL is at least FCU base number why: The FCU base number is determined by the database, non zero if manually imported. The finalised number is passed via RPC by the CL node and will increase over time. Unless fully synced, this number will be pretty low. On the other hand, the FCU call `forkChoice()` will eventually fail if the `finalizedHash` argument refers to something outside the internal chain starting at the FCU base block. * Remove support for completing interrupted sync without RPC support why: Simplifies start/stop logic * Rmove unused import
2024-10-28 16:22:04 +00:00
proc start*(desc: BeaconSyncRef): bool =
desc.startSync()
proc stop*(desc: BeaconSyncRef) =
desc.stopSync()
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