nim-dagger/dagger/bitswap/pendingblocks.nim

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Poc 2 (#7) * moving protobuf into bitswap * adding block type * reworking bitswap * adding chunker * adding license header * use 1.2.6 * adding fixed size chunker * add blockstore * add iterator to chunker * more bitswap changes * rename ipfs to dagger * rename to dagger * blockstore inherits from BlockProvider * wip - add core block handling logic * smal changes * use proper block store methods * adding asynq heapqueue * wip prepare for bitswap task runner * adding `$` * adding memory store and tests * fixed chunking * extracted desicion engine from bitswap * added helper random funcs * adding testing helpers * only handle seqs * add peer events * cleanup pending blocks on blockstore event * allow nil handlers * move protobuf type helpers * allow initializing block from Cid * testing and fixes * small fixes * expose `<` * spelling * default value * spelling * pending blocks manager * adding stores manager * more tests a wip around bitswap * small changes * merge bitswap and engine for now * for now run only the new poc's tests * add a more complete ci setup * use template in map * remove p2pd * remove go * dont use asyncCheck * few small changes * adding ability to update items * adding multiple task runners * handle cancelation properly * use Result instead of throwing * wip bitswap tests * moving things around * split out engine again * add request and handlers interface * fix tests * wip - engine tests * remove unused imports * fix tests * cleanup block requesting logic * add block request tests * more block requests * add support for max heap * don't use result * use max heap & send block presence in task handler * add task handler tests * rename store to localStore * cleanup & logging * cancel task on stop * don't depend on local store for events * dont use heap queue for wants * add chronicles * fix issue with peer wants * add test for delayed block sends * remove obsolete tests * wip chunker * run all tests * add todo * misc * remove irrelevant files * removing more files * adding helpers for bitswap tests * moved bitswap file * misc * make blocks timeout longer * adjust block timeout * speedup test * compile with threads * import missing crypto * misc * disable threads for now * fix 32 bit platforms * re-enable threads support in tests
2021-02-26 00:23:22 +00:00
## Nim-Dagger
## Copyright (c) 2021 Status Research & Development GmbH
## Licensed under either of
## * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE))
## * MIT license ([LICENSE-MIT](LICENSE-MIT))
## at your option.
## This file may not be copied, modified, or distributed except according to
## those terms.
import std/tables
import pkg/chronicles
import pkg/chronos
import pkg/libp2p
import ../blocktype
logScope:
topics = "dagger bitswap pendingblocks"
type
PendingBlocksManager* = ref object of RootObj
blocks*: Table[Cid, Future[Block]] # pending Block requests
proc addOrAwait*(
p: PendingBlocksManager,
cid: Cid):
Future[Block] {.async.} =
## Add an event for a block
##
if cid notin p.blocks:
p.blocks[cid] = newFuture[Block]()
trace "Adding pending future for block", cid
let blk = p.blocks[cid]
try:
return await blk
except CancelledError as exc:
trace "Blocks cancelled", exc = exc.msg, cid
raise exc
except CatchableError as exc:
trace "Pending WANT failed or expired", exc = exc.msg
finally:
p.blocks.del(cid)
proc resolve*(
p: PendingBlocksManager,
blocks: seq[Block]) =
## Resolve pending blocks
##
for blk in blocks:
# resolve any pending blocks
if blk.cid in p.blocks:
let pending = p.blocks[blk.cid]
if not pending.finished:
trace "Resolving block", cid = $blk.cid
pending.complete(blk)
p.blocks.del(blk.cid)
proc pending*(
p: PendingBlocksManager,
cid: Cid): bool = cid in p.blocks
proc contains*(
p: PendingBlocksManager,
cid: Cid): bool = p.pending(cid)
proc new*(T: type PendingBlocksManager): T =
T(
blocks: initTable[Cid, Future[Block]]()
)