nim-codex/codex/blocktype.nim

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2022-05-19 19:56:03 +00:00
## Nim-Codex
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
## 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
export tables
import pkg/upraises
push: {.upraises: [].}
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
import pkg/libp2p
import pkg/stew/byteutils
import pkg/questionable
import pkg/questionable/results
import pkg/chronicles
import ./units
import ./utils
import ./formats
import ./errors
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
export errors, formats, units
const
# Size of blocks for storage / network exchange,
# should be divisible by 31 for PoR and by 64 for Leopard ECC
DefaultBlockSize* = NBytes 31 * 64 * 33
type
Block* = ref object of RootObj
cid*: Cid
data*: seq[byte]
template EmptyCid*: untyped =
var
EmptyCid {.global, threadvar.}:
array[CIDv0..CIDv1, Table[MultiCodec, Cid]]
once:
EmptyCid = [
CIDv0: {
multiCodec("sha2-256"): Cid
.init("QmdfTbBqBPQ7VNxZEYEj14VmRuZBkqFbiwReogJgS1zR1n")
.get()
}.toTable,
CIDv1: {
multiCodec("sha2-256"): Cid
.init("bafybeihdwdcefgh4dqkjv67uzcmw7ojee6xedzdetojuzjevtenxquvyku")
.get()
}.toTable,
]
EmptyCid
template EmptyDigests*: untyped =
var
EmptyDigests {.global, threadvar.}:
array[CIDv0..CIDv1, Table[MultiCodec, MultiHash]]
once:
EmptyDigests = [
CIDv0: {
multiCodec("sha2-256"): EmptyCid[CIDv0]
.catch
.get()[multiCodec("sha2-256")]
.catch
.get()
.mhash
.get()
}.toTable,
CIDv1: {
multiCodec("sha2-256"): EmptyCid[CIDv1]
.catch
.get()[multiCodec("sha2-256")]
.catch
.get()
.mhash
.get()
}.toTable,
]
EmptyDigests
template EmptyBlock*: untyped =
var
EmptyBlock {.global, threadvar.}:
array[CIDv0..CIDv1, Table[MultiCodec, Block]]
once:
EmptyBlock = [
CIDv0: {
multiCodec("sha2-256"): Block(
cid: EmptyCid[CIDv0][multiCodec("sha2-256")])
}.toTable,
CIDv1: {
multiCodec("sha2-256"): Block(
cid: EmptyCid[CIDv1][multiCodec("sha2-256")])
}.toTable,
]
EmptyBlock
proc isEmpty*(cid: Cid): bool =
cid == EmptyCid[cid.cidver]
.catch
.get()[cid.mhash.get().mcodec]
.catch
.get()
proc isEmpty*(blk: Block): bool =
blk.cid.isEmpty
proc emptyBlock*(cid: Cid): Block =
EmptyBlock[cid.cidver]
.catch
.get()[cid.mhash.get().mcodec]
.catch
.get()
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
proc `$`*(b: Block): string =
result &= "cid: " & $b.cid
result &= "\ndata: " & string.fromBytes(b.data)
func new*(
T: type Block,
data: openArray[byte] = [],
version = CIDv1,
mcodec = multiCodec("sha2-256"),
codec = multiCodec("raw")
): ?!Block =
## creates a new block for both storage and network IO
##
let
hash = ? MultiHash.digest($mcodec, data).mapFailure
cid = ? Cid.init(version, codec, hash).mapFailure
# TODO: If the hash is `>=` to the data,
# use the Cid as a container!
Block(
cid: cid,
data: @data).success
func new*(
T: type Block,
cid: Cid,
data: openArray[byte],
verify: bool = true
): ?!Block =
## creates a new block for both storage and network IO
##
let
mhash = ? cid.mhash.mapFailure
b = ? Block.new(
data = @data,
version = cid.cidver,
codec = cid.mcodec,
mcodec = mhash.mcodec)
if verify and cid != b.cid:
return "Cid and content don't match!".failure
success b