import std/os import std/options import std/math import pkg/asynctest import pkg/chronos import pkg/chronicles import pkg/stew/byteutils import pkg/nitro import pkg/libp2p import pkg/libp2pdht/discv5/protocol as discv5 import pkg/codex/stores import pkg/codex/blockexchange import pkg/codex/chunker import pkg/codex/node import pkg/codex/manifest import pkg/codex/discovery import pkg/codex/blocktype as bt import ./helpers suite "Test Node": let (path, _, _) = instantiationInfo(-2, fullPaths = true) # get this file's name var file: File chunker: Chunker switch: Switch wallet: WalletRef network: BlockExcNetwork localStore: CacheStore engine: BlockExcEngine store: NetworkStore node: CodexNodeRef blockDiscovery: Discovery peerStore: PeerCtxStore pendingBlocks: PendingBlocksManager discovery: DiscoveryEngine proc fetch(T: type Manifest, chunker: Chunker): Future[Manifest] {.async.} = # Collect blocks from Chunker into Manifest var manifest = Manifest.new().tryGet() while ( let chunk = await chunker.getBytes(); chunk.len > 0): let blk = bt.Block.new(chunk).tryGet() (await localStore.putBlock(blk)).tryGet() manifest.add(blk.cid) return manifest proc retrieve(cid: Cid): Future[seq[byte]] {.async.} = # Retrieve an entire file contents by file Cid let oddChunkSize = math.trunc(BlockSize/1.359).int # Let's check that node.retrieve can correctly rechunk data stream = (await node.retrieve(cid)).tryGet() var data: seq[byte] while not stream.atEof: var buf = newSeq[byte](oddChunkSize) res = await stream.readOnce(addr buf[0], oddChunkSize) check res <= oddChunkSize buf.setLen(res) data &= buf return data setup: file = open(path.splitFile().dir /../ "fixtures" / "test.jpg") chunker = FileChunker.new(file = file, chunkSize = BlockSize) switch = newStandardSwitch() wallet = WalletRef.new(EthPrivateKey.random()) network = BlockExcNetwork.new(switch) localStore = CacheStore.new() blockDiscovery = Discovery.new(switch.peerInfo.privateKey) peerStore = PeerCtxStore.new() pendingBlocks = PendingBlocksManager.new() discovery = DiscoveryEngine.new(localStore, peerStore, network, blockDiscovery, pendingBlocks) engine = BlockExcEngine.new(localStore, wallet, network, discovery, peerStore, pendingBlocks) store = NetworkStore.new(engine, localStore) node = CodexNodeRef.new(switch, store, engine, nil, blockDiscovery) # TODO: pass `Erasure` await node.start() teardown: close(file) await node.stop() test "Fetch Manifest": let manifest = await Manifest.fetch(chunker) manifestBlock = bt.Block.new( manifest.encode().tryGet(), codec = DagPBCodec ).tryGet() (await localStore.putBlock(manifestBlock)).tryGet() let fetched = (await node.fetchManifest(manifestBlock.cid)).tryGet() check: fetched.cid == manifest.cid fetched.blocks == manifest.blocks test "Block Batching": let manifest = await Manifest.fetch(chunker) for batchSize in 1..12: (await node.fetchBatched( manifest, batchSize = batchSize, proc(blocks: seq[bt.Block]) {.gcsafe, async.} = check blocks.len > 0 and blocks.len <= batchSize )).tryGet() test "Store and retrieve Data Stream": let stream = BufferStream.new() storeFut = node.store(stream) oddChunkSize = math.trunc(BlockSize/3.14).int # Let's check that node.store can correctly rechunk these odd chunks oddChunker = FileChunker.new(file = file, chunkSize = oddChunkSize, pad = false) # TODO: doesn't work with pad=tue var original: seq[byte] try: while ( let chunk = await oddChunker.getBytes(); chunk.len > 0): original &= chunk await stream.pushData(chunk) finally: await stream.pushEof() await stream.close() let manifestCid = (await storeFut).tryGet() check: (await localStore.hasBlock(manifestCid)).tryGet() let manifestBlock = (await localStore.getBlock(manifestCid)).tryGet() localManifest = Manifest.decode(manifestBlock).tryGet() let data = await retrieve(manifestCid) check: data.len == localManifest.originalBytes data.len == original.len sha256.digest(data) == sha256.digest(original) test "Retrieve One Block": let testString = "Block 1" blk = bt.Block.new(testString.toBytes).tryGet() (await localStore.putBlock(blk)).tryGet() let stream = (await node.retrieve(blk.cid)).tryGet() var data = newSeq[byte](testString.len) await stream.readExactly(addr data[0], data.len) check string.fromBytes(data) == testString