318 lines
9.5 KiB
Nim
318 lines
9.5 KiB
Nim
## Nim-Codex
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## Copyright (c) 2021 Status Research & Development GmbH
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## Licensed under either of
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## * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE))
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## * MIT license ([LICENSE-MIT](LICENSE-MIT))
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## at your option.
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## This file may not be copied, modified, or distributed except according to
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## those terms.
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import pkg/upraises
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push: {.upraises: [].}
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import std/sequtils
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import pkg/questionable
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import pkg/questionable/results
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import pkg/chronicles
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import pkg/chronos
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import pkg/presto
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import pkg/libp2p
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import pkg/stew/base10
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import pkg/stew/byteutils
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import pkg/confutils
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import pkg/libp2p/routing_record
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import pkg/libp2pdht/discv5/spr as spr
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import ../node
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import ../blocktype
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import ../conf
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import ../contracts
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import ../streams
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import ./coders
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import ./json
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logScope:
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topics = "codex restapi"
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proc validate(
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pattern: string,
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value: string): int
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{.gcsafe, raises: [Defect].} =
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0
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proc initRestApi*(node: CodexNodeRef, conf: CodexConf): RestRouter =
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var router = RestRouter.init(validate)
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router.api(
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MethodGet,
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"/api/codex/v1/connect/{peerId}") do (
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peerId: PeerId,
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addrs: seq[MultiAddress]) -> RestApiResponse:
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## Connect to a peer
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##
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## If `addrs` param is supplied, it will be used to
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## dial the peer, otherwise the `peerId` is used
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## to invoke peer discovery, if it succeeds
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## the returned addresses will be used to dial
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##
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## `addrs` the listening addresses of the peers to dial, eg the one specified with `--listen-addrs`
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##
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if peerId.isErr:
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return RestApiResponse.error(
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Http400,
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$peerId.error())
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let addresses = if addrs.isOk and addrs.get().len > 0:
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addrs.get()
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else:
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without peerRecord =? (await node.findPeer(peerId.get())):
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return RestApiResponse.error(
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Http400,
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"Unable to find Peer!")
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peerRecord.addresses.mapIt(it.address)
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try:
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await node.connect(peerId.get(), addresses)
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return RestApiResponse.response("Successfully connected to peer")
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except DialFailedError:
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return RestApiResponse.error(Http400, "Unable to dial peer")
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except CatchableError:
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return RestApiResponse.error(Http400, "Unknown error dialling peer")
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router.api(
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MethodGet,
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"/api/codex/v1/download/{id}") do (
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id: Cid, resp: HttpResponseRef) -> RestApiResponse:
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## Download a file from the node in a streaming
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## manner
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##
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if id.isErr:
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return RestApiResponse.error(
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Http400,
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$id.error())
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var
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stream: LPStream
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var bytes = 0
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try:
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without stream =? (await node.retrieve(id.get())), error:
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return RestApiResponse.error(Http404, error.msg)
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resp.addHeader("Content-Type", "application/octet-stream")
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await resp.prepareChunked()
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while not stream.atEof:
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var
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buff = newSeqUninitialized[byte](BlockSize)
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len = await stream.readOnce(addr buff[0], buff.len)
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buff.setLen(len)
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if buff.len <= 0:
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break
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bytes += buff.len
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trace "Sending chunk", size = buff.len
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await resp.sendChunk(addr buff[0], buff.len)
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await resp.finish()
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except CatchableError as exc:
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trace "Excepting streaming blocks", exc = exc.msg
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return RestApiResponse.error(Http500)
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finally:
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trace "Sent bytes", cid = id.get(), bytes
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if not stream.isNil:
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await stream.close()
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router.rawApi(
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MethodPost,
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"/api/codex/v1/storage/request/{cid}") do (cid: Cid) -> RestApiResponse:
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## Create a request for storage
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##
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## cid - the cid of a previously uploaded dataset
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## duration - the duration of the request in seconds
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## proofProbability - how often storage proofs are required
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## reward - the maximum amount of tokens paid per second per slot to hosts the client is willing to pay
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## expiry - timestamp, in seconds, when the request expires if the Request does not find requested amount of nodes to host the data
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## nodes - minimal number of nodes the content should be stored on
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## tolerance - allowed number of nodes that can be lost before pronouncing the content lost
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## colateral - requested collateral from hosts when they fill slot
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without cid =? cid.tryGet.catch, error:
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return RestApiResponse.error(Http400, error.msg)
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let body = await request.getBody()
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without params =? StorageRequestParams.fromJson(body), error:
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return RestApiResponse.error(Http400, error.msg)
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let nodes = params.nodes |? 1
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let tolerance = params.tolerance |? 0
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without purchaseId =? await node.requestStorage(
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cid,
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params.duration,
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params.proofProbability,
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nodes,
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tolerance,
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params.reward,
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params.collateral,
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params.expiry), error:
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return RestApiResponse.error(Http500, error.msg)
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return RestApiResponse.response(purchaseId.toHex)
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router.rawApi(
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MethodPost,
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"/api/codex/v1/upload") do (
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) -> RestApiResponse:
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## Upload a file in a streaming manner
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##
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trace "Handling file upload"
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var bodyReader = request.getBodyReader()
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if bodyReader.isErr():
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return RestApiResponse.error(Http500)
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# Attempt to handle `Expect` header
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# some clients (curl), wait 1000ms
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# before giving up
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#
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await request.handleExpect()
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let
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reader = bodyReader.get()
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try:
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without cid =? (
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await node.store(AsyncStreamWrapper.new(reader = AsyncStreamReader(reader)))), error:
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trace "Error uploading file", exc = error.msg
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return RestApiResponse.error(Http500, error.msg)
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trace "Uploaded file", cid
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return RestApiResponse.response($cid)
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except CancelledError:
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return RestApiResponse.error(Http500)
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except AsyncStreamError:
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return RestApiResponse.error(Http500)
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finally:
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await reader.closeWait()
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# if we got here something went wrong?
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return RestApiResponse.error(Http500)
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router.api(
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MethodPost,
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"/api/codex/v1/debug/chronicles/loglevel") do (
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level: Option[string]) -> RestApiResponse:
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## Set log level at run time
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##
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## e.g. `chronicles/loglevel?level=DEBUG`
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##
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## `level` - chronicles log level
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##
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without res =? level and level =? res:
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return RestApiResponse.error(Http400, "Missing log level")
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try:
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{.gcsafe.}:
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updateLogLevel(level)
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except CatchableError as exc:
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return RestApiResponse.error(Http500, exc.msg)
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return RestApiResponse.response("")
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router.api(
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MethodGet,
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"/api/codex/v1/debug/info") do () -> RestApiResponse:
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## Print rudimentary node information
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##
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let
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json = %*{
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"id": $node.switch.peerInfo.peerId,
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"addrs": node.switch.peerInfo.addrs.mapIt( $it ),
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"repo": $conf.dataDir,
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"spr":
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if node.discovery.dhtRecord.isSome:
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node.discovery.dhtRecord.get.toURI
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else:
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"",
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"codex": {
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"version": $codexVersion,
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"revision": $codexRevision
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}
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}
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return RestApiResponse.response($json)
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router.api(
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MethodGet,
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"/api/codex/v1/sales/availability") do () -> RestApiResponse:
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## Returns storage that is for sale
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without contracts =? node.contracts.host:
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return RestApiResponse.error(Http503, "Sales unavailable")
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without unused =? (await contracts.sales.context.reservations.unused), err:
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return RestApiResponse.error(Http500, err.msg)
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let json = %unused
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return RestApiResponse.response($json)
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router.rawApi(
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MethodPost,
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"/api/codex/v1/sales/availability") do () -> RestApiResponse:
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## Add available storage to sell
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##
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## size - size of available storage in bytes
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## duration - maximum time the storage should be sold for (in seconds)
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## minPrice - minimum price to be paid (in amount of tokens)
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## maxCollateral - maximum collateral user is willing to pay per filled Slot (in amount of tokens)
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without contracts =? node.contracts.host:
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return RestApiResponse.error(Http503, "Sales unavailable")
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let body = await request.getBody()
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without availability =? Availability.fromJson(body), error:
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return RestApiResponse.error(Http400, error.msg)
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let reservations = contracts.sales.context.reservations
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if not reservations.hasAvailable(availability.size.truncate(uint)):
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return RestApiResponse.error(Http422, "Not enough storage quota")
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if err =? (await reservations.reserve(availability)).errorOption:
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return RestApiResponse.error(Http500, err.msg)
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let json = %availability
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return RestApiResponse.response($json)
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router.api(
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MethodGet,
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"/api/codex/v1/storage/purchases/{id}") do (
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id: PurchaseId) -> RestApiResponse:
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without contracts =? node.contracts.client:
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return RestApiResponse.error(Http503, "Purchasing unavailable")
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without id =? id.tryGet.catch, error:
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return RestApiResponse.error(Http400, error.msg)
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without purchase =? contracts.purchasing.getPurchase(id):
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return RestApiResponse.error(Http404)
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let json = %purchase
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return RestApiResponse.response($json)
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return router
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