mirror of https://github.com/waku-org/nwaku.git
104 lines
2.5 KiB
Nim
104 lines
2.5 KiB
Nim
import
|
|
std/tables,
|
|
chronos, chronicles, metrics, stew/results,
|
|
libp2p/protocols/protocol,
|
|
libp2p/protobuf/minprotobuf,
|
|
libp2p/stream/connection,
|
|
./message_notifier,
|
|
./../../node/v2/waku_types
|
|
|
|
logScope:
|
|
topics = "wakustore"
|
|
|
|
const
|
|
WakuStoreCodec* = "/vac/waku/store/2.0.0-alpha5"
|
|
|
|
type
|
|
HistoryQuery* = object
|
|
uuid*: string
|
|
topics*: seq[string]
|
|
|
|
HistoryResponse* = object
|
|
uuid*: string
|
|
messages*: seq[WakuMessage]
|
|
|
|
WakuStore* = ref object of LPProtocol
|
|
messages*: seq[WakuMessage]
|
|
|
|
proc init*(T: type HistoryQuery, buffer: seq[byte]): ProtoResult[T] =
|
|
var msg = HistoryQuery()
|
|
let pb = initProtoBuffer(buffer)
|
|
|
|
var topics: seq[string]
|
|
|
|
discard ? pb.getField(1, msg.uuid)
|
|
discard ? pb.getRepeatedField(2, topics)
|
|
|
|
msg.topics = topics
|
|
ok(msg)
|
|
|
|
proc init*(T: type HistoryResponse, buffer: seq[byte]): ProtoResult[T] =
|
|
var msg = HistoryResponse()
|
|
let pb = initProtoBuffer(buffer)
|
|
|
|
var messages: seq[seq[byte]]
|
|
|
|
discard ? pb.getField(1, msg.uuid)
|
|
discard ? pb.getRepeatedField(2, messages)
|
|
|
|
for buf in messages:
|
|
msg.messages.add(? WakuMessage.init(buf))
|
|
|
|
ok(msg)
|
|
|
|
proc encode*(query: HistoryQuery): ProtoBuffer =
|
|
result = initProtoBuffer()
|
|
|
|
result.write(1, query.uuid)
|
|
|
|
for topic in query.topics:
|
|
result.write(2, topic)
|
|
|
|
proc encode*(response: HistoryResponse): ProtoBuffer =
|
|
result = initProtoBuffer()
|
|
|
|
result.write(1, response.uuid)
|
|
|
|
for msg in response.messages:
|
|
result.write(2, msg.encode())
|
|
|
|
proc query(w: WakuStore, query: HistoryQuery): HistoryResponse =
|
|
result = HistoryResponse(uuid: query.uuid, messages: newSeq[WakuMessage]())
|
|
for msg in w.messages:
|
|
if msg.contentTopic in query.topics:
|
|
result.messages.insert(msg)
|
|
|
|
proc init*(T: type WakuStore): T =
|
|
var ws = WakuStore()
|
|
|
|
proc handle(conn: Connection, proto: string) {.async, gcsafe, closure.} =
|
|
var message = await conn.readLp(64*1024)
|
|
var rpc = HistoryQuery.init(message)
|
|
if rpc.isErr:
|
|
return
|
|
|
|
info "received query"
|
|
|
|
let res = ws.query(rpc.value)
|
|
|
|
await conn.writeLp(res.encode().buffer)
|
|
|
|
ws.handler = handle
|
|
ws.codec = WakuStoreCodec
|
|
result = ws
|
|
|
|
proc subscription*(proto: WakuStore): MessageNotificationSubscription =
|
|
## The filter function returns the pubsub filter for the node.
|
|
## This is used to pipe messages into the storage, therefore
|
|
## the filter should be used by the component that receives
|
|
## new messages.
|
|
proc handle(topic: string, msg: WakuMessage) =
|
|
proto.messages.add(msg)
|
|
|
|
MessageNotificationSubscription.init(@[], handle)
|