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https://github.com/waku-org/nwaku.git
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refactor(waku-store): deprecate waku store callback methods
This commit is contained in:
Lorenzo Delgado
Lorenzo Delgado
parent
2c4730c850
commit
7a30e485ec
File diff suppressed because it is too large
Load Diff
@ -54,6 +54,7 @@ const MaxRpcSize = StoreMaxPageSize * MaxWakuMessageSize + 64*1024 # We add a 64
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# Error types (metric label values)
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const
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storeFailure = "store_failure"
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dialFailure = "dial_failure"
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decodeRpcFailure = "decode_rpc_failure"
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peerNotFoundFailure = "peer_not_found_failure"
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@ -202,8 +203,9 @@ proc setPeer*(ws: WakuStore, peer: RemotePeerInfo) =
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ws.peerManager.addPeer(peer, WakuStoreCodec)
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waku_store_peers.inc()
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proc handleMessage*(w: WakuStore, topic: string, msg: WakuMessage) {.async.} =
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if (not w.persistMessages):
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if not w.persistMessages:
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# Store is mounted but new messages should not be stored
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return
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@ -220,10 +222,10 @@ proc handleMessage*(w: WakuStore, topic: string, msg: WakuMessage) {.async.} =
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let addRes = w.messages.add(IndexedWakuMessage(msg: msg, index: index, pubsubTopic: topic))
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if addRes.isErr:
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if addRes.isErr():
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trace "Attempt to add message to store failed", msg=msg, index=index, err=addRes.error()
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waku_store_errors.inc(labelValues = [$(addRes.error())])
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return # Do not attempt to store in persistent DB
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return
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waku_store_messages.set(w.messages.len.int64, labelValues = ["stored"])
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@ -231,16 +233,37 @@ proc handleMessage*(w: WakuStore, topic: string, msg: WakuMessage) {.async.} =
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return
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let res = w.store.put(index, msg, topic)
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if res.isErr:
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trace "failed to store messages", err = res.error
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waku_store_errors.inc(labelValues = ["store_failure"])
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if res.isErr():
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trace "failed to store messages", err=res.error()
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waku_store_errors.inc(labelValues = [storeFailure])
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# TODO: Remove after converting the query method into a non-callback method
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type QueryHandlerFunc* = proc(response: HistoryResponse) {.gcsafe, closure.}
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proc query*(w: WakuStore, query: HistoryQuery, handler: QueryHandlerFunc) {.async, gcsafe.} =
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# @TODO We need to be more stratigic about which peers we dial. Right now we just set one on the service.
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proc query(w: WakuStore, req: HistoryQuery, peer: RemotePeerInfo): Future[WakuStoreResult[HistoryResponse]] {.async, gcsafe.} =
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let connOpt = await w.peerManager.dialPeer(peer, WakuStoreCodec)
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if connOpt.isNone():
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waku_store_errors.inc(labelValues = [dialFailure])
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return err(dialFailure)
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let connection = connOpt.get()
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let rpc = HistoryRPC(requestId: generateRequestId(w.rng), query: req)
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await connection.writeLP(rpc.encode().buffer)
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var message = await connOpt.get().readLp(MaxRpcSize.int)
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let response = HistoryRPC.init(message)
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if response.isErr():
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error "failed to decode response"
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waku_store_errors.inc(labelValues = [decodeRpcFailure])
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return err(decodeRpcFailure)
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waku_store_messages.set(response.value.response.messages.len.int64, labelValues = ["retrieved"])
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return ok(response.value.response)
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proc query*(w: WakuStore, req: HistoryQuery): Future[WakuStoreResult[HistoryResponse]] {.async, gcsafe.} =
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# TODO: We need to be more stratigic about which peers we dial. Right now we just set one on the service.
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# Ideally depending on the query and our set of peers we take a subset of ideal peers.
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# This will require us to check for various factors such as:
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# - which topics they track
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@ -248,123 +271,98 @@ proc query*(w: WakuStore, query: HistoryQuery, handler: QueryHandlerFunc) {.asyn
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# - default store peer?
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let peerOpt = w.peerManager.selectPeer(WakuStoreCodec)
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if peerOpt.isNone():
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error "no suitable remote peers"
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waku_store_errors.inc(labelValues = [peerNotFoundFailure])
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return err(peerNotFoundFailure)
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return await w.query(req, peerOpt.get())
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proc query*(w: WakuStore, req: HistoryQuery, handler: QueryHandlerFunc) {.async, gcsafe,
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deprecated: "Use the no-callback version of this method".} =
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let response = await w.query(req)
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if response.isErr():
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error "history query failed", error=response.error()
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return
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let connOpt = await w.peerManager.dialPeer(peerOpt.get(), WakuStoreCodec)
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if connOpt.isNone():
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# @TODO more sophisticated error handling here
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error "failed to connect to remote peer"
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waku_store_errors.inc(labelValues = [dialFailure])
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return
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await connOpt.get().writeLP(HistoryRPC(requestId: generateRequestId(w.rng),
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query: query).encode().buffer)
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var message = await connOpt.get().readLp(MaxRpcSize.int)
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let response = HistoryRPC.init(message)
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if response.isErr:
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error "failed to decode response"
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waku_store_errors.inc(labelValues = [decodeRpcFailure])
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return
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waku_store_messages.set(response.value.response.messages.len.int64, labelValues = ["retrieved"])
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handler(response.value.response)
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handler(response.get())
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## 21/WAKU2-FAULT-TOLERANT-STORE
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proc queryFrom*(w: WakuStore, query: HistoryQuery, handler: QueryHandlerFunc, peer: RemotePeerInfo): Future[WakuStoreResult[uint64]] {.async, gcsafe.} =
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## sends the query to the given peer
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## returns the number of retrieved messages if no error occurs, otherwise returns the error string
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# TODO dialPeer add it to the list of known peers, while it does not cause any issue but might be unnecessary
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let connOpt = await w.peerManager.dialPeer(peer, WakuStoreCodec)
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proc queryFrom*(w: WakuStore, req: HistoryQuery, handler: QueryHandlerFunc, peer: RemotePeerInfo): Future[WakuStoreResult[uint64]] {.async, gcsafe,
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deprecated: "Use the query() no-callback procedure instead".} =
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## Sends the query to the given peer. Returns the number of retrieved messages if no error occurs, otherwise returns the error string
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# TODO: dialPeer add it to the list of known peers, while it does not cause any issue but might be unnecessary
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let res = await w.query(req, peer)
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if res.isErr():
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return err(res.error())
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let response = res.get()
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if connOpt.isNone():
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error "failed to connect to remote peer"
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waku_store_errors.inc(labelValues = [dialFailure])
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return err("failed to connect to remote peer")
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await connOpt.get().writeLP(HistoryRPC(requestId: generateRequestId(w.rng),
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query: query).encode().buffer)
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debug "query is sent", query=query
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var message = await connOpt.get().readLp(MaxRpcSize.int)
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let response = HistoryRPC.init(message)
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debug "response is received"
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if response.isErr:
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error "failed to decode response"
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waku_store_errors.inc(labelValues = [decodeRpcFailure])
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return err("failed to decode response")
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waku_store_messages.set(response.value.response.messages.len.int64, labelValues = ["retrieved"])
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handler(response.value.response)
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return ok(response.value.response.messages.len.uint64)
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handler(response)
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return ok(response.messages.len.uint64)
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proc queryFromWithPaging*(w: WakuStore, query: HistoryQuery, peer: RemotePeerInfo): Future[WakuStoreResult[seq[WakuMessage]]] {.async, gcsafe.} =
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## a thin wrapper for queryFrom
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## sends the query to the given peer
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## when the query has a valid pagingInfo, it retrieves the historical messages in pages
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## returns all the fetched messages if no error occurs, otherwise returns an error string
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debug "queryFromWithPaging is called"
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var messageList: seq[WakuMessage]
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# make a copy of the query
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var q = query
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debug "query is", q=q
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## A thin wrapper for query. Sends the query to the given peer. when the query has a valid pagingInfo,
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## it retrieves the historical messages in pages.
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## Returns all the fetched messages, if error occurs, returns an error string
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var hasNextPage = true
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proc handler(response: HistoryResponse) {.gcsafe.} =
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# store messages
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for m in response.messages.items: messageList.add(m)
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# check whether it is the last page
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hasNextPage = (response.pagingInfo.pageSize != 0)
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debug "hasNextPage", hasNextPage=hasNextPage
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# Make a copy of the query
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var req = query
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# update paging cursor
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q.pagingInfo.cursor = response.pagingInfo.cursor
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debug "next paging info", pagingInfo=q.pagingInfo
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var messageList: seq[WakuMessage] = @[]
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# fetch the history in pages
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while (hasNextPage):
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let successResult = await w.queryFrom(q, handler, peer)
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if not successResult.isOk: return err("failed to resolve the query")
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debug "hasNextPage", hasNextPage=hasNextPage
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# Fetch the history in pages
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while true:
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let res = await w.query(req, peer)
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if res.isErr():
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return err(res.error())
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let response = res.get()
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messageList.add(response.messages)
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# Check whether it is the last page
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if response.pagingInfo.pageSize == 0:
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break
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# Update paging cursor
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req.pagingInfo.cursor = response.pagingInfo.cursor
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return ok(messageList)
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proc queryLoop(w: WakuStore, query: HistoryQuery, candidateList: seq[RemotePeerInfo]): Future[WakuStoreResult[seq[WakuMessage]]] {.async, gcsafe.} =
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## loops through the candidateList in order and sends the query to each
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## once all responses have been received, the retrieved messages are consolidated into one deduplicated list
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## if no messages have been retrieved, the returned future will resolve into a MessagesResult result holding an empty seq.
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var futureList: seq[Future[WakuStoreResult[seq[WakuMessage]]]]
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for peer in candidateList.items:
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futureList.add(w.queryFromWithPaging(query, peer))
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await allFutures(futureList) # all(), which returns a Future[seq[T]], has been deprecated
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proc queryLoop(w: WakuStore, req: HistoryQuery, candidateList: seq[RemotePeerInfo]): Future[WakuStoreResult[seq[WakuMessage]]] {.async, gcsafe.} =
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## Loops through the peers candidate list in order and sends the query to each
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##
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## Once all responses have been received, the retrieved messages are consolidated into one deduplicated list.
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## if no messages have been retrieved, the returned future will resolve into a result holding an empty seq.
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let queriesList = candidateList.mapIt(w.queryFromWithPaging(req, it))
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let messagesList = futureList
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await allFutures(queriesList)
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let messagesList = queriesList
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.map(proc (fut: Future[WakuStoreResult[seq[WakuMessage]]]): seq[WakuMessage] =
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if fut.completed() and fut.read().isOk(): # completed() just as a sanity check. These futures have been awaited before using allFutures()
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fut.read().value
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else:
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@[]
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# These futures have been awaited before using allFutures(). Call completed() just as a sanity check.
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if not fut.completed() or fut.read().isErr():
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return @[]
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fut.read().value
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)
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.concat()
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.deduplicate()
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if messagesList.len != 0:
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return ok(messagesList.deduplicate())
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else:
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debug "failed to resolve the query"
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if messagesList.len == 0:
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return err("failed to resolve the query")
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proc resume*(ws: WakuStore, peerList: Option[seq[RemotePeerInfo]] = none(seq[RemotePeerInfo]), pageSize: uint64 = DefaultPageSize): Future[WakuStoreResult[uint64]] {.async, gcsafe.} =
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return ok(messagesList)
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proc resume*(w: WakuStore,
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peerList: Option[seq[RemotePeerInfo]] = none(seq[RemotePeerInfo]),
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pageSize: uint64 = DefaultPageSize,
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pubsubTopic = DefaultTopic): Future[WakuStoreResult[uint64]] {.async, gcsafe.} =
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## resume proc retrieves the history of waku messages published on the default waku pubsub topic since the last time the waku store node has been online
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## messages are stored in the store node's messages field and in the message db
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## the offline time window is measured as the difference between the current time and the timestamp of the most recent persisted waku message
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@ -375,134 +373,126 @@ proc resume*(ws: WakuStore, peerList: Option[seq[RemotePeerInfo]] = none(seq[Rem
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## if no peerList is passed, one of the peers in the underlying peer manager unit of the store protocol is picked randomly to fetch the history from.
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## The history gets fetched successfully if the dialed peer has been online during the queried time window.
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## the resume proc returns the number of retrieved messages if no error occurs, otherwise returns the error string
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var lastSeenTime = Timestamp(0)
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var currentTime = getNanosecondTime(epochTime())
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debug "resume", currentEpochTime=currentTime
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let lastSeenItem = ws.messages.last()
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let lastSeenItem = w.messages.last()
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if lastSeenItem.isOk():
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lastSeenTime = lastSeenItem.get().msg.timestamp
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var lastSeenTime = if lastSeenItem.isOk(): lastSeenItem.get().msg.timestamp
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else: Timestamp(0)
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# adjust the time window with an offset of 20 seconds
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let offset: Timestamp = getNanosecondTime(20)
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currentTime = currentTime + offset
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lastSeenTime = max(lastSeenTime - offset, 0)
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debug "the offline time window is", lastSeenTime=lastSeenTime, currentTime=currentTime
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let
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pinfo = PagingInfo(direction:PagingDirection.FORWARD, pageSize: pageSize)
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rpc = HistoryQuery(pubsubTopic: DefaultTopic, startTime: lastSeenTime, endTime: currentTime, pagingInfo: pinfo)
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var dismissed: uint = 0
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var added: uint = 0
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proc save(msgList: seq[WakuMessage]) =
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debug "save proc is called"
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# exclude index from the comparison criteria
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let req = HistoryQuery(
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pubsubTopic: pubsubTopic,
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startTime: lastSeenTime,
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endTime: currentTime,
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pagingInfo: PagingInfo(
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direction:PagingDirection.FORWARD,
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pageSize: pageSize
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)
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)
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for msg in msgList:
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let index = Index.compute(
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msg,
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receivedTime = getNanosecondTime(getTime().toUnixFloat()),
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pubsubTopic = DefaultTopic
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)
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# check for duplicate messages
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# TODO Should take pubsub topic into account if we are going to support topics rather than the DefaultTopic
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if ws.messages.contains(index):
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dismissed = dismissed + 1
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continue
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# store the new message
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let indexedWakuMsg = IndexedWakuMessage(msg: msg, index: index, pubsubTopic: DefaultTopic)
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# store in db if exists
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if not ws.store.isNil:
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let res = ws.store.put(index, msg, DefaultTopic)
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if res.isErr:
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trace "failed to store messages", err = res.error
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waku_store_errors.inc(labelValues = ["store_failure"])
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continue
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discard ws.messages.add(indexedWakuMsg)
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added = added + 1
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waku_store_messages.set(ws.messages.len.int64, labelValues = ["stored"])
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debug "number of duplicate messages found in resume", dismissed=dismissed
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debug "number of messages added via resume", added=added
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if peerList.isSome:
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var res: WakuStoreResult[seq[WakuMessage]]
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if peerList.isSome():
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debug "trying the candidate list to fetch the history"
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let successResult = await ws.queryLoop(rpc, peerList.get())
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if successResult.isErr:
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debug "failed to resume the history from the list of candidates"
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return err("failed to resume the history from the list of candidates")
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debug "resume is done successfully"
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save(successResult.value)
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return ok(added)
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res = await w.queryLoop(req, peerList.get())
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else:
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debug "no candidate list is provided, selecting a random peer"
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# if no peerList is set then query from one of the peers stored in the peer manager
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let peerOpt = ws.peerManager.selectPeer(WakuStoreCodec)
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let peerOpt = w.peerManager.selectPeer(WakuStoreCodec)
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if peerOpt.isNone():
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warn "no suitable remote peers"
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waku_store_errors.inc(labelValues = [peerNotFoundFailure])
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return err("no suitable remote peers")
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debug "a peer is selected from peer manager"
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let remotePeerInfo = peerOpt.get()
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let successResult = await ws.queryFromWithPaging(rpc, remotePeerInfo)
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if successResult.isErr:
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debug "failed to resume the history"
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return err("failed to resume the history")
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debug "resume is done successfully"
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save(successResult.value)
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return ok(added)
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res = await w.queryFromWithPaging(req, peerOpt.get())
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if res.isErr():
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debug "failed to resume the history"
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return err("failed to resume the history")
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# Save the retrieved messages in the store
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var dismissed: uint = 0
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var added: uint = 0
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for msg in res.get():
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let index = Index.compute(
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msg,
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receivedTime = getNanosecondTime(getTime().toUnixFloat()),
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pubsubTopic = pubsubTopic
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)
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# check for duplicate messages
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# TODO: Should take pubsub topic into account if we are going to support topics rather than the DefaultTopic
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if w.messages.contains(index):
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dismissed.inc()
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continue
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# store the new message
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let resPut = w.messages.put(index, msg, pubsubTopic)
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if resPut.isErr():
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trace "failed to store messages", err = resPut.error()
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waku_store_errors.inc(labelValues = [storeFailure])
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continue
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# store in db if exists
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if not w.store.isNil():
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let resPut = w.store.put(index, msg, pubsubTopic)
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if resPut.isErr():
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trace "failed to store messages", err = resPut.error()
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waku_store_errors.inc(labelValues = [storeFailure])
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continue
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added.inc()
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waku_store_messages.set(w.messages.len.int64, labelValues = ["stored"])
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debug "resume finished successfully", addedMessages=added, dimissedMessages=dismissed
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return ok(added)
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## EXPERIMENTAL
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# NOTE: Experimental, maybe incorporate as part of query call
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proc queryWithAccounting*(ws: WakuStore, query: HistoryQuery, handler: QueryHandlerFunc) {.async, gcsafe.} =
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# @TODO We need to be more stratigic about which peers we dial. Right now we just set one on the service.
|
||||
proc queryWithAccounting*(ws: WakuStore, req: HistoryQuery): Future[WakuStoreResult[HistoryResponse]] {.async, gcsafe.} =
|
||||
let peerOpt = ws.peerManager.selectPeer(WakuStoreCodec)
|
||||
if peerOpt.isNone():
|
||||
error "no suitable remote peers"
|
||||
waku_store_errors.inc(labelValues = [peerNotFoundFailure])
|
||||
return err(peerNotFoundFailure)
|
||||
|
||||
let res = await ws.query(req, peerOpt.get())
|
||||
if res.isErr():
|
||||
return err(res.error())
|
||||
|
||||
let response = res.get()
|
||||
|
||||
# Perform accounting operation. Assumes wakuSwap protocol is mounted
|
||||
ws.wakuSwap.debit(peerOpt.get().peerId, response.messages.len)
|
||||
|
||||
return ok(response)
|
||||
|
||||
proc queryWithAccounting*(ws: WakuStore, req: HistoryQuery, handler: QueryHandlerFunc) {.async, gcsafe,
|
||||
deprecated: "Use the no-callback procedure instead".} =
|
||||
# TODO: We need to be more stratigic about which peers we dial. Right now we just set one on the service.
|
||||
# Ideally depending on the query and our set of peers we take a subset of ideal peers.
|
||||
# This will require us to check for various factors such as:
|
||||
# - which topics they track
|
||||
# - latency?
|
||||
# - default store peer?
|
||||
|
||||
let peerOpt = ws.peerManager.selectPeer(WakuStoreCodec)
|
||||
|
||||
if peerOpt.isNone():
|
||||
error "no suitable remote peers"
|
||||
waku_store_errors.inc(labelValues = [peerNotFoundFailure])
|
||||
let response = await ws.queryWithAccounting(req)
|
||||
if response.isErr():
|
||||
error "history query failed", error=response.error()
|
||||
return
|
||||
|
||||
let connOpt = await ws.peerManager.dialPeer(peerOpt.get(), WakuStoreCodec)
|
||||
|
||||
if connOpt.isNone():
|
||||
# @TODO more sophisticated error handling here
|
||||
error "failed to connect to remote peer"
|
||||
waku_store_errors.inc(labelValues = [dialFailure])
|
||||
return
|
||||
|
||||
await connOpt.get().writeLP(HistoryRPC(requestId: generateRequestId(ws.rng),
|
||||
query: query).encode().buffer)
|
||||
|
||||
var message = await connOpt.get().readLp(MaxRpcSize.int)
|
||||
let response = HistoryRPC.init(message)
|
||||
|
||||
if response.isErr:
|
||||
error "failed to decode response"
|
||||
waku_store_errors.inc(labelValues = [decodeRpcFailure])
|
||||
return
|
||||
|
||||
# NOTE Perform accounting operation
|
||||
# Assumes wakuSwap protocol is mounted
|
||||
let remotePeerInfo = peerOpt.get()
|
||||
let messages = response.value.response.messages
|
||||
ws.wakuSwap.debit(remotePeerInfo.peerId, messages.len)
|
||||
|
||||
waku_store_messages.set(response.value.response.messages.len.int64, labelValues = ["retrieved"])
|
||||
|
||||
handler(response.value.response)
|
||||
|
||||
handler(response.get())
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user