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nim-codex-dht
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moving encode and decode to the same level

This commit is contained in:
Csaba Kiraly 2022-02-16 13:27:47 +01:00
parent 043f195e19
commit 6dcdaf6173
1 changed files with 15 additions and 13 deletions
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28
dht/providers.nim
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@ -24,11 +24,8 @@ proc addProviderLocal(p: ProvidersProtocol, cId: NodeId, prov: PeerRecord) =
trace "adding provider to local db", n=p.discovery.localNode, cId, prov
p.providers.mgetOrPut(cId, @[]).add(prov)
proc recvAddProvider(p: ProvidersProtocol, nodeId: NodeId, payload: openArray[byte])
proc recvAddProvider(p: ProvidersProtocol, nodeId: NodeId, msg: AddProviderMessage)
{.raises: [Defect].} =
#TODO: add checks, add signed version
let msg = AddProviderMessage.decode(payload).get()
trace "<<< add_provider ", src = nodeId, dst = p.discovery.localNode.id, cid = msg.cId, prov=msg.prov
p.addProviderLocal(msg.cId, msg.prov)
#TODO: check that CID is reasonably close to our NodeID
@ -38,7 +35,12 @@ const
proc registerAddProvider(p: ProvidersProtocol) =
proc handler(protocol: TalkProtocol, request: seq[byte], fromId: NodeId, fromUdpAddress: Address): seq[byte]
{.gcsafe, raises: [Defect].} =
recvAddProvider(p, fromId, request)
trace "<<< add_provider ", src = nodeId, dst = p.discovery.localNode.id, cid = msg.cId, prov=msg.prov
#TODO: add checks, add signed version
let msg = AddProviderMessage.decode(request).get()
recvAddProvider(p, fromId, msg)
@[] # talk requires a response
let protocol = TalkProtocol(protocolHandler: handler)
@ -122,25 +124,25 @@ proc getProviders*(
#
trace "getProviders collected: ", result
proc recvGetProviders(p: ProvidersProtocol, nodeId: NodeId, payload: openArray[byte]) : ProvidersMessage
proc recvGetProviders(p: ProvidersProtocol, nodeId: NodeId, msg: GetProvidersMessage) : ProvidersMessage
{.raises: [Defect].} =
trace "recvGetProviders"
let msg = GetProvidersMessage.decode(payload).get()
trace "<<< get_providers ", src = nodeId, dst = p.discovery.localNode.id, cid = msg.cId
#TODO: add checks, add signed version
let provs = p.providers.getOrDefault(msg.cId)
trace "providers:", provs
##TODO: handle multiple messages
ProvidersMessage(total: 1, provs: provs)
proc registerGetProviders(p: ProvidersProtocol) =
proc handler(protocol: TalkProtocol, request: seq[byte], fromId: NodeId, fromUdpAddress: Address): seq[byte]
{.gcsafe, raises: [Defect].} =
let returnMsg = recvGetProviders(p, fromId, request)
trace "<<< get_providers ", src = nodeId, dst = p.discovery.localNode.id, cid = msg.cId
let msg = GetProvidersMessage.decode(request).get()
let returnMsg = recvGetProviders(p, fromId, msg)
trace "returnMsg", returnMsg
returnMsg.encode() # TODO: response
returnMsg.encode()
let protocol = TalkProtocol(protocolHandler: handler)
discard p.discovery.registerTalkProtocol(protoIdGetProviders, protocol) #TODO: handle error