nwaku/waku/v2/node/jsonrpc/store_api.nim
Sanaz Taheri Boshrooyeh fb2ea06a4f
Update store protocol interface: add history content filter (#488)
* replaces topics with seq of ContentFilters

* update topics to contentFilter

* updates the contentFilter  structure

 one content  topic per content filter instead of a sequence of topics

* updates store json rpc api

* renames ContentFilter to HistoryContentFilter

* unit test for a query with several content filters

* makes shortcut for store api

* updates chat2

* clean up

* renames topic to contentTopic

* clarifies the use of content topic in store api

* clarifies the use of contentTopic in the init method of HistoryContentFilter
2021-04-19 10:38:30 -07:00

45 lines
1.6 KiB
Nim

{.push raises: [Exception, Defect].}
import
std/options,
json_rpc/rpcserver,
../../protocol/waku_store/waku_store_types,
../wakunode2,
./jsonrpc_types, ./jsonrpc_utils
export jsonrpc_types
logScope:
topics = "store api"
proc installStoreApiHandlers*(node: WakuNode, rpcsrv: RpcServer) =
const futTimeout = 5.seconds
## Store API version 1 definitions
rpcsrv.rpc("get_waku_v2_store_v1_messages") do(contentTopics: seq[ContentTopic], pagingOptions: Option[StorePagingOptions]) -> StoreResponse:
## Returns history for a list of content topics with optional paging
debug "get_waku_v2_store_v1_messages"
var responseFut = newFuture[StoreResponse]()
proc queryFuncHandler(response: HistoryResponse) {.gcsafe, closure.} =
debug "get_waku_v2_store_v1_messages response"
responseFut.complete(response.toStoreResponse())
var contentFilters: seq[HistoryContentFilter] = @[]
# items in contentTopics map to the contentTopic field of waku message (not to be confused with pubsub topic)
for ct in contentTopics:
contentFilters.add(HistoryContentFilter(contentTopic: ct))
let historyQuery = HistoryQuery(contentFilters: contentFilters,
pagingInfo: if pagingOptions.isSome: pagingOptions.get.toPagingInfo() else: PagingInfo())
await node.query(historyQuery, queryFuncHandler)
if (await responseFut.withTimeout(futTimeout)):
# Future completed
return responseFut.read()
else:
# Future failed to complete
raise newException(ValueError, "No history response received")