feat(c-bindings): rln relay (#2544)

library/waku_thread/config.nim

@@ -1,11 +1,13 @@
 import std/[json, strformat, options]
+import std/sequtils
 import
   libp2p/crypto/crypto,
   libp2p/crypto/secp,
   stew/shims/net,
   ../../waku/waku_enr/capabilities,
   ../../waku/common/utils/nat,
   ../../waku/factory/external_config,
+  ../../waku/waku_core/message/default_values,
   ../../waku/node/waku_node,
   ../../waku/node/config,
   ../events/json_base_event
@@ -82,6 +84,20 @@ proc parseRelay(jsonNode: JsonNode, conf: var WakuNodeConf, errorResp: var strin
 
   return true
 
+proc parseClusterId(jsonNode: JsonNode, conf: var WakuNodeConf, errorResp: var string): bool =
+  if not jsonNode.contains("relay"):
+    errorResp = "relay attribute is required"
+    return false
+
+  if jsonNode.contains("clusterId"):
+    if jsonNode["clusterId"].kind != JsonNodeKind.JInt:
+      errorResp = "The clusterId config param should be an int"
+      return false
+    else:
+      conf.clusterId = uint32(jsonNode["clusterId"].getInt())
+
+  return true
+
 proc parseStore(
     jsonNode: JsonNode,
     conf: var WakuNodeConf,
@@ -149,6 +165,29 @@ proc parseTopics(jsonNode: JsonNode, conf: var WakuNodeConf) =
   else:
     conf.pubsubTopics = @["/waku/2/default-waku/proto"]
 
+proc parseRLNRelay(jsonNode: JsonNode, conf: var WakuNodeConf, errorResp: var string): bool =
+  if not jsonNode.contains("rln-relay"):
+    return true
+
+  let jsonNode = jsonNode["rln-relay"]
+  if not jsonNode.contains("enabled"):
+    errorResp = "rlnRelay.enabled attribute is required"
+    return false
+
+  conf.rlnRelay = jsonNode["enabled"].getBool()
+  conf.rlnRelayCredPath = jsonNode{"cred-password"}.getStr()
+  conf.rlnRelayEthClientAddress = EthRpcUrl.parseCmdArg(jsonNode{"eth-client-address"}.getStr("http://localhost:8540"))
+  conf.rlnRelayEthContractAddress = jsonNode{"eth-contract-address"}.getStr()
+  conf.rlnRelayCredPassword = jsonNode{"cred-password"}.getStr()
+  conf.rlnRelayUserMessageLimit = uint64(jsonNode{"user-message-limit"}.getInt(1))
+  conf.rlnEpochSizeSec = uint64(jsonNode{"epoch-sec"}.getInt(1))
+  conf.rlnRelayCredIndex = some(uint(jsonNode{"membership-index"}.getInt()))
+  conf.rlnRelayDynamic = jsonNode{"dynamic"}.getBool()
+  conf.rlnRelayTreePath = jsonNode{"tree-path"}.getStr()
+  conf.rlnRelayBandwidthThreshold = jsonNode{"bandwidth-threshold"}.getInt()
+
+  return true
+
 proc parseConfig*(
     configNodeJson: string,
     conf: var WakuNodeConf,
@@ -199,6 +238,14 @@ proc parseConfig*(
     errorResp = "Exception calling parseRelay: " & getCurrentExceptionMsg()
     return false
 
+  # clusterId
+  try:
+    if not parseClusterId(jsonNode, conf, errorResp):
+      return false
+  except Exception, KeyError:
+    errorResp = "Exception calling parseClusterId: " & getCurrentExceptionMsg()
+    return false
+
   # topics
   try:
     parseTopics(jsonNode, conf)
@@ -214,4 +261,12 @@ proc parseConfig*(
     errorResp = "Exception calling parseStore: " & getCurrentExceptionMsg()
     return false
 
+  # rln
+  try:
+    if not parseRLNRelay(jsonNode, conf, errorResp):
+      return false
+  except Exception, KeyError:
+    errorResp = "Exception calling parseRLNRelay: " & getCurrentExceptionMsg()
+    return false
+
   return true

library/waku_thread/inter_thread_communication/requests/node_lifecycle_request.nim

@@ -63,11 +63,32 @@ proc createNode(configJson: cstring): Future[Result[WakuNode, string]] {.async.}
     return err("exception calling parseConfig: " & getCurrentExceptionMsg())
 
   # TODO: figure out how to extract default values from the config pragma
-  conf.clusterId = 0
   conf.nat = "any"
   conf.maxConnections = 50.uint16
   conf.maxMessageSize = default_values.DefaultMaxWakuMessageSizeStr
 
+  # The Waku Network config (cluster-id=1)
+  if conf.clusterId == 1:
+    let twnClusterConf = ClusterConf.TheWakuNetworkConf()
+    if len(conf.shards) != 0:
+      conf.pubsubTopics = conf.shards.mapIt(twnClusterConf.pubsubTopics[it.uint16])
+    else:
+      conf.pubsubTopics = twnClusterConf.pubsubTopics
+
+    # Override configuration
+    conf.maxMessageSize = twnClusterConf.maxMessageSize
+    conf.clusterId = twnClusterConf.clusterId
+    conf.rlnRelay = twnClusterConf.rlnRelay
+    conf.rlnRelayEthContractAddress = twnClusterConf.rlnRelayEthContractAddress
+    conf.rlnRelayDynamic = twnClusterConf.rlnRelayDynamic
+    conf.rlnRelayBandwidthThreshold = twnClusterConf.rlnRelayBandwidthThreshold
+    conf.discv5Discovery = twnClusterConf.discv5Discovery
+    conf.discv5BootstrapNodes =
+      conf.discv5BootstrapNodes & twnClusterConf.discv5BootstrapNodes
+    conf.rlnEpochSizeSec = twnClusterConf.rlnEpochSizeSec
+    conf.rlnRelayUserMessageLimit = twnClusterConf.rlnRelayUserMessageLimit
+
+
   let nodeRes = setupNode(conf).valueOr():
     error "Failed setting up node", error = error
     return err("Failed setting up node: " & $error)

waku/factory/external_config.nim

@@ -31,7 +31,7 @@ type ProtectedTopic* = object
 
 type ShardIdx = distinct uint16
 
-type EthRpcUrl = distinct string
+type EthRpcUrl* = distinct string
 
 type StartUpCommand* = enum
   noCommand # default, runs waku