Implement https://github.com/status-im/nim-beacon-chain/issues/872

Please see the newly added 'schlesi-dev' Makefile target.
It demonstrates how the log level can be specified for individual topics.

Additionally, when connecting to testnets like 'schlesi' there will be
two additional log files produced in the working directory:

* json-log.txt
* text-log.txt (in the textblocks format)

Makefile

@@ -129,6 +129,9 @@ testnet0 testnet1: | build deps
 schlesi: | build deps
 	LOG_LEVEL="DEBUG" $(ENV_SCRIPT) nim $(NIM_PARAMS) scripts/connect_to_testnet.nims $(SCRIPT_PARAMS) shared/schlesi
 
+schlesi-dev: | build deps
+	LOG_LEVEL="DEBUG;TRACE:discv5,networking;REQUIRED:none" $(ENV_SCRIPT) nim $(NIM_PARAMS) scripts/connect_to_testnet.nims $(SCRIPT_PARAMS) shared/schlesi
+
 clean: | clean-common
 	rm -rf build/{$(TOOLS_CSV),all_tests,*_node,*ssz*,beacon_node_testnet*,state_sim,transition*}
 ifneq ($(USE_LIBBACKTRACE), 0)

beacon_chain/beacon_node.nim

@@ -7,11 +7,12 @@
 
 import
   # Standard library
-  os, tables, random, strutils, times,
+  os, tables, random, strutils, times, sequtils,
 
   # Nimble packages
   stew/[objects, bitseqs, byteutils], stew/shims/macros,
-  chronos, chronicles, confutils, metrics, json_rpc/[rpcserver, jsonmarshal],
+  chronos, confutils, metrics, json_rpc/[rpcserver, jsonmarshal],
+  chronicles, chronicles/helpers as chroniclesHelpers,
   json_serialization/std/[options, sets, net], serialization/errors,
   eth/db/kvstore, eth/db/kvstore_sqlite3,
   eth/p2p/enode, eth/[keys, async_utils], eth/p2p/discoveryv5/[protocol, enr],
@@ -1334,8 +1335,20 @@ programMain:
 
   randomize()
 
-  if config.logLevel != LogLevel.NONE:
+  try:
-    setLogLevel(config.logLevel)
+    let directives = config.logLevel.split(";")
+    try:
+      setLogLevel(parseEnum[LogLevel](directives[0]))
+    except CatchableError:
+      raise (ref ValueError)(msg: "Please specify one of TRACE, DEBUG, INFO, NOTICE, WARN, ERROR or FATAL")
+
+    if directives.len > 1:
+      for topicName, settings in parseTopicDirectives(directives[1..^1]):
+        if not setTopicState(topicName, settings.state, settings.logLevel):
+          warn "Unrecognized logging topic", topic = topicName
+  except CatchableError as err:
+    stderr.write "Invalid value for --log-level. " & err.msg
+    quit 1
 
   ## Ctrl+C handling
   proc controlCHandler() {.noconv.} =

beacon_chain/conf.nim

@@ -32,9 +32,9 @@ type
 
   BeaconNodeConf* = object
     logLevel* {.
-      defaultValue: LogLevel.DEBUG
+      defaultValue: "DEBUG"
       desc: "Sets the log level."
-      name: "log-level" }: LogLevel
+      name: "log-level" }: string
 
     eth1Network* {.
       defaultValue: goerli

beacon_chain/eth2_network.nim

@@ -684,6 +684,11 @@ proc dialPeer*(node: Eth2Node, peerInfo: PeerInfo) {.async.} =
   var peer = node.getPeer(peerInfo)
   peer.wasDialed = true
 
+  #let msDial = newMultistream()
+  #let conn = node.switch.connections.getOrDefault(peerInfo.id)
+  #let ls = await msDial.list(conn)
+  #debug "Supported protocols", ls
+
   debug "Initializing connection"
   await initializeConnection(peer)
 

scripts/connect_to_testnet.nims

@@ -107,7 +107,7 @@ cli do (skipGoerliKey {.
       rmDir dataDir
 
   cd rootDir
-  exec &"""nim c {nimFlags} -d:"const_preset={preset}" -o:"{beaconNodeBinary}" beacon_chain/beacon_node.nim"""
+  exec &"""nim c {nimFlags} -d:"const_preset={preset}" -d:"chronicles_sinks=textlines,json[file(json-log.txt)],textblocks[file(text-log.txt)]" -o:"{beaconNodeBinary}" beacon_chain/beacon_node.nim"""
 
   mkDir dumpDir
 
@@ -142,7 +142,7 @@ cli do (skipGoerliKey {.
   let logLevel = getEnv("LOG_LEVEL")
   var logLevelOpt = ""
   if logLevel.len > 0:
-    logLevelOpt = "--log-level=" & logLevel
+    logLevelOpt = &"""--log-level="{logLevel}" """
 
   mode = Verbose
   execIgnoringExitCode replace(&"""{beaconNodeBinary}

vendor/nim-chronicles

@@ -1 +1 @@
-Subproject commit 9c41783ba5b16e65f25b09d0e3dadae26dc56707
+Subproject commit 8be157d013be6cafe1ea4afcd5d4192c86fa0a3c