metrics: enable during import (#2401)

This allows monitoring the import process using prometheus/grafana/etc

nimbus/config.nim

@@ -258,6 +258,23 @@ type
       defaultValue: 10
       name: "log-metrics-interval" .}: int
 
+    metricsEnabled* {.
+      desc: "Enable the built-in metrics HTTP server"
+      defaultValue: false
+      name: "metrics" }: bool
+
+    metricsPort* {.
+      desc: "Listening port of the built-in metrics HTTP server"
+      defaultValue: defaultMetricsServerPort
+      defaultValueDesc: $defaultMetricsServerPort
+      name: "metrics-port" }: Port
+
+    metricsAddress* {.
+      desc: "Listening IP address of the built-in metrics HTTP server"
+      defaultValue: defaultAdminListenAddress
+      defaultValueDesc: $defaultAdminListenAddressDesc
+      name: "metrics-address" }: IpAddress
+
     bootstrapNodes {.
       separator: "\pNETWORKING OPTIONS:"
       desc: "Specifies one or more bootstrap nodes(as enode URL) to use when connecting to the network"
@@ -478,23 +495,6 @@ type
         defaultValueDesc: "\"jwt.hex\" in the data directory (see --data-dir)"
         name: "jwt-secret" .}: Option[InputFile]
 
-      metricsEnabled* {.
-        desc: "Enable the built-in metrics HTTP server"
-        defaultValue: false
-        name: "metrics" }: bool
-
-      metricsPort* {.
-        desc: "Listening port of the built-in metrics HTTP server"
-        defaultValue: defaultMetricsServerPort
-        defaultValueDesc: $defaultMetricsServerPort
-        name: "metrics-port" }: Port
-
-      metricsAddress* {.
-        desc: "Listening IP address of the built-in metrics HTTP server"
-        defaultValue: defaultAdminListenAddress
-        defaultValueDesc: $defaultAdminListenAddressDesc
-        name: "metrics-address" }: IpAddress
-
     of `import`:
       blocksFile* {.
         argument

nimbus/nimbus.nim

@@ -174,8 +174,7 @@ proc setupP2P(nimbus: NimbusNode, conf: NimbusConf,
       waitForPeers = waitForPeers)
 
 
-proc localServices(nimbus: NimbusNode, conf: NimbusConf,
+proc setupMetrics(nimbus: NimbusNode, conf: NimbusConf) =
-                   com: CommonRef, protocols: set[ProtocolFlag]) =
   # metrics logging
   if conf.logMetricsEnabled:
     # https://github.com/nim-lang/Nim/issues/17369
@@ -187,8 +186,6 @@ proc localServices(nimbus: NimbusNode, conf: NimbusConf,
       discard setTimer(Moment.fromNow(conf.logMetricsInterval.seconds), logMetrics)
     discard setTimer(Moment.fromNow(conf.logMetricsInterval.seconds), logMetrics)
 
-  nimbus.setupRpc(conf, com, protocols)
-
   # metrics server
   if conf.metricsEnabled:
     info "Starting metrics HTTP server", address = conf.metricsAddress, port = conf.metricsPort
@@ -235,6 +232,8 @@ proc run(nimbus: NimbusNode, conf: NimbusConf) =
     of Aristo,AriPrune:
       AristoDbRocks.newCoreDbRef(string conf.dataDir, conf.dbOptions())
 
+  setupMetrics(nimbus, conf)
+
   let com = CommonRef.new(
     db = coreDB,
     pruneHistory = (conf.chainDbMode == AriPrune),
@@ -255,7 +254,7 @@ proc run(nimbus: NimbusNode, conf: NimbusConf) =
     basicServices(nimbus, conf, com)
     manageAccounts(nimbus, conf)
     setupP2P(nimbus, conf, com, protocols)
-    localServices(nimbus, conf, com, protocols)
+    setupRpc(nimbus, conf, com, protocols)
 
     if conf.maxPeers > 0:
       case conf.syncMode:

nimbus/nimbus_import.nim

@@ -11,6 +11,7 @@
 
 import
   chronicles,
+  metrics,
   chronos/timer,
   std/[strformat, strutils],
   stew/io2,
@@ -20,6 +21,15 @@ import
   ./db/era1_db,
   beacon_chain/era_db
 
+declareCounter nec_imported_blocks,
+  "Blocks processed during import"
+
+declareCounter nec_imported_transactions,
+  "Transactions processed during import"
+
+declareCounter nec_imported_gas,
+  "Gas processed during import"
+
 var running {.volatile.} = true
 
 func shortLog(a: timer.Duration, parts = int.high): string {.inline.} =
@@ -145,6 +155,10 @@ proc importBlocks*(conf: NimbusConf, com: CommonRef) =
           avgMGps = f(gas.float / 1000000 / diff0),
           elapsed = shortLog(time2 - time0, 3)
 
+        nec_imported_blocks.inc(blocks.len)
+        nec_imported_transactions.inc(statsRes[].txs)
+        nec_imported_gas.inc(statsRes[].gas)
+
         if csv != nil:
           # In the CSV, we store a line for every chunk of blocks processed so
           # that the file can meaningfully be appended to when restarting the