maintenance: Bump lnd and lndclient versions, use dockerized linter and formatter, use Golang 1.18

.github/workflows/main.yml

@@ -16,7 +16,7 @@ env:
   # go needs absolute directories, using the $HOME variable doesn't work here.
   GOCACHE: /home/runner/work/go/pkg/build
   GOPATH: /home/runner/work/go
-  GO_VERSION: 1.16.8
+  GO_VERSION: 1.18.4
 
 jobs:
   ########################

.golangci.yml

@@ -0,0 +1,63 @@
+run:
+  # timeout for analysis
+  deadline: 10m
+
+linters-settings:
+  govet:
+    # Don't report about shadowed variables
+    check-shadowing: false
+  gofmt:
+    # simplify code: gofmt with `-s` option, true by default
+    simplify: true
+  whitespace:
+    multi-func: true
+    multi-if: true
+
+linters:
+  enable:
+    - gofmt
+    - whitespace
+    - asciicheck
+    - bidichk
+    - bodyclose
+    - deadcode
+    - decorder
+    - depguard
+    - dupl
+    - durationcheck
+    - errcheck
+    - errchkjson
+    - execinquery
+    - exportloopref
+    - goconst
+    - gocritic
+    - godot
+    - goheader
+    - goimports
+    - gomodguard
+    - goprintffuncname
+    - gosec
+    - gosimple
+    - govet
+    - grouper
+    - importas
+    - ineffassign
+    - makezero
+    - misspell
+    - nakedret
+    - nonamedreturns
+    - nosprintfhostport
+    - predeclared
+    - revive
+    - rowserrcheck
+    - sqlclosecheck
+    - staticcheck
+    - structcheck
+    - tagliatelle
+    - tenv
+    - typecheck
+    - unconvert
+    - unparam
+    - unused
+    - varcheck
+    - wastedassign

Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.14-alpine as builder
+FROM golang:1.18-alpine as builder
 
 # Install build dependencies such as git and glide.
 RUN apk add --no-cache git gcc musl-dev

Makefile

@@ -1,22 +1,22 @@
 PKG := github.com/lightninglabs/lndmon
 ESCPKG := github.com\/lightninglabs\/lndmon
+TOOLS_DIR := tools
 
 LINT_PKG := github.com/golangci/golangci-lint/cmd/golangci-lint
+GOIMPORTS_PKG := github.com/rinchsan/gosimports/cmd/gosimports
 
 GO_BIN := ${GOPATH}/bin
 LINT_BIN := $(GO_BIN)/golangci-lint
 
-LINT_COMMIT := v1.18.0
-
-DEPGET := cd /tmp && GO111MODULE=on go get -v
-GOBUILD := GO111MODULE=on go build -v
+GOBUILD := go build -v
 
 GOFILES_NOVENDOR = $(shell find . -type f -name '*.go' -not -path "./vendor/*")
 GOLIST := go list -deps $(PKG)/... | grep '$(PKG)'| grep -v '/vendor/'
 
 RM := rm -f
 CP := cp
 MAKE := make
+DOCKER_TOOLS = docker run -v $$(pwd):/build lndmon-tools
 
 LINT = $(LINT_BIN) run -v
 
@@ -28,9 +28,9 @@ all: lint build
 # DEPENDENCIES
 # ============
 
-$(LINT_BIN):
-	@$(call print, "Fetching linter")
-	$(DEPGET) $(LINT_PKG)@$(LINT_COMMIT)
+goimports:
+	@$(call print, "Installing goimports.")
+	cd $(TOOLS_DIR); go install -trimpath -tags=tools $(GOIMPORTS_PKG)
 
 # ============
 # INSTALLATION
@@ -43,13 +43,19 @@ build:
 # =========
 # UTILITIES
 # =========
-fmt:
+docker-tools:
+	@$(call print, "Building tools docker image.")
+	docker build -q -t lndmon-tools $(TOOLS_DIR)
+
+fmt: goimports
+	@$(call print, "Fixing imports.")
+	gosimports -w $(GOFILES_NOVENDOR)
 	@$(call print, "Formatting source.")
 	gofmt -l -w -s $(GOFILES_NOVENDOR)
 
-lint: $(LINT_BIN)
+lint: docker-tools
 	@$(call print, "Linting source.")
-	$(LINT)
+	$(DOCKER_TOOLS) golangci-lint run -v $(LINT_WORKERS)
 
 list:
 	@$(call print, "Listing commands.")

cmd/lndmon/main.go

@@ -2,7 +2,6 @@ package main
 
 import (
 	"github.com/lightninglabs/lndmon"
-
 	_ "github.com/lightninglabs/lndmon/collectors"
 )
 

collectors/channel_collector_test.go

@@ -3,7 +3,7 @@ package collectors
 import (
 	"testing"
 
-	"github.com/btcsuite/btcutil"
+	"github.com/btcsuite/btcd/btcutil"
 	"github.com/lightninglabs/lndclient"
 	"github.com/stretchr/testify/require"
 )

collectors/channels_collector.go

@@ -5,13 +5,13 @@ import (
 	"fmt"
 	"strconv"
 
-	"github.com/btcsuite/btcutil"
+	"github.com/btcsuite/btcd/btcutil"
 	"github.com/lightninglabs/lndclient"
 	"github.com/lightningnetwork/lnd/routing/route"
 	"github.com/prometheus/client_golang/prometheus"
 )
 
-// ChannelsCollector is a collector that keeps track of channel infromation.
+// ChannelsCollector is a collector that keeps track of channel information.
 type ChannelsCollector struct {
 	channelBalanceDesc        *prometheus.Desc
 	pendingChannelBalanceDesc *prometheus.Desc
@@ -279,7 +279,7 @@ func (c *ChannelsCollector) Collect(ch chan<- prometheus.Metric) {
 		initiator := initiatorLabel(channel)
 		peer := channel.PubKeyBytes.String()
 
-		chanIdStr := strconv.Itoa(int(channel.ChannelID))
+		chanIDStr := strconv.Itoa(int(channel.ChannelID))
 
 		primaryChannel := c.primaryNode != nil &&
 			channel.PubKeyBytes == *c.primaryNode
@@ -292,57 +292,57 @@ func (c *ChannelsCollector) Collect(ch chan<- prometheus.Metric) {
 
 		ch <- prometheus.MustNewConstMetric(
 			c.incomingChanSatDesc, prometheus.GaugeValue,
-			float64(channel.RemoteBalance), chanIdStr, status,
+			float64(channel.RemoteBalance), chanIDStr, status,
 			initiator, peer,
 		)
 		ch <- prometheus.MustNewConstMetric(
 			c.outgoingChanSatDesc, prometheus.GaugeValue,
-			float64(channel.LocalBalance), chanIdStr, status,
+			float64(channel.LocalBalance), chanIDStr, status,
 			initiator, peer,
 		)
 		ch <- prometheus.MustNewConstMetric(
 			c.numPendingHTLCsDesc, prometheus.GaugeValue,
-			float64(channel.NumPendingHtlcs), chanIdStr, status,
+			float64(channel.NumPendingHtlcs), chanIDStr, status,
 			initiator, peer,
 		)
 		ch <- prometheus.MustNewConstMetric(
 			c.satsSentDesc, prometheus.GaugeValue,
-			float64(channel.TotalSent), chanIdStr, status,
+			float64(channel.TotalSent), chanIDStr, status,
 			initiator, peer,
 		)
 		ch <- prometheus.MustNewConstMetric(
 			c.satsRecvDesc, prometheus.GaugeValue,
-			float64(channel.TotalReceived), chanIdStr, status,
+			float64(channel.TotalReceived), chanIDStr, status,
 			initiator, peer,
 		)
 		ch <- prometheus.MustNewConstMetric(
 			c.numUpdatesDesc, prometheus.GaugeValue,
-			float64(channel.NumUpdates), chanIdStr, status,
+			float64(channel.NumUpdates), chanIDStr, status,
 			initiator, peer,
 		)
 		ch <- prometheus.MustNewConstMetric(
 			c.csvDelayDesc, prometheus.GaugeValue,
-			float64(channel.LocalConstraints.CsvDelay), chanIdStr,
+			float64(channel.LocalConstraints.CsvDelay), chanIDStr,
 			status, initiator, peer,
 		)
 		ch <- prometheus.MustNewConstMetric(
 			c.unsettledBalanceDesc, prometheus.GaugeValue,
-			float64(channel.UnsettledBalance), chanIdStr, status,
+			float64(channel.UnsettledBalance), chanIDStr, status,
 			initiator, peer,
 		)
 		ch <- prometheus.MustNewConstMetric(
 			c.feePerKwDesc, prometheus.GaugeValue,
-			float64(channel.FeePerKw), chanIdStr, status, initiator,
+			float64(channel.FeePerKw), chanIDStr, status, initiator,
 			peer,
 		)
 		ch <- prometheus.MustNewConstMetric(
 			c.commitWeightDesc, prometheus.GaugeValue,
-			float64(channel.CommitWeight), chanIdStr, status,
+			float64(channel.CommitWeight), chanIDStr, status,
 			initiator, peer,
 		)
 		ch <- prometheus.MustNewConstMetric(
 			c.commitFeeDesc, prometheus.GaugeValue,
-			float64(channel.CommitFee), chanIdStr, status,
+			float64(channel.CommitFee), chanIDStr, status,
 			initiator, peer,
 		)
 
@@ -351,7 +351,7 @@ func (c *ChannelsCollector) Collect(ch chan<- prometheus.Metric) {
 			ch <- prometheus.MustNewConstMetric(
 				c.channelUptimeDesc, prometheus.GaugeValue,
 				float64(channel.Uptime)/float64(channel.LifeTime),
-				chanIdStr, status, initiator, peer,
+				chanIDStr, status, initiator, peer,
 			)
 		}
 	}

collectors/graph_collector.go

@@ -316,7 +316,7 @@ func (g *GraphCollector) Collect(ch chan<- prometheus.Metric) {
 
 	ch <- prometheus.MustNewConstMetric(
 		g.avgOutDegreeDesc, prometheus.GaugeValue,
-		float64(networkInfo.AvgOutDegree),
+		networkInfo.AvgOutDegree,
 	)
 	ch <- prometheus.MustNewConstMetric(
 		g.maxOutDegreeDesc, prometheus.GaugeValue,

collectors/log.go

@@ -25,15 +25,15 @@ var (
 // initLogRotator initializes the logging rotator to write logs to logFile and
 // create roll files in the same directory.  It must be called before the
 // package-global log rotator variables are used.
-func initLogRotator(logFile string, MaxLogFileSize int, MaxLogFiles int) error {
+func initLogRotator(logFile string, maxLogFileSize int, maxLogFiles int) error {
 	logDir, _ := filepath.Split(logFile)
 	err := os.MkdirAll(logDir, 0700)
 	if err != nil {
 		return fmt.Errorf("failed to create log directory: %v", err)
 	}
 
 	r, err := rotator.New(
-		logFile, int64(MaxLogFileSize*1024), false, MaxLogFiles,
+		logFile, int64(maxLogFileSize*1024), false, maxLogFiles,
 	)
 	if err != nil {
 		return fmt.Errorf("failed to create file rotator: %v", err)

collectors/prometheus.go

@@ -7,7 +7,7 @@ import (
 	"os"
 	"path/filepath"
 
-	"github.com/btcsuite/btcutil"
+	"github.com/btcsuite/btcd/btcutil"
 	"github.com/lightninglabs/lndclient"
 	"github.com/lightningnetwork/lnd/routing/route"
 	"github.com/prometheus/client_golang/prometheus"

collectors/stats_compiler.go

@@ -39,7 +39,6 @@ func newStatsCompiler(numSamples uint32) statsCompiler {
 
 // Observe logs a new value in the set of existing samples.
 func (s *statsCompiler) Observe(value float64) {
-
 	// First, we'll update our min/max, if needed.
 	if value > s.max {
 		s.max = value

collectors/wallet_collector.go

@@ -5,7 +5,7 @@ import (
 	"fmt"
 	"math"
 
-	"github.com/btcsuite/btcutil"
+	"github.com/btcsuite/btcd/btcutil"
 	"github.com/lightninglabs/lndclient"
 	"github.com/prometheus/client_golang/prometheus"
 )
@@ -164,7 +164,7 @@ func (u *WalletCollector) Collect(ch chan<- prometheus.Metric) {
 	)
 
 	ch <- prometheus.MustNewConstMetric(
-		u.avgUtxoSizeDesc, prometheus.GaugeValue, float64(avg),
+		u.avgUtxoSizeDesc, prometheus.GaugeValue, avg,
 	)
 
 	// Next, we'll query the wallet to determine our confirmed and unconf

config.go

@@ -1,7 +1,7 @@
 package lndmon
 
 import (
-	"github.com/btcsuite/btcutil"
+	"github.com/btcsuite/btcd/btcutil"
 	"github.com/lightninglabs/lndmon/collectors"
 )