feat: Add missed blocks metric

.gitignore

@@ -1,13 +1,16 @@
-# If you prefer the allow list template instead of the deny list, see community template:
-# https://github.com/github/gitignore/blob/main/community/Golang/Go.AllowList.gitignore
-#
 # Binaries for programs and plugins
 *.exe
 *.exe~
 *.dll
 *.so
 *.dylib
 
+# vscode
+.vscode
+
+# direnv
+.envrc
+
 # Test binary, built with `go test -c`
 *.test
 
@@ -19,3 +22,6 @@
 
 # Go workspace file
 go.work
+
+/dist
+/build

.golangci.yaml

@@ -0,0 +1,54 @@
+---
+output:
+  sort-results: true
+
+linters:
+  enable:
+    - depguard
+    - gocritic
+    - gofumpt
+    - goimports
+    - revive
+    - misspell
+    - unconvert
+    - unused
+    - wsl
+
+issues:
+  max-same-issues: 0
+  exclude-rules:
+    - linters:
+        - gocritic
+      text: "appendAssign"
+    - path: _test.go
+      linters:
+        - errcheck
+
+linters-settings:
+  depguard:
+    rules:
+      main:
+        files:
+          - $all
+        deny:
+          - pkg: "github.com/sirupsen/logrus"
+            desc: Not allowed
+          - pkg: "github.com/pkg/errors"
+            desc: Should be replaced by standard lib errors package
+          - pkg: "sync/atomic"
+            desc: Use go.uber.org/atomic instead of sync/atomic
+          - pkg: "io/ioutil"
+            desc: Use corresponding 'os' or 'io' functions instead.
+  errcheck:
+    exclude-functions:
+      # Don't flag lines such as "io.Copy(io.Discard, resp.Body)".
+      - io.Copy
+      # The next two are used in HTTP handlers, any error is handled by the server itself.
+      - io.WriteString
+      - (net/http.ResponseWriter).Write
+      # No need to check for errors on server's shutdown.
+      - (*net/http.Server).Shutdown
+  goimports:
+    local-prefixes: github.com/prometheus/prometheus
+  gofumpt:
+    extra-rules: true

Makefile

@@ -0,0 +1,78 @@
+BUILD_FOLDER = build
+DIST_FOLDER = dist
+GORELEASER_VERSION = v1.21.0
+DOCKER := $(shell which docker)
+PACKAGE_NAME = github.com/archway-network/validator-exporter
+
+.PHONY: all
+all: install
+
+.PHONY: install
+install: go.sum
+	go install cmd/validator-exporter/main.go
+
+.PHONY: go.sum
+go.sum:
+	@echo "--> Ensure dependencies have not been modified"
+	@go mod verify
+
+go-mod-cache: go.sum
+	@echo "--> Download go modules to local cache"
+	@go mod download
+
+.PHONY: build
+build: go.sum
+	go build -o build/validator-exporter ./cmd/validator-exporter/main.go
+
+.PHONY: clean
+clean:
+	rm -rf $(BUILD_FOLDER)
+	rm -rf $(DIST_FOLDER)
+
+.PHONY: test
+test:
+	go test -race ./...
+
+.PHONY: text-cover
+test-cover:
+	go test -race ./... -coverprofile=coverage.out
+	go tool cover -html=coverage.out
+	rm coverage.out
+
+.PHONY: test-ci
+test-ci:
+	@go get ./...
+	@go test ./...
+
+.PHONY: lint
+lint:
+	@golangci-lint run
+	@go mod verify
+
+.PHONY: update
+update:
+	go get -u -d ./...
+	@go mod tidy
+	@go build -o "$(TMPDIR)/validator-exporter" cmd/validator-exporter/main.go
+	@git diff -- go.mod go.sum
+
+# release-dryrun:
+#		$(DOCKER) run \
+#			--rm \
+#			-v /var/run/docker.sock:/var/run/docker.sock \
+#			-v `pwd`:/go/src/$(PACKAGE_NAME) \
+#			-w /go/src/$(PACKAGE_NAME) \
+#			goreleaser/goreleaser-cross:$(GORELEASER_VERSION) \
+#			--skip-publish \
+#			--clean \
+#			--skip-validate
+
+# release:
+#		$(DOCKER) run \
+#			--rm \
+#			-e GITHUB_TOKEN="$(GITHUB_TOKEN)" \
+#			-v /var/run/docker.sock:/var/run/docker.sock \
+#			-v `pwd`:/go/src/$(PACKAGE_NAME) \
+#			-w /go/src/$(PACKAGE_NAME) \
+#			goreleaser/goreleaser-cross:$(GORELEASER_VERSION) \
+#			--clean

cmd/validator-exporter/main.go

@@ -0,0 +1,47 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"net/http"
+
+	"github.com/caarlos0/env/v10"
+	"github.com/prometheus/client_golang/prometheus"
+	"github.com/prometheus/client_golang/prometheus/promhttp"
+
+	"github.com/archway-network/validator-exporter/pkg/collector"
+	"github.com/archway-network/validator-exporter/pkg/config"
+	"github.com/archway-network/validator-exporter/pkg/grpc"
+	log "github.com/archway-network/validator-exporter/pkg/logger"
+)
+
+func main() {
+	port := flag.Int("p", 8008, "Server port")
+	logLevel := log.LevelFlag()
+
+	flag.Parse()
+
+	log.SetLevel(*logLevel)
+
+	cfg := config.Config{}
+	if err := env.Parse(&cfg); err != nil {
+		log.Fatal(err.Error())
+	}
+
+	_, err := grpc.LatestBlockHeight(cfg)
+	if err != nil {
+		log.Fatal(err.Error())
+	}
+
+	valsCollector := collector.ValidatorsCollector{
+		Cfg: cfg,
+	}
+
+	prometheus.MustRegister(valsCollector)
+
+	http.Handle("/metrics", promhttp.Handler())
+
+	addr := fmt.Sprintf(":%d", *port)
+	log.Info(fmt.Sprintf("Starting server on addr: %s", addr))
+	log.Fatal(http.ListenAndServe(addr, nil).Error())
+}

go.mod

@@ -0,0 +1,153 @@
+module github.com/archway-network/validator-exporter
+
+go 1.21.5
+
+require (
+	cosmossdk.io/api v0.7.2
+	github.com/caarlos0/env/v10 v10.0.0
+	github.com/cosmos/cosmos-sdk v0.50.2
+	github.com/prometheus/client_golang v1.17.0
+	go.uber.org/zap v1.26.0
+	google.golang.org/grpc v1.60.0
+)
+
+require (
+	cosmossdk.io/collections v0.4.0 // indirect
+	cosmossdk.io/core v0.11.0 // indirect
+	cosmossdk.io/depinject v1.0.0-alpha.4 // indirect
+	cosmossdk.io/errors v1.0.0 // indirect
+	cosmossdk.io/log v1.2.1 // indirect
+	cosmossdk.io/math v1.2.0 // indirect
+	cosmossdk.io/store v1.0.1 // indirect
+	cosmossdk.io/x/tx v0.12.0 // indirect
+	filippo.io/edwards25519 v1.0.0 // indirect
+	github.com/99designs/go-keychain v0.0.0-20191008050251-8e49817e8af4 // indirect
+	github.com/99designs/keyring v1.2.1 // indirect
+	github.com/DataDog/datadog-go v3.2.0+incompatible // indirect
+	github.com/DataDog/zstd v1.5.5 // indirect
+	github.com/beorn7/perks v1.0.1 // indirect
+	github.com/bgentry/speakeasy v0.1.1-0.20220910012023-760eaf8b6816 // indirect
+	github.com/btcsuite/btcd/btcec/v2 v2.3.2 // indirect
+	github.com/cenkalti/backoff/v4 v4.1.3 // indirect
+	github.com/cespare/xxhash v1.1.0 // indirect
+	github.com/cespare/xxhash/v2 v2.2.0 // indirect
+	github.com/cockroachdb/errors v1.11.1 // indirect
+	github.com/cockroachdb/logtags v0.0.0-20230118201751-21c54148d20b // indirect
+	github.com/cockroachdb/pebble v0.0.0-20231101195458-481da04154d6 // indirect
+	github.com/cockroachdb/redact v1.1.5 // indirect
+	github.com/cockroachdb/tokenbucket v0.0.0-20230807174530-cc333fc44b06 // indirect
+	github.com/cometbft/cometbft v0.38.2 // indirect
+	github.com/cometbft/cometbft-db v0.9.1 // indirect
+	github.com/cosmos/btcutil v1.0.5 // indirect
+	github.com/cosmos/cosmos-db v1.0.0 // indirect
+	github.com/cosmos/cosmos-proto v1.0.0-beta.3 // indirect
+	github.com/cosmos/go-bip39 v1.0.0 // indirect
+	github.com/cosmos/gogogateway v1.2.0 // indirect
+	github.com/cosmos/gogoproto v1.4.11 // indirect
+	github.com/cosmos/iavl v1.0.0 // indirect
+	github.com/cosmos/ics23/go v0.10.0 // indirect
+	github.com/cosmos/ledger-cosmos-go v0.13.3 // indirect
+	github.com/danieljoos/wincred v1.1.2 // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/decred/dcrd/dcrec/secp256k1/v4 v4.2.0 // indirect
+	github.com/desertbit/timer v0.0.0-20180107155436-c41aec40b27f // indirect
+	github.com/dgraph-io/badger/v2 v2.2007.4 // indirect
+	github.com/dgraph-io/ristretto v0.1.1 // indirect
+	github.com/dgryski/go-farm v0.0.0-20200201041132-a6ae2369ad13 // indirect
+	github.com/dustin/go-humanize v1.0.1 // indirect
+	github.com/dvsekhvalnov/jose2go v1.5.0 // indirect
+	github.com/emicklei/dot v1.6.0 // indirect
+	github.com/fatih/color v1.15.0 // indirect
+	github.com/felixge/httpsnoop v1.0.2 // indirect
+	github.com/fsnotify/fsnotify v1.6.0 // indirect
+	github.com/getsentry/sentry-go v0.25.0 // indirect
+	github.com/go-kit/kit v0.12.0 // indirect
+	github.com/go-kit/log v0.2.1 // indirect
+	github.com/go-logfmt/logfmt v0.6.0 // indirect
+	github.com/godbus/dbus v0.0.0-20190726142602-4481cbc300e2 // indirect
+	github.com/gogo/googleapis v1.4.1 // indirect
+	github.com/gogo/protobuf v1.3.2 // indirect
+	github.com/golang/glog v1.2.0 // indirect
+	github.com/golang/protobuf v1.5.3 // indirect
+	github.com/golang/snappy v0.0.4 // indirect
+	github.com/google/btree v1.1.2 // indirect
+	github.com/google/go-cmp v0.6.0 // indirect
+	github.com/gorilla/handlers v1.5.1 // indirect
+	github.com/gorilla/mux v1.8.0 // indirect
+	github.com/gorilla/websocket v1.5.0 // indirect
+	github.com/grpc-ecosystem/go-grpc-middleware v1.4.0 // indirect
+	github.com/grpc-ecosystem/grpc-gateway v1.16.0 // indirect
+	github.com/gsterjov/go-libsecret v0.0.0-20161001094733-a6f4afe4910c // indirect
+	github.com/hashicorp/go-hclog v1.5.0 // indirect
+	github.com/hashicorp/go-immutable-radix v1.3.1 // indirect
+	github.com/hashicorp/go-metrics v0.5.1 // indirect
+	github.com/hashicorp/go-plugin v1.5.2 // indirect
+	github.com/hashicorp/golang-lru v1.0.2 // indirect
+	github.com/hashicorp/hcl v1.0.0 // indirect
+	github.com/hashicorp/yamux v0.1.1 // indirect
+	github.com/hdevalence/ed25519consensus v0.1.0 // indirect
+	github.com/huandu/skiplist v1.2.0 // indirect
+	github.com/iancoleman/strcase v0.3.0 // indirect
+	github.com/improbable-eng/grpc-web v0.15.0 // indirect
+	github.com/inconshreveable/mousetrap v1.1.0 // indirect
+	github.com/jmhodges/levigo v1.0.0 // indirect
+	github.com/klauspost/compress v1.17.4 // indirect
+	github.com/kr/pretty v0.3.1 // indirect
+	github.com/kr/text v0.2.0 // indirect
+	github.com/libp2p/go-buffer-pool v0.1.0 // indirect
+	github.com/linxGnu/grocksdb v1.8.6 // indirect
+	github.com/magiconair/properties v1.8.7 // indirect
+	github.com/mattn/go-colorable v0.1.13 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/matttproud/golang_protobuf_extensions/v2 v2.0.0 // indirect
+	github.com/mitchellh/go-testing-interface v1.14.1 // indirect
+	github.com/mitchellh/mapstructure v1.5.0 // indirect
+	github.com/mtibben/percent v0.2.1 // indirect
+	github.com/oasisprotocol/curve25519-voi v0.0.0-20230904125328-1f23a7beb09a // indirect
+	github.com/oklog/run v1.1.0 // indirect
+	github.com/pelletier/go-toml/v2 v2.0.8 // indirect
+	github.com/petermattis/goid v0.0.0-20230904192822-1876fd5063bc // indirect
+	github.com/pkg/errors v0.9.1 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/prometheus/client_model v0.5.0 // indirect
+	github.com/prometheus/common v0.45.0 // indirect
+	github.com/prometheus/procfs v0.12.0 // indirect
+	github.com/rcrowley/go-metrics v0.0.0-20201227073835-cf1acfcdf475 // indirect
+	github.com/rogpeppe/go-internal v1.11.0 // indirect
+	github.com/rs/cors v1.8.3 // indirect
+	github.com/rs/zerolog v1.31.0 // indirect
+	github.com/sasha-s/go-deadlock v0.3.1 // indirect
+	github.com/spf13/afero v1.9.5 // indirect
+	github.com/spf13/cast v1.5.1 // indirect
+	github.com/spf13/cobra v1.7.0 // indirect
+	github.com/spf13/jwalterweatherman v1.1.0 // indirect
+	github.com/spf13/pflag v1.0.5 // indirect
+	github.com/spf13/viper v1.16.0 // indirect
+	github.com/stretchr/testify v1.8.4 // indirect
+	github.com/subosito/gotenv v1.4.2 // indirect
+	github.com/syndtr/goleveldb v1.0.1-0.20220721030215-126854af5e6d // indirect
+	github.com/tendermint/go-amino v0.16.0 // indirect
+	github.com/tidwall/btree v1.7.0 // indirect
+	github.com/zondax/hid v0.9.2 // indirect
+	github.com/zondax/ledger-go v0.14.3 // indirect
+	go.etcd.io/bbolt v1.3.8 // indirect
+	go.uber.org/multierr v1.11.0 // indirect
+	golang.org/x/crypto v0.16.0 // indirect
+	golang.org/x/exp v0.0.0-20231006140011-7918f672742d // indirect
+	golang.org/x/net v0.19.0 // indirect
+	golang.org/x/sync v0.4.0 // indirect
+	golang.org/x/sys v0.15.0 // indirect
+	golang.org/x/term v0.15.0 // indirect
+	golang.org/x/text v0.14.0 // indirect
+	google.golang.org/genproto v0.0.0-20231016165738-49dd2c1f3d0b // indirect
+	google.golang.org/genproto/googleapis/api v0.0.0-20231012201019-e917dd12ba7a // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20231030173426-d783a09b4405 // indirect
+	google.golang.org/protobuf v1.31.0 // indirect
+	gopkg.in/ini.v1 v1.67.0 // indirect
+	gopkg.in/yaml.v2 v2.4.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+	gotest.tools/v3 v3.5.1 // indirect
+	nhooyr.io/websocket v1.8.6 // indirect
+	pgregory.net/rapid v1.1.0 // indirect
+	sigs.k8s.io/yaml v1.3.0 // indirect
+)