refactor: switch to vtprotobuf, remove legacy dependencies

 - switch to newer Golang protobuf package
 - remove gogo protobuf (deprecated)
 - use vtprotobuf (Vitess protobuf) instead of gogo
 - remove all prometheus_client references
 - remove Sirupsen references (namespace change)
 - fix recursive marshal in pquads

Signed-off-by: Christian Stewart <christian@paral.in>

Makefile

@@ -0,0 +1,103 @@
+PROTOWRAP=hack/bin/protowrap
+PROTOC_GEN_GO=hack/bin/protoc-gen-go
+PROTOC_GEN_VTPROTO=hack/bin/protoc-gen-go-vtproto
+GOIMPORTS=hack/bin/goimports
+GOLANGCI_LINT=hack/bin/golangci-lint
+GO_MOD_OUTDATED=hack/bin/go-mod-outdated
+GOLIST=go list -f "{{ .Dir }}" -m
+
+export GO111MODULE=on
+undefine GOARCH
+undefine GOOS
+
+all:
+
+vendor:
+	go mod vendor
+
+$(PROTOC_GEN_GO):
+	cd ./hack; \
+	go build -v \
+		-o ./bin/protoc-gen-go \
+		google.golang.org/protobuf/cmd/protoc-gen-go
+
+$(PROTOC_GEN_VTPROTO):
+	cd ./hack; \
+	go build -v \
+		-o ./bin/protoc-gen-go-vtproto \
+		github.com/planetscale/vtprotobuf/cmd/protoc-gen-go-vtproto
+
+$(GOIMPORTS):
+	cd ./hack; \
+	go build -v \
+		-o ./bin/goimports \
+		golang.org/x/tools/cmd/goimports
+
+$(PROTOWRAP):
+	cd ./hack; \
+	go build -v \
+		-o ./bin/protowrap \
+		github.com/aperturerobotics/goprotowrap/cmd/protowrap
+
+$(GOLANGCI_LINT):
+	cd ./hack; \
+	go build -v \
+		-o ./bin/golangci-lint \
+		github.com/golangci/golangci-lint/cmd/golangci-lint
+
+$(GO_MOD_OUTDATED):
+	cd ./hack; \
+	go build -v \
+		-o ./bin/go-mod-outdated \
+		github.com/psampaz/go-mod-outdated
+
+.PHONY: gengo
+gengo: $(GOIMPORTS) $(PROTOWRAP) $(PROTOC_GEN_GO) $(PROTOC_GEN_VTPROTO)
+	shopt -s globstar; \
+	set -eo pipefail; \
+	export PROJECT=$$(go list -m); \
+	export PATH=$$(pwd)/hack/bin:$${PATH}; \
+	mkdir -p $$(pwd)/vendor/$$(dirname $${PROJECT}); \
+	rm $$(pwd)/vendor/$${PROJECT} || true; \
+	ln -s $$(pwd) $$(pwd)/vendor/$${PROJECT} ; \
+	$(PROTOWRAP) \
+		-I $$(pwd)/vendor \
+		--go_out=$$(pwd)/vendor \
+		--go-vtproto_out=$$(pwd)/vendor \
+		--go-vtproto_opt=features=marshal+unmarshal+size+equal+clone \
+		--proto_path $$(pwd)/vendor \
+		--print_structure \
+		--only_specified_files \
+		$$(\
+			git \
+				ls-files "*.proto" |\
+				xargs printf -- \
+				"$$(pwd)/vendor/$${PROJECT}/%s "); \
+	rm $$(pwd)/vendor/$${PROJECT} || true
+	$(GOIMPORTS) -w ./
+
+.PHONY: genproto
+genproto: gengo
+
+.PHONY: gen
+gen: genproto
+
+.PHONY: outdated
+outdated: $(GO_MOD_OUTDATED)
+	go list -mod=mod -u -m -json all | $(GO_MOD_OUTDATED) -update -direct
+
+.PHONY: list
+list: $(GO_MOD_OUTDATED)
+	go list -mod=mod -u -m -json all | $(GO_MOD_OUTDATED)
+
+.PHONY: lint
+lint: $(GOLANGCI_LINT)
+	$(GOLANGCI_LINT) run
+
+.PHONY: fix
+fix: $(GOLANGCI_LINT)
+	$(GOLANGCI_LINT) run --fix
+
+.PHONY: test
+test:
+	go test -v ./...

appengine/appengine.go

@@ -12,6 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+//go:build appengine || appenginevm
 // +build appengine appenginevm
 
 package main

appengine/main.go

@@ -1,3 +1,4 @@
+//go:build appenginevm
 // +build appenginevm
 
 package main

cmd/cayley/cayley.go

@@ -12,6 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+//go:build !appengine
 // +build !appengine
 
 package main
@@ -26,7 +27,6 @@ import (
 	"strings"
 
 	"github.com/cayleygraph/cayley/cmd/cayley/command"
-	"github.com/prometheus/client_golang/prometheus/promhttp"
 	"github.com/spf13/cobra"
 	"github.com/spf13/viper"
 
@@ -89,13 +89,6 @@ var (
 					}
 				}()
 			}
-			if host, _ := cmd.Flags().GetString("metrics"); host != "" {
-				go func() {
-					if err := http.ListenAndServe(host, promhttp.Handler()); err != nil {
-						clog.Errorf("failed to run metrics handler: %v", err)
-					}
-				}()
-			}
 			return nil
 		},
 	}
@@ -160,7 +153,6 @@ func init() {
 	rootCmd.PersistentFlags().String("cpuprofile", "", "path to output cpu profile")
 
 	rootCmd.PersistentFlags().String("pprof", "", "host to serve pprof on (disabled by default)")
-	rootCmd.PersistentFlags().String("metrics", "", "host to serve metrics on (disabled by default)")
 
 	// bind flags to config variables
 	viper.BindPFlag(command.KeyBackend, rootCmd.PersistentFlags().Lookup("db"))

go.mod

@@ -1,62 +1,112 @@
 module github.com/cayleygraph/cayley
 
-go 1.12
+go 1.19
+
+replace github.com/cayleygraph/quad => github.com/paralin/cayley-quad v1.2.5-0.20230429050549-1ed30505b980 // vtprotobuf
 
 require (
 	github.com/badgerodon/peg v0.0.0-20130729175151-9e5f7f4d07ca
 	github.com/cayleygraph/quad v1.2.4
-	github.com/cockroachdb/apd v1.1.0 // indirect
-	github.com/containerd/continuity v0.0.0-20190426062206-aaeac12a7ffc // indirect
-	github.com/coreos/bbolt v1.3.3 // indirect
 	github.com/cznic/mathutil v0.0.0-20170313102836-1447ad269d64
-	github.com/d4l3k/messagediff v1.2.1 // indirect
 	github.com/dennwc/graphql v0.0.0-20180603144102-12cfed44bc5d
-	github.com/dgraph-io/badger v1.5.5 // indirect
-	github.com/dlclark/regexp2 v1.1.4 // indirect
-	github.com/docker/docker v1.6.1 // indirect
-	github.com/docker/go-units v0.4.0 // indirect
 	github.com/dop251/goja v0.0.0-20190105122144-6d5bf35058fa
-	github.com/flimzy/diff v0.1.6 // indirect
 	github.com/fsouza/go-dockerclient v1.2.2
-	github.com/go-sourcemap/sourcemap v2.1.2+incompatible // indirect
 	github.com/go-sql-driver/mysql v1.4.1
 	github.com/gobuffalo/packr/v2 v2.7.1
-	github.com/gogo/protobuf v1.3.0
 	github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b
-	github.com/google/go-cmp v0.3.0 // indirect
-	github.com/gopherjs/gopherjs v0.0.0-20190430165422-3e4dfb77656c // indirect
+	github.com/golang/protobuf v1.5.2
 	github.com/hidal-go/hidalgo v0.0.0-20190814174001-42e03f3b5eaa
-	github.com/jackc/fake v0.0.0-20150926172116-812a484cc733 // indirect
 	github.com/jackc/pgx v3.3.0+incompatible
 	github.com/julienschmidt/httprouter v1.2.0
 	github.com/lib/pq v1.1.1
+	github.com/mattn/go-sqlite3 v1.10.0
+	github.com/peterh/liner v0.0.0-20170317030525-88609521dc4b
+	github.com/phayes/freeport v0.0.0-20180830031419-95f893ade6f2
+	github.com/piprate/json-gold v0.5.0
+	github.com/spf13/cobra v0.0.5
+	github.com/spf13/viper v1.4.0
+	github.com/stretchr/testify v1.8.2
+	github.com/syndtr/goleveldb v1.0.0
+	github.com/tylertreat/BoomFilters v0.0.0-20181028192813-611b3dbe80e8
+	golang.org/x/net v0.0.0-20190628185345-da137c7871d7
+	google.golang.org/appengine v1.6.1
+)
+
+require (
+	github.com/AndreasBriese/bbloom v0.0.0-20190306092124-e2d15f34fcf9 // indirect
+	github.com/Azure/go-ansiterm v0.0.0-20170929234023-d6e3b3328b78 // indirect
+	github.com/Microsoft/go-winio v0.4.12 // indirect
+	github.com/Nvveen/Gotty v0.0.0-20120604004816-cd527374f1e5 // indirect
+	github.com/boltdb/bolt v1.3.1 // indirect
+	github.com/cenkalti/backoff v2.1.1+incompatible // indirect
+	github.com/cockroachdb/apd v1.1.0 // indirect
+	github.com/containerd/continuity v0.0.0-20190426062206-aaeac12a7ffc // indirect
+	github.com/coreos/bbolt v1.3.3 // indirect
+	github.com/d4l3k/messagediff v1.2.1 // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/dennwc/base v1.0.0 // indirect
+	github.com/dgraph-io/badger v1.5.5 // indirect
+	github.com/dgryski/go-farm v0.0.0-20190423205320-6a90982ecee2 // indirect
+	github.com/dlclark/regexp2 v1.1.4 // indirect
+	github.com/docker/docker v0.7.3-0.20180412203414-a422774e593b // indirect
+	github.com/docker/go-connections v0.4.0 // indirect
+	github.com/docker/go-units v0.4.0 // indirect
+	github.com/flimzy/diff v0.1.6 // indirect
+	github.com/flimzy/kivik v1.8.1 // indirect
+	github.com/fsnotify/fsnotify v1.4.7 // indirect
+	github.com/go-kivik/couchdb v1.8.1 // indirect
+	github.com/go-kivik/kivik v1.8.1 // indirect
+	github.com/go-kivik/pouchdb v1.3.5 // indirect
+	github.com/go-sourcemap/sourcemap v2.1.2+incompatible // indirect
+	github.com/go-stack/stack v1.8.0 // indirect
+	github.com/gobuffalo/envy v1.7.1 // indirect
+	github.com/gobuffalo/logger v1.0.1 // indirect
+	github.com/gobuffalo/packd v0.3.0 // indirect
+	github.com/gogo/protobuf v1.2.1 // indirect
+	github.com/golang/snappy v0.0.1 // indirect
+	github.com/google/uuid v1.1.1 // indirect
+	github.com/gopherjs/gopherjs v0.0.0-20190430165422-3e4dfb77656c // indirect
+	github.com/gopherjs/jsbuiltin v0.0.0-20180426082241-50091555e127 // indirect
+	github.com/hashicorp/hcl v1.0.0 // indirect
+	github.com/imdario/mergo v0.3.7 // indirect
+	github.com/inconshreveable/mousetrap v1.0.0 // indirect
+	github.com/jackc/fake v0.0.0-20150926172116-812a484cc733 // indirect
+	github.com/joho/godotenv v1.3.0 // indirect
+	github.com/konsorten/go-windows-terminal-sequences v1.0.2 // indirect
 	github.com/magiconair/properties v1.8.1 // indirect
 	github.com/mailru/easyjson v0.0.0-20190626092158-b2ccc519800e // indirect
-	github.com/mattn/go-sqlite3 v1.10.0
+	github.com/mitchellh/mapstructure v1.1.2 // indirect
+	github.com/opencontainers/go-digest v1.0.0-rc1 // indirect
+	github.com/opencontainers/image-spec v1.0.1 // indirect
+	github.com/opencontainers/runc v0.1.1 // indirect
 	github.com/opencontainers/selinux v1.0.0 // indirect
+	github.com/ory/dockertest v3.3.4+incompatible // indirect
+	github.com/pborman/uuid v1.2.0 // indirect
 	github.com/pelletier/go-toml v1.4.0 // indirect
-	github.com/peterh/liner v0.0.0-20170317030525-88609521dc4b
-	github.com/phayes/freeport v0.0.0-20180830031419-95f893ade6f2
-	github.com/piprate/json-gold v0.3.0
-	github.com/prometheus/client_golang v0.9.3
+	github.com/pkg/errors v0.8.1 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/pquerna/cachecontrol v0.0.0-20180517163645-1555304b9b35 // indirect
 	github.com/rogpeppe/go-internal v1.5.0 // indirect
 	github.com/satori/go.uuid v1.2.0 // indirect
 	github.com/shopspring/decimal v0.0.0-20180709203117-cd690d0c9e24 // indirect
+	github.com/sirupsen/logrus v1.4.2 // indirect
 	github.com/spf13/afero v1.2.2 // indirect
-	github.com/spf13/cobra v0.0.5
+	github.com/spf13/cast v1.3.0 // indirect
 	github.com/spf13/jwalterweatherman v1.1.0 // indirect
 	github.com/spf13/pflag v1.0.5 // indirect
-	github.com/spf13/viper v1.4.0
-	github.com/stretchr/testify v1.4.0
-	github.com/syndtr/goleveldb v1.0.0
-	github.com/tylertreat/BoomFilters v0.0.0-20181028192813-611b3dbe80e8
+	github.com/xdg/scram v0.0.0-20180814205039-7eeb5667e42c // indirect
+	github.com/xdg/stringprep v1.0.0 // indirect
 	go.etcd.io/bbolt v1.3.3 // indirect
+	go.mongodb.org/mongo-driver v1.0.4 // indirect
 	golang.org/x/crypto v0.0.0-20191002192127-34f69633bfdc // indirect
-	golang.org/x/net v0.0.0-20190628185345-da137c7871d7
+	golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e // indirect
 	golang.org/x/sys v0.0.0-20191009170203-06d7bd2c5f4f // indirect
+	golang.org/x/text v0.3.2 // indirect
 	golang.org/x/tools v0.0.0-20191010075000-0337d82405ff // indirect
-	google.golang.org/appengine v1.6.1
+	google.golang.org/protobuf v1.30.0 // indirect
 	gopkg.in/olivere/elastic.v5 v5.0.81 // indirect
+	gopkg.in/yaml.v2 v2.2.2 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
 )
 
 replace github.com/Sirupsen/logrus => github.com/Sirupsen/logrus v1.0.1