Remove dqlite support

Kine has not supported dqlite since 1.19, and canonical's kubernetes-dqlite has been dead since 2021.

Signed-off-by: Brad Davidson <[email protected]>

go.mod

@@ -6,7 +6,6 @@ toolchain go1.22.9
 
 require (
 	github.com/Rican7/retry v0.3.1
-	github.com/canonical/go-dqlite v1.5.1
 	github.com/go-sql-driver/mysql v1.8.1
 	github.com/jackc/pgerrcode v0.0.0-20220416144525-469b46aa5efa
 	github.com/jackc/pgx/v5 v5.7.1
@@ -39,7 +38,6 @@ require (
 	github.com/coreos/go-systemd/v22 v22.3.2 // indirect
 	github.com/cpuguy83/go-md2man/v2 v2.0.5 // indirect
 	github.com/dustin/go-humanize v1.0.0 // indirect
-	github.com/ghodss/yaml v1.0.0 // indirect
 	github.com/go-logr/logr v1.4.2 // indirect
 	github.com/go-logr/stdr v1.2.2 // indirect
 	github.com/gogo/protobuf v1.3.2 // indirect
@@ -98,7 +96,6 @@ require (
 	google.golang.org/genproto/googleapis/rpc v0.0.0-20240903143218-8af14fe29dc1 // indirect
 	google.golang.org/protobuf v1.34.2 // indirect
 	gopkg.in/natefinch/lumberjack.v2 v2.0.0 // indirect
-	gopkg.in/yaml.v2 v2.4.0 // indirect
 	k8s.io/klog/v2 v2.130.1 // indirect
 	k8s.io/utils v0.0.0-20240711033017-18e509b52bc8 // indirect
 	sigs.k8s.io/yaml v1.4.0 // indirect

go.sum

@@ -14,8 +14,6 @@ github.com/Rican7/retry v0.3.1/go.mod h1:CxSDrhAyXmTMeEuRAnArMu1FHu48vtfjLREWqVl
 github.com/antihax/optional v1.0.0/go.mod h1:uupD/76wgC+ih3iEmQUL+0Ugr19nfwCT1kdvxnR2qWY=
 github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
 github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
-github.com/canonical/go-dqlite v1.5.1 h1:1YjtIrFsC1A3XlgsX38ARAiKhvkZS63PqsEd8z3T4yU=
-github.com/canonical/go-dqlite v1.5.1/go.mod h1:wp00vfMvPYgNCyxcPdHB5XExmDoCGoPUGymloAQT17Y=
 github.com/cenkalti/backoff/v4 v4.2.1 h1:y4OZtCnogmCPw98Zjyt5a6+QwPLGkiQsYW5oUqylYbM=
 github.com/cenkalti/backoff/v4 v4.2.1/go.mod h1:Y3VNntkOUPxTVeUxJ/G5vcM//AlwfmyYozVcomhLiZE=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
@@ -44,7 +42,6 @@ github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1m
 github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
 github.com/envoyproxy/protoc-gen-validate v1.1.0 h1:tntQDh69XqOCOZsDz0lVJQez/2L6Uu2PdjCQwWCJ3bM=
 github.com/envoyproxy/protoc-gen-validate v1.1.0/go.mod h1:sXRDRVmzEbkM7CVcM06s9shE/m23dg3wzjl0UWqJ2q4=
-github.com/ghodss/yaml v1.0.0 h1:wQHKEahhL6wmXdzwWG11gIVCkOv05bNOh+Rxn0yngAk=
 github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
 github.com/go-kit/kit v0.9.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
 github.com/go-logfmt/logfmt v0.4.0/go.mod h1:3RMwSq7FuexP4Kalkev3ejPJsZTpXXBr9+V4qmtdjCk=

pkg/drivers/sqlite/sqlite.go

@@ -8,7 +8,6 @@ import (
 	"database/sql"
 	"fmt"
 	"os"
-	"time"
 
 	"github.com/k3s-io/kine/pkg/drivers"
 	"github.com/k3s-io/kine/pkg/drivers/generic"
@@ -99,22 +98,7 @@ func NewVariant(ctx context.Context, driverName string, cfg *drivers.Config) (se
 		return err.Error()
 	}
 
-	// this is the first SQL that will be executed on a new DB conn so
-	// loop on failure here because in the case of dqlite it could still be initializing
-	for i := 0; i < 300; i++ {
-		err = setup(dialect.DB)
-		if err == nil {
-			break
-		}
-		logrus.Errorf("failed to setup db: %v", err)
-		select {
-		case <-ctx.Done():
-			return nil, nil, ctx.Err()
-		case <-time.After(time.Second):
-		}
-		time.Sleep(time.Second)
-	}
-	if err != nil {
+	if err := setup(dialect.DB); err != nil {
 		return nil, nil, errors.Wrap(err, "setup db")
 	}
 

pkg/endpoint/init.go

@@ -2,7 +2,6 @@ package endpoint
 
 import (
 	// Import all the default drivers
-	_ "github.com/k3s-io/kine/pkg/drivers/dqlite"
 	_ "github.com/k3s-io/kine/pkg/drivers/http"
 	_ "github.com/k3s-io/kine/pkg/drivers/mysql"
 	_ "github.com/k3s-io/kine/pkg/drivers/nats"