Chore: use a single package for all Feature structs

Also replaces `golang.org/x/exp/slices` with `slices` from the Go 1.21 stdlib

> small spin-off from dapr#3046

Signed-off-by: ItalyPaleAle <[email protected]>

Author: ItalyPaleAle

.build-tools/go.mod

@@ -9,7 +9,6 @@ require (
 	github.com/invopop/jsonschema v0.6.0
 	github.com/spf13/cobra v1.6.1
 	github.com/xeipuuv/gojsonschema v1.2.1-0.20201027075954-b076d39a02e5
-	golang.org/x/exp v0.0.0-20231006140011-7918f672742d
 	gopkg.in/yaml.v3 v3.0.1
 	sigs.k8s.io/yaml v1.4.0
 )

.build-tools/go.sum

@@ -45,8 +45,6 @@ github.com/xeipuuv/gojsonreference v0.0.0-20180127040603-bd5ef7bd5415 h1:EzJWgHo
 github.com/xeipuuv/gojsonreference v0.0.0-20180127040603-bd5ef7bd5415/go.mod h1:GwrjFmJcFw6At/Gs6z4yjiIwzuJ1/+UwLxMQDVQXShQ=
 github.com/xeipuuv/gojsonschema v1.2.1-0.20201027075954-b076d39a02e5 h1:ImnGIsrcG8vwbovhYvvSY8fagVV6QhCWSWXfzwGDLVs=
 github.com/xeipuuv/gojsonschema v1.2.1-0.20201027075954-b076d39a02e5/go.mod h1:anYRn/JVcOK2ZgGU+IjEV4nwlhoK5sQluxsYJ78Id3Y=
-golang.org/x/exp v0.0.0-20231006140011-7918f672742d h1:jtJma62tbqLibJ5sFQz8bKtEM8rJBtfilJ2qTU199MI=
-golang.org/x/exp v0.0.0-20231006140011-7918f672742d/go.mod h1:ldy0pHrwJyGW56pPQzzkH36rKxoZW1tw7ZJpeKx+hdo=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f h1:BLraFXnmrev5lT+xlilqcH8XK9/i0At2xKjWk4p6zsU=
 gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=

.build-tools/pkg/metadataschema/validators.go

@@ -16,10 +16,9 @@ package metadataschema
 import (
 	"errors"
 	"fmt"
+	"slices"
 	"strings"
 
-	"golang.org/x/exp/slices"
-
 	mdutils "github.com/dapr/components-contrib/metadata"
 )
 

.golangci.yml

@@ -131,6 +131,8 @@ linters-settings:
             desc: "must use context"
           - pkg: "github.com/pkg/errors"
             desc: "must use standard library (errors package and/or fmt.Errorf)"
+          - pkg: "golang.org/x/exp/slices"
+            desc: "must use slices from standard library"
           - pkg: "github.com/go-chi/chi$"
             desc: "must use github.com/go-chi/chi/v5"
           - pkg: "github.com/cenkalti/backoff$"

bindings/cloudflare/queues/cfqueues.go

@@ -20,10 +20,9 @@ import (
 	"io"
 	"net/http"
 	"reflect"
+	"slices"
 	"strconv"
 
-	"golang.org/x/exp/slices"
-
 	"github.com/dapr/components-contrib/bindings"
 	"github.com/dapr/components-contrib/common/component/cloudflare/workers"
 	contribMetadata "github.com/dapr/components-contrib/metadata"

common/features/feature.go

@@ -0,0 +1,26 @@
+/*
+Copyright 2023 The Dapr Authors
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+    http://www.apache.org/licenses/LICENSE-2.0
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package features
+
+import (
+	"slices"
+)
+
+// Feature is a generic type for features supported by components.
+type Feature[T any] string
+
+// IsPresent checks if a given feature is present in the list.
+func (f Feature[T]) IsPresent(features []Feature[T]) bool {
+	return slices.Contains(features, f)
+}

configuration/postgres/postgres.go

@@ -20,6 +20,7 @@ import (
 	"fmt"
 	"reflect"
 	"regexp"
+	"slices"
 	"strconv"
 	"strings"
 	"sync"
@@ -28,7 +29,6 @@ import (
 	"github.com/jackc/pgx/v5"
 	"github.com/jackc/pgx/v5/pgconn"
 	"github.com/jackc/pgx/v5/pgxpool"
-	"golang.org/x/exp/slices"
 
 	"github.com/dapr/components-contrib/configuration"
 	contribMetadata "github.com/dapr/components-contrib/metadata"

crypto/feature.go

@@ -14,13 +14,8 @@ limitations under the License.
 package crypto
 
 import (
-	"golang.org/x/exp/slices"
+	"github.com/dapr/components-contrib/common/features"
 )
 
 // Feature names a feature that can be implemented by the crypto provider components.
-type Feature string
-
-// IsPresent checks if a given feature is present in the list.
-func (f Feature) IsPresent(features []Feature) bool {
-	return slices.Contains(features, f)
-}
+type Feature = features.Feature[SubtleCrypto]

crypto/key.go

@@ -15,10 +15,10 @@ package crypto
 
 import (
 	"encoding/json"
+	"slices"
 	"time"
 
 	"github.com/lestrrat-go/jwx/v2/jwk"
-	"golang.org/x/exp/slices"
 )
 
 // Key extends jwk.Key adding optional properties for determining if the key is valid (time bounds) or can be used for certain purposes.

middleware/http/opa/middleware.go

@@ -24,12 +24,12 @@ import (
 	"net/http"
 	"net/textproto"
 	"reflect"
+	"slices"
 	"strconv"
 	"strings"
 	"time"
 
 	"github.com/open-policy-agent/opa/rego"
-	"golang.org/x/exp/slices"
 
 	"github.com/dapr/components-contrib/common/httputils"
 	contribMetadata "github.com/dapr/components-contrib/metadata"