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s3.go
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s3.go
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// Copyright 2024 The Kanister 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 s3
import (
"strings"
"github.com/kanisterio/safecli/command"
"github.com/kanisterio/kanister/pkg/kopia/cli"
"github.com/kanisterio/kanister/pkg/kopia/cli/internal"
intlog "github.com/kanisterio/kanister/pkg/kopia/cli/internal/log"
"github.com/kanisterio/kanister/pkg/log"
)
// New creates a new subcommand for the S3 storage.
func New(location internal.Location, repoPathPrefix string, logger log.Logger) command.Applier {
if logger == nil {
logger = intlog.NopLogger{}
}
endpoint := resolveS3Endpoint(location.Endpoint(), logger)
prefix := internal.GenerateFullRepoPath(location.Prefix(), repoPathPrefix)
if prefix == "" {
return command.NewErrorArgument(cli.ErrInvalidRepoPath)
}
return command.NewArguments(subcmdS3,
optRegion(location.Region()),
optBucket(location.BucketName()),
optEndpoint(endpoint),
optPrefix(prefix),
optDisableTLS(location.IsInsecureEndpoint()),
optDisableTLSVerify(location.HasSkipSSLVerify()),
)
}
// resolveS3Endpoint removes the trailing slash and
// protocol from provided endpoint and
// returns the absolute endpoint string.
func resolveS3Endpoint(endpoint string, logger log.Logger) string {
if endpoint == "" {
return ""
}
if strings.HasSuffix(endpoint, "/") {
logger.Print("Removing trailing slashes from the endpoint")
endpoint = strings.TrimRight(endpoint, "/")
}
sp := strings.SplitN(endpoint, "://", 2)
if len(sp) > 1 {
logger.Print("Removing leading protocol from the endpoint")
}
return sp[len(sp)-1]
}