mirror of
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59 lines
1.4 KiB
Go
59 lines
1.4 KiB
Go
package gs
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import (
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"path"
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"strings"
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"github.com/restic/restic/internal/errors"
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"github.com/restic/restic/internal/options"
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)
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// Config contains all configuration necessary to connect to a Google Cloud Storage
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// bucket. We use Google's default application credentials to acquire an access token, so
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// we don't require that calling code supply any authentication material here.
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type Config struct {
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ProjectID string
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Bucket string
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Prefix string
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Connections uint `option:"connections" help:"set a limit for the number of concurrent connections (default: 20)"`
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}
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// NewConfig returns a new Config with the default values filled in.
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func NewConfig() Config {
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return Config{
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Connections: 5,
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}
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}
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func init() {
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options.Register("gs", Config{})
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}
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// ParseConfig parses the string s and extracts the gcs config. The
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// supported configuration format is gs:bucketName:/[prefix].
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func ParseConfig(s string) (interface{}, error) {
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if !strings.HasPrefix(s, "gs:") {
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return nil, errors.New("gs: invalid format")
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}
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// strip prefix "gs:"
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s = s[3:]
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// use the first entry of the path as the bucket name and the
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// remainder as prefix
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data := strings.SplitN(s, ":", 2)
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if len(data) < 2 {
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return nil, errors.New("gs: invalid format: bucket name or path not found")
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}
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bucket, path := data[0], path.Clean(data[1])
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path = strings.TrimPrefix(path, "/")
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cfg := NewConfig()
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cfg.Bucket = bucket
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cfg.Prefix = path
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return cfg, nil
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}
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