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The `s3.storage-class` option can be passed to restic (using `-o`) to specify the storage class to be used for S3 objects created by restic. The storage class is passed as-is to S3, so it needs to be understood by the API. On AWS, it can be one of `STANDARD`, `STANDARD_IA`, `ONEZONE_IA`, `INTELLIGENT_TIERING` and `REDUCED_REDUNDANCY`. If unspecified, the default storage class is used (`STANDARD` on AWS). You can mix storage classes in the same bucket, and the setting isn't stored in the restic repository, so be sure to specify it with each command that writes to S3. Closes #706
89 lines
2.5 KiB
Go
89 lines
2.5 KiB
Go
package s3
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import (
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"net/url"
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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 an s3 compatible
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// server.
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type Config struct {
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Endpoint string
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UseHTTP bool
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KeyID, Secret string
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Bucket string
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Prefix string
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Layout string `option:"layout" help:"use this backend layout (default: auto-detect)"`
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StorageClass string `option:"storage-class" help:"set S3 storage class (STANDARD, STANDARD_IA, ONEZONE_IA, INTELLIGENT_TIERING or REDUCED_REDUNDANCY)"`
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Connections uint `option:"connections" help:"set a limit for the number of concurrent connections (default: 5)"`
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MaxRetries uint `option:"retries" help:"set the number of retries attempted"`
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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("s3", Config{})
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}
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// ParseConfig parses the string s and extracts the s3 config. The two
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// supported configuration formats are s3://host/bucketname/prefix and
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// s3:host/bucketname/prefix. The host can also be a valid s3 region
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// name. If no prefix is given the prefix "restic" will be used.
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func ParseConfig(s string) (interface{}, error) {
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switch {
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case strings.HasPrefix(s, "s3:http"):
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// assume that a URL has been specified, parse it and
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// use the host as the endpoint and the path as the
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// bucket name and prefix
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url, err := url.Parse(s[3:])
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if err != nil {
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return nil, errors.Wrap(err, "url.Parse")
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}
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if url.Path == "" {
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return nil, errors.New("s3: bucket name not found")
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}
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path := strings.SplitN(url.Path[1:], "/", 2)
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return createConfig(url.Host, path, url.Scheme == "http")
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case strings.HasPrefix(s, "s3://"):
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s = s[5:]
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case strings.HasPrefix(s, "s3:"):
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s = s[3:]
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default:
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return nil, errors.New("s3: invalid format")
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}
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// use the first entry of the path as the endpoint and the
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// remainder as bucket name and prefix
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path := strings.SplitN(s, "/", 3)
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return createConfig(path[0], path[1:], false)
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}
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func createConfig(endpoint string, p []string, useHTTP bool) (interface{}, error) {
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if len(p) < 1 {
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return nil, errors.New("s3: invalid format, host/region or bucket name not found")
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}
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var prefix string
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if len(p) > 1 && p[1] != "" {
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prefix = path.Clean(p[1])
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}
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cfg := NewConfig()
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cfg.Endpoint = endpoint
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cfg.UseHTTP = useHTTP
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cfg.Bucket = p[0]
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cfg.Prefix = prefix
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return cfg, nil
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}
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