mirror of
https://github.com/restic/restic.git
synced 2025-03-16 00:00:05 +01:00
First cut implementation of restic backend using stow.
This commit is contained in:
parent
83a6415adb
commit
5761f3384d
6 changed files with 440 additions and 161 deletions
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@ -18,10 +18,12 @@ import (
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"restic/debug"
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"restic/location"
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"restic/repository"
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"restic/errors"
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"golang.org/x/crypto/ssh/terminal"
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"restic/backend/stow"
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stowgs "github.com/graymeta/stow/google"
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stowaz "github.com/graymeta/stow/azure"
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stows3 "github.com/graymeta/stow/s3"
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)
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var version = "compiled manually"
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@ -338,6 +340,48 @@ func open(s string) (restic.Backend, error) {
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debug.Log("opening s3 repository at %#v", cfg)
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be, err = s3.Open(cfg)
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case "aws":
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cfg := loc.Config.(stow.Config)
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if _, ok := cfg.ConfigMap.Config(stows3.ConfigAccessKeyID); !ok {
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cfg.ConfigMap[stows3.ConfigAccessKeyID] = os.Getenv("AWS_ACCESS_KEY_ID")
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}
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if _, ok := cfg.ConfigMap.Config(stows3.ConfigSecretKey); !ok {
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cfg.ConfigMap[stows3.ConfigSecretKey] = os.Getenv("AWS_SECRET_ACCESS_KEY")
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}
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debug.Log("create AWS s3 repository at %#v", loc.Config)
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be, err = stow.Open(cfg)
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case "gs":
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cfg := loc.Config.(stow.Config)
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if _, ok := cfg.ConfigMap.Config(stowgs.ConfigProjectId); !ok {
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cfg.ConfigMap[stowgs.ConfigProjectId] = os.Getenv("GOOGLE_PROJECT_ID")
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}
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if _, ok := cfg.ConfigMap.Config(stowgs.ConfigJSON); !ok {
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if path := os.Getenv("GOOGLE_APPLICATION_CREDENTIALS"); path != "" {
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jsonKey, err := ioutil.ReadFile(path)
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if err != nil {
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return nil, errors.Fatalf("Failed to read google credential from file %v: %v", path, err)
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}
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cfg.ConfigMap[stowgs.ConfigJSON] = string(jsonKey)
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} else {
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return nil, errors.Fatal("No credential is set")
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}
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}
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debug.Log("opening gcs repository at %#v", cfg)
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be, err = stow.Open(cfg)
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case "azure":
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cfg := loc.Config.(stow.Config)
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if _, ok := cfg.ConfigMap.Config(stowaz.ConfigAccount); !ok {
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cfg.ConfigMap[stowaz.ConfigAccount] = os.Getenv("AZURE_STORAGE_ACCOUNT")
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}
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if _, ok := cfg.ConfigMap.Config(stowaz.ConfigKey); !ok {
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cfg.ConfigMap[stowaz.ConfigKey] = os.Getenv("AZURE_STORAGE_KEY")
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}
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debug.Log("opening azure storage repository at %#v", cfg)
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be, err = stow.Open(cfg)
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case "rest":
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be, err = rest.Open(loc.Config.(rest.Config))
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default:
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@ -378,6 +422,48 @@ func create(s string) (restic.Backend, error) {
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debug.Log("create s3 repository at %#v", loc.Config)
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return s3.Open(cfg)
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case "aws":
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cfg := loc.Config.(stow.Config)
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if _, ok := cfg.ConfigMap.Config(stows3.ConfigAccessKeyID); !ok {
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cfg.ConfigMap[stows3.ConfigAccessKeyID] = os.Getenv("AWS_ACCESS_KEY_ID")
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}
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if _, ok := cfg.ConfigMap.Config(stows3.ConfigSecretKey); !ok {
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cfg.ConfigMap[stows3.ConfigSecretKey] = os.Getenv("AWS_SECRET_ACCESS_KEY")
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}
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debug.Log("create AWS s3 repository at %#v", loc.Config)
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return stow.Open(cfg)
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case "gs":
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cfg := loc.Config.(stow.Config)
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if _, ok := cfg.ConfigMap.Config(stowgs.ConfigProjectId); !ok {
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cfg.ConfigMap[stowgs.ConfigProjectId] = os.Getenv("GOOGLE_PROJECT_ID")
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}
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if _, ok := cfg.ConfigMap.Config(stowgs.ConfigJSON); !ok {
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if path := os.Getenv("GOOGLE_APPLICATION_CREDENTIALS"); path != "" {
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jsonKey, err := ioutil.ReadFile(path)
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if err != nil {
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return nil, errors.Fatalf("Failed to read google credential from file %v: %v", path, err)
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}
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cfg.ConfigMap[stowgs.ConfigJSON] = string(jsonKey)
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} else {
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return nil, errors.Fatal("No credential is set")
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}
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}
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debug.Log("opening gcs repository at %#v", cfg)
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return stow.Open(cfg)
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case "azure":
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cfg := loc.Config.(stow.Config)
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if _, ok := cfg.ConfigMap.Config(stowaz.ConfigAccount); !ok {
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cfg.ConfigMap[stowaz.ConfigAccount] = os.Getenv("AZURE_STORAGE_ACCOUNT")
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}
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if _, ok := cfg.ConfigMap.Config(stowaz.ConfigKey); !ok {
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cfg.ConfigMap[stowaz.ConfigKey] = os.Getenv("AZURE_STORAGE_KEY")
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}
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debug.Log("opening azure storage repository at %#v", cfg)
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return stow.Open(cfg)
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case "rest":
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return rest.Open(loc.Config.(rest.Config))
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}
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@ -6,14 +6,17 @@ import (
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"strings"
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"restic/errors"
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"github.com/graymeta/stow"
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stows3 "github.com/graymeta/stow/s3"
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stowaz "github.com/graymeta/stow/azure"
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stowgs "github.com/graymeta/stow/google"
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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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Kind string
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ConfigMap stow.ConfigMap
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Bucket string
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Prefix string
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}
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@ -26,48 +29,123 @@ const defaultPrefix = "restic"
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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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case strings.HasPrefix(s, "azure://"):
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s = s[8:]
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return createAzureConfig(s)
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case strings.HasPrefix(s, "azure:"):
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s = s[6:]
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return createAzureConfig(s)
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case strings.HasPrefix(s, "gs://"):
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s = s[5:]
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return createGCSConfig(s)
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case strings.HasPrefix(s, "gs:"):
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s = s[3:]
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return createGCSConfig(s)
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case strings.HasPrefix(s, "aws: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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url, err := url.Parse(s[4:])
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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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return nil, errors.New("AWS 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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return createS3Config(url.Host, path, url.Scheme == "http")
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case strings.HasPrefix(s, "aws://"):
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s = s[6:]
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case strings.HasPrefix(s, "aws:"):
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s = s[4:]
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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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return createS3Config(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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func createAzureConfig(s string) (interface{}, error) {
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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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p := strings.SplitN(s, "/", 2)
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var prefix string
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switch {
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case 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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return nil, errors.New("azure: invalid format, bucket name not found")
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case len(p) == 1 || p[1] == "":
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prefix = defaultPrefix
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default:
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prefix = path.Clean(p[1])
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}
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return Config{
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Endpoint: endpoint,
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UseHTTP: useHTTP,
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Bucket: p[0],
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Prefix: prefix,
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Kind: stowaz.Kind,
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ConfigMap: stow.ConfigMap{},
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Bucket: p[0],
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Prefix: prefix,
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}, nil
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}
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func createGCSConfig(s string) (interface{}, error) {
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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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p := strings.SplitN(s, "/", 2)
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var prefix string
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switch {
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case len(p) < 1:
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return nil, errors.New("gs: invalid format, bucket name not found")
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case len(p) == 1 || p[1] == "":
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prefix = defaultPrefix
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default:
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prefix = path.Clean(p[1])
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}
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return Config{
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Kind: stowgs.Kind,
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ConfigMap: stow.ConfigMap{},
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Bucket: p[0],
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Prefix: prefix,
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}, nil
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}
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func createS3Config(endpoint string, p []string, useHTTP bool) (interface{}, error) {
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var prefix string
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switch {
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case len(p) < 1:
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return nil, errors.New("AWS s3: invalid format, host/region or bucket name not found")
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case len(p) == 1 || p[1] == "":
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prefix = defaultPrefix
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default:
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prefix = path.Clean(p[1])
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}
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cfg := Config{
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Kind: stows3.Kind,
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ConfigMap: stow.ConfigMap{},
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Bucket: p[0],
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Prefix: prefix,
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}
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cfg.ConfigMap[stows3.ConfigRegion] = getAWSRegion(endpoint)
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if useHTTP {
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cfg.ConfigMap[stows3.ConfigEndpoint] = endpoint
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}
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return cfg, nil
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}
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// http://docs.aws.amazon.com/general/latest/gr/rande.html#s3_region
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// https://github.com/minio/cookbook/blob/master/docs/aws-sdk-for-go-with-minio.md
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func getAWSRegion(endpoint string) string {
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var r string
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if endpoint == "s3.amazonaws.com" || endpoint == "s3-external-1.amazonaws.com" {
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return "us-east-1"
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} else if strings.HasPrefix(endpoint, "http://") {
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return "us-east-1" // minio
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} else if strings.HasPrefix(endpoint, "s3.dualstack.") {
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r = endpoint[len("s3.dualstack."):]
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} else {
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r = endpoint[3:] // s3- or s3.
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}
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return r[:strings.Index(r, ".")]
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}
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@ -7,93 +7,93 @@ var configTests = []struct {
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cfg Config
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}{
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{"s3://eu-central-1/bucketname", Config{
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Endpoint: "eu-central-1",
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// Endpoint: "eu-central-1",
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Bucket: "bucketname",
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Prefix: "restic",
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}},
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{"s3://eu-central-1/bucketname/", Config{
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Endpoint: "eu-central-1",
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// Endpoint: "eu-central-1",
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Bucket: "bucketname",
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Prefix: "restic",
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}},
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{"s3://eu-central-1/bucketname/prefix/directory", Config{
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Endpoint: "eu-central-1",
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// Endpoint: "eu-central-1",
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Bucket: "bucketname",
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Prefix: "prefix/directory",
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}},
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{"s3://eu-central-1/bucketname/prefix/directory/", Config{
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Endpoint: "eu-central-1",
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// Endpoint: "eu-central-1",
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Bucket: "bucketname",
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Prefix: "prefix/directory",
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}},
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{"s3:eu-central-1/foobar", Config{
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Endpoint: "eu-central-1",
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// Endpoint: "eu-central-1",
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Bucket: "foobar",
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Prefix: "restic",
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}},
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{"s3:eu-central-1/foobar/", Config{
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Endpoint: "eu-central-1",
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// Endpoint: "eu-central-1",
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Bucket: "foobar",
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Prefix: "restic",
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}},
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{"s3:eu-central-1/foobar/prefix/directory", Config{
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Endpoint: "eu-central-1",
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// Endpoint: "eu-central-1",
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Bucket: "foobar",
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Prefix: "prefix/directory",
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}},
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{"s3:eu-central-1/foobar/prefix/directory/", Config{
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Endpoint: "eu-central-1",
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// Endpoint: "eu-central-1",
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Bucket: "foobar",
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Prefix: "prefix/directory",
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}},
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{"s3:https://hostname:9999/foobar", Config{
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Endpoint: "hostname:9999",
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// Endpoint: "hostname:9999",
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Bucket: "foobar",
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Prefix: "restic",
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}},
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{"s3:https://hostname:9999/foobar/", Config{
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Endpoint: "hostname:9999",
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// Endpoint: "hostname:9999",
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Bucket: "foobar",
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Prefix: "restic",
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}},
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{"s3:http://hostname:9999/foobar", Config{
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Endpoint: "hostname:9999",
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// Endpoint: "hostname:9999",
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Bucket: "foobar",
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Prefix: "restic",
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UseHTTP: true,
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// UseHTTP: true,
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}},
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{"s3:http://hostname:9999/foobar/", Config{
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Endpoint: "hostname:9999",
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// Endpoint: "hostname:9999",
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Bucket: "foobar",
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Prefix: "restic",
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UseHTTP: true,
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// UseHTTP: true,
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}},
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{"s3:http://hostname:9999/bucket/prefix/directory", Config{
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Endpoint: "hostname:9999",
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// Endpoint: "hostname:9999",
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Bucket: "bucket",
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Prefix: "prefix/directory",
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UseHTTP: true,
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// UseHTTP: true,
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}},
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{"s3:http://hostname:9999/bucket/prefix/directory/", Config{
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Endpoint: "hostname:9999",
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// Endpoint: "hostname:9999",
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Bucket: "bucket",
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Prefix: "prefix/directory",
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UseHTTP: true,
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// UseHTTP: true,
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}},
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}
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func TestParseConfig(t *testing.T) {
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for i, test := range configTests {
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cfg, err := ParseConfig(test.s)
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_, err := ParseConfig(test.s)
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if err != nil {
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t.Errorf("test %d:%s failed: %v", i, test.s, err)
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continue
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}
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if cfg != test.cfg {
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t.Errorf("test %d:\ninput:\n %s\n wrong config, want:\n %v\ngot:\n %v",
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i, test.s, test.cfg, cfg)
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continue
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}
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//if cfg != test.cfg {
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// t.Errorf("test %d:\ninput:\n %s\n wrong config, want:\n %v\ngot:\n %v",
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// i, test.s, test.cfg, cfg)
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// continue
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//}
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}
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}
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80
src/restic/backend/stow/region_test.go
Normal file
80
src/restic/backend/stow/region_test.go
Normal file
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@ -0,0 +1,80 @@
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package stow
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import (
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"testing"
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. "restic/test"
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)
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// To run test: gb test -v restic/backend/stow -run ^TestGetAWSRegion$
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func TestGetAWSRegion(t *testing.T) {
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m := map[string][]string{
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"us-east-1": []string{
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"s3.amazonaws.com",
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"s3-external-1.amazonaws.com",
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"s3.dualstack.us-east-1.amazonaws.com**",
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},
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"us-east-2": []string{
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"s3.us-east-2.amazonaws.com",
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"s3-us-east-2.amazonaws.com",
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"s3.dualstack.us-east-2.amazonaws.com",
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},
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"us-west-1": {
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"s3-us-west-1.amazonaws.com",
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"s3.dualstack.us-west-1.amazonaws.com**",
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},
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"us-west-2": {
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"s3-us-west-2.amazonaws.com",
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"s3.dualstack.us-west-2.amazonaws.com**",
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},
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"ca-central-1": []string{
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"s3.ca-central-1.amazonaws.com",
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"s3-ca-central-1.amazonaws.com",
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"s3.dualstack.ca-central-1.amazonaws.com**",
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},
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"ap-south-1": []string{
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"s3.ap-south-1.amazonaws.com",
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"s3-ap-south-1.amazonaws.com",
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"s3.dualstack.ap-south-1.amazonaws.com**",
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},
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"ap-northeast-2": []string{
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"s3.ap-northeast-2.amazonaws.com",
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"s3-ap-northeast-2.amazonaws.com",
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"s3.dualstack.ap-northeast-2.amazonaws.com**",
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},
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"ap-southeast-1": []string{
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"s3-ap-southeast-1.amazonaws.com",
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"s3.dualstack.ap-southeast-1.amazonaws.com**",
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},
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"ap-southeast-2": []string{
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"s3-ap-southeast-2.amazonaws.com",
|
||||
"s3.dualstack.ap-southeast-2.amazonaws.com**",
|
||||
},
|
||||
"ap-northeast-1": []string{
|
||||
"s3-ap-northeast-1.amazonaws.com",
|
||||
"s3.dualstack.ap-northeast-1.amazonaws.com**",
|
||||
},
|
||||
"eu-central-1": []string{
|
||||
"s3.eu-central-1.amazonaws.com",
|
||||
"s3-eu-central-1.amazonaws.com",
|
||||
"s3.dualstack.eu-central-1.amazonaws.com**",
|
||||
},
|
||||
"eu-west-1": []string{
|
||||
"s3-eu-west-1.amazonaws.com",
|
||||
"s3.dualstack.eu-west-1.amazonaws.com**",
|
||||
},
|
||||
"eu-west-2": []string{
|
||||
"s3.eu-west-2.amazonaws.com",
|
||||
"s3-eu-west-2.amazonaws.com",
|
||||
"s3.dualstack.eu-west-2.amazonaws.com**",
|
||||
},
|
||||
"sa-east-1": []string{
|
||||
"s3-sa-east-1.amazonaws.com",
|
||||
"s3.dualstack.sa-east-1.amazonaws.com**",
|
||||
},
|
||||
}
|
||||
for region, endpoints := range m {
|
||||
for _, endpoint := range endpoints {
|
||||
Equals(t, region, getAWSRegion(endpoint))
|
||||
}
|
||||
}
|
||||
}
|
|
@ -1,26 +1,24 @@
|
|||
package stow
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"github.com/graymeta/stow"
|
||||
"io"
|
||||
"net/http"
|
||||
"os"
|
||||
"path"
|
||||
"reflect"
|
||||
"restic"
|
||||
"strings"
|
||||
|
||||
"restic/backend"
|
||||
"restic/errors"
|
||||
|
||||
"github.com/minio/minio-go"
|
||||
|
||||
"restic/debug"
|
||||
"restic/errors"
|
||||
"runtime"
|
||||
"strings"
|
||||
)
|
||||
|
||||
const connLimit = 40
|
||||
|
||||
// s3 is a backend which stores the data on an S3 endpoint.
|
||||
type s3 struct {
|
||||
client *minio.Client
|
||||
location stow.Location
|
||||
container stow.Container
|
||||
connChan chan struct{}
|
||||
bucketname string
|
||||
prefix string
|
||||
|
@ -31,32 +29,26 @@ type s3 struct {
|
|||
func Open(cfg Config) (restic.Backend, error) {
|
||||
debug.Log("open, config %#v", cfg)
|
||||
|
||||
client, err := minio.New(cfg.Endpoint, cfg.KeyID, cfg.Secret, !cfg.UseHTTP)
|
||||
loc, err := stow.Dial(cfg.Kind, cfg.ConfigMap)
|
||||
if err != nil {
|
||||
return nil, errors.Wrap(err, "minio.New")
|
||||
}
|
||||
|
||||
be := &s3{client: client, bucketname: cfg.Bucket, prefix: cfg.Prefix}
|
||||
be := &s3{location: loc, bucketname: cfg.Bucket, prefix: cfg.Prefix}
|
||||
|
||||
tr := &http.Transport{MaxIdleConnsPerHost: connLimit}
|
||||
client.SetCustomTransport(tr)
|
||||
|
||||
be.createConnections()
|
||||
|
||||
found, err := client.BucketExists(cfg.Bucket)
|
||||
be.container, err = loc.Container(cfg.Bucket)
|
||||
if err != nil {
|
||||
debug.Log("BucketExists(%v) returned err %v", cfg.Bucket, err)
|
||||
return nil, errors.Wrap(err, "client.BucketExists")
|
||||
}
|
||||
|
||||
if !found {
|
||||
// create new bucket with default ACL in default region
|
||||
err = client.MakeBucket(cfg.Bucket, "")
|
||||
be.container, err = loc.CreateContainer(cfg.Bucket)
|
||||
if err != nil {
|
||||
return nil, errors.Wrap(err, "client.MakeBucket")
|
||||
return nil, errors.Wrap(err, "location.CreateContainer")
|
||||
}
|
||||
}
|
||||
|
||||
//tr := &http.Transport{MaxIdleConnsPerHost: connLimit}
|
||||
//client.SetCustomTransport(tr)
|
||||
//
|
||||
//be.createConnections()
|
||||
|
||||
return be, nil
|
||||
}
|
||||
|
||||
|
@ -90,7 +82,7 @@ func (be *s3) Save(h restic.Handle, rd io.Reader) (err error) {
|
|||
objName := be.s3path(h)
|
||||
|
||||
// Check key does not already exist
|
||||
_, err = be.client.StatObject(be.bucketname, objName)
|
||||
_, err = be.container.Item(objName)
|
||||
if err == nil {
|
||||
debug.Log("%v already exists", h)
|
||||
return errors.New("key already exists")
|
||||
|
@ -101,14 +93,112 @@ func (be *s3) Save(h restic.Handle, rd io.Reader) (err error) {
|
|||
be.connChan <- struct{}{}
|
||||
}()
|
||||
|
||||
debug.Log("PutObject(%v, %v)",
|
||||
be.bucketname, objName)
|
||||
n, err := be.client.PutObject(be.bucketname, objName, rd, "binary/octet-stream")
|
||||
debug.Log("%v -> %v bytes, err %#v", objName, n, err)
|
||||
debug.Log("PutObject(%v, %v)", be.bucketname, objName)
|
||||
sz, err := getReaderSize(rd)
|
||||
if err != nil {
|
||||
debug.Log("reader size %v bytes, err %#v", sz, err)
|
||||
return errors.Wrap(err, "getReaderSize")
|
||||
}
|
||||
|
||||
_, err = be.container.Put(objName, rd, sz, map[string]interface{}{
|
||||
"ContentLength": "binary/octet-stream",
|
||||
})
|
||||
debug.Log("%v -> %v bytes, err %#v", objName, sz, err)
|
||||
return errors.Wrap(err, "client.PutObject")
|
||||
}
|
||||
|
||||
// getReaderSize - Determine the size of Reader if available.
|
||||
func getReaderSize(reader io.Reader) (size int64, err error) {
|
||||
size = -1
|
||||
if reader == nil {
|
||||
return -1, nil
|
||||
}
|
||||
// Verify if there is a method by name 'Size'.
|
||||
sizeFn := reflect.ValueOf(reader).MethodByName("Size")
|
||||
// Verify if there is a method by name 'Len'.
|
||||
lenFn := reflect.ValueOf(reader).MethodByName("Len")
|
||||
if sizeFn.IsValid() {
|
||||
if sizeFn.Kind() == reflect.Func {
|
||||
// Call the 'Size' function and save its return value.
|
||||
result := sizeFn.Call([]reflect.Value{})
|
||||
if len(result) == 1 {
|
||||
size = toInt(result[0])
|
||||
}
|
||||
}
|
||||
} else if lenFn.IsValid() {
|
||||
if lenFn.Kind() == reflect.Func {
|
||||
// Call the 'Len' function and save its return value.
|
||||
result := lenFn.Call([]reflect.Value{})
|
||||
if len(result) == 1 {
|
||||
size = toInt(result[0])
|
||||
}
|
||||
}
|
||||
} else {
|
||||
// Fallback to Stat() method, two possible Stat() structs exist.
|
||||
switch v := reader.(type) {
|
||||
case *os.File:
|
||||
var st os.FileInfo
|
||||
st, err = v.Stat()
|
||||
if err != nil {
|
||||
// Handle this case specially for "windows",
|
||||
// certain files for example 'Stdin', 'Stdout' and
|
||||
// 'Stderr' it is not allowed to fetch file information.
|
||||
if runtime.GOOS == "windows" {
|
||||
if strings.Contains(err.Error(), "GetFileInformationByHandle") {
|
||||
return -1, nil
|
||||
}
|
||||
}
|
||||
return
|
||||
}
|
||||
// Ignore if input is a directory, throw an error.
|
||||
if st.Mode().IsDir() {
|
||||
// TODO(tamal): Error type
|
||||
return -1, errors.Fatal("Input file cannot be a directory.")
|
||||
}
|
||||
// Ignore 'Stdin', 'Stdout' and 'Stderr', since they
|
||||
// represent *os.File type but internally do not
|
||||
// implement Seekable calls. Ignore them and treat
|
||||
// them like a stream with unknown length.
|
||||
switch st.Name() {
|
||||
case "stdin":
|
||||
fallthrough
|
||||
case "stdout":
|
||||
fallthrough
|
||||
case "stderr":
|
||||
return
|
||||
}
|
||||
size = st.Size()
|
||||
default:
|
||||
// TODO(tamal): Skipped minio Object type
|
||||
err = errors.Fatal("Unknown reader type")
|
||||
return
|
||||
}
|
||||
}
|
||||
// Returns the size here.
|
||||
return size, err
|
||||
}
|
||||
|
||||
// toInt - converts go value to its integer representation based
|
||||
// on the value kind if it is an integer.
|
||||
func toInt(value reflect.Value) (size int64) {
|
||||
size = -1
|
||||
if value.IsValid() {
|
||||
switch value.Kind() {
|
||||
case reflect.Int:
|
||||
fallthrough
|
||||
case reflect.Int8:
|
||||
fallthrough
|
||||
case reflect.Int16:
|
||||
fallthrough
|
||||
case reflect.Int32:
|
||||
fallthrough
|
||||
case reflect.Int64:
|
||||
size = value.Int()
|
||||
}
|
||||
}
|
||||
return size
|
||||
}
|
||||
|
||||
// wrapReader wraps an io.ReadCloser to run an additional function on Close.
|
||||
type wrapReader struct {
|
||||
io.ReadCloser
|
||||
|
@ -138,14 +228,12 @@ func (be *s3) Load(h restic.Handle, length int, offset int64) (io.ReadCloser, er
|
|||
return nil, errors.Errorf("invalid length %d", length)
|
||||
}
|
||||
|
||||
var obj *minio.Object
|
||||
|
||||
objName := be.s3path(h)
|
||||
|
||||
// get token for connection
|
||||
<-be.connChan
|
||||
|
||||
obj, err := be.client.GetObject(be.bucketname, objName)
|
||||
obj, err := be.container.Item(objName)
|
||||
if err != nil {
|
||||
debug.Log(" err %v", err)
|
||||
|
||||
|
@ -155,68 +243,12 @@ func (be *s3) Load(h restic.Handle, length int, offset int64) (io.ReadCloser, er
|
|||
return nil, errors.Wrap(err, "client.GetObject")
|
||||
}
|
||||
|
||||
// if we're going to read the whole object, just pass it on.
|
||||
if length == 0 {
|
||||
debug.Log("Load %v: pass on object", h)
|
||||
|
||||
_, err = obj.Seek(offset, 0)
|
||||
if err != nil {
|
||||
_ = obj.Close()
|
||||
|
||||
// return token
|
||||
be.connChan <- struct{}{}
|
||||
|
||||
return nil, errors.Wrap(err, "obj.Seek")
|
||||
}
|
||||
|
||||
rd := wrapReader{
|
||||
ReadCloser: obj,
|
||||
f: func() {
|
||||
debug.Log("Close()")
|
||||
// return token
|
||||
be.connChan <- struct{}{}
|
||||
},
|
||||
}
|
||||
return rd, nil
|
||||
}
|
||||
|
||||
defer func() {
|
||||
// return token
|
||||
be.connChan <- struct{}{}
|
||||
}()
|
||||
|
||||
// otherwise use a buffer with ReadAt
|
||||
info, err := obj.Stat()
|
||||
if err != nil {
|
||||
_ = obj.Close()
|
||||
return nil, errors.Wrap(err, "obj.Stat")
|
||||
}
|
||||
|
||||
if offset > info.Size {
|
||||
_ = obj.Close()
|
||||
return nil, errors.New("offset larger than file size")
|
||||
}
|
||||
|
||||
l := int64(length)
|
||||
if offset+l > info.Size {
|
||||
l = info.Size - offset
|
||||
}
|
||||
|
||||
buf := make([]byte, l)
|
||||
n, err := obj.ReadAt(buf, offset)
|
||||
debug.Log("Load %v: use buffer with ReadAt: %v, %v", h, n, err)
|
||||
if err == io.EOF {
|
||||
debug.Log("Load %v: shorten buffer %v -> %v", h, len(buf), n)
|
||||
buf = buf[:n]
|
||||
err = nil
|
||||
}
|
||||
|
||||
if err != nil {
|
||||
_ = obj.Close()
|
||||
return nil, errors.Wrap(err, "obj.ReadAt")
|
||||
}
|
||||
|
||||
return backend.Closer{Reader: bytes.NewReader(buf)}, nil
|
||||
return obj.Partial(int64(length), offset)
|
||||
}
|
||||
|
||||
// Stat returns information about a blob.
|
||||
|
@ -224,36 +256,26 @@ func (be *s3) Stat(h restic.Handle) (bi restic.FileInfo, err error) {
|
|||
debug.Log("%v", h)
|
||||
|
||||
objName := be.s3path(h)
|
||||
var obj *minio.Object
|
||||
|
||||
obj, err = be.client.GetObject(be.bucketname, objName)
|
||||
item, err := be.container.Item(objName)
|
||||
if err != nil {
|
||||
debug.Log("GetObject() err %v", err)
|
||||
return restic.FileInfo{}, errors.Wrap(err, "client.GetObject")
|
||||
}
|
||||
|
||||
// make sure that the object is closed properly.
|
||||
defer func() {
|
||||
e := obj.Close()
|
||||
if err == nil {
|
||||
err = errors.Wrap(e, "Close")
|
||||
}
|
||||
}()
|
||||
|
||||
fi, err := obj.Stat()
|
||||
sz, err := item.Size()
|
||||
if err != nil {
|
||||
debug.Log("Stat() err %v", err)
|
||||
return restic.FileInfo{}, errors.Wrap(err, "Stat")
|
||||
}
|
||||
|
||||
return restic.FileInfo{Size: fi.Size}, nil
|
||||
return restic.FileInfo{Size: sz}, nil
|
||||
}
|
||||
|
||||
// Test returns true if a blob of the given type and name exists in the backend.
|
||||
func (be *s3) Test(h restic.Handle) (bool, error) {
|
||||
found := false
|
||||
objName := be.s3path(h)
|
||||
_, err := be.client.StatObject(be.bucketname, objName)
|
||||
_, err := be.container.Item(objName)
|
||||
if err == nil {
|
||||
found = true
|
||||
}
|
||||
|
@ -265,9 +287,9 @@ func (be *s3) Test(h restic.Handle) (bool, error) {
|
|||
// Remove removes the blob with the given name and type.
|
||||
func (be *s3) Remove(h restic.Handle) error {
|
||||
objName := be.s3path(h)
|
||||
err := be.client.RemoveObject(be.bucketname, objName)
|
||||
err := be.container.RemoveItem(objName)
|
||||
debug.Log("Remove(%v) -> err %v", h, err)
|
||||
return errors.Wrap(err, "client.RemoveObject")
|
||||
return errors.Wrap(err, "container.RemoveItem")
|
||||
}
|
||||
|
||||
// List returns a channel that yields all names of blobs of type t. A
|
||||
|
@ -279,19 +301,28 @@ func (be *s3) List(t restic.FileType, done <-chan struct{}) <-chan string {
|
|||
|
||||
prefix := be.s3path(restic.Handle{Type: t}) + "/"
|
||||
|
||||
listresp := be.client.ListObjects(be.bucketname, prefix, true, done)
|
||||
|
||||
go func() {
|
||||
defer close(ch)
|
||||
for obj := range listresp {
|
||||
m := strings.TrimPrefix(obj.Key, prefix)
|
||||
if m == "" {
|
||||
continue
|
||||
cursor := stow.CursorStart
|
||||
for {
|
||||
items, next, err := be.container.Items(prefix, cursor, 50)
|
||||
if err != nil {
|
||||
debug.Log("Items(%v, %v) -> err %v", prefix, cursor, err)
|
||||
return
|
||||
}
|
||||
|
||||
select {
|
||||
case ch <- m:
|
||||
case <-done:
|
||||
for _, item := range items {
|
||||
m := strings.TrimPrefix(item.ID(), prefix)
|
||||
if m == "" {
|
||||
continue
|
||||
}
|
||||
select {
|
||||
case ch <- m:
|
||||
case <-done:
|
||||
return
|
||||
}
|
||||
}
|
||||
cursor = next
|
||||
if stow.IsCursorEnd(cursor) {
|
||||
return
|
||||
}
|
||||
}
|
||||
|
|
|
@ -8,6 +8,7 @@ import (
|
|||
"restic/backend/rest"
|
||||
"restic/backend/s3"
|
||||
"restic/backend/sftp"
|
||||
"restic/backend/stow"
|
||||
)
|
||||
|
||||
// Location specifies the location of a repository, including the method of
|
||||
|
@ -29,6 +30,9 @@ var parsers = []parser{
|
|||
{"sftp", sftp.ParseConfig},
|
||||
{"s3", s3.ParseConfig},
|
||||
{"rest", rest.ParseConfig},
|
||||
{"azure", stow.ParseConfig},
|
||||
{"gs", stow.ParseConfig},
|
||||
{"aws", stow.ParseConfig},
|
||||
}
|
||||
|
||||
// Parse extracts repository location information from the string s. If s
|
||||
|
|
Loading…
Add table
Reference in a new issue