overdue
This commit is contained in:
bel
991
.rclone_repo/backend/googlecloudstorage/googlecloudstorage.go
Executable file
991
.rclone_repo/backend/googlecloudstorage/googlecloudstorage.go
Executable file
@@ -0,0 +1,991 @@
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// Package googlecloudstorage provides an interface to Google Cloud Storage
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package googlecloudstorage
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/*
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Notes
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Can't set Updated but can set Metadata on object creation
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Patch needs full_control not just read_write
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FIXME Patch/Delete/Get isn't working with files with spaces in - giving 404 error
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- https://code.google.com/p/google-api-go-client/issues/detail?id=64
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*/
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import (
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"encoding/base64"
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"encoding/hex"
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"fmt"
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"io"
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"io/ioutil"
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"log"
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"net/http"
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"os"
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"path"
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"regexp"
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"strings"
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"sync"
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"time"
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"github.com/ncw/rclone/fs"
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"github.com/ncw/rclone/fs/config"
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"github.com/ncw/rclone/fs/config/configmap"
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"github.com/ncw/rclone/fs/config/configstruct"
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"github.com/ncw/rclone/fs/config/obscure"
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"github.com/ncw/rclone/fs/fserrors"
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"github.com/ncw/rclone/fs/fshttp"
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"github.com/ncw/rclone/fs/hash"
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"github.com/ncw/rclone/fs/walk"
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"github.com/ncw/rclone/lib/oauthutil"
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"github.com/ncw/rclone/lib/pacer"
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"github.com/pkg/errors"
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"golang.org/x/oauth2"
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"golang.org/x/oauth2/google"
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"google.golang.org/api/googleapi"
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storage "google.golang.org/api/storage/v1"
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)
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const (
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rcloneClientID = "202264815644.apps.googleusercontent.com"
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rcloneEncryptedClientSecret = "Uj7C9jGfb9gmeaV70Lh058cNkWvepr-Es9sBm0zdgil7JaOWF1VySw"
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timeFormatIn = time.RFC3339
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timeFormatOut = "2006-01-02T15:04:05.000000000Z07:00"
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metaMtime = "mtime" // key to store mtime under in metadata
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listChunks = 1000 // chunk size to read directory listings
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minSleep = 10 * time.Millisecond
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)
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var (
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// Description of how to auth for this app
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storageConfig = &oauth2.Config{
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Scopes: []string{storage.DevstorageFullControlScope},
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Endpoint: google.Endpoint,
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ClientID: rcloneClientID,
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ClientSecret: obscure.MustReveal(rcloneEncryptedClientSecret),
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RedirectURL: oauthutil.TitleBarRedirectURL,
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}
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)
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// Register with Fs
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func init() {
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fs.Register(&fs.RegInfo{
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Name: "google cloud storage",
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Prefix: "gcs",
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Description: "Google Cloud Storage (this is not Google Drive)",
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NewFs: NewFs,
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Config: func(name string, m configmap.Mapper) {
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saFile, _ := m.Get("service_account_file")
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saCreds, _ := m.Get("service_account_credentials")
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if saFile != "" || saCreds != "" {
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return
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}
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err := oauthutil.Config("google cloud storage", name, m, storageConfig)
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if err != nil {
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log.Fatalf("Failed to configure token: %v", err)
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}
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},
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Options: []fs.Option{{
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Name: config.ConfigClientID,
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Help: "Google Application Client Id\nLeave blank normally.",
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}, {
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Name: config.ConfigClientSecret,
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Help: "Google Application Client Secret\nLeave blank normally.",
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}, {
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Name: "project_number",
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Help: "Project number.\nOptional - needed only for list/create/delete buckets - see your developer console.",
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}, {
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Name: "service_account_file",
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Help: "Service Account Credentials JSON file path\nLeave blank normally.\nNeeded only if you want use SA instead of interactive login.",
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}, {
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Name: "service_account_credentials",
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Help: "Service Account Credentials JSON blob\nLeave blank normally.\nNeeded only if you want use SA instead of interactive login.",
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Hide: fs.OptionHideBoth,
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}, {
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Name: "object_acl",
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Help: "Access Control List for new objects.",
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Examples: []fs.OptionExample{{
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Value: "authenticatedRead",
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Help: "Object owner gets OWNER access, and all Authenticated Users get READER access.",
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}, {
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Value: "bucketOwnerFullControl",
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Help: "Object owner gets OWNER access, and project team owners get OWNER access.",
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}, {
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Value: "bucketOwnerRead",
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Help: "Object owner gets OWNER access, and project team owners get READER access.",
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}, {
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Value: "private",
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Help: "Object owner gets OWNER access [default if left blank].",
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}, {
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Value: "projectPrivate",
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Help: "Object owner gets OWNER access, and project team members get access according to their roles.",
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}, {
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Value: "publicRead",
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Help: "Object owner gets OWNER access, and all Users get READER access.",
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}},
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}, {
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Name: "bucket_acl",
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Help: "Access Control List for new buckets.",
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Examples: []fs.OptionExample{{
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Value: "authenticatedRead",
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Help: "Project team owners get OWNER access, and all Authenticated Users get READER access.",
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}, {
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Value: "private",
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Help: "Project team owners get OWNER access [default if left blank].",
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}, {
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Value: "projectPrivate",
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Help: "Project team members get access according to their roles.",
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}, {
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Value: "publicRead",
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Help: "Project team owners get OWNER access, and all Users get READER access.",
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}, {
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Value: "publicReadWrite",
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Help: "Project team owners get OWNER access, and all Users get WRITER access.",
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}},
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}, {
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Name: "location",
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Help: "Location for the newly created buckets.",
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Examples: []fs.OptionExample{{
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Value: "",
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Help: "Empty for default location (US).",
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}, {
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Value: "asia",
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Help: "Multi-regional location for Asia.",
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}, {
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Value: "eu",
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Help: "Multi-regional location for Europe.",
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}, {
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Value: "us",
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Help: "Multi-regional location for United States.",
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}, {
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Value: "asia-east1",
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Help: "Taiwan.",
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}, {
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Value: "asia-northeast1",
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Help: "Tokyo.",
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}, {
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Value: "asia-southeast1",
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Help: "Singapore.",
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}, {
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||||
Value: "australia-southeast1",
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Help: "Sydney.",
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||||
}, {
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||||
Value: "europe-west1",
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||||
Help: "Belgium.",
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||||
}, {
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||||
Value: "europe-west2",
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Help: "London.",
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||||
}, {
|
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Value: "us-central1",
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Help: "Iowa.",
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||||
}, {
|
||||
Value: "us-east1",
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Help: "South Carolina.",
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}, {
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Value: "us-east4",
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Help: "Northern Virginia.",
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||||
}, {
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||||
Value: "us-west1",
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Help: "Oregon.",
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||||
}},
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||||
}, {
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Name: "storage_class",
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Help: "The storage class to use when storing objects in Google Cloud Storage.",
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Examples: []fs.OptionExample{{
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Value: "",
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Help: "Default",
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}, {
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||||
Value: "MULTI_REGIONAL",
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Help: "Multi-regional storage class",
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}, {
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Value: "REGIONAL",
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Help: "Regional storage class",
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}, {
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Value: "NEARLINE",
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Help: "Nearline storage class",
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}, {
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Value: "COLDLINE",
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Help: "Coldline storage class",
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||||
}, {
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Value: "DURABLE_REDUCED_AVAILABILITY",
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||||
Help: "Durable reduced availability storage class",
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||||
}},
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||||
}},
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||||
})
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||||
}
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||||
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// Options defines the configuration for this backend
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type Options struct {
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ProjectNumber string `config:"project_number"`
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ServiceAccountFile string `config:"service_account_file"`
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ServiceAccountCredentials string `config:"service_account_credentials"`
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ObjectACL string `config:"object_acl"`
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BucketACL string `config:"bucket_acl"`
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Location string `config:"location"`
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StorageClass string `config:"storage_class"`
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}
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||||
|
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// Fs represents a remote storage server
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type Fs struct {
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name string // name of this remote
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root string // the path we are working on if any
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opt Options // parsed options
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features *fs.Features // optional features
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svc *storage.Service // the connection to the storage server
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client *http.Client // authorized client
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bucket string // the bucket we are working on
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bucketOKMu sync.Mutex // mutex to protect bucket OK
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bucketOK bool // true if we have created the bucket
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pacer *pacer.Pacer // To pace the API calls
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}
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|
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// Object describes a storage object
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//
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// Will definitely have info but maybe not meta
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type Object struct {
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fs *Fs // what this object is part of
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remote string // The remote path
|
||||
url string // download path
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md5sum string // The MD5Sum of the object
|
||||
bytes int64 // Bytes in the object
|
||||
modTime time.Time // Modified time of the object
|
||||
mimeType string
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||||
}
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||||
|
||||
// ------------------------------------------------------------
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||||
|
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// Name of the remote (as passed into NewFs)
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func (f *Fs) Name() string {
|
||||
return f.name
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||||
}
|
||||
|
||||
// Root of the remote (as passed into NewFs)
|
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func (f *Fs) Root() string {
|
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if f.root == "" {
|
||||
return f.bucket
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||||
}
|
||||
return f.bucket + "/" + f.root
|
||||
}
|
||||
|
||||
// String converts this Fs to a string
|
||||
func (f *Fs) String() string {
|
||||
if f.root == "" {
|
||||
return fmt.Sprintf("Storage bucket %s", f.bucket)
|
||||
}
|
||||
return fmt.Sprintf("Storage bucket %s path %s", f.bucket, f.root)
|
||||
}
|
||||
|
||||
// Features returns the optional features of this Fs
|
||||
func (f *Fs) Features() *fs.Features {
|
||||
return f.features
|
||||
}
|
||||
|
||||
// shouldRetry determines whehter a given err rates being retried
|
||||
func shouldRetry(err error) (again bool, errOut error) {
|
||||
again = false
|
||||
if err != nil {
|
||||
if fserrors.ShouldRetry(err) {
|
||||
again = true
|
||||
} else {
|
||||
switch gerr := err.(type) {
|
||||
case *googleapi.Error:
|
||||
if gerr.Code >= 500 && gerr.Code < 600 {
|
||||
// All 5xx errors should be retried
|
||||
again = true
|
||||
} else if len(gerr.Errors) > 0 {
|
||||
reason := gerr.Errors[0].Reason
|
||||
if reason == "rateLimitExceeded" || reason == "userRateLimitExceeded" {
|
||||
again = true
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
return again, err
|
||||
}
|
||||
|
||||
// Pattern to match a storage path
|
||||
var matcher = regexp.MustCompile(`^([^/]*)(.*)$`)
|
||||
|
||||
// parseParse parses a storage 'url'
|
||||
func parsePath(path string) (bucket, directory string, err error) {
|
||||
parts := matcher.FindStringSubmatch(path)
|
||||
if parts == nil {
|
||||
err = errors.Errorf("couldn't find bucket in storage path %q", path)
|
||||
} else {
|
||||
bucket, directory = parts[1], parts[2]
|
||||
directory = strings.Trim(directory, "/")
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func getServiceAccountClient(credentialsData []byte) (*http.Client, error) {
|
||||
conf, err := google.JWTConfigFromJSON(credentialsData, storageConfig.Scopes...)
|
||||
if err != nil {
|
||||
return nil, errors.Wrap(err, "error processing credentials")
|
||||
}
|
||||
ctxWithSpecialClient := oauthutil.Context(fshttp.NewClient(fs.Config))
|
||||
return oauth2.NewClient(ctxWithSpecialClient, conf.TokenSource(ctxWithSpecialClient)), nil
|
||||
}
|
||||
|
||||
// NewFs contstructs an Fs from the path, bucket:path
|
||||
func NewFs(name, root string, m configmap.Mapper) (fs.Fs, error) {
|
||||
var oAuthClient *http.Client
|
||||
|
||||
// Parse config into Options struct
|
||||
opt := new(Options)
|
||||
err := configstruct.Set(m, opt)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
if opt.ObjectACL == "" {
|
||||
opt.ObjectACL = "private"
|
||||
}
|
||||
if opt.BucketACL == "" {
|
||||
opt.BucketACL = "private"
|
||||
}
|
||||
|
||||
// try loading service account credentials from env variable, then from a file
|
||||
if opt.ServiceAccountCredentials != "" && opt.ServiceAccountFile != "" {
|
||||
loadedCreds, err := ioutil.ReadFile(os.ExpandEnv(opt.ServiceAccountFile))
|
||||
if err != nil {
|
||||
return nil, errors.Wrap(err, "error opening service account credentials file")
|
||||
}
|
||||
opt.ServiceAccountCredentials = string(loadedCreds)
|
||||
}
|
||||
if opt.ServiceAccountCredentials != "" {
|
||||
oAuthClient, err = getServiceAccountClient([]byte(opt.ServiceAccountCredentials))
|
||||
if err != nil {
|
||||
return nil, errors.Wrap(err, "failed configuring Google Cloud Storage Service Account")
|
||||
}
|
||||
} else {
|
||||
oAuthClient, _, err = oauthutil.NewClient(name, m, storageConfig)
|
||||
if err != nil {
|
||||
return nil, errors.Wrap(err, "failed to configure Google Cloud Storage")
|
||||
}
|
||||
}
|
||||
|
||||
bucket, directory, err := parsePath(root)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
f := &Fs{
|
||||
name: name,
|
||||
bucket: bucket,
|
||||
root: directory,
|
||||
opt: *opt,
|
||||
pacer: pacer.New().SetMinSleep(minSleep).SetPacer(pacer.GoogleDrivePacer),
|
||||
}
|
||||
f.features = (&fs.Features{
|
||||
ReadMimeType: true,
|
||||
WriteMimeType: true,
|
||||
BucketBased: true,
|
||||
}).Fill(f)
|
||||
|
||||
// Create a new authorized Drive client.
|
||||
f.client = oAuthClient
|
||||
f.svc, err = storage.New(f.client)
|
||||
if err != nil {
|
||||
return nil, errors.Wrap(err, "couldn't create Google Cloud Storage client")
|
||||
}
|
||||
|
||||
if f.root != "" {
|
||||
f.root += "/"
|
||||
// Check to see if the object exists
|
||||
err = f.pacer.Call(func() (bool, error) {
|
||||
_, err = f.svc.Objects.Get(bucket, directory).Do()
|
||||
return shouldRetry(err)
|
||||
})
|
||||
if err == nil {
|
||||
f.root = path.Dir(directory)
|
||||
if f.root == "." {
|
||||
f.root = ""
|
||||
} else {
|
||||
f.root += "/"
|
||||
}
|
||||
// return an error with an fs which points to the parent
|
||||
return f, fs.ErrorIsFile
|
||||
}
|
||||
}
|
||||
return f, nil
|
||||
}
|
||||
|
||||
// Return an Object from a path
|
||||
//
|
||||
// If it can't be found it returns the error fs.ErrorObjectNotFound.
|
||||
func (f *Fs) newObjectWithInfo(remote string, info *storage.Object) (fs.Object, error) {
|
||||
o := &Object{
|
||||
fs: f,
|
||||
remote: remote,
|
||||
}
|
||||
if info != nil {
|
||||
o.setMetaData(info)
|
||||
} else {
|
||||
err := o.readMetaData() // reads info and meta, returning an error
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
return o, nil
|
||||
}
|
||||
|
||||
// NewObject finds the Object at remote. If it can't be found
|
||||
// it returns the error fs.ErrorObjectNotFound.
|
||||
func (f *Fs) NewObject(remote string) (fs.Object, error) {
|
||||
return f.newObjectWithInfo(remote, nil)
|
||||
}
|
||||
|
||||
// listFn is called from list to handle an object.
|
||||
type listFn func(remote string, object *storage.Object, isDirectory bool) error
|
||||
|
||||
// list the objects into the function supplied
|
||||
//
|
||||
// dir is the starting directory, "" for root
|
||||
//
|
||||
// Set recurse to read sub directories
|
||||
func (f *Fs) list(dir string, recurse bool, fn listFn) (err error) {
|
||||
root := f.root
|
||||
rootLength := len(root)
|
||||
if dir != "" {
|
||||
root += dir + "/"
|
||||
}
|
||||
list := f.svc.Objects.List(f.bucket).Prefix(root).MaxResults(listChunks)
|
||||
if !recurse {
|
||||
list = list.Delimiter("/")
|
||||
}
|
||||
for {
|
||||
var objects *storage.Objects
|
||||
err = f.pacer.Call(func() (bool, error) {
|
||||
objects, err = list.Do()
|
||||
return shouldRetry(err)
|
||||
})
|
||||
if err != nil {
|
||||
if gErr, ok := err.(*googleapi.Error); ok {
|
||||
if gErr.Code == http.StatusNotFound {
|
||||
err = fs.ErrorDirNotFound
|
||||
}
|
||||
}
|
||||
return err
|
||||
}
|
||||
if !recurse {
|
||||
var object storage.Object
|
||||
for _, prefix := range objects.Prefixes {
|
||||
if !strings.HasSuffix(prefix, "/") {
|
||||
continue
|
||||
}
|
||||
err = fn(prefix[rootLength:len(prefix)-1], &object, true)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
}
|
||||
for _, object := range objects.Items {
|
||||
if !strings.HasPrefix(object.Name, root) {
|
||||
fs.Logf(f, "Odd name received %q", object.Name)
|
||||
continue
|
||||
}
|
||||
remote := object.Name[rootLength:]
|
||||
// is this a directory marker?
|
||||
if (strings.HasSuffix(remote, "/") || remote == "") && object.Size == 0 {
|
||||
if recurse && remote != "" {
|
||||
// add a directory in if --fast-list since will have no prefixes
|
||||
err = fn(remote[:len(remote)-1], object, true)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
continue // skip directory marker
|
||||
}
|
||||
err = fn(remote, object, false)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
if objects.NextPageToken == "" {
|
||||
break
|
||||
}
|
||||
list.PageToken(objects.NextPageToken)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// Convert a list item into a DirEntry
|
||||
func (f *Fs) itemToDirEntry(remote string, object *storage.Object, isDirectory bool) (fs.DirEntry, error) {
|
||||
if isDirectory {
|
||||
d := fs.NewDir(remote, time.Time{}).SetSize(int64(object.Size))
|
||||
return d, nil
|
||||
}
|
||||
o, err := f.newObjectWithInfo(remote, object)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return o, nil
|
||||
}
|
||||
|
||||
// mark the bucket as being OK
|
||||
func (f *Fs) markBucketOK() {
|
||||
if f.bucket != "" {
|
||||
f.bucketOKMu.Lock()
|
||||
f.bucketOK = true
|
||||
f.bucketOKMu.Unlock()
|
||||
}
|
||||
}
|
||||
|
||||
// listDir lists a single directory
|
||||
func (f *Fs) listDir(dir string) (entries fs.DirEntries, err error) {
|
||||
// List the objects
|
||||
err = f.list(dir, false, func(remote string, object *storage.Object, isDirectory bool) error {
|
||||
entry, err := f.itemToDirEntry(remote, object, isDirectory)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if entry != nil {
|
||||
entries = append(entries, entry)
|
||||
}
|
||||
return nil
|
||||
})
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
// bucket must be present if listing succeeded
|
||||
f.markBucketOK()
|
||||
return entries, err
|
||||
}
|
||||
|
||||
// listBuckets lists the buckets
|
||||
func (f *Fs) listBuckets(dir string) (entries fs.DirEntries, err error) {
|
||||
if dir != "" {
|
||||
return nil, fs.ErrorListBucketRequired
|
||||
}
|
||||
if f.opt.ProjectNumber == "" {
|
||||
return nil, errors.New("can't list buckets without project number")
|
||||
}
|
||||
listBuckets := f.svc.Buckets.List(f.opt.ProjectNumber).MaxResults(listChunks)
|
||||
for {
|
||||
var buckets *storage.Buckets
|
||||
err = f.pacer.Call(func() (bool, error) {
|
||||
buckets, err = listBuckets.Do()
|
||||
return shouldRetry(err)
|
||||
})
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
for _, bucket := range buckets.Items {
|
||||
d := fs.NewDir(bucket.Name, time.Time{})
|
||||
entries = append(entries, d)
|
||||
}
|
||||
if buckets.NextPageToken == "" {
|
||||
break
|
||||
}
|
||||
listBuckets.PageToken(buckets.NextPageToken)
|
||||
}
|
||||
return entries, nil
|
||||
}
|
||||
|
||||
// List the objects and directories in dir into entries. The
|
||||
// entries can be returned in any order but should be for a
|
||||
// complete directory.
|
||||
//
|
||||
// dir should be "" to list the root, and should not have
|
||||
// trailing slashes.
|
||||
//
|
||||
// This should return ErrDirNotFound if the directory isn't
|
||||
// found.
|
||||
func (f *Fs) List(dir string) (entries fs.DirEntries, err error) {
|
||||
if f.bucket == "" {
|
||||
return f.listBuckets(dir)
|
||||
}
|
||||
return f.listDir(dir)
|
||||
}
|
||||
|
||||
// ListR lists the objects and directories of the Fs starting
|
||||
// from dir recursively into out.
|
||||
//
|
||||
// dir should be "" to start from the root, and should not
|
||||
// have trailing slashes.
|
||||
//
|
||||
// This should return ErrDirNotFound if the directory isn't
|
||||
// found.
|
||||
//
|
||||
// It should call callback for each tranche of entries read.
|
||||
// These need not be returned in any particular order. If
|
||||
// callback returns an error then the listing will stop
|
||||
// immediately.
|
||||
//
|
||||
// Don't implement this unless you have a more efficient way
|
||||
// of listing recursively that doing a directory traversal.
|
||||
func (f *Fs) ListR(dir string, callback fs.ListRCallback) (err error) {
|
||||
if f.bucket == "" {
|
||||
return fs.ErrorListBucketRequired
|
||||
}
|
||||
list := walk.NewListRHelper(callback)
|
||||
err = f.list(dir, true, func(remote string, object *storage.Object, isDirectory bool) error {
|
||||
entry, err := f.itemToDirEntry(remote, object, isDirectory)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
return list.Add(entry)
|
||||
})
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
// bucket must be present if listing succeeded
|
||||
f.markBucketOK()
|
||||
return list.Flush()
|
||||
}
|
||||
|
||||
// Put the object into the bucket
|
||||
//
|
||||
// Copy the reader in to the new object which is returned
|
||||
//
|
||||
// The new object may have been created if an error is returned
|
||||
func (f *Fs) Put(in io.Reader, src fs.ObjectInfo, options ...fs.OpenOption) (fs.Object, error) {
|
||||
// Temporary Object under construction
|
||||
o := &Object{
|
||||
fs: f,
|
||||
remote: src.Remote(),
|
||||
}
|
||||
return o, o.Update(in, src, options...)
|
||||
}
|
||||
|
||||
// PutStream uploads to the remote path with the modTime given of indeterminate size
|
||||
func (f *Fs) PutStream(in io.Reader, src fs.ObjectInfo, options ...fs.OpenOption) (fs.Object, error) {
|
||||
return f.Put(in, src, options...)
|
||||
}
|
||||
|
||||
// Mkdir creates the bucket if it doesn't exist
|
||||
func (f *Fs) Mkdir(dir string) (err error) {
|
||||
f.bucketOKMu.Lock()
|
||||
defer f.bucketOKMu.Unlock()
|
||||
if f.bucketOK {
|
||||
return nil
|
||||
}
|
||||
// List something from the bucket to see if it exists. Doing it like this enables the use of a
|
||||
// service account that only has the "Storage Object Admin" role. See #2193 for details.
|
||||
|
||||
err = f.pacer.Call(func() (bool, error) {
|
||||
_, err = f.svc.Objects.List(f.bucket).MaxResults(1).Do()
|
||||
return shouldRetry(err)
|
||||
})
|
||||
if err == nil {
|
||||
// Bucket already exists
|
||||
f.bucketOK = true
|
||||
return nil
|
||||
} else if gErr, ok := err.(*googleapi.Error); ok {
|
||||
if gErr.Code != http.StatusNotFound {
|
||||
return errors.Wrap(err, "failed to get bucket")
|
||||
}
|
||||
} else {
|
||||
return errors.Wrap(err, "failed to get bucket")
|
||||
}
|
||||
|
||||
if f.opt.ProjectNumber == "" {
|
||||
return errors.New("can't make bucket without project number")
|
||||
}
|
||||
|
||||
bucket := storage.Bucket{
|
||||
Name: f.bucket,
|
||||
Location: f.opt.Location,
|
||||
StorageClass: f.opt.StorageClass,
|
||||
}
|
||||
err = f.pacer.Call(func() (bool, error) {
|
||||
_, err = f.svc.Buckets.Insert(f.opt.ProjectNumber, &bucket).PredefinedAcl(f.opt.BucketACL).Do()
|
||||
return shouldRetry(err)
|
||||
})
|
||||
if err == nil {
|
||||
f.bucketOK = true
|
||||
}
|
||||
return err
|
||||
}
|
||||
|
||||
// Rmdir deletes the bucket if the fs is at the root
|
||||
//
|
||||
// Returns an error if it isn't empty: Error 409: The bucket you tried
|
||||
// to delete was not empty.
|
||||
func (f *Fs) Rmdir(dir string) (err error) {
|
||||
f.bucketOKMu.Lock()
|
||||
defer f.bucketOKMu.Unlock()
|
||||
if f.root != "" || dir != "" {
|
||||
return nil
|
||||
}
|
||||
err = f.pacer.Call(func() (bool, error) {
|
||||
err = f.svc.Buckets.Delete(f.bucket).Do()
|
||||
return shouldRetry(err)
|
||||
})
|
||||
if err == nil {
|
||||
f.bucketOK = false
|
||||
}
|
||||
return err
|
||||
}
|
||||
|
||||
// Precision returns the precision
|
||||
func (f *Fs) Precision() time.Duration {
|
||||
return time.Nanosecond
|
||||
}
|
||||
|
||||
// Copy src to this remote using server side copy operations.
|
||||
//
|
||||
// This is stored with the remote path given
|
||||
//
|
||||
// It returns the destination Object and a possible error
|
||||
//
|
||||
// Will only be called if src.Fs().Name() == f.Name()
|
||||
//
|
||||
// If it isn't possible then return fs.ErrorCantCopy
|
||||
func (f *Fs) Copy(src fs.Object, remote string) (fs.Object, error) {
|
||||
err := f.Mkdir("")
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
srcObj, ok := src.(*Object)
|
||||
if !ok {
|
||||
fs.Debugf(src, "Can't copy - not same remote type")
|
||||
return nil, fs.ErrorCantCopy
|
||||
}
|
||||
|
||||
// Temporary Object under construction
|
||||
dstObj := &Object{
|
||||
fs: f,
|
||||
remote: remote,
|
||||
}
|
||||
|
||||
srcBucket := srcObj.fs.bucket
|
||||
srcObject := srcObj.fs.root + srcObj.remote
|
||||
dstBucket := f.bucket
|
||||
dstObject := f.root + remote
|
||||
var newObject *storage.Object
|
||||
err = f.pacer.Call(func() (bool, error) {
|
||||
newObject, err = f.svc.Objects.Copy(srcBucket, srcObject, dstBucket, dstObject, nil).Do()
|
||||
return shouldRetry(err)
|
||||
})
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
// Set the metadata for the new object while we have it
|
||||
dstObj.setMetaData(newObject)
|
||||
return dstObj, nil
|
||||
}
|
||||
|
||||
// Hashes returns the supported hash sets.
|
||||
func (f *Fs) Hashes() hash.Set {
|
||||
return hash.Set(hash.MD5)
|
||||
}
|
||||
|
||||
// ------------------------------------------------------------
|
||||
|
||||
// Fs returns the parent Fs
|
||||
func (o *Object) Fs() fs.Info {
|
||||
return o.fs
|
||||
}
|
||||
|
||||
// Return a string version
|
||||
func (o *Object) String() string {
|
||||
if o == nil {
|
||||
return "<nil>"
|
||||
}
|
||||
return o.remote
|
||||
}
|
||||
|
||||
// Remote returns the remote path
|
||||
func (o *Object) Remote() string {
|
||||
return o.remote
|
||||
}
|
||||
|
||||
// Hash returns the Md5sum of an object returning a lowercase hex string
|
||||
func (o *Object) Hash(t hash.Type) (string, error) {
|
||||
if t != hash.MD5 {
|
||||
return "", hash.ErrUnsupported
|
||||
}
|
||||
return o.md5sum, nil
|
||||
}
|
||||
|
||||
// Size returns the size of an object in bytes
|
||||
func (o *Object) Size() int64 {
|
||||
return o.bytes
|
||||
}
|
||||
|
||||
// setMetaData sets the fs data from a storage.Object
|
||||
func (o *Object) setMetaData(info *storage.Object) {
|
||||
o.url = info.MediaLink
|
||||
o.bytes = int64(info.Size)
|
||||
o.mimeType = info.ContentType
|
||||
|
||||
// Read md5sum
|
||||
md5sumData, err := base64.StdEncoding.DecodeString(info.Md5Hash)
|
||||
if err != nil {
|
||||
fs.Logf(o, "Bad MD5 decode: %v", err)
|
||||
} else {
|
||||
o.md5sum = hex.EncodeToString(md5sumData)
|
||||
}
|
||||
|
||||
// read mtime out of metadata if available
|
||||
mtimeString, ok := info.Metadata[metaMtime]
|
||||
if ok {
|
||||
modTime, err := time.Parse(timeFormatIn, mtimeString)
|
||||
if err == nil {
|
||||
o.modTime = modTime
|
||||
return
|
||||
}
|
||||
fs.Debugf(o, "Failed to read mtime from metadata: %s", err)
|
||||
}
|
||||
|
||||
// Fallback to the Updated time
|
||||
modTime, err := time.Parse(timeFormatIn, info.Updated)
|
||||
if err != nil {
|
||||
fs.Logf(o, "Bad time decode: %v", err)
|
||||
} else {
|
||||
o.modTime = modTime
|
||||
}
|
||||
}
|
||||
|
||||
// readMetaData gets the metadata if it hasn't already been fetched
|
||||
//
|
||||
// it also sets the info
|
||||
func (o *Object) readMetaData() (err error) {
|
||||
if !o.modTime.IsZero() {
|
||||
return nil
|
||||
}
|
||||
var object *storage.Object
|
||||
err = o.fs.pacer.Call(func() (bool, error) {
|
||||
object, err = o.fs.svc.Objects.Get(o.fs.bucket, o.fs.root+o.remote).Do()
|
||||
return shouldRetry(err)
|
||||
})
|
||||
if err != nil {
|
||||
if gErr, ok := err.(*googleapi.Error); ok {
|
||||
if gErr.Code == http.StatusNotFound {
|
||||
return fs.ErrorObjectNotFound
|
||||
}
|
||||
}
|
||||
return err
|
||||
}
|
||||
o.setMetaData(object)
|
||||
return nil
|
||||
}
|
||||
|
||||
// ModTime returns the modification time of the object
|
||||
//
|
||||
// It attempts to read the objects mtime and if that isn't present the
|
||||
// LastModified returned in the http headers
|
||||
func (o *Object) ModTime() time.Time {
|
||||
err := o.readMetaData()
|
||||
if err != nil {
|
||||
// fs.Logf(o, "Failed to read metadata: %v", err)
|
||||
return time.Now()
|
||||
}
|
||||
return o.modTime
|
||||
}
|
||||
|
||||
// Returns metadata for an object
|
||||
func metadataFromModTime(modTime time.Time) map[string]string {
|
||||
metadata := make(map[string]string, 1)
|
||||
metadata[metaMtime] = modTime.Format(timeFormatOut)
|
||||
return metadata
|
||||
}
|
||||
|
||||
// SetModTime sets the modification time of the local fs object
|
||||
func (o *Object) SetModTime(modTime time.Time) (err error) {
|
||||
// This only adds metadata so will perserve other metadata
|
||||
object := storage.Object{
|
||||
Bucket: o.fs.bucket,
|
||||
Name: o.fs.root + o.remote,
|
||||
Metadata: metadataFromModTime(modTime),
|
||||
}
|
||||
var newObject *storage.Object
|
||||
err = o.fs.pacer.Call(func() (bool, error) {
|
||||
newObject, err = o.fs.svc.Objects.Patch(o.fs.bucket, o.fs.root+o.remote, &object).Do()
|
||||
return shouldRetry(err)
|
||||
})
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
o.setMetaData(newObject)
|
||||
return nil
|
||||
}
|
||||
|
||||
// Storable returns a boolean as to whether this object is storable
|
||||
func (o *Object) Storable() bool {
|
||||
return true
|
||||
}
|
||||
|
||||
// Open an object for read
|
||||
func (o *Object) Open(options ...fs.OpenOption) (in io.ReadCloser, err error) {
|
||||
req, err := http.NewRequest("GET", o.url, nil)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
fs.OpenOptionAddHTTPHeaders(req.Header, options)
|
||||
var res *http.Response
|
||||
err = o.fs.pacer.Call(func() (bool, error) {
|
||||
res, err = o.fs.client.Do(req)
|
||||
if err == nil {
|
||||
err = googleapi.CheckResponse(res)
|
||||
if err != nil {
|
||||
_ = res.Body.Close() // ignore error
|
||||
}
|
||||
}
|
||||
return shouldRetry(err)
|
||||
})
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
_, isRanging := req.Header["Range"]
|
||||
if !(res.StatusCode == http.StatusOK || (isRanging && res.StatusCode == http.StatusPartialContent)) {
|
||||
_ = res.Body.Close() // ignore error
|
||||
return nil, errors.Errorf("bad response: %d: %s", res.StatusCode, res.Status)
|
||||
}
|
||||
return res.Body, nil
|
||||
}
|
||||
|
||||
// Update the object with the contents of the io.Reader, modTime and size
|
||||
//
|
||||
// The new object may have been created if an error is returned
|
||||
func (o *Object) Update(in io.Reader, src fs.ObjectInfo, options ...fs.OpenOption) error {
|
||||
err := o.fs.Mkdir("")
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
modTime := src.ModTime()
|
||||
|
||||
object := storage.Object{
|
||||
Bucket: o.fs.bucket,
|
||||
Name: o.fs.root + o.remote,
|
||||
ContentType: fs.MimeType(src),
|
||||
Updated: modTime.Format(timeFormatOut), // Doesn't get set
|
||||
Metadata: metadataFromModTime(modTime),
|
||||
}
|
||||
var newObject *storage.Object
|
||||
err = o.fs.pacer.CallNoRetry(func() (bool, error) {
|
||||
newObject, err = o.fs.svc.Objects.Insert(o.fs.bucket, &object).Media(in, googleapi.ContentType("")).Name(object.Name).PredefinedAcl(o.fs.opt.ObjectACL).Do()
|
||||
return shouldRetry(err)
|
||||
})
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
// Set the metadata for the new object while we have it
|
||||
o.setMetaData(newObject)
|
||||
return nil
|
||||
}
|
||||
|
||||
// Remove an object
|
||||
func (o *Object) Remove() (err error) {
|
||||
err = o.fs.pacer.Call(func() (bool, error) {
|
||||
err = o.fs.svc.Objects.Delete(o.fs.bucket, o.fs.root+o.remote).Do()
|
||||
return shouldRetry(err)
|
||||
})
|
||||
return err
|
||||
}
|
||||
|
||||
// MimeType of an Object if known, "" otherwise
|
||||
func (o *Object) MimeType() string {
|
||||
return o.mimeType
|
||||
}
|
||||
|
||||
// Check the interfaces are satisfied
|
||||
var (
|
||||
_ fs.Fs = &Fs{}
|
||||
_ fs.Copier = &Fs{}
|
||||
_ fs.PutStreamer = &Fs{}
|
||||
_ fs.ListRer = &Fs{}
|
||||
_ fs.Object = &Object{}
|
||||
_ fs.MimeTyper = &Object{}
|
||||
)
|
||||
Reference in New Issue
Block a user