storage

Documentation

Overview

storage provides a high level interface for Google Cloud Storage

Index

• Constants
• Variables
• func FixPrefix(p string) string
• func NextPrefix(name string) string
• func SortObjects(objs []*storage.Object)
• func Sync(ctx context.Context, src, dst *Bucket) error
• type Bucket
  • func NewBucket(client *http.Client, bucketURL string) (*Bucket, error)
  • func (b *Bucket) Copy(ctx context.Context, src *storage.Object, dstName string) error
  • func (b *Bucket) Delete(ctx context.Context, objName string) error
  • func (b *Bucket) Fetch(ctx context.Context) error
  • func (b *Bucket) FetchPrefix(ctx context.Context, prefix string, recursive bool) error
  • func (b *Bucket) Len() int
  • func (b *Bucket) Name() string
  • func (b *Bucket) Object(objName string) *storage.Object
  • func (b *Bucket) Objects() []*storage.Object
  • func (b *Bucket) Prefix() string
  • func (b *Bucket) Prefixes() []string
  • func (b *Bucket) URL() *url.URL
  • func (b *Bucket) Upload(ctx context.Context, obj *storage.Object, media io.ReadSeeker) error
  • func (b *Bucket) WriteAlways(always bool)
  • func (b *Bucket) WriteDryRun(dryrun bool)
• type Error
  • func (e *Error) Error() string
• type Filter
• type ObjectSlice
  • func (objs ObjectSlice) Len() int
  • func (objs ObjectSlice) Less(i, j int) bool
  • func (objs ObjectSlice) Swap(i, j int)
• type SyncJob
  • func (sj *SyncJob) Delete(enable bool)
  • func (sj *SyncJob) DeleteFilter(f Filter)
  • func (sj *SyncJob) DestinationPrefix(p string)
  • func (sj *SyncJob) Do(ctx context.Context) error
  • func (sj *SyncJob) Recursive(enable bool)
  • func (sj *SyncJob) SourceFilter(f Filter)
  • func (sj *SyncJob) SourcePrefix(p string)

Examples

• NextPrefix

Constants

const MaxConcurrentRequests = 12

Arbitrary limit on the number of concurrent remote API requests.

Variables

var (
	UnknownScheme = errors.New("storage: URL missing gs:// scheme")
	UnknownBucket = errors.New("storage: URL missing bucket name")
)

Functions

func FixPrefix

func FixPrefix(p string) string

FixPrefix ensures non-empty paths end in a slash but never start with one.

func NextPrefix

func NextPrefix(name string) string

NextPrefix chops off the final component of an object name or prefix.

Example

fmt.Println(NextPrefix("foo/bar/baz"))
fmt.Println(NextPrefix("foo/bar/"))
fmt.Println(NextPrefix("foo/bar"))
fmt.Println(NextPrefix("foo/"))
fmt.Println(NextPrefix("foo"))
fmt.Println(NextPrefix(""))

Output:

foo/bar/
foo/
foo/

func SortObjects

func SortObjects(objs []*storage.Object)

SortObjects orders Objects by Name using natural sorting.

func Sync

func Sync(ctx context.Context, src, dst *Bucket) error

Types

type Bucket

type Bucket struct {
	// contains filtered or unexported fields
}

func NewBucket

func NewBucket(client *http.Client, bucketURL string) (*Bucket, error)

func (*Bucket) Copy

func (b *Bucket) Copy(ctx context.Context, src *storage.Object, dstName string) error

func (*Bucket) Delete

func (b *Bucket) Delete(ctx context.Context, objName string) error

func (*Bucket) Fetch

func (b *Bucket) Fetch(ctx context.Context) error

func (*Bucket) FetchPrefix

func (b *Bucket) FetchPrefix(ctx context.Context, prefix string, recursive bool) error

func (*Bucket) Len

func (b *Bucket) Len() int

func (*Bucket) Name

func (b *Bucket) Name() string

func (*Bucket) Object

func (b *Bucket) Object(objName string) *storage.Object

func (*Bucket) Objects

func (b *Bucket) Objects() []*storage.Object

func (*Bucket) Prefix

func (b *Bucket) Prefix() string

func (*Bucket) Prefixes

func (b *Bucket) Prefixes() []string

func (*Bucket) URL

func (b *Bucket) URL() *url.URL

func (*Bucket) Upload

func (b *Bucket) Upload(ctx context.Context, obj *storage.Object, media io.ReadSeeker) error

func (*Bucket) WriteAlways

func (b *Bucket) WriteAlways(always bool)

func (*Bucket) WriteDryRun

func (b *Bucket) WriteDryRun(dryrun bool)

type Error

type Error struct {
	Op  string
	URL string
	Err error
}

func (*Error) Error

func (e *Error) Error() string

type Filter

type Filter func(*gs.Object) bool

Filter is a type of function that returns true if an object should be included in a given operation or false if it should be excluded/ignored.

type ObjectSlice

type ObjectSlice []*storage.Object

ObjectSlice provides sort.Interface for natural sorting Objects by Name.

func (ObjectSlice) Len

func (objs ObjectSlice) Len() int

func (ObjectSlice) Less

func (objs ObjectSlice) Less(i, j int) bool

func (ObjectSlice) Swap

func (objs ObjectSlice) Swap(i, j int)

type SyncJob

type SyncJob struct {
	Source      *Bucket
	Destination *Bucket
	// contains filtered or unexported fields
}

func (*SyncJob) Delete

func (sj *SyncJob) Delete(enable bool)

Delete toggles deletion of extra objects from Destination.

func (*SyncJob) DeleteFilter

func (sj *SyncJob) DeleteFilter(f Filter)

DeleteFilter selects which objects may be pruned from Destination.

func (*SyncJob) DestinationPrefix

func (sj *SyncJob) DestinationPrefix(p string)

DestinationPrefix overrides the Destination bucket's default prefix.

func (*SyncJob) Do

func (sj *SyncJob) Do(ctx context.Context) error

func (*SyncJob) Recursive

func (sj *SyncJob) Recursive(enable bool)

Recursive toggles copying subdirectories from Source (the default).

func (*SyncJob) SourceFilter

func (sj *SyncJob) SourceFilter(f Filter)

SourceFilter selects which objects to copy from Source.

func (*SyncJob) SourcePrefix

func (sj *SyncJob) SourcePrefix(p string)

SourcePrefix overrides the Source bucket's default prefix.