oss

package module
v2.4.0 Latest Latest
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 Go to latest Published: Sep 13, 2021 License: Apache-2.0 Imports: 16 Imported by: 1

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go-services-oss

Aliyun Object Storage service support for go-storage.

Install

go get github.com/beyondstorage/go-service-oss/v2

Usage

import (
	"log"

	_ "github.com/beyondstorage/go-service-oss/v2"
	"github.com/beyondstorage/go-storage/v4/services"
)

func main() {
	store, err := services.NewStoragerFromString("oss://bucket_name/path/to/workdir?credential=hmac:<access_key>:<secret_key>&endpoint=https:<location>.aliyuncs.com")
	if err != nil {
		log.Fatal(err)
	}

	// Write data from io.Reader into hello.txt
	n, err := store.Write("hello.txt", r, length)
}

Documentation

Overview

Package oss provided support for Aliyun Object Storage Service (https://cn.aliyun.com/product/oss)

Code generated by go generate via cmd/definitions; DO NOT EDIT.

Index

Constants

View Source 
const (

	// ref: https://www.alibabacloud.com/help/doc-detail/51374.htm
	StorageClassStandard = "STANDARD"
	StorageClassIA       = "IA"
	StorageClassArchive  = "Archive"
)

All available storage classes are listed here.

View Source 
const (
	ServerSideEncryptionAES256 = "AES256"
	ServerSideEncryptionKMS    = "KMS"
	ServerSideEncryptionSM4    = "SM4"

	ServerSideDataEncryptionSM4 = "SM4"
)

All available encryption algorithms are listed here.

View Source 
const Type = "oss"

Type is the type for oss

Variables

This section is empty.

Functions

func New 

func New(pairs ...typ.Pair) (typ.Servicer, typ.Storager, error)

New will create both Servicer and Storager.

func NewServicer 

func NewServicer(pairs ...typ.Pair) (typ.Servicer, error)

NewServicer will create Servicer only.

func NewStorager 

func NewStorager(pairs ...typ.Pair) (typ.Storager, error)

NewStorager will create Storager only.

func WithDefaultServicePairs 

func WithDefaultServicePairs(v DefaultServicePairs) Pair

WithDefaultServicePairs will apply default_service_pairs value to Options.

DefaultServicePairs set default pairs for service actions

func WithDefaultStoragePairs 

func WithDefaultStoragePairs(v DefaultStoragePairs) Pair

WithDefaultStoragePairs will apply default_storage_pairs value to Options.

DefaultStoragePairs set default pairs for storager actions

func WithEnableVirtualDir added in v2.4.0 

func WithEnableVirtualDir() Pair

WithEnableVirtualDir will apply enable_virtual_dir value to Options.

VirtualDir virtual_dir feature is designed for a service that doesn't have native dir support but wants to provide simulated operations.

- If this feature is disabled (the default behavior), the service will behave like it doesn't have any dir support. - If this feature is enabled, the service will support simulated dir behavior in create_dir, create, list, delete, and so on.

This feature was introduced in GSP-109.

func WithServerSideDataEncryption 

func WithServerSideDataEncryption(v string) Pair

WithServerSideDataEncryption will apply server_side_data_encryption value to Options.

ServerSideDataEncryption specifies the encryption algorithm when server_side_encryption is KMS. Can only be set to SM4. If this is not set, AES256 will be used.

For Chinese users, refer to https://help.aliyun.com/document_detail/31871.html for details.

For global users, refer to https://www.alibabacloud.com/help/doc-detail/31871.htm for details, and double-check whether SM4 can be used.

func WithServerSideEncryption 

func WithServerSideEncryption(v string) Pair

WithServerSideEncryption will apply server_side_encryption value to Options.

ServerSideEncryption specifies the encryption algorithm. Can be AES256, KMS or SM4.

For Chinese users, refer to https://help.aliyun.com/document_detail/31871.html for details.

For global users, refer to https://www.alibabacloud.com/help/doc-detail/31871.htm for details, and double-check whether SM4 can be used.

func WithServerSideEncryptionKeyID 

func WithServerSideEncryptionKeyID(v string) Pair

WithServerSideEncryptionKeyID will apply server_side_encryption_key_id value to Options.

ServerSideEncryptionKeyID is the KMS-managed user master key. Only valid when server_side_encryption is KMS.

func WithServiceFeatures added in v2.1.0 

func WithServiceFeatures(v ServiceFeatures) Pair

WithServiceFeatures will apply service_features value to Options.

ServiceFeatures set service features

func WithStorageClass 

func WithStorageClass(v string) Pair

WithStorageClass will apply storage_class value to Options.

StorageClass

func WithStorageFeatures added in v2.1.0 

func WithStorageFeatures(v StorageFeatures) Pair

WithStorageFeatures will apply storage_features value to Options.

StorageFeatures set storage features

Types

type DefaultServicePairs 

type DefaultServicePairs struct {
	Create []Pair
	Delete []Pair
	Get    []Pair
	List   []Pair
}

DefaultServicePairs is default pairs for specific action

type DefaultStoragePairs 

type DefaultStoragePairs struct {
	CommitAppend      []Pair
	CompleteMultipart []Pair
	Create            []Pair
	CreateAppend      []Pair
	CreateDir         []Pair
	CreateLink        []Pair
	CreateMultipart   []Pair
	Delete            []Pair
	List              []Pair
	ListMultipart     []Pair
	Metadata          []Pair
	Read              []Pair
	Stat              []Pair
	Write             []Pair
	WriteAppend       []Pair
	WriteMultipart    []Pair
}

DefaultStoragePairs is default pairs for specific action

type ObjectSystemMetadata added in v2.1.0 

type ObjectSystemMetadata struct {
	// ServerSideEncryption
	ServerSideEncryption string
	// ServerSideEncryptionKeyID
	ServerSideEncryptionKeyID string
	// StorageClass
	StorageClass string
}

ObjectSystemMetadata stores system metadata for object.

func GetObjectSystemMetadata added in v2.1.0 

func GetObjectSystemMetadata(o *Object) ObjectSystemMetadata

GetObjectSystemMetadata will get ObjectSystemMetadata from Object.

- This function should not be called by service implementer. - The returning ObjectServiceMetadata is read only and should not be modified.

type Service 

type Service struct {
	typ.UnimplementedServicer
	// contains filtered or unexported fields
}

Service is the aliyun oss *Service config.

func (*Service) Create 

func (s *Service) Create(name string, pairs ...Pair) (store Storager, err error)

Create will create a new storager instance.

This function will create a context by default.

func (*Service) CreateWithContext 

func (s *Service) CreateWithContext(ctx context.Context, name string, pairs ...Pair) (store Storager, err error)

CreateWithContext will create a new storager instance.

func (*Service) Delete 

func (s *Service) Delete(name string, pairs ...Pair) (err error)

Delete will delete a storager instance.

This function will create a context by default.

func (*Service) DeleteWithContext 

func (s *Service) DeleteWithContext(ctx context.Context, name string, pairs ...Pair) (err error)

DeleteWithContext will delete a storager instance.

func (*Service) Get 

func (s *Service) Get(name string, pairs ...Pair) (store Storager, err error)

Get will get a valid storager instance for service.

This function will create a context by default.

func (*Service) GetWithContext 

func (s *Service) GetWithContext(ctx context.Context, name string, pairs ...Pair) (store Storager, err error)

GetWithContext will get a valid storager instance for service.

func (*Service) List 

func (s *Service) List(pairs ...Pair) (sti *StoragerIterator, err error)

List will list all storager instances under this service.

This function will create a context by default.

func (*Service) ListWithContext 

func (s *Service) ListWithContext(ctx context.Context, pairs ...Pair) (sti *StoragerIterator, err error)

ListWithContext will list all storager instances under this service.

func (*Service) String 

func (s *Service) String() string

String implements Servicer.String

type ServiceFeatures added in v2.1.0 

type ServiceFeatures struct {
}

type Storage 

type Storage struct {
	typ.UnimplementedStorager
	typ.UnimplementedAppender
	typ.UnimplementedMultiparter
	typ.UnimplementedDirer
	typ.UnimplementedLinker
	// contains filtered or unexported fields
}

Storage is the aliyun object storage service.

func (*Storage) CommitAppend 

func (s *Storage) CommitAppend(o *Object, pairs ...Pair) (err error)

CommitAppend will commit and finish an append process.

This function will create a context by default.

func (*Storage) CommitAppendWithContext 

func (s *Storage) CommitAppendWithContext(ctx context.Context, o *Object, pairs ...Pair) (err error)

CommitAppendWithContext will commit and finish an append process.

func (*Storage) CompleteMultipart 

func (s *Storage) CompleteMultipart(o *Object, parts []*Part, pairs ...Pair) (err error)

CompleteMultipart will complete a multipart upload and construct an Object.

This function will create a context by default.

func (*Storage) CompleteMultipartWithContext 

func (s *Storage) CompleteMultipartWithContext(ctx context.Context, o *Object, parts []*Part, pairs ...Pair) (err error)

CompleteMultipartWithContext will complete a multipart upload and construct an Object.

func (*Storage) Create 

func (s *Storage) Create(path string, pairs ...Pair) (o *Object)

Create will create a new object without any api call.

## Behavior

- Create SHOULD NOT send any API call. - Create SHOULD accept ObjectMode pair as object mode.

This function will create a context by default.

func (*Storage) CreateAppend 

func (s *Storage) CreateAppend(path string, pairs ...Pair) (o *Object, err error)

CreateAppend will create an append object.

## Behavior

- CreateAppend SHOULD create an appendable object with position 0 and size 0. - CreateAppend SHOULD NOT return an error as the object exist.

  • Service SHOULD check and delete the object if exists.

This function will create a context by default.

func (*Storage) CreateAppendWithContext 

func (s *Storage) CreateAppendWithContext(ctx context.Context, path string, pairs ...Pair) (o *Object, err error)

CreateAppendWithContext will create an append object.

## Behavior

- CreateAppend SHOULD create an appendable object with position 0 and size 0. - CreateAppend SHOULD NOT return an error as the object exist.

  • Service SHOULD check and delete the object if exists.

func (*Storage) CreateDir added in v2.1.0 

func (s *Storage) CreateDir(path string, pairs ...Pair) (o *Object, err error)

CreateDir will create a new dir object.

This function will create a context by default.

func (*Storage) CreateDirWithContext added in v2.1.0 

func (s *Storage) CreateDirWithContext(ctx context.Context, path string, pairs ...Pair) (o *Object, err error)

CreateDirWithContext will create a new dir object. 

func (s *Storage) CreateLink(path string, target string, pairs ...Pair) (o *Object, err error)

CreateLink Will create a link object.

Behavior

- `path` and `target` COULD be relative or absolute path. - If `target` not exists, CreateLink will still create a link object to path. - If `path` exists:

  • If `path` is a symlink object, CreateLink will remove the symlink object and create a new link object to path.
  • If `path` is not a symlink object, CreateLink will return an ErrObjectModeInvalid error when the service does not support overwrite.

- A link object COULD be returned in `Stat` or `List`. - CreateLink COULD implement virtual_link feature when service without native support.

  • Users SHOULD enable this feature by themselves.

This function will create a context by default.

func (*Storage) CreateLinkWithContext added in v2.3.0 

func (s *Storage) CreateLinkWithContext(ctx context.Context, path string, target string, pairs ...Pair) (o *Object, err error)

CreateLinkWithContext Will create a link object.

Behavior

- `path` and `target` COULD be relative or absolute path. - If `target` not exists, CreateLink will still create a link object to path. - If `path` exists:

  • If `path` is a symlink object, CreateLink will remove the symlink object and create a new link object to path.
  • If `path` is not a symlink object, CreateLink will return an ErrObjectModeInvalid error when the service does not support overwrite.

- A link object COULD be returned in `Stat` or `List`. - CreateLink COULD implement virtual_link feature when service without native support.

  • Users SHOULD enable this feature by themselves.

func (*Storage) CreateMultipart 

func (s *Storage) CreateMultipart(path string, pairs ...Pair) (o *Object, err error)

CreateMultipart will create a new multipart.

## Behavior

- CreateMultipart SHOULD NOT return an error as the object exists.

This function will create a context by default.

func (*Storage) CreateMultipartWithContext 

func (s *Storage) CreateMultipartWithContext(ctx context.Context, path string, pairs ...Pair) (o *Object, err error)

CreateMultipartWithContext will create a new multipart.

## Behavior

- CreateMultipart SHOULD NOT return an error as the object exists.

func (*Storage) Delete 

func (s *Storage) Delete(path string, pairs ...Pair) (err error)

Delete will delete an object from service.

## Behavior

- Delete only delete one and only one object.

  • Service DON'T NEED to support remove all.
  • User NEED to implement remove_all by themself.

- Delete is idempotent.

  • Successful delete always return nil error.
  • Delete SHOULD never return `ObjectNotExist`
  • Delete DON'T NEED to check the object exist or not.

This function will create a context by default.

func (*Storage) DeleteWithContext 

func (s *Storage) DeleteWithContext(ctx context.Context, path string, pairs ...Pair) (err error)

DeleteWithContext will delete an object from service.

## Behavior

- Delete only delete one and only one object.

  • Service DON'T NEED to support remove all.
  • User NEED to implement remove_all by themself.

- Delete is idempotent.

  • Successful delete always return nil error.
  • Delete SHOULD never return `ObjectNotExist`
  • Delete DON'T NEED to check the object exist or not.

func (*Storage) List 

func (s *Storage) List(path string, pairs ...Pair) (oi *ObjectIterator, err error)

List will return list a specific path.

## Behavior

- Service SHOULD support default `ListMode`. - Service SHOULD implement `ListModeDir` without the check for `VirtualDir`. - Service DON'T NEED to `Stat` while in `List`.

This function will create a context by default.

func (*Storage) ListMultipart 

func (s *Storage) ListMultipart(o *Object, pairs ...Pair) (pi *PartIterator, err error)

ListMultipart will list parts belong to this multipart.

This function will create a context by default.

func (*Storage) ListMultipartWithContext 

func (s *Storage) ListMultipartWithContext(ctx context.Context, o *Object, pairs ...Pair) (pi *PartIterator, err error)

ListMultipartWithContext will list parts belong to this multipart.

func (*Storage) ListWithContext 

func (s *Storage) ListWithContext(ctx context.Context, path string, pairs ...Pair) (oi *ObjectIterator, err error)

ListWithContext will return list a specific path.

## Behavior

- Service SHOULD support default `ListMode`. - Service SHOULD implement `ListModeDir` without the check for `VirtualDir`. - Service DON'T NEED to `Stat` while in `List`.

func (*Storage) Metadata 

func (s *Storage) Metadata(pairs ...Pair) (meta *StorageMeta)

Metadata will return current storager metadata.

This function will create a context by default.

func (*Storage) Read 

func (s *Storage) Read(path string, w io.Writer, pairs ...Pair) (n int64, err error)

Read will read the file's data.

This function will create a context by default.

func (*Storage) ReadWithContext 

func (s *Storage) ReadWithContext(ctx context.Context, path string, w io.Writer, pairs ...Pair) (n int64, err error)

ReadWithContext will read the file's data.

func (*Storage) Stat 

func (s *Storage) Stat(path string, pairs ...Pair) (o *Object, err error)

Stat will stat a path to get info of an object.

## Behavior

- Stat SHOULD accept ObjectMode pair as hints.

  • Service COULD have different implementations for different object mode.
  • Service SHOULD check if returning ObjectMode is match

This function will create a context by default.

func (*Storage) StatWithContext 

func (s *Storage) StatWithContext(ctx context.Context, path string, pairs ...Pair) (o *Object, err error)

StatWithContext will stat a path to get info of an object.

## Behavior

- Stat SHOULD accept ObjectMode pair as hints.

  • Service COULD have different implementations for different object mode.
  • Service SHOULD check if returning ObjectMode is match

func (*Storage) String 

func (s *Storage) String() string

String implements Storager.String

func (*Storage) Write 

func (s *Storage) Write(path string, r io.Reader, size int64, pairs ...Pair) (n int64, err error)

Write will write data into a file.

## Behavior

- Write SHOULD NOT return an error as the object exist.

  • Service that has native support for `overwrite` doesn't NEED to check the object exists or not.
  • Service that doesn't have native support for `overwrite` SHOULD check and delete the object if exists.

- A successful write operation SHOULD be complete, which means the object's content and metadata should be the same as specified in write request.

This function will create a context by default.

func (*Storage) WriteAppend 

func (s *Storage) WriteAppend(o *Object, r io.Reader, size int64, pairs ...Pair) (n int64, err error)

WriteAppend will append content to an append object.

This function will create a context by default.

func (*Storage) WriteAppendWithContext 

func (s *Storage) WriteAppendWithContext(ctx context.Context, o *Object, r io.Reader, size int64, pairs ...Pair) (n int64, err error)

WriteAppendWithContext will append content to an append object.

func (*Storage) WriteMultipart 

func (s *Storage) WriteMultipart(o *Object, r io.Reader, size int64, index int, pairs ...Pair) (n int64, part *Part, err error)

WriteMultipart will write content to a multipart.

This function will create a context by default.

func (*Storage) WriteMultipartWithContext 

func (s *Storage) WriteMultipartWithContext(ctx context.Context, o *Object, r io.Reader, size int64, index int, pairs ...Pair) (n int64, part *Part, err error)

WriteMultipartWithContext will write content to a multipart.

func (*Storage) WriteWithContext 

func (s *Storage) WriteWithContext(ctx context.Context, path string, r io.Reader, size int64, pairs ...Pair) (n int64, err error)

WriteWithContext will write data into a file.

## Behavior

- Write SHOULD NOT return an error as the object exist.

  • Service that has native support for `overwrite` doesn't NEED to check the object exists or not.
  • Service that doesn't have native support for `overwrite` SHOULD check and delete the object if exists.

- A successful write operation SHOULD be complete, which means the object's content and metadata should be the same as specified in write request.

type StorageFeatures added in v2.1.0 

type StorageFeatures struct {
	// VirtualDir virtual_dir feature is designed for a service that doesn't have native dir support but wants to provide simulated operations.
	//
	// - If this feature is disabled (the default behavior), the service will behave like it doesn't have any dir support.
	// - If this feature is enabled, the service will support simulated dir behavior in create_dir, create, list, delete, and so on.
	//
	// This feature was introduced in GSP-109.
	VirtualDir bool
}

type StorageSystemMetadata added in v2.1.0 

type StorageSystemMetadata struct {
}

StorageSystemMetadata stores system metadata for storage meta.

func GetStorageSystemMetadata added in v2.1.0 

func GetStorageSystemMetadata(s *StorageMeta) StorageSystemMetadata

GetStorageSystemMetadata will get SystemMetadata from StorageMeta.

- The returning StorageSystemMetadata is read only and should not be modified.

Source Files

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