forked from TrueCloudLab/restic
47 lines
1.5 KiB
Go
47 lines
1.5 KiB
Go
package restic
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import (
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"context"
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"io"
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)
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// Backend is used to store and access data.
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type Backend interface {
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// Location returns a string that describes the type and location of the
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// repository.
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Location() string
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// Test a boolean value whether a File with the name and type exists.
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Test(ctx context.Context, h Handle) (bool, error)
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// Remove removes a File with type t and name.
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Remove(ctx context.Context, h Handle) error
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// Close the backend
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Close() error
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// Save stores the data in the backend under the given handle.
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Save(ctx context.Context, h Handle, rd io.Reader) error
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// Load returns a reader that yields the contents of the file at h at the
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// given offset. If length is larger than zero, only a portion of the file
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// is returned. rd must be closed after use. If an error is returned, the
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// ReadCloser must be nil.
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Load(ctx context.Context, h Handle, length int, offset int64) (io.ReadCloser, error)
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// Stat returns information about the File identified by h.
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Stat(ctx context.Context, h Handle) (FileInfo, error)
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// List returns a channel that yields all names of files of type t in an
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// arbitrary order. A goroutine is started for this, which is stopped when
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// ctx is cancelled.
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List(ctx context.Context, t FileType) <-chan string
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// IsNotExist returns true if the error was caused by a non-existing file
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// in the backend.
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IsNotExist(err error) bool
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}
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// FileInfo is returned by Stat() and contains information about a file in the
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// backend.
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type FileInfo struct{ Size int64 }
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