55ef482c5a
Added error variables and error check methods to snapshots Signed-off-by: Derek McGowan <derek@mcgstyle.net> (github: dmcgowan)
45 lines
1.5 KiB
Go
45 lines
1.5 KiB
Go
package snapshot
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import "github.com/pkg/errors"
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var (
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// ErrSnapshotNotExist is returned when a snapshot cannot be found
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ErrSnapshotNotExist = errors.New("snapshot does not exist")
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// ErrSnapshotExist is returned when an operation to create a snapshot
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// encounters a snapshot with the same key
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ErrSnapshotExist = errors.New("snapshot already exists")
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// ErrSnapshotNotActive is returned when a request which requires an
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// active snapshot encounters a non-active snapshot.
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ErrSnapshotNotActive = errors.New("snapshot is not active")
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// ErrSnapshotNotCommitted is returned when a request which requires a
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// committed snapshot encounters a non-committed snapshot.
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ErrSnapshotNotCommitted = errors.New("snapshot is not committed")
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)
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// IsNotExist returns whether the error represents that a snapshot
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// was not found.
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func IsNotExist(err error) bool {
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return errors.Cause(err) == ErrSnapshotNotExist
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}
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// IsExist returns whether the error represents whether a snapshot
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// already exists using a provided key.
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func IsExist(err error) bool {
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return errors.Cause(err) == ErrSnapshotExist
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}
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// IsNotActive returns whether the error represents a request
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// for a non active snapshot when an active snapshot is expected.
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func IsNotActive(err error) bool {
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return errors.Cause(err) == ErrSnapshotNotActive
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}
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// IsNotCommitted returns whether the error represents a request
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// for a non committed snapshot when a committed snapshot is expected.
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func IsNotCommitted(err error) bool {
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return errors.Cause(err) == ErrSnapshotNotCommitted
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}
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