1d33874951
Go 1.13 and up enforce import paths to be versioned if a project contains a go.mod and has released v2 or up. The current v2.x branches (and releases) do not yet have a go.mod, and therefore are still allowed to be imported with a non-versioned import path (go modules add a `+incompatible` annotation in that case). However, now that this project has a `go.mod` file, incompatible import paths will not be accepted by go modules, and attempting to use code from this repository will fail. This patch uses `v3` for the import-paths (not `v2`), because changing import paths itself is a breaking change, which means that the next release should increment the "major" version to comply with SemVer (as go modules dictate). Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
39 lines
1.3 KiB
Go
39 lines
1.3 KiB
Go
package storagemiddleware
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import (
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"fmt"
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storagedriver "github.com/distribution/distribution/v3/registry/storage/driver"
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)
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// InitFunc is the type of a StorageMiddleware factory function and is
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// used to register the constructor for different StorageMiddleware backends.
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type InitFunc func(storageDriver storagedriver.StorageDriver, options map[string]interface{}) (storagedriver.StorageDriver, error)
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var storageMiddlewares map[string]InitFunc
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// Register is used to register an InitFunc for
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// a StorageMiddleware backend with the given name.
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func Register(name string, initFunc InitFunc) error {
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if storageMiddlewares == nil {
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storageMiddlewares = make(map[string]InitFunc)
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}
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if _, exists := storageMiddlewares[name]; exists {
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return fmt.Errorf("name already registered: %s", name)
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}
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storageMiddlewares[name] = initFunc
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return nil
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}
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// Get constructs a StorageMiddleware with the given options using the named backend.
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func Get(name string, options map[string]interface{}, storageDriver storagedriver.StorageDriver) (storagedriver.StorageDriver, error) {
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if storageMiddlewares != nil {
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if initFunc, exists := storageMiddlewares[name]; exists {
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return initFunc(storageDriver, options)
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}
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}
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return nil, fmt.Errorf("no storage middleware registered with name: %s", name)
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}
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