compose

type App interface {
	Name() string
	HasLayersMeta(arch string) bool
	GetBlobRuntimeSize(desc *ocispec.Descriptor, arch string, blockSize int64) int64
	GetComposeRoot() *TreeNode
}

type AppLoader interface {
	LoadAppTree(context.Context, BlobProvider, platforms.MatchComparer, string) (App, *AppTree, error)
}

type AppRef struct {
	Spec   reference.Spec
	Repo   string
	Name   string
	Tag    string
	Digest digest.Digest
}

type AppStore interface {
	BlobProvider
	ListApps(ctx context.Context) ([]*AppRef, error)
}

type AppTree TreeNode

type BlobInfo struct {
	Descriptor  *ocispec.Descriptor
	State       BlobState
	Type        BlobType
	StoreSize   int64
	RuntimeSize int64
}

type BlobProvider interface {
	GetReadCloser(ctx context.Context, opts ...SecureReadOptions) (io.ReadCloser, error)
}

type BlobState int

type BlobType string

type BlobsStatus map[digest.Digest]BlobInfo

type ErrBlobDigestMismatch struct {
	Expected   digest.Digest
	Calculated digest.Digest
}

type ErrBlobSizeLimitExceed struct {
	Limit int64
}

type ErrBlobSizeMismatch struct {
	Expected int64
	Read     int64
}

type ImageRef struct {
	reference.Spec
	Digest digest.Digest
}

type ImageRoot struct {
	specs.Versioned
	MediaType string          `json:"mediaType,omitempty"`
	Config    json.RawMessage `json:"config,omitempty"`
	Layers    json.RawMessage `json:"layers,omitempty"`
	Manifests json.RawMessage `json:"manifests,omitempty"`
	FSLayers  json.RawMessage `json:"fsLayers,omitempty"` // schema 1

	Type     BlobType
	Children []TreeNode
}

type ImageTree TreeNode

type NodeProcessor func(node *TreeNode, depth int) error

type SecureReadOptions func(opts *SecureReadParams)

type SecureReadParams struct {
	Ref            string
	ExpectedDigest digest.Digest
	ExpectedSize   int64
	ReadLimit      int64
}

type StatFS struct {
	BlockSize int64
	Blocks    uint64
	Bfree     uint64
}

type TreeNode struct {
	Descriptor *ocispec.Descriptor
	Type       BlobType
	Children   []*TreeNode
}

type UsageInfo struct {
	Path       string  `json:"path"`
	SizeB      uint64  `json:"size_b"`
	Free       uint64  `json:"free"`
	FreeP      float32 `json:"free_p"`
	Reserved   uint64  `json:"reserved"`
	ReservedP  float32 `json:"reserved_p"`
	Available  uint64  `json:"available"`
	AvailableP float32 `json:"available_p"`
	Required   uint64  `json:"required"`
	RequiredP  float32 `json:"required_p"`
}