141 lines
3 KiB
Go
141 lines
3 KiB
Go
package server
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import (
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"errors"
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"fmt"
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"net/url"
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"os"
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"path/filepath"
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"runtime"
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"strings"
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)
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type ModelPath struct {
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ProtocolScheme string
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Registry string
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Namespace string
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Repository string
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Tag string
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}
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const (
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DefaultRegistry = "registry.ollama.ai"
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DefaultNamespace = "library"
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DefaultTag = "latest"
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DefaultProtocolScheme = "https"
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)
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var (
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ErrInvalidImageFormat = errors.New("invalid image format")
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ErrInvalidProtocol = errors.New("invalid protocol scheme")
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ErrInsecureProtocol = errors.New("insecure protocol http")
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)
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func ParseModelPath(name string) ModelPath {
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mp := ModelPath{
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ProtocolScheme: DefaultProtocolScheme,
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Registry: DefaultRegistry,
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Namespace: DefaultNamespace,
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Repository: "",
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Tag: DefaultTag,
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}
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before, after, found := strings.Cut(name, "://")
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if found {
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mp.ProtocolScheme = before
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name = after
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}
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parts := strings.Split(name, string(os.PathSeparator))
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switch len(parts) {
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case 3:
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mp.Registry = parts[0]
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mp.Namespace = parts[1]
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mp.Repository = parts[2]
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case 2:
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mp.Namespace = parts[0]
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mp.Repository = parts[1]
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case 1:
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mp.Repository = parts[0]
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}
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if repo, tag, found := strings.Cut(mp.Repository, ":"); found {
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mp.Repository = repo
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mp.Tag = tag
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}
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return mp
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}
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func (mp ModelPath) GetNamespaceRepository() string {
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return fmt.Sprintf("%s/%s", mp.Namespace, mp.Repository)
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}
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func (mp ModelPath) GetFullTagname() string {
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return fmt.Sprintf("%s/%s/%s:%s", mp.Registry, mp.Namespace, mp.Repository, mp.Tag)
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}
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func (mp ModelPath) GetShortTagname() string {
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if mp.Registry == DefaultRegistry {
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if mp.Namespace == DefaultNamespace {
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return fmt.Sprintf("%s:%s", mp.Repository, mp.Tag)
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}
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return fmt.Sprintf("%s/%s:%s", mp.Namespace, mp.Repository, mp.Tag)
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}
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return fmt.Sprintf("%s/%s/%s:%s", mp.Registry, mp.Namespace, mp.Repository, mp.Tag)
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}
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func (mp ModelPath) GetManifestPath(createDir bool) (string, error) {
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home, err := os.UserHomeDir()
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if err != nil {
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return "", err
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}
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path := filepath.Join(home, ".ollama", "models", "manifests", mp.Registry, mp.Namespace, mp.Repository, mp.Tag)
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if createDir {
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if err := os.MkdirAll(filepath.Dir(path), 0o755); err != nil {
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return "", err
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}
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}
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return path, nil
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}
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func (mp ModelPath) BaseURL() *url.URL {
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return &url.URL{
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Scheme: mp.ProtocolScheme,
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Host: mp.Registry,
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}
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}
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func GetManifestPath() (string, error) {
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home, err := os.UserHomeDir()
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if err != nil {
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return "", err
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}
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path := filepath.Join(home, ".ollama", "models", "manifests")
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if err := os.MkdirAll(path, 0o755); err != nil {
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return "", err
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}
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return path, nil
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}
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func GetBlobsPath(digest string) (string, error) {
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home, err := os.UserHomeDir()
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if err != nil {
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return "", err
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}
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if runtime.GOOS == "windows" {
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digest = strings.ReplaceAll(digest, ":", "-")
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}
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path := filepath.Join(home, ".ollama", "models", "blobs", digest)
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if err := os.MkdirAll(filepath.Dir(path), 0o755); err != nil {
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return "", err
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}
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return path, nil
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}
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