1183 lines
28 KiB
Go
1183 lines
28 KiB
Go
package server
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import (
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"bufio"
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"bytes"
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"context"
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"crypto/sha256"
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"encoding/json"
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"errors"
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"fmt"
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"html/template"
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"io"
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"log"
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"net/http"
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"os"
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"path/filepath"
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"reflect"
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"strconv"
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"strings"
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"github.com/jmorganca/ollama/api"
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"github.com/jmorganca/ollama/llama"
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"github.com/jmorganca/ollama/parser"
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"github.com/jmorganca/ollama/vector"
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)
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type RegistryOptions struct {
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Insecure bool
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Username string
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Password string
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}
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type Model struct {
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Name string `json:"name"`
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ModelPath string
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Template string
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System string
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Digest string
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Options map[string]interface{}
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Embeddings []vector.Embedding
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}
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func (m *Model) Prompt(request api.GenerateRequest, embedding string) (string, error) {
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t := m.Template
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if request.Template != "" {
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t = request.Template
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}
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tmpl, err := template.New("").Parse(t)
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if err != nil {
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return "", err
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}
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var vars struct {
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First bool
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System string
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Prompt string
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Embed string
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// deprecated: versions <= 0.0.7 used this to omit the system prompt
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Context []int
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}
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vars.First = len(request.Context) == 0
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vars.System = m.System
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vars.Prompt = request.Prompt
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vars.Context = request.Context
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vars.Embed = embedding
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if request.System != "" {
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vars.System = request.System
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}
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var sb strings.Builder
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if err := tmpl.Execute(&sb, vars); err != nil {
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return "", err
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}
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return sb.String(), nil
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}
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type ManifestV2 struct {
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SchemaVersion int `json:"schemaVersion"`
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MediaType string `json:"mediaType"`
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Config Layer `json:"config"`
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Layers []*Layer `json:"layers"`
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}
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type Layer struct {
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MediaType string `json:"mediaType"`
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Digest string `json:"digest"`
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Size int `json:"size"`
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}
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type LayerReader struct {
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Layer
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io.Reader
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}
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type ConfigV2 struct {
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Architecture string `json:"architecture"`
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OS string `json:"os"`
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RootFS RootFS `json:"rootfs"`
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}
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type RootFS struct {
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Type string `json:"type"`
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DiffIDs []string `json:"diff_ids"`
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}
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func (m *ManifestV2) GetTotalSize() int {
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var total int
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for _, layer := range m.Layers {
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total += layer.Size
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}
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total += m.Config.Size
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return total
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}
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func GetManifest(mp ModelPath) (*ManifestV2, error) {
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fp, err := mp.GetManifestPath(false)
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if err != nil {
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return nil, err
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}
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if _, err = os.Stat(fp); err != nil {
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return nil, err
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}
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var manifest *ManifestV2
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bts, err := os.ReadFile(fp)
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if err != nil {
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return nil, fmt.Errorf("couldn't open file '%s'", fp)
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}
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if err := json.Unmarshal(bts, &manifest); err != nil {
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return nil, err
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}
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return manifest, nil
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}
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func GetModel(name string) (*Model, error) {
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mp := ParseModelPath(name)
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manifest, err := GetManifest(mp)
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if err != nil {
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return nil, err
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}
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model := &Model{
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Name: mp.GetFullTagname(),
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Digest: manifest.Config.Digest,
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}
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for _, layer := range manifest.Layers {
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filename, err := GetBlobsPath(layer.Digest)
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if err != nil {
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return nil, err
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}
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switch layer.MediaType {
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case "application/vnd.ollama.image.model":
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model.ModelPath = filename
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case "application/vnd.ollama.image.embed":
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file, err := os.Open(filename)
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if err != nil {
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return nil, fmt.Errorf("failed to open file: %s", filename)
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}
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defer file.Close()
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if err = json.NewDecoder(file).Decode(&model.Embeddings); err != nil {
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return nil, err
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}
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case "application/vnd.ollama.image.template":
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bts, err := os.ReadFile(filename)
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if err != nil {
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return nil, err
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}
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model.Template = string(bts)
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case "application/vnd.ollama.image.system":
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bts, err := os.ReadFile(filename)
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if err != nil {
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return nil, err
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}
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model.System = string(bts)
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case "application/vnd.ollama.image.prompt":
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bts, err := os.ReadFile(filename)
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if err != nil {
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return nil, err
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}
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model.Template = string(bts)
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case "application/vnd.ollama.image.params":
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params, err := os.Open(filename)
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if err != nil {
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return nil, err
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}
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defer params.Close()
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// parse model options parameters into a map so that we can see which fields have been specified explicitly
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if err = json.NewDecoder(params).Decode(&model.Options); err != nil {
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return nil, err
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}
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}
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}
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return model, nil
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}
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func filenameWithPath(path, f string) (string, error) {
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// if filePath starts with ~/, replace it with the user's home directory.
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if strings.HasPrefix(f, "~/") {
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parts := strings.Split(f, "/")
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home, err := os.UserHomeDir()
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if err != nil {
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return "", fmt.Errorf("failed to open file: %v", err)
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}
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f = filepath.Join(home, filepath.Join(parts[1:]...))
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}
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// if filePath is not an absolute path, make it relative to the modelfile path
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if !filepath.IsAbs(f) {
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f = filepath.Join(filepath.Dir(path), f)
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}
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return f, nil
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}
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func CreateModel(ctx context.Context, name string, path string, fn func(resp api.ProgressResponse)) error {
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mf, err := os.Open(path)
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if err != nil {
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fn(api.ProgressResponse{Status: fmt.Sprintf("couldn't open modelfile '%s'", path)})
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return fmt.Errorf("failed to open file: %w", err)
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}
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defer mf.Close()
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fn(api.ProgressResponse{Status: "parsing modelfile"})
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commands, err := parser.Parse(mf)
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if err != nil {
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return err
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}
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var layers []*LayerReader
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params := make(map[string][]string)
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embed := EmbeddingParams{fn: fn, opts: api.DefaultOptions()}
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for _, c := range commands {
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log.Printf("[%s] - %s\n", c.Name, c.Args)
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switch c.Name {
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case "model":
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fn(api.ProgressResponse{Status: "looking for model"})
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embed.model = c.Args
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mf, err := GetManifest(ParseModelPath(c.Args))
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if err != nil {
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modelFile, err := filenameWithPath(path, c.Args)
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if err != nil {
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return err
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}
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if _, err := os.Stat(modelFile); err != nil {
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// the model file does not exist, try pulling it
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if errors.Is(err, os.ErrNotExist) {
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fn(api.ProgressResponse{Status: "pulling model file"})
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if err := PullModel(ctx, c.Args, &RegistryOptions{}, fn); err != nil {
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return err
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}
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mf, err = GetManifest(ParseModelPath(c.Args))
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if err != nil {
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return fmt.Errorf("failed to open file after pull: %v", err)
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}
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} else {
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return err
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}
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} else {
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// create a model from this specified file
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fn(api.ProgressResponse{Status: "creating model layer"})
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file, err := os.Open(modelFile)
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if err != nil {
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return fmt.Errorf("failed to open file: %v", err)
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}
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defer file.Close()
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l, err := CreateLayer(file)
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if err != nil {
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return fmt.Errorf("failed to create layer: %v", err)
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}
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l.MediaType = "application/vnd.ollama.image.model"
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layers = append(layers, l)
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}
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}
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if mf != nil {
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log.Printf("manifest = %#v", mf)
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for _, l := range mf.Layers {
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newLayer, err := GetLayerWithBufferFromLayer(l)
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if err != nil {
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return err
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}
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layers = append(layers, newLayer)
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}
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}
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case "embed":
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embedFilePath, err := filenameWithPath(path, c.Args)
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if err != nil {
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return err
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}
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embed.files = append(embed.files, embedFilePath)
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case "license":
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fn(api.ProgressResponse{Status: fmt.Sprintf("creating model %s layer", c.Name)})
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mediaType := fmt.Sprintf("application/vnd.ollama.image.%s", c.Name)
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layer, err := CreateLayer(strings.NewReader(c.Args))
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if err != nil {
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return err
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}
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layer.MediaType = mediaType
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layers = append(layers, layer)
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case "template", "system", "prompt":
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fn(api.ProgressResponse{Status: fmt.Sprintf("creating model %s layer", c.Name)})
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// remove the prompt layer if one exists
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mediaType := fmt.Sprintf("application/vnd.ollama.image.%s", c.Name)
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layers = removeLayerFromLayers(layers, mediaType)
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layer, err := CreateLayer(strings.NewReader(c.Args))
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if err != nil {
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return err
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}
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layer.MediaType = mediaType
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layers = append(layers, layer)
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default:
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// runtime parameters, build a list of args for each parameter to allow multiple values to be specified (ex: multiple stop tokens)
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params[c.Name] = append(params[c.Name], c.Args)
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}
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}
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// Create a single layer for the parameters
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if len(params) > 0 {
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fn(api.ProgressResponse{Status: "creating parameter layer"})
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layers = removeLayerFromLayers(layers, "application/vnd.ollama.image.params")
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formattedParams, err := formatParams(params)
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if err != nil {
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return fmt.Errorf("couldn't create params json: %v", err)
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}
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bts, err := json.Marshal(formattedParams)
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if err != nil {
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return err
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}
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l, err := CreateLayer(bytes.NewReader(bts))
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if err != nil {
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return fmt.Errorf("failed to create layer: %v", err)
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}
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l.MediaType = "application/vnd.ollama.image.params"
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layers = append(layers, l)
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// apply these parameters to the embedding options, in case embeddings need to be generated using this model
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embed.opts = api.DefaultOptions()
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embed.opts.FromMap(formattedParams)
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}
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// generate the embedding layers
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embeddingLayers, err := embeddingLayers(embed)
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if err != nil {
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return err
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}
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layers = append(layers, embeddingLayers...)
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digests, err := getLayerDigests(layers)
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if err != nil {
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return err
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}
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var manifestLayers []*Layer
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for _, l := range layers {
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manifestLayers = append(manifestLayers, &l.Layer)
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}
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// Create a layer for the config object
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fn(api.ProgressResponse{Status: "creating config layer"})
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cfg, err := createConfigLayer(digests)
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if err != nil {
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return err
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}
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layers = append(layers, cfg)
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err = SaveLayers(layers, fn, false)
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if err != nil {
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return err
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}
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// Create the manifest
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fn(api.ProgressResponse{Status: "writing manifest"})
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err = CreateManifest(name, cfg, manifestLayers)
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if err != nil {
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return err
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}
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fn(api.ProgressResponse{Status: "success"})
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return nil
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}
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type EmbeddingParams struct {
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model string
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opts api.Options
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files []string // paths to files to embed
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fn func(resp api.ProgressResponse)
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}
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// embeddingLayers loads the associated LLM and generates the embeddings to be stored from an input file
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func embeddingLayers(e EmbeddingParams) ([]*LayerReader, error) {
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layers := []*LayerReader{}
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if len(e.files) > 0 {
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if _, err := os.Stat(e.model); err != nil {
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if os.IsNotExist(err) {
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// this is a model name rather than the file
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model, err := GetModel(e.model)
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if err != nil {
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return nil, fmt.Errorf("failed to get model to generate embeddings: %v", err)
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}
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e.model = model.ModelPath
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} else {
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return nil, fmt.Errorf("failed to get model file to generate embeddings: %v", err)
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}
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}
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e.opts.EmbeddingOnly = true
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llm, err := llama.New(e.model, e.opts)
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if err != nil {
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return nil, fmt.Errorf("load model to generate embeddings: %v", err)
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}
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defer func() {
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if llm != nil {
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llm.Close()
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}
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}()
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addedFiles := make(map[string]bool) // keep track of files that have already been added
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for _, filePattern := range e.files {
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matchingFiles, err := filepath.Glob(filePattern)
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if err != nil {
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return nil, fmt.Errorf("could not find files with pattern %s: %w", filePattern, err)
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}
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|
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for _, filePath := range matchingFiles {
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if addedFiles[filePath] {
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continue
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}
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addedFiles[filePath] = true
|
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// TODO: check file type
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f, err := os.Open(filePath)
|
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if err != nil {
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return nil, fmt.Errorf("could not open embed file: %w", err)
|
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}
|
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scanner := bufio.NewScanner(f)
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scanner.Split(bufio.ScanLines)
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|
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data := []string{}
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for scanner.Scan() {
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data = append(data, scanner.Text())
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}
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f.Close()
|
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|
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// the digest of the file is set here so that the client knows a new operation is in progress
|
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fileDigest, _ := GetSHA256Digest(bytes.NewReader([]byte(filePath)))
|
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|
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embeddings := []vector.Embedding{}
|
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for i, d := range data {
|
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if strings.TrimSpace(d) == "" {
|
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continue
|
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}
|
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e.fn(api.ProgressResponse{
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Status: fmt.Sprintf("creating embeddings for file %s", filePath),
|
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Digest: fileDigest,
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Total: len(data) - 1,
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Completed: i,
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})
|
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embed, err := llm.Embedding(d)
|
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if err != nil {
|
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log.Printf("failed to generate embedding for '%s' line %d: %v", filePath, i+1, err)
|
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continue
|
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}
|
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embeddings = append(embeddings, vector.Embedding{Data: d, Vector: embed})
|
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}
|
|
|
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b, err := json.Marshal(embeddings)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("failed to encode embeddings: %w", err)
|
|
}
|
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r := bytes.NewReader(b)
|
|
|
|
digest, size := GetSHA256Digest(r)
|
|
// Reset the position of the reader after calculating the digest
|
|
if _, err := r.Seek(0, io.SeekStart); err != nil {
|
|
return nil, fmt.Errorf("could not reset embed reader: %w", err)
|
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}
|
|
|
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layer := &LayerReader{
|
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Layer: Layer{
|
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MediaType: "application/vnd.ollama.image.embed",
|
|
Digest: digest,
|
|
Size: size,
|
|
},
|
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Reader: r,
|
|
}
|
|
|
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layers = append(layers, layer)
|
|
}
|
|
}
|
|
}
|
|
return layers, nil
|
|
}
|
|
|
|
func removeLayerFromLayers(layers []*LayerReader, mediaType string) []*LayerReader {
|
|
j := 0
|
|
for _, l := range layers {
|
|
if l.MediaType != mediaType {
|
|
layers[j] = l
|
|
j++
|
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}
|
|
}
|
|
return layers[:j]
|
|
}
|
|
|
|
func SaveLayers(layers []*LayerReader, fn func(resp api.ProgressResponse), force bool) error {
|
|
// Write each of the layers to disk
|
|
for _, layer := range layers {
|
|
fp, err := GetBlobsPath(layer.Digest)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
_, err = os.Stat(fp)
|
|
if os.IsNotExist(err) || force {
|
|
fn(api.ProgressResponse{Status: fmt.Sprintf("writing layer %s", layer.Digest)})
|
|
|
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out, err := os.Create(fp)
|
|
if err != nil {
|
|
log.Printf("couldn't create %s", fp)
|
|
return err
|
|
}
|
|
defer out.Close()
|
|
|
|
if _, err = io.Copy(out, layer.Reader); err != nil {
|
|
return err
|
|
}
|
|
|
|
} else {
|
|
fn(api.ProgressResponse{Status: fmt.Sprintf("using already created layer %s", layer.Digest)})
|
|
}
|
|
}
|
|
|
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return nil
|
|
}
|
|
|
|
func CreateManifest(name string, cfg *LayerReader, layers []*Layer) error {
|
|
mp := ParseModelPath(name)
|
|
|
|
manifest := ManifestV2{
|
|
SchemaVersion: 2,
|
|
MediaType: "application/vnd.docker.distribution.manifest.v2+json",
|
|
Config: Layer{
|
|
MediaType: cfg.MediaType,
|
|
Size: cfg.Size,
|
|
Digest: cfg.Digest,
|
|
},
|
|
Layers: layers,
|
|
}
|
|
|
|
manifestJSON, err := json.Marshal(manifest)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
fp, err := mp.GetManifestPath(true)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return os.WriteFile(fp, manifestJSON, 0o644)
|
|
}
|
|
|
|
func GetLayerWithBufferFromLayer(layer *Layer) (*LayerReader, error) {
|
|
fp, err := GetBlobsPath(layer.Digest)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
file, err := os.Open(fp)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("could not open blob: %w", err)
|
|
}
|
|
defer file.Close()
|
|
|
|
newLayer, err := CreateLayer(file)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
newLayer.MediaType = layer.MediaType
|
|
return newLayer, nil
|
|
}
|
|
|
|
// formatParams converts specified parameter options to their correct types
|
|
func formatParams(params map[string][]string) (map[string]interface{}, error) {
|
|
opts := api.Options{}
|
|
valueOpts := reflect.ValueOf(&opts).Elem() // names of the fields in the options struct
|
|
typeOpts := reflect.TypeOf(opts) // types of the fields in the options struct
|
|
|
|
// build map of json struct tags to their types
|
|
jsonOpts := make(map[string]reflect.StructField)
|
|
for _, field := range reflect.VisibleFields(typeOpts) {
|
|
jsonTag := strings.Split(field.Tag.Get("json"), ",")[0]
|
|
if jsonTag != "" {
|
|
jsonOpts[jsonTag] = field
|
|
}
|
|
}
|
|
|
|
out := make(map[string]interface{})
|
|
// iterate params and set values based on json struct tags
|
|
for key, vals := range params {
|
|
if opt, ok := jsonOpts[key]; ok {
|
|
field := valueOpts.FieldByName(opt.Name)
|
|
if field.IsValid() && field.CanSet() {
|
|
switch field.Kind() {
|
|
case reflect.Float32:
|
|
floatVal, err := strconv.ParseFloat(vals[0], 32)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("invalid float value %s", vals)
|
|
}
|
|
|
|
out[key] = floatVal
|
|
case reflect.Int:
|
|
intVal, err := strconv.ParseInt(vals[0], 10, 0)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("invalid int value %s", vals)
|
|
}
|
|
|
|
out[key] = intVal
|
|
case reflect.Bool:
|
|
boolVal, err := strconv.ParseBool(vals[0])
|
|
if err != nil {
|
|
return nil, fmt.Errorf("invalid bool value %s", vals)
|
|
}
|
|
|
|
out[key] = boolVal
|
|
case reflect.String:
|
|
out[key] = vals[0]
|
|
case reflect.Slice:
|
|
// TODO: only string slices are supported right now
|
|
out[key] = vals
|
|
default:
|
|
return nil, fmt.Errorf("unknown type %s for %s", field.Kind(), key)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return out, nil
|
|
}
|
|
|
|
func getLayerDigests(layers []*LayerReader) ([]string, error) {
|
|
var digests []string
|
|
for _, l := range layers {
|
|
if l.Digest == "" {
|
|
return nil, fmt.Errorf("layer is missing a digest")
|
|
}
|
|
digests = append(digests, l.Digest)
|
|
}
|
|
return digests, nil
|
|
}
|
|
|
|
// CreateLayer creates a Layer object from a given file
|
|
func CreateLayer(f io.ReadSeeker) (*LayerReader, error) {
|
|
digest, size := GetSHA256Digest(f)
|
|
f.Seek(0, 0)
|
|
|
|
layer := &LayerReader{
|
|
Layer: Layer{
|
|
MediaType: "application/vnd.docker.image.rootfs.diff.tar",
|
|
Digest: digest,
|
|
Size: size,
|
|
},
|
|
Reader: f,
|
|
}
|
|
|
|
return layer, nil
|
|
}
|
|
|
|
func CopyModel(src, dest string) error {
|
|
srcPath, err := ParseModelPath(src).GetManifestPath(false)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
destPath, err := ParseModelPath(dest).GetManifestPath(true)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
// copy the file
|
|
input, err := os.ReadFile(srcPath)
|
|
if err != nil {
|
|
fmt.Println("Error reading file:", err)
|
|
return err
|
|
}
|
|
|
|
err = os.WriteFile(destPath, input, 0o644)
|
|
if err != nil {
|
|
fmt.Println("Error reading file:", err)
|
|
return err
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func DeleteModel(name string) error {
|
|
mp := ParseModelPath(name)
|
|
|
|
manifest, err := GetManifest(mp)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
deleteMap := make(map[string]bool)
|
|
for _, layer := range manifest.Layers {
|
|
deleteMap[layer.Digest] = true
|
|
}
|
|
deleteMap[manifest.Config.Digest] = true
|
|
|
|
fp, err := GetManifestPath()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
err = filepath.Walk(fp, func(path string, info os.FileInfo, err error) error {
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if !info.IsDir() {
|
|
path := path[len(fp)+1:]
|
|
slashIndex := strings.LastIndex(path, "/")
|
|
if slashIndex == -1 {
|
|
return nil
|
|
}
|
|
tag := path[:slashIndex] + ":" + path[slashIndex+1:]
|
|
fmp := ParseModelPath(tag)
|
|
|
|
// skip the manifest we're trying to delete
|
|
if mp.GetFullTagname() == fmp.GetFullTagname() {
|
|
return nil
|
|
}
|
|
|
|
// save (i.e. delete from the deleteMap) any files used in other manifests
|
|
manifest, err := GetManifest(fmp)
|
|
if err != nil {
|
|
log.Printf("skipping file: %s", fp)
|
|
return nil
|
|
}
|
|
for _, layer := range manifest.Layers {
|
|
delete(deleteMap, layer.Digest)
|
|
}
|
|
delete(deleteMap, manifest.Config.Digest)
|
|
}
|
|
return nil
|
|
})
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
// only delete the files which are still in the deleteMap
|
|
for k, v := range deleteMap {
|
|
if v {
|
|
fp, err := GetBlobsPath(k)
|
|
if err != nil {
|
|
log.Printf("couldn't get file path for '%s': %v", k, err)
|
|
continue
|
|
}
|
|
if err := os.Remove(fp); err != nil {
|
|
log.Printf("couldn't remove file '%s': %v", fp, err)
|
|
continue
|
|
}
|
|
}
|
|
}
|
|
|
|
fp, err = mp.GetManifestPath(false)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
err = os.Remove(fp)
|
|
if err != nil {
|
|
log.Printf("couldn't remove manifest file '%s': %v", fp, err)
|
|
return err
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func PushModel(name string, regOpts *RegistryOptions, fn func(api.ProgressResponse)) error {
|
|
mp := ParseModelPath(name)
|
|
|
|
fn(api.ProgressResponse{Status: "retrieving manifest"})
|
|
|
|
manifest, err := GetManifest(mp)
|
|
if err != nil {
|
|
fn(api.ProgressResponse{Status: "couldn't retrieve manifest"})
|
|
return err
|
|
}
|
|
|
|
var layers []*Layer
|
|
layers = append(layers, manifest.Layers...)
|
|
layers = append(layers, &manifest.Config)
|
|
|
|
for _, layer := range layers {
|
|
exists, err := checkBlobExistence(mp, layer.Digest, regOpts)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if exists {
|
|
fn(api.ProgressResponse{
|
|
Status: "using existing layer",
|
|
Digest: layer.Digest,
|
|
Total: layer.Size,
|
|
Completed: layer.Size,
|
|
})
|
|
log.Printf("Layer %s already exists", layer.Digest)
|
|
continue
|
|
}
|
|
|
|
fn(api.ProgressResponse{
|
|
Status: "starting upload",
|
|
Digest: layer.Digest,
|
|
Total: layer.Size,
|
|
})
|
|
|
|
location, err := startUpload(mp, regOpts)
|
|
if err != nil {
|
|
log.Printf("couldn't start upload: %v", err)
|
|
return err
|
|
}
|
|
|
|
err = uploadBlobChunked(mp, location, layer, regOpts, fn)
|
|
if err != nil {
|
|
log.Printf("error uploading blob: %v", err)
|
|
return err
|
|
}
|
|
}
|
|
|
|
fn(api.ProgressResponse{Status: "pushing manifest"})
|
|
url := fmt.Sprintf("%s/v2/%s/manifests/%s", mp.Registry, mp.GetNamespaceRepository(), mp.Tag)
|
|
headers := map[string]string{
|
|
"Content-Type": "application/vnd.docker.distribution.manifest.v2+json",
|
|
}
|
|
|
|
manifestJSON, err := json.Marshal(manifest)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
resp, err := makeRequest("PUT", url, headers, bytes.NewReader(manifestJSON), regOpts)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer resp.Body.Close()
|
|
|
|
// Check for success: For a successful upload, the Docker registry will respond with a 201 Created
|
|
if resp.StatusCode != http.StatusCreated {
|
|
body, _ := io.ReadAll(resp.Body)
|
|
return fmt.Errorf("on push registry responded with code %d: %v", resp.StatusCode, string(body))
|
|
}
|
|
|
|
fn(api.ProgressResponse{Status: "success"})
|
|
|
|
return nil
|
|
}
|
|
|
|
func PullModel(ctx context.Context, name string, regOpts *RegistryOptions, fn func(api.ProgressResponse)) error {
|
|
mp := ParseModelPath(name)
|
|
|
|
fn(api.ProgressResponse{Status: "pulling manifest"})
|
|
|
|
manifest, err := pullModelManifest(mp, regOpts)
|
|
if err != nil {
|
|
return fmt.Errorf("pull model manifest: %s", err)
|
|
}
|
|
|
|
var layers []*Layer
|
|
layers = append(layers, manifest.Layers...)
|
|
layers = append(layers, &manifest.Config)
|
|
|
|
for _, layer := range layers {
|
|
if err := downloadBlob(ctx, mp, layer.Digest, regOpts, fn); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
|
|
fn(api.ProgressResponse{Status: "verifying sha256 digest"})
|
|
for _, layer := range layers {
|
|
if err := verifyBlob(layer.Digest); err != nil {
|
|
if errors.Is(err, errDigestMismatch) {
|
|
// something went wrong, delete the blob
|
|
fp, err := GetBlobsPath(layer.Digest)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if err := os.Remove(fp); err != nil {
|
|
// log this, but return the original error
|
|
log.Printf("couldn't remove file with digest mismatch '%s': %v", fp, err)
|
|
}
|
|
}
|
|
return err
|
|
}
|
|
}
|
|
|
|
fn(api.ProgressResponse{Status: "writing manifest"})
|
|
|
|
manifestJSON, err := json.Marshal(manifest)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
fp, err := mp.GetManifestPath(true)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
err = os.WriteFile(fp, manifestJSON, 0o644)
|
|
if err != nil {
|
|
log.Printf("couldn't write to %s", fp)
|
|
return err
|
|
}
|
|
|
|
fn(api.ProgressResponse{Status: "success"})
|
|
|
|
return nil
|
|
}
|
|
|
|
func pullModelManifest(mp ModelPath, regOpts *RegistryOptions) (*ManifestV2, error) {
|
|
url := fmt.Sprintf("%s/v2/%s/manifests/%s", mp.Registry, mp.GetNamespaceRepository(), mp.Tag)
|
|
headers := map[string]string{
|
|
"Accept": "application/vnd.docker.distribution.manifest.v2+json",
|
|
}
|
|
|
|
resp, err := makeRequest("GET", url, headers, nil, regOpts)
|
|
if err != nil {
|
|
log.Printf("couldn't get manifest: %v", err)
|
|
return nil, err
|
|
}
|
|
defer resp.Body.Close()
|
|
|
|
// Check for success: For a successful upload, the Docker registry will respond with a 201 Created
|
|
if resp.StatusCode != http.StatusOK {
|
|
if resp.StatusCode == http.StatusNotFound {
|
|
return nil, fmt.Errorf("model not found")
|
|
}
|
|
body, _ := io.ReadAll(resp.Body)
|
|
return nil, fmt.Errorf("on pull registry responded with code %d: %s", resp.StatusCode, body)
|
|
}
|
|
|
|
var m *ManifestV2
|
|
if err := json.NewDecoder(resp.Body).Decode(&m); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return m, err
|
|
}
|
|
|
|
func createConfigLayer(layers []string) (*LayerReader, error) {
|
|
// TODO change architecture and OS
|
|
config := ConfigV2{
|
|
Architecture: "arm64",
|
|
OS: "linux",
|
|
RootFS: RootFS{
|
|
Type: "layers",
|
|
DiffIDs: layers,
|
|
},
|
|
}
|
|
|
|
configJSON, err := json.Marshal(config)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
digest, size := GetSHA256Digest(bytes.NewBuffer(configJSON))
|
|
|
|
layer := &LayerReader{
|
|
Layer: Layer{
|
|
MediaType: "application/vnd.docker.container.image.v1+json",
|
|
Digest: digest,
|
|
Size: size,
|
|
},
|
|
Reader: bytes.NewBuffer(configJSON),
|
|
}
|
|
return layer, nil
|
|
}
|
|
|
|
// GetSHA256Digest returns the SHA256 hash of a given buffer and returns it, and the size of buffer
|
|
func GetSHA256Digest(r io.Reader) (string, int) {
|
|
h := sha256.New()
|
|
n, err := io.Copy(h, r)
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
|
|
return fmt.Sprintf("sha256:%x", h.Sum(nil)), int(n)
|
|
}
|
|
|
|
func startUpload(mp ModelPath, regOpts *RegistryOptions) (string, error) {
|
|
url := fmt.Sprintf("%s/v2/%s/blobs/uploads/", mp.Registry, mp.GetNamespaceRepository())
|
|
|
|
resp, err := makeRequest("POST", url, nil, nil, regOpts)
|
|
if err != nil {
|
|
log.Printf("couldn't start upload: %v", err)
|
|
return "", err
|
|
}
|
|
defer resp.Body.Close()
|
|
|
|
// Check for success
|
|
if resp.StatusCode != http.StatusAccepted {
|
|
body, _ := io.ReadAll(resp.Body)
|
|
return "", fmt.Errorf("on upload registry responded with code %d: %s", resp.StatusCode, body)
|
|
}
|
|
|
|
// Extract UUID location from header
|
|
location := resp.Header.Get("Location")
|
|
if location == "" {
|
|
return "", fmt.Errorf("location header is missing in response")
|
|
}
|
|
|
|
return location, nil
|
|
}
|
|
|
|
// Function to check if a blob already exists in the Docker registry
|
|
func checkBlobExistence(mp ModelPath, digest string, regOpts *RegistryOptions) (bool, error) {
|
|
url := fmt.Sprintf("%s/v2/%s/blobs/%s", mp.Registry, mp.GetNamespaceRepository(), digest)
|
|
|
|
resp, err := makeRequest("HEAD", url, nil, nil, regOpts)
|
|
if err != nil {
|
|
log.Printf("couldn't check for blob: %v", err)
|
|
return false, err
|
|
}
|
|
defer resp.Body.Close()
|
|
|
|
// Check for success: If the blob exists, the Docker registry will respond with a 200 OK
|
|
return resp.StatusCode == http.StatusOK, nil
|
|
}
|
|
|
|
func uploadBlobChunked(mp ModelPath, url string, layer *Layer, regOpts *RegistryOptions, fn func(api.ProgressResponse)) error {
|
|
// TODO allow resumability
|
|
// TODO allow canceling uploads via DELETE
|
|
// TODO allow cross repo blob mount
|
|
|
|
fp, err := GetBlobsPath(layer.Digest)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
f, err := os.Open(fp)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
totalUploaded := 0
|
|
|
|
r, w := io.Pipe()
|
|
defer r.Close()
|
|
|
|
go func() {
|
|
defer w.Close()
|
|
for {
|
|
n, err := io.CopyN(w, f, 1024*1024)
|
|
if err != nil && !errors.Is(err, io.EOF) {
|
|
fn(api.ProgressResponse{
|
|
Status: fmt.Sprintf("error copying pipe: %v", err),
|
|
Digest: layer.Digest,
|
|
Total: layer.Size,
|
|
Completed: totalUploaded,
|
|
})
|
|
return
|
|
}
|
|
|
|
totalUploaded += int(n)
|
|
|
|
fn(api.ProgressResponse{
|
|
Status: fmt.Sprintf("uploading %s", layer.Digest),
|
|
Digest: layer.Digest,
|
|
Total: layer.Size,
|
|
Completed: totalUploaded,
|
|
})
|
|
|
|
if totalUploaded >= layer.Size {
|
|
return
|
|
}
|
|
}
|
|
}()
|
|
|
|
url = fmt.Sprintf("%s&digest=%s", url, layer.Digest)
|
|
|
|
headers := make(map[string]string)
|
|
headers["Content-Type"] = "application/octet-stream"
|
|
headers["Content-Range"] = fmt.Sprintf("0-%d", layer.Size-1)
|
|
headers["Content-Length"] = strconv.Itoa(int(layer.Size))
|
|
|
|
// finish the upload
|
|
resp, err := makeRequest("PUT", url, headers, r, regOpts)
|
|
if err != nil {
|
|
log.Printf("couldn't finish upload: %v", err)
|
|
return err
|
|
}
|
|
defer resp.Body.Close()
|
|
|
|
if resp.StatusCode != http.StatusCreated {
|
|
body, _ := io.ReadAll(resp.Body)
|
|
return fmt.Errorf("on finish upload registry responded with code %d: %v", resp.StatusCode, string(body))
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func makeRequest(method, url string, headers map[string]string, body io.Reader, regOpts *RegistryOptions) (*http.Response, error) {
|
|
if !strings.HasPrefix(url, "http") {
|
|
if regOpts.Insecure {
|
|
url = "http://" + url
|
|
} else {
|
|
url = "https://" + url
|
|
}
|
|
}
|
|
|
|
req, err := http.NewRequest(method, url, body)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
for k, v := range headers {
|
|
req.Header.Set(k, v)
|
|
}
|
|
|
|
// TODO: better auth
|
|
if regOpts.Username != "" && regOpts.Password != "" {
|
|
req.SetBasicAuth(regOpts.Username, regOpts.Password)
|
|
}
|
|
|
|
client := &http.Client{
|
|
CheckRedirect: func(req *http.Request, via []*http.Request) error {
|
|
if len(via) >= 10 {
|
|
return fmt.Errorf("too many redirects")
|
|
}
|
|
log.Printf("redirected to: %s\n", req.URL)
|
|
return nil
|
|
},
|
|
}
|
|
resp, err := client.Do(req)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return resp, nil
|
|
}
|
|
|
|
var errDigestMismatch = fmt.Errorf("digest mismatch, file must be downloaded again")
|
|
|
|
func verifyBlob(digest string) error {
|
|
fp, err := GetBlobsPath(digest)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
f, err := os.Open(fp)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer f.Close()
|
|
|
|
fileDigest, _ := GetSHA256Digest(f)
|
|
if digest != fileDigest {
|
|
return fmt.Errorf("%w: want %s, got %s", errDigestMismatch, digest, fileDigest)
|
|
}
|
|
|
|
return nil
|
|
}
|