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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,187 @@ | ||
| package main | ||
|
|
||
| import ( | ||
| "errors" | ||
| "flag" | ||
| "fmt" | ||
| "io" | ||
| "log" | ||
| "log/slog" | ||
| "net/http" | ||
| "os" | ||
| "path" | ||
| "runtime" | ||
|
|
||
| "github.com/ling0322/libllm/go/llm" | ||
| "github.com/schollz/progressbar/v3" | ||
| ) | ||
|
|
||
| var ErrInvalidModelName = errors.New("invalid model name") | ||
| var ModelCacheDir = getModelCacheDir() | ||
|
|
||
| var modelUrls = map[string]string{ | ||
| "index-chat": "https://huggingface.co/ling0322/bilibili-index-1.9b-libllm/resolve/main/bilibili-index-1.9b-chat-q4.llmpkg", | ||
| "index-character": "https://huggingface.co/ling0322/bilibili-index-1.9b-libllm/resolve/main/bilibili-index-1.9b-character-q4.llmpkg", | ||
| } | ||
|
|
||
| var modelFilenames = map[string]string{ | ||
| "index-chat": "bilibili-index-1.9b-chat-q4.llmpkg", | ||
| "index-character": "bilibili-index-1.9b-character-q4.llmpkg", | ||
| } | ||
|
|
||
| func getModelCacheDir() string { | ||
| var cacheDir string | ||
| if runtime.GOOS == "linux" || runtime.GOOS == "darwin" { | ||
| userDir, err := os.UserHomeDir() | ||
| if err != nil { | ||
| log.Fatal(err) | ||
| } | ||
| cacheDir = path.Join(userDir, ".libllm", "models") | ||
| } else if runtime.GOOS == "windows" { | ||
| binFile, err := os.Executable() | ||
| if err != nil { | ||
| log.Fatal(err) | ||
| } | ||
|
|
||
| binDir := path.Dir(binFile) | ||
| cacheDir = path.Join(binDir, "models") | ||
| } | ||
|
|
||
| return cacheDir | ||
| } | ||
|
|
||
| func downloadModel(name string) (modelPath string, err error) { | ||
| url, ok := modelUrls[name] | ||
| if !ok { | ||
| log.Fatal("invalid model name") | ||
| } | ||
|
|
||
| filename, ok := modelFilenames[name] | ||
| if !ok { | ||
| log.Fatal("invalid model name") | ||
| } | ||
| modelPath = path.Join(ModelCacheDir, filename) | ||
| slog.Info("download model", "url", url) | ||
|
|
||
| req, err := http.NewRequest("GET", url, nil) | ||
| if err != nil { | ||
| return | ||
| } | ||
|
|
||
| resp, err := http.DefaultClient.Do(req) | ||
| if err != nil { | ||
| return | ||
| } | ||
| defer resp.Body.Close() | ||
|
|
||
| modelDir := path.Dir(modelPath) | ||
| err = os.MkdirAll(modelDir, os.ModePerm) | ||
| if err != nil { | ||
| return "", fmt.Errorf("unable to create model cache directory: %w", err) | ||
| } | ||
|
|
||
| f, err := os.OpenFile(modelPath+".download", os.O_CREATE|os.O_WRONLY, 0644) | ||
| if err != nil { | ||
| return | ||
| } | ||
| defer f.Close() | ||
|
|
||
| bar := progressbar.DefaultBytes( | ||
| resp.ContentLength, | ||
| "Downloading", | ||
| ) | ||
| _, err = io.Copy(io.MultiWriter(f, bar), resp.Body) | ||
| if err != nil { | ||
| return | ||
| } | ||
|
|
||
| err = os.Rename(modelPath+".download", modelPath) | ||
| if err != nil { | ||
| return | ||
| } | ||
|
|
||
| slog.Info("Save model", "path", modelPath) | ||
| return modelPath, nil | ||
| } | ||
|
|
||
| // check if model exists in the cache directory. If exists, retuen the model path, otherwise, | ||
| // return the error. | ||
| func checkModelInCache(name string) (modelPath string, err error) { | ||
| filename, ok := modelFilenames[name] | ||
| if !ok { | ||
| return "", ErrInvalidModelName | ||
| } | ||
| modelPath = path.Join(ModelCacheDir, filename) | ||
|
|
||
| _, err = os.Stat(modelPath) | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
|
|
||
| return | ||
| } | ||
|
|
||
| func getOrDownloadModel(name string) (modelPath string, err error) { | ||
| modelPath, err = checkModelInCache(name) | ||
| if err == nil { | ||
| return | ||
| } | ||
|
|
||
| return downloadModel(name) | ||
| } | ||
|
|
||
| func createModelAutoDownload(nameOrPath string, device llm.Device) (llm.Model, error) { | ||
| var modelPath string | ||
| var err error | ||
|
|
||
| _, ok := modelFilenames[nameOrPath] | ||
| if ok { | ||
| modelPath, err = getOrDownloadModel(nameOrPath) | ||
| } else { | ||
| modelPath = nameOrPath | ||
| } | ||
|
|
||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| _, err = os.Stat(modelPath) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("model not exist: %s", modelPath) | ||
| } | ||
|
|
||
| return llm.NewModel(modelPath, device) | ||
| } | ||
|
|
||
| func printDownloadUsage(fs *flag.FlagSet) { | ||
| fmt.Fprintln(os.Stderr, "Usage: llm download [OPTIONS]") | ||
| fmt.Fprintln(os.Stderr, "") | ||
| fmt.Fprintln(os.Stderr, "Options:") | ||
| fs.PrintDefaults() | ||
| fmt.Fprintln(os.Stderr, "") | ||
| } | ||
|
|
||
| func downloadMain(args []string) { | ||
| fs := flag.NewFlagSet("", flag.ExitOnError) | ||
| fs.Usage = func() { | ||
| printDownloadUsage(fs) | ||
| } | ||
|
|
||
| addModelFlag(fs) | ||
| _ = fs.Parse(args) | ||
|
|
||
| if fs.NArg() != 0 { | ||
| fs.Usage() | ||
| os.Exit(1) | ||
| } | ||
|
|
||
| modelName := getModelArg(fs) | ||
| if modelPath, err := checkModelInCache(modelName); err == nil { | ||
| fmt.Printf("model \"%s\" already downloaded. Path is \"%s\"\n", modelName, modelPath) | ||
| } | ||
|
|
||
| _, err := downloadModel(modelName) | ||
| if err != nil { | ||
| log.Fatal(err) | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,18 @@ | ||
| github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= | ||
| github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= | ||
| github.com/k0kubun/go-ansi v0.0.0-20180517002512-3bf9e2903213/go.mod h1:vNUNkEQ1e29fT/6vq2aBdFsgNPmy8qMdSay1npru+Sw= | ||
| github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y= | ||
| github.com/mitchellh/colorstring v0.0.0-20190213212951-d06e56a500db h1:62I3jR2EmQ4l5rM/4FEfDWcRD+abF5XlKShorW5LRoQ= | ||
| github.com/mitchellh/colorstring v0.0.0-20190213212951-d06e56a500db/go.mod h1:l0dey0ia/Uv7NcFFVbCLtqEBQbrT4OCwCSKTEv6enCw= | ||
| github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4= | ||
| github.com/rivo/uniseg v0.4.7 h1:WUdvkW8uEhrYfLC4ZzdpI2ztxP1I582+49Oc5Mq64VQ= | ||
| github.com/rivo/uniseg v0.4.7/go.mod h1:FN3SvrM+Zdj16jyLfmOkMNblXMcoc8DfTHruCPUcx88= | ||
| github.com/schollz/progressbar/v3 v3.14.5 h1:97RrSxbBASxQuZN9yemnyGrFZ/swnG6IrEe2R0BseX8= | ||
| github.com/schollz/progressbar/v3 v3.14.5/go.mod h1:Nrzpuw3Nl0srLY0VlTvC4V6RL50pcEymjy6qyJAaLa0= | ||
| github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME= | ||
| github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI= | ||
| golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= | ||
| golang.org/x/sys v0.22.0 h1:RI27ohtqKCnwULzJLqkv897zojh5/DwS/ENaMzUOaWI= | ||
| golang.org/x/sys v0.22.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA= | ||
| golang.org/x/term v0.22.0 h1:BbsgPEJULsl2fV/AT3v15Mjva5yXKQDyKf+TbDz7QJk= | ||
| golang.org/x/term v0.22.0/go.mod h1:F3qCibpT5AMpCRfhfT53vVJwhLtIVHhB9XDjfFvnMI4= |
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