cmd.go 28.3 KB
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package cmd

import (
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	"archive/zip"
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	"bytes"
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	"context"
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	"crypto/ed25519"
	"crypto/rand"
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	"crypto/sha256"
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	"encoding/pem"
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	"errors"
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	"fmt"
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	"io"
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	"log"
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	"math"
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	"net"
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	"net/http"
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	"os"
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	"os/signal"
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	"path/filepath"
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	"regexp"
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	"runtime"
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	"strings"
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	"syscall"
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	"time"
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	"github.com/containerd/console"

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	"github.com/olekukonko/tablewriter"
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	"github.com/spf13/cobra"
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	"golang.org/x/crypto/ssh"
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	"golang.org/x/exp/slices"
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	"golang.org/x/term"
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	"github.com/ollama/ollama/api"
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	"github.com/ollama/ollama/auth"
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	"github.com/ollama/ollama/format"
	"github.com/ollama/ollama/progress"
	"github.com/ollama/ollama/server"
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	"github.com/ollama/ollama/types/errtypes"
	"github.com/ollama/ollama/types/model"
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	"github.com/ollama/ollama/version"
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)

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func CreateHandler(cmd *cobra.Command, args []string) error {
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	filename, _ := cmd.Flags().GetString("file")
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	filename, err := filepath.Abs(filename)
	if err != nil {
		return err
	}

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	client, err := api.ClientFromEnvironment()
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	if err != nil {
		return err
	}
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	p := progress.NewProgress(os.Stderr)
	defer p.Stop()

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	f, err := os.Open(filename)
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	if err != nil {
		return err
	}
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	defer f.Close()
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	modelfile, err := model.ParseFile(f)
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	if err != nil {
		return err
	}

	home, err := os.UserHomeDir()
	if err != nil {
		return err
	}

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	status := "transferring model data"
	spinner := progress.NewSpinner(status)
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	p.Add(status, spinner)

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	for i := range modelfile.Commands {
		switch modelfile.Commands[i].Name {
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		case "model", "adapter":
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			path := modelfile.Commands[i].Args
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			if path == "~" {
				path = home
			} else if strings.HasPrefix(path, "~/") {
				path = filepath.Join(home, path[2:])
			}

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			if !filepath.IsAbs(path) {
				path = filepath.Join(filepath.Dir(filename), path)
			}

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			fi, err := os.Stat(path)
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			if errors.Is(err, os.ErrNotExist) && modelfile.Commands[i].Name == "model" {
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				continue
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			} else if err != nil {
				return err
			}

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			if fi.IsDir() {
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				// this is likely a safetensors or pytorch directory
				// TODO make this work w/ adapters
				tempfile, err := tempZipFiles(path)
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				if err != nil {
					return err
				}
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				defer os.RemoveAll(tempfile)
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				path = tempfile
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			}

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			digest, err := createBlob(cmd, client, path)
			if err != nil {
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				return err
			}

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			modelfile.Commands[i].Args = "@" + digest
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		}
	}
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	bars := make(map[string]*progress.Bar)
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	fn := func(resp api.ProgressResponse) error {
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		if resp.Digest != "" {
			spinner.Stop()

			bar, ok := bars[resp.Digest]
			if !ok {
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				bar = progress.NewBar(fmt.Sprintf("pulling %s...", resp.Digest[7:19]), resp.Total, resp.Completed)
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				bars[resp.Digest] = bar
				p.Add(resp.Digest, bar)
			}

			bar.Set(resp.Completed)
		} else if status != resp.Status {
			spinner.Stop()

			status = resp.Status
			spinner = progress.NewSpinner(status)
			p.Add(status, spinner)
		}

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		return nil
	}

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	quantize, _ := cmd.Flags().GetString("quantize")
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	request := api.CreateRequest{Name: args[0], Modelfile: modelfile.String(), Quantize: quantize}
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	if err := client.Create(cmd.Context(), &request, fn); err != nil {
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		return err
	}

	return nil
}

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func tempZipFiles(path string) (string, error) {
	tempfile, err := os.CreateTemp("", "ollama-tf")
	if err != nil {
		return "", err
	}
	defer tempfile.Close()

	zipfile := zip.NewWriter(tempfile)
	defer zipfile.Close()

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	detectContentType := func(path string) (string, error) {
		f, err := os.Open(path)
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		if err != nil {
			return "", err
		}
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		defer f.Close()
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		var b bytes.Buffer
		b.Grow(512)
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		if _, err := io.CopyN(&b, f, 512); err != nil && !errors.Is(err, io.EOF) {
			return "", err
		}

		contentType, _, _ := strings.Cut(http.DetectContentType(b.Bytes()), ";")
		return contentType, nil
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	}

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	glob := func(pattern, contentType string) ([]string, error) {
		matches, err := filepath.Glob(pattern)
		if err != nil {
			return nil, err
		}

		for _, safetensor := range matches {
			if ct, err := detectContentType(safetensor); err != nil {
				return nil, err
			} else if ct != contentType {
				return nil, fmt.Errorf("invalid content type: expected %s for %s", ct, safetensor)
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			}
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		}

		return matches, nil
	}

	var files []string
	if st, _ := glob(filepath.Join(path, "model*.safetensors"), "application/octet-stream"); len(st) > 0 {
		// safetensors files might be unresolved git lfs references; skip if they are
		// covers model-x-of-y.safetensors, model.fp32-x-of-y.safetensors, model.safetensors
		files = append(files, st...)
	} else if pt, _ := glob(filepath.Join(path, "pytorch_model*.bin"), "application/zip"); len(pt) > 0 {
		// pytorch files might also be unresolved git lfs references; skip if they are
		// covers pytorch_model-x-of-y.bin, pytorch_model.fp32-x-of-y.bin, pytorch_model.bin
		files = append(files, pt...)
	} else if pt, _ := glob(filepath.Join(path, "consolidated*.pth"), "application/octet-stream"); len(pt) > 0 {
		// pytorch files might also be unresolved git lfs references; skip if they are
		// covers consolidated.x.pth, consolidated.pth
		files = append(files, pt...)
	} else {
		return "", errors.New("no safetensors or torch files found")
	}

	// add configuration files, json files are detected as text/plain
	js, err := glob(filepath.Join(path, "*.json"), "text/plain")
	if err != nil {
		return "", err
	}
	files = append(files, js...)

	if tks, _ := glob(filepath.Join(path, "tokenizer.model"), "application/octet-stream"); len(tks) > 0 {
		// add tokenizer.model if it exists, tokenizer.json is automatically picked up by the previous glob
		// tokenizer.model might be a unresolved git lfs reference; error if it is
		files = append(files, tks...)
	} else if tks, _ := glob(filepath.Join(path, "**/tokenizer.model"), "text/plain"); len(tks) > 0 {
		// some times tokenizer.model is in a subdirectory (e.g. meta-llama/Meta-Llama-3-8B)
		files = append(files, tks...)
	}

	for _, file := range files {
		f, err := os.Open(file)
		if err != nil {
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			return "", err
		}
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		defer f.Close()
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		fi, err := f.Stat()
		if err != nil {
			return "", err
		}

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		zfi, err := zip.FileInfoHeader(fi)
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		if err != nil {
			return "", err
		}

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		zf, err := zipfile.CreateHeader(zfi)
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		if err != nil {
			return "", err
		}

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		if _, err := io.Copy(zf, f); err != nil {
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			return "", err
		}
	}

	return tempfile.Name(), nil
}

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func createBlob(cmd *cobra.Command, client *api.Client, path string) (string, error) {
	bin, err := os.Open(path)
	if err != nil {
		return "", err
	}
	defer bin.Close()

	hash := sha256.New()
	if _, err := io.Copy(hash, bin); err != nil {
		return "", err
	}
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	if _, err := bin.Seek(0, io.SeekStart); err != nil {
		return "", err
	}
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	digest := fmt.Sprintf("sha256:%x", hash.Sum(nil))
	if err = client.CreateBlob(cmd.Context(), digest, bin); err != nil {
		return "", err
	}
	return digest, nil
}

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func RunHandler(cmd *cobra.Command, args []string) error {
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	client, err := api.ClientFromEnvironment()
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	if err != nil {
		return err
	}

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	name := args[0]
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	// check if the model exists on the server
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	show, err := client.Show(cmd.Context(), &api.ShowRequest{Name: name})
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	var statusError api.StatusError
	switch {
	case errors.As(err, &statusError) && statusError.StatusCode == http.StatusNotFound:
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		if err := PullHandler(cmd, []string{name}); err != nil {
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			return err
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		}
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		show, err = client.Show(cmd.Context(), &api.ShowRequest{Name: name})
		if err != nil {
			return err
		}
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	case err != nil:
		return err
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	}

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	interactive := true

	opts := runOptions{
		Model:       args[0],
		WordWrap:    os.Getenv("TERM") == "xterm-256color",
		Options:     map[string]interface{}{},
		MultiModal:  slices.Contains(show.Details.Families, "clip"),
		ParentModel: show.Details.ParentModel,
	}

	format, err := cmd.Flags().GetString("format")
	if err != nil {
		return err
	}
	opts.Format = format

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	keepAlive, err := cmd.Flags().GetString("keepalive")
	if err != nil {
		return err
	}
	if keepAlive != "" {
		d, err := time.ParseDuration(keepAlive)
		if err != nil {
			return err
		}
		opts.KeepAlive = &api.Duration{Duration: d}
	}

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	prompts := args[1:]
	// prepend stdin to the prompt if provided
	if !term.IsTerminal(int(os.Stdin.Fd())) {
		in, err := io.ReadAll(os.Stdin)
		if err != nil {
			return err
		}

		prompts = append([]string{string(in)}, prompts...)
		opts.WordWrap = false
		interactive = false
	}
	opts.Prompt = strings.Join(prompts, " ")
	if len(prompts) > 0 {
		interactive = false
	}

	nowrap, err := cmd.Flags().GetBool("nowordwrap")
	if err != nil {
		return err
	}
	opts.WordWrap = !nowrap

	if !interactive {
		return generate(cmd, opts)
	}

	return generateInteractive(cmd, opts)
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}

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func errFromUnknownKey(unknownKeyErr error) error {
	// find SSH public key in the error message
	sshKeyPattern := `ssh-\w+ [^\s"]+`
	re := regexp.MustCompile(sshKeyPattern)
	matches := re.FindStringSubmatch(unknownKeyErr.Error())

	if len(matches) > 0 {
		serverPubKey := matches[0]

		localPubKey, err := auth.GetPublicKey()
		if err != nil {
			return unknownKeyErr
		}

		if runtime.GOOS == "linux" && serverPubKey != localPubKey {
			// try the ollama service public key
			svcPubKey, err := os.ReadFile("/usr/share/ollama/.ollama/id_ed25519.pub")
			if err != nil {
				return unknownKeyErr
			}
			localPubKey = strings.TrimSpace(string(svcPubKey))
		}

		// check if the returned public key matches the local public key, this prevents adding a remote key to the user's account
		if serverPubKey != localPubKey {
			return unknownKeyErr
		}

		var msg strings.Builder
		msg.WriteString(unknownKeyErr.Error())
		msg.WriteString("\n\nYour ollama key is:\n")
		msg.WriteString(localPubKey)
		msg.WriteString("\nAdd your key at:\n")
		msg.WriteString("https://ollama.com/settings/keys")

		return errors.New(msg.String())
	}

	return unknownKeyErr
}

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func PushHandler(cmd *cobra.Command, args []string) error {
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	client, err := api.ClientFromEnvironment()
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	if err != nil {
		return err
	}
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	insecure, err := cmd.Flags().GetBool("insecure")
	if err != nil {
		return err
	}

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	p := progress.NewProgress(os.Stderr)
	defer p.Stop()

	bars := make(map[string]*progress.Bar)
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	var status string
	var spinner *progress.Spinner
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	fn := func(resp api.ProgressResponse) error {
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		if resp.Digest != "" {
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			if spinner != nil {
				spinner.Stop()
			}
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			bar, ok := bars[resp.Digest]
			if !ok {
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				bar = progress.NewBar(fmt.Sprintf("pushing %s...", resp.Digest[7:19]), resp.Total, resp.Completed)
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				bars[resp.Digest] = bar
				p.Add(resp.Digest, bar)
			}

			bar.Set(resp.Completed)
		} else if status != resp.Status {
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			if spinner != nil {
				spinner.Stop()
			}
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			status = resp.Status
			spinner = progress.NewSpinner(status)
			p.Add(status, spinner)
		}

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		return nil
	}

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	request := api.PushRequest{Name: args[0], Insecure: insecure}
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	if err := client.Push(cmd.Context(), &request, fn); err != nil {
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		if spinner != nil {
			spinner.Stop()
		}
		if strings.Contains(err.Error(), "access denied") {
			return errors.New("you are not authorized to push to this namespace, create the model under a namespace you own")
		}
		host := model.ParseName(args[0]).Host
		isOllamaHost := strings.HasSuffix(host, ".ollama.ai") || strings.HasSuffix(host, ".ollama.com")
		if strings.Contains(err.Error(), errtypes.UnknownOllamaKeyErrMsg) && isOllamaHost {
			// the user has not added their ollama key to ollama.com
			// re-throw an error with a more user-friendly message
			return errFromUnknownKey(err)
		}

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		return err
	}

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	spinner.Stop()
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	return nil
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}

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func ListHandler(cmd *cobra.Command, args []string) error {
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	client, err := api.ClientFromEnvironment()
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	if err != nil {
		return err
	}
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	models, err := client.List(cmd.Context())
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	if err != nil {
		return err
	}

	var data [][]string

	for _, m := range models.Models {
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		if len(args) == 0 || strings.HasPrefix(m.Name, args[0]) {
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			data = append(data, []string{m.Name, m.Digest[:12], format.HumanBytes(m.Size), format.HumanTime(m.ModifiedAt, "Never")})
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		}
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	}

	table := tablewriter.NewWriter(os.Stdout)
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	table.SetHeader([]string{"NAME", "ID", "SIZE", "MODIFIED"})
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	table.SetHeaderAlignment(tablewriter.ALIGN_LEFT)
	table.SetAlignment(tablewriter.ALIGN_LEFT)
	table.SetHeaderLine(false)
	table.SetBorder(false)
	table.SetNoWhiteSpace(true)
	table.SetTablePadding("\t")
	table.AppendBulk(data)
	table.Render()

	return nil
}

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func ListRunningHandler(cmd *cobra.Command, args []string) error {
	client, err := api.ClientFromEnvironment()
	if err != nil {
		return err
	}

	models, err := client.ListRunning(cmd.Context())
	if err != nil {
		return err
	}

	var data [][]string

	for _, m := range models.Models {
		if len(args) == 0 || strings.HasPrefix(m.Name, args[0]) {
			var procStr string
			switch {
			case m.SizeVRAM == 0:
				procStr = "100% CPU"
			case m.SizeVRAM == m.Size:
				procStr = "100% GPU"
			case m.SizeVRAM > m.Size || m.Size == 0:
				procStr = "Unknown"
			default:
				sizeCPU := m.Size - m.SizeVRAM
				cpuPercent := math.Round(float64(sizeCPU) / float64(m.Size) * 100)
				procStr = fmt.Sprintf("%d%%/%d%% CPU/GPU", int(cpuPercent), int(100-cpuPercent))
			}
			data = append(data, []string{m.Name, m.Digest[:12], format.HumanBytes(m.Size), procStr, format.HumanTime(m.ExpiresAt, "Never")})
		}
	}

	table := tablewriter.NewWriter(os.Stdout)
	table.SetHeader([]string{"NAME", "ID", "SIZE", "PROCESSOR", "UNTIL"})
	table.SetHeaderAlignment(tablewriter.ALIGN_LEFT)
	table.SetAlignment(tablewriter.ALIGN_LEFT)
	table.SetHeaderLine(false)
	table.SetBorder(false)
	table.SetNoWhiteSpace(true)
	table.SetTablePadding("\t")
	table.AppendBulk(data)
	table.Render()

	return nil
}

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func DeleteHandler(cmd *cobra.Command, args []string) error {
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	client, err := api.ClientFromEnvironment()
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	if err != nil {
		return err
	}
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	for _, name := range args {
		req := api.DeleteRequest{Name: name}
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		if err := client.Delete(cmd.Context(), &req); err != nil {
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			return err
		}
		fmt.Printf("deleted '%s'\n", name)
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	}
	return nil
}

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func ShowHandler(cmd *cobra.Command, args []string) error {
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	client, err := api.ClientFromEnvironment()
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	if err != nil {
		return err
	}

	if len(args) != 1 {
		return errors.New("missing model name")
	}

	license, errLicense := cmd.Flags().GetBool("license")
	modelfile, errModelfile := cmd.Flags().GetBool("modelfile")
	parameters, errParams := cmd.Flags().GetBool("parameters")
	system, errSystem := cmd.Flags().GetBool("system")
	template, errTemplate := cmd.Flags().GetBool("template")

	for _, boolErr := range []error{errLicense, errModelfile, errParams, errSystem, errTemplate} {
		if boolErr != nil {
			return errors.New("error retrieving flags")
		}
	}

	flagsSet := 0
	showType := ""

	if license {
		flagsSet++
		showType = "license"
	}

	if modelfile {
		flagsSet++
		showType = "modelfile"
	}

	if parameters {
		flagsSet++
		showType = "parameters"
	}

	if system {
		flagsSet++
		showType = "system"
	}

	if template {
		flagsSet++
		showType = "template"
	}

	if flagsSet > 1 {
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		return errors.New("only one of '--license', '--modelfile', '--parameters', '--system', or '--template' can be specified")
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	} else if flagsSet == 0 {
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		return errors.New("one of '--license', '--modelfile', '--parameters', '--system', or '--template' must be specified")
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	}

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	req := api.ShowRequest{Name: args[0]}
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	resp, err := client.Show(cmd.Context(), &req)
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	if err != nil {
		return err
	}

	switch showType {
	case "license":
		fmt.Println(resp.License)
	case "modelfile":
		fmt.Println(resp.Modelfile)
	case "parameters":
		fmt.Println(resp.Parameters)
	case "system":
		fmt.Println(resp.System)
	case "template":
		fmt.Println(resp.Template)
	}

	return nil
}

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func CopyHandler(cmd *cobra.Command, args []string) error {
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	client, err := api.ClientFromEnvironment()
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	if err != nil {
		return err
	}
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	req := api.CopyRequest{Source: args[0], Destination: args[1]}
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	if err := client.Copy(cmd.Context(), &req); err != nil {
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		return err
	}
	fmt.Printf("copied '%s' to '%s'\n", args[0], args[1])
	return nil
}

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func PullHandler(cmd *cobra.Command, args []string) error {
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	insecure, err := cmd.Flags().GetBool("insecure")
	if err != nil {
		return err
	}

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	client, err := api.ClientFromEnvironment()
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	if err != nil {
		return err
	}
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	p := progress.NewProgress(os.Stderr)
	defer p.Stop()

	bars := make(map[string]*progress.Bar)

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	var status string
	var spinner *progress.Spinner
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	fn := func(resp api.ProgressResponse) error {
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		if resp.Digest != "" {
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			if spinner != nil {
				spinner.Stop()
			}
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			bar, ok := bars[resp.Digest]
			if !ok {
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				bar = progress.NewBar(fmt.Sprintf("pulling %s...", resp.Digest[7:19]), resp.Total, resp.Completed)
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				bars[resp.Digest] = bar
				p.Add(resp.Digest, bar)
			}

			bar.Set(resp.Completed)
		} else if status != resp.Status {
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			if spinner != nil {
				spinner.Stop()
			}
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			status = resp.Status
			spinner = progress.NewSpinner(status)
			p.Add(status, spinner)
		}

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		return nil
	}
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	request := api.PullRequest{Name: args[0], Insecure: insecure}
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	if err := client.Pull(cmd.Context(), &request, fn); err != nil {
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		return err
	}

	return nil
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}

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type generateContextKey string

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type runOptions struct {
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	Model       string
	ParentModel string
	Prompt      string
	Messages    []api.Message
	WordWrap    bool
	Format      string
	System      string
	Template    string
	Images      []api.ImageData
	Options     map[string]interface{}
	MultiModal  bool
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	KeepAlive   *api.Duration
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}

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type displayResponseState struct {
	lineLength int
	wordBuffer string
}

func displayResponse(content string, wordWrap bool, state *displayResponseState) {
	termWidth, _, _ := term.GetSize(int(os.Stdout.Fd()))
	if wordWrap && termWidth >= 10 {
		for _, ch := range content {
			if state.lineLength+1 > termWidth-5 {
				if len(state.wordBuffer) > termWidth-10 {
					fmt.Printf("%s%c", state.wordBuffer, ch)
					state.wordBuffer = ""
					state.lineLength = 0
					continue
				}

				// backtrack the length of the last word and clear to the end of the line
				fmt.Printf("\x1b[%dD\x1b[K\n", len(state.wordBuffer))
				fmt.Printf("%s%c", state.wordBuffer, ch)
				state.lineLength = len(state.wordBuffer) + 1
			} else {
				fmt.Print(string(ch))
				state.lineLength += 1

				switch ch {
				case ' ':
					state.wordBuffer = ""
				case '\n':
					state.lineLength = 0
				default:
					state.wordBuffer += string(ch)
				}
			}
		}
	} else {
		fmt.Printf("%s%s", state.wordBuffer, content)
		if len(state.wordBuffer) > 0 {
			state.wordBuffer = ""
		}
	}
}

func chat(cmd *cobra.Command, opts runOptions) (*api.Message, error) {
	client, err := api.ClientFromEnvironment()
	if err != nil {
		return nil, err
	}

	p := progress.NewProgress(os.Stderr)
	defer p.StopAndClear()

	spinner := progress.NewSpinner("")
	p.Add("", spinner)

	cancelCtx, cancel := context.WithCancel(cmd.Context())
	defer cancel()

	sigChan := make(chan os.Signal, 1)
	signal.Notify(sigChan, syscall.SIGINT)

	go func() {
		<-sigChan
		cancel()
	}()

	var state *displayResponseState = &displayResponseState{}
	var latest api.ChatResponse
	var fullResponse strings.Builder
	var role string

	fn := func(response api.ChatResponse) error {
		p.StopAndClear()

		latest = response

		role = response.Message.Role
		content := response.Message.Content
		fullResponse.WriteString(content)

		displayResponse(content, opts.WordWrap, state)

		return nil
	}

	req := &api.ChatRequest{
		Model:    opts.Model,
		Messages: opts.Messages,
		Format:   opts.Format,
		Options:  opts.Options,
	}

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	if opts.KeepAlive != nil {
		req.KeepAlive = opts.KeepAlive
	}

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	if err := client.Chat(cancelCtx, req, fn); err != nil {
		if errors.Is(err, context.Canceled) {
			return nil, nil
		}
		return nil, err
	}

	if len(opts.Messages) > 0 {
		fmt.Println()
		fmt.Println()
	}

	verbose, err := cmd.Flags().GetBool("verbose")
	if err != nil {
		return nil, err
	}

	if verbose {
		latest.Summary()
	}

	return &api.Message{Role: role, Content: fullResponse.String()}, nil
}

func generate(cmd *cobra.Command, opts runOptions) error {
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	client, err := api.ClientFromEnvironment()
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	if err != nil {
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		return err
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	}
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	p := progress.NewProgress(os.Stderr)
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	defer p.StopAndClear()
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	spinner := progress.NewSpinner("")
	p.Add("", spinner)

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	var latest api.GenerateResponse

	generateContext, ok := cmd.Context().Value(generateContextKey("context")).([]int)
	if !ok {
		generateContext = []int{}
	}

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	ctx, cancel := context.WithCancel(cmd.Context())
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	defer cancel()

	sigChan := make(chan os.Signal, 1)
	signal.Notify(sigChan, syscall.SIGINT)

	go func() {
		<-sigChan
		cancel()
	}()

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	var state *displayResponseState = &displayResponseState{}
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	fn := func(response api.GenerateResponse) error {
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		p.StopAndClear()
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		latest = response
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		content := response.Response
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		displayResponse(content, opts.WordWrap, state)
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		return nil
	}
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	if opts.MultiModal {
		opts.Prompt, opts.Images, err = extractFileData(opts.Prompt)
		if err != nil {
			return err
		}
	}

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	request := api.GenerateRequest{
		Model:    opts.Model,
		Prompt:   opts.Prompt,
		Context:  generateContext,
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		Images:   opts.Images,
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		Format:   opts.Format,
		System:   opts.System,
		Template: opts.Template,
		Options:  opts.Options,
	}

	if err := client.Generate(ctx, &request, fn); err != nil {
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		if errors.Is(err, context.Canceled) {
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			return nil
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		}
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		return err
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	}
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	if opts.Prompt != "" {
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		fmt.Println()
		fmt.Println()
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	}
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	if !latest.Done {
		return nil
	}

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	verbose, err := cmd.Flags().GetBool("verbose")
	if err != nil {
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		return err
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	}
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	if verbose {
		latest.Summary()
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	}
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	ctx = context.WithValue(cmd.Context(), generateContextKey("context"), latest.Context)
	cmd.SetContext(ctx)

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	return nil
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}

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func RunServer(cmd *cobra.Command, _ []string) error {
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	// retrieve the OLLAMA_HOST environment variable
	ollamaHost, err := api.GetOllamaHost()
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	if err != nil {
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		return err
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	}
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	if err := initializeKeypair(); err != nil {
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		return err
	}

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	ln, err := net.Listen("tcp", net.JoinHostPort(ollamaHost.Host, ollamaHost.Port))
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	if err != nil {
		return err
	}
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	err = server.Serve(ln)
	if errors.Is(err, http.ErrServerClosed) {
		return nil
	}

	return err
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}

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func initializeKeypair() error {
	home, err := os.UserHomeDir()
	if err != nil {
		return err
	}

	privKeyPath := filepath.Join(home, ".ollama", "id_ed25519")
	pubKeyPath := filepath.Join(home, ".ollama", "id_ed25519.pub")

	_, err = os.Stat(privKeyPath)
	if os.IsNotExist(err) {
		fmt.Printf("Couldn't find '%s'. Generating new private key.\n", privKeyPath)
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		cryptoPublicKey, cryptoPrivateKey, err := ed25519.GenerateKey(rand.Reader)
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		if err != nil {
			return err
		}

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		privateKeyBytes, err := ssh.MarshalPrivateKey(cryptoPrivateKey, "")
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		if err != nil {
			return err
		}

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		if err := os.MkdirAll(filepath.Dir(privKeyPath), 0o755); err != nil {
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			return fmt.Errorf("could not create directory %w", err)
		}

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		if err := os.WriteFile(privKeyPath, pem.EncodeToMemory(privateKeyBytes), 0o600); err != nil {
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			return err
		}

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		sshPublicKey, err := ssh.NewPublicKey(cryptoPublicKey)
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		if err != nil {
			return err
		}

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		publicKeyBytes := ssh.MarshalAuthorizedKey(sshPublicKey)
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		if err := os.WriteFile(pubKeyPath, publicKeyBytes, 0o644); err != nil {
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			return err
		}

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		fmt.Printf("Your new public key is: \n\n%s\n", publicKeyBytes)
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	}
	return nil
}

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//nolint:unused
func waitForServer(ctx context.Context, client *api.Client) error {
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	// wait for the server to start
	timeout := time.After(5 * time.Second)
	tick := time.Tick(500 * time.Millisecond)
	for {
		select {
		case <-timeout:
			return errors.New("timed out waiting for server to start")
		case <-tick:
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			if err := client.Heartbeat(ctx); err == nil {
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				return nil // server has started
			}
		}
	}
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}

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func checkServerHeartbeat(cmd *cobra.Command, _ []string) error {
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	client, err := api.ClientFromEnvironment()
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	if err != nil {
		return err
	}
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	if err := client.Heartbeat(cmd.Context()); err != nil {
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		if !strings.Contains(err.Error(), " refused") {
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			return err
		}
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		if err := startApp(cmd.Context(), client); err != nil {
			return fmt.Errorf("could not connect to ollama app, is it running?")
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		}
	}
	return nil
}

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func versionHandler(cmd *cobra.Command, _ []string) {
	client, err := api.ClientFromEnvironment()
	if err != nil {
		return
	}

	serverVersion, err := client.Version(cmd.Context())
	if err != nil {
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		fmt.Println("Warning: could not connect to a running Ollama instance")
	}

	if serverVersion != "" {
		fmt.Printf("ollama version is %s\n", serverVersion)
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	}

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	if serverVersion != version.Version {
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		fmt.Printf("Warning: client version is %s\n", version.Version)
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	}
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}

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func appendHostEnvDocs(cmd *cobra.Command) {
	const hostEnvDocs = `
Environment Variables:
      OLLAMA_HOST        The host:port or base URL of the Ollama server (e.g. http://localhost:11434)
`
	cmd.SetUsageTemplate(cmd.UsageTemplate() + hostEnvDocs)
}

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func NewCLI() *cobra.Command {
	log.SetFlags(log.LstdFlags | log.Lshortfile)
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	cobra.EnableCommandSorting = false
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	if runtime.GOOS == "windows" {
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		console.ConsoleFromFile(os.Stdin) //nolint:errcheck
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	}

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	rootCmd := &cobra.Command{
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		Use:           "ollama",
		Short:         "Large language model runner",
		SilenceUsage:  true,
		SilenceErrors: true,
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		CompletionOptions: cobra.CompletionOptions{
			DisableDefaultCmd: true,
		},
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		Run: func(cmd *cobra.Command, args []string) {
			if version, _ := cmd.Flags().GetBool("version"); version {
				versionHandler(cmd, args)
				return
			}

			cmd.Print(cmd.UsageString())
		},
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	}

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	rootCmd.Flags().BoolP("version", "v", false, "Show version information")
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	createCmd := &cobra.Command{
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		Use:     "create MODEL",
		Short:   "Create a model from a Modelfile",
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		Args:    cobra.ExactArgs(1),
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		PreRunE: checkServerHeartbeat,
		RunE:    CreateHandler,
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	}

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	createCmd.Flags().StringP("file", "f", "Modelfile", "Name of the Modelfile")
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	createCmd.Flags().StringP("quantize", "q", "", "Quantize model to this level (e.g. q4_0)")
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	showCmd := &cobra.Command{
		Use:     "show MODEL",
		Short:   "Show information for a model",
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		Args:    cobra.ExactArgs(1),
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		PreRunE: checkServerHeartbeat,
		RunE:    ShowHandler,
	}

	showCmd.Flags().Bool("license", false, "Show license of a model")
	showCmd.Flags().Bool("modelfile", false, "Show Modelfile of a model")
	showCmd.Flags().Bool("parameters", false, "Show parameters of a model")
	showCmd.Flags().Bool("template", false, "Show template of a model")
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	showCmd.Flags().Bool("system", false, "Show system message of a model")
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	runCmd := &cobra.Command{
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		Use:     "run MODEL [PROMPT]",
		Short:   "Run a model",
		Args:    cobra.MinimumNArgs(1),
		PreRunE: checkServerHeartbeat,
		RunE:    RunHandler,
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	}

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	runCmd.Flags().String("keepalive", "", "Duration to keep a model loaded (e.g. 5m)")
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	runCmd.Flags().Bool("verbose", false, "Show timings for response")
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	runCmd.Flags().Bool("insecure", false, "Use an insecure registry")
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	runCmd.Flags().Bool("nowordwrap", false, "Don't wrap words to the next line automatically")
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	runCmd.Flags().String("format", "", "Response format (e.g. json)")
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	serveCmd := &cobra.Command{
		Use:     "serve",
		Aliases: []string{"start"},
		Short:   "Start ollama",
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		Args:    cobra.ExactArgs(0),
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		RunE:    RunServer,
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	}
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	serveCmd.SetUsageTemplate(serveCmd.UsageTemplate() + `
Environment Variables:

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    OLLAMA_HOST         The host:port to bind to (default "127.0.0.1:11434")
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    OLLAMA_ORIGINS      A comma separated list of allowed origins
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    OLLAMA_MODELS       The path to the models directory (default "~/.ollama/models")
    OLLAMA_KEEP_ALIVE   The duration that models stay loaded in memory (default "5m")
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    OLLAMA_DEBUG        Set to 1 to enable additional debug logging
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`)
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	pullCmd := &cobra.Command{
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		Use:     "pull MODEL",
		Short:   "Pull a model from a registry",
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		Args:    cobra.ExactArgs(1),
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		PreRunE: checkServerHeartbeat,
		RunE:    PullHandler,
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	}

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	pullCmd.Flags().Bool("insecure", false, "Use an insecure registry")

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	pushCmd := &cobra.Command{
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		Use:     "push MODEL",
		Short:   "Push a model to a registry",
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		Args:    cobra.ExactArgs(1),
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		PreRunE: checkServerHeartbeat,
		RunE:    PushHandler,
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	}

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	pushCmd.Flags().Bool("insecure", false, "Use an insecure registry")

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	listCmd := &cobra.Command{
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		Use:     "list",
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		Aliases: []string{"ls"},
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		Short:   "List models",
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		PreRunE: checkServerHeartbeat,
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		RunE:    ListHandler,
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	}
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	psCmd := &cobra.Command{
		Use:     "ps",
		Short:   "List running models",
		PreRunE: checkServerHeartbeat,
		RunE:    ListRunningHandler,
	}

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	copyCmd := &cobra.Command{
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		Use:     "cp SOURCE DESTINATION",
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		Short:   "Copy a model",
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		Args:    cobra.ExactArgs(2),
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		PreRunE: checkServerHeartbeat,
		RunE:    CopyHandler,
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	}

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	deleteCmd := &cobra.Command{
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		Use:     "rm MODEL [MODEL...]",
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		Short:   "Remove a model",
		Args:    cobra.MinimumNArgs(1),
		PreRunE: checkServerHeartbeat,
		RunE:    DeleteHandler,
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	}

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	for _, cmd := range []*cobra.Command{
		createCmd,
		showCmd,
		runCmd,
		pullCmd,
		pushCmd,
		listCmd,
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		psCmd,
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		copyCmd,
		deleteCmd,
	} {
		appendHostEnvDocs(cmd)
	}

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	rootCmd.AddCommand(
		serveCmd,
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		createCmd,
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		showCmd,
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		runCmd,
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		pullCmd,
		pushCmd,
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		listCmd,
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		psCmd,
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		copyCmd,
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		deleteCmd,
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	)

	return rootCmd
}