mirror of https://github.com/databricks/cli.git
131 lines
3.3 KiB
Go
131 lines
3.3 KiB
Go
package filer
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import (
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"bytes"
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"context"
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"encoding/json"
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"fmt"
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"io"
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"net/http"
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"path"
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"strings"
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"github.com/databricks/databricks-sdk-go"
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"github.com/databricks/databricks-sdk-go/apierr"
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"github.com/databricks/databricks-sdk-go/client"
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"github.com/databricks/databricks-sdk-go/service/workspace"
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"golang.org/x/exp/slices"
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)
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// WorkspaceFilesClient implements the files-in-workspace API.
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// NOTE: This API is available for files under /Repos if a workspace has files-in-repos enabled.
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// It can access any workspace path if files-in-workspace is enabled.
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type WorkspaceFilesClient struct {
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workspaceClient *databricks.WorkspaceClient
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apiClient *client.DatabricksClient
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// File operations will be relative to this path.
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root RootPath
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}
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func NewWorkspaceFilesClient(w *databricks.WorkspaceClient, root string) (Filer, error) {
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apiClient, err := client.New(w.Config)
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if err != nil {
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return nil, err
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}
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return &WorkspaceFilesClient{
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workspaceClient: w,
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apiClient: apiClient,
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root: NewRootPath(root),
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}, nil
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}
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func (w *WorkspaceFilesClient) Write(ctx context.Context, name string, reader io.Reader, mode ...WriteMode) error {
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absPath, err := w.root.Join(name)
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if err != nil {
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return err
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}
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// Remove leading "/" so we can use it in the URL.
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overwrite := slices.Contains(mode, OverwriteIfExists)
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urlPath := fmt.Sprintf(
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"/api/2.0/workspace-files/import-file/%s?overwrite=%t",
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strings.TrimLeft(absPath, "/"),
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overwrite,
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)
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// Buffer the file contents because we may need to retry below and we cannot read twice.
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body, err := io.ReadAll(reader)
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if err != nil {
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return err
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}
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err = w.apiClient.Do(ctx, http.MethodPost, urlPath, body, nil)
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// If we got an API error we deal with it below.
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aerr, ok := err.(apierr.APIError)
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if !ok {
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return err
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}
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// This API returns a 404 if the parent directory does not exist.
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if aerr.StatusCode == http.StatusNotFound {
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if !slices.Contains(mode, CreateParentDirectories) {
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return NoSuchDirectoryError{path.Dir(absPath)}
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}
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// Create parent directory.
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err = w.workspaceClient.Workspace.MkdirsByPath(ctx, path.Dir(absPath))
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if err != nil {
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return fmt.Errorf("unable to mkdir to write file %s: %w", absPath, err)
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}
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// Retry without CreateParentDirectories mode flag.
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return w.Write(ctx, name, bytes.NewReader(body), sliceWithout(mode, CreateParentDirectories)...)
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}
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// This API returns 409 if the file already exists.
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if aerr.StatusCode == http.StatusConflict {
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return FileAlreadyExistsError{absPath}
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}
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return err
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}
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func (w *WorkspaceFilesClient) Read(ctx context.Context, name string) (io.Reader, error) {
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absPath, err := w.root.Join(name)
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if err != nil {
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return nil, err
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}
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// Remove leading "/" so we can use it in the URL.
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urlPath := fmt.Sprintf(
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"/api/2.0/workspace-files/%s",
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strings.TrimLeft(absPath, "/"),
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)
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// Update to []byte after https://github.com/databricks/databricks-sdk-go/pull/247 is merged.
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var res json.RawMessage
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err = w.apiClient.Do(ctx, http.MethodGet, urlPath, nil, &res)
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if err != nil {
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return nil, err
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}
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return bytes.NewReader(res), nil
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}
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func (w *WorkspaceFilesClient) Delete(ctx context.Context, name string) error {
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absPath, err := w.root.Join(name)
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if err != nil {
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return err
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}
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return w.workspaceClient.Workspace.Delete(ctx, workspace.Delete{
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Path: absPath,
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Recursive: false,
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})
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}
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