mirror of https://github.com/harness/drone.git
143 lines
3.8 KiB
Go
143 lines
3.8 KiB
Go
// Copyright 2023 Harness, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package scm
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import (
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"bytes"
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"context"
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"fmt"
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"io"
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"net/url"
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"os"
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"path"
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"strings"
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"github.com/harness/gitness/git/command"
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"github.com/harness/gitness/types"
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"github.com/google/uuid"
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"github.com/rs/zerolog/log"
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)
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var _ Provider = (*GenericSCM)(nil)
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type GenericSCM struct {
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}
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func NewGenericSCM() *GenericSCM {
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return &GenericSCM{}
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}
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func (s *GenericSCM) ListBranches(
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_ context.Context,
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_ *BranchFilter,
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_ *ResolvedCredentials,
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) ([]Branch, error) {
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return []Branch{}, nil
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}
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func (s *GenericSCM) ListRepositories(
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_ context.Context,
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_ *RepositoryFilter,
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_ *ResolvedCredentials,
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) ([]Repository, error) {
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return []Repository{}, nil
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}
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func (s *GenericSCM) GetFileContent(
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ctx context.Context,
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gitspaceConfig types.GitspaceConfig,
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filePath string,
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_ *ResolvedCredentials,
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) ([]byte, error) {
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gitWorkingDirectory := "/tmp/git/"
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cloneDir := gitWorkingDirectory + uuid.New().String()
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err := os.MkdirAll(cloneDir, os.ModePerm)
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if err != nil {
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return nil, fmt.Errorf("error creating directory %s: %w", cloneDir, err)
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}
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defer func() {
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err = os.RemoveAll(cloneDir)
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if err != nil {
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log.Ctx(ctx).Warn().Err(err).Msg("Unable to remove working directory")
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}
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}()
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log.Info().Msg("Cloning the repository...")
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cmd := command.New("clone",
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command.WithFlag("--branch", gitspaceConfig.CodeRepo.Branch),
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command.WithFlag("--no-checkout"),
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command.WithFlag("--depth", "1"),
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command.WithArg(gitspaceConfig.CodeRepo.URL),
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command.WithArg(cloneDir),
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)
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if err := cmd.Run(ctx, command.WithDir(cloneDir)); err != nil {
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return nil, fmt.Errorf("failed to clone repository %s: %w", gitspaceConfig.CodeRepo.URL, err)
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}
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var lsTreeOutput bytes.Buffer
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lsTreeCmd := command.New("ls-tree",
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command.WithArg("HEAD"),
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command.WithArg(filePath),
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)
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if err := lsTreeCmd.Run(ctx, command.WithDir(cloneDir), command.WithStdout(&lsTreeOutput)); err != nil {
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return nil, fmt.Errorf("failed to list files in repository %s: %w", cloneDir, err)
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}
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if lsTreeOutput.Len() == 0 {
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log.Info().Msg("File not found, returning empty devcontainerConfig")
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return nil, nil
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}
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fields := strings.Fields(lsTreeOutput.String())
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blobSHA := fields[2]
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var catFileOutput bytes.Buffer
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catFileCmd := command.New("cat-file", command.WithFlag("-p"), command.WithArg(blobSHA))
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err = catFileCmd.Run(
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ctx,
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command.WithDir(cloneDir),
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command.WithStderr(io.Discard),
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command.WithStdout(&catFileOutput),
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)
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if err != nil {
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return nil, fmt.Errorf("failed to read devcontainer file from path %s: %w", filePath, err)
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}
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return catFileOutput.Bytes(), nil
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}
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func (s *GenericSCM) ResolveCredentials(
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_ context.Context,
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gitspaceConfig types.GitspaceConfig,
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) (*ResolvedCredentials, error) {
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var resolvedCredentials = &ResolvedCredentials{
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Branch: gitspaceConfig.Branch,
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CloneURL: gitspaceConfig.CodeRepo.URL,
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}
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repoURL, err := url.Parse(gitspaceConfig.CodeRepo.URL)
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if err != nil {
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return nil, fmt.Errorf("failed to parse repository URL %s: %w", gitspaceConfig.CodeRepo.URL, err)
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}
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repoName := strings.TrimSuffix(path.Base(repoURL.Path), ".git")
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resolvedCredentials.RepoName = repoName
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return resolvedCredentials, err
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}
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func (s *GenericSCM) GetBranchURL(_ string, repoURL string, _ string) (string, error) {
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return repoURL, nil
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}
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