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Go
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import ( "fmt" "strings"
"tangled.org/core/api/tangled" "tangled.org/core/workflow")
type CloneStep struct { name string kind StepKind commands []string}
func (s CloneStep) Name() string { return s.name}
func (s CloneStep) Commands() []string { return s.commands}
func (s CloneStep) Command() string { return strings.Join(s.commands, "\n")}
func (s CloneStep) Kind() StepKind { return s.kind}
// BuildCloneStep generates git clone commands.// The caller must ensure the current working directory is set to the desired// workspace directory before executing these commands.//// The generated commands are:// - git init// - git remote add origin <url>// - git fetch --depth=<d> --recurse-submodules=<yes|no> <sha>// - git checkout FETCH_HEAD//// Supports all trigger types (push, PR, manual) and clone options.func BuildCloneStep(twf tangled.Pipeline_Workflow, tr tangled.Pipeline_TriggerMetadata, dev bool) CloneStep { if twf.Clone != nil && twf.Clone.Skip { return CloneStep{} }
commitSHA, err := extractCommitSHA(tr) if err != nil { return CloneStep{ kind: StepKindSystem, name: "Clone repository into workspace (error)", commands: []string{fmt.Sprintf("echo 'Failed to get clone info: %s' && exit 1", err.Error())}, } }
repoURL := BuildRepoURL(tr.Repo, dev)
var cloneOpts tangled.Pipeline_CloneOpts if twf.Clone != nil { cloneOpts = *twf.Clone } fetchArgs := buildFetchArgs(cloneOpts, commitSHA)
return CloneStep{ kind: StepKindSystem, name: "Clone repository into workspace", commands: []string{ "git init", fmt.Sprintf("git remote add origin %s", repoURL), fmt.Sprintf("git fetch %s", strings.Join(fetchArgs, " ")), "git checkout FETCH_HEAD", }, }}
// extractCommitSHA extracts the commit SHA from trigger metadata based on trigger typefunc extractCommitSHA(tr tangled.Pipeline_TriggerMetadata) (string, error) { switch workflow.TriggerKind(tr.Kind) { case workflow.TriggerKindPush: if tr.Push == nil { return "", fmt.Errorf("push trigger metadata is nil") } return tr.Push.NewSha, nil
case workflow.TriggerKindPullRequest: if tr.PullRequest == nil { return "", fmt.Errorf("pull request trigger metadata is nil") } return tr.PullRequest.SourceSha, nil
case workflow.TriggerKindManual: // Manual triggers don't have an explicit SHA in the metadata // For now, return empty string - could be enhanced to fetch from default branch // TODO: Implement manual trigger SHA resolution (fetch default branch HEAD) return "", nil
default: return "", fmt.Errorf("unknown trigger kind: %s", tr.Kind) }}
// BuildRepoURL constructs the repository URL from repo metadata.func BuildRepoURL(repo *tangled.Pipeline_TriggerRepo, devMode bool) string { if repo == nil { return "" }
scheme := "https://" if devMode { scheme = "http://" }
// Get host from knot host := repo.Knot
// In dev mode, replace localhost with host.docker.internal for Docker networking if devMode && strings.Contains(host, "localhost") { host = strings.ReplaceAll(host, "localhost", "host.docker.internal") }
// Build URL: {scheme}{knot}/{did}/{repo} return fmt.Sprintf("%s%s/%s/%s", scheme, host, repo.Did, repo.Repo)}
// buildFetchArgs constructs the arguments for git fetch based on clone optionsfunc buildFetchArgs(clone tangled.Pipeline_CloneOpts, sha string) []string { args := []string{}
// Set fetch depth (default to 1 for shallow clone) depth := clone.Depth if depth == 0 { depth = 1 } args = append(args, fmt.Sprintf("--depth=%d", depth))
// Add submodules if requested if clone.Submodules { args = append(args, "--recurse-submodules=yes") }
// Add remote and SHA args = append(args, "origin") if sha != "" { args = append(args, sha) }
return args}