wip: support formatter ordering
Signed-off-by: Brian McGee <brian@bmcgee.ie>
This commit is contained in:
parent
5711caebb9
commit
335fc49b20
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@ -64,6 +64,20 @@ func (f *Format) Run() error {
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}
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}
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// detect dependency cycles and broken dependencies
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for name, formatter := range cfg.Formatters {
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if formatter.Before != "" {
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// check child formatter exists
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_, ok := cfg.Formatters[formatter.Before]
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if !ok {
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return fmt.Errorf(
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"formatter %v is before %v but config for %v was not found",
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name, formatter.Before, formatter.Before,
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)
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}
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}
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}
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// init formatters
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for name, formatter := range cfg.Formatters {
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if !includeFormatter(name) {
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@ -83,14 +97,25 @@ func (f *Format) Run() error {
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}
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}
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ctx = format.RegisterFormatters(ctx, cfg.Formatters)
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// iterate the initialised formatters configuring parent/child relationships
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for _, formatter := range cfg.Formatters {
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if formatter.Before != "" {
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child, ok := cfg.Formatters[formatter.Before]
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if !ok {
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// formatter has been filtered out by the user
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formatter.Before = ""
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continue
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}
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formatter.SetChild(child)
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child.SetParent(formatter)
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}
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}
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if err = cache.Open(Cli.TreeRoot, Cli.ClearCache, cfg.Formatters); err != nil {
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return err
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}
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//
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pendingCh := make(chan string, 1024)
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completedCh := make(chan string, 1024)
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ctx = format.SetCompletedChannel(ctx, completedCh)
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@ -114,20 +139,13 @@ func (f *Format) Run() error {
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batchSize := 1024
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batch := make([]string, 0, batchSize)
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var pending, completed, changes int
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var changes int
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LOOP:
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for {
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select {
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case <-ctx.Done():
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return ctx.Err()
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case _, ok := <-pendingCh:
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if ok {
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pending += 1
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} else if pending == completed {
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break LOOP
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}
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case path, ok := <-completedCh:
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if !ok {
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break LOOP
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@ -141,12 +159,6 @@ func (f *Format) Run() error {
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changes += count
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batch = batch[:0]
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}
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completed += 1
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if completed == pending {
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close(completedCh)
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}
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}
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}
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@ -166,26 +178,32 @@ func (f *Format) Run() error {
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})
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eg.Go(func() error {
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count := 0
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// pass paths to each formatter
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for path := range pathsCh {
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for _, formatter := range cfg.Formatters {
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if formatter.Wants(path) {
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pendingCh <- path
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count += 1
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formatter.Put(path)
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}
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}
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}
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// indicate no more paths for each formatter
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for _, formatter := range cfg.Formatters {
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if formatter.Parent() != nil {
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// this formatter is not a root, it will be closed by a parent
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continue
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}
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formatter.Close()
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}
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if count == 0 {
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close(completedCh)
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// await completion
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for _, formatter := range cfg.Formatters {
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formatter.AwaitCompletion()
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}
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// indicate no more completion events
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close(completedCh)
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return nil
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})
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@ -404,3 +404,57 @@ func TestGitWorktree(t *testing.T) {
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as.NoError(err)
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as.Contains(string(out), fmt.Sprintf("%d files changed", 55))
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}
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func TestOrderingFormatters(t *testing.T) {
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as := require.New(t)
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tempDir := test.TempExamples(t)
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configPath := path.Join(tempDir, "treefmt.toml")
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// missing child
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test.WriteConfig(t, configPath, format.Config{
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Formatters: map[string]*format.Formatter{
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"hs-a": {
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Command: "echo",
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Includes: []string{"*.hs"},
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Before: "hs-b",
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},
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},
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})
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out, err := cmd(t, "--config-file", configPath, "--tree-root", tempDir)
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as.ErrorContains(err, "formatter hs-a is before hs-b but config for hs-b was not found")
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// multiple roots
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test.WriteConfig(t, configPath, format.Config{
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Formatters: map[string]*format.Formatter{
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"hs-a": {
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Command: "echo",
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Includes: []string{"*.hs"},
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Before: "hs-b",
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},
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"hs-b": {
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Command: "echo",
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Includes: []string{"*.hs"},
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Before: "hs-c",
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},
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"hs-c": {
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Command: "echo",
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Includes: []string{"*.hs"},
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},
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"py-a": {
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Command: "echo",
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Includes: []string{"*.py"},
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Before: "py-b",
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},
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"py-b": {
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Command: "echo",
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Includes: []string{"*.py"},
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},
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},
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})
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out, err = cmd(t, "--config-file", configPath, "--tree-root", tempDir)
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as.NoError(err)
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as.Contains(string(out), "8 files changed")
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}
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@ -5,28 +5,17 @@ import (
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)
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const (
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formattersKey = "formatters"
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completedChKey = "completedCh"
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)
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// RegisterFormatters is used to set a map of formatters in the provided context.
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func RegisterFormatters(ctx context.Context, formatters map[string]*Formatter) context.Context {
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return context.WithValue(ctx, formattersKey, formatters)
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}
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// GetFormatters is used to retrieve a formatters map from the provided context.
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func GetFormatters(ctx context.Context) map[string]*Formatter {
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return ctx.Value(formattersKey).(map[string]*Formatter)
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}
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// SetCompletedChannel is used to set a channel for indication processing completion in the provided context.
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func SetCompletedChannel(ctx context.Context, completedCh chan string) context.Context {
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return context.WithValue(ctx, completedChKey, completedCh)
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}
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// MarkFormatComplete is used to indicate that all processing has finished for the provided path.
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// MarkPathComplete is used to indicate that all processing has finished for the provided path.
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// This is done by adding the path to the completion channel which should have already been set using
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// SetCompletedChannel.
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func MarkFormatComplete(ctx context.Context, path string) {
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func MarkPathComplete(ctx context.Context, path string) {
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ctx.Value(completedChKey).(chan string) <- path
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}
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@ -24,19 +24,26 @@ type Formatter struct {
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Includes []string
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// Excludes is an optional list of glob patterns used to exclude certain files from this Formatter.
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Excludes []string
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// Before is the name of another formatter which must process a path after this one
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Before string
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name string
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log *log.Logger
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executable string // path to the executable described by Command
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parent *Formatter
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child *Formatter
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// internal compiled versions of Includes and Excludes.
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includes []glob.Glob
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excludes []glob.Glob
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// inbox is used to accept new paths for formatting.
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inbox chan string
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// inboxCh is used to accept new paths for formatting.
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inboxCh chan string
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// completedCh is used to wait for this formatter to finish all processing.
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completedCh chan interface{}
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// Entries from inbox are batched according to batchSize and stored in batch for processing when the batchSize has
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// Entries from inboxCh are batched according to batchSize and stored in batch for processing when the batchSize has
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// been reached or Close is invoked.
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batch []string
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batchSize int
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@ -66,9 +73,9 @@ func (f *Formatter) Init(name string, globalExcludes []glob.Glob) error {
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// initialise internal state
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f.log = log.WithPrefix("format | " + name)
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f.batchSize = 1024
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f.inbox = make(chan string, f.batchSize)
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f.batch = make([]string, f.batchSize)
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f.batch = f.batch[:0]
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f.batch = make([]string, 0, f.batchSize)
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f.inboxCh = make(chan string, f.batchSize)
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f.completedCh = make(chan interface{}, 1)
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f.includes, err = CompileGlobs(f.Includes)
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if err != nil {
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@ -84,6 +91,18 @@ func (f *Formatter) Init(name string, globalExcludes []glob.Glob) error {
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return nil
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}
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func (f *Formatter) SetParent(formatter *Formatter) {
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f.parent = formatter
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}
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func (f *Formatter) Parent() *Formatter {
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return f.parent
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}
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func (f *Formatter) SetChild(formatter *Formatter) {
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f.child = formatter
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}
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// Wants is used to test if a Formatter wants path based on it's configured Includes and Excludes patterns.
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// Returns true if the Formatter should be applied to path, false otherwise.
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func (f *Formatter) Wants(path string) bool {
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@ -94,16 +113,26 @@ func (f *Formatter) Wants(path string) bool {
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return match
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}
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// Put add path into this Formatter's inbox for processing.
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// Put add path into this Formatter's inboxCh for processing.
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func (f *Formatter) Put(path string) {
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f.inbox <- path
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f.inboxCh <- path
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}
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// Run is the main processing loop for this Formatter.
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// It accepts a context which is used to lookup certain dependencies and for cancellation.
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func (f *Formatter) Run(ctx context.Context) (err error) {
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defer func() {
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if f.child != nil {
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// indicate no further processing for the child formatter
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f.child.Close()
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}
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// indicate this formatter has finished processing
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f.completedCh <- nil
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}()
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LOOP:
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// keep processing until ctx has been cancelled or inbox has been closed
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// keep processing until ctx has been cancelled or inboxCh has been closed
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for {
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select {
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@ -112,8 +141,8 @@ LOOP:
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err = ctx.Err()
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break LOOP
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case path, ok := <-f.inbox:
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// check if the inbox has been closed
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case path, ok := <-f.inboxCh:
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// check if the inboxCh has been closed
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if !ok {
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break LOOP
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}
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@ -167,9 +196,16 @@ func (f *Formatter) apply(ctx context.Context) error {
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f.log.Infof("%v files processed in %v", len(f.batch), time.Now().Sub(start))
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// mark each path in this batch as completed
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for _, path := range f.batch {
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MarkFormatComplete(ctx, path)
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if f.child == nil {
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// mark each path in this batch as completed
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for _, path := range f.batch {
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MarkPathComplete(ctx, path)
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}
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} else {
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// otherwise forward each path onto the next formatter for processing
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for _, path := range f.batch {
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f.child.Put(path)
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}
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}
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// reset batch
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@ -180,5 +216,10 @@ func (f *Formatter) apply(ctx context.Context) error {
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// Close is used to indicate that a Formatter should process any remaining paths and then stop it's processing loop.
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func (f *Formatter) Close() {
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close(f.inbox)
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close(f.inboxCh)
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}
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func (f *Formatter) AwaitCompletion() {
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// todo support a timeout
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<-f.completedCh
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}
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