forked from TrueCloudLab/restic
581c62ee72
This commit changes how the worker goroutines for saving e.g. blobs interact. Before, it was possible to get stuck sending an instruction to archive a file or dir when no worker goroutines were available any more. This commit introduces a `done` channel for each of the worker pools, which is set to the channel returned by `tomb.Dying()`, so it is closed when the first worker returned an error.
115 lines
2.1 KiB
Go
115 lines
2.1 KiB
Go
package archiver
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import (
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"context"
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"fmt"
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"runtime"
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"sync/atomic"
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"testing"
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"github.com/restic/restic/internal/errors"
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"github.com/restic/restic/internal/repository"
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"github.com/restic/restic/internal/restic"
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tomb "gopkg.in/tomb.v2"
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)
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var errTest = errors.New("test error")
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type saveFail struct {
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idx restic.Index
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cnt int32
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failAt int32
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}
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func (b *saveFail) SaveBlob(ctx context.Context, t restic.BlobType, buf []byte, id restic.ID) (restic.ID, error) {
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val := atomic.AddInt32(&b.cnt, 1)
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if val == b.failAt {
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return restic.ID{}, errTest
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}
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return id, nil
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}
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func (b *saveFail) Index() restic.Index {
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return b.idx
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}
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func TestBlobSaver(t *testing.T) {
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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var tmb tomb.Tomb
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saver := &saveFail{
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idx: repository.NewIndex(),
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}
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b := NewBlobSaver(ctx, &tmb, saver, uint(runtime.NumCPU()))
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var results []FutureBlob
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for i := 0; i < 20; i++ {
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buf := &Buffer{Data: []byte(fmt.Sprintf("foo%d", i))}
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fb := b.Save(ctx, restic.DataBlob, buf)
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results = append(results, fb)
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}
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for i, blob := range results {
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blob.Wait(ctx)
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if blob.Known() {
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t.Errorf("blob %v is known, that should not be the case", i)
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}
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}
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tmb.Kill(nil)
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err := tmb.Wait()
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if err != nil {
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t.Fatal(err)
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}
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}
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func TestBlobSaverError(t *testing.T) {
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var tests = []struct {
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blobs int
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failAt int
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}{
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{20, 2},
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{20, 5},
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{20, 15},
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{200, 150},
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}
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for _, test := range tests {
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t.Run("", func(t *testing.T) {
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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var tmb tomb.Tomb
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saver := &saveFail{
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idx: repository.NewIndex(),
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failAt: int32(test.failAt),
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}
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b := NewBlobSaver(ctx, &tmb, saver, uint(runtime.NumCPU()))
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var results []FutureBlob
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for i := 0; i < test.blobs; i++ {
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buf := &Buffer{Data: []byte(fmt.Sprintf("foo%d", i))}
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fb := b.Save(ctx, restic.DataBlob, buf)
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results = append(results, fb)
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}
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tmb.Kill(nil)
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err := tmb.Wait()
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if err == nil {
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t.Errorf("expected error not found")
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}
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if err != errTest {
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t.Fatalf("unexpected error found: %v", err)
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}
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})
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}
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}
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