367 lines
8.3 KiB
Go
367 lines
8.3 KiB
Go
package git
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import (
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"context"
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"io/ioutil"
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"os"
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"os/exec"
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"path/filepath"
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"strings"
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"testing"
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"github.com/containerd/containerd/namespaces"
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"github.com/containerd/containerd/snapshots/naive"
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"github.com/moby/buildkit/cache"
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"github.com/moby/buildkit/cache/metadata"
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"github.com/moby/buildkit/snapshot"
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"github.com/moby/buildkit/source"
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"github.com/pkg/errors"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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)
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func TestRepeatedFetch(t *testing.T) {
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testRepeatedFetch(t, false)
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}
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func TestRepeatedFetchKeepGitDir(t *testing.T) {
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testRepeatedFetch(t, true)
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}
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func testRepeatedFetch(t *testing.T, keepGitDir bool) {
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t.Parallel()
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ctx := context.TODO()
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tmpdir, err := ioutil.TempDir("", "buildkit-state")
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require.NoError(t, err)
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defer os.RemoveAll(tmpdir)
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gs := setupGitSource(t, tmpdir)
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repodir, err := ioutil.TempDir("", "buildkit-gitsource")
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require.NoError(t, err)
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defer os.RemoveAll(repodir)
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repodir, err = setupGitRepo(repodir)
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require.NoError(t, err)
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id := &source.GitIdentifier{Remote: repodir, KeepGitDir: keepGitDir}
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g, err := gs.Resolve(ctx, id)
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require.NoError(t, err)
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key1, err := g.CacheKey(ctx)
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require.NoError(t, err)
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require.Equal(t, 40, len(key1))
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ref1, err := g.Snapshot(ctx)
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require.NoError(t, err)
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defer ref1.Release(context.TODO())
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mount, err := ref1.Mount(ctx, false)
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require.NoError(t, err)
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lm := snapshot.LocalMounter(mount)
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dir, err := lm.Mount()
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require.NoError(t, err)
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defer lm.Unmount()
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dt, err := ioutil.ReadFile(filepath.Join(dir, "def"))
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require.NoError(t, err)
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require.Equal(t, "bar\n", string(dt))
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_, err = os.Lstat(filepath.Join(dir, "ghi"))
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require.Error(t, err)
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require.True(t, os.IsNotExist(err))
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_, err = os.Lstat(filepath.Join(dir, "sub/subfile"))
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require.Error(t, err)
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require.True(t, os.IsNotExist(err))
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// second fetch returns same dir
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id = &source.GitIdentifier{Remote: repodir, Ref: "master", KeepGitDir: keepGitDir}
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g, err = gs.Resolve(ctx, id)
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require.NoError(t, err)
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key2, err := g.CacheKey(ctx)
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require.NoError(t, err)
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require.Equal(t, key1, key2)
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ref2, err := g.Snapshot(ctx)
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require.NoError(t, err)
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defer ref2.Release(context.TODO())
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require.Equal(t, ref1.ID(), ref2.ID())
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id = &source.GitIdentifier{Remote: repodir, Ref: "feature", KeepGitDir: keepGitDir}
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g, err = gs.Resolve(ctx, id)
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require.NoError(t, err)
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key3, err := g.CacheKey(ctx)
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require.NoError(t, err)
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require.NotEqual(t, key1, key3)
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ref3, err := g.Snapshot(ctx)
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require.NoError(t, err)
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defer ref3.Release(context.TODO())
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mount, err = ref3.Mount(ctx, false)
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require.NoError(t, err)
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lm = snapshot.LocalMounter(mount)
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dir, err = lm.Mount()
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require.NoError(t, err)
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defer lm.Unmount()
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dt, err = ioutil.ReadFile(filepath.Join(dir, "ghi"))
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require.NoError(t, err)
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require.Equal(t, "baz\n", string(dt))
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dt, err = ioutil.ReadFile(filepath.Join(dir, "sub/subfile"))
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require.NoError(t, err)
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require.Equal(t, "subcontents\n", string(dt))
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}
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func TestFetchBySHA(t *testing.T) {
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testFetchBySHA(t, false)
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}
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func TestFetchBySHAKeepGitDir(t *testing.T) {
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testFetchBySHA(t, true)
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}
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func testFetchBySHA(t *testing.T, keepGitDir bool) {
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t.Parallel()
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ctx := namespaces.WithNamespace(context.Background(), "buildkit-test")
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tmpdir, err := ioutil.TempDir("", "buildkit-state")
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require.NoError(t, err)
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defer os.RemoveAll(tmpdir)
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gs := setupGitSource(t, tmpdir)
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repodir, err := ioutil.TempDir("", "buildkit-gitsource")
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require.NoError(t, err)
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defer os.RemoveAll(repodir)
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repodir, err = setupGitRepo(repodir)
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require.NoError(t, err)
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cmd := exec.Command("git", "rev-parse", "feature")
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cmd.Dir = repodir
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out, err := cmd.Output()
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require.NoError(t, err)
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sha := strings.TrimSpace(string(out))
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require.Equal(t, 40, len(sha))
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id := &source.GitIdentifier{Remote: repodir, Ref: sha, KeepGitDir: keepGitDir}
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g, err := gs.Resolve(ctx, id)
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require.NoError(t, err)
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key1, err := g.CacheKey(ctx)
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require.NoError(t, err)
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require.Equal(t, 40, len(key1))
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ref1, err := g.Snapshot(ctx)
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require.NoError(t, err)
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defer ref1.Release(context.TODO())
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mount, err := ref1.Mount(ctx, false)
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require.NoError(t, err)
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lm := snapshot.LocalMounter(mount)
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dir, err := lm.Mount()
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require.NoError(t, err)
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defer lm.Unmount()
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dt, err := ioutil.ReadFile(filepath.Join(dir, "ghi"))
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require.NoError(t, err)
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require.Equal(t, "baz\n", string(dt))
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dt, err = ioutil.ReadFile(filepath.Join(dir, "sub/subfile"))
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require.NoError(t, err)
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require.Equal(t, "subcontents\n", string(dt))
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}
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func TestMultipleRepos(t *testing.T) {
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testMultipleRepos(t, false)
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}
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func TestMultipleReposKeepGitDir(t *testing.T) {
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testMultipleRepos(t, true)
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}
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func testMultipleRepos(t *testing.T, keepGitDir bool) {
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t.Parallel()
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ctx := namespaces.WithNamespace(context.Background(), "buildkit-test")
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tmpdir, err := ioutil.TempDir("", "buildkit-state")
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require.NoError(t, err)
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defer os.RemoveAll(tmpdir)
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gs := setupGitSource(t, tmpdir)
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repodir, err := ioutil.TempDir("", "buildkit-gitsource")
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require.NoError(t, err)
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defer os.RemoveAll(repodir)
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repodir, err = setupGitRepo(repodir)
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require.NoError(t, err)
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repodir2, err := ioutil.TempDir("", "buildkit-gitsource")
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require.NoError(t, err)
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defer os.RemoveAll(repodir2)
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err = runShell(repodir2,
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"git init",
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"git config --local user.email test",
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"git config --local user.name test",
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"echo xyz > xyz",
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"git add xyz",
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"git commit -m initial",
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)
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require.NoError(t, err)
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id := &source.GitIdentifier{Remote: repodir, KeepGitDir: keepGitDir}
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id2 := &source.GitIdentifier{Remote: repodir2, KeepGitDir: keepGitDir}
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g, err := gs.Resolve(ctx, id)
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require.NoError(t, err)
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g2, err := gs.Resolve(ctx, id2)
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require.NoError(t, err)
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key1, err := g.CacheKey(ctx)
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require.NoError(t, err)
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require.Equal(t, 40, len(key1))
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key2, err := g2.CacheKey(ctx)
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require.NoError(t, err)
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require.Equal(t, 40, len(key2))
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require.NotEqual(t, key1, key2)
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ref1, err := g.Snapshot(ctx)
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require.NoError(t, err)
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defer ref1.Release(context.TODO())
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mount, err := ref1.Mount(ctx, false)
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require.NoError(t, err)
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lm := snapshot.LocalMounter(mount)
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dir, err := lm.Mount()
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require.NoError(t, err)
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defer lm.Unmount()
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ref2, err := g2.Snapshot(ctx)
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require.NoError(t, err)
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defer ref2.Release(context.TODO())
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mount, err = ref2.Mount(ctx, false)
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require.NoError(t, err)
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lm = snapshot.LocalMounter(mount)
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dir2, err := lm.Mount()
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require.NoError(t, err)
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defer lm.Unmount()
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dt, err := ioutil.ReadFile(filepath.Join(dir, "def"))
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require.NoError(t, err)
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require.Equal(t, "bar\n", string(dt))
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dt, err = ioutil.ReadFile(filepath.Join(dir2, "xyz"))
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require.NoError(t, err)
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require.Equal(t, "xyz\n", string(dt))
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}
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func setupGitSource(t *testing.T, tmpdir string) source.Source {
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snapshotter, err := naive.NewSnapshotter(filepath.Join(tmpdir, "snapshots"))
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assert.NoError(t, err)
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md, err := metadata.NewStore(filepath.Join(tmpdir, "metadata.db"))
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assert.NoError(t, err)
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cm, err := cache.NewManager(cache.ManagerOpt{
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Snapshotter: snapshotter,
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MetadataStore: md,
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})
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assert.NoError(t, err)
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gs, err := NewSource(Opt{
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CacheAccessor: cm,
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MetadataStore: md,
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})
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require.NoError(t, err)
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return gs
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}
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func setupGitRepo(dir string) (string, error) {
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subPath := filepath.Join(dir, "sub")
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mainPath := filepath.Join(dir, "main")
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if err := os.MkdirAll(subPath, 0700); err != nil {
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return "", err
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}
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if err := os.MkdirAll(mainPath, 0700); err != nil {
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return "", err
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}
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if err := runShell(filepath.Join(dir, "sub"),
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"git init",
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"git config --local user.email test",
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"git config --local user.name test",
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"echo subcontents > subfile",
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"git add subfile",
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"git commit -m initial",
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); err != nil {
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return "", err
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}
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if err := runShell(filepath.Join(dir, "main"),
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"git init",
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"git config --local user.email test",
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"git config --local user.name test",
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"echo foo > abc",
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"git add abc",
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"git commit -m initial",
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"echo bar > def",
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"git add def",
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"git commit -m second",
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"git checkout -B feature",
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"echo baz > ghi",
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"git add ghi",
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"git commit -m feature",
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"git submodule add "+subPath+" sub",
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"git add -A",
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"git commit -m withsub",
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); err != nil {
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return "", err
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}
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return mainPath, nil
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}
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func runShell(dir string, cmds ...string) error {
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for _, args := range cmds {
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cmd := exec.Command("sh", "-c", args)
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cmd.Dir = dir
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if err := cmd.Run(); err != nil {
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return errors.Wrapf(err, "error running %v", args)
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}
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}
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return nil
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}
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