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-rw-r--r--internal/state/data.go52
-rw-r--r--internal/state/data_test.go145
-rw-r--r--internal/state/header.go86
-rw-r--r--internal/state/header_test.go184
-rw-r--r--internal/state/join.go64
-rw-r--r--internal/state/segment.go161
-rw-r--r--internal/state/segment_test.go259
-rw-r--r--internal/state/state.go131
-rw-r--r--internal/state/state_test.go120
-rw-r--r--internal/state/store.go162
-rw-r--r--internal/state/store_test.go254
11 files changed, 0 insertions, 1618 deletions
diff --git a/internal/state/data.go b/internal/state/data.go
deleted file mode 100644
index a680c96b..00000000
--- a/internal/state/data.go
+++ /dev/null
@@ -1,52 +0,0 @@
-package state
-
-import (
- "encoding/gob"
- "fmt"
- "io"
- "os"
-
- "hakurei.app/hst"
-)
-
-// entryEncode encodes [hst.State] into [io.Writer] with the state entry header.
-// entryEncode does not validate the embedded [hst.Config] value.
-//
-// A non-nil error returned by entryEncode is of type [hst.AppError].
-func entryEncode(w io.Writer, s *hst.State) error {
- if err := entryWriteHeader(w, s.Enablements.Unwrap()); err != nil {
- return &hst.AppError{Step: "encode state header", Err: err}
- } else if err = gob.NewEncoder(w).Encode(s); err != nil {
- return &hst.AppError{Step: "encode state body", Err: err}
- } else {
- return nil
- }
-}
-
-// entryDecodeHeader calls entryReadHeader, returning [hst.AppError] for a non-nil error.
-func entryDecodeHeader(r io.Reader) (hst.Enablement, error) {
- if et, err := entryReadHeader(r); err != nil {
- return 0, &hst.AppError{Step: "decode state header", Err: err}
- } else {
- return et, nil
- }
-}
-
-// entryDecode decodes [hst.State] from [io.Reader] and stores the result in the value pointed to by p.
-// entryDecode validates the embedded [hst.Config] value.
-//
-// A non-nil error returned by entryDecode is of type [hst.AppError].
-func entryDecode(r io.Reader, p *hst.State) (hst.Enablement, error) {
- if et, err := entryDecodeHeader(r); err != nil {
- return et, err
- } else if err = gob.NewDecoder(r).Decode(&p); err != nil {
- return et, &hst.AppError{Step: "decode state body", Err: err}
- } else if err = p.Config.Validate(); err != nil {
- return et, err
- } else if p.Enablements.Unwrap() != et {
- return et, &hst.AppError{Step: "validate state enablement", Err: os.ErrInvalid,
- Msg: fmt.Sprintf("state entry %s has unexpected enablement byte %#x, %#x", p.ID.String(), byte(p.Enablements.Unwrap()), byte(et))}
- } else {
- return et, nil
- }
-}
diff --git a/internal/state/data_test.go b/internal/state/data_test.go
deleted file mode 100644
index 6ad91e53..00000000
--- a/internal/state/data_test.go
+++ /dev/null
@@ -1,145 +0,0 @@
-package state
-
-import (
- "bytes"
- "encoding/gob"
- "errors"
- "io"
- "os"
- "reflect"
- "strings"
- "testing"
- "time"
-
- "hakurei.app/container/stub"
- "hakurei.app/hst"
-)
-
-func TestEntryData(t *testing.T) {
- t.Parallel()
-
- mustEncodeGob := func(e any) string {
- var buf bytes.Buffer
- if err := gob.NewEncoder(&buf).Encode(e); err != nil {
- t.Fatalf("cannot encode invalid state: %v", err)
- return "\x00" // not reached
- } else {
- return buf.String()
- }
- }
- templateStateGob := mustEncodeGob(newTemplateState())
-
- testCases := []struct {
- name string
- data string
- s *hst.State
- err error
- }{
- {"invalid header", "\x00\xff\xca\xfe\xff\xff\xff\x00", nil, &hst.AppError{
- Step: "decode state header", Err: errors.New("unexpected revision ffff")}},
-
- {"invalid gob", "\x00\xff\xca\xfe\x00\x00\xff\x00", nil, &hst.AppError{
- Step: "decode state body", Err: io.EOF}},
-
- {"invalid config", "\x00\xff\xca\xfe\x00\x00\xff\x00" + mustEncodeGob(new(hst.State)), new(hst.State), &hst.AppError{
- Step: "validate configuration", Err: hst.ErrConfigNull,
- Msg: "invalid configuration"}},
-
- {"inconsistent enablement", "\x00\xff\xca\xfe\x00\x00\xff\x00" + templateStateGob, newTemplateState(), &hst.AppError{
- Step: "validate state enablement", Err: os.ErrInvalid,
- Msg: "state entry aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa has unexpected enablement byte 0xd, 0xff"}},
-
- {"template", "\x00\xff\xca\xfe\x00\x00\x0d\xf2" + templateStateGob, newTemplateState(), nil},
- }
- for _, tc := range testCases {
- t.Run(tc.name, func(t *testing.T) {
- t.Parallel()
-
- t.Run("encode", func(t *testing.T) {
- if tc.s == nil || tc.s.Config == nil {
- return
- }
- t.Parallel()
-
- var buf bytes.Buffer
- if err := entryEncode(&buf, tc.s); err != nil {
- t.Fatalf("entryEncode: error = %v", err)
- }
-
- if tc.err == nil {
- // Gob encoding is not guaranteed to be deterministic.
- // While the current implementation mostly is, it has randomised order
- // for iterating over maps, and hst.Config holds a map for environ.
- var got hst.State
- if et, err := entryDecode(&buf, &got); err != nil {
- t.Fatalf("entryDecode: error = %v", err)
- } else if stateEt := got.Enablements.Unwrap(); et != stateEt {
- t.Fatalf("entryDecode: et = %x, state %x", et, stateEt)
- }
- if !reflect.DeepEqual(&got, tc.s) {
- t.Errorf("entryEncode: %x", buf.Bytes())
- }
- } else if testing.Verbose() {
- t.Logf("%x", buf.String())
- }
- })
-
- t.Run("decode", func(t *testing.T) {
- t.Parallel()
-
- var got hst.State
- if et, err := entryDecode(strings.NewReader(tc.data), &got); !reflect.DeepEqual(err, tc.err) {
- t.Fatalf("entryDecode: error = %#v, want %#v", err, tc.err)
- } else if err != nil {
- return
- } else if stateEt := got.Enablements.Unwrap(); et != stateEt {
- t.Fatalf("entryDecode: et = %x, state %x", et, stateEt)
- }
-
- if !reflect.DeepEqual(&got, tc.s) {
- t.Errorf("entryDecode: %#v, want %#v", &got, tc.s)
- }
- })
- })
- }
-
- t.Run("encode fault", func(t *testing.T) {
- t.Parallel()
- s := newTemplateState()
-
- t.Run("gob", func(t *testing.T) {
- var want = &hst.AppError{Step: "encode state body", Err: stub.UniqueError(0xcafe)}
- if err := entryEncode(stubNErrorWriter(entryHeaderSize), s); !reflect.DeepEqual(err, want) {
- t.Errorf("entryEncode: error = %#v, want %#v", err, want)
- }
- })
-
- t.Run("header", func(t *testing.T) {
- var want = &hst.AppError{Step: "encode state header", Err: stub.UniqueError(0xcafe)}
- if err := entryEncode(stubNErrorWriter(entryHeaderSize-1), s); !reflect.DeepEqual(err, want) {
- t.Errorf("entryEncode: error = %#v, want %#v", err, want)
- }
- })
- })
-}
-
-// newTemplateState returns the address of a new template [hst.State] struct.
-func newTemplateState() *hst.State {
- return &hst.State{
- ID: hst.ID(bytes.Repeat([]byte{0xaa}, len(hst.ID{}))),
- PID: 0xcafebabe,
- ShimPID: 0xdeadbeef,
- Config: hst.Template(),
- Time: time.Unix(0, 0),
- }
-}
-
-// stubNErrorWriter returns an error for writes above a certain size.
-type stubNErrorWriter int
-
-func (w stubNErrorWriter) Write(p []byte) (n int, err error) {
- if len(p) > int(w) {
- return int(w), stub.UniqueError(0xcafe)
- }
- return io.Discard.Write(p)
-}
diff --git a/internal/state/header.go b/internal/state/header.go
deleted file mode 100644
index 25b1e6af..00000000
--- a/internal/state/header.go
+++ /dev/null
@@ -1,86 +0,0 @@
-package state
-
-import (
- "encoding/hex"
- "errors"
- "io"
- "os"
- "strconv"
- "syscall"
-
- "hakurei.app/hst"
-)
-
-const (
- // entryHeaderMagic are magic bytes at the beginning of the state entry file.
- entryHeaderMagic = "\x00\xff\xca\xfe"
- // entryHeaderRevision follows entryHeaderMagic and is incremented for revisions of the format.
- entryHeaderRevision = "\x00\x00"
- // entryHeaderSize is the fixed size of the header in bytes, including the enablement byte and its complement.
- entryHeaderSize = len(entryHeaderMagic+entryHeaderRevision) + 2
-)
-
-// entryHeaderEncode encodes a state entry header for a [hst.Enablement] byte.
-func entryHeaderEncode(et hst.Enablement) *[entryHeaderSize]byte {
- data := [entryHeaderSize]byte([]byte(
- entryHeaderMagic + entryHeaderRevision + string([]hst.Enablement{et, ^et}),
- ))
- return &data
-}
-
-// entryHeaderDecode validates a state entry header and returns the [hst.Enablement] byte.
-func entryHeaderDecode(data *[entryHeaderSize]byte) (hst.Enablement, error) {
- if magic := data[:len(entryHeaderMagic)]; string(magic) != entryHeaderMagic {
- return 0, errors.New("invalid header " + hex.EncodeToString(magic))
- }
- if revision := data[len(entryHeaderMagic):len(entryHeaderMagic+entryHeaderRevision)]; string(revision) != entryHeaderRevision {
- return 0, errors.New("unexpected revision " + hex.EncodeToString(revision))
- }
-
- et := data[len(entryHeaderMagic+entryHeaderRevision)]
- if et != ^data[len(entryHeaderMagic+entryHeaderRevision)+1] {
- return 0, errors.New("header enablement value is inconsistent")
- }
- return hst.Enablement(et), nil
-}
-
-// EntrySizeError is returned for a file too small to hold a state entry header.
-type EntrySizeError struct {
- Name string
- Size int64
-}
-
-func (e *EntrySizeError) Error() string {
- if e.Name == "" {
- return "state entry file is too short"
- }
- return "state entry file " + strconv.Quote(e.Name) + " is too short"
-}
-
-// entryCheckFile checks whether [os.FileInfo] refers to a file that might hold [hst.State].
-func entryCheckFile(fi os.FileInfo) error {
- if fi.IsDir() {
- return syscall.EISDIR
- }
- if s := fi.Size(); s <= int64(entryHeaderSize) {
- return &EntrySizeError{Name: fi.Name(), Size: s}
- }
- return nil
-}
-
-// entryReadHeader reads [hst.Enablement] from an [io.Reader].
-func entryReadHeader(r io.Reader) (hst.Enablement, error) {
- var data [entryHeaderSize]byte
- if n, err := r.Read(data[:]); err != nil {
- return 0, err
- } else if n != entryHeaderSize {
- return 0, &EntrySizeError{Size: int64(n)}
- }
- return entryHeaderDecode(&data)
-}
-
-// entryWriteHeader writes [hst.Enablement] header to an [io.Writer].
-func entryWriteHeader(w io.Writer, et hst.Enablement) error {
- _, err := w.Write(entryHeaderEncode(et)[:])
- return err
-}
diff --git a/internal/state/header_test.go b/internal/state/header_test.go
deleted file mode 100644
index 18a620c2..00000000
--- a/internal/state/header_test.go
+++ /dev/null
@@ -1,184 +0,0 @@
-package state
-
-import (
- "bytes"
- "errors"
- "io"
- "io/fs"
- "os"
- "reflect"
- "syscall"
- "testing"
- "time"
-
- "hakurei.app/hst"
-)
-
-func TestEntryHeader(t *testing.T) {
- t.Parallel()
-
- testCases := []struct {
- name string
- data [entryHeaderSize]byte
- et hst.Enablement
- err error
- }{
- {"complement mismatch", [entryHeaderSize]byte{0x00, 0xff, 0xca, 0xfe, 0x00, 0x00,
- 0x0a, 0xf6}, 0,
- errors.New("header enablement value is inconsistent")},
- {"unexpected revision", [entryHeaderSize]byte{0x00, 0xff, 0xca, 0xfe, 0xff, 0xff}, 0,
- errors.New("unexpected revision ffff")},
- {"invalid header", [entryHeaderSize]byte{0x00, 0xfe, 0xca, 0xfe}, 0,
- errors.New("invalid header 00fecafe")},
-
- {"success high", [entryHeaderSize]byte{0x00, 0xff, 0xca, 0xfe, 0x00, 0x00,
- 0xff, 0x00}, 0xff, nil},
- {"success", [entryHeaderSize]byte{0x00, 0xff, 0xca, 0xfe, 0x00, 0x00,
- 0x09, 0xf6}, hst.EWayland | hst.EPulse, nil},
- }
- for _, tc := range testCases {
- t.Run(tc.name, func(t *testing.T) {
- t.Parallel()
-
- t.Run("encode", func(t *testing.T) {
- if tc.err != nil {
- return
- }
- t.Parallel()
-
- if got := entryHeaderEncode(tc.et); *got != tc.data {
- t.Errorf("entryHeaderEncode: %x, want %x", *got, tc.data)
- }
-
- t.Run("write", func(t *testing.T) {
- var buf bytes.Buffer
- if err := entryWriteHeader(&buf, tc.et); err != nil {
- t.Fatalf("entryWriteHeader: error = %v", err)
- }
- if got := ([entryHeaderSize]byte)(buf.Bytes()); got != tc.data {
- t.Errorf("entryWriteHeader: %x, want %x", got, tc.data)
- }
- })
- })
-
- t.Run("decode", func(t *testing.T) {
- t.Parallel()
-
- got, err := entryHeaderDecode(&tc.data)
- if !reflect.DeepEqual(err, tc.err) {
- t.Fatalf("entryHeaderDecode: error = %#v, want %#v", err, tc.err)
- }
- if err != nil {
- return
- }
- if got != tc.et {
- t.Errorf("entryHeaderDecode: et = %q, want %q", got, tc.et)
- }
-
- if got, err = entryReadHeader(bytes.NewReader(tc.data[:])); err != nil {
- t.Fatalf("entryReadHeader: error = %#v", err)
- } else if got != tc.et {
- t.Errorf("entryReadHeader: et = %q, want %q", got, tc.et)
- }
- })
- })
- }
-}
-
-func TestEntrySizeError(t *testing.T) {
- t.Parallel()
-
- testCases := []struct {
- name string
- err error
- want string
- }{
- {"size only", &EntrySizeError{Size: 0xdeadbeef},
- `state entry file is too short`},
- {"full", &EntrySizeError{Name: "nonexistent", Size: 0xdeadbeef},
- `state entry file "nonexistent" is too short`},
- }
- for _, tc := range testCases {
- t.Run(tc.name, func(t *testing.T) {
- t.Parallel()
-
- if got := tc.err.Error(); got != tc.want {
- t.Errorf("Error: %s, want %s", got, tc.want)
- }
- })
- }
-}
-
-func TestEntryCheckFile(t *testing.T) {
- t.Parallel()
-
- testCases := []struct {
- name string
- fi os.FileInfo
- err error
- }{
- {"dir", &stubFi{name: "dir", isDir: true},
- syscall.EISDIR},
- {"short", stubFi{name: "short", size: 8},
- &EntrySizeError{Name: "short", Size: 8}},
- {"success", stubFi{size: 9}, nil},
- }
- for _, tc := range testCases {
- t.Run(tc.name, func(t *testing.T) {
- t.Parallel()
-
- if err := entryCheckFile(tc.fi); !reflect.DeepEqual(err, tc.err) {
- t.Errorf("entryCheckFile: error = %#v, want %#v", err, tc.err)
- }
- })
- }
-}
-
-func TestEntryReadHeader(t *testing.T) {
- t.Parallel()
-
- testCases := []struct {
- name string
- newR func() io.Reader
- err error
- }{
- {"eof", func() io.Reader { return bytes.NewReader([]byte{}) }, io.EOF},
- {"short", func() io.Reader { return bytes.NewReader([]byte{0}) }, &EntrySizeError{Size: 1}},
- }
- for _, tc := range testCases {
- t.Run(tc.name, func(t *testing.T) {
- t.Parallel()
-
- if _, err := entryReadHeader(tc.newR()); !reflect.DeepEqual(err, tc.err) {
- t.Errorf("entryReadHeader: error = %#v, want %#v", err, tc.err)
- }
- })
- }
-}
-
-// stubFi partially implements [os.FileInfo] using hardcoded values.
-type stubFi struct {
- name string
- size int64
- isDir bool
-}
-
-func (fi stubFi) Name() string {
- if fi.name == "" {
- panic("unreachable")
- }
- return fi.name
-}
-
-func (fi stubFi) Size() int64 {
- if fi.size < 0 {
- panic("unreachable")
- }
- return fi.size
-}
-
-func (fi stubFi) IsDir() bool { return fi.isDir }
-
-func (fi stubFi) Mode() fs.FileMode { panic("unreachable") }
-func (fi stubFi) ModTime() time.Time { panic("unreachable") }
-func (fi stubFi) Sys() any { panic("unreachable") }
diff --git a/internal/state/join.go b/internal/state/join.go
deleted file mode 100644
index 43a19b1d..00000000
--- a/internal/state/join.go
+++ /dev/null
@@ -1,64 +0,0 @@
-package state
-
-import (
- "errors"
- "maps"
-
- "hakurei.app/hst"
-)
-
-var (
- ErrDuplicate = errors.New("store contains duplicates")
-)
-
-/*
-Joiner is the interface that wraps the Join method.
-
-The Join function uses Joiner if available.
-*/
-type Joiner interface {
- Join() (map[hst.ID]*hst.State, error)
-}
-
-// Join returns joined state entries of all active identities.
-func Join(s Store) (map[hst.ID]*hst.State, error) {
- if j, ok := s.(Joiner); ok {
- return j.Join()
- }
-
- var (
- aids []int
- entries = make(map[hst.ID]*hst.State)
-
- el int
- res map[hst.ID]*hst.State
- loadErr error
- )
-
- if ln, err := s.List(); err != nil {
- return nil, err
- } else {
- aids = ln
- }
-
- for _, aid := range aids {
- if _, err := s.Do(aid, func(c Cursor) {
- res, loadErr = c.Load()
- }); err != nil {
- return nil, err
- }
-
- if loadErr != nil {
- return nil, loadErr
- }
-
- // save expected length
- el = len(entries) + len(res)
- maps.Copy(entries, res)
- if len(entries) != el {
- return nil, ErrDuplicate
- }
- }
-
- return entries, nil
-}
diff --git a/internal/state/segment.go b/internal/state/segment.go
deleted file mode 100644
index c8ab8c13..00000000
--- a/internal/state/segment.go
+++ /dev/null
@@ -1,161 +0,0 @@
-package state
-
-import (
- "errors"
- "fmt"
- "iter"
- "os"
- "strconv"
- "sync"
-
- "hakurei.app/container/check"
- "hakurei.app/hst"
- "hakurei.app/internal/lockedfile"
-)
-
-// stateEntryHandle is a handle on a state entry retrieved from a storeHandle.
-// Must only be used while its parent storeHandle.fileMu is held.
-type stateEntryHandle struct {
- // Error returned while decoding pathname.
- // A non-nil value disables stateEntryHandle.
- decodeErr error
-
- // Checked path to entry file.
- pathname *check.Absolute
-
- hst.ID
-}
-
-// open opens the underlying state entry file, returning [hst.AppError] for a non-nil error.
-func (eh *stateEntryHandle) open(flag int, perm os.FileMode) (*os.File, error) {
- if eh.decodeErr != nil {
- return nil, eh.decodeErr
- }
-
- if f, err := os.OpenFile(eh.pathname.String(), flag, perm); err != nil {
- return nil, &hst.AppError{Step: "open state entry", Err: err}
- } else {
- return f, nil
- }
-}
-
-// destroy removes the underlying state entry file, returning [hst.AppError] for a non-nil error.
-func (eh *stateEntryHandle) destroy() error {
- // destroy does not go through open
- if eh.decodeErr != nil {
- return eh.decodeErr
- }
-
- if err := os.Remove(eh.pathname.String()); err != nil {
- return &hst.AppError{Step: "destroy state entry", Err: err}
- }
- return nil
-}
-
-// save encodes [hst.State] and writes it to the underlying file.
-// An error is returned if a file already exists with the same identifier.
-// save does not validate the embedded [hst.Config].
-func (eh *stateEntryHandle) save(state *hst.State) error {
- f, err := eh.open(os.O_RDWR|os.O_CREATE|os.O_EXCL, 0600)
- if err != nil {
- return err
- }
-
- err = entryEncode(f, state)
- if closeErr := f.Close(); closeErr != nil && err == nil {
- err = &hst.AppError{Step: "close state file", Err: closeErr}
- }
- return err
-}
-
-// load loads and validates the state entry header, and returns the [hst.Enablement] byte.
-// for a non-nil v, the full state payload is decoded and stored in the value pointed to by v.
-// load validates the embedded hst.Config value.
-func (eh *stateEntryHandle) load(v *hst.State) (hst.Enablement, error) {
- f, err := eh.open(os.O_RDONLY, 0)
- if err != nil {
- return 0, err
- }
-
- var et hst.Enablement
- if v != nil {
- et, err = entryDecode(f, v)
- if err == nil && v.ID != eh.ID {
- err = &hst.AppError{Step: "validate state identifier", Err: os.ErrInvalid,
- Msg: fmt.Sprintf("state entry %s has unexpected id %s", eh.ID.String(), v.ID.String())}
- }
- } else {
- et, err = entryDecodeHeader(f)
- }
-
- if closeErr := f.Close(); closeErr != nil && err == nil {
- err = &hst.AppError{Step: "close state file", Err: closeErr}
- }
- return et, err
-}
-
-// storeHandle is a handle on a stateStore segment.
-// Initialised by stateStore.identityHandle.
-type storeHandle struct {
- // Identity of instances tracked by this segment.
- identity int
- // Pathname of directory that the segment referred to by storeHandle is rooted in.
- path *check.Absolute
- // Inter-process mutex to synchronise operations against resources in this segment.
- fileMu *lockedfile.Mutex
-
- // Must be held alongside fileMu.
- mu sync.Mutex
-}
-
-// entries returns an iterator over all stateEntryHandle held in this segment.
-// Must be called while holding a lock on mu and fileMu.
-// A non-nil error attached to a stateEntryHandle indicates a malformed identifier and is of type [hst.AppError].
-// A non-nil error returned by entries is of type [hst.AppError].
-func (h *storeHandle) entries() (iter.Seq[*stateEntryHandle], int, error) {
- // for error reporting
- const step = "read store segment entries"
-
- // read directory contents, should only contain storeMutexName and identifier
- var entries []os.DirEntry
- if pl, err := os.ReadDir(h.path.String()); err != nil {
- return nil, -1, &hst.AppError{Step: step, Err: err}
- } else {
- entries = pl
- }
-
- // expects lock file
- l := len(entries)
- if l > 0 {
- l--
- }
-
- return func(yield func(*stateEntryHandle) bool) {
- for _, ent := range entries {
- var eh = stateEntryHandle{pathname: h.path.Append(ent.Name())}
-
- // this should never happen
- if ent.IsDir() {
- eh.decodeErr = &hst.AppError{Step: step,
- Err: errors.New("unexpected directory " + strconv.Quote(ent.Name()) + " in store")}
- goto out
- }
-
- // silently skip lock file
- if ent.Name() == storeMutexName {
- continue
- }
-
- // this either indicates a serious bug or external interference
- if err := eh.ID.UnmarshalText([]byte(ent.Name())); err != nil {
- eh.decodeErr = &hst.AppError{Step: "decode store segment entry", Err: err}
- goto out
- }
-
- out:
- if !yield(&eh) {
- break
- }
- }
- }, l, nil
-}
diff --git a/internal/state/segment_test.go b/internal/state/segment_test.go
deleted file mode 100644
index 834cb99a..00000000
--- a/internal/state/segment_test.go
+++ /dev/null
@@ -1,259 +0,0 @@
-package state
-
-import (
- "errors"
- "iter"
- "os"
- "reflect"
- "slices"
- "strings"
- "syscall"
- "testing"
-
- "hakurei.app/container/check"
- "hakurei.app/container/stub"
- "hakurei.app/hst"
- "hakurei.app/internal/lockedfile"
-)
-
-func TestStateEntryHandle(t *testing.T) {
- t.Parallel()
-
- t.Run("lockout", func(t *testing.T) {
- t.Parallel()
- wantErr := func() error { return stub.UniqueError(0) }
- eh := stateEntryHandle{decodeErr: wantErr(), pathname: check.MustAbs("/proc/nonexistent")}
-
- if _, err := eh.open(-1, 0); !reflect.DeepEqual(err, wantErr()) {
- t.Errorf("open: error = %v, want %v", err, wantErr())
- }
- if err := eh.destroy(); !reflect.DeepEqual(err, wantErr()) {
- t.Errorf("destroy: error = %v, want %v", err, wantErr())
- }
- if err := eh.save(nil); !reflect.DeepEqual(err, wantErr()) {
- t.Errorf("save: error = %v, want %v", err, wantErr())
- }
- if _, err := eh.load(nil); !reflect.DeepEqual(err, wantErr()) {
- t.Errorf("load: error = %v, want %v", err, wantErr())
- }
- })
-
- t.Run("od", func(t *testing.T) {
- t.Parallel()
-
- {
- eh := stateEntryHandle{pathname: check.MustAbs(t.TempDir()).Append("entry")}
- if f, err := eh.open(os.O_CREATE|syscall.O_EXCL, 0); err != nil {
- t.Fatalf("open: error = %v", err)
- } else if err = f.Close(); err != nil {
- t.Errorf("Close: error = %v", err)
- }
- if err := eh.destroy(); err != nil {
- t.Fatalf("destroy: error = %v", err)
- }
- }
-
- t.Run("nonexistent", func(t *testing.T) {
- t.Parallel()
- eh := stateEntryHandle{pathname: check.MustAbs("/proc/nonexistent")}
-
- wantErrOpen := &hst.AppError{Step: "open state entry",
- Err: &os.PathError{Op: "open", Path: "/proc/nonexistent", Err: syscall.ENOENT}}
- if _, err := eh.open(os.O_CREATE|syscall.O_EXCL, 0); !reflect.DeepEqual(err, wantErrOpen) {
- t.Errorf("open: error = %#v, want %#v", err, wantErrOpen)
- }
-
- wantErrDestroy := &hst.AppError{Step: "destroy state entry",
- Err: &os.PathError{Op: "remove", Path: "/proc/nonexistent", Err: syscall.ENOENT}}
- if err := eh.destroy(); !reflect.DeepEqual(err, wantErrDestroy) {
- t.Errorf("destroy: error = %#v, want %#v", err, wantErrDestroy)
- }
- })
- })
-
- t.Run("saveload", func(t *testing.T) {
- t.Parallel()
- eh := stateEntryHandle{pathname: check.MustAbs(t.TempDir()).Append("entry"),
- ID: newTemplateState().ID}
-
- if err := eh.save(newTemplateState()); err != nil {
- t.Fatalf("save: error = %v", err)
- }
-
- t.Run("validate", func(t *testing.T) {
- t.Parallel()
-
- t.Run("internal", func(t *testing.T) {
- t.Parallel()
-
- var got hst.State
- if f, err := os.Open(eh.pathname.String()); err != nil {
- t.Fatal(err.Error())
- } else if _, err = entryDecode(f, &got); err != nil {
- t.Fatalf("entryDecode: error = %v", err)
- } else if err = f.Close(); err != nil {
- t.Fatal(f.Close())
- }
-
- if want := newTemplateState(); !reflect.DeepEqual(&got, want) {
- t.Errorf("entryDecode: %#v, want %#v", &got, want)
- }
- })
-
- t.Run("load header only", func(t *testing.T) {
- t.Parallel()
-
- if et, err := eh.load(nil); err != nil {
- t.Fatalf("load: error = %v", err)
- } else if want := newTemplateState().Enablements.Unwrap(); et != want {
- t.Errorf("load: et = %x, want %x", et, want)
- }
- })
-
- t.Run("load", func(t *testing.T) {
- t.Parallel()
-
- var got hst.State
- if _, err := eh.load(&got); err != nil {
- t.Fatalf("load: error = %v", err)
- } else if want := newTemplateState(); !reflect.DeepEqual(&got, want) {
- t.Errorf("load: %#v, want %#v", &got, want)
- }
- })
-
- t.Run("load inconsistent", func(t *testing.T) {
- t.Parallel()
- wantErr := &hst.AppError{Step: "validate state identifier", Err: os.ErrInvalid,
- Msg: "state entry 00000000000000000000000000000000 has unexpected id aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"}
-
- ehi := stateEntryHandle{pathname: eh.pathname}
- if _, err := ehi.load(new(hst.State)); !reflect.DeepEqual(err, wantErr) {
- t.Errorf("load: error = %#v, want %#v", err, wantErr)
- }
- })
- })
- })
-}
-
-func TestStoreHandle(t *testing.T) {
- t.Parallel()
-
- testCases := []struct {
- name string
- ents [2][]string
- want func(newEh func(err error, name string) *stateEntryHandle) []*stateEntryHandle
- ext func(t *testing.T, entries iter.Seq[*stateEntryHandle], n int)
- }{
- {"errors", [2][]string{{
- "e81eb203b4190ac5c3842ef44d429945",
- "lock",
- "f0-invalid",
- }, {
- "f1-directory",
- }}, func(newEh func(err error, name string) *stateEntryHandle) []*stateEntryHandle {
- return []*stateEntryHandle{
- newEh(nil, "e81eb203b4190ac5c3842ef44d429945"),
- newEh(&hst.AppError{Step: "decode store segment entry",
- Err: hst.IdentifierDecodeError{Err: hst.ErrIdentifierLength}}, "f0-invalid"),
- newEh(&hst.AppError{Step: "read store segment entries",
- Err: errors.New(`unexpected directory "f1-directory" in store`)}, "f1-directory"),
- }
- }, nil},
-
- {"success", [2][]string{{
- "e81eb203b4190ac5c3842ef44d429945",
- "7958cfbb9272d9cf9cfd61c85afa13f1",
- "d0b5f7446dd5bd3424ff2f7ac9cace1e",
- "c8c8e2c4aea5c32fe47240ff8caa874e",
- "fa0d30b249d80f155a1f80ceddcc32f2",
- "lock",
- }}, func(newEh func(err error, name string) *stateEntryHandle) []*stateEntryHandle {
- return []*stateEntryHandle{
- newEh(nil, "7958cfbb9272d9cf9cfd61c85afa13f1"),
- newEh(nil, "c8c8e2c4aea5c32fe47240ff8caa874e"),
- newEh(nil, "d0b5f7446dd5bd3424ff2f7ac9cace1e"),
- newEh(nil, "e81eb203b4190ac5c3842ef44d429945"),
- newEh(nil, "fa0d30b249d80f155a1f80ceddcc32f2"),
- }
- }, func(t *testing.T, entries iter.Seq[*stateEntryHandle], n int) {
- if n != 5 {
- t.Fatalf("entries: n = %d", n)
- }
-
- // check partial drain
- for range entries {
- break
- }
- }},
- }
- for _, tc := range testCases {
- t.Run(tc.name, func(t *testing.T) {
- t.Parallel()
-
- p := check.MustAbs(t.TempDir()).Append("segment")
- if err := os.Mkdir(p.String(), 0700); err != nil {
- t.Fatal(err.Error())
- }
- createEntries(t, p, tc.ents)
-
- var got []*stateEntryHandle
- if entries, n, err := (&storeHandle{
- identity: -0xbad,
- path: p,
- fileMu: lockedfile.MutexAt(p.Append("lock").String()),
- }).entries(); err != nil {
- t.Fatalf("entries: error = %v", err)
- } else {
- got = slices.AppendSeq(make([]*stateEntryHandle, 0, n), entries)
- if tc.ext != nil {
- tc.ext(t, entries, n)
- }
- }
-
- slices.SortFunc(got, func(a, b *stateEntryHandle) int { return strings.Compare(a.pathname.String(), b.pathname.String()) })
- want := tc.want(func(err error, name string) *stateEntryHandle {
- eh := stateEntryHandle{decodeErr: err, pathname: p.Append(name)}
- if err == nil {
- if err = eh.UnmarshalText([]byte(name)); err != nil {
- t.Fatalf("UnmarshalText: error = %v", err)
- }
- }
- return &eh
- })
-
- if !reflect.DeepEqual(got, want) {
- t.Errorf("entries: %q, want %q", got, want)
- }
- })
- }
-
- t.Run("nonexistent", func(t *testing.T) {
- var wantErr = &hst.AppError{Step: "read store segment entries", Err: &os.PathError{
- Op: "open",
- Path: "/proc/nonexistent",
- Err: syscall.ENOENT,
- }}
- if _, _, err := (&storeHandle{
- identity: -0xbad,
- path: check.MustAbs("/proc/nonexistent"),
- }).entries(); !reflect.DeepEqual(err, wantErr) {
- t.Fatalf("entries: error = %#v, want %#v", err, wantErr)
- }
- })
-}
-
-// createEntries creates file and directory entries in the specified prefix.
-func createEntries(t *testing.T, prefix *check.Absolute, ents [2][]string) {
- for _, s := range ents[0] {
- if f, err := os.OpenFile(prefix.Append(s).String(), os.O_CREATE|os.O_EXCL, 0600); err != nil {
- t.Fatal(err.Error())
- } else if err = f.Close(); err != nil {
- t.Fatal(err.Error())
- }
- }
- for _, s := range ents[1] {
- if err := os.Mkdir(prefix.Append(s).String(), 0700); err != nil {
- t.Fatal(err.Error())
- }
- }
-}
diff --git a/internal/state/state.go b/internal/state/state.go
deleted file mode 100644
index 62b31865..00000000
--- a/internal/state/state.go
+++ /dev/null
@@ -1,131 +0,0 @@
-// Package state provides cross-process state tracking for hakurei container instances.
-package state
-
-import (
- "strconv"
-
- "hakurei.app/container/check"
- "hakurei.app/hst"
- "hakurei.app/message"
-)
-
-/* this provides an implementation of Store on top of the improved state tracking to ease in the changes */
-
-type Store interface {
- // Do calls f exactly once and ensures store exclusivity until f returns.
- // Returns whether f is called and any errors during the locking process.
- // Cursor provided to f becomes invalid as soon as f returns.
- Do(identity int, f func(c Cursor)) (ok bool, err error)
-
- // List queries the store and returns a list of identities known to the store.
- // Note that some or all returned identities might not have any active apps.
- List() (identities []int, err error)
-}
-
-func (s *stateStore) Do(identity int, f func(c Cursor)) (bool, error) {
- if h, err := s.identityHandle(identity); err != nil {
- return false, err
- } else {
- return h.do(f)
- }
-}
-
-// storeAdapter satisfies [Store] via stateStore.
-type storeAdapter struct {
- msg message.Msg
- *stateStore
-}
-
-func (s storeAdapter) List() ([]int, error) {
- segments, n, err := s.segments()
- if err != nil {
- return nil, err
- }
-
- identities := make([]int, 0, n)
- for si := range segments {
- if si.err != nil {
- if m, ok := message.GetMessage(err); ok {
- s.msg.Verbose(m)
- } else {
- // unreachable
- return nil, err
- }
- continue
- }
- identities = append(identities, si.identity)
- }
- return identities, nil
-}
-
-// NewMulti returns an instance of the multi-file store.
-func NewMulti(msg message.Msg, prefix *check.Absolute) Store {
- return storeAdapter{msg, newStore(prefix.Append("state"))}
-}
-
-// Cursor provides access to the store of an identity.
-type Cursor interface {
- Save(state *hst.State) error
- Destroy(id hst.ID) error
- Load() (map[hst.ID]*hst.State, error)
- Len() (int, error)
-}
-
-// do implements stateStore.Do on storeHandle.
-func (h *storeHandle) do(f func(c Cursor)) (bool, error) {
- if unlock, err := h.fileMu.Lock(); err != nil {
- return false, &hst.AppError{Step: "acquire lock on store segment " + strconv.Itoa(h.identity), Err: err}
- } else {
- defer unlock()
- }
-
- f(h)
- return true, nil
-}
-
-/* these compatibility methods must only be called while fileMu is held */
-
-func (h *storeHandle) Save(state *hst.State) error {
- return (&stateEntryHandle{nil, h.path.Append(state.ID.String()), state.ID}).save(state)
-}
-
-func (h *storeHandle) Destroy(id hst.ID) error {
- return (&stateEntryHandle{nil, h.path.Append(id.String()), id}).destroy()
-}
-
-func (h *storeHandle) Load() (map[hst.ID]*hst.State, error) {
- entries, n, err := h.entries()
- if err != nil {
- return nil, err
- }
-
- r := make(map[hst.ID]*hst.State, n)
- for eh := range entries {
- if eh.decodeErr != nil {
- err = eh.decodeErr
- break
- }
- var s hst.State
- if _, err = eh.load(&s); err != nil {
- break
- }
- r[eh.ID] = &s
- }
- return r, err
-}
-
-func (h *storeHandle) Len() (int, error) {
- entries, _, err := h.entries()
- if err != nil {
- return -1, err
- }
-
- var n int
- for eh := range entries {
- if eh.decodeErr != nil {
- err = eh.decodeErr
- }
- n++
- }
- return n, err
-}
diff --git a/internal/state/state_test.go b/internal/state/state_test.go
deleted file mode 100644
index eed2c890..00000000
--- a/internal/state/state_test.go
+++ /dev/null
@@ -1,120 +0,0 @@
-package state_test
-
-import (
- "log"
- "math/rand"
- "reflect"
- "slices"
- "testing"
- "time"
-
- "hakurei.app/container/check"
- "hakurei.app/hst"
- "hakurei.app/internal/state"
- "hakurei.app/message"
-)
-
-func TestMulti(t *testing.T) {
- s := state.NewMulti(message.NewMsg(log.New(log.Writer(), "multi: ", 0)), check.MustAbs(t.TempDir()))
-
- t.Run("list empty store", func(t *testing.T) {
- if identities, err := s.List(); err != nil {
- t.Fatalf("List: error = %v", err)
- } else if len(identities) != 0 {
- t.Fatalf("List: identities = %#v", identities)
- }
- })
-
- const (
- insertEntryChecked = iota
- insertEntryNoCheck
- insertEntryOtherApp
-
- tl
- )
-
- var tc [tl]hst.State
- for i := 0; i < tl; i++ {
- if err := hst.NewInstanceID(&tc[i].ID); err != nil {
- t.Fatalf("cannot create dummy state: %v", err)
- }
- tc[i].PID = rand.Int()
- tc[i].Config = hst.Template()
- tc[i].Time = time.Now()
- }
-
- do := func(identity int, f func(c state.Cursor)) {
- if ok, err := s.Do(identity, f); err != nil {
- t.Fatalf("Do: ok = %v, error = %v", ok, err)
- }
- }
-
- insert := func(i, identity int) {
- do(identity, func(c state.Cursor) {
- if err := c.Save(&tc[i]); err != nil {
- t.Fatalf("Save: error = %v", err)
- }
- })
- }
-
- check := func(i, identity int) {
- do(identity, func(c state.Cursor) {
- if entries, err := c.Load(); err != nil {
- t.Fatalf("Load: error = %v", err)
- } else if got, ok := entries[tc[i].ID]; !ok {
- t.Fatalf("Load: entry %s missing", &tc[i].ID)
- } else {
- got.Time = tc[i].Time
- if !reflect.DeepEqual(got, &tc[i]) {
- t.Fatalf("Load: entry %s got %#v, want %#v", &tc[i].ID, got, &tc[i])
- }
- }
- })
- }
-
- // insert entry checked
- insert(insertEntryChecked, 0)
- check(insertEntryChecked, 0)
-
- // insert entry unchecked
- insert(insertEntryNoCheck, 0)
-
- // insert entry different identity
- insert(insertEntryOtherApp, 1)
- check(insertEntryOtherApp, 1)
-
- // check previous insertion
- check(insertEntryNoCheck, 0)
-
- // list identities
- if identities, err := s.List(); err != nil {
- t.Fatalf("List: error = %v", err)
- } else {
- slices.Sort(identities)
- want := []int{0, 1}
- if !slices.Equal(identities, want) {
- t.Fatalf("List() = %#v, want %#v", identities, want)
- }
- }
-
- // join store
- if entries, err := state.Join(s); err != nil {
- t.Fatalf("Join: error = %v", err)
- } else if len(entries) != 3 {
- t.Fatalf("Join(s) = %#v", entries)
- }
-
- // clear identity 1
- do(1, func(c state.Cursor) {
- if err := c.Destroy(tc[insertEntryOtherApp].ID); err != nil {
- t.Fatalf("Destroy: error = %v", err)
- }
- })
- do(1, func(c state.Cursor) {
- if l, err := c.Len(); err != nil {
- t.Fatalf("Len: error = %v", err)
- } else if l != 0 {
- t.Fatalf("Len: %d, want 0", l)
- }
- })
-}
diff --git a/internal/state/store.go b/internal/state/store.go
deleted file mode 100644
index 565e4ee5..00000000
--- a/internal/state/store.go
+++ /dev/null
@@ -1,162 +0,0 @@
-package state
-
-import (
- "errors"
- "io/fs"
- "iter"
- "os"
- "strconv"
- "sync"
- "syscall"
-
- "hakurei.app/container/check"
- "hakurei.app/hst"
- "hakurei.app/internal/lockedfile"
-)
-
-// storeMutexName is the pathname of the file backing [lockedfile.Mutex] of a stateStore and storeHandle.
-const storeMutexName = "lock"
-
-// A stateStore keeps track of [hst.State] via a well-known filesystem accessible to all hakurei priv-side processes.
-// Access to store data and related resources are synchronised on a per-segment basis via storeHandle.
-type stateStore struct {
- // Pathname of directory that the store is rooted in.
- base *check.Absolute
-
- // All currently known instances of storeHandle, keyed by their identity.
- handles sync.Map
-
- // Inter-process mutex to synchronise operations against the entire store.
- // Held during List and when initialising previously unknown identities during Do.
- // Must not be accessed directly. Callers should use the bigLock method instead.
- fileMu *lockedfile.Mutex
-
- // For creating the base directory.
- mkdirOnce sync.Once
- // Stored error value via mkdirOnce.
- mkdirErr error
-}
-
-// bigLock acquires fileMu on stateStore.
-// A non-nil error returned by bigLock is of type [hst.AppError].
-func (s *stateStore) bigLock() (unlock func(), err error) {
- s.mkdirOnce.Do(func() { s.mkdirErr = os.MkdirAll(s.base.String(), 0700) })
- if s.mkdirErr != nil {
- return nil, &hst.AppError{Step: "create state store directory", Err: s.mkdirErr}
- }
-
- if unlock, err = s.fileMu.Lock(); err != nil {
- return nil, &hst.AppError{Step: "acquire lock on the state store", Err: err}
- }
- return
-}
-
-// identityHandle loads or initialises a storeHandle for identity.
-// A non-nil error returned by identityHandle is of type [hst.AppError].
-func (s *stateStore) identityHandle(identity int) (*storeHandle, error) {
- h := new(storeHandle)
- h.mu.Lock()
-
- if v, ok := s.handles.LoadOrStore(identity, h); ok {
- h = v.(*storeHandle)
- } else {
- // acquire big lock to initialise previously unknown segment handle
- if unlock, err := s.bigLock(); err != nil {
- return nil, err
- } else {
- defer unlock()
- }
-
- h.identity = identity
- h.path = s.base.Append(strconv.Itoa(identity))
- h.fileMu = lockedfile.MutexAt(h.path.Append(storeMutexName).String())
-
- err := os.MkdirAll(h.path.String(), 0700)
- h.mu.Unlock()
- if err != nil && !errors.Is(err, fs.ErrExist) {
- // handle methods will likely return ENOENT
- s.handles.CompareAndDelete(identity, h)
- return nil, &hst.AppError{Step: "create store segment directory", Err: err}
- }
- }
- return h, nil
-}
-
-// segmentIdentity is produced by the iterator returned by stateStore.segments.
-type segmentIdentity struct {
- // Identity of the current segment.
- identity int
- // Error encountered while processing this segment.
- err error
-}
-
-// segments returns an iterator over all segmentIdentity known to the store.
-// To obtain a storeHandle on a segment, caller must then call identityHandle.
-// A non-nil error returned by segments is of type [hst.AppError].
-func (s *stateStore) segments() (iter.Seq[segmentIdentity], int, error) {
- // read directory contents, should only contain storeMutexName and identity
- var entries []os.DirEntry
-
- // acquire big lock to read store segment list
- if unlock, err := s.bigLock(); err != nil {
- return nil, -1, err
- } else {
- entries, err = os.ReadDir(s.base.String())
- unlock()
-
- if err != nil && !errors.Is(err, os.ErrNotExist) {
- return nil, -1, &hst.AppError{Step: "read store segments", Err: err}
- }
- }
-
- // expects lock file
- l := len(entries)
- if l > 0 {
- l--
- }
-
- return func(yield func(segmentIdentity) bool) {
- // for error reporting
- const step = "process store segment"
-
- for _, ent := range entries {
- si := segmentIdentity{identity: -1}
-
- // should only be the big lock
- if !ent.IsDir() {
- if ent.Name() == storeMutexName {
- continue
- }
-
- // this should never happen
- si.err = &hst.AppError{Step: step, Err: syscall.EISDIR,
- Msg: "skipped non-directory entry " + strconv.Quote(ent.Name())}
- goto out
- }
-
- // failure paths either indicates a serious bug or external interference
- if v, err := strconv.Atoi(ent.Name()); err != nil {
- si.err = &hst.AppError{Step: step, Err: err,
- Msg: "skipped non-identity entry " + strconv.Quote(ent.Name())}
- goto out
- } else if v < hst.IdentityMin || v > hst.IdentityMax {
- si.err = &hst.AppError{Step: step, Err: syscall.ERANGE,
- Msg: "skipped out of bounds entry " + strconv.Itoa(v)}
- goto out
- } else {
- si.identity = v
- }
-
- out:
- if !yield(si) {
- break
- }
- }
- }, l, nil
-}
-
-// newStore returns the address of a new instance of stateStore.
-// Multiple instances of stateStore rooted in the same directory is supported, but discouraged.
-func newStore(base *check.Absolute) *stateStore {
- return &stateStore{base: base, fileMu: lockedfile.MutexAt(base.Append(storeMutexName).String())}
-}
diff --git a/internal/state/store_test.go b/internal/state/store_test.go
deleted file mode 100644
index f58be18f..00000000
--- a/internal/state/store_test.go
+++ /dev/null
@@ -1,254 +0,0 @@
-package state
-
-import (
- "cmp"
- "iter"
- "os"
- "reflect"
- "slices"
- "strconv"
- "strings"
- "syscall"
- "testing"
-
- "hakurei.app/container/check"
- "hakurei.app/hst"
-)
-
-func TestStateStoreBigLock(t *testing.T) {
- t.Parallel()
-
- {
- s := newStore(check.MustAbs(t.TempDir()).Append("state"))
- for i := 0; i < 2; i++ { // check once behaviour
- if unlock, err := s.bigLock(); err != nil {
- t.Fatalf("bigLock: error = %v", err)
- } else {
- unlock()
- }
- }
- }
-
- t.Run("mkdir", func(t *testing.T) {
- t.Parallel()
-
- wantErr := &hst.AppError{Step: "create state store directory",
- Err: &os.PathError{Op: "mkdir", Path: "/proc/nonexistent", Err: syscall.ENOENT}}
- for i := 0; i < 2; i++ { // check once behaviour
- if _, err := newStore(check.MustAbs("/proc/nonexistent")).bigLock(); !reflect.DeepEqual(err, wantErr) {
- t.Errorf("bigLock: error = %#v, want %#v", err, wantErr)
- }
- }
- })
-
- t.Run("access", func(t *testing.T) {
- t.Parallel()
-
- base := check.MustAbs(t.TempDir()).Append("inaccessible")
- if err := os.MkdirAll(base.String(), 0); err != nil {
- t.Fatal(err.Error())
- }
-
- wantErr := &hst.AppError{Step: "acquire lock on the state store",
- Err: &os.PathError{Op: "open", Path: base.Append(storeMutexName).String(), Err: syscall.EACCES}}
- if _, err := newStore(base).bigLock(); !reflect.DeepEqual(err, wantErr) {
- t.Errorf("bigLock: error = %#v, want %#v", err, wantErr)
- }
- })
-}
-
-func TestStateStoreIdentityHandle(t *testing.T) {
- t.Parallel()
-
- t.Run("loadstore", func(t *testing.T) {
- t.Parallel()
-
- s := newStore(check.MustAbs(t.TempDir()).Append("store"))
-
- var handleAddr [8]*storeHandle
- checkHandle := func(identity int, load bool) {
- if h, err := s.identityHandle(identity); err != nil {
- t.Fatalf("identityHandle: error = %v", err)
- } else if load != (handleAddr[identity] != nil) {
- t.Fatalf("identityHandle: load = %v, want %v", load, handleAddr[identity] != nil)
- } else if !load {
- handleAddr[identity] = h
-
- if h.identity != identity {
- t.Errorf("identityHandle: identity = %d, want %d", h.identity, identity)
- }
- } else if h != handleAddr[identity] {
- t.Fatalf("identityHandle: %p, want %p", h, handleAddr[identity])
- }
- }
-
- checkHandle(0, false)
- checkHandle(1, false)
- checkHandle(2, false)
- checkHandle(3, false)
- checkHandle(7, false)
- checkHandle(7, true)
- checkHandle(2, true)
- checkHandle(1, true)
- checkHandle(2, true)
- checkHandle(0, true)
- })
-
- t.Run("access", func(t *testing.T) {
- t.Parallel()
-
- base := check.MustAbs(t.TempDir()).Append("inaccessible")
- if err := os.MkdirAll(base.String(), 0); err != nil {
- t.Fatal(err.Error())
- }
-
- wantErr := &hst.AppError{Step: "acquire lock on the state store",
- Err: &os.PathError{Op: "open", Path: base.Append(storeMutexName).String(), Err: syscall.EACCES}}
- if _, err := newStore(base).identityHandle(0); !reflect.DeepEqual(err, wantErr) {
- t.Errorf("identityHandle: error = %#v, want %#v", err, wantErr)
- }
- })
-
- t.Run("access segment", func(t *testing.T) {
- t.Parallel()
-
- base := check.MustAbs(t.TempDir()).Append("inaccessible")
- if err := os.MkdirAll(base.String(), 0700); err != nil {
- t.Fatal(err.Error())
- }
- if f, err := os.Create(base.Append(storeMutexName).String()); err != nil {
- t.Fatal(err.Error())
- } else if err = f.Close(); err != nil {
- t.Fatal(err.Error())
- }
- if err := os.Chmod(base.String(), 0100); err != nil {
- t.Fatal(err.Error())
- }
- t.Cleanup(func() {
- if err := os.Chmod(base.String(), 0700); err != nil {
- t.Fatal(err.Error())
- }
- })
-
- wantErr := &hst.AppError{Step: "create store segment directory",
- Err: &os.PathError{Op: "mkdir", Path: base.Append("0").String(), Err: syscall.EACCES}}
- if _, err := newStore(base).identityHandle(0); !reflect.DeepEqual(err, wantErr) {
- t.Errorf("identityHandle: error = %#v, want %#v", err, wantErr)
- }
- })
-}
-
-func TestStateStoreSegments(t *testing.T) {
- t.Parallel()
-
- testCases := []struct {
- name string
- ents [2][]string
- want []segmentIdentity
- ext func(t *testing.T, segments iter.Seq[segmentIdentity], n int)
- }{
- {"errors", [2][]string{{
- "f0-invalid-file",
- }, {
- "f1-invalid-syntax",
- "9999",
- "16384",
- }}, []segmentIdentity{
- {-1, &hst.AppError{Step: "process store segment", Err: syscall.EISDIR,
- Msg: `skipped non-directory entry "f0-invalid-file"`}},
- {-1, &hst.AppError{Step: "process store segment", Err: syscall.ERANGE,
- Msg: `skipped out of bounds entry 16384`}},
- {-1, &hst.AppError{Step: "process store segment",
- Err: &strconv.NumError{Func: "Atoi", Num: "f1-invalid-syntax", Err: strconv.ErrSyntax},
- Msg: `skipped non-identity entry "f1-invalid-syntax"`}},
- {9999, nil},
- }, nil},
-
- {"success", [2][]string{{
- "lock",
- }, {
- "0",
- "1",
- "2",
- "3",
- "4",
- "5",
- "6",
- "7",
- "9",
- "13",
- "20",
- "31",
- "197",
- }}, []segmentIdentity{
- {0, nil},
- {1, nil},
- {2, nil},
- {3, nil},
- {4, nil},
- {5, nil},
- {6, nil},
- {7, nil},
- {9, nil},
- {13, nil},
- {20, nil},
- {31, nil},
- {197, nil},
- }, func(t *testing.T, segments iter.Seq[segmentIdentity], n int) {
- if n != 13 {
- t.Fatalf("segments: n = %d", n)
- }
-
- // check partial drain
- for range segments {
- break
- }
- }},
- }
- for _, tc := range testCases {
- t.Run(tc.name, func(t *testing.T) {
- t.Parallel()
-
- base := check.MustAbs(t.TempDir()).Append("store")
- if err := os.Mkdir(base.String(), 0700); err != nil {
- t.Fatal(err.Error())
- }
- createEntries(t, base, tc.ents)
-
- var got []segmentIdentity
- if segments, n, err := newStore(base).segments(); err != nil {
- t.Fatalf("segments: error = %v", err)
- } else {
- got = slices.AppendSeq(make([]segmentIdentity, 0, n), segments)
- if tc.ext != nil {
- tc.ext(t, segments, n)
- }
- }
-
- slices.SortFunc(got, func(a, b segmentIdentity) int {
- if a.identity == b.identity {
- return strings.Compare(a.err.Error(), b.err.Error())
- }
- return cmp.Compare(a.identity, b.identity)
- })
- if !reflect.DeepEqual(got, tc.want) {
- t.Errorf("segments: %#v, want %#v", got, tc.want)
- }
- })
- }
-
- t.Run("access", func(t *testing.T) {
- t.Parallel()
-
- base := check.MustAbs(t.TempDir()).Append("inaccessible")
- if err := os.MkdirAll(base.String(), 0); err != nil {
- t.Fatal(err.Error())
- }
-
- wantErr := &hst.AppError{Step: "acquire lock on the state store",
- Err: &os.PathError{Op: "open", Path: base.Append(storeMutexName).String(), Err: syscall.EACCES}}
- if _, _, err := newStore(base).segments(); !reflect.DeepEqual(err, wantErr) {
- t.Errorf("segments: error = %#v, want %#v", err, wantErr)
- }
- })
-}
generated by cgit v1.3.1 (git 2.54.0) at 2026-08-30 09:40:33 +0000