import (
"bytes"
"crypto/md5"
- "crypto/sha1"
"errors"
"fmt"
"io"
"os"
"regexp"
"runtime"
+ "runtime/pprof"
"strings"
"sync"
"sync/atomic"
blocks map[string][]byte
refreshable map[string]bool
onPut func(bufcopy []byte) // called from PutB, before acquiring lock
+ authToken string // client's auth token (used for signing locators)
+ sigkey string // blob signing key
+ sigttl time.Duration // blob signing ttl
sync.RWMutex
}
}
func (kcs *keepClientStub) PutB(p []byte) (string, int, error) {
- locator := fmt.Sprintf("%x+%d+A12345@abcde", md5.Sum(p), len(p))
+ locator := SignLocator(fmt.Sprintf("%x+%d", md5.Sum(p), len(p)), kcs.authToken, time.Now().Add(kcs.sigttl), kcs.sigttl, []byte(kcs.sigkey))
buf := make([]byte, len(p))
copy(buf, p)
if kcs.onPut != nil {
return locator, 1, nil
}
-var localOrRemoteSignature = regexp.MustCompile(`\+[AR][^+]*`)
+var reRemoteSignature = regexp.MustCompile(`\+[AR][^+]*`)
func (kcs *keepClientStub) LocalLocator(locator string) (string, error) {
+ if strings.Contains(locator, "+A") {
+ return locator, nil
+ }
kcs.Lock()
defer kcs.Unlock()
if strings.Contains(locator, "+R") {
return "", fmt.Errorf("kcs.refreshable[%q]==false", locator)
}
}
- fakeSig := fmt.Sprintf("+A%x@%x", sha1.Sum(nil), time.Now().Add(time.Hour*24*14).Unix())
- return localOrRemoteSignature.ReplaceAllLiteralString(locator, fakeSig), nil
+ locator = reRemoteSignature.ReplaceAllLiteralString(locator, "")
+ locator = SignLocator(locator, kcs.authToken, time.Now().Add(kcs.sigttl), kcs.sigttl, []byte(kcs.sigkey))
+ return locator, nil
}
type CollectionFSSuite struct {
s.kc = &keepClientStub{
blocks: map[string][]byte{
"3858f62230ac3c915f300c664312c63f": []byte("foobar"),
- }}
+ },
+ sigkey: fixtureBlobSigningKey,
+ sigttl: fixtureBlobSigningTTL,
+ authToken: fixtureActiveToken,
+ }
s.fs, err = s.coll.FileSystem(s.client, s.kc)
c.Assert(err, check.IsNil)
}
waitForFlush(0, nDirs*67<<20)
}
+// Even when writing lots of files/dirs from different goroutines, as
+// long as Flush(dir,false) is called after writing each file,
+// unflushed data should be limited to one full block per
+// concurrentWriter, plus one nearly-full block at the end of each
+// dir/stream.
+func (s *CollectionFSSuite) TestMaxUnflushed(c *check.C) {
+ nDirs := int64(8)
+ maxUnflushed := (int64(concurrentWriters) + nDirs) << 26
+
+ fs, err := (&Collection{}).FileSystem(s.client, s.kc)
+ c.Assert(err, check.IsNil)
+
+ release := make(chan struct{})
+ timeout := make(chan struct{})
+ time.AfterFunc(10*time.Second, func() { close(timeout) })
+ var putCount, concurrency int64
+ var unflushed int64
+ s.kc.onPut = func(p []byte) {
+ defer atomic.AddInt64(&unflushed, -int64(len(p)))
+ cur := atomic.AddInt64(&concurrency, 1)
+ defer atomic.AddInt64(&concurrency, -1)
+ pc := atomic.AddInt64(&putCount, 1)
+ if pc < int64(concurrentWriters) {
+ // Block until we reach concurrentWriters, to
+ // make sure we're really accepting concurrent
+ // writes.
+ select {
+ case <-release:
+ case <-timeout:
+ c.Error("timeout")
+ }
+ } else if pc == int64(concurrentWriters) {
+ // Unblock the first N-1 PUT reqs.
+ close(release)
+ }
+ c.Assert(cur <= int64(concurrentWriters), check.Equals, true)
+ c.Assert(atomic.LoadInt64(&unflushed) <= maxUnflushed, check.Equals, true)
+ }
+
+ var owg sync.WaitGroup
+ megabyte := make([]byte, 1<<20)
+ for i := int64(0); i < nDirs; i++ {
+ dir := fmt.Sprintf("dir%d", i)
+ fs.Mkdir(dir, 0755)
+ owg.Add(1)
+ go func() {
+ defer owg.Done()
+ defer fs.Flush(dir, true)
+ var iwg sync.WaitGroup
+ defer iwg.Wait()
+ for j := 0; j < 67; j++ {
+ iwg.Add(1)
+ go func(j int) {
+ defer iwg.Done()
+ f, err := fs.OpenFile(fmt.Sprintf("%s/file%d", dir, j), os.O_WRONLY|os.O_CREATE, 0)
+ c.Assert(err, check.IsNil)
+ defer f.Close()
+ n, err := f.Write(megabyte)
+ c.Assert(err, check.IsNil)
+ atomic.AddInt64(&unflushed, int64(n))
+ fs.Flush(dir, false)
+ }(j)
+ }
+ }()
+ }
+ owg.Wait()
+ fs.Flush("", true)
+}
+
+func (s *CollectionFSSuite) TestFlushStress(c *check.C) {
+ done := false
+ defer func() { done = true }()
+ time.AfterFunc(10*time.Second, func() {
+ if !done {
+ pprof.Lookup("goroutine").WriteTo(os.Stderr, 1)
+ panic("timeout")
+ }
+ })
+
+ wrote := 0
+ s.kc.onPut = func(p []byte) {
+ s.kc.Lock()
+ s.kc.blocks = map[string][]byte{}
+ wrote++
+ defer c.Logf("wrote block %d, %d bytes", wrote, len(p))
+ s.kc.Unlock()
+ time.Sleep(20 * time.Millisecond)
+ }
+
+ fs, err := (&Collection{}).FileSystem(s.client, s.kc)
+ c.Assert(err, check.IsNil)
+
+ data := make([]byte, 1<<20)
+ for i := 0; i < 3; i++ {
+ dir := fmt.Sprintf("dir%d", i)
+ fs.Mkdir(dir, 0755)
+ for j := 0; j < 200; j++ {
+ data[0] = byte(j)
+ f, err := fs.OpenFile(fmt.Sprintf("%s/file%d", dir, j), os.O_WRONLY|os.O_CREATE, 0)
+ c.Assert(err, check.IsNil)
+ _, err = f.Write(data)
+ c.Assert(err, check.IsNil)
+ f.Close()
+ fs.Flush(dir, false)
+ }
+ _, err := fs.MarshalManifest(".")
+ c.Check(err, check.IsNil)
+ }
+}
+
+func (s *CollectionFSSuite) TestFlushShort(c *check.C) {
+ s.kc.onPut = func([]byte) {
+ s.kc.Lock()
+ s.kc.blocks = map[string][]byte{}
+ s.kc.Unlock()
+ }
+ fs, err := (&Collection{}).FileSystem(s.client, s.kc)
+ c.Assert(err, check.IsNil)
+ for _, blocksize := range []int{8, 1000000} {
+ dir := fmt.Sprintf("dir%d", blocksize)
+ err = fs.Mkdir(dir, 0755)
+ c.Assert(err, check.IsNil)
+ data := make([]byte, blocksize)
+ for i := 0; i < 100; i++ {
+ f, err := fs.OpenFile(fmt.Sprintf("%s/file%d", dir, i), os.O_WRONLY|os.O_CREATE, 0)
+ c.Assert(err, check.IsNil)
+ _, err = f.Write(data)
+ c.Assert(err, check.IsNil)
+ f.Close()
+ fs.Flush(dir, false)
+ }
+ fs.Flush(dir, true)
+ _, err := fs.MarshalManifest(".")
+ c.Check(err, check.IsNil)
+ }
+}
+
func (s *CollectionFSSuite) TestBrokenManifests(c *check.C) {
for _, txt := range []string{
"\n",
projects / arvados.git / blobdiff