func TestWriteRead2(t *testing.T) {
fmt.Println("testWriteRead2")
fmt.Println("Adding node to cluster")
ino := maggiefs.NewInode(0, maggiefs.FTYPE_REG, 0755, uint32(os.Getuid()), uint32(os.Getgid()))
id, err := testCluster.Names.AddInode(ino)
if err != nil {
t.Fatal(err)
}
ino.Inodeid = id
writer, err := client.NewInodeWriter(ino.Inodeid, testCluster.Leases, testCluster.Names, testCluster.Datas)
if err != nil {
t.Fatal(err)
}
// we wnat to write a bunch of bytes the way the fs does it, in chunks of 65536
bytes := make([]byte, 65536)
n, err := rand.Read(bytes)
if n < len(bytes) {
t.Fatal(fmt.Errorf("Only returned %d bytes in call to rand.Read", n))
}
if err != nil {
t.Fatal(err)
}
for i := 0; i < 5000; i++ {
n, err := writer.WriteAt(bytes, uint64(65536*i), uint32(len(bytes)))
if err != nil {
t.Fatal(err)
}
if n < uint32(len(bytes)) {
t.Fatal(fmt.Sprintf("Only wrote %d bytes out of %d", n, len(bytes)))
}
}
// then do that many reads across the file to confirm it's ok
readBytes := make([]byte, 65536)
reader, err := client.NewReader(ino.Inodeid, testCluster.Names, testCluster.Datas)
if err != nil {
t.Fatal(fmt.Sprintf("Error opening reader %s", err.Error()))
}
for i := 0; i < 5000; i++ {
n, err := reader.ReadAt(readBytes, uint64(65536*i), 0, uint32(len(readBytes)))
if err != nil {
t.Fatal(err)
}
if n < uint32(len(readBytes)) {
t.Fatal(fmt.Sprintf("Only read %d bytes out of %d", n, len(readBytes)))
}
for idx := 0; idx < 65536; idx++ {
if readBytes[idx] != bytes[idx] {
fmt.Printf("Bytes at beginning: %x : %x\n", readBytes[:5], bytes[:5])
//fmt.Printf("Bytes near offest: %x : %x\n",readBytes[idx-5:idx+5],bytes[idx-5:idx+5])
t.Fatal(fmt.Sprintf("Bytes not equal at offset %d, iteration %d : %x != %x", idx, i, readBytes[idx], bytes[idx]))
}
}
}
fmt.Println("Done TestReadWrite")
}
func TestShortRead(t *testing.T) {
fmt.Println("Adding node to cluster")
ino := maggiefs.NewInode(0, maggiefs.FTYPE_REG, 0755, uint32(os.Getuid()), uint32(os.Getgid()))
id, err := testCluster.Names.AddInode(ino)
if err != nil {
t.Fatal(err)
}
ino.Inodeid = id
writer, err := client.NewInodeWriter(ino.Inodeid, testCluster.Leases, testCluster.Names, testCluster.Datas)
if err != nil {
t.Fatal(err)
}
// 5 bytes
bytes := make([]byte, 5)
_, err = rand.Read(bytes)
if err != nil {
t.Fatal(err)
}
fmt.Println("Writing some bytes")
n, err := writer.WriteAt(bytes, 0, uint32(len(bytes)))
if err != nil {
t.Fatal(err)
}
if n < uint32(len(bytes)) {
t.Fatal(fmt.Sprintf("Only wrote %d bytes out of %d", n, len(bytes)))
}
readBytes := make([]byte, 4096)
r, err := client.NewReader(ino.Inodeid, testCluster.Names, testCluster.Datas)
if err != nil {
t.Fatal(fmt.Sprintf("Error opening reader %s", err.Error()))
}
n, err = r.ReadAt(readBytes, 0, 0, 5)
fmt.Printf("Read %d bytes\n", n)
if err != nil {
t.Fatal(err)
}
for idx := 0; idx < 5; idx++ {
if readBytes[idx] != bytes[idx] {
t.Fatal(fmt.Sprintf("Bytes not equal at offset %d : %x != %x", idx, readBytes[idx], bytes[idx]))
}
}
fmt.Println("Done TestShortRead")
}
func TestWriteRead(t *testing.T) {
fmt.Println("testWriteRead")
fmt.Println("Adding node to cluster")
ino := maggiefs.NewInode(0, maggiefs.FTYPE_REG, 0755, uint32(os.Getuid()), uint32(os.Getgid()))
id, err := testCluster.Names.AddInode(ino)
if err != nil {
t.Fatal(err)
}
ino.Inodeid = id
writer, err := client.NewInodeWriter(ino.Inodeid, testCluster.Leases, testCluster.Names, testCluster.Datas)
if err != nil {
t.Fatal(err)
}
// 200 MB to make us 2 blocks
bytes := make([]byte, 1024*1024*200)
_, err = rand.Read(bytes)
if err != nil {
t.Fatal(err)
}
fmt.Printf("first 5 before write %x\n", bytes[:5])
fmt.Println("Writing some bytes")
n, err := writer.WriteAt(bytes, 0, uint32(len(bytes)))
if err != nil {
t.Fatal(err)
}
if n < uint32(len(bytes)) {
t.Fatal(fmt.Sprintf("Only wrote %d bytes out of %d", n, len(bytes)))
}
readBytes := make([]byte, 1024*1024*200)
r, err := client.NewReader(ino.Inodeid, testCluster.Names, testCluster.Datas)
if err != nil {
t.Fatal(fmt.Sprintf("Error opening reader %s", err.Error()))
}
_, err = r.ReadAt(readBytes, 0, 0, 1024*1024*200)
if err != nil {
t.Fatal(err)
}
for idx, b := range readBytes {
if b != bytes[idx] {
t.Fatal(fmt.Sprintf("Bytes not equal at offset %d : %x != %x", idx, b, bytes[idx]))
}
}
}