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erasure_test.go
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/
erasure_test.go
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package trans
import (
"bytes"
"context"
"testing"
"time"
kv "github.com/filedag-project/mutcask"
logging "github.com/ipfs/go-log/v2"
)
func TestErasureClient(t *testing.T) {
ctx := context.Background()
addrList := []string{":3312", ":3313", ":3314", ":3315", ":3316"}
chunkServers := make([]*PServ, len(addrList))
for i, addr := range addrList {
db := kv.NewMemkv()
serv, err := NewPServ(ctx, addr, db)
if err != nil {
t.Fatal("failed to instance PServ ", err)
}
chunkServers[i] = serv
defer serv.Close()
}
// wait for server setup listener
time.Sleep(time.Millisecond * 200)
chunkClients := make([]Client, len(addrList))
for i, addr := range addrList {
cli := NewTransClient(ctx, "127.0.0.1"+addr, 1)
defer cli.Close()
chunkClients[i] = cli
}
client, err := NewErasureClient(chunkClients, 3, 2, "")
if err != nil {
t.Fatal(err)
}
// test put data
for _, d := range tdata {
if err := client.Put(d.k, d.v); err != nil {
t.Fatal("put data failed ", err)
}
}
// test get data
for _, d := range tdata {
v, err := client.Get(d.k)
if err != nil {
t.Fatal(err)
}
if !bytes.Equal(v[:len(d.v)], d.v) {
t.Fatal("value not match")
}
}
// test has data
for _, d := range tdata {
has, err := client.Has(d.k)
if err != nil {
t.Fatal(err)
}
if !has {
t.Fatal("should has key ", d.k)
}
}
// test all keys chan
kc, err := client.AllKeysChan("")
if err != nil {
t.Fatal(err)
}
for k := range kc {
t.Log(k)
}
// test delete data
for _, d := range tdata {
err := client.Delete(d.k)
if err != nil {
t.Fatal(err)
}
}
}
func TestErasureClientRecoverMode(t *testing.T) {
ctx := context.Background()
addrList := []string{":3212", ":3213", ":3214", ":3215", ":3216"}
chunkServers := make([]*PServ, len(addrList))
for i, addr := range addrList {
db := kv.NewMemkv()
serv, err := NewPServ(ctx, addr, db)
if err != nil {
t.Fatal("failed to instance PServ ", err)
}
chunkServers[i] = serv
defer serv.Close()
}
// wait for server setup listener
time.Sleep(time.Millisecond * 200)
chunkClients := make([]Client, len(addrList))
for i, addr := range addrList {
cli := NewTransClient(ctx, "127.0.0.1"+addr, 1)
defer cli.Close()
chunkClients[i] = cli
}
client, err := NewErasureClient(chunkClients, 3, 2, RecoverMode)
if err != nil {
t.Fatal(err)
}
// test put data
for _, d := range tdata {
if err := client.Put(d.k, d.v); err != nil {
t.Fatal("put data failed ", err)
}
}
recoverIdx := 2
for _, d := range tdata {
err := chunkClients[recoverIdx].Delete(d.k)
if err != nil {
t.Fatal(err)
}
}
// get data with recover mode
for _, d := range tdata {
v, err := client.Get(d.k)
if err != nil {
t.Fatal(err)
}
if !bytes.Equal(v[:len(d.v)], d.v) {
t.Fatal("value not match")
}
}
// data should been restored
for _, d := range tdata {
_, err := chunkClients[recoverIdx].Get(d.k)
if err != nil {
t.Fatal(err)
}
}
}
func TestDecode(t *testing.T) {
logging.SetLogLevel("*", "info")
data := []byte("Reed-Solomon Erasure Coding in Go, with speeds exceeding 1GB/s/cpu core implemented in pure Go.")
dataShards := 4
parShards := 1
shards, err := ErasueEncode(data, dataShards, parShards)
if err != nil {
t.Fatal(err)
}
if len(shards) != dataShards+parShards {
t.Fatal("shards number not match")
}
d, _, err := ErasueDecode(shards, dataShards, parShards)
if err != nil {
t.Fatal(err)
}
if len(d) < len(data) {
t.Fatal("decoded data too short")
}
if !bytes.Equal(data, d[:len(data)]) {
t.Fatal("decoded data not match")
}
}
func TestEncode(t *testing.T) {
logging.SetLogLevel("*", "info")
data := []byte("Reed-Solomon Erasure Coding in Go, with speeds exceeding 1GB/s/cpu core implemented in pure Go.")
dataShards := 4
parShards := 1
shards, err := ErasueEncode(data, dataShards, parShards)
if err != nil {
t.Fatal(err)
}
if len(shards) != dataShards+parShards {
t.Fatal("shards number not match")
}
}