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authorethersphere <thesw@rm.eth>2018-06-20 20:06:27 +0800
committerethersphere <thesw@rm.eth>2018-06-22 03:10:31 +0800
commite187711c6545487d4cac3701f0f506bb536234e2 (patch)
treed2f6150f70b84b36e49a449082aeda267b4b9046 /cmd/swarm/export_test.go
parent574378edb50c907b532946a1d4654dbd6701b20a (diff)
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swarm: network rewrite merge
Diffstat (limited to 'cmd/swarm/export_test.go')
-rw-r--r--cmd/swarm/export_test.go139
1 files changed, 139 insertions, 0 deletions
diff --git a/cmd/swarm/export_test.go b/cmd/swarm/export_test.go
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+++ b/cmd/swarm/export_test.go
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+// Copyright 2018 The go-ethereum Authors
+// This file is part of go-ethereum.
+//
+// go-ethereum is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// go-ethereum is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
+
+package main
+
+import (
+ "bytes"
+ "crypto/md5"
+ "crypto/rand"
+ "io"
+ "io/ioutil"
+ "net/http"
+ "os"
+ "strings"
+ "testing"
+
+ "github.com/ethereum/go-ethereum/swarm"
+)
+
+// TestCLISwarmExportImport perform the following test:
+// 1. runs swarm node
+// 2. uploads a random file
+// 3. runs an export of the local datastore
+// 4. runs a second swarm node
+// 5. imports the exported datastore
+// 6. fetches the uploaded random file from the second node
+func TestCLISwarmExportImport(t *testing.T) {
+ cluster := newTestCluster(t, 1)
+
+ // generate random 10mb file
+ f, cleanup := generateRandomFile(t, 10000000)
+ defer cleanup()
+
+ // upload the file with 'swarm up' and expect a hash
+ up := runSwarm(t, "--bzzapi", cluster.Nodes[0].URL, "up", f.Name())
+ _, matches := up.ExpectRegexp(`[a-f\d]{64}`)
+ up.ExpectExit()
+ hash := matches[0]
+
+ var info swarm.Info
+ if err := cluster.Nodes[0].Client.Call(&info, "bzz_info"); err != nil {
+ t.Fatal(err)
+ }
+
+ cluster.Stop()
+ defer cluster.Cleanup()
+
+ // generate an export.tar
+ exportCmd := runSwarm(t, "db", "export", info.Path+"/chunks", info.Path+"/export.tar", strings.TrimPrefix(info.BzzKey, "0x"))
+ exportCmd.ExpectExit()
+
+ // start second cluster
+ cluster2 := newTestCluster(t, 1)
+
+ var info2 swarm.Info
+ if err := cluster2.Nodes[0].Client.Call(&info2, "bzz_info"); err != nil {
+ t.Fatal(err)
+ }
+
+ // stop second cluster, so that we close LevelDB
+ cluster2.Stop()
+ defer cluster2.Cleanup()
+
+ // import the export.tar
+ importCmd := runSwarm(t, "db", "import", info2.Path+"/chunks", info.Path+"/export.tar", strings.TrimPrefix(info2.BzzKey, "0x"))
+ importCmd.ExpectExit()
+
+ // spin second cluster back up
+ cluster2.StartExistingNodes(t, 1, strings.TrimPrefix(info2.BzzAccount, "0x"))
+
+ // try to fetch imported file
+ res, err := http.Get(cluster2.Nodes[0].URL + "/bzz:/" + hash)
+ if err != nil {
+ t.Fatal(err)
+ }
+
+ if res.StatusCode != 200 {
+ t.Fatalf("expected HTTP status %d, got %s", 200, res.Status)
+ }
+
+ // compare downloaded file with the generated random file
+ mustEqualFiles(t, f, res.Body)
+}
+
+func mustEqualFiles(t *testing.T, up io.Reader, down io.Reader) {
+ h := md5.New()
+ upLen, err := io.Copy(h, up)
+ if err != nil {
+ t.Fatal(err)
+ }
+ upHash := h.Sum(nil)
+ h.Reset()
+ downLen, err := io.Copy(h, down)
+ if err != nil {
+ t.Fatal(err)
+ }
+ downHash := h.Sum(nil)
+
+ if !bytes.Equal(upHash, downHash) || upLen != downLen {
+ t.Fatalf("downloaded imported file md5=%x (length %v) is not the same as the generated one mp5=%x (length %v)", downHash, downLen, upHash, upLen)
+ }
+}
+
+func generateRandomFile(t *testing.T, size int) (f *os.File, teardown func()) {
+ // create a tmp file
+ tmp, err := ioutil.TempFile("", "swarm-test")
+ if err != nil {
+ t.Fatal(err)
+ }
+
+ // callback for tmp file cleanup
+ teardown = func() {
+ tmp.Close()
+ os.Remove(tmp.Name())
+ }
+
+ // write 10mb random data to file
+ buf := make([]byte, 10000000)
+ _, err = rand.Read(buf)
+ if err != nil {
+ t.Fatal(err)
+ }
+ ioutil.WriteFile(tmp.Name(), buf, 0755)
+
+ return tmp, teardown
+}