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Merge pull request ethereum#353 from ethersphere/adapt_export_import
fix swarm db export import
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,139 @@ | ||
| // 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/>. | ||
|
|
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| package main | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "crypto/md5" | ||
| "crypto/rand" | ||
| "io" | ||
| "io/ioutil" | ||
| "net/http" | ||
| "os" | ||
| "strings" | ||
| "testing" | ||
|
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| "github.com/ethereum/go-ethereum/swarm" | ||
| ) | ||
|
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| // 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) | ||
|
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| // generate random 10mb file | ||
| f, cleanup := generateRandomFile(t, 10000000) | ||
| defer cleanup() | ||
|
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| // 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] | ||
|
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| var info swarm.Info | ||
| if err := cluster.Nodes[0].Client.Call(&info, "bzz_info"); err != nil { | ||
| t.Fatal(err) | ||
| } | ||
|
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| cluster.Stop() | ||
| defer cluster.Cleanup() | ||
|
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| // generate an export.tar | ||
| exportCmd := runSwarm(t, "db", "export", info.Path+"/chunks", info.Path+"/export.tar", strings.TrimPrefix(info.BzzKey, "0x")) | ||
| exportCmd.ExpectExit() | ||
|
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| // start second cluster | ||
| cluster2 := newTestCluster(t, 1) | ||
|
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| var info2 swarm.Info | ||
| if err := cluster2.Nodes[0].Client.Call(&info2, "bzz_info"); err != nil { | ||
| t.Fatal(err) | ||
| } | ||
|
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| // stop second cluster, so that we close LevelDB | ||
| cluster2.Stop() | ||
| defer cluster2.Cleanup() | ||
|
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| // import the export.tar | ||
| importCmd := runSwarm(t, "db", "import", info2.Path+"/chunks", info.Path+"/export.tar", strings.TrimPrefix(info2.BzzKey, "0x")) | ||
| importCmd.ExpectExit() | ||
|
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| // spin second cluster back up | ||
| cluster2.StartExistingNodes(t, 1, strings.TrimPrefix(info2.BzzAccount, "0x")) | ||
|
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| // try to fetch imported file | ||
| res, err := http.Get(cluster2.Nodes[0].URL + "/bzz:/" + hash) | ||
| if err != nil { | ||
| t.Fatal(err) | ||
| } | ||
|
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| if res.StatusCode != 200 { | ||
| t.Fatalf("expected HTTP status %d, got %s", 200, res.Status) | ||
| } | ||
|
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| // compare downloaded file with the generated random file | ||
| mustEqualFiles(t, f, res.Body) | ||
| } | ||
|
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| 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) | ||
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| 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) | ||
| } | ||
| } | ||
|
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| 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) | ||
| } | ||
|
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| // callback for tmp file cleanup | ||
| teardown = func() { | ||
| tmp.Close() | ||
| os.Remove(tmp.Name()) | ||
| } | ||
|
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| // 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) | ||
|
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| return tmp, teardown | ||
| } |
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