block_stream_test.go 4.21 KB
Newer Older
manish's avatar
manish committed
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
/*
Copyright IBM Corp. 2016 All Rights Reserved.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

		 http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

package fsblkstorage

import (
	"testing"

	"github.com/golang/protobuf/proto"
	"github.com/hyperledger/fabric/core/ledgernext/testutil"
)

func TestBlockfileStream(t *testing.T) {
	testBlockfileStream(t, 0)
	testBlockfileStream(t, 1)
	testBlockfileStream(t, 10)
}

func testBlockfileStream(t *testing.T, numBlocks int) {
	env := newTestEnv(t)
	defer env.Cleanup()
	w := newTestBlockfileWrapper(t, env)
	blockfileMgr := w.blockfileMgr

	blocks := testutil.ConstructTestBlocks(t, numBlocks)
	w.addBlocks(blocks)
	w.close()

	s, err := newBlockfileStream(deriveBlockfilePath(blockfileMgr.rootDir, 0), 0)
	defer s.close()
	testutil.AssertNoError(t, err, "Error in constructing blockfile stream")

	blockCount := 0
	for {
		blockBytes, err := s.nextBlockBytes()
		testutil.AssertNoError(t, err, "Error in getting next block")
		if blockBytes == nil {
			break
		}
		blockCount++
	}
	// After the stream has been exhausted, both blockBytes and err should be nil
	blockBytes, err := s.nextBlockBytes()
	testutil.AssertNil(t, blockBytes)
	testutil.AssertNoError(t, err, "Error in getting next block after exhausting the file")
	testutil.AssertEquals(t, blockCount, numBlocks)
}

func TestBlockFileStreamUnexpectedEOF(t *testing.T) {
	partialBlockBytes := []byte{}
	dummyBlockBytes := testutil.ConstructRandomBytes(t, 100)
	lenBytes := proto.EncodeVarint(uint64(len(dummyBlockBytes)))
	partialBlockBytes = append(partialBlockBytes, lenBytes...)
	partialBlockBytes = append(partialBlockBytes, dummyBlockBytes...)
	testBlockFileStreamUnexpectedEOF(t, 10, partialBlockBytes[:1])
	testBlockFileStreamUnexpectedEOF(t, 10, partialBlockBytes[:2])
	testBlockFileStreamUnexpectedEOF(t, 10, partialBlockBytes[:5])
	testBlockFileStreamUnexpectedEOF(t, 10, partialBlockBytes[:20])
}

func testBlockFileStreamUnexpectedEOF(t *testing.T, numBlocks int, partialBlockBytes []byte) {
	env := newTestEnv(t)
	defer env.Cleanup()
	w := newTestBlockfileWrapper(t, env)
	blockfileMgr := w.blockfileMgr
	blocks := testutil.ConstructTestBlocks(t, numBlocks)
	w.addBlocks(blocks)
	blockfileMgr.currentFileWriter.append(partialBlockBytes, true)
	w.close()
	s, err := newBlockfileStream(deriveBlockfilePath(blockfileMgr.rootDir, 0), 0)
	defer s.close()
	testutil.AssertNoError(t, err, "Error in constructing blockfile stream")

	for i := 0; i < numBlocks; i++ {
		blockBytes, err := s.nextBlockBytes()
		testutil.AssertNotNil(t, blockBytes)
		testutil.AssertNoError(t, err, "Error in getting next block")
	}
	blockBytes, err := s.nextBlockBytes()
	testutil.AssertNil(t, blockBytes)
	testutil.AssertSame(t, err, ErrUnexpectedEndOfBlockfile)
}

func TestBlockStream(t *testing.T) {
	testBlockStream(t, 1)
	testBlockStream(t, 2)
	testBlockStream(t, 10)
}

func testBlockStream(t *testing.T, numFiles int) {
	env := newTestEnv(t)
	defer env.Cleanup()
	w := newTestBlockfileWrapper(t, env)
	defer w.close()
	blockfileMgr := w.blockfileMgr

	numBlocksInEachFile := 10
	for i := 0; i < numFiles; i++ {
		blocks := testutil.ConstructTestBlocks(t, numBlocksInEachFile)
		w.addBlocks(blocks)
		blockfileMgr.moveToNextFile()
	}
	s, err := newBlockStream(blockfileMgr.rootDir, 0, 0, numFiles-1)
	defer s.close()
	testutil.AssertNoError(t, err, "Error in constructing new block stream")
	blockCount := 0
	for {
		blockBytes, err := s.nextBlockBytes()
		testutil.AssertNoError(t, err, "Error in getting next block")
		if blockBytes == nil {
			break
		}
		blockCount++
	}
	// After the stream has been exhausted, both blockBytes and err should be nil
	blockBytes, err := s.nextBlockBytes()
	testutil.AssertNil(t, blockBytes)
	testutil.AssertNoError(t, err, "Error in getting next block after exhausting the file")
	testutil.AssertEquals(t, blockCount, numFiles*numBlocksInEachFile)
}