Coverage Summary for Class: BootstrapDataProvider (co.rsk.db.importer.provider)
Class |
Class, %
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Method, %
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Line, %
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BootstrapDataProvider |
0%
(0/1)
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0%
(0/6)
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0%
(0/23)
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1 /*
2 * This file is part of RskJ
3 * Copyright (C) 2019 RSK Labs Ltd.
4 *
5 * This program is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU Lesser General Public License as published by
7 * the Free Software Foundation, either version 3 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General Public License
16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
17 */
18
19 package co.rsk.db.importer.provider;
20
21 import co.rsk.db.importer.BootstrapImportException;
22 import co.rsk.db.importer.provider.index.BootstrapIndexCandidateSelector;
23 import co.rsk.db.importer.provider.index.BootstrapIndexRetriever;
24 import co.rsk.db.importer.provider.index.data.BootstrapDataEntry;
25 import co.rsk.db.importer.provider.index.data.BootstrapDataIndex;
26
27 import java.util.List;
28 import java.util.Map;
29
30 public class BootstrapDataProvider {
31
32 private final BootstrapIndexCandidateSelector bootstrapIndexCandidateSelector;
33 private final BootstrapDataVerifier bootstrapDataVerifier;
34 private final BootstrapFileHandler bootstrapFileHandler;
35 private BootstrapIndexRetriever bootstrapIndexRetriever;
36 private int minimumRequiredVerifications;
37 private long height;
38
39 public BootstrapDataProvider(
40 BootstrapDataVerifier bootstrapDataVerifier,
41 BootstrapFileHandler bootstrapFileHandler,
42 BootstrapIndexCandidateSelector bootstrapIndexCandidateSelector,
43 BootstrapIndexRetriever bootstrapIndexRetriever,
44 int minimumRequiredVerifications) {
45
46 this.bootstrapIndexCandidateSelector = bootstrapIndexCandidateSelector;
47 this.bootstrapDataVerifier = bootstrapDataVerifier;
48 this.bootstrapFileHandler = bootstrapFileHandler;
49 this.bootstrapIndexRetriever = bootstrapIndexRetriever;
50 this.minimumRequiredVerifications = minimumRequiredVerifications;
51 }
52
53 public void retrieveData() {
54 BootstrapIndexCandidateSelector.HeightCandidate heightCandidate =
55 bootstrapIndexCandidateSelector.getHeightData(getIndices());
56
57 Map<String, BootstrapDataEntry> selectedEntries = heightCandidate.getEntries();
58 verify(heightCandidate);
59 height = heightCandidate.getHeight();
60
61 bootstrapFileHandler.setTempDirectory();
62 bootstrapFileHandler.retrieveAndUnpack(selectedEntries);
63 }
64
65 private void verify(BootstrapIndexCandidateSelector.HeightCandidate mchd) {
66 Map<String, BootstrapDataEntry> selectedEntries = mchd.getEntries();
67 int verifications = bootstrapDataVerifier.verifyEntries(selectedEntries);
68 if (verifications < minimumRequiredVerifications) {
69 throw new BootstrapImportException(String.format(
70 "Not enough valid signatures: selected height %d doesn't have enough trustworthy sources: %d of %d",
71 mchd.getHeight(),
72 verifications,
73 minimumRequiredVerifications
74 ));
75 }
76 }
77
78 private List<BootstrapDataIndex> getIndices() {
79 return bootstrapIndexRetriever.retrieve();
80 }
81
82 public byte[] getBootstrapData() {
83 return bootstrapFileHandler.getBootstrapData();
84 }
85
86 public long getSelectedHeight() {
87 return height;
88 }
89 }