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
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
|
package io.github.jshipit;
import com.fasterxml.jackson.databind.JsonNode;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.nio.file.FileAlreadyExistsException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.sql.*;
import java.util.ArrayList;
import java.util.List;
public class OCIDataStore {
private String path;
private String databasePath;
public OCIDataStore(String path) {
this.path = path;
this.databasePath = path + "/datastore.db";
if (!Files.isDirectory(Path.of(path))) {
createStore();
}
if (!Files.exists(Path.of(this.databasePath))) {
try {
createStoreDatabase();
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException e) {
throw new RuntimeException(e);
}
}
}
private void createStore() {
System.out.println("Creating OCI Data Store");
Path path = Path.of(this.path);
try {
Files.createDirectory(path);
} catch (IOException e) {
if (!(e instanceof FileAlreadyExistsException)) {
System.out.println("Failed to create directory: " + path);
e.printStackTrace();
}
}
}
private void createStoreDatabase() throws ClassNotFoundException, InstantiationException, IllegalAccessException {
String url = "jdbc:sqlite:" + this.databasePath;
try (Connection conn = DriverManager.getConnection(url)) {
if (conn != null) {
DatabaseMetaData meta = conn.getMetaData();
Statement statement = conn.createStatement();
statement.setQueryTimeout(30); // set timeout to 30 sec.
statement.executeUpdate("CREATE TABLE IF NOT EXISTS blobs (id INTEGER PRIMARY KEY AUTOINCREMENT, digest TEXT, path TEXT)");
statement.executeUpdate("CREATE TABLE IF NOT EXISTS containers (containerID INTEGER PRIMARY KEY AUTOINCREMENT, name TEXT, id TEXT, path TEXT)");
System.out.println("A new database has been created.");
}
} catch (SQLException e) {
System.out.println(e.getMessage());
}
}
public void addBlobToDatabase(String blob) {
String url = "jdbc:sqlite:" + this.databasePath;
try (Connection conn = DriverManager.getConnection(url)) {
if (conn != null) {
Statement statement = conn.createStatement();
statement.setQueryTimeout(30); // set timeout to 30 sec.
statement.executeUpdate("INSERT INTO blobs (digest, path) VALUES ('" + blob + "', '" + this.path + "/blobs/" + blob + "')");
}
} catch (SQLException e) {
System.out.println(e.getMessage());
}
}
public boolean isBlobInDatabase(String blob) {
String url = "jdbc:sqlite:" + this.databasePath;
try (Connection conn = DriverManager.getConnection(url)) {
if (conn != null) {
Statement statement = conn.createStatement();
statement.setQueryTimeout(30); // set timeout to 30 sec.
ResultSet rs = statement.executeQuery("SELECT * FROM blobs WHERE digest = '" + blob + "'");
return rs.next();
}
} catch (SQLException e) {
System.out.println(e.getMessage());
}
return false;
}
public void addContainerToDatabase(String path, String name, String id) {
String url = "jdbc:sqlite:" + this.databasePath;
try (Connection conn = DriverManager.getConnection(url)) {
if (conn != null) {
Statement statement = conn.createStatement();
statement.setQueryTimeout(30); // set timeout to 30 sec.
statement.executeUpdate("INSERT INTO containers (name, id, path) VALUES ('" + name + "', '" + id + "', '" + path + "')");
}
} catch (SQLException e) {
System.out.println(e.getMessage());
}
}
public String getContainerPath(String name, String id) {
String url = "jdbc:sqlite:" + this.databasePath;
try (Connection conn = DriverManager.getConnection(url)) {
if (conn != null) {
Statement statement = conn.createStatement();
statement.setQueryTimeout(30); // set timeout to 30 sec.
ResultSet rs = statement.executeQuery("SELECT * FROM containers WHERE name = '" + name + "' AND id = '" + id + "'");
return rs.getString("path");
}
} catch (SQLException e) {
System.out.println(e.getMessage());
}
return null;
}
public String createContainerDirectory(String image, String tag, String name, String id) {
Path containerPath = Path.of(this.path+"/"+image+"/"+tag+"/"+name+"_"+id);
try {
Files.createDirectory(containerPath);
} catch (IOException e) {
System.out.println("Failed to create directory: " + containerPath);
e.printStackTrace();
return null;
}
addContainerToDatabase(containerPath.toString(), name, id);
return containerPath.toString();
}
public void createImage(String apiRepo, String repo, String image, String tag) {
Path imgPath = Path.of(this.path+"/"+image);
try {
Files.createDirectory(imgPath);
} catch (IOException e) {
System.out.println("Failed to create directory: " + imgPath);
}
Path tagPath = Path.of(this.path+"/"+image+"/"+tag);
try {
Files.createDirectory(tagPath);
} catch (IOException e) {
System.out.println("Failed to create directory: " + tagPath);
e.printStackTrace();
return;
}
DockerAPIHelper api = new DockerAPIHelper(apiRepo, repo, image, tag);
JsonNode manifest = null;
try {
manifest = api.fetchManifestJson();
} catch (IOException ignored) {} // Proper error handling is bloat
Path path = Path.of(this.path+"/"+api.getImage()+"/"+api.getTag());
try {
Files.createDirectory(path);
} catch (IOException e) {
if (!(e instanceof FileAlreadyExistsException)) {
System.out.println("Failed to create directory: " + path);
e.printStackTrace();
return;
}
}
assert manifest != null;
JsonNode layers = manifest.get("layers");
String layerpath = this.path+"/blobs";
try {
Files.createDirectory(Path.of(layerpath));
} catch (IOException e) {
if (!(e instanceof FileAlreadyExistsException)) {
System.out.println("Failed to create directory: " + layerpath);
e.printStackTrace();
return;
}
}
List <String> layerDigests = new ArrayList<>();
for (JsonNode layer : layers) {
try {
if (!isBlobInDatabase(layer.get("digest").asText())) {
api.fetchBlob(layer.get("digest").asText(), layerpath, true, null);
addBlobToDatabase(layer.get("digest").asText());
layerDigests.add(layer.get("digest").asText());
} else {
System.out.println("Blob already in database: " + layer.get("digest").asText());
}
} catch (IOException e) {
e.printStackTrace();
}
}
try {
Files.write(Path.of(this.path+"/"+image+"/"+tag+"/layers"), layerDigests);
} catch (IOException e) {
e.printStackTrace();
}
try {
api.fetchBlob(manifest.get("config").get("digest").asText(), this.path+"/"+image+"/"+tag, false, this.path+"/"+image+"/"+tag+"/config");
} catch (IOException e) {
e.printStackTrace();
}
}
public String getPath() {
return path;
}
public void setPath(String path) {
this.path = path;
}
public String getDatabasePath() {
return databasePath;
}
public void setDatabasePath(String databasePath) {
this.databasePath = databasePath;
}
}
|
