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
|
package io.github.jshipit;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import java.io.*;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.ArrayList;
import java.util.List;
import java.util.UUID;
public class ContainerManager {
private String containerID;
private String containerName;
private String containerRepo;
private String containerImage;
private String containerTag;
private String containerApiRepo;
private String entryCommand;
private OCIDataStore dataStore;
public ContainerManager(String containerName, String containerImage, String containerTag, String entryCommand, String containerApiRepo, String containerRepo, OCIDataStore dataStore) {
this.containerName = containerName;
this.containerImage = containerImage;
this.containerTag = containerTag;
this.entryCommand = entryCommand;
this.containerApiRepo = containerApiRepo;
this.containerRepo = containerRepo;
this.dataStore = dataStore;
}
public void createContainer() {
System.out.println("Creating container");
if (!Files.isDirectory(Paths.get(dataStore.getPath() + "/" + this.containerImage + "/" + this.containerTag))) {
System.out.println("Image does not exist");
return;
}
if (this.containerID == null) {
this.containerID = genContainerID();
}
String containerDirectory = dataStore.createContainerDirectory(this.containerImage, this.containerTag, this.containerName, this.containerID);
System.out.println("Container directory: " + containerDirectory);
System.out.println("Container ID: " + this.containerID);
new File(containerDirectory + "/containerOverlay").mkdirs();
new File(containerDirectory + "/root").mkdirs();
}
public void startContainer() {
System.out.println("Starting container");
System.out.println("Container ID: " + this.containerID);
System.out.println("Container name: " + this.containerName);
System.out.println("Container image: " + this.containerImage);
System.out.println("Container tag: " + this.containerTag);
System.out.println("Container entry command: " + this.entryCommand);
System.out.println("Container data store: " + this.dataStore.getPath());
String containerDirectory = dataStore.getContainerPath(this.containerName, this.containerID);
System.out.println("Container directory: " + containerDirectory);
List<String> content = null;
try {
content = Files.readAllLines(Paths.get(this.dataStore.getPath() + "/" + this.containerImage + "/" + this.containerTag + "/layers"));
} catch (IOException e) {
throw new RuntimeException(e);
}
assert content != null;
List<String> layers = new ArrayList<>();
for (String line : content) {
layers.add(this.dataStore.getPath() + "/blobs/" + line.replace("sha256:", ""));
}
assert layers.size() > 0;
Mount mount = new Mount();
String[] diffs = layers.toArray(new String[0]);
mount.overlayMount(diffs, containerDirectory + "/containerOverlay", containerDirectory + "/root");
}
public String genContainerID() {
System.out.println("Generating container ID");
return UUID.randomUUID().toString();
}
}
|
