blob: 8daac029c7b50cae5b2445d809e579093733f0d9 (
plain) (
blame)
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
|
// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.hosted.provision.applications;
import com.yahoo.config.provision.ApplicationId;
import com.yahoo.config.provision.ApplicationLockException;
import com.yahoo.config.provision.ApplicationTransaction;
import com.yahoo.transaction.Mutex;
import com.yahoo.transaction.NestedTransaction;
import com.yahoo.vespa.hosted.provision.persistence.CuratorDb;
import java.time.Duration;
import java.util.List;
import java.util.Optional;
/**
* An (in-memory, for now) repository of the node repo's view of applications.
*
* This is multithread safe.
*
* @author bratseth
*/
public class Applications {
private final CuratorDb db;
public Applications(CuratorDb db) {
this.db = db;
// read and write all to make sure they are stored in the latest version of the serialized format
for (ApplicationId id : ids()) {
try (Mutex lock = db.lock(id)) {
get(id).ifPresent(application -> put(application, lock));
} catch (ApplicationLockException e) {
throw new ApplicationLockException(e);
}
}
}
/** Returns the ids of all applications */
public List<ApplicationId> ids() { return db.readApplicationIds(); }
/** Returns the application with the given id, or empty if it does not exist */
public Optional<Application> get(ApplicationId id) {
return db.readApplication(id);
}
/** Returns the application with the given id, or throws IllegalArgumentException if it does not exist */
public Application require(ApplicationId id) {
return db.readApplication(id).orElseThrow(() -> new IllegalArgumentException("No application '" + id + "' was found"));
}
// TODO: Require ProvisionLock instead of Mutex
public void put(Application application, Mutex applicationLock) {
NestedTransaction transaction = new NestedTransaction();
db.writeApplication(application, transaction);
transaction.commit();
}
public void put(Application application, ApplicationTransaction transaction) {
db.writeApplication(application, transaction.nested());
}
public void remove(ApplicationTransaction transaction) {
db.deleteApplication(transaction);
}
/** Create a lock which provides exclusive rights to making changes to the given application */
public Mutex lock(ApplicationId application) {
return db.lock(application);
}
/** Create a lock with a timeout which provides exclusive rights to making changes to the given application */
public Mutex lock(ApplicationId application, Duration timeout) {
return db.lock(application, timeout);
}
/** Create a lock which provides exclusive rights to perform a maintenance deployment */
public Mutex lockMaintenance(ApplicationId application) {
return db.lockMaintenance(application);
}
}
|