dsnapshot.exception source code

1 /**
2 Copyright: Copyright (c) 2019, Joakim Brännström. All rights reserved.
3 License: $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost Software License 1.0)
4 Author: Joakim Brännström (joakim.brannstrom@gmx.com)
5 */
6 module dsnapshot.exception;
7 
8 import logger = std.experimental.logger;
9 
10 import sumtype;
11 
12 @safe:
13 
14 class SnapshotException : Exception {
15     this(SnapshotError s) {
16         super(null);
17         this.errMsg = s;
18     }
19 
20     SnapshotError errMsg;
21 
22     static struct DstIsNotADir {
23         void print() {
24             logger.error("Destination must be a directory");
25         }
26     }
27 
28     static struct UnableToAcquireWorkLock {
29         string dst;
30         void print() {
31             logger.errorf("'%s' is locked by another dsnapshot instance", dst);
32         }
33     }
34 
35     static struct SyncFailed {
36         string src;
37         string dst;
38         void print() {
39             logger.errorf("Failed to sync '%s' to '%s'", src, dst);
40         }
41     }
42 
43     static struct RestoreFailed {
44         string src;
45         string dst;
46         void print() {
47             logger.errorf("Failed to restore '%s' to '%s'", src, dst);
48         }
49     }
50 
51     static struct PreExecFailed {
52         void print() {
53             logger.error("One or more of the `pre_exec` hooks failed");
54         }
55     }
56 
57     static struct PostExecFailed {
58         void print() {
59             logger.error("One or more of the `post_exec` hooks failed");
60         }
61     }
62 }
63 
64 alias SnapshotError = SumType!(SnapshotException.DstIsNotADir,
65         SnapshotException.UnableToAcquireWorkLock, SnapshotException.SyncFailed,
66         SnapshotException.PreExecFailed, SnapshotException.PostExecFailed,
67         SnapshotException.RestoreFailed);