Transpiled version (16217L) is out of date.
1 | sclass ConceptsShadowLogger implements AutoCloseable {
|
2 | // concepts we are logging |
3 | Concepts cc; |
4 | int delay = 500; // how long to wait before writing changes (ms) |
5 | bool verbose; |
6 | |
7 | // all the shadows, sorted by ID |
8 | L<ConceptShadow> shadows; |
9 | |
10 | // IDs of concepts that have changed (fullChange = all changed) |
11 | new HashSet<Long> changedIDs; |
12 | bool fullChange; |
13 | |
14 | // where to send the shadow log (optional) |
15 | PrintWriter writer; |
16 | |
17 | // our internal lock & queue |
18 | Lock lock = lock(); |
19 | transient Q q = startQ("ConceptsShadowLogger");
|
20 | |
21 | IVF1<ConceptsChange> changeHandler = change -> {
|
22 | lock lock; |
23 | if (change cast ConceptChange) |
24 | changedIDs.add(change.c.id); |
25 | else if (change cast ConceptCreate) |
26 | changedIDs.add(change.c.id); |
27 | else if (change cast ConceptDelete) |
28 | changedIDs.add(change.id); |
29 | else if (change cast FullChange) |
30 | fullChange = true; |
31 | }; |
32 | |
33 | *() {}
|
34 | *(Concepts *cc) {}
|
35 | |
36 | void install {
|
37 | makeShadows(); |
38 | cc.onChange(changeHandler); |
39 | //cc.addPreSave(); |
40 | } |
41 | |
42 | void uninstall {
|
43 | cc.removeChangeListener(changeHandler); |
44 | } |
45 | |
46 | void makeShadows {
|
47 | shadows = allConceptShadows(cc); |
48 | } |
49 | |
50 | void flush {
|
51 | q.add(r flush_impl); |
52 | } |
53 | |
54 | void flush_impl {
|
55 | sleep(delay); |
56 | |
57 | Set<Long> changedIDs; |
58 | {
|
59 | lock lock; |
60 | if (fullChange) {
|
61 | changedIDs = allConceptIDs(cc); |
62 | fullChange = false; |
63 | } else {
|
64 | changedIDs = this.changedIDs; |
65 | this.changedIDs = new HashSet; |
66 | } |
67 | } |
68 | |
69 | // make new shadows (id, shadow) - shadow will be null when object was deleted |
70 | LPair<Long, ConceptShadow> newShadows = map(sorted(changedIDs), |
71 | id -> pair(id, conceptShadow(cc.getConcept(id)))); |
72 | new L<CreatedDeletedChanged<ConceptShadow>> diffs; |
73 | new L<ConceptShadow> updatedShadows; |
74 | |
75 | int i1 = 0, i2 = 0; |
76 | LPair<Long, ConceptShadow> l1 = newShadows; |
77 | L<ConceptShadow> l2 = shadows; |
78 | while (i1 < l(l1) && i2 < l(l2)) {
|
79 | long id1, ConceptShadow s1 = unpair newShadows.get(i1); |
80 | ConceptShadow s2 = shadows.get(i2); |
81 | long id2 = s2.id(); |
82 | if (id1 < id2) {
|
83 | diffs.add(new CreatedDeletedChanged.Created(s1)); |
84 | updatedShadows.add(s1); |
85 | ++i1; |
86 | } else if (id1 > id2) {
|
87 | updatedShadows.add(s2); |
88 | ++i2; |
89 | } else {
|
90 | if (s1 == null) |
91 | diffs.add(new CreatedDeletedChanged.Deleted(s2)); |
92 | else {
|
93 | if (eq(s1, s2)) |
94 | print("Unchanged concept: " + id1);
|
95 | else |
96 | diffs.add(new CreatedDeletedChanged.Changed(s2, s1)); |
97 | updatedShadows.add(s1); |
98 | } |
99 | ++i1; |
100 | ++i2; |
101 | } |
102 | } |
103 | |
104 | while (i1 < l(l1)) {
|
105 | long id, ConceptShadow s = unpair l1.get(i1++); |
106 | if (s != null) {
|
107 | diffs.add(new CreatedDeletedChanged.Created(s)); |
108 | updatedShadows.add(s); |
109 | } else |
110 | print("Concept already gone again: " + id);
|
111 | } |
112 | updatedShadows.addAll(subList(l2, i2)); |
113 | |
114 | shadows = updatedShadows; |
115 | |
116 | if (verbose) |
117 | pnl("SHADOW DIFF", diffs);
|
118 | |
119 | if (writer != null && nempty(diffs)) {
|
120 | writer.println(structure(diffs)); |
121 | writer.flush(); |
122 | } |
123 | } |
124 | |
125 | public void close {
|
126 | runInQAndWait(q, r { dispose writer });
|
127 | } |
128 | } |
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| Snippet ID: | #1031072 |
| Snippet name: | ConceptsShadowLogger [dev.] |
| Eternal ID of this version: | #1031072/25 |
| Text MD5: | 14499b6b0b22403ccb2b7868752b0723 |
| Author: | stefan |
| Category: | javax |
| Type: | JavaX fragment (include) |
| Public (visible to everyone): | Yes |
| Archived (hidden from active list): | No |
| Created/modified: | 2021-06-22 01:08:12 |
| Source code size: | 3365 bytes / 128 lines |
| Pitched / IR pitched: | No / No |
| Views / Downloads: | 230 / 599 |
| Version history: | 24 change(s) |
| Referenced in: | [show references] |