myko 6.5.11

myko in rust
Documentation 
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
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289

//! Phase-1 acceptance-criteria tests for
//! docs/superpowers/specs/2026-07-13-advanced-query-design.md (criteria
//! 2-4; criterion 1's unit coverage lives in filter.rs's own test module,
//! criterion 5 needs the TS codegen pipeline, criterion 6 is a separate
//! `cargo check --target wasm32-unknown-unknown` run, criterion 7 is phase
//! 2 / out of scope here).

#![cfg(feature = "bench")]

use std::sync::Arc;

use myko::{
    bench_entities::{
        BenchCompoundChild, BenchCompoundChildQuery, BenchParentAId, BenchParentBId,
        GetBenchCompoundChildsByQuery,
    },
    entities::{
        client::{Client, ClientQuery, GetClientsByQuery},
        server::ServerId,
    },
    query::{IdFilter, query_runtime_metrics_by_id},
    server::{HandlerRegistry, MykoServerContext, RelationshipManager, persister::PersisterRouter},
    store::StoreRegistry,
    wire::{MEvent, MEventType},
};
use uuid::Uuid;

/// hyphae's scheduler tick queue is process-wide — serialize against other
/// tests in this binary the same way `query_cache_leak_test.rs` does.
fn scheduler_test_serial() -> std::sync::MutexGuard<'static, ()> {
    static LOCK: std::sync::Mutex<()> = std::sync::Mutex::new(());
    LOCK.lock()
        .unwrap_or_else(std::sync::PoisonError::into_inner)
}

fn make_ctx() -> MykoServerContext {
    MykoServerContext::new(
        Uuid::new_v4(),
        Arc::new(StoreRegistry::new()),
        Arc::new(HandlerRegistry::new()),
        Arc::new(RelationshipManager::new()),
        Arc::new(PersisterRouter::default()),
        Arc::new(myko::search::SearchIndex::new()),
        myko::server::MykoServerRuntime {
            peer_clients: Arc::new(dashmap::DashMap::new()),
            event_sink: None,
            history_replay: None,
        },
    )
}

fn insert_client(ctx: &MykoServerContext, id: &str, server_id: &str) {
    let client = Client {
        id: id.into(),
        server_id: ServerId::from(Arc::<str>::from(server_id)),
        address: None,
        windback: None,
    };
    let event = MEvent::from_item(&client, MEventType::SET, &format!("tx-{id}"));
    assert!(ctx.apply_event_batch(vec![event]).is_ok());
}

fn insert_compound_child(
    ctx: &MykoServerContext,
    id: &str,
    parent_a: &str,
    parent_b: &str,
    value: i64,
) {
    let child = BenchCompoundChild {
        id: id.into(),
        parent_a_id: BenchParentAId::from(Arc::<str>::from(parent_a)),
        parent_b_id: BenchParentBId::from(Arc::<str>::from(parent_b)),
        value,
    };
    let event = MEvent::from_item(&child, MEventType::SET, &format!("tx-{id}"));
    assert!(ctx.apply_event_batch(vec![event]).is_ok());
}

fn request(ctx: &MykoServerContext, tx: &str) -> Arc<myko::request::RequestContext> {
    Arc::new(myko::request::RequestContext::from_client(
        Arc::from(tx),
        Arc::from("client-1"),
        ctx.host_id,
    ))
}

// ─────────────────────────────────────────────────────────────────────────
// Acceptance criterion 2: routing, including a 2-belongs_to compound case.
// ─────────────────────────────────────────────────────────────────────────

#[test]
fn compound_two_belongs_to_in_filter_returns_exact_union() {
    let _serial = scheduler_test_serial();
    let ctx = make_ctx();
    // Cartesian product of parent_a_id In(A1,A2) x parent_b_id In(B1,B2)
    // is 4 compound keys; only children matching one of those 4 exact
    // (parent_a, parent_b) pairs should appear.
    insert_compound_child(&ctx, "c1", "A1", "B1", 1); // matches
    insert_compound_child(&ctx, "c2", "A2", "B2", 2); // matches
    insert_compound_child(&ctx, "c3", "A1", "B3", 3); // parent_b not in set
    insert_compound_child(&ctx, "c4", "A3", "B1", 4); // parent_a not in set

    let filter = BenchCompoundChildQuery {
        parent_a_id: Some(IdFilter::In(vec![
            BenchParentAId::from(Arc::<str>::from("A1")),
            BenchParentAId::from(Arc::<str>::from("A2")),
        ])),
        parent_b_id: Some(IdFilter::In(vec![
            BenchParentBId::from(Arc::<str>::from("B1")),
            BenchParentBId::from(Arc::<str>::from("B2")),
        ])),
        ..Default::default()
    };
    let cell = ctx.query_map(GetBenchCompoundChildsByQuery(filter), request(&ctx, "tx-1"));
    assert_eq!(
        cell.snapshot().len(),
        2,
        "must return exactly c1 and c2 — the only items matching one of the 4 compound keys"
    );
}

#[test]
fn writes_to_non_matching_belongs_to_buckets_do_not_change_the_result() {
    let _serial = scheduler_test_serial();
    let ctx = make_ctx();
    insert_client(&ctx, "c1", "server-A");

    let filter = ClientQuery {
        server_id: Some(IdFilter::In(vec![ServerId::from(Arc::<str>::from(
            "server-A",
        ))])),
        ..Default::default()
    };
    let cell = ctx.query_map(GetClientsByQuery(filter), request(&ctx, "tx-1"));
    assert_eq!(cell.snapshot().len(), 1);

    // Writes to servers outside the In set must not appear — the union
    // only ever subscribes to the buckets it was given, so these writes
    // never reach it structurally, not just "produce no visible change".
    for i in 0..10 {
        insert_client(&ctx, &format!("other-{i}"), &format!("server-{i}"));
    }
    assert_eq!(
        cell.snapshot().len(),
        1,
        "10 writes to non-matching server buckets must not affect the result"
    );
}

// ─────────────────────────────────────────────────────────────────────────
// Acceptance criterion 3: reactive tick on mutate-into and mutate-out.
// ─────────────────────────────────────────────────────────────────────────

#[test]
fn item_moving_out_of_the_in_set_disappears() {
    let _serial = scheduler_test_serial();
    let ctx = make_ctx();
    insert_client(&ctx, "c1", "server-A");

    let filter = ClientQuery {
        server_id: Some(IdFilter::In(vec![ServerId::from(Arc::<str>::from(
            "server-A",
        ))])),
        ..Default::default()
    };
    let cell = ctx.query_map(GetClientsByQuery(filter), request(&ctx, "tx-1"));
    assert_eq!(cell.snapshot().len(), 1);

    // Re-SET the same client id under a server OUTSIDE the In set — an fk
    // mutation, not an insert. Must disappear from the result.
    insert_client(&ctx, "c1", "server-Z");
    assert_eq!(
        cell.snapshot().len(),
        0,
        "an item whose fk mutates OUT of the In set must be removed from the result"
    );
}

#[test]
fn item_moving_into_the_in_set_appears() {
    let _serial = scheduler_test_serial();
    let ctx = make_ctx();
    insert_client(&ctx, "c1", "server-Z"); // starts outside the In set

    let filter = ClientQuery {
        server_id: Some(IdFilter::In(vec![ServerId::from(Arc::<str>::from(
            "server-A",
        ))])),
        ..Default::default()
    };
    let cell = ctx.query_map(GetClientsByQuery(filter), request(&ctx, "tx-1"));
    assert_eq!(cell.snapshot().len(), 0);

    // Re-SET the same client id under a server INSIDE the In set.
    insert_client(&ctx, "c1", "server-A");
    assert_eq!(
        cell.snapshot().len(),
        1,
        "an item whose fk mutates INTO the In set must appear in the result"
    );
}

// ─────────────────────────────────────────────────────────────────────────
// Acceptance criterion 4: cache sharing for equivalent advanced queries.
// ─────────────────────────────────────────────────────────────────────────

#[test]
fn permuted_in_filters_share_one_query_cell() {
    let _serial = scheduler_test_serial();
    let ctx = make_ctx();
    insert_client(&ctx, "c1", "server-A");
    insert_client(&ctx, "c2", "server-B");

    let before = query_runtime_metrics_by_id(usize::MAX)
        .into_iter()
        .find(|m| m.query_id.as_ref() == "GetClientsByQuery")
        .map_or(0, |m| m.cell_factories_created);

    // Two DIFFERENT call sites, same logical filter, permuted + duplicated
    // In array — must canonicalize to the SAME cache key.
    let filter_a = ClientQuery {
        server_id: Some(IdFilter::In(vec![
            ServerId::from(Arc::<str>::from("server-A")),
            ServerId::from(Arc::<str>::from("server-B")),
        ])),
        ..Default::default()
    };
    let filter_b = ClientQuery {
        server_id: Some(IdFilter::In(vec![
            ServerId::from(Arc::<str>::from("server-B")),
            ServerId::from(Arc::<str>::from("server-A")),
            ServerId::from(Arc::<str>::from("server-B")),
        ])),
        ..Default::default()
    };

    let cell_a = ctx.query_map(GetClientsByQuery(filter_a), request(&ctx, "tx-a"));
    let cell_b = ctx.query_map(GetClientsByQuery(filter_b), request(&ctx, "tx-b"));
    assert_eq!(cell_a.snapshot().len(), 2);
    assert_eq!(cell_b.snapshot().len(), 2);

    let after = query_runtime_metrics_by_id(usize::MAX)
        .into_iter()
        .find(|m| m.query_id.as_ref() == "GetClientsByQuery")
        .map_or(0, |m| m.cell_factories_created);

    assert_eq!(
        after.saturating_sub(before),
        1,
        "two equivalent (canonicalization-wise) advanced queries from different call sites \
         must share one query cell — exactly one cell_factory invocation, not two"
    );
}

#[test]
fn distinct_filters_do_not_share_a_query_cell() {
    let _serial = scheduler_test_serial();
    let ctx = make_ctx();
    insert_client(&ctx, "c1", "server-A");
    insert_client(&ctx, "c2", "server-B");

    let before = query_runtime_metrics_by_id(usize::MAX)
        .into_iter()
        .find(|m| m.query_id.as_ref() == "GetClientsByQuery")
        .map_or(0, |m| m.cell_factories_created);

    let filter_a = ClientQuery {
        server_id: Some(IdFilter::Eq(ServerId::from(Arc::<str>::from("server-A")))),
        ..Default::default()
    };
    let filter_c = ClientQuery {
        server_id: Some(IdFilter::Eq(ServerId::from(Arc::<str>::from("server-C")))),
        ..Default::default()
    };
    let _cell_a = ctx.query_map(GetClientsByQuery(filter_a), request(&ctx, "tx-a"));
    let _cell_c = ctx.query_map(GetClientsByQuery(filter_c), request(&ctx, "tx-c"));

    let after = query_runtime_metrics_by_id(usize::MAX)
        .into_iter()
        .find(|m| m.query_id.as_ref() == "GetClientsByQuery")
        .map_or(0, |m| m.cell_factories_created);

    assert_eq!(
        after.saturating_sub(before),
        2,
        "genuinely distinct filters must NOT collapse onto one cache entry"
    );
}