veilid/veilid-flutter/example/integration_test/test_dht.dart

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import 'dart:async';
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import 'dart:convert';
import 'package:flutter_test/flutter_test.dart';
import 'package:veilid/veilid.dart';
final bogusKey =
TypedKey.fromString("VLD0:qD10lHHPD1_Qr23_Qy-1JnxTht12eaWwENVG_m2v7II");
Future<void> testGetDHTValueUnopened() async {
final rc = await Veilid.instance.routingContext();
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try {
await expectLater(
() async => await rc.getDHTValue(bogusKey, 0, forceRefresh: false),
throwsA(isA<VeilidAPIException>()));
} finally {
rc.close();
}
}
Future<void> testOpenDHTRecordNonexistentNoWriter() async {
final rc = await Veilid.instance.routingContext();
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try {
await expectLater(() async => await rc.openDHTRecord(bogusKey),
throwsA(isA<VeilidAPIException>()));
} finally {
rc.close();
}
}
Future<void> testCloseDHTRecordNonexistent() async {
final rc = await Veilid.instance.routingContext();
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try {
await expectLater(() async => await rc.closeDHTRecord(bogusKey),
throwsA(isA<VeilidAPIException>()));
} finally {
rc.close();
}
}
Future<void> testDeleteDHTRecordNonexistent() async {
final rc = await Veilid.instance.routingContext();
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try {
await expectLater(() async => await rc.deleteDHTRecord(bogusKey),
throwsA(isA<VeilidAPIException>()));
} finally {
rc.close();
}
}
Future<void> testCreateDeleteDHTRecordSimple() async {
final rc = await Veilid.instance.routingContext();
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try {
final rec = await rc.createDHTRecord(const DHTSchema.dflt(oCnt: 1));
await rc.closeDHTRecord(rec.key);
await rc.deleteDHTRecord(rec.key);
} finally {
rc.close();
}
}
Future<void> testCreateDeleteDHTRecordNoClose() async {
final rc = await Veilid.instance.routingContext();
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try {
final rec = await rc.createDHTRecord(const DHTSchema.dflt(oCnt: 1));
await rc.deleteDHTRecord(rec.key);
} finally {
rc.close();
}
}
Future<void> testGetDHTValueNonexistent() async {
final rc = await Veilid.instance.routingContext();
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try {
final rec = await rc.createDHTRecord(const DHTSchema.dflt(oCnt: 1));
expect(await rc.getDHTValue(rec.key, 0), isNull);
await rc.deleteDHTRecord(rec.key);
} finally {
rc.close();
}
}
Future<void> testSetGetDHTValue() async {
final rc = await Veilid.instance.routingContext();
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try {
final rec = await rc.createDHTRecord(const DHTSchema.dflt(oCnt: 2));
expect(await rc.setDHTValue(rec.key, 0, utf8.encode("BLAH BLAH BLAH")),
isNull);
final vd2 = await rc.getDHTValue(rec.key, 0);
expect(vd2, isNotNull);
final vd3 = await rc.getDHTValue(rec.key, 0, forceRefresh: true);
expect(vd3, isNotNull);
final vd4 = await rc.getDHTValue(rec.key, 1);
expect(vd4, isNull);
expect(vd2, equals(vd3));
await rc.deleteDHTRecord(rec.key);
} finally {
rc.close();
}
}
Future<void> testOpenWriterDHTValue() async {
final rc = await Veilid.instance.routingContext();
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try {
var rec = await rc.createDHTRecord(const DHTSchema.dflt(oCnt: 2));
final key = rec.key;
final owner = rec.owner;
final secret = rec.ownerSecret!;
final cs = await Veilid.instance.getCryptoSystem(rec.key.kind);
expect(await cs.validateKeyPair(owner, secret), isTrue);
final otherKeyPair = await cs.generateKeyPair();
final va = utf8.encode("Qwertyuiop Asdfghjkl Zxcvbnm");
final vb = utf8.encode("1234567890");
final vc = utf8.encode("!@#\$%^&*()");
// Test subkey writes
expect(await rc.setDHTValue(key, 1, va), isNull);
var vdtemp = await rc.getDHTValue(key, 1);
expect(vdtemp, isNotNull);
expect(vdtemp!.data, equals(va));
expect(vdtemp.seq, equals(0));
expect(vdtemp.writer, equals(owner));
expect(await rc.getDHTValue(key, 0), isNull);
expect(await rc.setDHTValue(key, 0, vb), isNull);
expect(
await rc.getDHTValue(key, 0, forceRefresh: true),
equals(ValueData(
data: vb,
seq: 0,
writer: owner,
)));
expect(
await rc.getDHTValue(key, 1, forceRefresh: true),
equals(ValueData(
data: va,
seq: 0,
writer: owner,
)));
// Equal value should not trigger sequence number update
expect(await rc.setDHTValue(key, 1, va), isNull);
// Different value should trigger sequence number update
expect(await rc.setDHTValue(key, 1, vb), isNull);
// Now that we initialized some subkeys
// and verified they stored correctly
// Delete things locally and reopen and see if we can write
// with the same writer key
//
await rc.closeDHTRecord(key);
await rc.deleteDHTRecord(key);
rec = await rc.openDHTRecord(key,
writer: KeyPair(key: owner, secret: secret));
expect(rec, isNotNull);
expect(rec.key, equals(key));
expect(rec.owner, equals(owner));
expect(rec.ownerSecret, equals(secret));
expect(rec.schema, isA<DHTSchemaDFLT>());
expect(rec.schema.oCnt, equals(2));
// Verify subkey 1 can be set before it is get but newer is available online
vdtemp = await rc.setDHTValue(key, 1, vc);
expect(vdtemp, isNotNull);
expect(vdtemp!.data, equals(vb));
expect(vdtemp.seq, equals(1));
expect(vdtemp.writer, equals(owner));
// Verify subkey 1 can be set a second time and it updates because seq is newer
expect(await rc.setDHTValue(key, 1, vc), isNull);
// Verify the network got the subkey update with a refresh check
vdtemp = await rc.getDHTValue(key, 1, forceRefresh: true);
expect(vdtemp, isNotNull);
expect(vdtemp!.data, equals(vc));
expect(vdtemp.seq, equals(2));
expect(vdtemp.writer, equals(owner));
// Delete things locally and reopen and see if we can write
// with a different writer key (should fail)
await rc.closeDHTRecord(key);
await rc.deleteDHTRecord(key);
rec = await rc.openDHTRecord(key, writer: otherKeyPair);
expect(rec, isNotNull);
expect(rec.key, equals(key));
expect(rec.owner, equals(owner));
expect(rec.ownerSecret, isNull);
expect(rec.schema, isA<DHTSchemaDFLT>());
expect(rec.schema.oCnt, equals(2));
// Verify subkey 1 can NOT be set because we have the wrong writer
await expectLater(() async => await rc.setDHTValue(key, 1, va),
throwsA(isA<VeilidAPIException>()));
// Verify subkey 0 can NOT be set because we have the wrong writer
await expectLater(() async => await rc.setDHTValue(key, 0, va),
throwsA(isA<VeilidAPIException>()));
// Verify subkey 0 can be set because override with the right writer
expect(
await rc.setDHTValue(key, 0, va,
writer: KeyPair(key: owner, secret: secret)),
isNull);
// Clean up
await rc.closeDHTRecord(key);
await rc.deleteDHTRecord(key);
} finally {
rc.close();
}
}
Future<void> testWatchDHTValues(Stream<VeilidUpdate> updateStream) async {
final valueChangeQueue =
StreamController<VeilidUpdateValueChange>.broadcast();
final valueChangeSubscription = updateStream.listen((update) {
if (update is VeilidUpdateValueChange) {
// print("valuechange: " + update.toString());
valueChangeQueue.sink.add(update);
}
});
var valueChangeQueueIterator = StreamIterator(valueChangeQueue.stream);
try {
// Make two routing contexts, one with and one without safety
// So we can pretend to be a different node and get the watch updates
// Normally they would not get sent if the set comes from the same target
// as the watch's target
final rcWatch = await Veilid.instance.routingContext();
final rcSet = await Veilid.instance
.unsafeRoutingContext(sequencing: Sequencing.ensureOrdered);
try {
// Make a DHT record
var rec = await rcWatch.createDHTRecord(const DHTSchema.dflt(oCnt: 10));
// Set some subkey we care about
expect(
await rcWatch.setDHTValue(rec.key, 3, utf8.encode("BLAH BLAH BLAH")),
isNull);
// Make a watch on that subkey
expect(await rcWatch.watchDHTValues(rec.key),
isNot(equals(Timestamp.zero())));
// Reopen without closing to change routing context and not lose watch
rec = await rcSet.openDHTRecord(rec.key, writer: rec.ownerKeyPair());
// Now set the subkey and trigger an update
expect(await rcSet.setDHTValue(rec.key, 3, utf8.encode("BLAH")), isNull);
// Now we should NOT get an update because the update
// is the same as our local copy
if (await valueChangeQueueIterator
.moveNext()
.timeout(const Duration(seconds: 5), onTimeout: () {
return false;
})) {
fail("should not have a change");
}
valueChangeQueueIterator = StreamIterator(valueChangeQueue.stream);
// Now set multiple subkeys and trigger an update
expect(
await [
rcSet.setDHTValue(rec.key, 3, utf8.encode("BLAH BLAH")),
rcSet.setDHTValue(rec.key, 4, utf8.encode("BZORT"))
].wait,
equals([null, null]));
// Wait for the update
await valueChangeQueueIterator
.moveNext()
.timeout(const Duration(seconds: 5), onTimeout: () {
fail("should have a change");
});
// Verify the update
expect(valueChangeQueueIterator.current.key, equals(rec.key));
expect(valueChangeQueueIterator.current.count, equals(0xFFFFFFFD));
expect(valueChangeQueueIterator.current.subkeys,
equals([ValueSubkeyRange.make(3, 4)]));
expect(valueChangeQueueIterator.current.value, isNull);
// Reopen without closing to change routing context and not lose watch
rec = await rcWatch.openDHTRecord(rec.key, writer: rec.ownerKeyPair());
// Cancel some subkeys we don't care about
expect(
await rcWatch
.cancelDHTWatch(rec.key, subkeys: [ValueSubkeyRange.make(0, 2)]),
isTrue);
// Reopen without closing to change routing context and not lose watch
rec = await rcSet.openDHTRecord(rec.key, writer: rec.ownerKeyPair());
// Now set multiple subkeys and trigger an update
expect(
await [
rcSet.setDHTValue(rec.key, 3, utf8.encode("BLAH BLAH BLAH")),
rcSet.setDHTValue(rec.key, 5, utf8.encode("BZORT BZORT"))
].wait,
equals([null, null]));
// Wait for the update
await valueChangeQueueIterator
.moveNext()
.timeout(const Duration(seconds: 5), onTimeout: () {
fail("should have a change");
});
// Verify the update came back but we don't get a new value because the sequence number is the same
expect(valueChangeQueueIterator.current.key, equals(rec.key));
expect(valueChangeQueueIterator.current.count, equals(0xFFFFFFFC));
expect(valueChangeQueueIterator.current.subkeys,
equals([ValueSubkeyRange.single(3), ValueSubkeyRange.single(5)]));
expect(valueChangeQueueIterator.current.value, isNull);
// Reopen without closing to change routing context and not lose watch
rec = await rcWatch.openDHTRecord(rec.key, writer: rec.ownerKeyPair());
// Now cancel the update
expect(
await rcWatch
.cancelDHTWatch(rec.key, subkeys: [ValueSubkeyRange.make(3, 9)]),
isFalse);
// Reopen without closing to change routing context and not lose watch
rec = await rcSet.openDHTRecord(rec.key, writer: rec.ownerKeyPair());
// Now set multiple subkeys and trigger an update
expect(
await [
rcSet.setDHTValue(rec.key, 3, utf8.encode("BLAH BLAH BLAH BLAH")),
rcSet.setDHTValue(rec.key, 5, utf8.encode("BZORT BZORT BZORT"))
].wait,
equals([null, null]));
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// Now we should NOT get an update
if (await valueChangeQueueIterator
.moveNext()
.timeout(const Duration(seconds: 5), onTimeout: () {
return false;
})) {
fail("should not have a change");
}
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// Clean up
await rcSet.closeDHTRecord(rec.key);
await rcSet.deleteDHTRecord(rec.key);
} finally {
rcWatch.close();
rcSet.close();
}
} finally {
await valueChangeSubscription.cancel();
}
}
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Future<void> testInspectDHTRecord() async {
final rc = await Veilid.instance.routingContext();
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try {
var rec = await rc.createDHTRecord(const DHTSchema.dflt(oCnt: 2));
expect(await rc.setDHTValue(rec.key, 0, utf8.encode("BLAH BLAH BLAH")),
isNull);
final rr = await rc.inspectDHTRecord(rec.key);
expect(rr.subkeys, equals([ValueSubkeyRange.make(0, 1)]));
expect(rr.localSeqs, equals([0, 0xFFFFFFFF]));
expect(rr.networkSeqs, equals([]));
final rr2 =
await rc.inspectDHTRecord(rec.key, scope: DHTReportScope.syncGet);
expect(rr2.subkeys, equals([ValueSubkeyRange.make(0, 1)]));
expect(rr2.localSeqs, equals([0, 0xFFFFFFFF]));
expect(rr2.networkSeqs, equals([0, 0xFFFFFFFF]));
await rc.closeDHTRecord(rec.key);
await rc.deleteDHTRecord(rec.key);
} finally {
rc.close();
}
}