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
|
// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.clustercontroller.core.rpc;
import com.yahoo.vespa.clustercontroller.core.ClusterStateBundle;
import com.yahoo.vespa.clustercontroller.core.ClusterStateBundleUtil;
import com.yahoo.vespa.clustercontroller.core.StateMapping;
import org.junit.jupiter.api.Test;
import static org.hamcrest.CoreMatchers.equalTo;
import static org.hamcrest.Matchers.lessThan;
import static org.hamcrest.MatcherAssert.assertThat;
public class SlimeClusterStateBundleCodecTest {
private static ClusterStateBundle roundtripEncode(ClusterStateBundle stateBundle) {
SlimeClusterStateBundleCodec codec = new SlimeClusterStateBundleCodec();
EncodedClusterStateBundle encoded = codec.encode(stateBundle);
return codec.decode(encoded);
}
private static ClusterStateBundle roundtripEncodeWithEnvelope(ClusterStateBundle stateBundle) {
SlimeClusterStateBundleCodec codec = new SlimeClusterStateBundleCodec();
byte[] encoded = codec.encodeWithEnvelope(stateBundle);
return codec.decodeWithEnvelope(encoded);
}
@Test
void baseline_only_bundle_can_be_round_trip_encoded() {
ClusterStateBundle stateBundle = ClusterStateBundleUtil.makeBundle("distributor:2 storage:2");
assertThat(roundtripEncode(stateBundle), equalTo(stateBundle));
}
@Test
void multi_space_state_bundle_can_be_round_trip_encoded() {
ClusterStateBundle stateBundle = ClusterStateBundleUtil.makeBundle("distributor:2 storage:2",
StateMapping.of("default", "distributor:2 storage:2 .0.s:d"),
StateMapping.of("upsidedown", "distributor:2 .0.s:d storage:2"));
assertThat(roundtripEncode(stateBundle), equalTo(stateBundle));
}
private static ClusterStateBundle makeCompressableBundle() {
StringBuilder allDownStates = new StringBuilder(2048);
for (int i = 0; i < 99; ++i) {
allDownStates.append(" .").append(i).append(".s:d");
}
// Exact same state set string repeated twice; perfect compression fodder.
return ClusterStateBundleUtil.makeBundle(String.format("distributor:100%s storage:100%s",
allDownStates, allDownStates));
}
@Test
void encoded_cluster_states_can_be_compressed() {
ClusterStateBundle stateBundle = makeCompressableBundle();
SlimeClusterStateBundleCodec codec = new SlimeClusterStateBundleCodec();
EncodedClusterStateBundle encoded = codec.encode(stateBundle);
assertThat(encoded.getCompression().data().length, lessThan(stateBundle.getBaselineClusterState().toString().length()));
ClusterStateBundle decodedBundle = codec.decode(encoded);
assertThat(decodedBundle, equalTo(stateBundle));
}
@Test
void uncompressed_enveloped_bundle_can_be_roundtrip_encoded() {
// Insufficient length and too much entropy to be compressed
ClusterStateBundle stateBundle = ClusterStateBundleUtil.makeBundle("distributor:2 storage:3");
assertThat(roundtripEncodeWithEnvelope(stateBundle), equalTo(stateBundle));
}
@Test
void compressable_enveloped_bundle_can_be_roundtrip_encoded() {
ClusterStateBundle stateBundle = makeCompressableBundle();
assertThat(roundtripEncodeWithEnvelope(stateBundle), equalTo(stateBundle));
}
@Test
void can_roundtrip_encode_bundle_with_deferred_activation_enabled() {
var stateBundle = ClusterStateBundleUtil.makeBundleBuilder("distributor:2 storage:2")
.deferredActivation(true)
.deriveAndBuild();
assertThat(roundtripEncode(stateBundle), equalTo(stateBundle));
}
@Test
void can_roundtrip_encode_bundle_with_deferred_activation_disabled() {
var stateBundle = ClusterStateBundleUtil.makeBundleBuilder("distributor:2 storage:2")
.deferredActivation(false)
.deriveAndBuild();
assertThat(roundtripEncode(stateBundle), equalTo(stateBundle));
}
@Test
void can_roundtrip_encode_bundle_with_feed_block_state() {
var stateBundle = ClusterStateBundleUtil.makeBundleBuilder("distributor:2 storage:2")
.feedBlock(ClusterStateBundle.FeedBlock.blockedWithDescription("more cake needed"))
.deriveAndBuild();
assertThat(roundtripEncode(stateBundle), equalTo(stateBundle));
}
}
|
