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// Copyright 2022 The NATS Authors | ||
// Licensed under the Apache License, Version 2.0 (the "License"); | ||
// you may not use this file except in compliance with the License. | ||
// You may obtain a copy of the License at | ||
// | ||
// http://www.apache.org/licenses/LICENSE-2.0 | ||
// | ||
// Unless required by applicable law or agreed to in writing, software | ||
// distributed under the License is distributed on an "AS IS" BASIS, | ||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
// See the License for the specific language governing permissions and | ||
// limitations under the License. | ||
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package nats | ||
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import ( | ||
"testing" | ||
) | ||
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func TestKeyValueDiscardOldToDiscardNew(t *testing.T) { | ||
s := RunBasicJetStreamServer() | ||
defer shutdownJSServerAndRemoveStorage(t, s) | ||
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nc, js := jsClient(t, s) | ||
defer nc.Close() | ||
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checkDiscard := func(expected DiscardPolicy) KeyValue { | ||
t.Helper() | ||
kv, err := js.CreateKeyValue(&KeyValueConfig{Bucket: "TEST", History: 1}) | ||
if err != nil { | ||
t.Fatalf("Error creating store: %v", err) | ||
} | ||
si, err := js.StreamInfo("KV_TEST") | ||
if err != nil { | ||
t.Fatalf("Error getting stream info: %v", err) | ||
} | ||
if si.Config.Discard != expected { | ||
t.Fatalf("Expected discard policy %v, got %+v", expected, si) | ||
} | ||
return kv | ||
} | ||
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// We are going to go from 2.7.1->2.7.2->2.7.1 and 2.7.2 again. | ||
for i := 0; i < 2; i++ { | ||
// Change the server version in the connection to | ||
// create as-if we were connecting to a v2.7.1 server. | ||
nc.mu.Lock() | ||
nc.info.Version = "2.7.1" | ||
nc.mu.Unlock() | ||
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kv := checkDiscard(DiscardOld) | ||
if i == 0 { | ||
if _, err := kv.PutString("foo", "value"); err != nil { | ||
t.Fatalf("Error adding key: %v", err) | ||
} | ||
} | ||
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// Now change version to 2.7.2 | ||
nc.mu.Lock() | ||
nc.info.Version = "2.7.2" | ||
nc.mu.Unlock() | ||
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kv = checkDiscard(DiscardNew) | ||
// Make sure the key still exists | ||
if e, err := kv.Get("foo"); err != nil || string(e.Value()) != "value" { | ||
t.Fatalf("Error getting key: err=%v e=%+v", err, e) | ||
} | ||
} | ||
} |
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