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104 changes: 104 additions & 0 deletions
104
go/vt/vttablet/tabletmanager/vreplication/utils_test.go
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,104 @@ | ||
| /* | ||
| Copyright 2021 The Vitess 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. | ||
| */ | ||
|
|
||
| package vreplication | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "strings" | ||
| "testing" | ||
|
|
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| "github.com/stretchr/testify/require" | ||
|
|
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| "vitess.io/vitess/go/sqltypes" | ||
| "vitess.io/vitess/go/vt/binlog/binlogplayer" | ||
| "vitess.io/vitess/go/vt/log" | ||
| "vitess.io/vitess/go/vt/sqlparser" | ||
|
|
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| binlogdatapb "vitess.io/vitess/go/vt/proto/binlogdata" | ||
| ) | ||
|
|
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| func TestInsertLogTruncation(t *testing.T) { | ||
| dbClient := binlogplayer.NewMockDBClient(t) | ||
| defer dbClient.Close() | ||
| dbClient.RemoveInvariant("insert into _vt.vreplication_log") | ||
| stats := binlogplayer.NewStats() | ||
| defer stats.Stop() | ||
| vdbClient := newVDBClient(dbClient, stats) | ||
| defer vdbClient.Close() | ||
| vrID := int32(1) | ||
| typ := "Testing" | ||
| state := binlogdatapb.VReplicationWorkflowState_Error.String() | ||
| maxMessageLen := 65535 | ||
| truncationStr := fmt.Sprintf(" ... %s ... ", sqlparser.TruncationText) | ||
|
|
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| insertStmtf := "insert into _vt.vreplication_log(vrepl_id, type, state, message) values(%d, '%s', '%s', %s)" | ||
|
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| tests := []struct { | ||
| message string | ||
| expectTruncation bool | ||
| }{ | ||
| { | ||
| message: "Simple message that's not truncated", | ||
| }, | ||
| { | ||
| message: "Simple message that needs to be truncated " + strings.Repeat("a", 80000) + " cuz it's long", | ||
| expectTruncation: true, | ||
| }, | ||
| { | ||
| message: "Simple message that doesn't need to be truncated " + strings.Repeat("b", 64000) + " cuz it's not quite too long", | ||
| }, | ||
| { | ||
| message: "Message that is just barely short enough " + strings.Repeat("c", maxMessageLen-(len("Message that is just barely short enough ")+len(" so it doesn't get truncated"))) + " so it doesn't get truncated", | ||
| }, | ||
| { | ||
| message: "Message that is just barely too long " + strings.Repeat("d", maxMessageLen-(len("Message that is just barely too long ")+len(" so it gets truncated"))+1) + " so it gets truncated", | ||
| expectTruncation: true, | ||
| }, | ||
| { | ||
| message: "Super long message brosef wut r ya doin " + strings.Repeat("e", 60000) + strings.Repeat("f", 60000) + " so maybe don't do that to yourself and your friends", | ||
| expectTruncation: true, | ||
| }, | ||
| { | ||
| message: "Super duper long message brosef wut r ya doin " + strings.Repeat("g", 120602) + strings.Repeat("h", 120001) + " so maybe really don't do that to yourself and your friends", | ||
| expectTruncation: true, | ||
| }, | ||
| } | ||
| for _, tc := range tests { | ||
| t.Run("insertLog", func(t *testing.T) { | ||
| var messageOut string | ||
| if tc.expectTruncation { | ||
| log.Errorf("BEFORE:: Message length: %d", len(tc.message)) | ||
| mid := (len(tc.message) / 2) - len(truncationStr) | ||
| for mid > (maxMessageLen / 2) { | ||
| mid = mid / 2 | ||
| } | ||
| tail := (len(tc.message) - (mid + len(truncationStr))) + 1 | ||
| messageOut = fmt.Sprintf("%s%s%s", tc.message[:mid], truncationStr, tc.message[tail:]) | ||
| require.True(t, strings.HasPrefix(messageOut, tc.message[:10])) // Confirm we still have the same beginning | ||
| require.True(t, strings.HasSuffix(messageOut, tc.message[len(tc.message)-10:])) // Confirm we still have the same end | ||
| require.True(t, strings.Contains(messageOut, truncationStr)) // Confirm we have the truncation text | ||
| } else { | ||
| messageOut = tc.message | ||
| } | ||
| require.LessOrEqual(t, len(messageOut), 65535) | ||
| dbClient.ExpectRequest(fmt.Sprintf(insertStmtf, vrID, typ, state, encodeString(messageOut)), &sqltypes.Result{}, nil) | ||
| err := insertLog(vdbClient, typ, vrID, state, tc.message) | ||
| require.NoError(t, err) | ||
| dbClient.Wait() | ||
| }) | ||
| } | ||
| } |