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A simple integration test is part of this commit. It verifies that change events originated by a CockroachDB changefeed, and routed via a single node Kafka cluster are received by the connector and applied to a target CockroachDB datatabase.
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| // Copyright 2024 The Cockroach 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. | ||
| // | ||
| // SPDX-License-Identifier: Apache-2.0 | ||
|
|
||
| package kafka | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "testing" | ||
| "time" | ||
|
|
||
| "github.com/cockroachdb/cdc-sink/internal/script" | ||
| "github.com/cockroachdb/cdc-sink/internal/sinkprod" | ||
| "github.com/cockroachdb/cdc-sink/internal/sinktest" | ||
| "github.com/cockroachdb/cdc-sink/internal/sinktest/all" | ||
| "github.com/cockroachdb/cdc-sink/internal/sinktest/base" | ||
| "github.com/cockroachdb/cdc-sink/internal/sinktest/scripttest" | ||
| "github.com/cockroachdb/cdc-sink/internal/util/ident" | ||
| "github.com/prometheus/client_golang/prometheus" | ||
| log "github.com/sirupsen/logrus" | ||
| "github.com/stretchr/testify/assert" | ||
| "github.com/stretchr/testify/require" | ||
| ) | ||
|
|
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| type fixtureConfig struct { | ||
| chaos bool | ||
| script bool | ||
| } | ||
|
|
||
| const ( | ||
| broker = "localhost:29092" | ||
| ) | ||
|
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| // TestMain verifies that we can run the integration test for Kafka. | ||
| func TestMain(m *testing.M) { | ||
| all.IntegrationMain(m, all.KafkaName) | ||
| } | ||
|
|
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| // TODO (silvano): add test that's driven by a seqtest.Generator | ||
| // https://github.com/cockroachdb/cdc-sink/issues/789 | ||
|
|
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| // TestKafka verifies that we can process simple messages from Kafka. | ||
| // The kafka messages are generated by a CockroachDB changefeed in JSON format. | ||
| func TestKafka(t *testing.T) { | ||
| t.Run("immediate", func(t *testing.T) { testIntegration(t, &fixtureConfig{}) }) | ||
| t.Run("immediate chaos", func(t *testing.T) { testIntegration(t, &fixtureConfig{chaos: true}) }) | ||
| t.Run("immediate script", func(t *testing.T) { testIntegration(t, &fixtureConfig{script: true}) }) | ||
| } | ||
|
|
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| func testIntegration(t *testing.T, fc *fixtureConfig) { | ||
| a := assert.New(t) | ||
| r := require.New(t) | ||
| var stopped <-chan struct{} | ||
| defer func() { | ||
| if stopped != nil { | ||
| <-stopped | ||
| } | ||
| }() | ||
|
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| // Create a basic fixture to represent a source database. | ||
| sourceFixture, err := base.NewFixture(t) | ||
| r.NoError(err) | ||
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| ctx := sourceFixture.Context | ||
|
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| // Create a basic destination database connection. | ||
| destFixture, err := base.NewFixture(t) | ||
| r.NoError(err) | ||
|
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| targetDB := destFixture.TargetSchema.Schema() | ||
| targetPool := destFixture.TargetPool | ||
|
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| // Set up source and target tables. | ||
| source, err := sourceFixture.CreateSourceTable(ctx, "CREATE TABLE %s (pk INT PRIMARY KEY, v STRING)") | ||
| r.NoError(err) | ||
|
|
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| // Since we're creating the target table without using the helper | ||
| // CreateTable(), we need to manually refresh the target's Watcher. | ||
| target := ident.NewTable(targetDB, source.Name().Table()) | ||
| targetCol := "v" | ||
| if fc.script { | ||
| targetCol = "v_mapped" | ||
| } | ||
| _, err = targetPool.ExecContext(ctx, fmt.Sprintf("CREATE TABLE %s (pk INT PRIMARY KEY, %s VARCHAR(2048))", target, targetCol)) | ||
| r.NoError(err) | ||
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| serverCfg, err := getConfig(destFixture, fc, target) | ||
| r.NoError(err) | ||
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| kafka, err := Start(ctx, serverCfg) | ||
| r.NoError(err) | ||
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| watcher, err := kafka.Conn.watchers.Get(targetDB) | ||
| r.NoError(err) | ||
| r.NoError(watcher.Refresh(ctx, targetPool)) | ||
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| createStmt := "CREATE CHANGEFEED FOR TABLE %s INTO" + | ||
| fmt.Sprintf("'kafka://%s?topic_prefix=%s.'", broker, targetDB.Raw()) + | ||
| " WITH updated,diff,resolved='5s',min_checkpoint_frequency='5s'" | ||
| r.NoError(source.Exec(ctx, createStmt)) | ||
|
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| // Add base data to the source table. | ||
| r.NoError(source.Exec(ctx, "INSERT INTO %s (pk, v) VALUES (1, 'one')")) | ||
| ct, err := source.RowCount(ctx) | ||
| r.NoError(err) | ||
| a.Equal(1, ct) | ||
|
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| // Wait for the backfilled value. | ||
| for { | ||
| ct, err := base.GetRowCount(ctx, targetPool, target) | ||
| r.NoError(err) | ||
| if ct >= 1 { | ||
| break | ||
| } | ||
| log.Infof("waiting for backfill %s", target) | ||
| time.Sleep(time.Second) | ||
| } | ||
|
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| // Update the first value | ||
| r.NoError(source.Exec(ctx, "UPSERT INTO %s (pk, v) VALUES (1, 'updated')")) | ||
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| // Insert an additional value | ||
| r.NoError(source.Exec(ctx, "INSERT INTO %s (pk, v) VALUES (2, 'two')")) | ||
| ct, err = source.RowCount(ctx) | ||
| r.NoError(err) | ||
| a.Equal(2, ct) | ||
|
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| // Wait for the streamed value. | ||
| for { | ||
| ct, err := base.GetRowCount(ctx, targetPool, target) | ||
| r.NoError(err) | ||
| if ct >= 2 { | ||
| break | ||
| } | ||
| log.Infof("waiting for stream %s", target) | ||
| time.Sleep(100 * time.Millisecond) | ||
| } | ||
|
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| // Also wait to see that the update was applied. | ||
| for { | ||
| var val string | ||
| r.NoError(targetPool.QueryRowContext(ctx, | ||
| fmt.Sprintf("SELECT %s FROM %s WHERE pk = 1", targetCol, target), | ||
| ).Scan(&val)) | ||
| if val == "updated" { | ||
| break | ||
| } | ||
| log.Debug("waiting for update") | ||
| time.Sleep(100 * time.Millisecond) | ||
| } | ||
|
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| metrics, err := prometheus.DefaultGatherer.Gather() | ||
| a.NoError(err) | ||
| log.WithField("metrics", metrics).Trace() | ||
| sinktest.CheckDiagnostics(ctx, t, kafka.Diagnostics) | ||
|
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| } | ||
|
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| // getConfig is a helper function to create a configuration for the connector | ||
| func getConfig(fixture *base.Fixture, fc *fixtureConfig, tgt ident.Table) (*Config, error) { | ||
| dbName := fixture.TargetSchema.Schema() | ||
| crdbPool := fixture.TargetPool | ||
| config := &Config{ | ||
| Staging: sinkprod.StagingConfig{ | ||
| Schema: fixture.StagingDB.Schema(), | ||
| }, | ||
| Target: sinkprod.TargetConfig{ | ||
| CommonConfig: sinkprod.CommonConfig{ | ||
| Conn: crdbPool.ConnectionString, | ||
| }, | ||
| ApplyTimeout: 2 * time.Minute, // Increase to make using the debugger easier. | ||
| }, | ||
| TargetSchema: dbName, | ||
|
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| BatchSize: 100, | ||
| Brokers: []string{broker}, | ||
| Group: dbName.Raw(), | ||
| Strategy: "sticky", | ||
| Topics: []string{tgt.Raw()}, | ||
| } | ||
| if fc.chaos { | ||
| config.Sequencer.Chaos = 0.0005 | ||
| } | ||
| if fc.script { | ||
| config.Script = script.Config{ | ||
| FS: scripttest.ScriptFSFor(tgt), | ||
| MainPath: "/testdata/logical_test.ts", | ||
| } | ||
| } | ||
| return config, config.Preflight() | ||
| } |
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