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Added logic to move the CREATE VIEW operation to after the connector … #668

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merged 2 commits into from
Jul 12, 2024
Merged

Added logic to move the CREATE VIEW operation to after the connector … #668

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fe74bdc
Added logic to move the CREATE VIEW operation to after the connector …
subkanthi Jul 4, 2024
0c6560c
Merge branch '2.2.0' of github.com:Altinity/clickhouse-sink-connector…
subkanthi Jul 6, 2024
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72 changes: 43 additions & 29 deletions ...c/main/java/com/altinity/clickhouse/debezium/embedded/cdc/DebeziumChangeEventCapture.java
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Original file line number Diff line number Diff line change
Expand Up @@ -307,40 +307,52 @@ private void createDatabaseForDebeziumStorage(ClickHouseSinkConnectorConfig conf
"system", dbCredentials.getUserName(),
dbCredentials.getPassword(), config, conn);

String tableName = props.getProperty(JdbcOffsetBackingStoreConfig.OFFSET_STORAGE_PREFIX +
JdbcOffsetBackingStoreConfig.PROP_TABLE_NAME.name());
if(tableName.contains(".")) {
String[] dbTableNameArray = tableName.split("\\.");
if(dbTableNameArray.length >= 2) {
String dbName = dbTableNameArray[0].replace("\"", "");
String createDbQuery = String.format("create database if not exists %s", dbName);
log.info("CREATING DEBEZIUM STORAGE Database: " + createDbQuery);
writer.executeQuery(createDbQuery);


// Also create view.
String view = " CREATE VIEW IF NOT EXISTS %s.show_replica_status\n" +
" AS\n" +
" SELECT\n" +
" now() - fromUnixTimestamp(JSONExtractUInt(offset_val, 'ts_sec')) AS seconds_behind_source,\n" +
" toDateTime(fromUnixTimestamp(JSONExtractUInt(offset_val, 'ts_sec')), 'UTC') AS utc_time,\n" +
" fromUnixTimestamp(JSONExtractUInt(offset_val, 'ts_sec')) AS local_time,\n" +
" *\n" +
" FROM %s\n" +
" FINAL";
String formattedView = String.format(view, dbName, tableName);
try {
writer.executeQuery(formattedView);
} catch(Exception e) {
log.error("**** Error creating VIEW **** " + formattedView);
}
}
}
Pair<String, String> tableNameDatabaseName = getDebeziumStorageDatabaseName(props);
String databaseName = tableNameDatabaseName.getRight();

String createDbQuery = String.format("create database if not exists %s", databaseName);
log.info("CREATING DEBEZIUM STORAGE Database: " + createDbQuery);
writer.executeQuery(createDbQuery);

} catch(Exception e) {
log.error("Error creating Debezium storage database", e);
}
}

/**
* Function to create view for show_replica_status
* @param config
* @param props
*/
private void createViewForShowReplicaStatus(ClickHouseSinkConnectorConfig config, Properties props) {
String view = props.getProperty(ClickHouseSinkConnectorConfigVariables.REPLICA_STATUS_VIEW.toString());
if(view == null || view.isEmpty() == true) {
log.warn("Skipping creating view for replica_status as the query was not provided in configuration");
return;
}
DBCredentials dbCredentials = parseDBConfiguration(config);

String jdbcUrl = BaseDbWriter.getConnectionString(dbCredentials.getHostName(), dbCredentials.getPort(),
"system");
ClickHouseConnection conn = BaseDbWriter.createConnection(jdbcUrl, "Client_1",dbCredentials.getUserName(), dbCredentials.getPassword(), config);
BaseDbWriter writer = new BaseDbWriter(dbCredentials.getHostName(), dbCredentials.getPort(),
"system", dbCredentials.getUserName(),
dbCredentials.getPassword(), config, conn);
Pair<String, String> tableNameDatabaseName = getDebeziumStorageDatabaseName(props);

String tableName = tableNameDatabaseName.getLeft();
String dbName = tableNameDatabaseName.getRight();

String formattedView = String.format(view, dbName, dbName + "." + tableName);
// Remove quotes.
formattedView = formattedView.replace("\"", "");
try {
writer.executeQuery(formattedView);
} catch(Exception e) {
log.error("**** Error creating VIEW **** " + formattedView);
}
}

/**
*
* @param props
Expand Down Expand Up @@ -623,6 +635,8 @@ public void handle(boolean b, String s, Throwable throwable) {
public void connectorStarted() {
isReplicationRunning = true;
log.debug("Connector started");
// Create view.
createViewForShowReplicaStatus(config, props);
}

@Override
Expand Down
46 changes: 13 additions & 33 deletions sink-connector-lightweight/src/main/resources/config.properties
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Original file line number Diff line number Diff line change
@@ -1,45 +1,25 @@
name= "engine"
#offset.storage=org.apache.kafka.connect.storage.FileOffsetBackingStore
#offset.storage.file.filename=/tmp/offsets.dat

database.server.name= "clickhouse-ddl"
database.server.id= 976
#database.history= "io.debezium.relational.history.FileDatabaseHistory"
#database.history.file.filename=/tmp/dbhistory.dat
#connector.class= io.debezium.connector.mysql.MySqlConnector
converter.schemas.enable= "true"
schemas.enable= true
topic.prefix=embeddedconnector
offset.storage=io.debezium.storage.jdbc.offset.JdbcOffsetBackingStore
offset.storage.jdbc.offset.table.name= "default.replica_source_info"
offset.storage.jdbc.url: "jdbc:clickhouse://clickhouse:8123"
offset.storage.jdbc.user: "root"
offset.storage.jdbc.password: "root"
offset.storage.jdbc.offset.table.ddl: "CREATE TABLE %s
(
`id` String,
`offset_key` String,
`offset_val` String,
`record_insert_ts` DateTime,
`record_insert_seq` UInt64,
`_version` UInt64 MATERIALIZED toUnixTimestamp64Nano(now64(9))
)
ENGINE = ReplacingMergeTree(_version)
ORDER BY id
SETTINGS index_granularity = 8192"
offset.storage.jdbc.offset.table.delete: "delete from %s where 1=1"
schema.history.internal: io.debezium.storage.jdbc.history.JdbcSchemaHistory
schema.history.internal.jdbc.url: "jdbc:clickhouse://clickhouse:8123"
schema.history.internal.jdbc.user: "root"
schema.history.internal.jdbc.password: "root"
schema.history.internal.schema.history.table.ddl: "CREATE TABLE %s
(`id` VARCHAR(36) NOT NULL, `history_data` VARCHAR(65000), `history_data_seq` INTEGER, `record_insert_ts` TIMESTAMP NOT NULL,
`record_insert_seq` INTEGER NOT NULL) Engine=ReplacingMergeTree(record_insert_seq) order by id"

schema.history.internal.schema.history.table.name: "default.replicate_schema_history"

offset.storage.jdbc.url= "jdbc:clickhouse://clickhouse:8123"
offset.storage.jdbc.user= "root"
offset.storage.jdbc.password= "root"
offset.storage.jdbc.offset.table.ddl="CREATE TABLE %s(`id` String, `offset_key` String, `offset_val` String, `record_insert_ts` DateTime, `record_insert_seq` UInt64, `_version` UInt64 MATERIALIZED toUnixTimestamp64Nano(now64(9)))ENGINE = ReplacingMergeTree(_version) ORDER BY id SETTINGS index_granularity = 8192"
offset.storage.jdbc.offset.table.delete="delete from %s where 1=1"
schema.history.internal=io.debezium.storage.jdbc.history.JdbcSchemaHistory
schema.history.internal.jdbc.url="jdbc:clickhouse://clickhouse:8123"
schema.history.internal.jdbc.user="root"
schema.history.internal.jdbc.password="root"
schema.history.internal.schema.history.table.ddl="CREATE TABLE %s(`id` VARCHAR(36) NOT NULL, `history_data` VARCHAR(65000), `history_data_seq` INTEGER, `record_insert_ts` TIMESTAMP NOT NULL, `record_insert_seq` INTEGER NOT NULL) Engine=ReplacingMergeTree(record_insert_seq) order by id"
schema.history.internal.schema.history.table.name="default.replicate_schema_history"
auto.create.tables= false
replacingmergetree.delete.column=_sign
metrics.enable= true
metrics.port= 8083
snapshot.mode= "initial"
snapshot.mode= "initial"
replica.status.view="CREATE VIEW IF NOT EXISTS %s.show_replica_status AS SELECT now() - fromUnixTimestamp(JSONExtractUInt(offset_val, 'ts_sec')) AS seconds_behind_source, toDateTime(fromUnixTimestamp(JSONExtractUInt(offset_val, 'ts_sec')), 'UTC') AS utc_time, fromUnixTimestamp(JSONExtractUInt(offset_val, 'ts_sec')) AS local_time FROM %s FINAL"
14 changes: 14 additions & 0 deletions ...r/src/main/java/com/altinity/clickhouse/sink/connector/ClickHouseSinkConnectorConfig.java
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Original file line number Diff line number Diff line change
Expand Up @@ -450,6 +450,20 @@ static ConfigDef newConfigDef() {
6,
ConfigDef.Width.NONE,
ClickHouseSinkConnectorConfigVariables.MAX_QUEUE_SIZE.toString())
.define(
ClickHouseSinkConnectorConfigVariables.REPLICA_STATUS_VIEW.toString(),
Type.STRING,
"CREATE VIEW IF NOT EXISTS %s.show_replica_status AS SELECT now() - " +
"fromUnixTimestamp(JSONExtractUInt(offset_val, 'ts_sec')) AS seconds_behind_source, " +
"toDateTime(fromUnixTimestamp(JSONExtractUInt(offset_val, 'ts_sec')), 'UTC') AS utc_time, " +
"fromUnixTimestamp(JSONExtractUInt(offset_val, 'ts_sec')) AS local_time," +
"* FROM %s FINAL",
Importance.HIGH,
"SQL query to get replica status, lag etc.",
CONFIG_GROUP_CONNECTOR_CONFIG,
6,
ConfigDef.Width.NONE,
ClickHouseSinkConnectorConfigVariables.REPLICA_STATUS_VIEW.toString())

;
}
Expand Down
1 change: 1 addition & 0 deletions ...n/java/com/altinity/clickhouse/sink/connector/ClickHouseSinkConnectorConfigVariables.java
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Expand Up @@ -72,6 +72,7 @@ public enum ClickHouseSinkConnectorConfigVariables {
RESTART_EVENT_LOOP_TIMEOUT_PERIOD("restart.event.loop.timeout.period.secs"),
JDBC_PARAMETERS("clickhouse.jdbc.params"),

REPLICA_STATUS_VIEW("replica.status.view"),
MAX_QUEUE_SIZE("sink.connector.max.queue.size");

private String label;
Expand Down
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