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[FLINK-38685][cdc-connector-postgresql] Redact sensitive information like password from logs #4174

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[FLINK-38685][cdc-connector-postgresql] Redact sensitive information like password from logs #4174

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fb2e77e
Support for transaction boundaries in mysql connector
tejanshrana Nov 4, 2025
9c66f71
Redact sensitive information from postgres cdc connector logs
tejanshrana Nov 14, 2025
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33 changes: 32 additions & 1 deletion ...org/apache/flink/cdc/connectors/postgres/source/fetch/PostgresSourceFetchTaskContext.java
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Original file line number Diff line number Diff line change
Expand Up @@ -69,6 +69,7 @@
import org.slf4j.LoggerFactory;

import java.sql.SQLException;
import java.util.Properties;

import static io.debezium.connector.AbstractSourceInfo.SCHEMA_NAME_KEY;
import static io.debezium.connector.AbstractSourceInfo.TABLE_NAME_KEY;
Expand Down Expand Up @@ -168,7 +169,9 @@ public void configure(SourceSplitBase sourceSplitBase) {
.build());
}

LOG.info("PostgresConnectorConfig is {}", dbzConfig.getConfig().asProperties().toString());
LOG.info(
"PostgresConnectorConfig is {}",
redactSensitiveProperties(dbzConfig.getConfig().asProperties()));
setDbzConnectorConfig(dbzConfig);
PostgresConnectorConfig.SnapshotMode snapshotMode =
PostgresConnectorConfig.SnapshotMode.parse(
Expand Down Expand Up @@ -387,4 +390,32 @@ private boolean isBackFillSplit(SourceSplitBase sourceSplitBase) {
&& !StreamSplit.STREAM_SPLIT_ID.equalsIgnoreCase(
sourceSplitBase.asStreamSplit().splitId());
}

/**
* Redacts sensitive properties from the configuration for safe logging.
*
* @param properties the properties to redact
* @return a new Properties object with sensitive values redacted
*/
private static Properties redactSensitiveProperties(Properties properties) {
Properties redacted = new Properties();
redacted.putAll(properties);

// Redact password-related properties
String[] sensitiveKeys = {
"database.password",
"password",
"database.sslpassword",
"database.truststore.password",
"database.keystore.password"
};

for (String key : sensitiveKeys) {
if (redacted.containsKey(key)) {
redacted.setProperty(key, "******");
}
}

return redacted;
}
}