Spring Boot Actuator Health Indicator

Question

We have been using Spring Boot for several projects now, We are using the latest version 1.2.3. We are incorporating Actuator. So far things are working well except we are f

Answer 1

The above comment helpedme to init my research but for me it was not enough :

@Bean
@Primary
public DataSourceHealthIndicator dataSourceHealthIndicator() {
    return new DataSourceHealthIndicator(dataSource, "SELECT 1 FROM DUAL");
}

Here is the configuration that helped me to make it run: Define HealthIndicator @Bean like the follow and provide the required query :

@Bean
@Primary
public HealthIndicator dbHealthIndicator() {
  return new DataSourceHealthIndicator(dataSource, "SELECT 1 FROM DUMMY");
}

If no Query is providen the SELECT 1 will be used . As #derFuerst said will be used , Here is the defailt implementation of DataSourceHealthIndicator :

public DataSourceHealthIndicator(DataSource dataSource, String query) {
    super("DataSource health check failed");
    this.dataSource = dataSource;
    this.query = query;
    this.jdbcTemplate = dataSource != null ? new JdbcTemplate(dataSource) : null;
}
...
protected String getValidationQuery(String product) {
        String query = this.query;
        if (!StringUtils.hasText(query)) {
            DatabaseDriver specific = DatabaseDriver.fromProductName(product);
            query = specific.getValidationQuery();
        }

        if (!StringUtils.hasText(query)) {
            query = "SELECT 1";
        }

        return query;
    }