Reactive way of reading YAML with Jackson using Spring boot webflux - spring-boot

Question

The yamlObjectMapper in configuration
#Bean
public ObjectMapper yamlObjectMapper() {
ObjectMapper yamlObjectMapper = new ObjectMapper(new YAMLFactory().disable(YAMLGenerator.Feature
.WRITE_DOC_START_MARKER));
yamlObjectMapper.findAndRegisterModules();
return yamlObjectMapper;
}
The Service to parse yaml file
#Service
public class CustomerService {
#Autowired
#Qualifier("yamlObjectMapper")
private ObjectMapper yamlObjectMapper;
public Customer get() {
try {
InputStream inputStream = ResourceUtils.getURL("classpath:/files/test.yaml").openStream();
return yamlObjectMapper.readValue(inputStream, Customer.class);
} catch (IOException ex) {
throw new IllegalStateException(ex);
}
}
#Data
public static class Customer {
private String name;
private String surname;
private String email;
}
}
I guess IO operations are blocking, how this can be done using reactive way?

Answer 1

I would rather use configuration binding since probably you need to read it once.
package com.vob.webflux.webfilter.controller;
import lombok.Getter;
import lombok.Setter;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.PropertySource;
import org.springframework.stereotype.Component;
#Component
#PropertySource(value = "classpath:config.yml", factory= YamlPropertySourceFactory.class)
#Getter
public class YamlFooProperties {
#Value("${test}")
private String test;
}
Factory
package com.vob.webflux.webfilter.controller;
import org.springframework.beans.factory.config.YamlPropertiesFactoryBean;
import org.springframework.core.env.PropertiesPropertySource;
import org.springframework.core.env.PropertySource;
import org.springframework.core.io.support.EncodedResource;
import org.springframework.core.io.support.PropertySourceFactory;
import java.io.IOException;
import java.util.Properties;
public class YamlPropertySourceFactory implements PropertySourceFactory {
#Override
public PropertySource<?> createPropertySource(String name, EncodedResource encodedResource)
throws IOException {
YamlPropertiesFactoryBean factory = new YamlPropertiesFactoryBean();
factory.setResources(encodedResource.getResource());
Properties properties = factory.getObject();
return new PropertiesPropertySource(encodedResource.getResource().getFilename(), properties);
}
}
Source factory from