英文:
unable to connect spring boot java application to amazon keyspaces
问题
这是配置类。
@Configuration
@PropertySource(value = { "classpath:cassandra.properties" })
@EnableCassandraRepositories(basePackages = { "com.example.demo.repository" })
public class CassnadraConfig extends AbstractCassandraConfiguration {
private static final Logger LOG = LoggerFactory.getLogger(CassnadraConfig.class);
@Autowired
private Environment environment;
@Bean
@Override
public CassandraClusterFactoryBean cluster() {
final CassandraClusterFactoryBean cluster = new CassandraClusterFactoryBean();
try {
PoolingOptions poolingOptions = new PoolingOptions();
poolingOptions.setMaxConnectionsPerHost(HostDistance.LOCAL, 10);
poolingOptions.setPoolTimeoutMillis(5000);
poolingOptions.setCoreConnectionsPerHost(HostDistance.LOCAL, 10);
InputStream is = new FileInputStream("D:/SampleProjects/spring-samples-master/restapi-cassandra/src/main/resources/cassandra_truststore.jks");
KeyStore keystore = KeyStore.getInstance(environment.getProperty("cassandra.truststore.type"));
System.out.println(environment.getProperty("cassandra.truststore.password"));
char[] pwd = environment.getProperty("cassandra.truststore.password").toCharArray();
keystore.load(is, pwd);
TrustManagerFactory tmf = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
tmf.init(keystore);
TrustManager[] tm = tmf.getTrustManagers();
SSLContext sslContext = SSLContext.getInstance("TLS");
sslContext.init(null, tm, null);
JdkSSLOptions sslOptions = JdkSSLOptions.builder().withSSLContext(sslContext).build();
cluster.setUsername(environment.getProperty("cassandra.username"));
cluster.setPassword(environment.getProperty("cassandra.password"));
cluster.setContactPoints(environment.getProperty("cassandra.contactpoints"));
cluster.setPort(Integer.parseInt(environment.getProperty("cassandra.port")));
cluster.setSslEnabled(true);
cluster.setSslOptions(sslOptions);
cluster.setPoolingOptions(poolingOptions);
}
catch(Exception ex) {
System.out.println(ex);
}
return cluster;
}
@Override
protected String getKeyspaceName() {
return environment.getProperty("cassandra.keyspace");
}
@Override
@Bean
public CassandraMappingContext cassandraMapping() throws ClassNotFoundException {
return new BasicCassandraMappingContext();
}
}
实体类。
@AllArgsConstructor
@Getter @Setter
@Table
public class Employee {
@PrimaryKey
private @NonNull String id;
private @NonNull String firstName;
private @NonNull String lastName;
private @NonNull String email;
}
仓库类。
package com.example.demo.repository;
import org.springframework.data.repository.CrudRepository;
import org.springframework.stereotype.Repository;
import com.example.demo.model.Employee;
@Repository
public interface EmployeeRepository extends CrudRepository<Employee, String> {
}
控制器类。
@RestController
public class EmployeeController {
@Autowired
EmployeeRepository employeeRepository;
@GetMapping(value = "/healthcheck", produces = "application/json; charset=utf-8")
public String getHealthCheck() {
return "{\"isWorking\" : true }";
}
@GetMapping("/employees")
public List<Employee> getEmployees() {
Iterable<Employee> result = employeeRepository.findAll();
List<Employee> employeesList = new ArrayList<Employee>();
result.forEach(employeesList::add);
return employeesList;
}
@GetMapping("/employee/{id}")
public Optional<Employee> getEmployee(@PathVariable String id) {
Optional<Employee> emp = employeeRepository.findById(id);
return emp;
}
@PutMapping("/employee/{id}")
public Optional<Employee> updateEmployee(@RequestBody Employee newEmployee, @PathVariable String id) {
Optional<Employee> optionalEmp = employeeRepository.findById(id);
if (optionalEmp.isPresent()) {
Employee emp = optionalEmp.get();
emp.setFirstName(newEmployee.getFirstName());
emp.setLastName(newEmployee.getLastName());
emp.setEmail(newEmployee.getEmail());
employeeRepository.save(emp);
}
return optionalEmp;
}
@DeleteMapping(value = "/employee/{id}", produces = "application/json; charset=utf-8")
public String deleteEmployee(@PathVariable String id) {
Boolean result = employeeRepository.existsById(id);
employeeRepository.deleteById(id);
return "{\"success\" : " + (result ? "true" : "false") + " }";
}
@PostMapping("/employee")
public Employee addEmployee(@RequestBody Employee newEmployee) {
String id = String.valueOf(new Random().nextInt());
Employee emp = new Employee(id, newEmployee.getFirstName(), newEmployee.getLastName(), newEmployee.getEmail());
employeeRepository.save(emp);
return emp;
}
}
主类。
@SpringBootApplication
@ComponentScan
public class DemoApplication {
public static void main(String[] args) {
SpringApplication.run(DemoApplication.class, args);
}
}
出现连接 Amazon Keyspaces 错误的问题。
Caused by: java.lang.IllegalArgumentException: Failed to add contact point: cassandra.us-east-1.amazonaws.com
at com.datastax.driver.core.Cluster$Builder.addContactPoint(Cluster.java:922) ~[cassandra-driver-core-3.6.0.jar:na]
at com.datastax.driver.core.Cluster$Builder.addContactPoints(Cluster.java:942) ~[cassandra-driver-core-3.6.0.jar:na]
at org.springframework.data.cassandra.config.CassandraClusterFactoryBean.afterPropertiesSet(CassandraClusterFactoryBean.java:174) ~[spring-data-cassandra-2.1.4.RELEASE.jar:2.1.4.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1804) ~[spring-beans-5.1.4.RELEASE.jar:5.1.4.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1741) ~[spring-beans-5.1.4.RELEASE.jar:5.1.4.RELEASE]
... 111 common frames omitted
**Caused by: java.net.UnknownHostException: cassandra.us-east-1.amazonaws.com**
Any idea please share it.
英文:
This is the configuration class .
@Configuration
@PropertySource(value = { "classpath:cassandra.properties" })
@EnableCassandraRepositories(basePackages = { "com.example.demo.repository" })
public class CassnadraConfig extends AbstractCassandraConfiguration {
private static final Logger LOG = LoggerFactory.getLogger(CassnadraConfig.class);
@Autowired
private Environment environment;
@Bean
@Override
public CassandraClusterFactoryBean cluster() {
final CassandraClusterFactoryBean cluster = new CassandraClusterFactoryBean();
try {
PoolingOptions poolingOptions = new PoolingOptions();
poolingOptions.setMaxConnectionsPerHost(HostDistance.LOCAL, 10);
poolingOptions.setPoolTimeoutMillis(5000);
poolingOptions.setCoreConnectionsPerHost(HostDistance.LOCAL, 10);
// InputStream is = new FileInputStream(environment.getProperty("cassandra.truststore.path"));
InputStream is = new FileInputStream("D:/SampleProjects/spring-samples-master/restapi-cassandra/src/main/resources/cassandra_truststore.jks");
KeyStore keystore = KeyStore.getInstance(environment.getProperty("cassandra.truststore.type"));
System.out.println(environment.getProperty("cassandra.truststore.password"));
char[] pwd = environment.getProperty("cassandra.truststore.password").toCharArray();
keystore.load(is, pwd);
TrustManagerFactory tmf = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
tmf.init(keystore);
TrustManager[] tm = tmf.getTrustManagers();
SSLContext sslContext = SSLContext.getInstance("TLS");
sslContext.init(null, tm, null);
JdkSSLOptions sslOptions = JdkSSLOptions.builder().withSSLContext(sslContext).build();
cluster.setUsername(environment.getProperty("cassandra.username"));
cluster.setPassword(environment.getProperty("cassandra.password"));
cluster.setContactPoints(environment.getProperty("cassandra.contactpoints"));
cluster.setPort(Integer.parseInt(environment.getProperty("cassandra.port")));
cluster.setSslEnabled(true);
cluster.setSslOptions(sslOptions);
cluster.setPoolingOptions(poolingOptions);
}
catch(Exception ex) {
System.out.println(ex);
}
return cluster;
}
@Override
protected String getKeyspaceName() {
return environment.getProperty("cassandra.keyspace");
}
@Override
@Bean
public CassandraMappingContext cassandraMapping() throws ClassNotFoundException {
return new BasicCassandraMappingContext();
}
}
Entity class
@AllArgsConstructor
@Getter @Setter
@Table
public class Employee {
@PrimaryKey
private @NonNull String id;
private @NonNull String firstName;
private @NonNull String lastName;
private @NonNull String email;
}
Repository class
package com.example.demo.repository;
import org.springframework.data.repository.CrudRepository;
import org.springframework.stereotype.Repository;
import com.example.demo.model.Employee;
@Repository
public interface EmployeeRepository extends CrudRepository<Employee, String> {
}
controller class
@RestController
public class EmployeeController
{
@Autowired
EmployeeRepository employeeRepository;
@GetMapping(value = "/healthcheck", produces = "application/json; charset=utf-8")
public String getHealthCheck()
{
return "{ \"isWorking\" : true }";
}
@GetMapping("/employees")
public List<Employee> getEmployees()
{
Iterable<Employee> result = employeeRepository.findAll();
List<Employee> employeesList = new ArrayList<Employee>();
result.forEach(employeesList::add);
return employeesList;
}
@GetMapping("/employee/{id}")
public Optional<Employee> getEmployee(@PathVariable String id)
{
Optional<Employee> emp = employeeRepository.findById(id);
return emp;
}
@PutMapping("/employee/{id}")
public Optional<Employee> updateEmployee(@RequestBody Employee newEmployee, @PathVariable String id)
{
Optional<Employee> optionalEmp = employeeRepository.findById(id);
if (optionalEmp.isPresent()) {
Employee emp = optionalEmp.get();
emp.setFirstName(newEmployee.getFirstName());
emp.setLastName(newEmployee.getLastName());
emp.setEmail(newEmployee.getEmail());
employeeRepository.save(emp);
}
return optionalEmp;
}
@DeleteMapping(value = "/employee/{id}", produces = "application/json; charset=utf-8")
public String deleteEmployee(@PathVariable String id) {
Boolean result = employeeRepository.existsById(id);
employeeRepository.deleteById(id);
return "{ \"success\" : "+ (result ? "true" : "false") +" }";
}
@PostMapping("/employee")
public Employee addEmployee(@RequestBody Employee newEmployee)
{
String id = String.valueOf(new Random().nextInt());
Employee emp = new Employee(id, newEmployee.getFirstName(), newEmployee.getLastName(), newEmployee.getEmail());
employeeRepository.save(emp);
return emp;
}
}
main class
@SpringBootApplication
@ComponentScan
public class DemoApplication {
public static void main(String[] args) {
SpringApplication.run(DemoApplication.class, args);
}
}
I am not able to connect to amazon keyspaces ,getting error
Caused by: java.lang.IllegalArgumentException: Failed to add contact point: cassandra.us-east-1.amazonaws.com
at com.datastax.driver.core.Cluster$Builder.addContactPoint(Cluster.java:922) ~[cassandra-driver-core-3.6.0.jar:na]
at com.datastax.driver.core.Cluster$Builder.addContactPoints(Cluster.java:942) ~[cassandra-driver-core-3.6.0.jar:na]
at org.springframework.data.cassandra.config.CassandraClusterFactoryBean.afterPropertiesSet(CassandraClusterFactoryBean.java:174) ~[spring-data-cassandra-2.1.4.RELEASE.jar:2.1.4.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1804) ~[spring-beans-5.1.4.RELEASE.jar:5.1.4.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1741) ~[spring-beans-5.1.4.RELEASE.jar:5.1.4.RELEASE]
... 111 common frames omitted
Caused by: java.net.UnknownHostException: cassandra.us-east-1.amazonaws.com
Any idea please share it .
答案1
得分: 1
尝试将本地数据中心设置为us-east-1。我在您的配置中没有看到它。
英文:
Try setting the the local DC as us-east-1. I do not see it in your configuration.
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