I am trying to connect embedded server but always getting
Caused by: java.io.IOException: Unable to lock org.neo4j.kernel.impl.nioneo.store.StoreFileChannel#5ceccc52
This is my configuration file.
#Configuration
#EnableNeo4jRepositories
public class Neo4jConfig extends Neo4jConfiguration {
public static final Setting<Boolean> remote_shell_enabled = Settings.setting("remote_shell_enabled", Settings.BOOLEAN, Settings.TRUE);
public static final Setting<Boolean> enable_remote_shell = Settings.setting("enable_remote_shell", Settings.BOOLEAN, Settings.TRUE);
public Neo4jConfig() {
setBasePackage("com.repo", "com.model");
}
#Bean
GraphDatabaseService graphDatabaseService() {
return new GraphDatabaseFactory()
.newEmbeddedDatabaseBuilder("neo.db2")
.setConfig(enable_remote_shell, "true")
.newGraphDatabase();
}
}
How are you trying to connect the shell?
Just do:
bin/neo4j-shell
No -path parameter !! As then you would start a new database on the same directory.
Related
I want to register and execute stored proc. I am using spring+Java with cosmos DB. Everytime I stop my application and restart it , it tried to create new sproc and since it already exists in cosmos DB it fails with below error . Is their any option available like "only create if not exist". I am fetching js file from src/main/resources folder.
I am following below doc to register the stored proc
https://learn.microsoft.com/en-us/azure/cosmos-db/nosql/how-to-use-stored-procedures-triggers-udfs?tabs=java-sdk
#Configuration
public class StoredProcConfig
{
#Autowired
#Qualifier(BeansConstants.PAYMENT_CONTAINER)
CosmosContainer container;
#Bean
public CosmosStoredProcedureResponse registerSp() throws IOException
{
InputStream is = getFileFromResourceAsStream("storedProcedures/createStudent.js");
CosmosStoredProcedureProperties definition = new CosmosStoredProcedureProperties("spCreateToDoItems",
IOUtils.toString(is, StandardCharsets.UTF_8));
return container.getScripts().createStoredProcedure(definition);
}
private InputStream getFileFromResourceAsStream(String fileName)
{
// The class loader that loaded the class
ClassLoader classLoader = getClass().getClassLoader();
InputStream inputStream = classLoader.getResourceAsStream(fileName);
// the stream holding the file content
if (inputStream == null)
{
throw new IllegalArgumentException("file not found! " + fileName);
} else
{
return inputStream;
}
}
}
Error
Caused by: com.azure.cosmos.CosmosException: {"innerErrorMessage":"Message: {\"Errors\":[\"Resource with specified id, name, or unique index already exists.\"]}
Modify your registerSp() bean as below:
private static final Logger logger = LoggerFactory.getLogger(CosmosConfiguration.class);
#Bean
public CosmosStoredProcedureResponse registerSp() throws IOException
{
InputStream is = getFileFromResourceAsStream("storedProcedures/createStudent.js");
CosmosStoredProcedureProperties definition = new CosmosStoredProcedureProperties("spCreateToDoItems",
IOUtils.toString(is, StandardCharsets.UTF_8));
return createStoredProcedureIfNotExists(definition);
}
public CosmosStoredProcedureResponse createStoredProcedureIfNotExists(CosmosStoredProcedureProperties definition){
try {
CosmosStoredProcedureResponse storedProc = container.getScripts().getStoredProcedure(definition.getId()).read();
logger.info("found stored proc");
return storedProc;
}
catch (CosmosException e){
logger.info("stored proc not found, creating....");
return container.getScripts().createStoredProcedure(definition);
}
}
I have a test that pass on my local machine. Also its pass on GitHub Actions Pipeline. But on my Jenkins its failed.
My QuarkusTestResourceLifecycleManager
public class Initializer implements QuarkusTestResourceLifecycleManager {
private static final String MARIADB_VERSION = "10.5.16";
private MariaDBContainer mariaDBContainer;
private static final Logger LOGGER = Logger.getLogger(Initializer.class);
#Override
public Map<String, String> start() {
LOGGER.info("Starting MariaDB v"+MARIADB_VERSION+" Test container");
this.mariaDBContainer = new MariaDBContainer("mariadb:"+MARIADB_VERSION)
.withDatabaseName("test")
.withUsername("test")
.withPassword("test");
this.mariaDBContainer.start();
return configurationParamters();
}
private Map<String, String> configurationParamters() {
return Map.of(
"quarkus.datasource.url", mariaDBContainer.getJdbcUrl(),
"quarkus.datasource.username", mariaDBContainer.getUsername(),
"quarkus.datasource.password", mariaDBContainer.getPassword()
);
}
#Override
public void stop() {
LOGGER.info("Stopping MariaDB Test container");
if (this.mariaDBContainer != null) {
this.mariaDBContainer.stop();
}
}
}
And my Testclass
#QuarkusTest
#QuarkusTestResource(Initializer.class)
class AuthenticatedUserDtoResourceTest {
#Inject
UserService userService;
#Test
void createUser() {
userService.createDummyUser();
Jenkins Logs
AuthenticatedUserDtoResourceTest > initializationError FAILED
java.lang.RuntimeException at QuarkusTestExtension.java:698
Caused by: java.lang.reflect.InvocationTargetException at DirectMethodHandleAccessor.java:119
Caused by: java.util.concurrent.CompletionException at CompletableFuture.java:315
Caused by: java.lang.RuntimeException at TestResourceManager.java:467
Caused by: java.lang.IllegalStateException at RyukResourceReaper.java:132
My Jenkins runs inside a Docker Container, I think because of that and the fact that my Testcontainer DB is also a Docker Container, some crazy Docker in Docker staff happens.
Any Idea how to solve it?
I have a Micronaut application that uses Micrometer to report metrics to InfluxDB with the micronaut-micrometer project. Currently it is using the Statsd Registry provided via the io.micronaut.configuration:micronaut-micrometer-registry-statsd dependency.
I would like to instead output metrics in Influx Line Protocol (ILP), but the micronaut-micrometer project does not offer an Influx Registry currently. I tried to work around this by importing the io.micrometer:micrometer-registry-influx dependency and configuring an InfluxMeterRegistry manually like this:
#Factory
public class MyMetricRegistryConfigurer implements MeterRegistryConfigurer {
#Bean
#Primary
#Singleton
public MeterRegistry getMeterRegistry() {
InfluxConfig config = new InfluxConfig() {
#Override
public Duration step() {
return Duration.ofSeconds(10);
}
#Override
public String db() {
return "metrics";
}
#Override
public String get(String k) {
return null; // accept the rest of the defaults
}
};
return new InfluxMeterRegistry(config, Clock.SYSTEM);
}
#Override
public boolean supports(MeterRegistry meterRegistry) {
return meterRegistry instanceof InfluxMeterRegistry;
}
}
When the application runs, the metrics are exposed on my /metrics endpoint as I would expect, but nothing gets written to InfluxDB. I confirmed that my local InfluxDB accepts metrics at the expected localhost:8086/write?db=metrics endpoint using curl. Can anyone give me some pointers to get this working? I'm wondering if I need to manually define a reporter somewhere...
After playing around for a bit, I got this working with the following code:
#Factory
public class InfluxMeterRegistryFactory {
#Bean
#Singleton
#Requires(property = MeterRegistryFactory.MICRONAUT_METRICS_ENABLED, value =
StringUtils.TRUE, defaultValue = StringUtils.TRUE)
#Requires(beans = CompositeMeterRegistry.class)
public InfluxMeterRegistry getMeterRegistry() {
InfluxConfig config = new InfluxConfig() {
#Override
public Duration step() {
return Duration.ofSeconds(10);
}
#Override
public String db() {
return "metrics";
}
#Override
public String get(String k) {
return null; // accept the rest of the defaults
}
};
return new InfluxMeterRegistry(config, Clock.SYSTEM);
}
}
I also noticed that an InfluxMeterRegistry will be available out of the box in the future for micronaut-micrometer as of v1.2.0.
I've been experiencing troubles with spring-boot consumer. I compared the work of two consumers.
First consumer:
import com.rabbitmq.client.*;
import java.io.IOException;
public class Recv {
private final static String QUEUE_NAME = "hello";
public static void main(String[] argv) throws Exception {
ConnectionFactory factory = new ConnectionFactory();
factory.setHost("localhost");
Connection connection = factory.newConnection();
Channel channel = connection.createChannel();
System.out.println(" [*] Waiting for messages. To exit press CTRL+C");
Consumer consumer = new DefaultConsumer(channel) {
#Override
public void handleDelivery(String consumerTag, Envelope envelope,
AMQP.BasicProperties properties, byte[] body) throws IOException {
}
};
channel.basicConsume(QUEUE_NAME, true, consumer);
}
}
Second consumer:
#Controller
public class Consumer {
#RabbitListener(queues = "hello")
public void processMessage(Message message) {
}
}
There are no config files for spring-boot consumer installed, everything goes by default.
On my computer first one works 10 times faster. What might be the problem?
The default prefetch (basicQos) for Spring AMQP consumers is 1 which means only 1 message is outstanding at the consumer at any one time; configure the rabbitListenerContainerFactory #Bean to set the prefetchCount to something larger.
You will have to override the default boot-configured #Bean.
I have a problem about the mbeans. I have created a simple mbean and I have registered it on the default mBeanServer that is run (Via eclipse or java -jar mbean.jar) and in the same process if I try to fouund the mbean registered with a simple query:
for (ObjectInstance instance : mbs.queryMBeans(ObjectNameMbean, null)) {
System.out.println(instance.toString());
}
the query retuerns my mbean, but if I start another process and try to search this mbean registered the mbeas is not found! why?
The approch is : (Process that is running)
public static void main(String[] args) throws Exception
{
MBeanServer mbeanServer =ManagementFactory.getPlatformMBeanServer();
ObjectName objectName = new ObjectName(ObjectNameMbean);
Simple simple = new Simple (1, 0);
mbeanServer.registerMBean(simple, objectName);
while (true)
{
wait (Is this necessary?)
}
}
So this is the first process that is running (that has the only pourpose to registry the mbean, because there is another process that want to read these informations.
So I start another process to search this mbean but nothing.
I 'm not using jboss but the local Java virtual Machine but my scope is to deploy this simple application in one ejb (autostart) and another ejb will read all informations.
All suggestions are really apprecciated.
This example should be more useful :
Object Hello:
public class Hello implements HelloMBean {
public void sayHello() {
System.out.println("hello, world");
}
public int add(int x, int y) {
return x + y;
}
public String getName() {
return this.name;
}
public int getCacheSize() {
return this.cacheSize;
}
public synchronized void setCacheSize(int size) {
this.cacheSize = size;
System.out.println("Cache size now " + this.cacheSize);
}
private final String name = "Reginald";
private int cacheSize = DEFAULT_CACHE_SIZE;
private static final int DEFAULT_CACHE_SIZE = 200;
}
Interface HelloBean (implemented by Hello)
public interface HelloMBean {
public void sayHello();
public int add(int x, int y);
public String getName();
public int getCacheSize();
public void setCacheSize(int size);
}
Simple Main
import java.lang.management.ManagementFactory;
import java.util.logging.Logger;
import javax.management.MBeanServer;
import javax.management.ObjectName;
public class Main {
static Logger aLog = Logger.getLogger("MBeanTest");
public static void main(String[] args) {
try{
MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
ObjectName name = new ObjectName("ApplicationDomain:type=Hello");
Hello mbean = new Hello();
mbs.registerMBean(mbean, name);
// System.out.println(mbs.getAttribute(name, "Name"));
aLog.info("Waiting forever...");
Thread.sleep(Long.MAX_VALUE);
}
catch(Exception x){
x.printStackTrace();
aLog.info("exception");
}
}
}
So now I have exported this project as jar file and run it as "java -jar helloBean.jar" and by eclipse I have modified the main class to read informations of this read (Example "Name" attribute) by using the same objectname used to registry it .
Main to read :
public static void main(String[] args) {
try{
MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
ObjectName name = new ObjectName("ApplicationDomain:type=Hello");
System.out.println(mbs.getAttribute(name, "Name"));
}
catch(Exception x){
x.printStackTrace();
aLog.info("exception");
}
}
But nothing, the bean is not found.
Project link : here!
Any idea?
I suspect the issue here is that you have multiple MBeanServer instances. You did not mention how you acquired the MBeanServer in each case, but in your second code sample, you are creating a new MBeanServer instance which may not be the same instance that other threads are reading from. (I assume this is all in one JVM...)
If you are using the platform agent, I recommend you acquire the MBeanServer using the ManagementFactory as follows:
MBeanServer mbs = java.lang.management.ManagementFactory.getPlatformMBeanServer() ;
That way, you will always get the same MBeanServer instance.