We are trying to debug some issues with EhCache and we are unsure what configuration is being used. Is there a way to export or advice on debugging an EhCache configuration?
You can output the full Ehcache configuration using a little bit of Java code. Just get a reference to your active cache manager by name. (The name should be in your ehcache.xml)
CacheManager mgr = CacheManager.getCacheManager("my-cache-manager");
System.out.println(mgr.getActiveConfigurationText());
This will output the current configuration to the log/console.
Related
I would like to disable the rabbit health check in my default RabbitMockConfiguration.
We have a Configuration that is imported via #Import. Unfortunately the Configuration does not prevent the health check from being added to the health indicator as that happens once spring-rabbit is in the classpath.
We have the workaround, that we add a properties file in every service using that Configuration, which disables the property management.health.rabbit.enabled, but for us it would be much nicer to be able to disable that heathcheck on configuration level.
I thought about the tests with #TestPropertySource(properties = ["management.health.rabbit.enabled=false"]), but I could not find an equivalent to use for the a #Configuration, as #PropertySource expects a location for a properties file and does not accept single properties.
Any idea what we can do?
Spring boot version: 2.2.4
Spring amqp version: 2.2.3
Spring Version: 5.2.3
If you want to change the behaviour of the health check, I'd rather override the health check so that it states Rabbit is in mock mode.
To do so, just create a HealthIndicator bean named rabbitHealthIndicator:
#Bean
public HealthIndicator rabbitHealthIndicator() {
return () -> Health.up().withDetail("version", "mock").build();
}
This has the effect of switching the production one and exposes the fact the app is running with a mock.
I guess you should add 'ApplicationListener' and add the implementation to 'src/main/resources/META-INF/spring.factories' to your module with MockReddisConfiguration. This is described in more detail here
I am running hibernate search with spring boot. I have written a working configuration for my application. How ever, i want to externalize my configuration and use ./config/hibernate.properties instead of src/main/resources/hibernate.properties. After copying my properties file to the desired location, i am getting and exception:
nested exception is java.io.FileNotFoundException: class path resource [hibernate.properties] cannot be opened because it does not exist
Anyone with any idea on how i should tell spring to read my configuration file?
Move your configuration to an src/main/resources/application.properties file and prepend spring.jpa.properties. everywhere, so hibernate.dialect will become spring.jpa.properties.hibernate.dialect, for example.
Then you can use Spring features to move your configuration wherever you want. To move it to ./config/application.properties I suppose you will have to add #PropertySource("./config/application.properties") to one of your #Configuration classes, or something similar.
I'm sure you can also keep the hibernate configuration in a separate file (separate from the rest of your application configuration).
See https://docs.spring.io/spring-boot/docs/current/reference/html/boot-features-external-config.html for more details about externalizing configuration in Spring Boot.
For some reason, it seems hibernate-search will prevent application from starting as long as a hibernate.properties configuration file does not exist. After trying for a while without success, i found a work around for my problem.
First, i created an empty hibernate.properties file and place it under src/main/resources.
Secondly, i moved all hibernate-search configurations to application.properties as follows:
spring.jpa.properties.hibernate.search.default.indexmanager = elasticsearch
spring.jpa.properties.hibernate.search.default.elasticsearch.host = http://my-server.com
spring.jpa.properties.hibernate.search.default.elasticsearch.index_schema_management_strategy = CREATE
spring.jpa.properties.hibernate.search.default.elasticsearch.required_index_status = yellow
This way, the application will start and spring will get all configuration from the externalized configuration as documented here.
I'm using Spring Boot 2.0.3 release. I want to increase the maximum pool size of HikariCP which is 10 by default.
I tried changing it in applicaiton.properties with
spring.datasource.hikari.maximum-pool-size=200
but it is not working because in the logs it still show that max pool size is 10.
The reason I want to change is because I am somehow reaching that limit in staging and I have no idea what's causing it.
I faced similar issue recently (Spring Boot v2.1.3). Posting it here in case people bump into the same scenario.
Long story short: if you're initializing DataSource using #ConfigurationProperties, those properties don't seem to require hikari prefix for maximum-pool-size, unless I'm missing something. So spring.datasource.maximum-pool-size should work if you use #ConfigurationProperties(prefix = "spring.datasource").
Details: In my case I'm initializing DataSource myself using org.springframework.boot.jdbc.DataSourceBuilder, so that I could later use it in org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean:
#Bean
#Primary
#ConfigurationProperties(prefix = "spring.datasource")
public DataSource primaryDataSource()
{
return DataSourceBuilder.create().build();
}
In this case property spring.datasource.hikari.maximum-pool-size taken from Common App Properties section in Spring Boot doc did not help. Neither did suggested above maximumPoolSize.
So I went and debugged Spring Boot code which lead me to org.springframework.boot.context.properties.bind.JavaBeanBinder and it's method bind. Value for property name for HikariDataSource setter setMaximumPoolSize was "maximum-pool-size", so just for sake of testing I renamed my property to be spring.datasource.maximum-pool-size and it finally worked.
Hope it helps. Please let me know in the comments if I missed something or took wrong path. Thanks!
As per HikariCP Github README it's maximumPoolSize so try using:
spring.datasource.hikari.maximumPoolSize = 200
But this will work only if you allow Spring Boot to create the DataSource. If you create the DataSource yourself Spring Boot properties have no effect.
Do note that 200 is a very high value that may negatively impact your database as each physical connection requires server resources. In most cases a lower value will yield better performance, see HikariCP wiki: About Pool Sizing.
Recently I migrated to latest spring-boot version(1.4.2) . I observered few of the old properties are more supported.
Old configuration
spring.datasource.max-active=1
spring.datasource.validation-query=/* ping */ SELECT 1
spring.datasource.test-on-borrow=true
spring.datasource.initial-size=1
New Configuration
spring.datasource.dbcp.max-active=1
spring.datasource.dbcp.validation-query=/* ping */ SELECT 1
spring.datasource.dbcp.test-on-borrow=true
spring.datasource.dbcp.initial-size=1
After migrating to the new configuration, My application is still consuming 10 connection which is a default configuration.
What are the additional configuration am I missing?
According to the documentation, by default, Spring boot uses Tomcat JDBC. It is also included by default into spring-boot-starter-jdbc which is included in spring-boot-starter-data-jpa.
We prefer the Tomcat pooling DataSource for its performance and concurrency, so if that is available we always choose it.
Otherwise, if HikariCP is available we will use it.
If neither the Tomcat pooling datasource nor HikariCP are available and if Commons DBCP is available we will use it, but we don’t recommend it in production.
Lastly, if Commons DBCP2 is available we will use it.
This means that you should be using the spring.datasource.tomcat.* properties, for example:
spring.datasource.tomcat.max-active=1
spring.datasource.tomcat.validation-query=/* ping */ SELECT 1
spring.datasource.tomcat.test-on-borrow=true
spring.datasource.tomcat.initial-size=1
Alternatively, if you prefer DBCP, you can do so by defining spring.datasource.type property and provide the fully qualified name of the connection pool implementation. In this case, you'll have to use maxTotal though, because maxActive does not exist according to the documentation of DBCP.
Remember to add the right version of DBCP to your classpath though. If you're adding 1.x, you can use the spring.datasource.dbcp.* properties (like you used), however, if you're using 2.x you should use the spring.datasource.dbcp2.* properties:
# Commons DBCP 1.x
spring.datasource.dbcp.max-total=1
spring.datasource.dbcp.validation-query=/* ping */ SELECT 1
spring.datasource.dbcp.test-on-borrow=true
spring.datasource.dbcp.initial-size=1
spring.datasource.type=org.apache.commons.dbcp.BasicDataSource # To override the default classpath lookup behaviour
# Commons DBCP 2.x
spring.datasource.dbcp2.max-total=1
spring.datasource.dbcp2.validation-query=/* ping */ SELECT 1
spring.datasource.dbcp2.test-on-borrow=true
spring.datasource.dbcp2.initial-size=1
spring.datasource.type=org.apache.commons.dbcp2.BasicDataSource # To override the default classpath lookup behaviour
Setup:
Tomcat 6.0.16
Struts 2.1.6
Apache Commons Logging 1.0.4
Log4J 1.2.17
What I did:
Change in server.xml:
<Context path="/" .../></Context>
to
<Context path="/shop" .../></Context>
The issues:
Everything in the application is working fine (on the first glance). All links are correct and working etc.
Now I discovered that the Loggers using Commons Logging (with Log4J) (usually the Loggers in Spring, Struts and OGNL) are using a different logger configuration than the default used before. Loggers using Log4J directly in the application are working fine with this configuration.
For debugging purpose I have a JSP listing all the loggers with:
Logger.getRootLogger().getLoggerRepository( ).getCurrentLoggers()
But the "commons logging logger" are not listed anymore, although I could verify that they exist if I debug the code.
The question:
How do I find the other configuration/root logger?
Do I have to change anything in the struts configuration (or somewhere else) in relation to the context path change?
Any ideas what the issue might be here?
Edit: I'm getting closer:
The platform I am using is loading a minimal logging at start up. Before changing the context the advanced logging was loaded right afterwards and everything was fine. For some reason the listener of the web.xml (Spring initialization, etc.) is now running before the advanced logging is loaded. These classes are using the apache commons logging api and get loggers assigned basing on the simple root logger. Right afterwards the root logger is replace by the platform but the commons loggers are not updated with the new configuration.
New question:
As I stated below, changing anything in the platform is no option. So why did the listener run earlier when I change the context and how can I prevent this.
For the sake of the moment Apache Tomcat uses JDK logging. If you didn't place commons-logging.properties file to your source dir the default logger using commons logging will be log4j. Anyway the Tomcat will not use that logging because it needs a special configuration to tell it to use log4j.
The root logger is what you use in the log4j configuration. For example
log4j.rootLogger=ERROR,Console
Changing context path is nothing related to the logging used by application.
I didn't see any issue with logging rather that in recent releases regarding implementation priority.
The logging creates a dependency between multiple tomcat web application and due this fact requires a specific order of loading this modules. Renaming the context to "/shop" leads to an other order as StandardContext.filterDefs is a simple HashMap and does not preserve the order of the server.xml.
I could fix my issues in running the required steps in a listener.
web.xml
<listener>
<listener-class>com.[...].InitListener</listener-class>
</listener>
InitListener.java
package com.[...];
public class InitListener
{
static
{
// init Log4J, etc.
}
}
{code}
(Btw. Listener order should be identical to the web.xml)