I have a spring cloud based application that stores the spring session in redis. It is using Spring Boot with embedded tomcat.
When using spring actuator, the /metrics endpoint does not return any valuable information. httpsessions.active is set to 0, and httpsessions.max is set to -1.
I am guessing this is because spring replaces the httpsession implementation with its own spring session implementation.
Is there a way to access this information from some endpoint? preferably using JMX but not mandatory.
Thanks.
I eventually used the following solution, by using a generic username. The endpoint would return all sessions, a simple count would give the total.
http://docs.spring.io/spring-session/docs/current/reference/html5/guides/findbyusername.html
Related
Can Spring Cloud Data Flow be used in Spring5 applications - NOT Spring Boot - my current employer seems to view Spring Boot applications as insecure (I've no idea why) in anyway I'd like to try use this stack for an integration project, so is it possible to use it without Spring Boot?
With Spring Cloud Data Flow you can deploy streams, tasks and batches.
This is all based on Spring, Spring Cloud and Spring Boot. Spring Boot is nothing else as a preconfigured Spring stack.
Spring Data Flow is a runitme that usually needs a cloud infrastructure like Kubernets.
I'm not sure if you really are looking for that or more for something like https://spring.io/projects/spring-integration
I have services built in spring boot 2.0.2. I`m using redis and solrj.
Now if i want to get metrics of redis and solr. It don`t show in
http://localhost:8080/actuator/metrics
Is there any way e.g making custom endpoint to get redis and solr metrics?
Any help would be appreciated..
Yes, it should be possible.
Spring boot 2's default metrics framework is Micrometer
When this framework is integrated into spring boot application (via starter as usual), any metrics reported to micrometer will immediately appear in spring boot actuator.
So the question is whether the redis/solrj integration expose Metrics or not.
If they are not, you'll have to understand what exactly you want to measure and plug in the integration.
Here is the example:
import io.micrometer.core.annotation;
#Timed("my-redis-calls")
public void doSomethingInMyCode() {
//call redis here
}
Of course, there is also a programmatic interface, using annotations in not mandatory
The code shown in Mark Bramnik's answer doesn't specifically give you timing for Redis client calls, it gives you timing for doSomethingInMyCode method, which can be different.
Micrometer support seems to be available in the Lettuce 6.1 release.
MeterRegistry meterRegistry = …;
MicrometerOptions options = MicrometerOptions.create();
ClientResources resources = ClientResources.builder().commandLatencyRecorder(new MicrometerCommandLatencyRecorder(meterRegistry, options)).build();
RedisClient client = RedisClient.create(resources);
https://lettuce.io/core/release/reference/index.html#command.latency.metrics.micrometer
I am just starting with Spring Integration with Spring Boot 2.
I am working on a application which uses Spring Integration's HTTP outbound gateway to consume a Spring boot Service.
I am consuming the spring boot service from Spring Integration application using Gateway.
When I call the Gateway method which in turn will use the outbound gateway to call the spring boot service, the request does not seem to be completed. It is just going on when I make the HTTP GET request via the browser.
The request is also not received by the Spring Boot service.
I am not able to identify what is wrong in my Integration application when using gateway to consume a Spring Boot 2 service.
I have shared my Spring Boot 2 Application and also the Integration application which I am using to consume it in the below github folder. it contains 2 folders, one for the spring Integration application and the other for the spring boot application.
https://github.com/gsamartian/spring-int-demos
I have exposed a REST interface for the Integration application using RestController.
I access the boot application from integration application via the url, http://localhost:8763/callExternalServiceViaGateway
I am able to access the spring boot application directly from its port.
If anyone can help me identify the cause it would be great.
Thanks,
Your problem that the gateway method is without any args:
#Gateway(requestChannel = "get.request.channel", replyChannel = "reply.channel")
String getCustomMessage();
In this case the gateway works as receiving. No any requests is send because nothing to wrap to the payload. See more info on the matter in the Reference Manual.
Right now I see several bugs with the payloadExpression and no arg, so I suggest you to add some String payload arg to the getCustomMessage() gateway method and perform it with an empty string.
Will take a look into the bugs and will fix them soon.
Thank you for a good sample how to catch and reproduce!
https://jira.spring.io/browse/INT-4448
https://jira.spring.io/browse/INT-4449
While doing some practice examples to learn spring security, I come up with some following use case. But I did not find best possible approach using spring security. Could some one please help me on this
I have angularJs application, Spring boot application running on different servers . In redis cache I have user info(role, and some other info) with gsid as key. In each rest call I am passing gsid as cookie. Now I want to validate each request in the Spring security Filter by fetching user info from the redis cache before sending to #Restcontroller.
what could be best approach to authenticate and authorize the request using spring boot security.
Use spring-session with redis, it also provides integration with spring-security.
I am using Spring Boot with Spring Session for storing session data. Users log in to the application with Spring Social. As a result, the saved security context has a SocialAuthenticationToken. This means that other web apps sharing the session data need to use Spring Social and also have access to the social tokens.
What I'd like to do is save the sessionAttr:SPRING_SECURITY_CONTEXT with a token that is available through Spring Security only. Furthermore, I'd like to add a second Redis key for the social information.
Where are the extension points for adding this kind of customization to Spring Session? I would like it to be as unobtrusive as possible.