Ostara is a cross-platform desktop app for managing and monitoring Spring Boot applications using the Actuator API, providing comprehensive insights and effortless control.
Ostara cannot load logfile data from one of our application. The logfile tab shows the error:
Error loading data. Could not load logfile from actuator.
The application configured correctly, logfile endpoint works in browser. The application log contains the following errors related to Ostara requests:
Resolved [org.springframework.web.HttpMediaTypeNotAcceptableException: Could not find acceptable representation]
As I understand the problem occurs because Ostara does not use "Accept" header for logfile requests. Our application sets "ContentNegotiationConfigurer#defaultContentType" parameter to MediaType.APPLICATION_JSON and this type is used if "Accept" header is missing.
Stacktrace:
org.springframework.web.HttpMediaTypeNotAcceptableException: Could not find acceptable representation
at org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodProcessor.writeWithMessageConverters(AbstractMessageConverterMethodProcessor.java:249)
at org.springframework.web.servlet.mvc.method.annotation.RequestResponseBodyMethodProcessor.handleReturnValue(RequestResponseBodyMethodProcessor.java:183)
at org.springframework.web.method.support.HandlerMethodReturnValueHandlerComposite.handleReturnValue(HandlerMethodReturnValueHandlerComposite.java:78)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:135)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:895)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:808)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)
...
Expected Behavior
Logfile data is loaded correctly.
Current Behavior
The logfile tab shows the error "Could not load logfile from actuator".
Steps to Reproduce
Create an application with ContentNegotiationConfigurer#defaultContentType parameter.
Ostara cannot load logfile data from one of our application. The logfile tab shows the error:
The application configured correctly, logfile endpoint works in browser. The application log contains the following errors related to Ostara requests:
As I understand the problem occurs because Ostara does not use "Accept" header for logfile requests. Our application sets "ContentNegotiationConfigurer#defaultContentType" parameter to
MediaType.APPLICATION_JSON
and this type is used if "Accept" header is missing.Stacktrace:
Expected Behavior
Logfile data is loaded correctly.
Current Behavior
The logfile tab shows the error "Could not load logfile from actuator".
Steps to Reproduce
ContentNegotiationConfigurer#defaultContentType
parameter.Possible Solution
Add "Accept" header for logfile requests.
Environment