Package ca.uhn.fhir.jpa.interceptor

Class UserRequestRetryVersionConflictsInterceptor

java.lang.Object

ca.uhn.fhir.jpa.interceptor.UserRequestRetryVersionConflictsInterceptor

public class UserRequestRetryVersionConflictsInterceptor
extends Object

This interceptor looks for a header on incoming requests called X-Retry-On-Version-Conflict and if present, it will instruct the server to automatically retry JPA server operations that would have otherwise failed with a ResourceVersionConflictException (HTTP 409).

The format of the header is:
X-Retry-On-Version-Conflict: retry; max-retries=100

Field Summary

Fields

Modifier and Type	Field	Description
static String	HEADER_NAME
static String	MAX_RETRIES
static String	RETRY

Constructor Summary

Constructors

Constructor	Description
UserRequestRetryVersionConflictsInterceptor()

Method Summary

Modifier and Type	Method	Description
static void	addRetryHeader(SystemRequestDetails theRequestDetails, int theMaxRetries)	Convenience method to add a retry header to a system request
ResourceVersionConflictResolutionStrategy	check(ca.uhn.fhir.rest.api.server.RequestDetails theRequestDetails)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

HEADER_NAME

public static final String HEADER_NAME

See Also:

Constant Field Values

MAX_RETRIES

public static final String MAX_RETRIES

See Also:

Constant Field Values

RETRY

public static final String RETRY

See Also:

Constant Field Values

Constructor Details

UserRequestRetryVersionConflictsInterceptor

public UserRequestRetryVersionConflictsInterceptor()

Method Details

check

public ResourceVersionConflictResolutionStrategy check(ca.uhn.fhir.rest.api.server.RequestDetails theRequestDetails)

addRetryHeader

public static void addRetryHeader(SystemRequestDetails theRequestDetails,
 int theMaxRetries)

Convenience method to add a retry header to a system request