if

The "if" interceptor supports conditional execution of a group of executors.

Note that this is a draft implementation only: Design decisions are still pending.

'evaluate condition only once': Should the condition be reevaluated once response handling has begun?
'evaluate condition always during request handling already' (even when 'if' is nested in 'response')
What happens to ABORT handling of interceptor A in <request><if test="..."></if></response>

Can be used in:

serviceProxy, api, stompProxy, swaggerProxy, if, registration, wsStompReassembler, interceptor, bean, internalProxy, transport and soapProxy

Attributes

Name	Required	Default	Description	Example
test	true	-	the condition to be tested	exc.request.header.userAgentSupportsSNI
language	false	groovy	the language of the 'test' condition	SpEL, groovy

Child Elements

Elements	Description	Cardinality
response		0..*
request		0..*
abort		0..*

Other optional Child Elements

wsdlRewriter, headerFilter, switch, accessControl, index, return, userFeature, http2xml, gatekeeper, oauth2PermissionChecker, regExReplacer, webServer, jsonPointerExtractor, json2Xml, adminConsole, xml2Json, apiKey, oauth2Resource, jwtAuth, cache, oauth2authserver, xenAuthentication, acmeHttpChallenge, analyser, reverseProxying, graphQLProtection, validator, clamav, wsdlPublisher, greaser, statisticsProvider, log, setProperty, APIsJSON, webSocket, soap2Rest, groovyTemplate, wadlRewriter, routerIpResolver, statisticsJDBC, prometheus, setHeader, swaggerRewriter, static, urlNormalizer, openTelemetry, interceptor, soapOperationExtractor, shadowing, basicAuthentication, authHead2Body, ruleMatching, rest2Soap, javascript, balancer, accessLog, apiDocs, if, kubernetesValidation, sampleSoapService, rewriter, clusterNotification, rateLimiter, login, swaggerApiKeyRequirer, requireAuth, spdy, statisticsCSV, accountRegistration, tcp, flowInitiator, counter, paddingHeader, transform, methodOverride, tokenValidator, soapStackTraceFilter, logContext, formValidation, apiKeyChecker, shutdown, xpathExtractor, limit, apiManagement, xmlContentFilter, beautifier, replace, template, xmlProtection, exchangeStore, throttle, testService, jsonProtection, stompClient, oauth2Resource2, ntlm, webServiceExplorer, httpClient, groovy, dispatching