[fixes #426] made GraphQLSpringServerWebExchangeContext public

[bsara]

made GraphQLSpringServerWebExchangeContext public rather than internal so that it can be referenced by dependent projects

fixes #426

[bsara]

@oliemansm I can't find in that huge log file why the tests failed in that one check. It seems strange that they would fail too given how minor the change is that I made. Also, this all run successfully locally for me...but I'm running MacOS, not Windows.

[BlasiusSecundus]

@bsara, the failure has nothing to do with your PR - one of the subscrption-related tests failed because of a timeout (perhaps it was running a bit slowly on the pipeline):

Testing reset > Should work if subscription was stopped. FAILED
    org.opentest4j.AssertionFailedError: Could not initialize test subscription client. No subscription defined?
        at org.junit.jupiter.api.AssertionUtils.fail(AssertionUtils.java:43)
        at org.junit.jupiter.api.Assertions.fail(Assertions.java:129)
        at com.graphql.spring.boot.test.GraphQLTestSubscription.init(GraphQLTestSubscription.java:108)
        at com.graphql.spring.boot.test.GraphQLTestSubscription.init(GraphQLTestSubscription.java:92)
        at com.graphql.spring.boot.test.GraphQLTestSubscription.start(GraphQLTestSubscription.java:139)
        at com.graphql.spring.boot.test.GraphQLTestSubscription.start(GraphQLTestSubscription.java:127)
        at com.graphql.spring.boot.test.GraphQLTestSubscriptionResetTest.shouldWorkIfSubscriptionWasAlreadyStopped(GraphQLTestSubscriptionResetTest.java:43)

        Caused by:
        javax.websocket.DeploymentException: The HTTP request to initiate the WebSocket connection to [ws://localhost:50187/subscriptions] failed
            at org.apache.tomcat.websocket.WsWebSocketContainer.connectToServerRecursive(WsWebSocketContainer.java:493)
            at org.apache.tomcat.websocket.WsWebSocketContainer.connectToServer(WsWebSocketContainer.java:197)
            at com.graphql.spring.boot.test.GraphQLTestSubscription.initClient(GraphQLTestSubscription.java:367)
            at com.graphql.spring.boot.test.GraphQLTestSubscription.init(GraphQLTestSubscription.java:106)
            ... 4 more

            Caused by:
            java.util.concurrent.TimeoutException: The HTTP upgrade to WebSocket failed but partial data may have been received: Status Code [0], HTTP headers [{}]
                at org.apache.tomcat.websocket.WsWebSocketContainer.processResponse(WsWebSocketContainer.java:816)
                at org.apache.tomcat.websocket.WsWebSocketContainer.connectToServerRecursive(WsWebSocketContainer.java:358)
                ... 7 more

                Caused by:
                java.util.concurrent.TimeoutException
                    at java.base/sun.nio.ch.PendingFuture.get(PendingFuture.java:195)
                    at org.apache.tomcat.websocket.WsWebSocketContainer.processResponse(WsWebSocketContainer.java:813)
                    ... 8 more

A maintainer e. g. @oliemansm can re-run jobs. And maybe that GraphQLTestSubscription needs one more fix...

[oliemansm]

Thanks @bsara. Merged it since the build failure isn't caused by your change anyway. It sometimes just fails one of the builds and next time it runs just fine. Could be improved a bit.