HTTP context not available for Async call

[Sivakumar Raja]

Hi everyone,
    I'm making a web service call. In the case of 200 OK, I need to fetch some additional data based on the response got from the first WS call and return back the final result as JSON, during this process I am making one more web service call which run on the context of currentHttp and it's getting failed. Please suggest me a way to resolve this issue.

   
   public CompletionStage<Result> handleRequest() {
        ObjectNode body = Json.newObject();
        body.put("key", value);

        return wsClient.url(serviceUri)
                .setContentType("application/json")
                .post(body)
                .thenApply(this::handleWsResponse)
                .exceptionally(e -> {
                    Logger.error("Exception", e);
                    return internalServerError();
                });
    }

    private Result handleWsResponse(WSResponse wsResponse) {
       if(wsResponse.getStatus() == Http.Status.OK) {
            try {
                return processData(wsResponse);
            } catch (InterruptedException | TimeoutException | ExecutionException e) {
                Logger.error("Exception e", e);
                return internalServerError();
            }
        } else {
            return new Result(wsResponse.getStatus());
        }
    }

    private Result processData(WSResponse wsResponse) throws InterruptedException, ExecutionException, TimeoutException {
        return CompletableFuture.supplyAsync(() -> wsResponse)
                .thenApply(WSResponse::asJson)
                .thenComposeAsync(this::fetchResponse, httpExecutionContext.current())
                .thenApply(Results::ok)
                .get(2, TimeUnit.SECONDS);   // Error: java.lang.RuntimeException: There is no HTTP Context available from here.
    }

Thanks,

Sivakumar

[Igmar Palsenberg]

See https://www.playframework.com/documentation/2.6.x/JavaAsync#using-httpexecutioncontext

You need to supply the proper execution context in the async block.

Igmar 

[Sivakumar Raja]

Igmar, thanks for the suggestion. It works.

Sivakumar