protected void doPost()

in src/main/java/org/apache/sling/servlets/post/impl/SlingPostServlet.java [227:284]
47 lines of code
10 McCabe index (conditional complexity)

    protected void doPost(final SlingHttpServletRequest request,
            final SlingHttpServletResponse response) throws IOException {
        final VersioningConfiguration localVersioningConfig = createRequestVersioningConfiguration(request);

        request.setAttribute(VersioningConfiguration.class.getName(), localVersioningConfig);

        // prepare the response
        final PostResponse htmlResponse = createPostResponse(request);
        htmlResponse.setReferer(request.getHeader("referer"));

        final PostOperation operation = getSlingPostOperation(request);
        if (operation == null) {

            htmlResponse.setStatus(
                HttpServletResponse.SC_INTERNAL_SERVER_ERROR,
                "Invalid operation specified for POST request");

        } else {
            request.getRequestProgressTracker().log(
                    "Calling PostOperation: {0}", operation.getClass().getName());
            final SlingPostProcessor[] processors = this.cachedPostProcessors;
            try {
                operation.run(request, htmlResponse, processors);
            } catch (ResourceNotFoundException rnfe) {
                htmlResponse.setStatus(HttpServletResponse.SC_NOT_FOUND,
                    rnfe.getMessage());
            } catch (final PreconditionViolatedPersistenceException e) {
                logPersistenceException(request, operation, e);
                if (backwardsCompatibleStatuscode) {
                    htmlResponse.setError(e);
                } else {
                    htmlResponse.setStatus(422, "invalid payload");
                }
            } catch (final PersistenceException e) {
                // also catches the  RetryableOperationException, as the handling is the same
                logPersistenceException(request, operation, e);
                if (backwardsCompatibleStatuscode) {
                    htmlResponse.setError(e);
                } else {
                    htmlResponse.setStatus(HttpServletResponse.SC_CONFLICT, "repository state conflicting with request");
                }
            } catch (final Exception e) {
                log.warn("Exception while handling POST on path [{}] with operation [{}]",
                        request.getResource().getPath(),operation.getClass().getName(),e);
                htmlResponse.setError(e);
            }
        }

        // check for redirect URL if processing succeeded
        if (htmlResponse.isSuccessful()) {
            if (redirectIfNeeded(request, htmlResponse, response)) {
                return;
            }
        }

        // create a html response and send if unsuccessful or no redirect
        htmlResponse.send(response, isSetStatus(request));
    }