/**
* check the top level component/app and get dependencies.
*
* <p>This routine checks to see that we have a valid top level component. If our top level
* component is out of sync, we have to ignore it here, but we _must_ force the client to not
* cache the response.
*
* <p>If there is a QFE, we substitute the QFE descriptor for the one given us, and continue.
* Again, we cannot allow caching.
*
* <p>Finally, if there is no descriptor given, we simply ignore the request and give them an
* empty response. Which is done here by returning null.
*
* <p>Also note that this handles the 'if-modified-since' header, as we want to tell the browser
* that nothing changed in that case.
*
* @param request the request (for exception handling)
* @param response the response (for exception handling)
* @param context the context to get the definition.
* @return the set of descriptors we are sending back, or null in the case that we handled the
* response.
* @throws IOException if there was an IO exception handling a client out of sync exception
* @throws ServletException if there was a problem handling the out of sync
*/
@Override
public Set<DefDescriptor<?>> verifyTopLevel(
HttpServletRequest request, HttpServletResponse response, AuraContext context)
throws IOException {
DefDescriptor<? extends BaseComponentDef> appDesc = context.getApplicationDescriptor();
MasterDefRegistry mdr = context.getDefRegistry();
context.setPreloading(true);
if (appDesc == null) {
//
// This means we have nothing to say to the client, so the response is
// left completely empty.
//
return null;
}
long ifModifiedSince = request.getDateHeader(HttpHeaders.IF_MODIFIED_SINCE);
String uid = context.getUid(appDesc);
try {
try {
definitionService.updateLoaded(appDesc);
if (uid != null && ifModifiedSince != -1) {
//
// In this case, we have an unmodified descriptor, so just tell
// the client that.
//
response.sendError(HttpServletResponse.SC_NOT_MODIFIED);
return null;
}
} catch (ClientOutOfSyncException coose) {
//
// We can't actually handle an out of sync here, since we are doing a
// resource load. We have to ignore it, and continue as if nothing happened.
// But in the process, we make sure to set 'no-cache' so that the result
// is thrown away. This may actually not give the right result in bizarre
// corner cases... beware cache inconsistencies on revert after a QFE.
//
// We actually probably should do something different, like send a minimalist
// set of stuff to make the client re-try.
//
this.setNoCache(response);
String oosUid = mdr.getUid(null, appDesc);
return mdr.getDependencies(oosUid);
}
} catch (QuickFixException qfe) {
//
// A quickfix exception means that we couldn't compile something.
// In this case, we still want to preload things, but we want to preload
// quick fix values, note that we force NoCache here.
//
this.setNoCache(response);
this.handleServletException(qfe, true, context, request, response, true);
return null;
}
this.setLongCache(response);
if (uid == null) {
uid = context.getUid(appDesc);
}
return mdr.getDependencies(uid);
}
/** Start a context and set up default values. */
protected AuraContext setupContext(
Mode mode, Format format, DefDescriptor<? extends BaseComponentDef> desc)
throws QuickFixException {
ContextService contextService = Aura.getContextService();
AuraContext ctxt =
contextService.startContext(mode, format, Authentication.AUTHENTICATED, desc);
ctxt.setFrameworkUID(Aura.getConfigAdapter().getAuraFrameworkNonce());
String uid = ctxt.getDefRegistry().getUid(null, desc);
ctxt.addLoaded(desc, uid);
return ctxt;
}
@SuppressWarnings("unchecked")
private List<DefDescriptor<FlavoredStyleDef>> getDefs() {
AuraContext context = Aura.getContextService().getCurrentContext();
MasterDefRegistry mdr = context.getDefRegistry();
List<DefDescriptor<FlavoredStyleDef>> defs = new ArrayList<>();
for (DefDescriptor<?> dd : mdr.find(filter)) {
// currently getBundle will only work with file-based, unless the other loaders also set the
// bundle
if (dd.getDefType() == DefType.FLAVORED_STYLE && dd.getBundle().getName().equals(bundle)) {
defs.add((DefDescriptor<FlavoredStyleDef>) dd);
}
}
return defs;
}
private void loadTestMocks(AuraContext context, boolean doReset, Collection<Definition> mocks) {
// TODO: fix error handling
if (mocks == null || mocks.isEmpty()) {
return;
}
boolean error = false;
MasterDefRegistry registry = context.getDefRegistry();
for (Definition def : mocks) {
try {
if (doReset && def instanceof Resettable) {
((Resettable) def).reset();
}
registry.addLocalDef(def);
} catch (Throwable t) {
LOG.error("Failed to add mock " + def, t);
error = true;
}
}
if (error) {
Aura.get(TestContextAdapter.class).release();
}
}
@Override
public void serialize(Json json, AuraContext ctx) throws IOException {
json.writeMapBegin();
json.writeMapEntry("mode", ctx.getMode());
DefDescriptor<? extends BaseComponentDef> appDesc = ctx.getApplicationDescriptor();
if (appDesc != null) {
if (appDesc.getDefType().equals(DefType.APPLICATION)) {
json.writeMapEntry(
"app", String.format("%s:%s", appDesc.getNamespace(), appDesc.getName()));
} else {
json.writeMapEntry(
"cmp", String.format("%s:%s", appDesc.getNamespace(), appDesc.getName()));
}
}
if (ctx.getSerializeThemes()) {
ThemeList themes = ctx.getThemeList();
if (!themes.isEmpty()) {
List<String> stringed = Lists.newArrayList();
for (DefDescriptor<ThemeDef> theme : themes) {
stringed.add(theme.getQualifiedName());
}
json.writeMapEntry("themes", stringed);
}
Optional<String> dynamicVarsUid = themes.getActiveDynamicVarsUid();
if (dynamicVarsUid.isPresent()) {
json.writeMapEntry("dynamicVarsUid", dynamicVarsUid.get());
}
}
if (ctx.getRequestedLocales() != null) {
List<String> locales = new ArrayList<>();
for (Locale locale : ctx.getRequestedLocales()) {
locales.add(locale.toString());
}
json.writeMapEntry("requestedLocales", locales);
}
Map<String, String> loadedStrings = Maps.newHashMap();
Map<DefDescriptor<?>, String> clientLoaded = Maps.newHashMap();
clientLoaded.putAll(ctx.getClientLoaded());
for (Map.Entry<DefDescriptor<?>, String> entry : ctx.getLoaded().entrySet()) {
loadedStrings.put(
String.format(
"%s@%s", entry.getKey().getDefType().toString(), entry.getKey().getQualifiedName()),
entry.getValue());
clientLoaded.remove(entry.getKey());
}
if (forClient) {
for (DefDescriptor<?> deleted : clientLoaded.keySet()) {
loadedStrings.put(
String.format("%s@%s", deleted.getDefType().toString(), deleted.getQualifiedName()),
DELETED);
}
}
if (loadedStrings.size() > 0) {
json.writeMapKey("loaded");
json.writeMap(loadedStrings);
}
if (ctx.getSerializeLastMod()) {
json.writeMapEntry("lastmod", Long.toString(AuraBaseServlet.getLastMod()));
}
TestContextAdapter testContextAdapter = Aura.get(TestContextAdapter.class);
if (testContextAdapter != null) {
TestContext testContext = testContextAdapter.getTestContext();
if (testContext != null) {
json.writeMapEntry("test", testContext.getName());
}
}
if (ctx.getFrameworkUID() != null) {
json.writeMapEntry("fwuid", ctx.getFrameworkUID());
}
if (forClient) {
// client needs value providers, urls don't
boolean started = false;
for (GlobalValueProvider valueProvider : ctx.getGlobalProviders().values()) {
if (!valueProvider.isEmpty()) {
if (!started) {
json.writeMapKey("globalValueProviders");
json.writeArrayBegin();
started = true;
}
json.writeComma();
json.writeIndent();
json.writeMapBegin();
json.writeMapEntry("type", valueProvider.getValueProviderKey().getPrefix());
json.writeMapEntry("values", valueProvider.getData());
json.writeMapEnd();
}
}
if (started) {
json.writeArrayEnd();
}
//
// Now comes the tricky part, we have to serialize all of the definitions that are
// required on the client side, and, of all types. This way, we won't have to handle
// ugly cases of actual definitions nested inside our configs, and, we ensure that
// all dependencies actually get sent to the client. Note that the 'loaded' set needs
// to be updated as well, but that needs to happen prior to this.
//
Map<DefDescriptor<? extends Definition>, Definition> defMap;
defMap = ctx.getDefRegistry().filterRegistry(ctx.getPreloadedDefinitions());
if (defMap.size() > 0) {
List<Definition> componentDefs = Lists.newArrayList();
List<Definition> eventDefs = Lists.newArrayList();
List<Definition> libraryDefs = Lists.newArrayList();
for (Map.Entry<DefDescriptor<? extends Definition>, Definition> entry :
defMap.entrySet()) {
DefDescriptor<? extends Definition> desc = entry.getKey();
DefType dt = desc.getDefType();
Definition d = entry.getValue();
//
// Ignore defs that ended up not being valid. This is arguably something
// that the MDR should have done when filtering.
//
if (d != null) {
if (DefType.COMPONENT.equals(dt) || DefType.APPLICATION.equals(dt)) {
componentDefs.add(d);
} else if (DefType.EVENT.equals(dt)) {
eventDefs.add(d);
} else if (DefType.LIBRARY.equals(dt)) {
libraryDefs.add(d);
}
}
}
writeDefs(json, "componentDefs", componentDefs);
writeDefs(json, "eventDefs", eventDefs);
writeDefs(json, "libraryDefs", libraryDefs);
}
ctx.serializeAsPart(json);
}
json.writeMapEnd();
}