private void trace(Type type, String id, ModelNode operation) {
if (!trackInvocations) return;
if (Type.BEGIN.equals(type)) {
diagnostics.logRpc(type.getClassifier(), id, System.currentTimeMillis(), getToken(operation));
} else {
diagnostics.logRpc(type.getClassifier(), id, System.currentTimeMillis());
}
}
/**
* @author Heiko Braun
* @date 3/17/11
*/
@SuppressWarnings("GwtClientClassFromNonInheritedModule")
public class DMRHandler implements ActionHandler<DMRAction, DMRResponse> {
private static final String HEADER_CONTENT_TYPE = "Content-Type";
private static final String HEADER_ACCEPT = "Accept";
private static final String DMR_ENCODED = "application/dmr-encoded";
private static final String HEADER_CONNECTION = "Connection";
private static final String KEEP_ALIVE = "Keep-Alive";
/**
* The read resource description supports the following parameters: recursive, proxies,
* operations, inherited plus one not documented: locale. See
* https://docs.jboss.org/author/display/AS72/Global+operations#Globaloperations-readresourcedescription
* for a more detailed description
*/
private static final String[] READ_RESOURCE_DESCRIPTION_OPTIONAL_PARAMETERS =
new String[] {RECURSIVE, PROXIES, OPERATIONS, INHERITED, LOCALE};
private static long idCounter = 0;
private RequestBuilder prb;
private Diagnostics diagnostics = GWT.create(Diagnostics.class);
private boolean trackInvocations = diagnostics.isEnabled();
private DMREndpointConfig endpointConfig = GWT.create(DMREndpointConfig.class);
private ResourceAccessLog resourceLog = ResourceAccessLog.INSTANCE;
private RequestBuilder postRequestBuilder() {
// lazy init, because endpointConfig.getUrl() is not initialized at construction time
if (prb == null) {
prb = new RequestBuilder(RequestBuilder.POST, endpointConfig.getUrl());
prb.setHeader(HEADER_ACCEPT, DMR_ENCODED);
prb.setHeader(HEADER_CONTENT_TYPE, DMR_ENCODED);
prb.setIncludeCredentials(true);
}
return prb;
}
private static native void redirect(String url) /*-{
$wnd.location = url;
}-*/;
private static String getToken(ModelNode operation) {
StringBuffer sb = new StringBuffer();
if (operation.get(OP).asString().equals(COMPOSITE)) {
for (ModelNode step : operation.get(STEPS).asList()) {
sb.append(" _").append(getOpToken(step));
}
} else {
sb.append(getOpToken(operation));
}
return sb.toString();
}
private static String getOpToken(ModelNode operation) {
StringBuffer sb = new StringBuffer();
sb.append(operation.get(ADDRESS).asString())
.append(": ")
.append(operation.get(OP))
.append("; ")
.append(operation.get(CHILD_TYPE).asString())
.append("; ");
if (operation.get(NAME).isDefined()) {
sb.append(operation.get(NAME).asString());
}
return sb.toString();
}
@Override
public DispatchRequest execute(
DMRAction action,
final AsyncCallback<DMRResponse> resultCallback,
Map<String, String> properties) {
assert action.getOperation() != null;
final ModelNode operation = action.getOperation();
// diagnostics, development only
if (!GWT.isScript()) {
Scheduler.get()
.scheduleDeferred(
new Scheduler.ScheduledCommand() {
@Override
public void execute() {
decomposeAndLog(operation);
}
});
}
// Request request = executeRequest(resultCallback, GWT.isScript() ? operation :
// runAsRole(operation));
// TODO: https://issues.jboss.org/browse/HAL-100
Request request = executeRequest(resultCallback, runAsRole(operation, properties));
return new DispatchRequestHandle(request);
}
private ModelNode runAsRole(final ModelNode operation, final Map<String, String> properties) {
String role = properties.get("run_as");
if (role != null
&& !operation.get(OP).asString().equals("whoami")) // otherwise we get the replacement role
{
operation.get("operation-headers").get("roles").set(role);
}
return operation;
}
private void decomposeAndLog(ModelNode operation) {
if (operation.get(OP).asString().equals(COMPOSITE)) {
List<ModelNode> steps = operation.get(STEPS).asList();
for (ModelNode step : steps) logAtomicOperation(step);
} else {
logAtomicOperation(operation);
}
}
private void logAtomicOperation(ModelNode operation) {
if (operation.get(OP).asString().equals(COMPOSITE)) // nested composite ops?
{
Log.error("Failed to to log resources access", operation.toString());
} else if (operation.hasDefined(CHILD_TYPE)) {
// ModelNode address = operation.get(ADDRESS).clone();
// address.add(operation.get(CHILD_TYPE).toString(), "*");
resourceLog.log(
Window.Location.getHash(),
operation.get(ADDRESS).toString()
+ " : "
+ operation.get(OP).asString()
+ "(child-type="
+ operation.get(CHILD_TYPE)
+ ")");
} else {
resourceLog.log(
Window.Location.getHash(),
operation.get(ADDRESS).toString() + " : " + operation.get(OP).asString());
}
}
@Override
public DispatchRequest undo(DMRAction action, DMRResponse result, AsyncCallback<Void> callback) {
throw new RuntimeException("Not implemented yet.");
}
private Request executeRequest(
final AsyncCallback<DMRResponse> resultCallback, final ModelNode operation) {
if (idCounter == Long.MAX_VALUE) {
idCounter = 0;
}
Request request = null;
try {
final String id = String.valueOf(idCounter++);
trace(Type.BEGIN, id, operation);
final RequestBuilder requestBuilder = chooseRequestBuilder(operation);
trace(Type.SERIALIZED, id, operation);
final RequestCallback requestCallback =
new RequestCallback() {
@Override
public void onResponseReceived(Request request, Response response) {
trace(Type.RECEIVE, id, operation);
int statusCode = response.getStatusCode();
if (200 == statusCode) {
resultCallback.onSuccess(
new DMRResponse(
requestBuilder.getHTTPMethod(),
response.getText(),
response.getHeader(HEADER_CONTENT_TYPE)));
} else if (401 == statusCode || 0 == statusCode) {
resultCallback.onFailure(new DispatchError("Authentication required.", statusCode));
} else if (403 == statusCode) {
resultCallback.onFailure(new DispatchError("Authentication required.", statusCode));
} else if (307 == statusCode) {
String location = response.getHeader("Location");
Log.error("Redirect '" + location + "'. Could not execute " + operation.toString());
redirect(location);
} else if (503 == statusCode) {
resultCallback.onFailure(
new DispatchError(
"Service temporarily unavailable. Is the server still booting?",
statusCode));
} else {
StringBuilder sb = new StringBuilder();
sb.append("Unexpected HTTP response").append(": ").append(statusCode);
sb.append("\n\n");
sb.append("Request\n");
sb.append(operation.toString());
sb.append("\n\nResponse\n\n");
sb.append(response.getStatusText()).append("\n");
String payload =
response.getText().equals("")
? "No details"
: ModelNode.fromBase64(response.getText()).toString();
sb.append(payload);
resultCallback.onFailure(new DispatchError(sb.toString(), statusCode));
}
trace(Type.END, id, operation);
}
@Override
public void onError(Request request, Throwable e) {
trace(Type.RECEIVE, id, operation);
resultCallback.onFailure(e);
trace(Type.END, id, operation);
}
};
requestBuilder.setCallback(requestCallback);
request = requestBuilder.send();
trace(Type.SEND, id, operation);
} catch (RequestException e) {
resultCallback.onFailure(e);
}
return request;
}
static final String[] COLLECTION_OPS = {READ_CHILDREN_RESOURCES_OPERATION};
private static boolean expectCollectionResponse(ModelNode operation) {
for (String op : COLLECTION_OPS) {
if (op.equals(operation.get(OP).asString())) {
return true;
}
}
return false;
}
private RequestBuilder chooseRequestBuilder(final ModelNode operation) {
RequestBuilder requestBuilder;
final String op = operation.get(OP).asString();
if (READ_RESOURCE_DESCRIPTION_OPERATION.equals(op)) {
String endpoint = endpointConfig.getUrl();
if (endpoint.endsWith("/")) {
endpoint = endpoint.substring(0, endpoint.length() - 1);
}
String descriptionUrl = endpoint + descriptionOperationToUrl(operation);
requestBuilder =
new RequestBuilder(
RequestBuilder.GET, com.google.gwt.http.client.URL.encode(descriptionUrl));
requestBuilder.setHeader(HEADER_ACCEPT, DMR_ENCODED);
requestBuilder.setHeader(HEADER_CONTENT_TYPE, DMR_ENCODED);
requestBuilder.setIncludeCredentials(true);
requestBuilder.setRequestData(null);
} else {
requestBuilder = postRequestBuilder();
requestBuilder.setRequestData(operation.toBase64String());
}
return requestBuilder;
}
private String descriptionOperationToUrl(final ModelNode operation) {
StringBuilder url = new StringBuilder();
final List<Property> address = operation.get(ADDRESS).asPropertyList();
for (Property property : address) {
url.append("/").append(property.getName()).append("/").append(property.getValue().asString());
}
url.append("?operation=").append("resource-description");
for (String parameter : READ_RESOURCE_DESCRIPTION_OPTIONAL_PARAMETERS) {
if (operation.has(parameter)) {
url.append("&").append(parameter).append("=").append(operation.get(parameter).asString());
}
}
return url.toString();
}
private void trace(Type type, String id, ModelNode operation) {
if (!trackInvocations) return;
if (Type.BEGIN.equals(type)) {
diagnostics.logRpc(type.getClassifier(), id, System.currentTimeMillis(), getToken(operation));
} else {
diagnostics.logRpc(type.getClassifier(), id, System.currentTimeMillis());
}
}
private static enum Type {
BEGIN("begin"),
END("end"),
SEND("requestSent"),
RECEIVE("responseReceived"),
SERIALIZED("requestSerialized"),
DESERIALIZED("responseDeserialized");
private String classifier;
private Type(String classifier) {
this.classifier = classifier;
}
public String getClassifier() {
return classifier;
}
}
class DispatchRequestHandle implements DispatchRequest {
private Request delegate;
DispatchRequestHandle(Request delegate) {
this.delegate = delegate;
}
@Override
public void cancel() {
if (delegate != null) {
delegate.cancel();
}
}
@Override
public boolean isPending() {
return delegate != null ? delegate.isPending() : false;
}
}
}
