use of io.cdap.cdap.api.service.http.HttpServiceHandlerSpecification in project cdap by caskdata.
the class ServiceHttpServer method createDelegatorContexts.
@Override
protected List<HandlerDelegatorContext> createDelegatorContexts() throws Exception {
// Constructs all handler delegator. It is for bridging ServiceHttpHandler and HttpHandler (in netty-http).
List<HandlerDelegatorContext> delegatorContexts = new ArrayList<>();
InstantiatorFactory instantiatorFactory = new InstantiatorFactory(false);
for (HttpServiceHandlerSpecification handlerSpec : serviceSpecification.getHandlers().values()) {
Class<?> handlerClass = getProgram().getClassLoader().loadClass(handlerSpec.getClassName());
@SuppressWarnings("unchecked") TypeToken<HttpServiceHandler> type = TypeToken.of((Class<HttpServiceHandler>) handlerClass);
MetricsContext metrics = httpServiceContext.getProgramMetrics().childContext(BasicHttpServiceContext.createMetricsTags(handlerSpec, getInstanceId()));
delegatorContexts.add(new HandlerDelegatorContext(type, instantiatorFactory, handlerSpec, contextFactory, metrics));
}
return delegatorContexts;
}
use of io.cdap.cdap.api.service.http.HttpServiceHandlerSpecification in project cdap by caskdata.
the class ServiceSpecificationCodec method decodeOldSpec.
private ServiceSpecification decodeOldSpec(JsonObject json) {
String className = json.get("classname").getAsString();
TwillSpecification twillSpec = twillSpecificationAdapter.fromJson(json.get("spec").getAsString()).getTwillSpecification();
Map<String, HttpServiceHandlerSpecification> handlers = Maps.newHashMap();
RuntimeSpecification handlerSpec = twillSpec.getRunnables().get(twillSpec.getName());
Map<String, String> configs = handlerSpec.getRunnableSpecification().getConfigs();
// Get the class names of all handlers. It is stored in the handler runnable spec configs
List<String> handlerClasses = GSON.fromJson(configs.get("service.runnable.handlers"), new TypeToken<List<String>>() {
}.getType());
List<JsonObject> handlerSpecs = GSON.fromJson(configs.get("service.runnable.handler.spec"), new TypeToken<List<JsonObject>>() {
}.getType());
for (int i = 0; i < handlerClasses.size(); i++) {
String handlerClass = handlerClasses.get(i);
JsonObject spec = handlerSpecs.get(i);
Map<String, String> properties = GSON.fromJson(spec.get("properties"), new TypeToken<Map<String, String>>() {
}.getType());
// Reconstruct the HttpServiceSpecification. However there is no way to determine the datasets or endpoints
// as it is not recorded in old spec. It's ok since the spec is only used to load data from MDS during redeploy.
handlers.put(spec.get("name").getAsString(), new HttpServiceHandlerSpecification(handlerClass, spec.get("name").getAsString(), spec.get("description").getAsString(), properties, Collections.emptySet(), Collections.emptyList()));
}
ResourceSpecification resourceSpec = handlerSpec.getResourceSpecification();
return new ServiceSpecification(className, twillSpec.getName(), twillSpec.getName(), handlers, new Resources(resourceSpec.getMemorySize(), resourceSpec.getVirtualCores()), resourceSpec.getInstances(), Collections.emptyMap());
}
use of io.cdap.cdap.api.service.http.HttpServiceHandlerSpecification in project cdap by caskdata.
the class ServiceSpecificationCodec method deserialize.
@Override
public ServiceSpecification deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws JsonParseException {
JsonObject jsonObj = (JsonObject) json;
if (isOldSpec(jsonObj)) {
return decodeOldSpec(jsonObj);
}
String className = jsonObj.get("className").getAsString();
String name = jsonObj.get("name").getAsString();
String description = jsonObj.get("description").getAsString();
Map<String, Plugin> plugins = deserializeMap(jsonObj.get("plugins"), context, Plugin.class);
Map<String, HttpServiceHandlerSpecification> handlers = deserializeMap(jsonObj.get("handlers"), context, HttpServiceHandlerSpecification.class);
Resources resources = context.deserialize(jsonObj.get("resources"), Resources.class);
int instances = jsonObj.get("instances").getAsInt();
Map<String, String> properties = deserializeMap(jsonObj.get("properties"), context, String.class);
return new ServiceSpecification(className, name, description, handlers, resources, instances, plugins, properties);
}
use of io.cdap.cdap.api.service.http.HttpServiceHandlerSpecification in project cdap by caskdata.
the class DefaultHttpServiceHandlerConfigurer method createSpecification.
/**
* Creates a {@link HttpServiceHandlerSpecification} from the parameters stored in this class.
*
* @return a new specification from the parameters stored in this instance
*/
public HttpServiceHandlerSpecification createSpecification() {
List<ServiceHttpEndpoint> endpoints = new ArrayList<>();
// Inspect the handler to grab all @UseDataset, @Property and endpoints.
Reflections.visit(handler, handler.getClass(), new DataSetFieldExtractor(datasets), new PropertyFieldExtractor(properties), new ServiceEndpointExtractor(endpoints));
return new HttpServiceHandlerSpecification(handler.getClass().getName(), name, "", properties, datasets, endpoints);
}
use of io.cdap.cdap.api.service.http.HttpServiceHandlerSpecification in project cdap by caskdata.
the class DefaultServiceConfigurer method createHandlerSpecs.
/**
* Constructs HttpServiceSpecifications for each of the handlers in the {@param handlers} list.
* Also performs verifications on these handlers (that a NettyHttpService can be constructed from them).
*/
private Map<String, HttpServiceHandlerSpecification> createHandlerSpecs(List<? extends HttpServiceHandler> handlers) {
verifyHandlers(handlers);
Map<String, HttpServiceHandlerSpecification> handleSpecs = Maps.newHashMap();
for (HttpServiceHandler handler : handlers) {
DefaultHttpServiceHandlerConfigurer configurer = new DefaultHttpServiceHandlerConfigurer(handler, deployNamespace, artifactId, pluginFinder, pluginInstantiator, systemTableConfigurer, runtimeInfo, getFeatureFlagsProvider());
handler.configure(configurer);
HttpServiceHandlerSpecification spec = configurer.createSpecification();
Preconditions.checkArgument(!handleSpecs.containsKey(spec.getName()), "Handler with name %s already existed.", spec.getName());
handleSpecs.put(spec.getName(), spec);
addDatasetModules(configurer.getDatasetModules());
addDatasetSpecs(configurer.getDatasetSpecs());
addPlugins(configurer.getPlugins());
}
return handleSpecs;
}
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