Examples with ServiceSpecification co.cask.cdap.api.service.ServiceSpecification used on opensource projects

Example 1 with ServiceSpecification

use of co.cask.cdap.api.service.ServiceSpecification 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, ImmutableSet.<String>of(), ImmutableList.<ServiceHttpEndpoint>of()));
    }
    ResourceSpecification resourceSpec = handlerSpec.getResourceSpecification();
    return new ServiceSpecification(className, twillSpec.getName(), twillSpec.getName(), handlers, new Resources(resourceSpec.getMemorySize(), resourceSpec.getVirtualCores()), resourceSpec.getInstances());
}

Example 2 with ServiceSpecification

use of co.cask.cdap.api.service.ServiceSpecification 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, HttpServiceHandlerSpecification> handlers = deserializeMap(jsonObj.get("handlers"), context, HttpServiceHandlerSpecification.class);
    Resources resources = context.deserialize(jsonObj.get("resources"), Resources.class);
    int instances = jsonObj.get("instances").getAsInt();
    return new ServiceSpecification(className, name, description, handlers, resources, instances);
}

Example 3 with ServiceSpecification

use of co.cask.cdap.api.service.ServiceSpecification in project cdap by caskdata.

the class DistributedServiceProgramRunner method setupLaunchConfig.

@Override
protected void setupLaunchConfig(LaunchConfig launchConfig, Program program, ProgramOptions options, CConfiguration cConf, Configuration hConf, File tempDir) {
    ApplicationSpecification appSpec = program.getApplicationSpecification();
    ServiceSpecification serviceSpec = appSpec.getServices().get(program.getName());
    // Add a runnable for the service handler
    Resources resources = SystemArguments.getResources(options.getUserArguments(), serviceSpec.getResources());
    launchConfig.addRunnable(serviceSpec.getName(), new ServiceTwillRunnable(serviceSpec.getName()), resources, serviceSpec.getInstances());
}

Example 4 with ServiceSpecification

use of co.cask.cdap.api.service.ServiceSpecification in project cdap by caskdata.

the class GenerateClientUsageExample method serviceClient.

public void serviceClient() throws Exception {
    // Construct the client used to interact with CDAP
    ServiceClient serviceClient = new ServiceClient(clientConfig);
    // Fetch service information using the service in the PurchaseApp example
    ServiceSpecification serviceSpec = serviceClient.get(NamespaceId.DEFAULT.app("PurchaseApp").service("CatalogLookup"));
}

Example 5 with ServiceSpecification

use of co.cask.cdap.api.service.ServiceSpecification in project cdap by caskdata.

the class ProgramLifecycleHttpHandler method getServiceInstances.

/**
   * Return the number of instances of a service.
   */
@GET
@Path("/apps/{app-id}/services/{service-id}/instances")
public void getServiceInstances(HttpRequest request, HttpResponder responder, @PathParam("namespace-id") String namespaceId, @PathParam("app-id") String appId, @PathParam("service-id") String serviceId) throws Exception {
    try {
        ProgramId programId = new ProgramId(namespaceId, appId, ProgramType.SERVICE, serviceId);
        if (!store.programExists(programId)) {
            responder.sendString(HttpResponseStatus.NOT_FOUND, "Service not found");
            return;
        }
        ServiceSpecification specification = (ServiceSpecification) lifecycleService.getProgramSpecification(programId);
        if (specification == null) {
            responder.sendStatus(HttpResponseStatus.NOT_FOUND);
            return;
        }
        int instances = specification.getInstances();
        responder.sendJson(HttpResponseStatus.OK, new ServiceInstances(instances, getInstanceCount(programId, serviceId)));
    } catch (SecurityException e) {
        responder.sendStatus(HttpResponseStatus.UNAUTHORIZED);
    }
}