Describe how the web-based game application can run on multiple operating platforms. Describe how the server side provides communication to the client side with REST API style.
Describe what is required of the developers so that the application on all three clients is able to be used on the website. What next steps would entail to develop for the client side of the game application. For instance:
How would you add more users to the database?
What other features might you include in the game app?
What if The Gaming Room asked you to host the application on a fourth and fifth client? For example, on Xbox and PS4.
Here is the code: GameAuthApplication.java package com.gamingroom.gameauth; import io.dropwizard.A pplication; import io.dropw izard.Configuration; import io.dropw izard.auth.A uthD ynam icF eature; import io.dropwizard.auth.Auth ValueFactoryProvider; import io.dropwizard.auth.basic.B asicCredentialAuthFilter; import io.dropw izard.client.JerseyClientBuilder; import io.dropw izard.setup.Bootstrap; import io.dropw izard.setup. Environment; import javax.ws.rs.client.Client; import org.glassfish.jersey.server.filter.RolesA llowedDynam icF eature; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import com.gamingroom.gameauth.auth.GameAuthenticator; import com.gamingroom.gameauth.auth.GameA uthorizer; import com.gamingroom.gameauth.auth.GameUser; import com.gamingroom.gameauth.controller.GameUserRESTController; import com.gamingroom.gameauth.controller.RESTClientController; import com.gamingroom.gameauth.healthcheck.AppHealthCheck; import com.gamingroom.gam eauth.healthcheck.HealthCheckController; public class GameAuthApplication extends Application>{ private static final Logger LOGGER = LoggerFactory getLogger(GameA uthApplication.class); (a) Override public void initialize(Bootstrap b) \{ (a) Override public void run(Configuration c, Environment e) throws Exception \{ LOGGER.info("Registering REST resources"); // FIXME: register GameUserRESTController (based on B asicAuth Security Exan // FIXME: Create io.dropwizard.client.JerseyClientBuilder instance and give it io.dropwizard.setup.Environment reference (based on BasicAuth Security Example) e.jersey().register(new GameUserRESTController(e.getValidator())); final Client client = new JerseyClientBuilder(e).build("DemoRESTClient"); e.jersey().register(new RESTClientController(client)); // Application health check e.healthChecks().register("APIHealthCheck", new AppHealthCheck(client)); // Run multiple health checks e.jersey().register(new HealthCheckController(e.healthChecks())); //Setup Basic Security e.jersey().register(new AuthDynamicFeature(new BasicCredentialAuthFilter.Builder () .setAuthenticator(new GameAuthenticator()) .setAuthorizer(new GameAuthorizer()) .setRealm("App Security") .buildAuthFilter())); e.jersey().register(new AuthValueFactoryProvider.Binder > (GameUser.class)); e.jersey().register(RolesAllowedDynamicFeature.class); 1 public static void main(String[] args) throws Exception \{ new GameAuthApplication().run(args); 1 1 GameAuthConfiguration.java package com.gamingroom.gamcauth; import io.dropwizard.Configuration; import com.fasterxml.jackson.annotation.JsonProperty; import org.hibernate.validator.constraints.*; import javax.validation.constraints.*; public class GameAuthConfiguration extends Configuration \{ GameAuthenticator.java package com.gamingroom.gameauth.auth; import io.dropwizard.auth.A uthenticationException; import io.dropw izard.auth.Authenticator; import io.dropw izard.auth. basic.B asicCredentials; import java.util.Map; import java.util.Optional; import java.util.Set; import com.google.common.collect.ImmutableMap; import com.google.common.collect.ImmutableSet; public class GameAuthenticator implements A uthenticator \{ private static final Map > VALID_USERS = ImmutableMap.of( "guest", ImmutableSet.of( ), "user", ImmutableSet.of("USER"), "adm in", ImmutableSet.of("ADMIN", "USER") ); (a) Override public OptionakGameUser> authenticate(BasicCredentials credentials) throws Authentication Exception i. if (VALID_USERS.containsKey(credentials.getUsername()) \& \& "password".equals(credentials.getPassword())) \{ //FIXME: Finish the authorize method based on BasicAuth Security Example for new GameUser return Optional.of(new GameUser(credentials.getUsername () , VALID_USERS.get(credentials.getUsername()))); return Optional.empty(); ? GameAuthorizer.java package com.gamingroom.gameauth.auth; import io.dropwizard.auth.Authorizer; public class GameAuthorizer implements A uthorizer \{ (a) Override public boolean authorize(GameUser user, String role) return user.getRoles()!= null \&\& user.getRoles().contains(role); 3 ) GameUser.java package com.gamingroom.gameauth.auth; import java.security.Principal; import java.util.Set; public class GameUser implements Principal private String name = ""; private final S et roles; public GameUser(String name) \{ this.name = name; this.roles = null; 3 public GameUser(String name, Set roles) \{ this.name = name; this.roles = roles; ? public String getName() return name; \} public int getId() return (int) (Math.random ()100) \} public Set getRoles() \{ return roles; 1 ) GameUserRESTController.java package com.gamingroom.gameauth.controller; import io.dropw izard.auth.A uth; import java.net.URI; import java.net.URISyntaxException; import java.util.ArrayList; import java.util.Set; import javax.annotation.security.PermitAll; import javax.annotation.security.RolesAllowed; import javax.validation.ConstraintViolation; import javax.validation. Validator; import javax.ws.rs.DELETE; im port javax.ws.rs.GET; import javax.ws.rs.POST; import javax.ws.rs.PUT; import javax.ws.rs.Path; import javax.ws.rs.PathParam; import javax.ws.rs.Produces; import javax.ws.rs.core.MediaType; import javax.ws.rs.core.Response; import javax.ws.rs.core.Response.Status; import com.gamingroom.gameauth.auth.GameUser; import com.gamingroom.gameauth.dao.GameUserDB; import com.gamingroom.gameauth.representations.GameUserInfo; // FIXME: Add path annotation for gameusers (a)Path("/gameusers/") (a) Produces(MediaType.APPLICATION_JSON) public class GameUscrRESTController private final Validator validator; public GameUserRESTController(Validator validator) \{ this.validator = validator; ? (a) PermitA ll (a) GET public Response getGameUsers(@A Ath GameUser user) return Response.ok(GameUserDB.getGameUsers()), build(); 3 // FIXME: Add RolesAllowed annotation for USER based on BasicAuth Security Example (a) RolesAllowed(\{ "USER" \}) (a) GET (a) Path("/\{id }") public Response getGameUserById(@PathParam("id") Integer id,(a)Auth GameUser user) //You can validate here if user is watching his record / if(id != user.getIdO)\{ //Not allowed y/ GameUserInfo gameUserInfo = GameUserDB.getGameUser(id); if (gameUserInfo != null) return Response.ok(gameUserInfo).build(); else return Response.status(Status.NOT FOUND).build(); // FIXME: Add RolesAllowed annotation for ADMIN based on BasicAuth Security Example (a) RolesAllowed(\{"ADMIN" }) (a) POST public Response createGameUser(GameUserInfo gameUserInfo, @A Ath GameUser user) throws URISyntaxException // validation Set > violations = validator.validate ( gameUserInfo); GameUserInfo e = GameUserDB.getGameUser(gameUserInfo.getId()); if (violations.size ()>0 ) \{ ArrayList String > validationMessages = new ArrayL ist String >(); for (ConstraintViolation violation : violations) \{ validationMessages.add(violation.getPropertyPath().toString()+":" + violation.getMessage()); \} return Response.status(Status.BAD_REQUEST).entity(validationMessages).build(); ? if (e != null) GameUserDB updateGameUser(gameUserInfo.getId(), gameUserInfo); return Response.created(new URI("/gameusers/" + gameUserInfo.getId())) build(); ; else return Response.status(Status.NOT_FOUND).build(); 3 (a) PUT (a) Path("/\{id } ") public Response updateGameUserById(@PathParam("id") Integer id, GameUserInfo gameUserInfo) \{ // validation Set > violations = validator.validate(gameUserInfo); GameUserInfo e = GameUserDB.getGameUser(gameUserInfo.getId()); if (violations.size ()>0 ) ArrayL ist validationMessages = new ArrayL is (); RESTClientController.java package com.gamingroom.gameauth.controller; import java.util.ArrayList; import javax.ws.rs.GET; import javax.ws.rs.Path; import javax.ws.rs.PathParam; import javax.ws.rs.Produces; im port javax.ws.rs.client.Client; import javax.ws.rs.client.Invocation; import javax.ws.rs.client.WebTarget; import javax.ws.rs.core.MediaType; import javax.ws.rs.core.Response; import com.gamingroom.gameauth.representations.GameUserInfo; (a) Produces(MediaType.TEXT_PLAIN) (a) Path("/client/") public class RESTClientController private Client client; public RESTClientController(Client client) \{ this.client = client; \} // FIXME: Add annotation for GET and Path for gameusers // Here we set the correct HTTP method to request data from the DB. @GET // The GET method returns data of game users added to URL path defined below. @Path("/gameusers/") @Produces(MediaType.TEXT_PLAIN) public String getGameUsers() //Do not hard code in your application WebTarget webTarget = client.target("http://localhost:8080/gameusers"); Invocation.Builder invocationBuilder = webTarget.request(MediaType.APPLICATION_JSON); Response response = invocationBuilder.get () ; (a) SuppressWarnings("rawtypes") ArrayL ist gameusers = response readEntity(ArrayL ist.class); return gameusers.toString(); \} @GET @Path("/gameusers/\{id } ") public String getGameUserById(@PathParam("id") int id) \{ //Do not hard code in your application WebTarget webTarget = client.target("http://localhost:8080/gameusers/"+id); Invocation.Builder invocationBuilder = webTarget.request(MediaType.APPLICATION_JSON); Response response = invocationBuilder.get () ; GameUserInfo gameUserInfo = response.readEntity(GameUserInfo.class); return gameUserInfo.toString(); 3 ) GameUserDB.java package com.gamingroom.gameauth.dao; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import com.gamingroom.gameauth.representations.GameUserInfo; public class GameUserDB public static HashMap gameUserInfos = new HashMap > (); static gameUserInfos.put(1, new GameUserInfo(1, "Lokesh", "Gupta", "India")); gameUserInfos.put(2, new GameUserInfo(2, "John", "Gruber", "USA")); gameUserInfos.put(3, new GameUserInfo(3, "Melcum", "Marshal", "AUS")); 3 public static List getGameUsers() return new ArrayList (gameUserInfos.values ()); 3 public static GameUserInfo getGameUser(Integer id) return gameUserInfos.get(id); ) public static void updateGameUser(Integer id, GameUserInfo gameUserInfo) \{ gameUserInfos.put(id, gameUserInfo); 3 public static void removeGameUser(Integer id) gameUserInfos.remove(id); \} y AppH ealthCheck.java package com.gamingroom.gameauth.healthcheck; import java.util.ArrayL ist; import javax.ws.rs.client.Client; import javax.ws.rs.client.Invocation; im port javax.ws.rs.client.W ebTarget; import javax.ws.rs.core.MediaType; import javax.ws.rs.core.Response; import com.codahale.metrics.health.HealthCheck; public class AppHealthCheck extends HealthCheck \{ private final Client client; public AppHealthCheck(Client client) \{ super(); this.client = client; \} (a) Override protected Result check() throws Exception \{ WebTarget webTarget = client.target("http://localhost:8080/gameusers"); Invocation.Builder invocationBuilder = webTarget.request(MediaType.APPLICATION_JSON); Response response = invocationB B ilder.get(); (a) SuppressWarnings("rawtypes") ArrayL ist gameusers = response.readEntity(ArrayList.class); if(gameusers !-null \&\& gameusers.size ()>0){ return Result.healthy(); \} return Result unhealthy("API Failed"); ) 1 HealthCheckController.java package com.gamingroom.gameauth.healthcheck; import java.util.Map.Entry; import java.util.Set; import javax.ws.rs.GET; import javax.ws.rs.Path; import javax.ws.rs.Produces; import javax.ws.rs.core.MediaType; import com.codahale.metrics.health.HealthCheck.Result; import com.codahale.metrics.health.HealthCheckRegistry; (a) Produces(MediaType.APPLICATION_JSON) (a) Path("/status") public class HealthCheckController \{ private HealthCheckRegistry registry; public HealthCheckController(HealthCheckRegistry registry) \{ this.registry = registry; @GET public Set > getStatus( ){ return registry.runHealthChecks().entry Set(); ) GameUserInfo.java package com.gamingroom.gameauth.representations; import javax.validation.constraints.NotNull; import javax.validation.constraints.Pattern; import org.hibernate.validator.constraints.Length; import org.hibernate.validator.constraints.NotB lank; (a) SuppressWarnings("deprecation") public class GameUserInfo \{ (@) NotNull private Integer id; (a) NotBlank (a) Length (min=2,max=255) private String firstName; (a) NotBlank (a Length (min=2,max=255) private String lastName; @ Pattern(regexp= ".+@.+11.[a-z]+") private String email; public GameUserInfo()\{ \} public GameUserInfo(Integer id, String firstName, String lastName, String email) this.id = id; this.firstName = firstName; this.lastName = lastName; this.email = email; 3 public Integer getId() return id; 3 public void setId(Integer id) \{ this.id = id; public String getFirstName() return firstName; 3 public void setFirstName(String firstName) this.firstName = firstName; 3 public String getLastName()\{ return lastName; 3 public void setLastName(String lastName) \{ this.lastName = lastName; \} public String getEmail() return email; \} public void setEmail(String email) \{ this.cmail = cmail; 3 (a) Override public String toString() return "GameUser [id-" + id + ", firstName e"+ firstName + ", lastName " + lastName + ", email=" + email + "]"; )
