Refactor GetEppResourceCommand hierarchy

This refactors the GetEppResourceCommand hierarchy a bit so that instead of
using the type param on the class to do implicit loading (which doesn't
work that well any more for domain applications anyway), we just do the
loading in each child class and rely on the parent class only for printing
and setting common flags.

I did this to make it possible for loadByForeignKey() to have strong typing
(in a future CL), but I think this changes stands on its own merits for
making the logic here more straightforward and actually somewhat shorter.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=134115072

java/google/registry/tools/GetApplicationCommand.java

@@ -14,16 +14,16 @@
 
 package google.registry.tools;
 
+import static google.registry.model.EppResourceUtils.loadDomainApplication;
+
 import com.beust.jcommander.Parameter;
 import com.beust.jcommander.Parameters;
-import google.registry.model.domain.DomainApplication;
 import google.registry.tools.Command.GtechCommand;
 import java.util.List;
 
 /** Command to show a domain application. */
-@Parameters(separators = " =", commandDescription = "Show domain application record(s)")
-final class GetApplicationCommand extends GetEppResourceCommand<DomainApplication>
-    implements GtechCommand {
+@Parameters(separators = " =", commandDescription = "Show domain application resource(s)")
+final class GetApplicationCommand extends GetEppResourceCommand implements GtechCommand {
 
   @Parameter(
       description = "Domain application id(s)",
@@ -31,9 +31,10 @@ final class GetApplicationCommand extends GetEppResourceCommand<DomainApplicatio
   private List<String> mainParameters;
 
   @Override
-  public void processParameters() {
+  public void runAndPrint() {
     for (String applicationId : mainParameters) {
-      printResource(applicationId);
+      printResource(
+          "Application", applicationId, loadDomainApplication(applicationId, readTimestamp));
     }
   }
 }

java/google/registry/tools/GetApplicationIdsCommand.java

@@ -17,6 +17,7 @@ package google.registry.tools;
 import static google.registry.model.index.DomainApplicationIndex.loadActiveApplicationsByDomainName;
 import static google.registry.model.registry.Registries.assertTldExists;
 import static google.registry.model.registry.Registries.findTldForNameOrThrow;
+import static org.joda.time.DateTimeZone.UTC;
 
 import com.beust.jcommander.Parameter;
 import com.beust.jcommander.Parameters;
@@ -26,12 +27,12 @@ import google.registry.model.domain.DomainApplication;
 import google.registry.tools.Command.GtechCommand;
 import google.registry.tools.Command.RemoteApiCommand;
 import java.util.List;
+import org.joda.time.DateTime;
 
 /** Command to generate a list of all applications for a given domain name(s). */
 @Parameters(separators = " =",
     commandDescription = "Generate list of application IDs and sponsors for given domain name(s)")
-final class GetApplicationIdsCommand extends GetEppResourceCommand<DomainApplication>
-    implements RemoteApiCommand, GtechCommand {
+final class GetApplicationIdsCommand implements RemoteApiCommand, GtechCommand {
 
   @Parameter(
       description = "Fully qualified domain name(s)",
@@ -39,10 +40,7 @@ final class GetApplicationIdsCommand extends GetEppResourceCommand<DomainApplica
   private List<String> mainParameters;
 
   @Override
-  void processParameters() {
-    // Note that this function explicitly performs its own resource load and print, ignoring
-    // GetEppResourceCommand.printResource(), because we do NOT want to display the entire
-    // application to gTech users -- just the ID# and sponsor.
+  public void run() {
     for (String domainName : mainParameters) {
       InternetDomainName tld = findTldForNameOrThrow(InternetDomainName.from(domainName));
       assertTldExists(tld.toString());
@@ -55,7 +53,7 @@ final class GetApplicationIdsCommand extends GetEppResourceCommand<DomainApplica
       // example2.tld:
       //    No applications exist for 'example2.tld'.
       ImmutableList<DomainApplication> applications = ImmutableList.copyOf(
-          loadActiveApplicationsByDomainName(domainName, readTimestamp));
+          loadActiveApplicationsByDomainName(domainName, DateTime.now(UTC)));
       if (applications.isEmpty()) {
         System.out.printf("    No applications exist for \'%s\'.%n", domainName);
       } else {

java/google/registry/tools/GetContactCommand.java

@@ -14,6 +14,8 @@
 
 package google.registry.tools;
 
+import static google.registry.model.EppResourceUtils.loadByForeignKey;
+
 import com.beust.jcommander.Parameter;
 import com.beust.jcommander.Parameters;
 import google.registry.model.contact.ContactResource;
@@ -21,9 +23,8 @@ import google.registry.tools.Command.GtechCommand;
 import java.util.List;
 
 /** Command to show one or more contacts. */
-@Parameters(separators = " =", commandDescription = "Show contact record(s)")
-final class GetContactCommand extends GetEppResourceCommand<ContactResource>
-    implements GtechCommand {
+@Parameters(separators = " =", commandDescription = "Show contact resource(s)")
+final class GetContactCommand extends GetEppResourceCommand implements GtechCommand {
 
   @Parameter(
       description = "Contact id(s)",
@@ -31,9 +32,10 @@ final class GetContactCommand extends GetEppResourceCommand<ContactResource>
   private List<String> mainParameters;
 
   @Override
-  public void processParameters() {
-    for (String contactNameString : mainParameters) {
-      printResource(contactNameString);
+  public void runAndPrint() {
+    for (String contactId : mainParameters) {
+      printResource(
+          "Contact", contactId, loadByForeignKey(ContactResource.class, contactId, readTimestamp));
     }
   }
 }

java/google/registry/tools/GetDomainCommand.java

@@ -14,6 +14,8 @@
 
 package google.registry.tools;
 
+import static google.registry.model.EppResourceUtils.loadByForeignKey;
+
 import com.beust.jcommander.Parameter;
 import com.beust.jcommander.Parameters;
 import google.registry.model.domain.DomainResource;
@@ -21,9 +23,8 @@ import google.registry.tools.Command.GtechCommand;
 import java.util.List;
 
 /** Command to show a domain resource. */
-@Parameters(separators = " =", commandDescription = "Show domain record(s)")
-final class GetDomainCommand extends GetEppResourceCommand<DomainResource>
-    implements GtechCommand {
+@Parameters(separators = " =", commandDescription = "Show domain resource(s)")
+final class GetDomainCommand extends GetEppResourceCommand implements GtechCommand {
 
   @Parameter(
       description = "Fully qualified domain name(s)",
@@ -31,9 +32,10 @@ final class GetDomainCommand extends GetEppResourceCommand<DomainResource>
   private List<String> mainParameters;
 
   @Override
-  public void processParameters() {
+  public void runAndPrint() {
     for (String domainName : mainParameters) {
-      printResource(domainName);
+      printResource(
+          "Domain", domainName, loadByForeignKey(DomainResource.class, domainName, readTimestamp));
     }
   }
 }

java/google/registry/tools/GetEppResourceCommand.java

@@ -15,31 +15,22 @@
 package google.registry.tools;
 
 import static com.google.common.base.Preconditions.checkArgument;
-import static google.registry.model.EppResourceUtils.loadByForeignKey;
-import static google.registry.model.EppResourceUtils.loadDomainApplication;
 import static org.joda.time.DateTimeZone.UTC;
 
 import com.beust.jcommander.Parameter;
 import com.beust.jcommander.Parameters;
 import com.googlecode.objectify.Key;
 import google.registry.model.EppResource;
-import google.registry.model.domain.DomainApplication;
 import google.registry.tools.Command.RemoteApiCommand;
-import google.registry.util.TypeUtils.TypeInstantiator;
+import javax.annotation.Nullable;
 import org.joda.time.DateTime;
 
-/**
- * Abstract command to show a resource.
- *
- * @param <R> {@link EppResource} subclass.
- */
+/** Abstract command to print one or more resources to stdout. */
 @Parameters(separators = " =")
-abstract class GetEppResourceCommand<R extends EppResource> implements RemoteApiCommand {
+abstract class GetEppResourceCommand implements RemoteApiCommand {
 
   private final DateTime now = DateTime.now(UTC);
 
-  private Class<R> clazz = new TypeInstantiator<R>(getClass()){}.getExactType();
-
   @Parameter(
       names = "--read_timestamp",
       description = "Timestamp to use when reading. May not be in the past.")
@@ -50,31 +41,26 @@ abstract class GetEppResourceCommand<R extends EppResource> implements RemoteApi
       description = "Fully expand the requested resource. NOTE: Output may be lengthy.")
   boolean expand;
 
-  /** Resolve any parameters into ids for loadResource. */
-  abstract void processParameters();
+  /** Runs the command's own logic that calls {@link #printResource}. */
+  abstract void runAndPrint();
 
   /**
-   * Load a resource by ID and output. Append the websafe key to the output for use in e.g.
-   * manual mapreduce calls.
+   * Prints a possibly-null resource to stdout, using resourceType and uniqueId to construct a
+   * nice error message if the resource was null (i.e. doesn't exist).
+   *
+   * <p>The websafe key is appended to the output for use in e.g. manual mapreduce calls.
    */
-  void printResource(String uniqueId) {
-    EppResource resource =
-        (clazz == DomainApplication.class)
-            ? loadDomainApplication(uniqueId, readTimestamp)
-            : loadByForeignKey(clazz, uniqueId, readTimestamp);
+  void printResource(String resourceType, String uniqueId, @Nullable EppResource resource) {
     System.out.println(resource != null
         ? String.format("%s\n\nWebsafe key: %s",
             expand ? resource.toHydratedString() : resource,
             Key.create(resource).getString())
-        : String.format(
-            "%s '%s' does not exist or is deleted\n",
-            clazz.getSimpleName().replace("Resource", ""),
-            uniqueId));
+        : String.format("%s '%s' does not exist or is deleted\n", resourceType, uniqueId));
   }
 
   @Override
   public void run() {
     checkArgument(!readTimestamp.isBefore(now), "--read_timestamp may not be in the past");
-    processParameters();
+    runAndPrint();
   }
 }

java/google/registry/tools/GetHostCommand.java

@@ -14,6 +14,8 @@
 
 package google.registry.tools;
 
+import static google.registry.model.EppResourceUtils.loadByForeignKey;
+
 import com.beust.jcommander.Parameter;
 import com.beust.jcommander.Parameters;
 import google.registry.model.host.HostResource;
@@ -21,9 +23,8 @@ import google.registry.tools.Command.GtechCommand;
 import java.util.List;
 
 /** Command to show one or more host resources. */
-@Parameters(separators = " =", commandDescription = "Show host record(s)")
-final class GetHostCommand extends GetEppResourceCommand<HostResource>
-    implements GtechCommand {
+@Parameters(separators = " =", commandDescription = "Show host resource(s)")
+final class GetHostCommand extends GetEppResourceCommand implements GtechCommand {
 
   @Parameter(
       description = "Fully qualified host name(s)",
@@ -31,9 +32,10 @@ final class GetHostCommand extends GetEppResourceCommand<HostResource>
   private List<String> mainParameters;
 
   @Override
-  public void processParameters() {
+  public void runAndPrint() {
     for (String hostName : mainParameters) {
-      printResource(hostName);
+      printResource(
+          "Host", hostName, loadByForeignKey(HostResource.class, hostName, readTimestamp));
     }
   }
 }

javatests/google/registry/tools/GetApplicationCommandTest.java

@@ -70,20 +70,20 @@ public class GetApplicationCommandTest extends CommandTestCase<GetApplicationCom
     persistResource(
         newDomainApplication("example.tld").asBuilder().setDeletionTime(now.plusDays(1)).build());
     runCommand("--read_timestamp=" + now.plusMonths(1), "2-TLD");
-    assertInStdout("DomainApplication '2-TLD' does not exist or is deleted");
+    assertInStdout("Application '2-TLD' does not exist or is deleted");
   }
 
   @Test
   public void testSuccess_deletedApplication() throws Exception {
     persistDeletedDomainApplication("example.tld",  now);
     runCommand("2-TLD");
-    assertInStdout("DomainApplication '2-TLD' does not exist or is deleted");
+    assertInStdout("Application '2-TLD' does not exist or is deleted");
   }
 
   @Test
   public void testSuccess_applicationDoesNotExist() throws Exception {
     runCommand("42-TLD");
-    assertInStdout("DomainApplication '42-TLD' does not exist or is deleted");
+    assertInStdout("Application '42-TLD' does not exist or is deleted");
   }
 
   @Test
@@ -99,6 +99,6 @@ public class GetApplicationCommandTest extends CommandTestCase<GetApplicationCom
     runCommand("2-TLD", "4-TLD", "55-TLD");
     assertInStdout("fullyQualifiedDomainName=example.tld");
     assertInStdout("fullyQualifiedDomainName=example2.tld");
-    assertInStdout("DomainApplication '55-TLD' does not exist or is deleted");
+    assertInStdout("Application '55-TLD' does not exist or is deleted");
   }
 }

javatests/google/registry/tools/GetApplicationIdsCommandTest.java

@@ -64,14 +64,6 @@ public class GetApplicationIdsCommandTest extends CommandTestCase<GetApplication
     runCommand("example.foo");
   }
 
-  @Test
-  public void testSuccess_afterDeletion() throws Exception {
-    persistResource(
-        newDomainApplication("example.tld").asBuilder().setDeletionTime(now.plusDays(1)).build());
-    runCommand("example.tld", "--read_timestamp=" + now.plusMonths(1));
-    assertInStdout("No applications exist for 'example.tld'.");
-  }
-
   @Test
   public void testSuccess_deletedApplication() throws Exception {
     persistResource(