google-nomulus/java/google/registry/tools/CommandUtilities.java
nickfelt 2a32f9048e Fix CommandUtilities to fail gracefully if stdin is unavailable
Right now, it just NPEs, which is harder to debug.  Also make it handle end-of-input more cleanly by assuming that means a negative response.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=146674937
2017-02-06 16:45:23 -05:00

66 lines
2.5 KiB
Java

// Copyright 2017 The Nomulus Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package google.registry.tools;
import static com.google.common.base.Preconditions.checkState;
import com.google.common.base.Ascii;
import com.google.common.base.Strings;
import com.google.common.collect.ImmutableMap;
import com.googlecode.objectify.Key;
import google.registry.model.EppResource;
import google.registry.model.contact.ContactResource;
import google.registry.model.domain.DomainApplication;
import google.registry.model.domain.DomainResource;
import google.registry.model.host.HostResource;
import google.registry.model.index.ForeignKeyIndex;
import org.joda.time.DateTime;
/** Container class for static utility methods. */
class CommandUtilities {
/** A useful parameter enum for commands that operate on {@link EppResource} objects. */
public enum ResourceType {
CONTACT,
HOST,
DOMAIN,
APPLICATION;
public Key<? extends EppResource> getKey(String uniqueId, DateTime now) {
return this == APPLICATION
? Key.create(DomainApplication.class, uniqueId)
: ForeignKeyIndex.loadAndGetKey(
ImmutableMap.of(
CONTACT, ContactResource.class,
HOST, HostResource.class,
DOMAIN, DomainResource.class).get(this),
uniqueId,
now);
}
}
static String addHeader(String header, String body) {
return String.format("%s:\n%s\n%s", header, Strings.repeat("-", header.length() + 1), body);
}
/** Prompts for yes/no input using promptText, defaulting to no. */
static boolean promptForYes(String promptText) {
checkState(
System.console() != null, "Unable to access stdin (are you running with bazel run?)");
String input = System.console().readLine(promptText + " (y/N): ");
// Null represents end-of-file (e.g. ^-D) so interpret that as a negative response.
return input != null && Ascii.toUpperCase(input).startsWith("Y");
}
}