Migrate getCreatePrice() call to DomainPricingLogic

Swap all calls to TldSpecificLogicProxy.getCreatePrice() to the counterpart in
DomainPricingLogic. Also makes necessary changes for testing to work, including
fake implementations of DomainPricingCustomLogic and
DomainCreateLofwCustomLogic.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=140754334

javatests/google/registry/flows/custom/TestDomainPricingCustomLogic.java

@@ -0,0 +1,73 @@
+// Copyright 2016 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.flows.custom;
+
+import static com.google.common.base.Preconditions.checkArgument;
+
+import com.google.common.base.Ascii;
+import com.google.common.base.Splitter;
+import com.google.common.collect.Iterables;
+import com.google.common.net.InternetDomainName;
+import google.registry.flows.EppException;
+import google.registry.flows.SessionMetadata;
+import google.registry.flows.domain.DomainPricingLogic;
+import google.registry.model.domain.fee.BaseFee;
+import google.registry.model.domain.fee.BaseFee.FeeType;
+import google.registry.model.domain.fee.Credit;
+import google.registry.model.domain.fee.Fee;
+import google.registry.model.eppinput.EppInput;
+import java.math.BigDecimal;
+import java.util.List;
+
+/** A class to customize {@link DomainPricingLogic} for testing. */
+public class TestDomainPricingCustomLogic extends DomainPricingCustomLogic {
+
+  protected TestDomainPricingCustomLogic(EppInput eppInput, SessionMetadata sessionMetadata) {
+    super(eppInput, sessionMetadata);
+  }
+
+  private static BaseFee domainNameToFeeOrCredit(InternetDomainName domainName) {
+    // The second-level domain should be of the form "description-price", where description is the
+    // description string of the fee or credit, and price is the price (credit if negative, fee
+    // otherwise). To make sure this is a valid domain name, don't use any spaces, and limit prices
+    // to integers. Don't use a two-character description for credits, since it is illegal to have
+    // both the third and fourth characters of a domain name label be hyphens.
+    List<String> components =
+        Splitter.on('-')
+            .limit(2)
+            .splitToList(Iterables.getFirst(Splitter.on('.').split(domainName.toString()), ""));
+    checkArgument(components.size() == 2, "Domain name must be of the form description-price.tld");
+    int price = Integer.parseInt(components.get(1));
+    if (price < 0) {
+      return Credit.create(
+          new BigDecimal(price), FeeType.valueOf(Ascii.toUpperCase(components.get(0))));
+    } else {
+      return Fee.create(
+          new BigDecimal(price), FeeType.valueOf(Ascii.toUpperCase(components.get(0))));
+    }
+  }
+
+  /** A hook that customizes create price. */
+  @Override
+  public BaseFee customizeCreatePrice(CreatePriceParameters createPriceParameters)
+      throws EppException {
+    InternetDomainName domainName = createPriceParameters.domainName();
+    if (domainName.parent().toString().equals("flags")) {
+      return domainNameToFeeOrCredit(domainName);
+    } else {
+      return createPriceParameters.createFee();
+    }
+  }
+}