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79 lines
3.4 KiB
Java
79 lines
3.4 KiB
Java
// Copyright 2017 The Nomulus Authors. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package google.registry.tmch;
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import static com.google.common.base.Preconditions.checkArgument;
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import com.google.common.base.Splitter;
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import com.google.common.collect.ImmutableMap;
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import google.registry.model.tmch.ClaimsListShard;
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import java.util.List;
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import org.joda.time.DateTime;
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/**
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* Claims List (MarksDB DNL CSV) Parser.
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*
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* <p>This is a quick and dirty CSV parser made specifically for the DNL CSV format defined in the
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* TMCH specification. It doesn't support any fancy CSV features like quotes.
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*
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* @see <a href="http://tools.ietf.org/html/draft-lozano-tmch-func-spec-08#section-6.1">
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* TMCH functional specifications - DNL List file</a>
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*/
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public class ClaimsListParser {
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/**
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* Converts the lines from the DNL CSV file into a {@link ClaimsListShard} object.
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*
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* <p>Please note that this does <b>not</b> insert the object into Datastore.
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*/
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public static ClaimsListShard parse(List<String> lines) {
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ImmutableMap.Builder<String, String> builder = new ImmutableMap.Builder<>();
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// First line: <version>,<DNL List creation datetime>
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List<String> firstLine = Splitter.on(',').splitToList(lines.get(0));
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checkArgument(firstLine.size() == 2, String.format(
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"Line 1: Expected 2 elements, found %d", firstLine.size()));
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Integer version = Integer.valueOf(firstLine.get(0));
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DateTime creationTime = DateTime.parse(firstLine.get(1));
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checkArgument(version == 1, String.format(
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"Line 1: Expected version 1, found %d", version));
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// Second line contains headers: DNL,lookup-key,insertion-datetime
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List<String> secondLine = Splitter.on(',').splitToList(lines.get(1));
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checkArgument(secondLine.size() == 3, String.format(
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"Line 2: Expected 3 elements, found %d", secondLine.size()));
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checkArgument("DNL".equals(secondLine.get(0)), String.format(
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"Line 2: Expected header \"DNL\", found \"%s\"", secondLine.get(0)));
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checkArgument("lookup-key".equals(secondLine.get(1)), String.format(
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"Line 2: Expected header \"lookup-key\", found \"%s\"", secondLine.get(1)));
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checkArgument("insertion-datetime".equals(secondLine.get(2)), String.format(
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"Line 2: Expected header \"insertion-datetime\", found \"%s\"", secondLine.get(2)));
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// Subsequent lines: <DNL>,<lookup key>,<DNL insertion datetime>
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for (int i = 2; i < lines.size(); i++) {
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List<String> currentLine = Splitter.on(',').splitToList(lines.get(i));
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checkArgument(currentLine.size() == 3, String.format(
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"Line %d: Expected 3 elements, found %d", i + 1, currentLine.size()));
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String label = currentLine.get(0);
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String lookupKey = currentLine.get(1);
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DateTime.parse(currentLine.get(2)); // This is the insertion time, currently unused.
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builder.put(label, lookupKey);
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}
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return ClaimsListShard.create(creationTime, builder.build());
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}
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}
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