| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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 org.apache.kafka.message; |
| |
| import com.fasterxml.jackson.annotation.JsonCreator; |
| import com.fasterxml.jackson.annotation.JsonProperty; |
| |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Objects; |
| |
| public final class StructSpec { |
| private final String name; |
| |
| private final Versions versions; |
| |
| private final Versions deprecatedVersions; |
| |
| private final List<FieldSpec> fields; |
| |
| private final boolean hasKeys; |
| |
| @JsonCreator |
| public StructSpec(@JsonProperty("name") String name, |
| @JsonProperty("versions") String versions, |
| @JsonProperty("deprecatedVersions") String deprecatedVersions, |
| @JsonProperty("fields") List<FieldSpec> fields) { |
| this.name = Objects.requireNonNull(name); |
| this.versions = Versions.parse(versions, null); |
| if (this.versions == null) { |
| throw new RuntimeException("You must specify the version of the " + |
| name + " structure."); |
| } |
| this.deprecatedVersions = Versions.parse(deprecatedVersions, Versions.NONE); |
| ArrayList<FieldSpec> newFields = new ArrayList<>(); |
| if (fields != null) { |
| // Each field should have a unique tag ID (if the field has a tag ID). |
| HashSet<Integer> tags = new HashSet<>(); |
| for (FieldSpec field : fields) { |
| if (field.tag().isPresent()) { |
| if (tags.contains(field.tag().get())) { |
| throw new RuntimeException("In " + name + ", field " + field.name() + |
| " has a duplicate tag ID " + field.tag().get() + ". All tags IDs " + |
| "must be unique."); |
| } |
| tags.add(field.tag().get()); |
| } |
| newFields.add(field); |
| } |
| // Tag IDs should be contiguous and start at 0. This optimizes space on the wire, |
| // since larger numbers take more space. |
| for (int i = 0; i < tags.size(); i++) { |
| if (!tags.contains(i)) { |
| throw new RuntimeException("In " + name + ", the tag IDs are not " + |
| "contiguous. Make use of tag " + i + " before using any " + |
| "higher tag IDs."); |
| } |
| } |
| } |
| this.fields = Collections.unmodifiableList(newFields); |
| this.hasKeys = this.fields.stream().anyMatch(f -> f.mapKey()); |
| } |
| |
| @JsonProperty |
| public String name() { |
| return name; |
| } |
| |
| public Versions versions() { |
| return versions; |
| } |
| |
| @JsonProperty |
| public String versionsString() { |
| return versions.toString(); |
| } |
| |
| public Versions deprecatedVersions() { |
| return deprecatedVersions; |
| } |
| |
| @JsonProperty |
| public List<FieldSpec> fields() { |
| return fields; |
| } |
| |
| boolean hasKeys() { |
| return hasKeys; |
| } |
| } |