61 lines
2.5 KiB
Java
61 lines
2.5 KiB
Java
// Copyright (C) 2018 The Android Open Source Project
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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 com.google.gerrit.server.schema;
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import static com.google.common.base.Preconditions.checkArgument;
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import static com.google.common.collect.ImmutableSortedMap.toImmutableSortedMap;
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import static java.util.Comparator.naturalOrder;
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import com.google.common.collect.ImmutableSortedMap;
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import com.google.common.primitives.Ints;
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import com.google.gerrit.common.UsedAt;
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import java.lang.reflect.InvocationTargetException;
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import java.util.Optional;
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import java.util.stream.Stream;
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public class NoteDbSchemaVersions {
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static final ImmutableSortedMap<Integer, Class<? extends NoteDbSchemaVersion>> ALL =
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// List all supported NoteDb schema versions here.
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Stream.of(Schema_180.class, Schema_181.class)
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.collect(toImmutableSortedMap(naturalOrder(), v -> guessVersion(v).get(), v -> v));
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public static final int FIRST = ALL.firstKey();
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public static final int LATEST = ALL.lastKey();
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// TODO(dborowitz): Migrate delete-project plugin to use this implementation.
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@UsedAt(UsedAt.Project.PLUGIN_DELETE_PROJECT)
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public static Optional<Integer> guessVersion(Class<?> c) {
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String prefix = "Schema_";
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if (!c.getSimpleName().startsWith(prefix)) {
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return Optional.empty();
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}
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return Optional.ofNullable(Ints.tryParse(c.getSimpleName().substring(prefix.length())));
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}
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public static NoteDbSchemaVersion get(
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ImmutableSortedMap<Integer, Class<? extends NoteDbSchemaVersion>> schemaVersions, int i) {
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Class<? extends NoteDbSchemaVersion> clazz = schemaVersions.get(i);
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checkArgument(clazz != null, "Schema version not found: %s", i);
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try {
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return clazz.getDeclaredConstructor().newInstance();
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} catch (InstantiationException
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| IllegalAccessException
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| NoSuchMethodException
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| InvocationTargetException e) {
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throw new IllegalStateException("failed to invoke constructor on " + clazz.getName(), e);
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}
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}
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}
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