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// Copyright (C) 2017 The Android Open Source Project
//
// 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 com.google.gerrit.testing;
import static com.google.common.base.Preconditions.checkArgument;
import static java.util.stream.Collectors.toMap;
import com.google.common.annotations.VisibleForTesting;
import com.google.common.base.Splitter;
import com.google.common.base.Strings;
import com.google.common.collect.ImmutableList;
import com.google.common.primitives.Ints;
import com.google.gerrit.index.Schema;
import com.google.gerrit.index.SchemaDefinitions;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.SortedMap;
import org.eclipse.jgit.lib.Config;
public class IndexVersions {
static final String ALL = "all";
static final String CURRENT = "current";
static final String PREVIOUS = "previous";
/**
* Returns the index versions from {@link IndexVersions#get(SchemaDefinitions)} without the latest
* schema version.
*
* @param schemaDef the schema definition
* @return the index versions from {@link IndexVersions#get(SchemaDefinitions)} without the latest
* schema version
*/
public static <V> ImmutableList<Integer> getWithoutLatest(SchemaDefinitions<V> schemaDef) {
List<Integer> schemaVersions = new ArrayList<>(get(schemaDef));
schemaVersions.remove(Integer.valueOf(schemaDef.getLatest().getVersion()));
return ImmutableList.copyOf(schemaVersions);
}
/**
* Returns the schema versions against which the query tests should be executed.
*
* <p>The schema versions are read from the '<schema-name>_INDEX_VERSIONS' env var if it is set,
* e.g. 'ACCOUNTS_INDEX_VERSIONS', 'CHANGES_INDEX_VERSIONS', 'GROUPS_INDEX_VERSIONS'.
*
* <p>If schema versions were not specified by an env var, they are read from the
* 'gerrit.index.<schema-name>.versions' system property, e.g. 'gerrit.index.accounts.version',
* 'gerrit.index.changes.version', 'gerrit.index.groups.version'.
*
* <p>As value a comma-separated list of schema versions is expected. {@code current} can be used
* for the latest schema version and {@code previous} is resolved to the second last schema
* version. Alternatively the value can also be {@code all} for all schema versions.
*
* <p>If schema versions were neither specified by an env var nor by a system property, the
* current and the second last schema versions are returned. If there is no other schema version
* than the current schema version, only the current schema version is returned.
*
* @param schemaDef the schema definition
* @return the schema versions against which the query tests should be executed
* @throws IllegalArgumentException if the value of the env var or system property is invalid or
* if any of the specified schema versions doesn't exist
*/
public static <V> ImmutableList<Integer> get(SchemaDefinitions<V> schemaDef) {
String envVar = schemaDef.getName().toUpperCase() + "_INDEX_VERSIONS";
String value = System.getenv(envVar);
if (!Strings.isNullOrEmpty(value)) {
return get(schemaDef, "env variable " + envVar, value);
}
String systemProperty = "gerrit.index." + schemaDef.getName().toLowerCase() + ".versions";
value = System.getProperty(systemProperty);
return get(schemaDef, "system property " + systemProperty, value);
}
@VisibleForTesting
static <V> ImmutableList<Integer> get(SchemaDefinitions<V> schemaDef, String name, String value) {
if (value != null) {
value = value.trim();
}
SortedMap<Integer, Schema<V>> schemas = schemaDef.getSchemas();
if (!Strings.isNullOrEmpty(value)) {
if (ALL.equals(value)) {
return ImmutableList.copyOf(schemas.keySet());
}
List<Integer> versions = new ArrayList<>();
for (String s : Splitter.on(',').trimResults().split(value)) {
if (CURRENT.equals(s)) {
versions.add(schemaDef.getLatest().getVersion());
} else if (PREVIOUS.equals(s)) {
checkArgument(schemaDef.getPrevious() != null, "previous version does not exist");
versions.add(schemaDef.getPrevious().getVersion());
} else {
Integer version = Ints.tryParse(s);
checkArgument(version != null, "Invalid value for %s: %s", name, s);
checkArgument(
schemas.containsKey(version),
"Index version %s that was specified by %s not found." + " Possible versions are: %s",
version,
name,
schemas.keySet());
versions.add(version);
}
}
return ImmutableList.copyOf(versions);
}
List<Integer> schemaVersions = new ArrayList<>(2);
if (schemaDef.getPrevious() != null) {
schemaVersions.add(schemaDef.getPrevious().getVersion());
}
schemaVersions.add(schemaDef.getLatest().getVersion());
return ImmutableList.copyOf(schemaVersions);
}
public static <V> Map<String, Config> asConfigMap(
SchemaDefinitions<V> schemaDef,
List<Integer> schemaVersions,
String testSuiteNamePrefix,
Config baseConfig) {
return schemaVersions
.stream()
.collect(
toMap(
i -> testSuiteNamePrefix + i,
i -> {
Config cfg = baseConfig;
cfg.setInt(
"index", "lucene", schemaDef.getName().toLowerCase() + "TestVersion", i);
return cfg;
}));
}
}
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