io.mantisrx.server.master.store.KeyValueStore Maven / Gradle / Ivy
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/*
* Copyright 2019 Netflix, Inc.
*
* 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 io.mantisrx.server.master.store;
import io.mantisrx.server.core.IKeyValueStore;
import java.io.IOException;
import java.time.Duration;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import java.util.Map;
import java.util.SortedMap;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentSkipListMap;
/**
* The interface has moved to see:
* {@link IKeyValueStore}
* The move was to enable extensions to provide this implementation
* with a clean dependency graph.
* TODO(hmittal): Add an implementation using SQL, apache-cassandra
*/
@Deprecated
public interface KeyValueStore extends IKeyValueStore {
IKeyValueStore NO_OP = new NoopStore();
static IKeyValueStore noop() {
return NO_OP;
}
@Deprecated
static IKeyValueStore inMemory() { return new io.mantisrx.server.master.store.InMemoryStore();
}
/**
* See {@link io.mantisrx.server.master.store.NoopStore}
*/
@Deprecated
class NoopStore implements IKeyValueStore {
@Override
public Map> getAllRows(String tableName) {
return null;
}
@Override
public List getAllPartitionKeys(String tableName) {
return null;
}
@Override
public String get(String tableName, String partitionKey, String secondaryKey) {
return null;
}
@Override
public Map getAll(String tableName, String partitionKey) {
return null;
}
@Override
public boolean upsertAll(String tableName, String partitionKey, Map all, Duration ttl) {
return false;
}
@Override
public boolean delete(String tableName, String partitionKey, String secondaryKey) {
return false;
}
@Override
public boolean deleteAll(String tableName, String partitionKey) {
return false;
}
}
/**
* See {@link io.mantisrx.server.master.store.InMemoryStore}
*/
@Deprecated
class InMemoryStore implements IKeyValueStore {
// table -> partitionKey -> secondaryKey -> data
private final Map>> store = new ConcurrentHashMap<>();
@Override
public List getAllPartitionKeys(String tableName) {
if (store.get(tableName) == null) {
return Collections.emptyList();
} else{
return new ArrayList<>(store.get(tableName).keySet());
}
}
@Override
public Map getAll(String tableName, String partitionKey)
throws IOException {
if (store.get(tableName) == null) {
return Collections.emptyMap();
} else if (store.get(tableName).get(partitionKey) == null) {
return Collections.emptyMap();
} else {
return store.get(tableName).get(partitionKey);
}
}
@Override
public boolean upsertAll(String tableName, String partitionKey, Map all,
Duration ttl) throws IOException {
store.putIfAbsent(tableName, new ConcurrentHashMap<>());
SortedMap items =
store.get(tableName)
.getOrDefault(partitionKey, new ConcurrentSkipListMap<>(Comparator.reverseOrder()));
items.putAll(all);
store.get(tableName).put(partitionKey, items);
return true;
}
@Override
public boolean delete(String tableName, String partitionKey, String secondaryKey)
throws IOException {
if (store.containsKey(tableName) && // table exists
store.get(tableName).containsKey(partitionKey) && // partitionKey exists
store.get(tableName).get(partitionKey).containsKey(secondaryKey)) { // secondaryKey exists
store.get(tableName).get(partitionKey).remove(secondaryKey);
return true;
}
return false;
}
@Override
public boolean deleteAll(String tableName, String partitionKey) throws IOException {
if (store.containsKey(tableName) && // table exists
store.get(tableName).containsKey(partitionKey)) { // partitionKey exists
store.get(tableName).remove(partitionKey);
return true;
}
return false;
}
}
}