content: /*
   * 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.streams.state.internals;
  
  
  import org.apache.kafka.streams.StoreQueryParameters;
  import org.apache.kafka.streams.errors.InvalidStateStoreException;
  import org.apache.kafka.streams.processor.StateStore;
  import org.apache.kafka.streams.state.NoOpWindowStore;
  import org.apache.kafka.streams.state.QueryableStoreTypes;
  import org.apache.kafka.test.NoOpReadOnlyStore;
  import org.apache.kafka.test.StateStoreProviderStub;
  
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  
  import java.util.HashMap;
  
  import static org.hamcrest.MatcherAssert.assertThat;
  import static org.hamcrest.core.IsEqual.equalTo;
  import static org.junit.jupiter.api.Assertions.assertNotNull;
  import static org.junit.jupiter.api.Assertions.assertThrows;
  
  public class QueryableStoreProviderTest {
  
      private final String keyValueStore = "key-value";
      private final String windowStore = "window-store";
      private QueryableStoreProvider storeProvider;
      private HashMap<String, StateStore> globalStateStores;
      private final int numStateStorePartitions = 2;
  
      @BeforeEach
      public void before() {
          final StateStoreProviderStub theStoreProvider = new StateStoreProviderStub(false);
          for (int partition = 0; partition < numStateStorePartitions; partition++) {
              theStoreProvider.addStore(keyValueStore, partition, new NoOpReadOnlyStore<>());
              theStoreProvider.addStore(windowStore, partition, new NoOpWindowStore());
          }
          globalStateStores = new HashMap<>();
          storeProvider =
              new QueryableStoreProvider(
                  new GlobalStateStoreProvider(globalStateStores)
              );
          storeProvider.addStoreProviderForThread("thread1", theStoreProvider);
      }
  
      @Test
      public void shouldThrowExceptionIfKVStoreDoesntExist() {
          assertThrows(InvalidStateStoreException.class, () -> storeProvider.store(
              StoreQueryParameters.fromNameAndType("not-a-store", QueryableStoreTypes.keyValueStore())).get("1"));
      }
  
      @Test
      public void shouldThrowExceptionIfWindowStoreDoesntExist() {
          assertThrows(InvalidStateStoreException.class, () -> storeProvider.store(
              StoreQueryParameters.fromNameAndType("not-a-store", QueryableStoreTypes.windowStore())).fetch("1", System.currentTimeMillis()));
      }
  
      @Test
      public void shouldReturnKVStoreWhenItExists() {
          assertNotNull(storeProvider.store(StoreQueryParameters.fromNameAndType(keyValueStore, QueryableStoreTypes.keyValueStore())));
      }
  
      @Test
      public void shouldReturnWindowStoreWhenItExists() {
          assertNotNull(storeProvider.store(StoreQueryParameters.fromNameAndType(windowStore, QueryableStoreTypes.windowStore())));
      }
  
      @Test
      public void shouldThrowExceptionWhenLookingForWindowStoreWithDifferentType() {
          assertThrows(InvalidStateStoreException.class, () -> storeProvider.store(StoreQueryParameters.fromNameAndType(windowStore,
              QueryableStoreTypes.keyValueStore())).get("1"));
      }
  
      @Test
      public void shouldThrowExceptionWhenLookingForKVStoreWithDifferentType() {
          assertThrows(InvalidStateStoreException.class, () -> storeProvider.store(StoreQueryParameters.fromNameAndType(keyValueStore,
              QueryableStoreTypes.windowStore())).fetch("1", System.currentTimeMillis()));
      }
  
      @Test
      public void shouldFindGlobalStores() {
          globalStateStores.put("global", new NoOpReadOnlyStore<>());
          assertNotNull(storeProvider.store(StoreQueryParameters.fromNameAndType("global", QueryableStoreTypes.keyValueStore())));
      }
  
      @Test
      public void shouldReturnKVStoreWithPartitionWhenItExists() {
          assertNotNull(storeProvider.store(StoreQueryParameters.fromNameAndType(keyValueStore, QueryableStoreTypes.keyValueStore()).withPartition(numStateStorePartitions - 1)));
      }
  
      @Test
      public void shouldThrowExceptionWhenKVStoreWithPartitionDoesntExists() {
          final int partition = numStateStorePartitions + 1;
          final InvalidStateStoreException thrown = assertThrows(InvalidStateStoreException.class, () ->
                  storeProvider.store(
                          StoreQueryParameters
                                  .fromNameAndType(keyValueStore, QueryableStoreTypes.keyValueStore())
                                  .withPartition(partition)).get("1")
          );
          assertThat(thrown.getMessage(), equalTo(String.format("The specified partition %d for store %s does not exist.", partition, keyValueStore)));
      }
  
      @Test
      public void shouldReturnWindowStoreWithPartitionWhenItExists() {
          assertNotNull(storeProvider.store(StoreQueryParameters.fromNameAndType(windowStore, QueryableStoreTypes.windowStore()).withPartition(numStateStorePartitions - 1)));
      }
  
      @Test
      public void shouldThrowExceptionWhenWindowStoreWithPartitionDoesntExists() {
          final int partition = numStateStorePartitions + 1;
          final InvalidStateStoreException thrown = assertThrows(InvalidStateStoreException.class, () ->
                  storeProvider.store(
                          StoreQueryParameters
                                  .fromNameAndType(windowStore, QueryableStoreTypes.windowStore())
                                  .withPartition(partition)).fetch("1", System.currentTimeMillis())
          );
          assertThat(thrown.getMessage(), equalTo(String.format("The specified partition %d for store %s does not exist.", partition, windowStore)));
      }
  }