Example usage for java.util.concurrent CompletableFuture completedFuture

Introduction

In this page you can find the example usage for java.util.concurrent CompletableFuture completedFuture.

Prototype

public static <U> CompletableFuture<U> completedFuture(U value)

Source Link

Document

Returns a new CompletableFuture that is already completed with the given value.

Usage

From source file:org.apache.hadoop.hbase.client.RawAsyncHBaseAdmin.java

@Override
public CompletableFuture<List<TableDescriptor>> listTableDescriptors(List<TableName> tableNames) {
    Preconditions.checkNotNull(tableNames,
            "tableNames is null. If you don't specify tableNames, " + "use listTables(boolean) instead");
    if (tableNames.isEmpty()) {
        return CompletableFuture.completedFuture(Collections.emptyList());
    }/* w w  w .j av a  2 s  .c o m*/
    return getTableDescriptors(RequestConverter.buildGetTableDescriptorsRequest(tableNames));
}

From source file:org.apache.hadoop.hbase.client.RawAsyncHBaseAdmin.java

@Override
public CompletableFuture<Boolean> isTableEnabled(TableName tableName) {
    if (TableName.isMetaTableName(tableName)) {
        return CompletableFuture.completedFuture(true);
    }/*from   ww  w. j av  a2  s  .c o  m*/
    CompletableFuture<Boolean> future = new CompletableFuture<>();
    addListener(AsyncMetaTableAccessor.getTableState(metaTable, tableName), (state, error) -> {
        if (error != null) {
            future.completeExceptionally(error);
            return;
        }
        if (state.isPresent()) {
            future.complete(state.get().inStates(TableState.State.ENABLED));
        } else {
            future.completeExceptionally(new TableNotFoundException(tableName));
        }
    });
    return future;
}

From source file:org.apache.hadoop.hbase.client.RawAsyncHBaseAdmin.java

@Override
public CompletableFuture<Boolean> isTableDisabled(TableName tableName) {
    if (TableName.isMetaTableName(tableName)) {
        return CompletableFuture.completedFuture(false);
    }//w  ww. j  ava2s. co m
    CompletableFuture<Boolean> future = new CompletableFuture<>();
    addListener(AsyncMetaTableAccessor.getTableState(metaTable, tableName), (state, error) -> {
        if (error != null) {
            future.completeExceptionally(error);
            return;
        }
        if (state.isPresent()) {
            future.complete(state.get().inStates(TableState.State.DISABLED));
        } else {
            future.completeExceptionally(new TableNotFoundException(tableName));
        }
    });
    return future;
}

From source file:org.apache.hadoop.hbase.client.RawAsyncHBaseAdmin.java

/**
 * Get the region info for the passed region name. The region name may be a full region name or
 * encoded region name. If the region does not found, then it'll throw an UnknownRegionException
 * wrapped by a {@link CompletableFuture}
 * @param regionNameOrEncodedRegionName/*from   w  w  w  .j  ava 2 s  .c o m*/
 * @return region info, wrapped by a {@link CompletableFuture}
 */
private CompletableFuture<RegionInfo> getRegionInfo(byte[] regionNameOrEncodedRegionName) {
    if (regionNameOrEncodedRegionName == null) {
        return failedFuture(new IllegalArgumentException("Passed region name can't be null"));
    }

    if (Bytes.equals(regionNameOrEncodedRegionName, RegionInfoBuilder.FIRST_META_REGIONINFO.getRegionName())
            || Bytes.equals(regionNameOrEncodedRegionName,
                    RegionInfoBuilder.FIRST_META_REGIONINFO.getEncodedNameAsBytes())) {
        return CompletableFuture.completedFuture(RegionInfoBuilder.FIRST_META_REGIONINFO);
    }

    CompletableFuture<RegionInfo> future = new CompletableFuture<>();
    addListener(getRegionLocation(regionNameOrEncodedRegionName), (location, err) -> {
        if (err != null) {
            future.completeExceptionally(err);
        } else {
            future.complete(location.getRegion());
        }
    });
    return future;
}

From source file:org.apache.james.backends.cassandra.migration.CassandraMigrationServiceTest.java

@Before
public void setUp() throws Exception {
    schemaVersionDAO = mock(CassandraSchemaVersionDAO.class);
    when(schemaVersionDAO.updateVersion(any())).thenReturn(CompletableFuture.completedFuture(null));

    successfulMigration = mock(Migration.class);
    when(successfulMigration.run()).thenReturn(Migration.Result.COMPLETED);
    Map<SchemaVersion, Migration> allMigrationClazz = ImmutableMap.<SchemaVersion, Migration>builder()
            .put(OLDER_VERSION, successfulMigration).put(CURRENT_VERSION, successfulMigration)
            .put(LATEST_VERSION, successfulMigration).build();
    testee = new CassandraMigrationService(schemaVersionDAO, allMigrationClazz, LATEST_VERSION);
    executorService = Executors.newFixedThreadPool(2, NamedThreadFactory.withClassName(getClass()));
}

From source file:org.apache.james.backends.cassandra.migration.CassandraMigrationServiceTest.java

@Test
public void getCurrentVersionShouldReturnCurrentVersion() {
    when(schemaVersionDAO.getCurrentSchemaVersion())
            .thenReturn(CompletableFuture.completedFuture(Optional.of(CURRENT_VERSION)));

    assertThat(testee.getCurrentVersion()).contains(CURRENT_VERSION);
}

From source file:org.apache.james.backends.cassandra.migration.CassandraMigrationServiceTest.java

@Test
public void upgradeToVersionShouldNotThrowWhenCurrentVersionIsUpToDate() {
    when(schemaVersionDAO.getCurrentSchemaVersion())
            .thenReturn(CompletableFuture.completedFuture(Optional.of(CURRENT_VERSION)));

    assertThat(testee.upgradeToVersion(OLDER_VERSION).run()).isEqualTo(Task.Result.COMPLETED);
}

From source file:org.apache.james.backends.cassandra.migration.CassandraMigrationServiceTest.java

@Test
public void upgradeToVersionShouldUpdateToVersion() {
    when(schemaVersionDAO.getCurrentSchemaVersion())
            .thenReturn(CompletableFuture.completedFuture(Optional.of(OLDER_VERSION)));

    testee.upgradeToVersion(CURRENT_VERSION).run();

    verify(schemaVersionDAO, times(1)).updateVersion(eq(CURRENT_VERSION));
}

From source file:org.apache.james.backends.cassandra.migration.CassandraMigrationServiceTest.java

@Test
public void upgradeToLastVersionShouldNotThrowWhenVersionIsUpToDate() {

    when(schemaVersionDAO.getCurrentSchemaVersion())
            .thenReturn(CompletableFuture.completedFuture(Optional.of(LATEST_VERSION)));

    assertThat(testee.upgradeToLastVersion().run()).isEqualTo(Task.Result.COMPLETED);
}

From source file:org.apache.james.backends.cassandra.migration.CassandraMigrationServiceTest.java

@Test
public void upgradeToLastVersionShouldUpdateToLatestVersion() {
    when(schemaVersionDAO.getCurrentSchemaVersion())
            .thenReturn(CompletableFuture.completedFuture(Optional.of(OLDER_VERSION)));

    testee.upgradeToLastVersion().run();

    verify(schemaVersionDAO, times(1)).updateVersion(eq(LATEST_VERSION));
}