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Java idiomatic client for Google Cloud Spanner.
/*
* Copyright 2017 Google LLC
*
* 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.cloud.spanner;
import com.google.api.core.ApiFunction;
import com.google.api.core.BetaApi;
import com.google.api.core.InternalApi;
import com.google.api.core.ObsoleteApi;
import com.google.api.gax.core.ExecutorProvider;
import com.google.api.gax.core.GaxProperties;
import com.google.api.gax.grpc.GrpcCallContext;
import com.google.api.gax.grpc.GrpcInterceptorProvider;
import com.google.api.gax.longrunning.OperationTimedPollAlgorithm;
import com.google.api.gax.retrying.RetrySettings;
import com.google.api.gax.rpc.ApiCallContext;
import com.google.api.gax.rpc.TransportChannelProvider;
import com.google.api.gax.tracing.ApiTracerFactory;
import com.google.api.gax.tracing.BaseApiTracerFactory;
import com.google.api.gax.tracing.OpencensusTracerFactory;
import com.google.cloud.NoCredentials;
import com.google.cloud.ServiceDefaults;
import com.google.cloud.ServiceOptions;
import com.google.cloud.ServiceRpc;
import com.google.cloud.TransportOptions;
import com.google.cloud.grpc.GcpManagedChannelOptions;
import com.google.cloud.grpc.GrpcTransportOptions;
import com.google.cloud.spanner.Options.DirectedReadOption;
import com.google.cloud.spanner.Options.QueryOption;
import com.google.cloud.spanner.Options.UpdateOption;
import com.google.cloud.spanner.admin.database.v1.DatabaseAdminSettings;
import com.google.cloud.spanner.admin.database.v1.stub.DatabaseAdminStubSettings;
import com.google.cloud.spanner.admin.instance.v1.InstanceAdminSettings;
import com.google.cloud.spanner.admin.instance.v1.stub.InstanceAdminStubSettings;
import com.google.cloud.spanner.spi.SpannerRpcFactory;
import com.google.cloud.spanner.spi.v1.GapicSpannerRpc;
import com.google.cloud.spanner.spi.v1.SpannerRpc;
import com.google.cloud.spanner.v1.SpannerSettings;
import com.google.cloud.spanner.v1.stub.SpannerStubSettings;
import com.google.common.annotations.VisibleForTesting;
import com.google.common.base.MoreObjects;
import com.google.common.base.Preconditions;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.ImmutableSet;
import com.google.common.util.concurrent.ThreadFactoryBuilder;
import com.google.spanner.v1.DirectedReadOptions;
import com.google.spanner.v1.ExecuteSqlRequest;
import com.google.spanner.v1.ExecuteSqlRequest.QueryOptions;
import com.google.spanner.v1.SpannerGrpc;
import io.grpc.CallCredentials;
import io.grpc.CompressorRegistry;
import io.grpc.Context;
import io.grpc.ExperimentalApi;
import io.grpc.ManagedChannelBuilder;
import io.grpc.MethodDescriptor;
import io.opentelemetry.api.GlobalOpenTelemetry;
import io.opentelemetry.api.OpenTelemetry;
import io.opentelemetry.api.common.Attributes;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.ScheduledThreadPoolExecutor;
import java.util.concurrent.ThreadFactory;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicInteger;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import javax.annotation.concurrent.GuardedBy;
import org.threeten.bp.Duration;
/** Options for the Cloud Spanner service. */
public class SpannerOptions extends ServiceOptions {
private static final long serialVersionUID = 2789571558532701170L;
private static SpannerEnvironment environment = SpannerEnvironmentImpl.INSTANCE;
private static boolean enableOpenCensusMetrics = true;
private static boolean enableOpenTelemetryMetrics = false;
private static final String JDBC_API_CLIENT_LIB_TOKEN = "sp-jdbc";
private static final String HIBERNATE_API_CLIENT_LIB_TOKEN = "sp-hib";
private static final String LIQUIBASE_API_CLIENT_LIB_TOKEN = "sp-liq";
private static final String PG_ADAPTER_CLIENT_LIB_TOKEN = "pg-adapter";
private static final String API_SHORT_NAME = "Spanner";
private static final String DEFAULT_HOST = "https://spanner.googleapis.com";
private static final ImmutableSet SCOPES =
ImmutableSet.of(
"https://www.googleapis.com/auth/spanner.admin",
"https://www.googleapis.com/auth/spanner.data");
static final int MAX_CHANNELS = 256;
@VisibleForTesting static final int DEFAULT_CHANNELS = 4;
// Set the default number of channels to GRPC_GCP_ENABLED_DEFAULT_CHANNELS when gRPC-GCP extension
// is enabled, to make sure there are sufficient channels available to move the sessions to a
// different channel if a network connection in a particular channel fails.
@VisibleForTesting static final int GRPC_GCP_ENABLED_DEFAULT_CHANNELS = 8;
private final TransportChannelProvider channelProvider;
@SuppressWarnings("rawtypes")
private final ApiFunction channelConfigurator;
private final GrpcInterceptorProvider interceptorProvider;
private final SessionPoolOptions sessionPoolOptions;
private final int prefetchChunks;
private final DecodeMode decodeMode;
private final int numChannels;
private final String transportChannelExecutorThreadNameFormat;
private final String databaseRole;
private final ImmutableMap sessionLabels;
private final SpannerStubSettings spannerStubSettings;
private final InstanceAdminStubSettings instanceAdminStubSettings;
private final DatabaseAdminStubSettings databaseAdminStubSettings;
private final Duration partitionedDmlTimeout;
private final boolean grpcGcpExtensionEnabled;
private final GcpManagedChannelOptions grpcGcpOptions;
private final boolean autoThrottleAdministrativeRequests;
private final RetrySettings retryAdministrativeRequestsSettings;
private final boolean trackTransactionStarter;
/**
* These are the default {@link QueryOptions} defined by the user on this {@link SpannerOptions}.
*/
private final Map defaultQueryOptions;
/** These are the default {@link QueryOptions} defined in environment variables on this system. */
private final QueryOptions envQueryOptions;
/**
* These are the merged query options of the {@link QueryOptions} set on this {@link
* SpannerOptions} and the {@link QueryOptions} in the environment variables. Options specified in
* environment variables take precedence above options specified in the {@link SpannerOptions}
* instance.
*/
private final Map mergedQueryOptions;
private final CallCredentialsProvider callCredentialsProvider;
private final CloseableExecutorProvider asyncExecutorProvider;
private final String compressorName;
private final boolean leaderAwareRoutingEnabled;
private final boolean attemptDirectPath;
private final DirectedReadOptions directedReadOptions;
private final boolean useVirtualThreads;
private final OpenTelemetry openTelemetry;
private final boolean enableApiTracing;
private final boolean enableExtendedTracing;
enum TracingFramework {
OPEN_CENSUS,
OPEN_TELEMETRY
}
private static final Object lock = new Object();
@GuardedBy("lock")
private static TracingFramework activeTracingFramework;
/** Interface that can be used to provide {@link CallCredentials} to {@link SpannerOptions}. */
public interface CallCredentialsProvider {
/** Return the {@link CallCredentials} to use for a gRPC call. */
CallCredentials getCallCredentials();
}
/** Context key for the {@link CallContextConfigurator} to use. */
public static final Context.Key CALL_CONTEXT_CONFIGURATOR_KEY =
Context.key("call-context-configurator");
/**
* {@link CallContextConfigurator} can be used to modify the {@link ApiCallContext} for one or
* more specific RPCs. This can be used to set specific timeout value for RPCs or use specific
* {@link CallCredentials} for an RPC. The {@link CallContextConfigurator} must be set as a value
* on the {@link Context} using the {@link SpannerOptions#CALL_CONTEXT_CONFIGURATOR_KEY} key.
*
* This API is meant for advanced users. Most users should instead use the {@link
* SpannerCallContextTimeoutConfigurator} for setting timeouts per RPC.
*
*
Example usage:
*
*
{@code
* CallContextConfigurator configurator =
* new CallContextConfigurator() {
* public ApiCallContext configure(
* ApiCallContext context, ReqT request, MethodDescriptor method) {
* if (method == SpannerGrpc.getExecuteBatchDmlMethod()) {
* return GrpcCallContext.createDefault()
* .withCallOptions(CallOptions.DEFAULT.withDeadlineAfter(60L, TimeUnit.SECONDS));
* }
* return null;
* }
* };
* Context context =
* Context.current().withValue(SpannerOptions.CALL_CONTEXT_CONFIGURATOR_KEY, configurator);
* context.run(
* () -> {
* try {
* client
* .readWriteTransaction()
* .run(
* new TransactionCallable() {
* public long[] run(TransactionContext transaction) throws Exception {
* return transaction.batchUpdate(
* ImmutableList.of(statement1, statement2));
* }
* });
* } catch (SpannerException e) {
* if (e.getErrorCode() == ErrorCode.DEADLINE_EXCEEDED) {
* // handle timeout exception.
* }
* }
* }
* }
*/
public interface CallContextConfigurator {
/**
* Configure a {@link ApiCallContext} for a specific RPC call.
*
* @param context The default context. This can be used to inspect the current values.
* @param request The request that will be sent.
* @param method The method that is being called.
* @return An {@link ApiCallContext} that will be merged with the default {@link
* ApiCallContext}. If null is returned, no changes to the default {@link
* ApiCallContext} will be made.
*/
@Nullable
ApiCallContext configure(
ApiCallContext context, ReqT request, MethodDescriptor method);
}
private enum SpannerMethod {
COMMIT {
@Override
boolean isMethod(ReqT request, MethodDescriptor method) {
return method == SpannerGrpc.getCommitMethod();
}
},
ROLLBACK {
@Override
boolean isMethod(ReqT request, MethodDescriptor method) {
return method == SpannerGrpc.getRollbackMethod();
}
},
EXECUTE_QUERY {
@Override
boolean isMethod(ReqT request, MethodDescriptor method) {
// This also matches with Partitioned DML calls, but that call will override any timeout
// settings anyway.
return method == SpannerGrpc.getExecuteStreamingSqlMethod();
}
},
READ {
@Override
boolean isMethod(ReqT request, MethodDescriptor method) {
return method == SpannerGrpc.getStreamingReadMethod();
}
},
EXECUTE_UPDATE {
@Override
boolean isMethod(ReqT request, MethodDescriptor method) {
if (method == SpannerGrpc.getExecuteSqlMethod()) {
ExecuteSqlRequest sqlRequest = (ExecuteSqlRequest) request;
return sqlRequest.getSeqno() != 0L;
}
return false;
}
},
BATCH_UPDATE {
@Override
boolean isMethod(ReqT request, MethodDescriptor method) {
return method == SpannerGrpc.getExecuteBatchDmlMethod();
}
},
PARTITION_QUERY {
@Override
boolean isMethod(ReqT request, MethodDescriptor method) {
return method == SpannerGrpc.getPartitionQueryMethod();
}
},
PARTITION_READ {
@Override
boolean isMethod(ReqT request, MethodDescriptor method) {
return method == SpannerGrpc.getPartitionReadMethod();
}
};
abstract boolean isMethod(ReqT request, MethodDescriptor method);
static SpannerMethod valueOf(ReqT request, MethodDescriptor method) {
for (SpannerMethod m : SpannerMethod.values()) {
if (m.isMethod(request, method)) {
return m;
}
}
return null;
}
}
/**
* Helper class to configure timeouts for specific Spanner RPCs. The {@link
* SpannerCallContextTimeoutConfigurator} must be set as a value on the {@link Context} using the
* {@link SpannerOptions#CALL_CONTEXT_CONFIGURATOR_KEY} key.
*
* Example usage:
*
*
{@code
* // Create a context with a ExecuteQuery timeout of 10 seconds.
* Context context =
* Context.current()
* .withValue(
* SpannerOptions.CALL_CONTEXT_CONFIGURATOR_KEY,
* SpannerCallContextTimeoutConfigurator.create()
* .withExecuteQueryTimeout(Duration.ofSeconds(10L)));
* context.run(
* () -> {
* try (ResultSet rs =
* client
* .singleUse()
* .executeQuery(
* Statement.of(
* "SELECT SingerId, FirstName, LastName FROM Singers ORDER BY LastName"))) {
* while (rs.next()) {
* System.out.printf("%d %s %s%n", rs.getLong(0), rs.getString(1), rs.getString(2));
* }
* } catch (SpannerException e) {
* if (e.getErrorCode() == ErrorCode.DEADLINE_EXCEEDED) {
* // Handle timeout.
* }
* }
* }
* }
*/
public static class SpannerCallContextTimeoutConfigurator implements CallContextConfigurator {
private Duration commitTimeout;
private Duration rollbackTimeout;
private Duration executeQueryTimeout;
private Duration executeUpdateTimeout;
private Duration batchUpdateTimeout;
private Duration readTimeout;
private Duration partitionQueryTimeout;
private Duration partitionReadTimeout;
public static SpannerCallContextTimeoutConfigurator create() {
return new SpannerCallContextTimeoutConfigurator();
}
private SpannerCallContextTimeoutConfigurator() {}
@Override
public ApiCallContext configure(
ApiCallContext context, ReqT request, MethodDescriptor method) {
SpannerMethod spannerMethod = SpannerMethod.valueOf(request, method);
if (spannerMethod == null) {
return null;
}
switch (SpannerMethod.valueOf(request, method)) {
case BATCH_UPDATE:
return batchUpdateTimeout == null
? null
: GrpcCallContext.createDefault().withTimeout(batchUpdateTimeout);
case COMMIT:
return commitTimeout == null
? null
: GrpcCallContext.createDefault().withTimeout(commitTimeout);
case EXECUTE_QUERY:
return executeQueryTimeout == null
? null
: GrpcCallContext.createDefault()
.withTimeout(executeQueryTimeout)
.withStreamWaitTimeout(executeQueryTimeout);
case EXECUTE_UPDATE:
return executeUpdateTimeout == null
? null
: GrpcCallContext.createDefault().withTimeout(executeUpdateTimeout);
case PARTITION_QUERY:
return partitionQueryTimeout == null
? null
: GrpcCallContext.createDefault().withTimeout(partitionQueryTimeout);
case PARTITION_READ:
return partitionReadTimeout == null
? null
: GrpcCallContext.createDefault().withTimeout(partitionReadTimeout);
case READ:
return readTimeout == null
? null
: GrpcCallContext.createDefault()
.withTimeout(readTimeout)
.withStreamWaitTimeout(readTimeout);
case ROLLBACK:
return rollbackTimeout == null
? null
: GrpcCallContext.createDefault().withTimeout(rollbackTimeout);
default:
}
return null;
}
public Duration getCommitTimeout() {
return commitTimeout;
}
public SpannerCallContextTimeoutConfigurator withCommitTimeout(Duration commitTimeout) {
this.commitTimeout = commitTimeout;
return this;
}
public Duration getRollbackTimeout() {
return rollbackTimeout;
}
public SpannerCallContextTimeoutConfigurator withRollbackTimeout(Duration rollbackTimeout) {
this.rollbackTimeout = rollbackTimeout;
return this;
}
public Duration getExecuteQueryTimeout() {
return executeQueryTimeout;
}
public SpannerCallContextTimeoutConfigurator withExecuteQueryTimeout(
Duration executeQueryTimeout) {
this.executeQueryTimeout = executeQueryTimeout;
return this;
}
public Duration getExecuteUpdateTimeout() {
return executeUpdateTimeout;
}
public SpannerCallContextTimeoutConfigurator withExecuteUpdateTimeout(
Duration executeUpdateTimeout) {
this.executeUpdateTimeout = executeUpdateTimeout;
return this;
}
public Duration getBatchUpdateTimeout() {
return batchUpdateTimeout;
}
public SpannerCallContextTimeoutConfigurator withBatchUpdateTimeout(
Duration batchUpdateTimeout) {
this.batchUpdateTimeout = batchUpdateTimeout;
return this;
}
public Duration getReadTimeout() {
return readTimeout;
}
public SpannerCallContextTimeoutConfigurator withReadTimeout(Duration readTimeout) {
this.readTimeout = readTimeout;
return this;
}
public Duration getPartitionQueryTimeout() {
return partitionQueryTimeout;
}
public SpannerCallContextTimeoutConfigurator withPartitionQueryTimeout(
Duration partitionQueryTimeout) {
this.partitionQueryTimeout = partitionQueryTimeout;
return this;
}
public Duration getPartitionReadTimeout() {
return partitionReadTimeout;
}
public SpannerCallContextTimeoutConfigurator withPartitionReadTimeout(
Duration partitionReadTimeout) {
this.partitionReadTimeout = partitionReadTimeout;
return this;
}
}
/** Default implementation of {@code SpannerFactory}. */
private static class DefaultSpannerFactory implements SpannerFactory {
private static final DefaultSpannerFactory INSTANCE = new DefaultSpannerFactory();
@Override
public Spanner create(SpannerOptions serviceOptions) {
return new SpannerImpl(serviceOptions);
}
}
/** Default implementation of {@code SpannerRpcFactory}. */
private static class DefaultSpannerRpcFactory implements SpannerRpcFactory {
private static final DefaultSpannerRpcFactory INSTANCE = new DefaultSpannerRpcFactory();
@Override
public ServiceRpc create(SpannerOptions options) {
return new GapicSpannerRpc(options);
}
}
private static final AtomicInteger DEFAULT_POOL_COUNT = new AtomicInteger();
/** {@link ExecutorProvider} that is used for {@link AsyncResultSet}. */
public interface CloseableExecutorProvider extends ExecutorProvider, AutoCloseable {
/** Overridden to suppress the throws declaration of the super interface. */
@Override
void close();
}
/**
* Implementation of {@link CloseableExecutorProvider} that uses a fixed single {@link
* ScheduledExecutorService}.
*/
public static class FixedCloseableExecutorProvider implements CloseableExecutorProvider {
private final ScheduledExecutorService executor;
private FixedCloseableExecutorProvider(ScheduledExecutorService executor) {
this.executor = Preconditions.checkNotNull(executor);
}
@Override
public void close() {
executor.shutdown();
}
@Override
public ScheduledExecutorService getExecutor() {
return executor;
}
@Override
public boolean shouldAutoClose() {
return false;
}
/** Creates a FixedCloseableExecutorProvider. */
public static FixedCloseableExecutorProvider create(ScheduledExecutorService executor) {
return new FixedCloseableExecutorProvider(executor);
}
}
/**
* Default {@link ExecutorProvider} for high-level async calls that need an executor. The default
* uses a cached thread pool containing a max of 8 threads. The pool is lazily initialized and
* will not create any threads if the user application does not use any async methods. It will
* also scale down the thread usage if the async load allows for that.
*/
@VisibleForTesting
static CloseableExecutorProvider createDefaultAsyncExecutorProvider() {
return createAsyncExecutorProvider(
getDefaultAsyncExecutorProviderCoreThreadCount(), 60L, TimeUnit.SECONDS);
}
@VisibleForTesting
static int getDefaultAsyncExecutorProviderCoreThreadCount() {
String propertyName = "com.google.cloud.spanner.async_num_core_threads";
String propertyValue = System.getProperty(propertyName, "8");
try {
int corePoolSize = Integer.parseInt(propertyValue);
if (corePoolSize < 0) {
throw SpannerExceptionFactory.newSpannerException(
ErrorCode.INVALID_ARGUMENT,
String.format(
"The value for %s must be >=0. Invalid value: %s", propertyName, propertyValue));
}
return corePoolSize;
} catch (NumberFormatException exception) {
throw SpannerExceptionFactory.newSpannerException(
ErrorCode.INVALID_ARGUMENT,
String.format(
"The %s system property must be a valid integer. The value %s could not be parsed as an integer.",
propertyName, propertyValue));
}
}
/**
* Creates a {@link CloseableExecutorProvider} that can be used as an {@link ExecutorProvider} for
* the async API. The {@link ExecutorProvider} will lazily create up to poolSize threads. The
* backing threads will automatically be shutdown if they have not been used during the keep-alive
* time. The backing threads are created as daemon threads.
*
* @param poolSize the maximum number of threads to create in the pool
* @param keepAliveTime the time that an unused thread in the pool should be kept alive
* @param unit the time unit used for the keepAliveTime
* @return a {@link CloseableExecutorProvider} that can be used for {@link
* SpannerOptions.Builder#setAsyncExecutorProvider(CloseableExecutorProvider)}
*/
public static CloseableExecutorProvider createAsyncExecutorProvider(
int poolSize, long keepAliveTime, TimeUnit unit) {
String format =
String.format("spanner-async-pool-%d-thread-%%d", DEFAULT_POOL_COUNT.incrementAndGet());
ThreadFactory threadFactory =
new ThreadFactoryBuilder().setDaemon(true).setNameFormat(format).build();
ScheduledThreadPoolExecutor executor = new ScheduledThreadPoolExecutor(poolSize, threadFactory);
executor.setKeepAliveTime(keepAliveTime, unit);
executor.allowCoreThreadTimeOut(true);
return FixedCloseableExecutorProvider.create(executor);
}
protected SpannerOptions(Builder builder) {
super(SpannerFactory.class, SpannerRpcFactory.class, builder, new SpannerDefaults());
numChannels = builder.numChannels == null ? DEFAULT_CHANNELS : builder.numChannels;
Preconditions.checkArgument(
numChannels >= 1 && numChannels <= MAX_CHANNELS,
"Number of channels must fall in the range [1, %s], found: %s",
MAX_CHANNELS,
numChannels);
transportChannelExecutorThreadNameFormat = builder.transportChannelExecutorThreadNameFormat;
channelProvider = builder.channelProvider;
channelConfigurator = builder.channelConfigurator;
interceptorProvider = builder.interceptorProvider;
sessionPoolOptions =
builder.sessionPoolOptions != null
? builder.sessionPoolOptions
: SessionPoolOptions.newBuilder().build();
prefetchChunks = builder.prefetchChunks;
decodeMode = builder.decodeMode;
databaseRole = builder.databaseRole;
sessionLabels = builder.sessionLabels;
try {
spannerStubSettings = builder.spannerStubSettingsBuilder.build();
instanceAdminStubSettings = builder.instanceAdminStubSettingsBuilder.build();
databaseAdminStubSettings = builder.databaseAdminStubSettingsBuilder.build();
} catch (IOException e) {
throw SpannerExceptionFactory.newSpannerException(e);
}
partitionedDmlTimeout = builder.partitionedDmlTimeout;
grpcGcpExtensionEnabled = builder.grpcGcpExtensionEnabled;
grpcGcpOptions = builder.grpcGcpOptions;
autoThrottleAdministrativeRequests = builder.autoThrottleAdministrativeRequests;
retryAdministrativeRequestsSettings = builder.retryAdministrativeRequestsSettings;
trackTransactionStarter = builder.trackTransactionStarter;
defaultQueryOptions = builder.defaultQueryOptions;
envQueryOptions = builder.getEnvironmentQueryOptions();
if (envQueryOptions.equals(QueryOptions.getDefaultInstance())) {
this.mergedQueryOptions = ImmutableMap.copyOf(builder.defaultQueryOptions);
} else {
// Merge all specific database options with the environment options.
Map merged = new HashMap<>(builder.defaultQueryOptions);
for (Entry entry : builder.defaultQueryOptions.entrySet()) {
merged.put(entry.getKey(), entry.getValue().toBuilder().mergeFrom(envQueryOptions).build());
}
this.mergedQueryOptions = ImmutableMap.copyOf(merged);
}
callCredentialsProvider = builder.callCredentialsProvider;
asyncExecutorProvider = builder.asyncExecutorProvider;
compressorName = builder.compressorName;
leaderAwareRoutingEnabled = builder.leaderAwareRoutingEnabled;
attemptDirectPath = builder.attemptDirectPath;
directedReadOptions = builder.directedReadOptions;
useVirtualThreads = builder.useVirtualThreads;
openTelemetry = builder.openTelemetry;
enableApiTracing = builder.enableApiTracing;
enableExtendedTracing = builder.enableExtendedTracing;
}
/**
* The environment to read configuration values from. The default implementation uses environment
* variables.
*/
public interface SpannerEnvironment {
/**
* The optimizer version to use. Must return an empty string to indicate that no value has been
* set.
*/
@Nonnull
default String getOptimizerVersion() {
return "";
}
/**
* The optimizer statistics package to use. Must return an empty string to indicate that no
* value has been set.
*/
@Nonnull
default String getOptimizerStatisticsPackage() {
return "";
}
default boolean isEnableExtendedTracing() {
return false;
}
default boolean isEnableApiTracing() {
return false;
}
}
/**
* Default implementation of {@link SpannerEnvironment}. Reads all configuration from environment
* variables.
*/
private static class SpannerEnvironmentImpl implements SpannerEnvironment {
private static final SpannerEnvironmentImpl INSTANCE = new SpannerEnvironmentImpl();
private static final String SPANNER_OPTIMIZER_VERSION_ENV_VAR = "SPANNER_OPTIMIZER_VERSION";
private static final String SPANNER_OPTIMIZER_STATISTICS_PACKAGE_ENV_VAR =
"SPANNER_OPTIMIZER_STATISTICS_PACKAGE";
private static final String SPANNER_ENABLE_EXTENDED_TRACING = "SPANNER_ENABLE_EXTENDED_TRACING";
private static final String SPANNER_ENABLE_API_TRACING = "SPANNER_ENABLE_API_TRACING";
private SpannerEnvironmentImpl() {}
@Nonnull
@Override
public String getOptimizerVersion() {
return MoreObjects.firstNonNull(System.getenv(SPANNER_OPTIMIZER_VERSION_ENV_VAR), "");
}
@Nonnull
@Override
public String getOptimizerStatisticsPackage() {
return MoreObjects.firstNonNull(
System.getenv(SPANNER_OPTIMIZER_STATISTICS_PACKAGE_ENV_VAR), "");
}
@Override
public boolean isEnableExtendedTracing() {
return Boolean.parseBoolean(System.getenv(SPANNER_ENABLE_EXTENDED_TRACING));
}
@Override
public boolean isEnableApiTracing() {
return Boolean.parseBoolean(System.getenv(SPANNER_ENABLE_API_TRACING));
}
}
/** Builder for {@link SpannerOptions} instances. */
public static class Builder
extends ServiceOptions.Builder {
static final int DEFAULT_PREFETCH_CHUNKS = 4;
static final QueryOptions DEFAULT_QUERY_OPTIONS = QueryOptions.getDefaultInstance();
static final DecodeMode DEFAULT_DECODE_MODE = DecodeMode.DIRECT;
static final RetrySettings DEFAULT_ADMIN_REQUESTS_LIMIT_EXCEEDED_RETRY_SETTINGS =
RetrySettings.newBuilder()
.setInitialRetryDelay(Duration.ofSeconds(5L))
.setRetryDelayMultiplier(2.0)
.setMaxRetryDelay(Duration.ofSeconds(60L))
.setMaxAttempts(10)
.build();
private final ImmutableSet allowedClientLibTokens =
ImmutableSet.of(
ServiceOptions.getGoogApiClientLibName(),
createCustomClientLibToken(JDBC_API_CLIENT_LIB_TOKEN),
createCustomClientLibToken(HIBERNATE_API_CLIENT_LIB_TOKEN),
createCustomClientLibToken(LIQUIBASE_API_CLIENT_LIB_TOKEN),
createCustomClientLibToken(PG_ADAPTER_CLIENT_LIB_TOKEN));
private TransportChannelProvider channelProvider;
@SuppressWarnings("rawtypes")
private ApiFunction channelConfigurator;
private GrpcInterceptorProvider interceptorProvider;
private Integer numChannels;
private String transportChannelExecutorThreadNameFormat = "Cloud-Spanner-TransportChannel-%d";
private int prefetchChunks = DEFAULT_PREFETCH_CHUNKS;
private DecodeMode decodeMode = DEFAULT_DECODE_MODE;
private SessionPoolOptions sessionPoolOptions;
private String databaseRole;
private ImmutableMap sessionLabels;
private SpannerStubSettings.Builder spannerStubSettingsBuilder =
SpannerStubSettings.newBuilder();
private InstanceAdminStubSettings.Builder instanceAdminStubSettingsBuilder =
InstanceAdminStubSettings.newBuilder();
private DatabaseAdminStubSettings.Builder databaseAdminStubSettingsBuilder =
DatabaseAdminStubSettings.newBuilder();
private Duration partitionedDmlTimeout = Duration.ofHours(2L);
private boolean grpcGcpExtensionEnabled = false;
private GcpManagedChannelOptions grpcGcpOptions;
private RetrySettings retryAdministrativeRequestsSettings =
DEFAULT_ADMIN_REQUESTS_LIMIT_EXCEEDED_RETRY_SETTINGS;
private boolean autoThrottleAdministrativeRequests = false;
private boolean trackTransactionStarter = false;
private Map defaultQueryOptions = new HashMap<>();
private CallCredentialsProvider callCredentialsProvider;
private CloseableExecutorProvider asyncExecutorProvider;
private String compressorName;
private String emulatorHost = System.getenv("SPANNER_EMULATOR_HOST");
private boolean leaderAwareRoutingEnabled = true;
private boolean attemptDirectPath = true;
private DirectedReadOptions directedReadOptions;
private boolean useVirtualThreads = false;
private OpenTelemetry openTelemetry;
private boolean enableApiTracing = SpannerOptions.environment.isEnableApiTracing();
private boolean enableExtendedTracing = SpannerOptions.environment.isEnableExtendedTracing();
private static String createCustomClientLibToken(String token) {
return token + " " + ServiceOptions.getGoogApiClientLibName();
}
protected Builder() {
// Manually set retry and polling settings that work.
OperationTimedPollAlgorithm longRunningPollingAlgorithm =
OperationTimedPollAlgorithm.create(
RetrySettings.newBuilder()
.setInitialRpcTimeout(Duration.ofSeconds(60L))
.setMaxRpcTimeout(Duration.ofSeconds(600L))
.setInitialRetryDelay(Duration.ofSeconds(20L))
.setMaxRetryDelay(Duration.ofSeconds(45L))
.setRetryDelayMultiplier(1.5)
.setRpcTimeoutMultiplier(1.5)
.setTotalTimeout(Duration.ofHours(48L))
.build());
databaseAdminStubSettingsBuilder
.createDatabaseOperationSettings()
.setPollingAlgorithm(longRunningPollingAlgorithm);
databaseAdminStubSettingsBuilder
.createBackupOperationSettings()
.setPollingAlgorithm(longRunningPollingAlgorithm);
databaseAdminStubSettingsBuilder
.restoreDatabaseOperationSettings()
.setPollingAlgorithm(longRunningPollingAlgorithm);
}
Builder(SpannerOptions options) {
super(options);
if (options.getHost() != null
&& this.emulatorHost != null
&& !options.getHost().equals(this.emulatorHost)) {
this.emulatorHost = null;
}
this.numChannels = options.numChannels;
this.transportChannelExecutorThreadNameFormat =
options.transportChannelExecutorThreadNameFormat;
this.sessionPoolOptions = options.sessionPoolOptions;
this.prefetchChunks = options.prefetchChunks;
this.decodeMode = options.decodeMode;
this.databaseRole = options.databaseRole;
this.sessionLabels = options.sessionLabels;
this.spannerStubSettingsBuilder = options.spannerStubSettings.toBuilder();
this.instanceAdminStubSettingsBuilder = options.instanceAdminStubSettings.toBuilder();
this.databaseAdminStubSettingsBuilder = options.databaseAdminStubSettings.toBuilder();
this.partitionedDmlTimeout = options.partitionedDmlTimeout;
this.grpcGcpExtensionEnabled = options.grpcGcpExtensionEnabled;
this.grpcGcpOptions = options.grpcGcpOptions;
this.autoThrottleAdministrativeRequests = options.autoThrottleAdministrativeRequests;
this.retryAdministrativeRequestsSettings = options.retryAdministrativeRequestsSettings;
this.trackTransactionStarter = options.trackTransactionStarter;
this.defaultQueryOptions = options.defaultQueryOptions;
this.callCredentialsProvider = options.callCredentialsProvider;
this.asyncExecutorProvider = options.asyncExecutorProvider;
this.compressorName = options.compressorName;
this.channelProvider = options.channelProvider;
this.channelConfigurator = options.channelConfigurator;
this.interceptorProvider = options.interceptorProvider;
this.attemptDirectPath = options.attemptDirectPath;
this.directedReadOptions = options.directedReadOptions;
this.useVirtualThreads = options.useVirtualThreads;
this.enableApiTracing = options.enableApiTracing;
this.enableExtendedTracing = options.enableExtendedTracing;
}
@Override
public Builder setTransportOptions(TransportOptions transportOptions) {
if (!(transportOptions instanceof GrpcTransportOptions)) {
throw new IllegalArgumentException(
"Only grpc transport is allowed for " + API_SHORT_NAME + ".");
}
return super.setTransportOptions(transportOptions);
}
@Override
protected Set getAllowedClientLibTokens() {
return allowedClientLibTokens;
}
@InternalApi
@Override
public SpannerOptions.Builder setClientLibToken(String clientLibToken) {
return super.setClientLibToken(
clientLibToken + " " + ServiceOptions.getGoogApiClientLibName());
}
/**
* Sets the {@code ChannelProvider}. {@link GapicSpannerRpc} would create a default one if none
* is provided.
*
* Setting a custom {@link TransportChannelProvider} also overrides any other settings that
* affect the default channel provider. These must be set manually on the custom {@link
* TransportChannelProvider} instead of on {@link SpannerOptions}. The settings of {@link
* SpannerOptions} that have no effect if you set a custom {@link TransportChannelProvider} are:
*
*
* - {@link #setChannelConfigurator(ApiFunction)}
*
- {@link #setHost(String)}
*
- {@link #setNumChannels(int)}
*
- {@link #setInterceptorProvider(GrpcInterceptorProvider)}
*
- {@link #setHeaderProvider(com.google.api.gax.rpc.HeaderProvider)}
*
*/
public Builder setChannelProvider(TransportChannelProvider channelProvider) {
this.channelProvider = channelProvider;
return this;
}
/**
* Sets an {@link ApiFunction} that will be used to configure the transport channel. This will
* only be used if no custom {@link TransportChannelProvider} has been set.
*/
public Builder setChannelConfigurator(
@SuppressWarnings("rawtypes")
ApiFunction channelConfigurator) {
this.channelConfigurator = channelConfigurator;
return this;
}
/**
* Sets the {@code GrpcInterceptorProvider}. {@link GapicSpannerRpc} would create a default one
* if none is provided.
*/
public Builder setInterceptorProvider(GrpcInterceptorProvider interceptorProvider) {
this.interceptorProvider = interceptorProvider;
return this;
}
/**
* Sets the number of gRPC channels to use. By default 4 channels are created per {@link
* SpannerOptions}.
*/
public Builder setNumChannels(int numChannels) {
this.numChannels = numChannels;
return this;
}
/** Sets the name format for transport channel threads that should be used by this instance. */
Builder setTransportChannelExecutorThreadNameFormat(
String transportChannelExecutorThreadNameFormat) {
this.transportChannelExecutorThreadNameFormat = transportChannelExecutorThreadNameFormat;
return this;
}
/**
* Sets the options for managing the session pool. If not specified then the default {@code
* SessionPoolOptions} is used.
*/
public Builder setSessionPoolOption(SessionPoolOptions sessionPoolOptions) {
this.sessionPoolOptions = sessionPoolOptions;
return this;
}
/**
* Sets the database role that should be used for connections that are created by this instance.
* The database role that is used determines the access permissions that a connection has. This
* can for example be used to create connections that are only permitted to access certain
* tables.
*/
public Builder setDatabaseRole(String databaseRole) {
this.databaseRole = databaseRole;
return this;
}
/**
* Sets the labels to add to all Sessions created in this client.
*
* @param sessionLabels Map from label key to label value. Label key and value cannot be null.
* For more information on valid syntax see
* api docs .
*/
public Builder setSessionLabels(Map sessionLabels) {
Preconditions.checkNotNull(sessionLabels, "Session labels map cannot be null");
for (String value : sessionLabels.values()) {
Preconditions.checkNotNull(value, "Null values are not allowed in the labels map.");
}
this.sessionLabels = ImmutableMap.copyOf(sessionLabels);
return this;
}
/**
* {@link SpannerOptions.Builder} does not support global retry settings, as it creates three
* different gRPC clients: {@link Spanner}, {@link DatabaseAdminClient} and {@link
* InstanceAdminClient}. Instead of calling this method, you should set specific {@link
* RetrySettings} for each of the underlying gRPC clients by calling respectively {@link
* #getSpannerStubSettingsBuilder()}, {@link #getDatabaseAdminStubSettingsBuilder()} or {@link
* #getInstanceAdminStubSettingsBuilder()}.
*/
@Override
public Builder setRetrySettings(RetrySettings retrySettings) {
throw new UnsupportedOperationException(
"SpannerOptions does not support setting global retry settings. "
+ "Call spannerStubSettingsBuilder().Settings().setRetrySettings(RetrySettings) instead.");
}
/**
* Returns the {@link SpannerStubSettings.Builder} that will be used to build the {@link
* SpannerRpc}. Use this to set custom {@link RetrySettings} for individual gRPC methods.
*
* The library will automatically use the defaults defined in {@link SpannerStubSettings} if
* no custom settings are set. The defaults are the same as the defaults that are used by {@link
* SpannerSettings}, and are generated from the file spanner_gapic.yaml.
* Retries are configured for idempotent methods but not for non-idempotent methods.
*
*
You can set the same {@link RetrySettings} for all unary methods by calling this:
*
*
* builder
* .getSpannerStubSettingsBuilder()
* .applyToAllUnaryMethods(
* new ApiFunction<UnaryCallSettings.Builder<?, ?>, Void>() {
* public Void apply(Builder<?, ?> input) {
* input.setRetrySettings(retrySettings);
* return null;
* }
* });
*
*/
public SpannerStubSettings.Builder getSpannerStubSettingsBuilder() {
return spannerStubSettingsBuilder;
}
/**
* Returns the {@link InstanceAdminStubSettings.Builder} that will be used to build the {@link
* SpannerRpc}. Use this to set custom {@link RetrySettings} for individual gRPC methods.
*
* The library will automatically use the defaults defined in {@link
* InstanceAdminStubSettings} if no custom settings are set. The defaults are the same as the
* defaults that are used by {@link InstanceAdminSettings}, and are generated from the file spanner_admin_instance_gapic.yaml.
* Retries are configured for idempotent methods but not for non-idempotent methods.
*
*
You can set the same {@link RetrySettings} for all unary methods by calling this:
*
*
* builder
* .getInstanceAdminStubSettingsBuilder()
* .applyToAllUnaryMethods(
* new ApiFunction<UnaryCallSettings.Builder<?, ?>, Void>() {
* public Void apply(Builder<?, ?> input) {
* input.setRetrySettings(retrySettings);
* return null;
* }
* });
*
*/
public InstanceAdminStubSettings.Builder getInstanceAdminStubSettingsBuilder() {
return instanceAdminStubSettingsBuilder;
}
/**
* Returns the {@link DatabaseAdminStubSettings.Builder} that will be used to build the {@link
* SpannerRpc}. Use this to set custom {@link RetrySettings} for individual gRPC methods.
*
* The library will automatically use the defaults defined in {@link
* DatabaseAdminStubSettings} if no custom settings are set. The defaults are the same as the
* defaults that are used by {@link DatabaseAdminSettings}, and are generated from the file spanner_admin_database_gapic.yaml.
* Retries are configured for idempotent methods but not for non-idempotent methods.
*
*
You can set the same {@link RetrySettings} for all unary methods by calling this:
*
*
* builder
* .getDatabaseAdminStubSettingsBuilder()
* .applyToAllUnaryMethods(
* new ApiFunction<UnaryCallSettings.Builder<?, ?>, Void>() {
* public Void apply(Builder<?, ?> input) {
* input.setRetrySettings(retrySettings);
* return null;
* }
* });
*
*/
public DatabaseAdminStubSettings.Builder getDatabaseAdminStubSettingsBuilder() {
return databaseAdminStubSettingsBuilder;
}
/**
* Sets a timeout specifically for Partitioned DML statements executed through {@link
* DatabaseClient#executePartitionedUpdate(Statement, UpdateOption...)}. The default is 2 hours.
*/
public Builder setPartitionedDmlTimeout(Duration timeout) {
this.partitionedDmlTimeout = timeout;
return this;
}
/**
* Instructs the client library to automatically throttle the number of administrative requests
* if the rate of administrative requests generated by this {@link Spanner} instance will exceed
* the administrative limits Cloud Spanner. The default behavior is to not throttle any
* requests. If the limit is exceeded, Cloud Spanner will return a RESOURCE_EXHAUSTED error.
* More information on the administrative limits can be found here:
* https://cloud.google.com/spanner/quotas#administrative_limits. Setting this option is not a
* guarantee that the rate will never be exceeded, as this option will only throttle requests
* coming from this client. Additional requests from other clients could still cause the limit
* to be exceeded.
*/
public Builder setAutoThrottleAdministrativeRequests() {
this.autoThrottleAdministrativeRequests = true;
return this;
}
/**
* Disables automatic retries of administrative requests that fail if the https://cloud.google.com/spanner/quotas#administrative_limits
* have been exceeded. You should disable these retries if you intend to handle these errors in
* your application.
*/
public Builder disableAdministrativeRequestRetries() {
this.retryAdministrativeRequestsSettings =
this.retryAdministrativeRequestsSettings.toBuilder().setMaxAttempts(1).build();
return this;
}
/**
* Sets the retry settings for retrying administrative requests when the quote of administrative
* requests per minute has been exceeded.
*/
Builder setRetryAdministrativeRequestsSettings(
RetrySettings retryAdministrativeRequestsSettings) {
this.retryAdministrativeRequestsSettings =
Preconditions.checkNotNull(retryAdministrativeRequestsSettings);
return this;
}
/**
* Instructs the client library to track the first request of each read/write transaction. This
* statement will include a BeginTransaction option and will return a transaction id as part of
* its result. All other statements in the same transaction must wait for this first statement
* to finish before they can proceed. By setting this option the client library will throw a
* {@link SpannerException} with {@link ErrorCode#DEADLINE_EXCEEDED} for any subsequent
* statement that has waited for at least 60 seconds for the first statement to return a
* transaction id, including the stacktrace of the initial statement that should have returned a
* transaction id.
*/
public Builder setTrackTransactionStarter() {
this.trackTransactionStarter = true;
return this;
}
/**
* Sets the default {@link QueryOptions} that will be used for all queries on the specified
* database. Query options can also be specified on a per-query basis and as environment
* variables. The precedence of these settings are:
*
*
* - Query options for a specific query
*
- Environment variables
*
- These default query options
*
*
* Each {@link QueryOption} value that is used for a query is determined individually based on
* the above precedence. If for example a value for {@link QueryOptions#getOptimizerVersion()}
* is specified in an environment variable and a value for {@link
* QueryOptions#getOptimizerStatisticsPackage()} is specified for a specific query, both values
* will be used for the specific query. Environment variables are only read during the
* initialization of a {@link SpannerOptions} instance. Changing an environment variable after
* initializing a {@link SpannerOptions} instance will not have any effect on that instance.
*/
public Builder setDefaultQueryOptions(DatabaseId database, QueryOptions defaultQueryOptions) {
this.defaultQueryOptions.put(database, defaultQueryOptions);
return this;
}
/** Gets the {@link QueryOptions} specified in the {@link SpannerEnvironment}. */
QueryOptions getEnvironmentQueryOptions() {
return QueryOptions.newBuilder()
.setOptimizerVersion(environment.getOptimizerVersion())
.setOptimizerStatisticsPackage(environment.getOptimizerStatisticsPackage())
.build();
}
/**
* Sets a {@link CallCredentialsProvider} that can deliver {@link CallCredentials} to use on a
* per-gRPC basis.
*/
public Builder setCallCredentialsProvider(CallCredentialsProvider callCredentialsProvider) {
this.callCredentialsProvider = callCredentialsProvider;
return this;
}
/**
* Sets the compression to use for all gRPC calls. The compressor must be a valid name known in
* the {@link CompressorRegistry}. This will enable compression both from the client to the
* server and from the server to the client.
*
* Supported values are:
*
*
* - gzip: Enable gzip compression
*
- identity: Disable compression
*
null: Use default compression
*
*/
@ExperimentalApi("https://github.com/grpc/grpc-java/issues/1704")
public Builder setCompressorName(@Nullable String compressorName) {
Preconditions.checkArgument(
compressorName == null
|| CompressorRegistry.getDefaultInstance().lookupCompressor(compressorName) != null,
String.format("%s is not a known compressor", compressorName));
this.compressorName = compressorName;
return this;
}
/**
* Sets the {@link ExecutorProvider} to use for high-level async calls that need an executor,
* such as fetching results for an {@link AsyncResultSet}.
*
* Async methods will use a sensible default if no custom {@link ExecutorProvider} has been
* set. The default {@link ExecutorProvider} uses a cached thread pool containing a maximum of 8
* threads. The pool is lazily initialized and will not create any threads if the user
* application does not use any async methods. It will also scale down the thread usage if the
* async load allows for that.
*
*
Call {@link SpannerOptions#createAsyncExecutorProvider(int, long, TimeUnit)} to create a
* provider with a custom pool size or call {@link
* FixedCloseableExecutorProvider#create(ScheduledExecutorService)} to create a {@link
* CloseableExecutorProvider} from a standard Java {@link ScheduledExecutorService}.
*/
public Builder setAsyncExecutorProvider(CloseableExecutorProvider provider) {
this.asyncExecutorProvider = provider;
return this;
}
/**
* Sets the {@link DirectedReadOption} that specify which replicas or regions should be used for
* non-transactional reads or queries.
*
*
DirectedReadOptions set at the request level will take precedence over the options set
* using this method.
*
*
An example below of how {@link DirectedReadOptions} can be constructed by including a
* replica.
*
*
* DirectedReadOptions.newBuilder()
* .setIncludeReplicas(
* IncludeReplicas.newBuilder()
* .addReplicaSelections(
* ReplicaSelection.newBuilder().setLocation("us-east1").build()))
* .build();
* }
*
*/
public Builder setDirectedReadOptions(DirectedReadOptions directedReadOptions) {
this.directedReadOptions =
Preconditions.checkNotNull(directedReadOptions, "DirectedReadOptions cannot be null");
return this;
}
/**
* Specifying this will allow the client to prefetch up to {@code prefetchChunks} {@code
* PartialResultSet} chunks for each read and query. The data size of each chunk depends on the
* server implementation but a good rule of thumb is that each chunk will be up to 1 MiB. Larger
* values reduce the likelihood of blocking while consuming results at the cost of greater
* memory consumption. {@code prefetchChunks} should be greater than 0. To get good performance
* choose a value that is large enough to allow buffering of chunks for an entire row. Apart
* from the buffered chunks, there can be at most one more row buffered in the client. This can
* be overridden on a per read/query basis by {@link Options#prefetchChunks()}. If unspecified,
* we will use a default value (currently 4).
*/
public Builder setPrefetchChunks(int prefetchChunks) {
this.prefetchChunks = prefetchChunks;
return this;
}
/**
* Specifies how values that are returned from a query should be decoded and converted from
* protobuf values into plain Java objects.
*/
public Builder setDecodeMode(DecodeMode decodeMode) {
this.decodeMode = decodeMode;
return this;
}
@Override
public Builder setHost(String host) {
super.setHost(host);
// Setting a host should override any SPANNER_EMULATOR_HOST setting.
setEmulatorHost(null);
return this;
}
/**
* Enables gRPC-GCP extension with the default settings. Do not set
* GOOGLE_CLOUD_SPANNER_MULTIPLEXED_SESSIONS to true in combination with this option, as
* Multiplexed sessions are not supported for gRPC-GCP.
*/
public Builder enableGrpcGcpExtension() {
return this.enableGrpcGcpExtension(null);
}
/**
* Enables gRPC-GCP extension and uses provided options for configuration. The metric registry
* and default Spanner metric labels will be added automatically. Do not set
* GOOGLE_CLOUD_SPANNER_MULTIPLEXED_SESSIONS to true in combination with this option, as
* Multiplexed sessions are not supported for gRPC-GCP.
*/
public Builder enableGrpcGcpExtension(GcpManagedChannelOptions options) {
this.grpcGcpExtensionEnabled = true;
this.grpcGcpOptions = options;
return this;
}
/** Disables gRPC-GCP extension. */
public Builder disableGrpcGcpExtension() {
this.grpcGcpExtensionEnabled = false;
return this;
}
/**
* Sets the host of an emulator to use. By default the value is read from an environment
* variable. If the environment variable is not set, this will be null.
*/
public Builder setEmulatorHost(String emulatorHost) {
this.emulatorHost = emulatorHost;
return this;
}
/**
* Sets OpenTelemetry object to be used for Spanner Metrics and Traces. GlobalOpenTelemetry will
* be used as fallback if this options is not set.
*/
public Builder setOpenTelemetry(OpenTelemetry openTelemetry) {
this.openTelemetry = openTelemetry;
return this;
}
/**
* Enable leader aware routing. Leader aware routing would route all requests in RW/PDML
* transactions to the leader region.
*/
public Builder enableLeaderAwareRouting() {
this.leaderAwareRoutingEnabled = true;
return this;
}
/**
* Disable leader aware routing. Disabling leader aware routing would route all requests in
* RW/PDML transactions to any region.
*/
public Builder disableLeaderAwareRouting() {
this.leaderAwareRoutingEnabled = false;
return this;
}
@BetaApi
public Builder disableDirectPath() {
this.attemptDirectPath = false;
return this;
}
/**
* Enables/disables the use of virtual threads for the gRPC executor. Setting this option only
* has any effect on Java 21 and higher. In all other cases, the option will be ignored.
*/
@BetaApi
protected Builder setUseVirtualThreads(boolean useVirtualThreads) {
this.useVirtualThreads = useVirtualThreads;
return this;
}
/**
* Creates and sets an {@link com.google.api.gax.tracing.ApiTracer} for the RPCs that are
* executed by this client. Enabling this creates traces for each individual RPC execution,
* including events/annotations when an RPC is retried or fails. The traces are only exported if
* an OpenTelemetry or OpenCensus trace exporter has been configured for the client.
*/
public Builder setEnableApiTracing(boolean enableApiTracing) {
this.enableApiTracing = enableApiTracing;
return this;
}
/**
* Sets whether to enable extended OpenTelemetry tracing. Enabling this option will add the
* following additional attributes to the traces that are generated by the client:
*
*
* - db.statement: Contains the SQL statement that is being executed.
*
- thread.name: The name of the thread that executes the statement.
*
*/
public Builder setEnableExtendedTracing(boolean enableExtendedTracing) {
this.enableExtendedTracing = enableExtendedTracing;
return this;
}
@SuppressWarnings("rawtypes")
@Override
public SpannerOptions build() {
// Set the host of emulator has been set.
if (emulatorHost != null) {
if (!emulatorHost.startsWith("http")) {
emulatorHost = "http://" + emulatorHost;
}
this.setHost(emulatorHost);
// Channels are secure by default (via SSL/TLS). For the example we disable TLS to avoid
// needing certificates.
this.setChannelConfigurator(ManagedChannelBuilder::usePlaintext);
// As we are using plain text, we should never send any credentials.
this.setCredentials(NoCredentials.getInstance());
}
if (this.numChannels == null) {
this.numChannels =
this.grpcGcpExtensionEnabled ? GRPC_GCP_ENABLED_DEFAULT_CHANNELS : DEFAULT_CHANNELS;
}
synchronized (lock) {
if (activeTracingFramework == null) {
activeTracingFramework = TracingFramework.OPEN_CENSUS;
}
}
return new SpannerOptions(this);
}
}
/** Returns default instance of {@code SpannerOptions}. */
public static SpannerOptions getDefaultInstance() {
return newBuilder().build();
}
public static Builder newBuilder() {
return new Builder();
}
/**
* Sets the environment to use to read configuration. The default will read configuration from
* environment variables.
*/
public static void useEnvironment(SpannerEnvironment environment) {
SpannerOptions.environment = environment;
}
/**
* Sets the environment to use to read configuration to the default environment. This will read
* configuration from environment variables.
*/
public static void useDefaultEnvironment() {
SpannerOptions.environment = SpannerEnvironmentImpl.INSTANCE;
}
/**
* Enables OpenTelemetry traces. Enabling OpenTelemetry traces will disable OpenCensus traces. By
* default, OpenCensus traces are enabled.
*/
public static void enableOpenTelemetryTraces() {
synchronized (lock) {
if (activeTracingFramework != null
&& activeTracingFramework != TracingFramework.OPEN_TELEMETRY) {
throw new IllegalStateException(
"ActiveTracingFramework is set to OpenCensus and cannot be reset after SpannerOptions object is created.");
}
activeTracingFramework = TracingFramework.OPEN_TELEMETRY;
}
}
/** Enables OpenCensus traces. Enabling OpenCensus traces will disable OpenTelemetry traces. */
@ObsoleteApi(
"The OpenCensus project is deprecated. Use enableOpenTelemetryTraces to switch to OpenTelemetry traces")
public static void enableOpenCensusTraces() {
synchronized (lock) {
if (activeTracingFramework != null
&& activeTracingFramework != TracingFramework.OPEN_CENSUS) {
throw new IllegalStateException(
"ActiveTracingFramework is set to OpenTelemetry and cannot be reset after SpannerOptions object is created.");
}
activeTracingFramework = TracingFramework.OPEN_CENSUS;
}
}
/**
* Always resets the activeTracingFramework. This variable is used for internal testing, and is
* not a valid production scenario
*/
@ObsoleteApi(
"The OpenCensus project is deprecated. Use enableOpenTelemetryTraces to switch to OpenTelemetry traces")
static void resetActiveTracingFramework() {
activeTracingFramework = null;
}
public static TracingFramework getActiveTracingFramework() {
synchronized (lock) {
if (activeTracingFramework == null) {
return TracingFramework.OPEN_CENSUS;
}
return activeTracingFramework;
}
}
/** Disables OpenCensus metrics. Disable OpenCensus metrics before creating Spanner client. */
public static void disableOpenCensusMetrics() {
SpannerOptions.enableOpenCensusMetrics = false;
}
@VisibleForTesting
static void enableOpenCensusMetrics() {
SpannerOptions.enableOpenCensusMetrics = true;
}
public static boolean isEnabledOpenCensusMetrics() {
return SpannerOptions.enableOpenCensusMetrics;
}
/** Enables OpenTelemetry metrics. Enable OpenTelemetry metrics before creating Spanner client. */
public static void enableOpenTelemetryMetrics() {
SpannerOptions.enableOpenTelemetryMetrics = true;
}
public static boolean isEnabledOpenTelemetryMetrics() {
return SpannerOptions.enableOpenTelemetryMetrics;
}
@Override
protected String getDefaultProject() {
String projectId = getDefaultProjectId();
// The project id does not matter if we are using the emulator.
if (projectId == null && System.getenv("SPANNER_EMULATOR_HOST") != null) {
return "emulator-project";
}
return projectId;
}
public TransportChannelProvider getChannelProvider() {
return channelProvider;
}
@SuppressWarnings("rawtypes")
public ApiFunction getChannelConfigurator() {
return channelConfigurator;
}
public GrpcInterceptorProvider getInterceptorProvider() {
return interceptorProvider;
}
public int getNumChannels() {
return numChannels;
}
public String getTransportChannelExecutorThreadNameFormat() {
return transportChannelExecutorThreadNameFormat;
}
public SessionPoolOptions getSessionPoolOptions() {
return sessionPoolOptions;
}
public String getDatabaseRole() {
return databaseRole;
}
public Map getSessionLabels() {
return sessionLabels;
}
public SpannerStubSettings getSpannerStubSettings() {
return spannerStubSettings;
}
public InstanceAdminStubSettings getInstanceAdminStubSettings() {
return instanceAdminStubSettings;
}
public DatabaseAdminStubSettings getDatabaseAdminStubSettings() {
return databaseAdminStubSettings;
}
public Duration getPartitionedDmlTimeout() {
return partitionedDmlTimeout;
}
public boolean isGrpcGcpExtensionEnabled() {
return grpcGcpExtensionEnabled;
}
public GcpManagedChannelOptions getGrpcGcpOptions() {
return grpcGcpOptions;
}
public boolean isAutoThrottleAdministrativeRequests() {
return autoThrottleAdministrativeRequests;
}
public RetrySettings getRetryAdministrativeRequestsSettings() {
return retryAdministrativeRequestsSettings;
}
public boolean isTrackTransactionStarter() {
return trackTransactionStarter;
}
public CallCredentialsProvider getCallCredentialsProvider() {
return callCredentialsProvider;
}
public String getCompressorName() {
return compressorName;
}
public boolean isLeaderAwareRoutingEnabled() {
return leaderAwareRoutingEnabled;
}
public DirectedReadOptions getDirectedReadOptions() {
return directedReadOptions;
}
@BetaApi
public boolean isAttemptDirectPath() {
return attemptDirectPath;
}
/**
* Returns an instance of OpenTelemetry. If OpenTelemetry object is not set via SpannerOptions
* then GlobalOpenTelemetry will be used as fallback.
*/
public OpenTelemetry getOpenTelemetry() {
if (this.openTelemetry != null) {
return this.openTelemetry;
} else {
return GlobalOpenTelemetry.get();
}
}
@Override
public ApiTracerFactory getApiTracerFactory() {
List apiTracerFactories = new ArrayList();
// Prefer any direct ApiTracerFactory that might have been set on the builder.
apiTracerFactories.add(
MoreObjects.firstNonNull(super.getApiTracerFactory(), getDefaultApiTracerFactory()));
return new CompositeTracerFactory(apiTracerFactories);
}
private ApiTracerFactory getDefaultApiTracerFactory() {
if (isEnableApiTracing()) {
if (activeTracingFramework == TracingFramework.OPEN_TELEMETRY) {
return new OpenTelemetryApiTracerFactory(
getOpenTelemetry()
.getTracer(
MetricRegistryConstants.INSTRUMENTATION_SCOPE,
GaxProperties.getLibraryVersion(getClass())),
Attributes.empty());
} else if (activeTracingFramework == TracingFramework.OPEN_CENSUS) {
return new OpencensusTracerFactory();
}
}
return BaseApiTracerFactory.getInstance();
}
/**
* Returns true if an {@link com.google.api.gax.tracing.ApiTracer} should be created and set on
* the Spanner client. Enabling this only has effect if an OpenTelemetry or OpenCensus trace
* exporter has been configured.
*/
public boolean isEnableApiTracing() {
return enableApiTracing;
}
@BetaApi
public boolean isUseVirtualThreads() {
return useVirtualThreads;
}
/**
* Returns whether extended OpenTelemetry tracing is enabled. Enabling this option will add the
* following additional attributes to the traces that are generated by the client:
*
*
* - db.statement: Contains the SQL statement that is being executed.
*
- thread.name: The name of the thread that executes the statement.
*
*/
public boolean isEnableExtendedTracing() {
return enableExtendedTracing;
}
/** Returns the default query options to use for the specific database. */
public QueryOptions getDefaultQueryOptions(DatabaseId databaseId) {
// Use the specific query options for the database if any have been specified. These have
// already been merged with the query options specified in the environment variables.
QueryOptions options = this.mergedQueryOptions.get(databaseId);
if (options == null) {
// Use the generic environment query options. These are initialized as a default instance of
// query options and appended with any options specified in the environment variables.
options = this.envQueryOptions;
}
return options;
}
public CloseableExecutorProvider getAsyncExecutorProvider() {
return asyncExecutorProvider;
}
public int getPrefetchChunks() {
return prefetchChunks;
}
public DecodeMode getDecodeMode() {
return decodeMode;
}
public static GrpcTransportOptions getDefaultGrpcTransportOptions() {
return GrpcTransportOptions.newBuilder().build();
}
@Override
protected String getDefaultHost() {
return DEFAULT_HOST;
}
private static class SpannerDefaults implements ServiceDefaults {
@Override
public SpannerFactory getDefaultServiceFactory() {
return DefaultSpannerFactory.INSTANCE;
}
@Override
public SpannerRpcFactory getDefaultRpcFactory() {
return DefaultSpannerRpcFactory.INSTANCE;
}
@Override
public TransportOptions getDefaultTransportOptions() {
return getDefaultGrpcTransportOptions();
}
}
@Override
public Set getScopes() {
return SCOPES;
}
protected SpannerRpc getSpannerRpcV1() {
return (SpannerRpc) getRpc();
}
/**
* @return true if the cached Spanner service instance is null or
* closed. This will cause the method {@link #getService()} to create a new {@link SpannerRpc}
* instance when one is requested.
*/
@Override
protected boolean shouldRefreshService(Spanner cachedService) {
return cachedService == null || cachedService.isClosed();
}
/**
* @return true if the cached {@link ServiceRpc} instance is null or
* closed. This will cause the method {@link #getRpc()} to create a new {@link Spanner}
* instance when one is requested.
*/
@Override
protected boolean shouldRefreshRpc(ServiceRpc cachedRpc) {
return cachedRpc == null || ((SpannerRpc) cachedRpc).isClosed();
}
@SuppressWarnings("unchecked")
@Override
public Builder toBuilder() {
return new Builder(this);
}
public String getEndpoint() {
URL url;
try {
url = new URL(getHost());
} catch (MalformedURLException e) {
throw new IllegalArgumentException("Invalid host: " + getHost(), e);
}
return String.format(
"%s:%s", url.getHost(), url.getPort() < 0 ? url.getDefaultPort() : url.getPort());
}
}