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/*
* Copyright 2010-2024 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License").
* You may not use this file except in compliance with the License.
* A copy of the License is located at
*
* http://aws.amazon.com/apache2.0
*
* or in the "license" file accompanying this file. This file 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.amazonaws;
import static com.amazonaws.SDKGlobalConfiguration.PROFILING_SYSTEM_PROPERTY;
import com.amazonaws.annotation.SdkInternalApi;
import com.amazonaws.annotation.SdkProtectedApi;
import com.amazonaws.auth.AWSCredentialsProvider;
import com.amazonaws.auth.EndpointPrefixAwareSigner;
import com.amazonaws.auth.RegionAwareSigner;
import com.amazonaws.auth.RegionFromEndpointResolverAwareSigner;
import com.amazonaws.auth.Signer;
import com.amazonaws.auth.SignerFactory;
import com.amazonaws.client.AwsSyncClientParams;
import com.amazonaws.client.builder.AwsClientBuilder;
import com.amazonaws.handlers.RequestHandler;
import com.amazonaws.handlers.RequestHandler2;
import com.amazonaws.http.AmazonHttpClient;
import com.amazonaws.http.ExecutionContext;
import com.amazonaws.internal.DefaultServiceEndpointBuilder;
import com.amazonaws.internal.auth.DefaultSignerProvider;
import com.amazonaws.internal.auth.SignerProvider;
import com.amazonaws.internal.auth.SignerProviderContext;
import com.amazonaws.log.CommonsLogFactory;
import com.amazonaws.metrics.AwsSdkMetrics;
import com.amazonaws.metrics.RequestMetricCollector;
import com.amazonaws.monitoring.CsmConfiguration;
import com.amazonaws.monitoring.CsmConfigurationProvider;
import com.amazonaws.monitoring.DefaultCsmConfigurationProviderChain;
import com.amazonaws.monitoring.MonitoringListener;
import com.amazonaws.monitoring.internal.AgentMonitoringListener;
import com.amazonaws.monitoring.internal.ClientSideMonitoringRequestHandler;
import com.amazonaws.regions.EndpointToRegion;
import com.amazonaws.regions.MetadataSupportedRegionFromEndpointProvider;
import com.amazonaws.regions.Region;
import com.amazonaws.regions.Regions;
import com.amazonaws.util.AWSRequestMetrics;
import com.amazonaws.util.AWSRequestMetrics.Field;
import com.amazonaws.util.Classes;
import com.amazonaws.util.RuntimeHttpUtils;
import com.amazonaws.util.StringUtils;
import java.net.URI;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import java.util.concurrent.CopyOnWriteArrayList;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/**
* Abstract base class for Amazon Web Service Java clients.
*
* Responsible for basic client capabilities that are the same across all AWS
* SDK Java clients (ex: setting the client endpoint).
*/
public abstract class AmazonWebServiceClient {
/**
* @deprecated No longer used.
*/
@Deprecated
public static final boolean LOGGING_AWS_REQUEST_METRIC = true;
private static final String AMAZON = "Amazon";
private static final String AWS = "AWS";
private static final String DEFAULT_CLIENT_ID = "";
private static final Log log =
LogFactory.getLog(AmazonWebServiceClient.class);
static {
// Configures the internal logging of the signers and core
// classes to use Jakarta Commons Logging to stay consistent with the
// rest of the library.
boolean success = com.amazonaws.log.InternalLogFactory.configureFactory(
new CommonsLogFactory());
if (log.isDebugEnabled())
log.debug("Internal logging successfully configured to commons logger: "
+ success);
}
/**
* Flag indicating whether a client is mutable or not. Legacy clients built via the constructors
* are mutable. Clients built with the fluent builders are immutable.
*/
private volatile boolean isImmutable = false;
/**
* The service endpoint to which this client will send requests.
*
* Subclass should only read but not assign to this field, at least not
* without synchronization on the enclosing object for thread-safety
* reason. If this value is changed to effectively override the endpoint, then the 'isEndpointOverridden' property
* should also be set to 'true' within the same synchronized block of code.
*/
protected volatile URI endpoint;
/**
* A boolean flag that indicates whether the endpoint has been overridden either on construction or later mutated
* due to a call to setEndpoint(). If the endpoint property is updated directly then the method doing that update
* also has the responsibility to update this flag as part of an atomic threadsafe operation.
*/
protected volatile boolean isEndpointOverridden = false;
/**
* Used to explicitly override the internal signer region computed by the
* default implementation. This field is typically null.
*/
private volatile String signerRegionOverride;
/** The client configuration */
protected ClientConfiguration clientConfiguration;
/** Low level client for sending requests to AWS services. */
protected AmazonHttpClient client;
/** Optional request handlers for additional request processing. */
protected final List requestHandler2s;
/** Optional offset (in seconds) to use when signing requests */
protected int timeOffset;
private volatile SignerProvider signerProvider;
private final CsmConfiguration csmConfiguration;
/**
* The cached service abbreviation for this service, used for identifying
* service endpoints by region, identifying the necessary signer, etc.
* Thread safe so it's backward compatible.
*/
private volatile String serviceName;
/**
* The service name in region metadata, i.e. the prefix of endpoint.
*/
private volatile String endpointPrefix;
/**
* Region used to sign requests.
*/
private volatile String signingRegion;
private Collection monitoringListeners;
private AgentMonitoringListener agentMonitoringListener;
/**
* Constructs a new AmazonWebServiceClient object using the specified
* configuration.
*
* @param clientConfiguration
* The client configuration for this client.
*/
public AmazonWebServiceClient(ClientConfiguration clientConfiguration) {
this(clientConfiguration, null);
}
/**
* Constructs a new AmazonWebServiceClient object using the specified
* configuration and request metric collector.
*
* @param clientConfiguration
* The client configuration for this client.
* @param requestMetricCollector
* optional request metric collector to be used at the http
* client level; can be null.
*/
public AmazonWebServiceClient(ClientConfiguration clientConfiguration,
RequestMetricCollector requestMetricCollector) {
this(clientConfiguration, requestMetricCollector, false);
}
@SdkProtectedApi
protected AmazonWebServiceClient(final ClientConfiguration clientConfiguration,
final RequestMetricCollector requestMetricCollector,
boolean disableStrictHostNameVerification) {
this(new AwsSyncClientParams() {
@Override
public AWSCredentialsProvider getCredentialsProvider() {
return null;
}
@Override
public ClientConfiguration getClientConfiguration() {
return clientConfiguration;
}
@Override
public RequestMetricCollector getRequestMetricCollector() {
return requestMetricCollector;
}
@Override
public List getRequestHandlers() {
return new CopyOnWriteArrayList();
}
@Override
public CsmConfigurationProvider getClientSideMonitoringConfigurationProvider() {
return DefaultCsmConfigurationProviderChain.getInstance();
}
@Override
public MonitoringListener getMonitoringListener() {
return null;
}
}, !disableStrictHostNameVerification);
}
protected AmazonWebServiceClient(AwsSyncClientParams clientParams) {
this(clientParams, null);
}
private AmazonWebServiceClient(AwsSyncClientParams clientParams, Boolean useStrictHostNameVerification) {
this.clientConfiguration = clientParams.getClientConfiguration();
this.requestHandler2s = clientParams.getRequestHandlers();
this.monitoringListeners = new CopyOnWriteArrayList();
useStrictHostNameVerification = useStrictHostNameVerification != null ? useStrictHostNameVerification
: useStrictHostNameVerification();
this.client = new AmazonHttpClient(clientConfiguration,
clientParams.getRequestMetricCollector(),
!useStrictHostNameVerification,
calculateCRC32FromCompressedData());
this.csmConfiguration = getCsmConfiguration(clientParams.getClientSideMonitoringConfigurationProvider());
if (isCsmEnabled()) {
agentMonitoringListener = new AgentMonitoringListener(csmConfiguration.getHost(), csmConfiguration.getPort());
monitoringListeners.add(agentMonitoringListener);
}
if (clientParams.getMonitoringListener() != null) {
monitoringListeners.add(clientParams.getMonitoringListener());
}
if (shouldGenerateClientSideMonitoringEvents()) {
requestHandler2s.add(new ClientSideMonitoringRequestHandler(getClientId(), monitoringListeners));
}
}
/**
* Returns the signer.
*
* Note, however, the signer configured for S3 is incomplete at this stage
* as the information on the S3 bucket and key is not yet known.
*/
@Deprecated
protected Signer getSigner() {
return signerProvider.getSigner(SignerProviderContext.builder().build());
}
/**
* Returns a flag that indicates whether the endpoint for this client has been overridden or not.
* @return true if the configured endpoint is an override; false if not.
*/
@SdkProtectedApi
protected boolean isEndpointOverridden() {
return this.isEndpointOverridden;
}
/**
* @return Current SignerProvider instance.
*/
@SdkProtectedApi
protected SignerProvider getSignerProvider() {
return signerProvider;
}
/**
* Overrides the default endpoint for this client. Callers can use this
* method to control which AWS region they want to work with.
*
* This method is not threadsafe. Endpoints should be configured when the
* client is created and before any service requests are made. Changing it
* afterwards creates inevitable race conditions for any service requests in
* transit.
*
* Callers can pass in just the endpoint (ex: "ec2.amazonaws.com") or a full
* URL, including the protocol (ex: "https://ec2.amazonaws.com"). If the
* protocol is not specified here, the default protocol from this client's
* {@link ClientConfiguration} will be used, which by default is HTTPS.
*
* For more information on using AWS regions with the AWS SDK for Java, and
* a complete list of all available endpoints for all AWS services, see:
*
* https://docs.aws.amazon.com/sdk-for-java/v1/developer-guide/java-dg-region-selection.html#region-selection-choose-endpoint
*
* @param endpoint
* The endpoint (ex: "ec2.amazonaws.com") or a full URL,
* including the protocol (ex: "https://ec2.amazonaws.com") of
* the region specific AWS endpoint this client will communicate
* with.
* @throws IllegalArgumentException
* If any problems are detected with the specified endpoint.
*
* @deprecated use {@link AwsClientBuilder#setEndpointConfiguration(AwsClientBuilder.EndpointConfiguration)} for example:
* {@code builder.setEndpointConfiguration(new EndpointConfiguration(endpoint, signingRegion));}
*/
@Deprecated
public void setEndpoint(String endpoint) throws IllegalArgumentException {
checkMutability();
URI uri = toURI(endpoint);
Signer signer = computeSignerByURI(uri, signerRegionOverride, false);
synchronized (this) {
this.isEndpointOverridden = true;
this.endpoint = uri;
this.signerProvider = createSignerProvider(signer);
this.signingRegion = EndpointToRegion.guessRegionNameForEndpoint(endpoint, getEndpointPrefix());
}
}
/** Returns the endpoint as a URI. */
private URI toURI(String endpoint) throws IllegalArgumentException {
return RuntimeHttpUtils.toUri(endpoint, clientConfiguration);
}
/**
* Allows specifying the endpoint along with signing information (service name and signing region). This method will
* overwrite any information set previously by any set/with/configure Region/Endpoint methods.
*
* Overrides the default endpoint for this client
* ("http://dynamodb.us-east-1.amazonaws.com/") and explicitly provides an
* AWS region ID and AWS service name to use when the client calculates a
* signature for requests. In almost all cases, this region ID and service
* name are automatically determined from the endpoint, and callers should
* use the simpler one-argument form of setEndpoint instead of this method.
*
* Callers can pass in just the endpoint (ex:
* "dynamodb.us-east-1.amazonaws.com/") or a full URL, including the
* protocol (ex: "http://dynamodb.us-east-1.amazonaws.com/"). If the
* protocol is not specified here, the default protocol from this client's
* {@link ClientConfiguration} will be used, which by default is HTTPS.
*
* For more information on using AWS regions with the AWS SDK for Java, and
* a complete list of all available endpoints for all AWS services, see: http://developer.amazonwebservices.com/connect/entry.jspa?externalID=
* 3912
*
* @param endpoint
* The endpoint (ex: "dynamodb.us-east-1.amazonaws.com/") or a
* full URL, including the protocol (ex:
* "http://dynamodb.us-east-1.amazonaws.com/") of the region
* specific AWS endpoint this client will communicate with.
* @param serviceName
* This parameter is ignored.
* @param regionId
* The ID of the region in which this service resides AND the
* overriding region for signing purposes.
*
* @throws IllegalArgumentException
* If any problems are detected with the specified endpoint.
* @deprecated Please use the client builders instead. The
* {@link AwsClientBuilder#withEndpointConfiguration(AwsClientBuilder.EndpointConfiguration)} method on the builder allows
* setting both endpoint and signing region. See
* Creating Service Clients
* for more information.
*/
@Deprecated
public void setEndpoint(String endpoint, String serviceName, String regionId) {
URI uri = toURI(endpoint);
Signer signer = computeSignerByServiceRegion(serviceName, regionId,
regionId, true);
synchronized (this) {
setServiceNameIntern(serviceName);
this.signerProvider = createSignerProvider(signer);
this.isEndpointOverridden = true;
this.endpoint = uri;
this.signerRegionOverride = regionId;
this.signingRegion = regionId;
}
}
/**
* Returns the signer based on the given URI and the current AWS client
* configuration. Currently only the SQS client can have different region on
* a per request basis. For other AWS clients, the region remains the same
* on a per AWS client level.
*
* Note, however, the signer returned for S3 is incomplete at this stage as
* the information on the S3 bucket and key is not yet known.
*/
public Signer getSignerByURI(URI uri) {
return computeSignerByURI(uri, signerRegionOverride, true);
}
/**
* Returns the signer for the given uri and the current client
* configuration.
*
* Note, however, the signer returned for S3 is incomplete at this stage as
* the information on the S3 bucket and key is not yet known.
*
* @param signerRegionOverride
* the overriding signer region; or null if there is none.
* @param isRegionIdAsSignerParam
* true if the "regionId" is used to configure the signer if
* applicable; false if this method is called for the purpose of
* purely setting the communication end point of this AWS client,
* and therefore the "regionId" parameter will not be used
* directly for configuring the signer.
*/
private Signer computeSignerByURI(URI uri, String signerRegionOverride,
boolean isRegionIdAsSignerParam) {
if (uri == null) {
throw new IllegalArgumentException(
"Endpoint is not set. Use setEndpoint to set an endpoint before performing any request.");
}
if (uri.getHost() == null) {
throw new IllegalArgumentException("Endpoint does not contain a valid host name: " + uri);
}
String service = getServiceNameIntern();
String region = EndpointToRegion.guessRegionNameForEndpointWithDefault(uri.getHost(), getEndpointPrefix(), "us-east-1");
return computeSignerByServiceRegion(
service, region, signerRegionOverride, isRegionIdAsSignerParam);
}
/**
* Returns the signer for the given service name, region id, and the current
* client configuration.
*
* Note, however, the signer returned for S3 is incomplete at this stage as
* the information on the S3 bucket and key is not yet known.
*
* @param regionId
* the region for sending AWS requests
* @param signerRegionOverride
* the overriding signer region; or null if there is none.
* @param isRegionIdAsSignerParam
* true if the "regionId" is used to configure the signer if
* applicable; false if this method is called for the purpose of
* purely setting the communication end point of this AWS client,
* and therefore the "regionId" parameter will not be used
* directly for configuring the signer.
*/
private Signer computeSignerByServiceRegion(
String serviceName, String regionId,
String signerRegionOverride,
boolean isRegionIdAsSignerParam) {
String signerType = clientConfiguration.getSignerOverride();
Signer signer = signerType == null
? SignerFactory.getSigner(serviceName, regionId)
: SignerFactory.getSignerByTypeAndService(signerType, serviceName)
;
if (signer instanceof RegionAwareSigner) {
// Overrides the default region computed
RegionAwareSigner regionAwareSigner = (RegionAwareSigner)signer;
// (signerRegionOverride != null) means that it is likely to be AWS
// internal dev work, as "signerRegionOverride" is typically null
// when used in the external release
if (signerRegionOverride != null)
regionAwareSigner.setRegionName(signerRegionOverride);
else if (regionId != null && isRegionIdAsSignerParam)
regionAwareSigner.setRegionName(regionId);
}
if (signer instanceof EndpointPrefixAwareSigner) {
EndpointPrefixAwareSigner endpointPrefixAwareSigner = (EndpointPrefixAwareSigner) signer;
/*
* This will be used to compute the region name required for signing
* if signerRegionOverride is not provided
*/
endpointPrefixAwareSigner.setEndpointPrefix(endpointPrefix);
}
if (signer instanceof RegionFromEndpointResolverAwareSigner) {
// Allow the signer to assess the endpoints.json file for regions
RegionFromEndpointResolverAwareSigner awareSigner = (RegionFromEndpointResolverAwareSigner) signer;
awareSigner.setRegionFromEndpointResolver(new MetadataSupportedRegionFromEndpointProvider());
}
return signer;
}
/**
* An alternative to {@link AmazonWebServiceClient#setEndpoint(String)}, sets the regional
* endpoint for this client's service calls. Callers can use this method to control which AWS
* region they want to work with.
*
* This method is not threadsafe. A region should be configured when the client is created
* and before any service requests are made. Changing it afterwards creates inevitable race
* conditions for any service requests in transit or retrying.
*
* By default, all service endpoints in all regions use the https protocol. To use http instead,
* specify it in the {@link ClientConfiguration} supplied at construction.
*
* @param region
* The region this client will communicate with. See
* {@link Region#getRegion(com.amazonaws.regions.Regions)} for accessing a given
* region.
* @throws java.lang.IllegalArgumentException
* If the given region is null, or if this service isn't available in the given
* region. See {@link Region#isServiceSupported(String)}
* @see Region#getRegion(com.amazonaws.regions.Regions)
* @see Region#createClient(Class, com.amazonaws.auth.AWSCredentialsProvider,
* ClientConfiguration)
* @deprecated use {@link AwsClientBuilder#setRegion(String)}
*/
@Deprecated
public void setRegion(Region region) throws IllegalArgumentException {
checkMutability();
if (region == null) {
throw new IllegalArgumentException("No region provided");
}
final String serviceNameForEndpoint = getEndpointPrefix();
final String serviceNameForSigner = getServiceNameIntern();
URI uri = new DefaultServiceEndpointBuilder(serviceNameForEndpoint, clientConfiguration.getProtocol()
.toString()).withRegion(region).getServiceEndpoint();
Signer signer = computeSignerByServiceRegion(serviceNameForSigner, region.getName(), signerRegionOverride, false);
synchronized (this) {
this.isEndpointOverridden = false;
this.endpoint = uri;
this.signerProvider = createSignerProvider(signer);
this.signingRegion = EndpointToRegion.guessRegionNameForEndpoint(endpoint.toString(), getEndpointPrefix());
}
}
/**
* Convenient method for setting region.
*
* @param region region to set to; must not be null.
*
* @see #setRegion(Region)
* @deprecated use {@link AwsClientBuilder#setRegion(String)}
*/
@Deprecated
public final void configureRegion(Regions region) {
checkMutability();
if (region == null)
throw new IllegalArgumentException("No region provided");
this.setRegion(Region.getRegion(region));
}
/**
* Shuts down this client object, releasing any resources that might be held
* open. If this method is not invoked, resources may be leaked. Once a client
* has been shutdown, it should not be used to make any more requests.
*/
public void shutdown() {
if (agentMonitoringListener != null) {
agentMonitoringListener.shutdown();
}
client.shutdown();
}
/**
* @deprecated by {@link #addRequestHandler(RequestHandler2)}.
*
* Appends a request handler to the list of registered handlers that are run
* as part of a request's lifecycle.
*
* @param requestHandler
* The new handler to add to the current list of request
* handlers.
*/
@Deprecated
public void addRequestHandler(RequestHandler requestHandler) {
checkMutability();
requestHandler2s.add(RequestHandler2.adapt(requestHandler));
}
/**
* Appends a request handler to the list of registered handlers that are run
* as part of a request's lifecycle.
*
* @param requestHandler2
* The new handler to add to the current list of request
* handlers.
* @deprecated use {@link AwsClientBuilder#withRequestHandlers(RequestHandler2...)}
*/
@Deprecated
public void addRequestHandler(RequestHandler2 requestHandler2) {
checkMutability();
requestHandler2s.add(requestHandler2);
}
/**
* Removes a request handler from the list of registered handlers that are run
* as part of a request's lifecycle.
*
* @param requestHandler
* The handler to remove from the current list of request
* handlers.
* @deprecated use {@link AwsClientBuilder#withRequestHandlers(RequestHandler2...)}
*/
@Deprecated
public void removeRequestHandler(RequestHandler requestHandler) {
checkMutability();
requestHandler2s.remove(RequestHandler2.adapt(requestHandler));
}
/**
* @deprecated use {@link AwsClientBuilder#withRequestHandlers(RequestHandler2...)}
*/
@Deprecated
public void removeRequestHandler(RequestHandler2 requestHandler2) {
checkMutability();
requestHandler2s.remove(requestHandler2);
}
/**
* Runs the {@code beforeMarshalling} method of any
* {@code RequestHandler2}s associated with this client.
*
* @param request the request passed in from the user
* @return the (possibly different) request to marshal
*/
@SuppressWarnings("unchecked")
protected final T beforeMarshalling(
T request) {
T local = request;
for (RequestHandler2 handler : requestHandler2s) {
local = (T) handler.beforeMarshalling(local);
}
return local;
}
protected ExecutionContext createExecutionContext(AmazonWebServiceRequest req) {
return createExecutionContext(req, signerProvider);
}
protected ExecutionContext createExecutionContext(AmazonWebServiceRequest req,
SignerProvider signerProvider) {
boolean isMetricsEnabled = isRequestMetricsEnabled(req) || isProfilingEnabled() ||
shouldGenerateClientSideMonitoringEvents();
return ExecutionContext.builder()
.withRequestHandler2s(requestHandler2s)
.withUseRequestMetrics(isMetricsEnabled)
.withAwsClient(this)
.withSignerProvider(signerProvider).build();
}
protected final ExecutionContext createExecutionContext(Request req) {
return createExecutionContext(req.getOriginalRequest());
}
protected SignerProvider createSignerProvider(Signer signer) {
return new DefaultSignerProvider(this, signer);
}
/* Check the profiling system property and return true if set */
protected static boolean isProfilingEnabled() {
return System.getProperty(PROFILING_SYSTEM_PROPERTY) != null;
}
/*
* Whether to generate client side monitoring events. Only generating
* client side monitoring events when there are monitoring listeners attached.
*
* @see ClientSideMonitoringRequestMetricCollector
*/
protected boolean shouldGenerateClientSideMonitoringEvents() {
return !monitoringListeners.isEmpty();
}
/**
* Returns true if request metric collection is applicable to the given
* request; false otherwise.
*/
protected final boolean isRequestMetricsEnabled(AmazonWebServiceRequest req) {
RequestMetricCollector c = req.getRequestMetricCollector(); // request level collector
if (c != null && c.isEnabled()) {
return true;
}
return isRMCEnabledAtClientOrSdkLevel();
}
/**
* Returns true if request metric collection is enabled at the service
* client or AWS SDK level request; false otherwise.
*/
private boolean isRMCEnabledAtClientOrSdkLevel() {
RequestMetricCollector c = requestMetricCollector();
return c != null && c.isEnabled();
}
/**
* Sets the optional value for time offset for this client. This
* value will be applied to all requests processed through this client.
* Value is in seconds, positive values imply the current clock is "fast",
* negative values imply clock is slow.
*
* @param timeOffset
* The optional value for time offset (in seconds) for this client.
*/
public void setTimeOffset(int timeOffset) {
checkMutability();
this.timeOffset = timeOffset;
}
/**
* Sets the optional value for time offset for this client. This
* value will be applied to all requests processed through this client.
* Value is in seconds, positive values imply the current clock is "fast",
* negative values imply clock is slow.
*
* @param timeOffset
* The optional value for time offset (in seconds) for this client.
*
* @return the updated web service client
*/
public AmazonWebServiceClient withTimeOffset(int timeOffset) {
checkMutability();
setTimeOffset(timeOffset);
return this;
}
/**
* Returns the optional value for time offset for this client. This
* value will be applied to all requests processed through this client.
* Value is in seconds, positive values imply the current clock is "fast",
* negative values imply clock is slow.
*
* @return The optional value for time offset (in seconds) for this client.
*/
public int getTimeOffset() {
return timeOffset;
}
/**
* Returns the client specific {@link RequestMetricCollector}; or null if
* there is none.
*/
public RequestMetricCollector getRequestMetricsCollector() {
return client.getRequestMetricCollector();
}
/**
* Returns {@link MonitoringListener}; or null if there is none.
*/
public Collection getMonitoringListeners() {
return Collections.unmodifiableCollection(monitoringListeners);
}
/**
* Returns the client specific request metric collector if there is one; or
* the one at the AWS SDK level otherwise.
*/
protected RequestMetricCollector requestMetricCollector() {
RequestMetricCollector mc = client.getRequestMetricCollector();
return mc == null ? AwsSdkMetrics.getRequestMetricCollector() : mc;
}
/**
* Returns the most specific request metric collector, starting from the request level, then
* client level, then finally the AWS SDK level.
*/
private final RequestMetricCollector findRequestMetricCollector(
RequestMetricCollector reqLevelMetricsCollector) {
RequestMetricCollector requestMetricCollector;
if (reqLevelMetricsCollector != null) {
requestMetricCollector = reqLevelMetricsCollector;
} else if (getRequestMetricsCollector() != null) {
requestMetricCollector = getRequestMetricsCollector();
} else {
requestMetricCollector = AwsSdkMetrics.getRequestMetricCollector();
}
return requestMetricCollector;
}
/**
* Notify request handlers that we are about to start execution.
*/
protected final T beforeClientExecution(T request) {
T local = request;
for (RequestHandler2 handler : requestHandler2s) {
local = (T) handler.beforeExecution(local);
}
return local;
}
/**
* Convenient method to end the client execution without logging the
* awsRequestMetrics.
*/
protected final void endClientExecution(
AWSRequestMetrics awsRequestMetrics, Request request,
Response response) {
this.endClientExecution(awsRequestMetrics, request, response,
!LOGGING_AWS_REQUEST_METRIC);
}
/**
* Common routine to end a client AWS request/response execution and collect
* the request metrics. Caller of this routine is responsible for starting
* the event for {@link Field#ClientExecuteTime} and call this method
* in a try-finally block.
*
* @param loggingAwsRequestMetrics deprecated and ignored
*/
protected final void endClientExecution(
AWSRequestMetrics awsRequestMetrics, Request request,
Response response, @Deprecated boolean loggingAwsRequestMetrics) {
if (request != null) {
awsRequestMetrics.endEvent(Field.ClientExecuteTime);
awsRequestMetrics.getTimingInfo().endTiming();
RequestMetricCollector c = findRequestMetricCollector(
request.getOriginalRequest().getRequestMetricCollector());
c.collectMetrics(request, response);
awsRequestMetrics.log();
}
}
/**
* @deprecated by {@link #getServiceName()}.
*/
@Deprecated
protected String getServiceAbbreviation() {
return getServiceNameIntern();
}
/**
* Returns the service abbreviation for this service, used for identifying
* service endpoints by region, identifying the necessary signer, etc.
* Used to be call "getServiceAbbreviation".
*/
public String getServiceName() {
return getServiceNameIntern();
}
/**
* @return the service name that should be used when computing the region
* endpoints. This method returns the value of the
* regionMetadataServiceName configuration in the internal config
* file if such configuration is specified for the current client,
* otherwise it returns the same service name that is used for
* request signing.
*/
public String getEndpointPrefix() {
if (endpointPrefix != null) {
return endpointPrefix;
}
String httpClientName = getHttpClientName();
String serviceNameInRegionMetadata = ServiceNameFactory.
getServiceNameInRegionMetadata(httpClientName);
synchronized (this) {
if (endpointPrefix != null) {
return endpointPrefix;
}
if (serviceNameInRegionMetadata != null) {
return endpointPrefix = serviceNameInRegionMetadata;
} else {
return endpointPrefix = getServiceNameIntern();
}
}
}
/**
* @return The region used to sign requests with AWS SigV4 auth.
*/
@SdkProtectedApi
protected String getSigningRegion() {
return this.signingRegion;
}
/**
* An internal method used to explicitly override the service name for region metadata.
* This service name is used to compute the region endpoints.
*/
protected void setEndpointPrefix(String endpointPrefix) {
if (endpointPrefix == null) {
throw new IllegalArgumentException(
"The parameter endpointPrefix must be specified!");
}
this.endpointPrefix = endpointPrefix;
}
/**
* Internal method for implementing {@link #getServiceName()}. Method is
* protected by intent so peculiar subclass that don't follow the class
* naming convention can choose to return whatever service name as needed.
*/
protected String getServiceNameIntern() {
if (serviceName == null) {
synchronized (this) {
if (serviceName == null) {
return serviceName = computeServiceName();
}
}
}
return serviceName;
}
/**
* An internal method used to explicitly override the service name
* computed by the default implementation. This method is not expected to be
* normally called except for AWS internal development purposes.
*/
public final void setServiceNameIntern(String serviceName) {
if (serviceName == null)
throw new IllegalArgumentException(
"The parameter serviceName must be specified!");
this.serviceName = serviceName;
}
/**
* Returns the service name of this AWS http client by first looking it up from the SDK internal
* configuration, and if not found, derive it from the class name of the immediate subclass of
* {@link AmazonWebServiceClient}. No configuration is necessary if the simple class name of the
* http client follows the convention of (Amazon|AWS).*(JavaClient|Client).
*/
private String computeServiceName() {
final String httpClientName = getHttpClientName();
String service = ServiceNameFactory.getServiceName(httpClientName);
if (service != null) {
return service; // only if it is so explicitly configured
}
// Otherwise, make use of convention over configuration
int j = httpClientName.indexOf("JavaClient");
if (j == -1) {
j = httpClientName.indexOf("Client");
if (j == -1) {
throw new IllegalStateException(
"Unrecognized suffix for the AWS http client class name " + httpClientName);
}
}
int i = httpClientName.indexOf(AMAZON);
int len;
if (i == -1) {
i = httpClientName.indexOf(AWS);
if (i == -1) {
throw new IllegalStateException(
"Unrecognized prefix for the AWS http client class name " + httpClientName);
}
len = AWS.length();
} else {
len = AMAZON.length();
}
if (i >= j) {
throw new IllegalStateException(
"Unrecognized AWS http client class name " + httpClientName);
}
String serviceName = httpClientName.substring(i + len, j);
return StringUtils.lowerCase(serviceName);
}
private String getHttpClientName() {
Class httpClientClass = Classes.childClassOf(AmazonWebServiceClient.class, this);
return httpClientClass.getSimpleName();
}
/**
* Returns the signer region override.
*
* @see #setSignerRegionOverride(String).
*/
public final String getSignerRegionOverride() {
return signerRegionOverride;
}
/**
* An internal method used to explicitly override the internal signer region
* computed by the default implementation. This method is not expected to be
* normally called except for AWS internal development purposes.
*/
public final void setSignerRegionOverride(String signerRegionOverride) {
checkMutability();
Signer signer = computeSignerByURI(endpoint, signerRegionOverride, true);
synchronized(this) {
this.signerRegionOverride = signerRegionOverride;
this.signerProvider = createSignerProvider(signer);
this.signingRegion = signerRegionOverride;
}
}
/**
* Fluent method for {@link #setRegion(Region)}.
*
* Example:
*
* AmazonDynamoDBClient client = new AmazonDynamoDBClient(...).withRegion(...);
*
* @see #setRegion(Region)
* @deprecated use {@link AwsClientBuilder#withRegion(Region)} for example:
* {@code AmazonSNSClientBuilder.standard().withRegion(region).build();}
*/
@Deprecated
public T withRegion(Region region) {
setRegion(region);
@SuppressWarnings("unchecked") T t= (T)this;
return t;
}
/**
* Convenient fluent method for setting region.
*
* @param region region to set to; must not be null.
*
* @see #withRegion(Region)
* @deprecated use {@link AwsClientBuilder#withRegion(Regions)} for example:
* {@code AmazonSNSClientBuilder.standard().withRegion(region).build();}
*/
@Deprecated
public T withRegion(Regions region) {
configureRegion(region);
@SuppressWarnings("unchecked") T t= (T)this;
return t;
}
/**
* Fluent method for {@link #setEndpoint(String)}.
*
* Example:
*
* AmazonDynamoDBClient client = new AmazonDynamoDBClient(...).withEndPoint(...);
*
* @see #setEndpoint(String)
* @deprecated use {@link AwsClientBuilder#withEndpointConfiguration(AwsClientBuilder.EndpointConfiguration)} for example:
* {@code AmazonSNSClientBuilder.standard().withEndpointConfiguration(new EndpointConfiguration(endpoint, signingRegion)).build();}
*/
@Deprecated
public T withEndpoint(String endpoint) {
setEndpoint(endpoint);
@SuppressWarnings("unchecked") T t= (T)this;
return t;
}
/**
* Internal only API to lock a client's mutable methods. Only intended for use by the fluent
* builders.
*/
@Deprecated
@SdkInternalApi
public final void makeImmutable() {
this.isImmutable = true;
}
/**
* If the client has been marked as immutable then throw an {@link
* UnsupportedOperationException}, otherwise do nothing. Should be called by each mutating
* method.
*/
@SdkProtectedApi
protected final void checkMutability() {
if (isImmutable) {
throw new UnsupportedOperationException(
"Client is immutable when created with the builder.");
}
}
/**
* Hook to allow S3 client to disable strict hostname verification since it uses wildcard
* certificates.
*
* @return True if strict hostname verification should be used, false otherwise.
*/
protected boolean useStrictHostNameVerification() {
return true;
}
/**
* Hook to allow clients to override CRC32 calculation behavior. Currently, only exercised by DynamoDB.
*
* @return True if the service returns CRC32 checksum from the compressed data, false otherwise.
*/
protected boolean calculateCRC32FromCompressedData() {
return false;
}
public String getSignerOverride() {
return clientConfiguration.getSignerOverride();
}
public ClientConfiguration getClientConfiguration() {
return new ClientConfiguration(clientConfiguration);
}
/**
* @return {@code true} if Client Side Monitoring is enabled, {@code false}
* otherwise.
*/
protected final boolean isCsmEnabled() {
return csmConfiguration != null && csmConfiguration.isEnabled();
}
protected String getClientId() {
if (csmConfiguration == null) {
return DEFAULT_CLIENT_ID;
}
return csmConfiguration.getClientId();
}
/**
* Convenience method to return {@code null} if the provider throws {@code
* SdkClientException}.
*/
private CsmConfiguration getCsmConfiguration(
CsmConfigurationProvider csmConfigurationProvider) {
try {
return csmConfigurationProvider.getConfiguration();
} catch (SdkClientException e) {
return null;
}
}
}