/*
* Copyright 2010 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 com.amazonaws.util.VersionInfoUtils;
/**
* Client configuration options such as proxy settings, user agent string, max
* retry attempts, etc.
*/
public class ClientConfiguration {
/**
* The default HTTP user agent header for AWS Java SDK clients.
*/
public static final String DEFAULT_USER_AGENT = VersionInfoUtils.getUserAgent();
/** The HTTP user agent header passed with all HTTP requests. */
private String userAgent = DEFAULT_USER_AGENT;
/**
* The maximum number of times that a retryable failed request (ex: a 5xx
* response from a service) will be retried.
*/
private int maxErrorRetry = 3;
/**
* The protocol to use when connecting to Amazon Web Services.
* <p>
* The default configuration is to use HTTPS for all requests for increased
* security.
*/
private Protocol protocol = Protocol.HTTPS;
/** Optionally specifies the proxy host to connect through. */
private String proxyHost = null;
/** Optionally specifies the port on the proxy host to connect through. */
private int proxyPort = -1;
/** Optionally specifies the user name to use when connecting through a proxy. */
private String proxyUsername = null;
/** Optionally specifies the password to use when connecting through a proxy. */
private String proxyPassword = null;
/** The maximum number of open HTTP connections. */
private int maxConnections = 50;
/**
* The amount of time to wait (in milliseconds) for data to be transfered
* over an established, open connection before the connection is timed out.
* A value of 0 means infinity, and is not recommended.
*/
private int socketTimeout = 50 * 1000;
/**
* The amount of time to wait (in milliseconds) when initially establishing
* a connection before giving up and timing out. A value of 0 means
* infinity, and is not recommended.
*/
private int connectionTimeout = 50 * 1000;
/**
* Optional size hint (in bytes) for the low level TCP send buffer. This is
* an advanced option for advanced users who want to tune low level TCP
* parameters to try and squeeze out more performance.
*/
private int socketSendBufferSizeHint = 0;
/**
* Optional size hint (in bytes) for the low level TCP receive buffer. This
* is an advanced option for advanced users who want to tune low level TCP
* parameters to try and squeeze out more performance.
*/
private int socketReceiveBufferSizeHint = 0;
/**
* Returns the protocol (i.e. HTTP or HTTPS) to use when connecting to
* Amazon Web Services.
* <p>
* The default configuration is to use HTTPS for all requests for increased
* security.
* <p>
* Individual clients can also override this setting by explicitly including
* the protocol as part of the endpoint URL when calling
* {@link AmazonWebServiceClient#setEndpoint(String)}.
*
* @return The protocol to use when connecting to Amazon Web Services.
*/
public Protocol getProtocol() {
return protocol;
}
/**
* Sets the protocol (i.e. HTTP or HTTPS) to use when connecting to Amazon
* Web Services.
* <p>
* The default configuration is to use HTTPS for all requests for increased
* security.
* <p>
* Individual clients can also override this setting by explicitly including
* the protocol as part of the endpoint URL when calling
* {@link AmazonWebServiceClient#setEndpoint(String)}.
*
* @param protocol
* The protocol to use when connecting to Amazon Web Services.
*/
public void setProtocol(Protocol protocol) {
this.protocol = protocol;
}
/**
* Sets the protocol (i.e. HTTP or HTTPS) to use when connecting to Amazon
* Web Services, and returns the updated ClientConfiguration object so that
* additional calls may be chained together.
* <p>
* The default configuration is to use HTTPS for all requests for increased
* security.
* <p>
* Individual clients can also override this setting by explicitly including
* the protocol as part of the endpoint URL when calling
* {@link AmazonWebServiceClient#setEndpoint(String)}.
*
* @param protocol
* The protocol to use when connecting to Amazon Web Services.
*
* @return The updated ClientConfiguration object with the new max HTTP
* connections setting.
*/
public ClientConfiguration withProtocol(Protocol protocol) {
setProtocol(protocol);
return this;
}
/**
* Returns the maximum number of allowed open HTTP connections.
*
* @return The maximum number of allowed open HTTP connections.
*/
public int getMaxConnections() {
return maxConnections;
}
/**
* Sets the maximum number of allowed open HTTP connections.
*
* @param maxConnections
* The maximum number of allowed open HTTP connections.
*/
public void setMaxConnections(int maxConnections) {
this.maxConnections = maxConnections;
}
/**
* Sets the maximum number of allowed open HTTP connections and returns the
* updated ClientConfiguration object.
*
* @param maxConnections
* The maximum number of allowed open HTTP connections.
* @return The updated ClientConfiguration object with the new max HTTP
* connections setting.
*/
public ClientConfiguration withMaxConnections(int maxConnections) {
setMaxConnections(maxConnections);
return this;
}
/**
* Returns the HTTP user agent header to send with all requests.
*
* @return The user agent string to use when sending requests.
*/
public String getUserAgent() {
return userAgent;
}
/**
* Sets the HTTP user agent header to send with all requests.
*
* @param userAgent
* The user agent string to use when sending requests.
*/
public void setUserAgent(String userAgent) {
this.userAgent = userAgent;
}
/**
* Sets the HTTP user agent header used in requests and returns the updated
* ClientConfiguration object.
*
* @param userAgent
* The user agent string to use when sending requests.
*
* @return The updated ClientConfiguration object.
*/
public ClientConfiguration withUserAgent(String userAgent) {
setUserAgent(userAgent);
return this;
}
/**
* Returns the optional proxy host the client will connect through.
*
* @return The proxy host the client will connect through.
*/
public String getProxyHost() {
return proxyHost;
}
/**
* Sets the optional proxy host the client will connect through.
*
* @param proxyHost
* The proxy host the client will connect through.
*/
public void setProxyHost(String proxyHost) {
this.proxyHost = proxyHost;
}
/**
* Sets the optional proxy host the client will connect through and returns
* the updated ClientConfiguration object.
*
* @param proxyHost
* The proxy host the client will connect through.
*
* @return The updated ClientConfiguration object.
*/
public ClientConfiguration withProxyHost(String proxyHost) {
setProxyHost(proxyHost);
return this;
}
/**
* Returns the optional proxy port the client will connect through.
*
* @return The proxy port the client will connect through.
*/
public int getProxyPort() {
return proxyPort;
}
/**
* Sets the optional proxy port the client will connect through.
*
* @param proxyPort
* The proxy port the client will connect through.
*/
public void setProxyPort(int proxyPort) {
this.proxyPort = proxyPort;
}
/**
* Sets the optional proxy port the client will connect through and returns
* the updated ClientConfiguration object.
*
* @param proxyPort
* The proxy port the client will connect through.
*
* @return The updated ClientConfiguration object.
*/
public ClientConfiguration withProxyPort(int proxyPort) {
setProxyPort(proxyPort);
return this;
}
/**
* Returns the optional proxy user name to use if connecting through a
* proxy.
*
* @return The optional proxy user name the configured client will use if
* connecting through a proxy.
*/
public String getProxyUsername() {
return proxyUsername;
}
/**
* Sets the optional proxy user name to use if connecting through a proxy.
*
* @param proxyUsername
* The proxy user name to use if connecting through a proxy.
*/
public void setProxyUsername(String proxyUsername) {
this.proxyUsername = proxyUsername;
}
/**
* Sets the optional proxy user name and returns the updated
* ClientConfiguration object.
*
* @param proxyUsername
* The proxy user name to use if connecting through a proxy.
*
* @return The updated ClientConfiguration object.
*/
public ClientConfiguration withProxyUsername(String proxyUsername) {
setProxyUsername(proxyUsername);
return this;
}
/**
* Returns the optional proxy password to use when connecting through a
* proxy.
*
* @return The password to use when connecting through a proxy.
*/
public String getProxyPassword() {
return proxyPassword;
}
/**
* Sets the optional proxy password to use when connecting through a proxy.
*
* @param proxyPassword
* The password to use when connecting through a proxy.
*/
public void setProxyPassword(String proxyPassword) {
this.proxyPassword = proxyPassword;
}
/**
* Sets the optional proxy password to use when connecting through a proxy,
* and returns the updated ClientConfiguration object.
*
* @param proxyPassword
* The password to use when connecting through a proxy.
*
* @return The updated ClientConfiguration object.
*/
public ClientConfiguration withProxyPassword(String proxyPassword) {
setProxyPassword(proxyPassword);
return this;
}
/**
* Returns the maximum number of retry attempts for failed retryable
* requests (ex: 5xx error responses from a service).
*
* @return The maximum number of retry attempts for failed retryable
* requests.
*/
public int getMaxErrorRetry() {
return maxErrorRetry;
}
/**
* Sets the maximum number of retry attempts for failed retryable requests
* (ex: 5xx error responses from services).
*
* @param maxErrorRetry
* The maximum number of retry attempts for failed retryable
* requests.
*/
public void setMaxErrorRetry(int maxErrorRetry) {
this.maxErrorRetry = maxErrorRetry;
}
/**
* Sets the maximum number of retry attempts for failed retryable requests
* (ex: 5xx error responses from services), and returns the updated
* ClientConfiguration object.
*
* @param maxErrorRetry
* The maximum number of retry attempts for failed retryable
* requests.
*
* @return The updated ClientConfiguration object.
*/
public ClientConfiguration withMaxErrorRetry(int maxErrorRetry) {
setMaxErrorRetry(maxErrorRetry);
return this;
}
/**
* Returns the amount of time to wait (in milliseconds) for data to be
* transfered over an established, open connection before the connection
* times out and is closed. A value of 0 means infinity, and isn't
* recommended.
*
* @return The amount of time to wait (in milliseconds) for data to be
* transfered over an established, open connection before the
* connection times out and is closed.
*/
public int getSocketTimeout() {
return socketTimeout;
}
/**
* Sets the amount of time to wait (in milliseconds) for data to be
* transfered over an established, open connection before the connection
* times out and is closed. A value of 0 means infinity, and isn't recommended.
*
* @param socketTimeout
* The amount of time to wait (in milliseconds) for data to be
* transfered over an established, open connection before the
* connection is times out and is closed.
*/
public void setSocketTimeout(int socketTimeout) {
this.socketTimeout = socketTimeout;
}
/**
* Sets the amount of time to wait (in milliseconds) for data to be
* transfered over an established, open connection before the connection
* times out and is closed, and returns the updated ClientConfiguration
* object so that additional method calls may be chained together.
*
* @param socketTimeout
* The amount of time to wait (in milliseconds) for data to be
* transfered over an established, open connection before the
* connection is times out and is closed.
*
* @return The updated ClientConfiguration object.
*/
public ClientConfiguration withSocketTimeout(int socketTimeout) {
setSocketTimeout(socketTimeout);
return this;
}
/**
* Returns the amount of time to wait (in milliseconds) when initially
* establishing a connection before giving up and timing out. A value of 0
* means infinity, and is not recommended.
*
* @return The amount of time to wait (in milliseconds) when initially
* establishing a connection before giving up and timing out.
*/
public int getConnectionTimeout() {
return connectionTimeout;
}
/**
* Sets the amount of time to wait (in milliseconds) when initially
* establishing a connection before giving up and timing out. A value of 0
* means infinity, and is not recommended.
*
* @param connectionTimeout
* The amount of time to wait (in milliseconds) when initially
* establishing a connection before giving up and timing out.
*/
public void setConnectionTimeout(int connectionTimeout) {
this.connectionTimeout = connectionTimeout;
}
/**
* Sets the amount of time to wait (in milliseconds) when initially
* establishing a connection before giving up and timing out, and returns
* the updated ClientConfiguration object so that additional method calls
* may be chained together.
*
* @param connectionTimeout
* the amount of time to wait (in milliseconds) when initially
* establishing a connection before giving up and timing out.
*
* @return The updated ClientConfiguration object.
*/
public ClientConfiguration withConnectionTimeout(int connectionTimeout) {
setConnectionTimeout(connectionTimeout);
return this;
}
/**
* Returns the optional size hints (in bytes) for the low level TCP send and
* receive buffers. This is an advanced option for advanced users who want
* to tune low level TCP parameters to try and squeeze out more performance.
* <p>
* The optimal TCP buffer sizes for a particular application are highly
* dependent on network configuration and operating system configuration and
* capabilities. For example, most modern operating systems provide
* auto-tuning functionality for TCP buffer sizes, which can have a big
* impact on performance for TCP connections that are held open long enough
* for the auto-tuning to optimize buffer sizes.
* <p>
* Large buffer sizes (ex: 2MB) will allow the operating system to buffer
* more data in memory without requiring the remote server to acknowledge
* receipt of that information, so can be particularly useful when the
* network has high latency.
* <p>
* This is only a <b>hint</b>, and the operating system may choose not to
* honor it. When using this option, users should <b>always</b> check the
* operating system's configured limits and defaults. Most OS's have a
* maximum TCP buffer size limit configured, and won't let you go beyond
* that limit unless you explicitly raise the max TCP buffer size limit.
* <p>
* There are many resources available online to help with configuring TCP
* buffer sizes and operating system specific TCP settings, including:
* <ul>
* <li>http://onlamp.com/pub/a/onlamp/2005/11/17/tcp_tuning.html</li>
* <li>http://fasterdata.es.net/TCP-tuning/</li>
* </ul>
*
* @return A two element array containing first the TCP send buffer size
* hint and then the TCP receive buffer size hint.
*/
public int[] getSocketBufferSizeHints() {
return new int[] {socketSendBufferSizeHint, socketReceiveBufferSizeHint};
}
/**
* Sets the optional size hints (in bytes) for the low level TCP send and
* receive buffers. This is an advanced option for advanced users who want
* to tune low level TCP parameters to try and squeeze out more performance.
* <p>
* The optimal TCP buffer sizes for a particular application are highly
* dependent on network configuration and operating system configuration and
* capabilities. For example, most modern operating systems provide
* auto-tuning functionality for TCP buffer sizes, which can have a big
* impact on performance for TCP connections that are held open long enough
* for the auto-tuning to optimize buffer sizes.
* <p>
* Large buffer sizes (ex: 2MB) will allow the operating system to buffer
* more data in memory without requiring the remote server to acknowledge
* receipt of that information, so can be particularly useful when the
* network has high latency.
* <p>
* This is only a <b>hint</b>, and the operating system may choose not to
* honor it. When using this option, users should <b>always</b> check the
* operating system's configured limits and defaults. Most OS's have a
* maximum TCP buffer size limit configured, and won't let you go beyond
* that limit unless you explicitly raise the max TCP buffer size limit.
* <p>
* There are many resources available online to help with configuring TCP
* buffer sizes and operating system specific TCP settings, including:
* <ul>
* <li>http://onlamp.com/pub/a/onlamp/2005/11/17/tcp_tuning.html</li>
* <li>http://fasterdata.es.net/TCP-tuning/</li>
* </ul>
*
* @param socketSendBufferSizeHint
* The size hint (in bytes) for the low level TCP send buffer.
* @param socketReceiveBufferSizeHint
* The size hint (in bytes) for the low level TCP receive buffer.
*/
public void setSocketBufferSizeHints(
int socketSendBufferSizeHint, int socketReceiveBufferSizeHint) {
this.socketSendBufferSizeHint = socketSendBufferSizeHint;
this.socketReceiveBufferSizeHint = socketReceiveBufferSizeHint;
}
/**
* Sets the optional size hints (in bytes) for the low level TCP send and
* receive buffers, and returns the updated ClientConfiguration object so
* that additional method calls may be chained together.
* <p>
* This is an advanced option for advanced users who want to tune low level
* TCP parameters to try and squeeze out more performance.
* <p>
* The optimal TCP buffer sizes for a particular application are highly
* dependent on network configuration and operating system configuration and
* capabilities. For example, most modern operating systems provide
* auto-tuning functionality for TCP buffer sizes, which can have a big
* impact on performance for TCP connections that are held open long enough
* for the auto-tuning to optimize buffer sizes.
* <p>
* Large buffer sizes (ex: 2MB) will allow the operating system to buffer
* more data in memory without requiring the remote server to acknowledge
* receipt of that information, so can be particularly useful when the
* network has high latency.
* <p>
* This is only a <b>hint</b>, and the operating system may choose not to
* honor it. When using this option, users should <b>always</b> check the
* operating system's configured limits and defaults. Most OS's have a
* maximum TCP buffer size limit configured, and won't let you go beyond
* that limit unless you explicitly raise the max TCP buffer size limit.
* <p>
* There are many resources available online to help with configuring TCP
* buffer sizes and operating system specific TCP settings, including:
* <ul>
* <li>http://onlamp.com/pub/a/onlamp/2005/11/17/tcp_tuning.html</li>
* <li>http://fasterdata.es.net/TCP-tuning/</li>
* </ul>
*
* @param socketSendBufferSizeHint
* The size hint (in bytes) for the low level TCP send buffer.
* @param socketReceiveBufferSizeHint
* The size hint (in bytes) for the low level TCP receive buffer.
*
* @return The updated ClientConfiguration object.
*/
public ClientConfiguration withSocketBufferSizeHints(
int socketSendBufferSizeHint, int socketReceiveBufferSizeHint) {
setSocketBufferSizeHints(socketSendBufferSizeHint, socketReceiveBufferSizeHint);
return this;
}
}