Constants.java

/*
 * Copyright 2010-2013 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.services.s3.internal;

/**
 * Constants used by the AWS S3 Java client.
 */
public class Constants {

    /** Default hostname for the S3 service endpoint */
    public static String S3_HOSTNAME = "s3.amazonaws.com";

    /** Service name for Amazon S3 */
    public static String S3_SERVICE_NAME = "Amazon S3";

    /** Default encoding used for text data */
    public static String DEFAULT_ENCODING = "UTF-8";

    /** HMAC/SHA1 Algorithm per RFC 2104, used when signing S3 requests */
    public static final String HMAC_SHA1_ALGORITHM = "HmacSHA1";

    /** XML namespace URL used when sending S3 requests containing XML */
    public static final String XML_NAMESPACE = "http://s3.amazonaws.com/doc/2006-03-01/";

    /** Represents a null S3 version ID */
    public static final String NULL_VERSION_ID = "null";

    /**
     * HTTP status code indicating that preconditions failed and thus the
     * request failed.
     */
    public static final int FAILED_PRECONDITION_STATUS_CODE = 412;

    /** Kilobytes */
    public static final int KB = 1024;

    /** Megabytes */
    public static final int MB = 1024 * KB;

    /** Gigabytes */
    public static final long GB = 1024 * MB;

    /** The maximum allowed parts in a multipart upload. */
    public static final int MAXIMUM_UPLOAD_PARTS = 10000;

    /**
     * The default size of the buffer when uploading data from a stream. A
     * buffer of this size will be created and filled with the first bytes from
     * a stream being uploaded so that any transmit errors that occur in that
     * section of the data can be automatically retried without the caller's
     * intervention.
     */
    public static final int DEFAULT_STREAM_BUFFER_SIZE = 128 * KB;
}