You are previewing Programming Amazon Web Services.

Programming Amazon Web Services

Cover of Programming Amazon Web Services by James Murty Published by O'Reilly Media, Inc.
  1. Programming Amazon Web Services
    1. SPECIAL OFFER: Upgrade this ebook with O’Reilly
    2. A Note Regarding Supplemental Files
    3. Preface
      1. What’s in This Book?
      2. Ruby and Interactive Examples
      3. Conventions Used in This Book
      4. Using Code Examples
      5. Safari® Enabled
      6. How to Contact Us
      7. Acknowledgments
    4. 1. Infrastructure in the Cloud
      1. Amazon Web Services for Infrastructure
      2. Thinking Like Amazon
      3. Reality Check
      4. Interfaces: REST and Query Versus SOAP
    5. 2. Interacting with Amazon Web Services
      1. REST-Based APIs
      2. User Authentication
      3. Performing AWS Requests
    6. 3. S3: Simple Storage Service
      1. S3 Overview
      2. Interacting with S3
      3. Buckets
      4. Objects
      5. Alternative Hostnames
      6. Access Control Lists
      7. Server Access Logging (Beta)
      8. Signed URIs
      9. Distributing Objects with BitTorrent
    7. 4. S3 Applications
      1. Share Large Files
      2. Online Backup with AWS::S3
      3. S3 Filesystem with ElasticDrive
      4. Mediated Access to S3 with JetS3t
    8. 5. EC2: Elastic Compute Cloud (Beta)
      1. EC2 Overview
      2. Interacting with EC2
      3. Keypairs
      4. Network Security by IP
      5. Finding Amazon Machine Images
      6. Controlling Instances
      7. Log In to an Instance
      8. Security Groups
      9. Managing and Sharing AMIs
      10. Console Output and Instance Reboot
    9. 6. Using EC2 Instances and Images
      1. EC2 Instances in Detail
      2. Data Management in EC2
      3. Modifying an AMI
      4. Registering an AMI
      5. Create an AMI from Scratch
    10. 7. EC2 Applications
      1. Dynamic DNS
      2. On-Demand VPN Server with OpenVPN
      3. Web Photo Album with Gallery 2
    11. 8. SQS: Simple Queue Service
      1. SQS Overview
      2. Interacting with SQS
      3. Queues
      4. Messages
      5. Queue Attributes
      6. Queue Access Control
    12. 9. SQS Applications
      1. Messaging Simulator
      2. Distributed Application Services with BOTO
      3. Automated Management of EC2 Instance Pools with Lifeguard
    13. 10. FPS: Flexible Payments Service (Beta)
      1. FPS Overview
      2. Interacting with FPS
      3. Managing Your Tokens
      4. Acquiring Third-Party Tokens
      5. Pay Now Widgets
    14. 11. FPS Transactions and Accounts
      1. Performing FPS Transactions
      2. Account Management and Information
    15. 12. FPS Advanced Topics
      1. Gatekeeper Language Guide
      2. Micropayments with FPS
      3. Building a Marketplace Application
      4. Subscribing to FPS Event Notifications
    16. 13. SimpleDB (Beta)
      1. SimpleDB Overview
      2. Interacting with SimpleDB
      3. Domains
      4. Items and Attributes
      5. Representing Data in SimpleDB
      6. Performing Queries
      7. Stock Price Database: A Mini SimpleDB Application
    17. A. AWS Resources
      1. AWS Online Resources
      2. Client Tools
      3. API Libraries
      4. Third-Party AWS Solutions
    18. B. AWS API Error Codes
      1. S3: Simple Storage Service
      2. EC2: Elastic Compute Cloud
      3. SQS: Simple Queue Service
      4. FPS: Flexible Payments Service
      5. SimpleDB
    19. Index
    20. About the Author
    21. Colophon
    22. SPECIAL OFFER: Upgrade this ebook with O’Reilly
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Interacting with S3

REST API

The S3 web service application program interface (API) is made available through two interfaces: REST and SOAP. In this book we will use the REST interface.

The S3 service implementation presented in this chapter uses the REST API functionality in the AWS Ruby module. The AWS module includes methods, presented in REST API Implementation” in Chapter 2, that perform authentication, transmission, and response checking of REST API requests.

The REST API interface for the S3 service uses five HTTP methods to perform API operations: GET, HEAD, PUT, DELETE, and POST. The meaning of each method varies slightly, depending on what kind of S3 resource the operation is targeting: an object, a bucket, an Access Control List (ACL), or the S3 service itself. Table 3-1 lists some of the operations you can perform on S3 resources using different HTTP methods.

Table 3-1. Acting on S3 resources with HTTP methods

ResourceGETHEADPUTDELETEPOST
S3 ServiceList your buckets----
BucketList the bucket’s objects-Create the bucketDelete the bucket-
ObjectRetrieve the object’s data and metadataRetrieve the object’s metadataCreate or replace the objectDelete the objectCreate or replace the object
ACL (for a Bucket or Object resource)Retrieve ACL settings-Apply new ACL settings--

The most recent S3 API version available when this book was written, was 2006-03-01. This version number is used as a component of the XML namespace of documents provided to and produced by the service, http://s3.amazonaws.com/doc/2006-03-01/ ...

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