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Viewing changes to src/launchpad.net/goamz/aws/aws.go

  • Committer: Package Import Robot
  • Author(s): James Page
  • Date: 2013-04-24 22:34:47 UTC
  • Revision ID: package-import@ubuntu.com-20130424223447-f0qdji7ubnyo0s71
Tags: upstream-1.10.0.1
Import upstream version 1.10.0.1

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Lines of Context:
src/launchpad.net/goamz/aws/aws.go
 
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//
 
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// goamz - Go packages to interact with the Amazon Web Services.
 
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//
 
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//   https://wiki.ubuntu.com/goamz
 
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//
 
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// Copyright (c) 2011 Canonical Ltd.
 
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//
 
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// Written by Gustavo Niemeyer <gustavo.niemeyer@canonical.com>
 
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//
 
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package aws
 
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import (
 
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        "errors"
 
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        "os"
 
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)
 
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// Region defines the URLs where AWS services may be accessed.
 
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//
 
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// See http://goo.gl/d8BP1 for more details.
 
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type Region struct {
 
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        Name                 string // the canonical name of this region.
 
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        EC2Endpoint          string
 
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        S3Endpoint           string
 
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        S3BucketEndpoint     string // Not needed by AWS S3. Use ${bucket} for bucket name.
 
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        S3LocationConstraint bool   // true if this region requires a LocationConstraint declaration.
 
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        S3LowercaseBucket    bool   // true if the region requires bucket names to be lower case.
 
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        SDBEndpoint          string
 
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        SNSEndpoint          string
 
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        SQSEndpoint          string
 
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        IAMEndpoint          string
 
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}
 
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var USEast = Region{
 
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        "us-east-1",
 
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        "https://ec2.us-east-1.amazonaws.com",
 
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        "https://s3.amazonaws.com",
 
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        "",
 
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        false,
 
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        false,
 
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        "https://sdb.amazonaws.com",
 
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        "https://sns.us-east-1.amazonaws.com",
 
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        "https://sqs.us-east-1.amazonaws.com",
 
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        "https://iam.amazonaws.com",
 
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}
 
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var USWest = Region{
 
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        "us-west-1",
 
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        "https://ec2.us-west-1.amazonaws.com",
 
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        "https://s3-us-west-1.amazonaws.com",
 
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        "",
 
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        true,
 
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        true,
 
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        "https://sdb.us-west-1.amazonaws.com",
 
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        "https://sns.us-west-1.amazonaws.com",
 
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        "https://sqs.us-west-1.amazonaws.com",
 
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        "https://iam.amazonaws.com",
 
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}
 
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var USWest2 = Region{
 
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        "us-west-2",
 
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        "https://ec2.us-west-2.amazonaws.com",
 
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        "https://s3-us-west-2.amazonaws.com",
 
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        "",
 
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        true,
 
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        true,
 
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        "https://sdb.us-west-2.amazonaws.com",
 
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        "https://sns.us-west-2.amazonaws.com",
 
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        "https://sqs.us-west-2.amazonaws.com",
 
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        "https://iam.amazonaws.com",
 
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}
 
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var EUWest = Region{
 
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        "eu-west-1",
 
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        "https://ec2.eu-west-1.amazonaws.com",
 
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        "https://s3-eu-west-1.amazonaws.com",
 
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        "",
 
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        true,
 
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        true,
 
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        "https://sdb.eu-west-1.amazonaws.com",
 
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        "https://sns.eu-west-1.amazonaws.com",
 
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        "https://sqs.eu-west-1.amazonaws.com",
 
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        "https://iam.amazonaws.com",
 
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}
 
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var APSoutheast = Region{
 
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        "ap-southeast-1",
 
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        "https://ec2.ap-southeast-1.amazonaws.com",
 
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        "https://s3-ap-southeast-1.amazonaws.com",
 
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        "",
 
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        true,
 
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        true,
 
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        "https://sdb.ap-southeast-1.amazonaws.com",
 
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        "https://sns.ap-southeast-1.amazonaws.com",
 
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        "https://sqs.ap-southeast-1.amazonaws.com",
 
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        "https://iam.amazonaws.com",
 
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}
 
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var APSoutheast2 = Region{
 
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        "ap-southeast-2",
 
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        "https://ec2.ap-southeast-2.amazonaws.com",
 
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        "https://s3-ap-southeast-2.amazonaws.com",
 
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        "",
 
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        true,
 
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        true,
 
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        "https://sdb.ap-southeast-2.amazonaws.com",
 
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        "https://sns.ap-southeast-2.amazonaws.com",
 
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        "https://sqs.ap-southeast-2.amazonaws.com",
 
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        "https://iam.amazonaws.com",
 
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}
 
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var APNortheast = Region{
 
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        "ap-northeast-1",
 
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        "https://ec2.ap-northeast-1.amazonaws.com",
 
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        "https://s3-ap-northeast-1.amazonaws.com",
 
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        "",
 
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        true,
 
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        true,
 
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        "https://sdb.ap-northeast-1.amazonaws.com",
 
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        "https://sns.ap-northeast-1.amazonaws.com",
 
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        "https://sqs.ap-northeast-1.amazonaws.com",
 
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        "https://iam.amazonaws.com",
 
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}
 
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var SAEast = Region{
 
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        "sa-east-1",
 
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        "https://ec2.sa-east-1.amazonaws.com",
 
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        "https://s3-sa-east-1.amazonaws.com",
 
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        "",
 
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        true,
 
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        true,
 
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        "https://sdb.sa-east-1.amazonaws.com",
 
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        "https://sns.sa-east-1.amazonaws.com",
 
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        "https://sqs.sa-east-1.amazonaws.com",
 
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        "https://iam.amazonaws.com",
 
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}
 
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var Regions = map[string]Region{
 
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        APNortheast.Name:  APNortheast,
 
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        APSoutheast.Name:  APSoutheast,
 
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        APSoutheast2.Name: APSoutheast2,
 
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        EUWest.Name:       EUWest,
 
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        USEast.Name:       USEast,
 
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        USWest.Name:       USWest,
 
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        USWest2.Name:      USWest2,
 
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        SAEast.Name:       SAEast,
 
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}
 
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type Auth struct {
 
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        AccessKey, SecretKey string
 
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}
 
151
 
 
152
var unreserved = make([]bool, 128)
 
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var hex = "0123456789ABCDEF"
 
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func init() {
 
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        // RFC3986
 
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        u := "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz01234567890-_.~"
 
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        for _, c := range u {
 
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                unreserved[c] = true
 
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        }
 
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}
 
162
 
 
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// EnvAuth creates an Auth based on environment information.
 
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// The AWS_ACCESS_KEY_ID and AWS_SECRET_ACCESS_KEY environment
 
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// variables are used.
 
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func EnvAuth() (auth Auth, err error) {
 
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        auth.AccessKey = os.Getenv("AWS_ACCESS_KEY_ID")
 
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        auth.SecretKey = os.Getenv("AWS_SECRET_ACCESS_KEY")
 
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        if auth.AccessKey == "" {
 
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                err = errors.New("AWS_ACCESS_KEY_ID not found in environment")
 
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        }
 
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        if auth.SecretKey == "" {
 
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                err = errors.New("AWS_SECRET_ACCESS_KEY not found in environment")
 
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        }
 
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        return
 
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}
 
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// Encode takes a string and URI-encodes it in a way suitable
 
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// to be used in AWS signatures.
 
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func Encode(s string) string {
 
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        encode := false
 
182
        for i := 0; i != len(s); i++ {
 
183
                c := s[i]
 
184
                if c > 127 || !unreserved[c] {
 
185
                        encode = true
 
186
                        break
 
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                }
 
188
        }
 
189
        if !encode {
 
190
                return s
 
191
        }
 
192
        e := make([]byte, len(s)*3)
 
193
        ei := 0
 
194
        for i := 0; i != len(s); i++ {
 
195
                c := s[i]
 
196
                if c > 127 || !unreserved[c] {
 
197
                        e[ei] = '%'
 
198
                        e[ei+1] = hex[c>>4]
 
199
                        e[ei+2] = hex[c&0xF]
 
200
                        ei += 3
 
201
                } else {
 
202
                        e[ei] = c
 
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                        ei += 1
 
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                }
 
205
        }
 
206
        return string(e[:ei])
 
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}