132 lines
3.5 KiB
Go
132 lines
3.5 KiB
Go
package aws
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import (
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"fmt"
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"log"
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"strings"
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"unicode"
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"github.com/hashicorp/terraform/helper/multierror"
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"github.com/mitchellh/goamz/autoscaling"
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"github.com/mitchellh/goamz/aws"
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"github.com/mitchellh/goamz/ec2"
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"github.com/mitchellh/goamz/elb"
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"github.com/mitchellh/goamz/rds"
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"github.com/mitchellh/goamz/s3"
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awsGo "github.com/awslabs/aws-sdk-go/aws"
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"github.com/awslabs/aws-sdk-go/gen/route53"
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)
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type Config struct {
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AccessKey string
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SecretKey string
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Region string
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}
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type AWSClient struct {
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ec2conn *ec2.EC2
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elbconn *elb.ELB
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autoscalingconn *autoscaling.AutoScaling
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s3conn *s3.S3
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rdsconn *rds.Rds
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r53conn *route53.Route53
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}
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// Client configures and returns a fully initailized AWSClient
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func (c *Config) Client() (interface{}, error) {
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var client AWSClient
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// Get the auth and region. This can fail if keys/regions were not
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// specified and we're attempting to use the environment.
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var errs []error
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log.Println("[INFO] Building AWS auth structure")
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auth, err := c.AWSAuth()
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if err != nil {
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errs = append(errs, err)
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}
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log.Println("[INFO] Building AWS region structure")
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region, err := c.AWSRegion()
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if err != nil {
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errs = append(errs, err)
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}
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if len(errs) == 0 {
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log.Println("[INFO] Initializing EC2 connection")
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client.ec2conn = ec2.New(auth, region)
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log.Println("[INFO] Initializing ELB connection")
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client.elbconn = elb.New(auth, region)
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log.Println("[INFO] Initializing AutoScaling connection")
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client.autoscalingconn = autoscaling.New(auth, region)
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log.Println("[INFO] Initializing S3 connection")
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client.s3conn = s3.New(auth, region)
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log.Println("[INFO] Initializing RDS connection")
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client.rdsconn = rds.New(auth, region)
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log.Println("[INFO] Initializing Route53 connection")
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creds := awsGo.Creds(c.AccessKey, c.SecretKey, "")
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// aws-sdk-go uses v4 for signing requests, which requires all global
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// endpoints to use 'us-east-1'.
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// See http://docs.aws.amazon.com/general/latest/gr/sigv4_changes.html
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client.r53conn = route53.New(creds, "us-east-1", nil)
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}
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if len(errs) > 0 {
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return nil, &multierror.Error{Errors: errs}
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}
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return &client, nil
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}
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// AWSAuth returns a valid aws.Auth object for access to AWS services, or
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// an error if the authentication couldn't be resolved.
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//
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// TODO(mitchellh): Test in some way.
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func (c *Config) AWSAuth() (aws.Auth, error) {
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auth, err := aws.GetAuth(c.AccessKey, c.SecretKey)
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if err == nil {
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// Store the accesskey and secret that we got...
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c.AccessKey = auth.AccessKey
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c.SecretKey = auth.SecretKey
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}
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return auth, err
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}
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// IsValidRegion returns true if the configured region is a valid AWS
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// region and false if it's not
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func (c *Config) IsValidRegion() bool {
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var regions = [11]string{"us-east-1", "us-west-2", "us-west-1", "eu-west-1",
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"eu-central-1", "ap-southeast-1", "ap-southeast-2", "ap-northeast-1",
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"sa-east-1", "cn-north-1", "us-gov-west-1"}
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for _, valid := range regions {
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if c.Region == valid {
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return true
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}
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}
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return false
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}
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// AWSRegion returns the configured region.
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//
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// TODO(mitchellh): Test in some way.
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func (c *Config) AWSRegion() (aws.Region, error) {
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if c.Region != "" {
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if c.IsValidRegion() {
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return aws.Regions[c.Region], nil
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} else {
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return aws.Region{}, fmt.Errorf("Not a valid region: %s", c.Region)
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}
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}
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md, err := aws.GetMetaData("placement/availability-zone")
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if err != nil {
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return aws.Region{}, err
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}
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region := strings.TrimRightFunc(string(md), unicode.IsLetter)
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return aws.Regions[region], nil
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}
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