aws

import "github.com/cognusion/go-jar/aws"

• Overview
• Index

Overview

Index

• Variables
• func GetAwsRegion() (region string)
• func GetAwsRegionE() (region string, err error)
• func InitAWS(awsRegion, awsAccessKey, awsSecretKey string) (*session.Session, error)
• func S3urlToParts(url string) (bucket, filePath, filename string)
• type Session
  • func NewSession(awsRegion, awsAccessKey, awsSecretKey string, ec2 bool) (*Session, error)
  • func (s *Session) BucketToFile(bucket, bucketPath, filename string) (size int64, err error)
  • func (s *Session) BucketToWriter(bucket, bucketPath string, out io.Writer) (size int64, err error)
  • func (s *Session) BucketToWriterWithContext(ctx context.Context, bucket, bucketPath string, out io.Writer) (size int64, err error)
  • func (s *Session) BucketUpload(bucket, bucketPath string, file io.Reader) error
  • func (s *Session) BucketUploadWithContext(ctx context.Context, bucket, bucketPath string, file io.Reader) error
  • func (s *Session) GetInstanceAZByIP(ip string) (string, error)
  • func (s *Session) GetInstancesAZByIP(ips []*string) (*map[string]string, error)
  • func (s *Session) S3Client() *s3.S3

Package files

aws.go

Variables

var (
    // DebugOut is a log.Logger for debug messages
    DebugOut = log.New(io.Discard, "", 0)
    // TimingOut is a log.Logger for timing-related debug messages. DEPRECATED
    TimingOut = log.New(io.Discard, "[TIMING] ", 0)
)

func GetAwsRegion

func GetAwsRegion() (region string)

GetAwsRegion returns the region as a string, first consulting the well-known environment variables, then falling back EC2 metadata calls

func GetAwsRegionE

func GetAwsRegionE() (region string, err error)

GetAwsRegionE returns the region as a string and and error, first consulting the well-known environment variables, then falling back EC2 metadata calls

func InitAWS

func InitAWS(awsRegion, awsAccessKey, awsSecretKey string) (*session.Session, error)

InitAWS optionally takes a region, accesskey and secret key, setting AWSSession to the resulting session. If values aren't provided, the well-known environment variables (WKE) are consulted. If they're not available, and running in an EC2 instance, then it will use the local IAM role

func S3urlToParts

func S3urlToParts(url string) (bucket, filePath, filename string)

S3urlToParts explodes an s3://bucket/path/file url into its parts

type Session

type Session struct {
    // AWS is the raw, hopefully initialized AWS Session
    AWS *session.Session
    Me  *ec2metadata.EC2InstanceIdentityDocument
}

Session is a container around an AWS Session, to make AWS operations easier

func NewSession

func NewSession(awsRegion, awsAccessKey, awsSecretKey string, ec2 bool) (*Session, error)

NewSession returns a Session or an error. If ec2 is false, Session.Me will be false.

func (*Session) BucketToFile

func (s *Session) BucketToFile(bucket, bucketPath, filename string) (size int64, err error)

BucketToFile copies a file from an S3 bucket to a local file

func (*Session) BucketToWriter

func (s *Session) BucketToWriter(bucket, bucketPath string, out io.Writer) (size int64, err error)

BucketToWriter copies a file from an S3 bucket to a Writer

func (*Session) BucketToWriterWithContext

func (s *Session) BucketToWriterWithContext(ctx context.Context, bucket, bucketPath string, out io.Writer) (size int64, err error)

BucketToWriterWithContext copies a file from an S3 bucket to a Writer

func (*Session) BucketUpload

func (s *Session) BucketUpload(bucket, bucketPath string, file io.Reader) error

BucketUpload uploads the file to the bucket/bucketPath

func (*Session) BucketUploadWithContext

func (s *Session) BucketUploadWithContext(ctx context.Context, bucket, bucketPath string, file io.Reader) error

BucketUploadWithContext uploads the file to the bucket/bucketPath, with the specified context

func (*Session) GetInstanceAZByIP

func (s *Session) GetInstanceAZByIP(ip string) (string, error)

GetInstanceAZByIP returns an Availability Zone or an error

func (*Session) GetInstancesAZByIP

func (s *Session) GetInstancesAZByIP(ips []*string) (*map[string]string, error)

GetInstancesAZByIP returns a map of IPs to Availability Zones or an error

func (*Session) S3Client

func (s *Session) S3Client() *s3.S3

S3Client returns a raw S3 client from the current session

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