AWS SDK for Go を使ってS3にファイルをアップロードする ref: http://qiita.com/funnythingz/items/1f69164df6759cc22a74

app.go

package main

import (
	"fmt"
	"github.com/aws/aws-sdk-go/aws"
	"github.com/aws/aws-sdk-go/aws/awsutil"
	"github.com/aws/aws-sdk-go/aws/credentials"
	"github.com/aws/aws-sdk-go/service/s3"
	"log"
	"os"
)

func main() {
	fileTransfer := FileTransferToS3{
		AccessKeyId:     "ACCESS_KEY_ID",
		SecretAccessKey: "SECRET_ACCESS_KEY",
		Region:          "us-west-2",
		BucketName:      "bucket-name",
	}

	fileTransfer.PutToS3("./", "sample.jpg")
}

type FileTransferToS3 struct {
	AccessKeyId     string
	SecretAccessKey string
	Region          string
	BucketName      string
}

func (f *FileTransferToS3) PutToS3(path string, filename string) {
	file, err := os.Open(fmt.Sprintf("%s%s", path, filename))
	if err != nil {
		log.Println(err.Error())
	}
	defer file.Close()

	cli := s3.New(&aws.Config{
		Credentials: credentials.NewStaticCredentials(f.AccessKeyId, f.SecretAccessKey, ""),
		Region:      f.Region,
	})

	resp, err := cli.PutObject(&s3.PutObjectInput{
		Bucket: aws.String(f.BucketName),
		Key:    aws.String(filename),
		Body:   file,
	})
	if err != nil {
		log.Println(err.Error())
	}

	log.Println(awsutil.StringValue(resp))
}

cloudformation.template.json

{
  "AWSTemplateFormatVersion": "2010-09-09",
  "Parameters": {
  },
  "Resources": {
    "DemoBucket" : {
      "Type" : "AWS::S3::Bucket",
      "Properties" : {
        "AccessControl" : "PublicReadWrite",
        "BucketName" : "sample-demo",
        "Tags": [
          {
            "Key": "Name",
            "Value": "demo"
          },
          {
            "Key": "Role",
            "Value": "s3"
          }
        ]
      }
    },
    "DemoBucketPolicy" : {
      "Type" : "AWS::S3::BucketPolicy",
      "Properties" : {
        "Bucket" : { "Ref" : "DemoBucket" },
        "PolicyDocument" : {
          "Version": "2008-10-17",
          "Statement": [
            {
              "Sid": "PublicReadGetObject",
              "Effect": "Allow",
              "Principal": {
                "AWS": "*"
              },
              "Action": "s3:GetObject",
              "Resource": "arn:aws:s3:::sample-demo/*"
            }
          ]
        }
      },
      "DependsOn": "DemoBucket"
    }
  },
  "Description": "s3"
}

file0.txt

{
  "AWSTemplateFormatVersion": "2010-09-09",
  "Parameters": {
  },
  "Resources": {
    "DemoBucket" : {
      "Type" : "AWS::S3::Bucket",
      "Properties" : {
        "AccessControl" : "PublicReadWrite",
        "BucketName" : "sample-demo",
        "Tags": [
          {
            "Key": "Name",
            "Value": "demo"
          },
          {
            "Key": "Role",
            "Value": "s3"
          }
        ]
      }
    },
    "DemoBucketPolicy" : {
      "Type" : "AWS::S3::BucketPolicy",
      "Properties" : {
        "Bucket" : { "Ref" : "DemoBucket" },
        "PolicyDocument" : {
          "Version": "2008-10-17",
          "Statement": [
            {
              "Sid": "PublicReadGetObject",
              "Effect": "Allow",
              "Principal": {
                "AWS": "*"
              },
              "Action": "s3:GetObject",
              "Resource": "arn:aws:s3:::sample-demo/*"
            }
          ]
        }
      },
      "DependsOn": "DemoBucket"
    }
  },
  "Description": "s3"
}

file1.txt

$ go get github.com/mattn/gom

file2.txt

gom 'github.com/aws/aws-sdk-go/aws'
gom 'github.com/aws/aws-sdk-go/service/s3'

file3.txt

$ gom install

file4.go

package main

import (
    "fmt"
    "github.com/aws/aws-sdk-go/aws"
    "github.com/aws/aws-sdk-go/aws/awsutil"
    "github.com/aws/aws-sdk-go/aws/credentials"
    "github.com/aws/aws-sdk-go/service/s3"
    "log"
    "os"
)

func main() {
    fileTransfer := FileTransferToS3{
        AccessKeyId:     "ACCESS_KEY_ID",
        SecretAccessKey: "SECRET_ACCESS_KEY",
        Region:          "us-west-2",
        BucketName:      "bucket-name",
    }

    fileTransfer.PutToS3("./", "sample.jpg")
}

type FileTransferToS3 struct {
    AccessKeyId     string
    SecretAccessKey string
    Region          string
    BucketName      string
}

func (f *FileTransferToS3) PutToS3(path string, filename string) {
    file, err := os.Open(fmt.Sprintf("%s%s", path, filename))
    if err != nil {
        log.Println(err.Error())
    }
    defer file.Close()

    cli := s3.New(&aws.Config{
        Credentials: credentials.NewStaticCredentials(f.AccessKeyId, f.SecretAccessKey, ""),
        Region:      f.Region,
    })

    resp, err := cli.PutObject(&s3.PutObjectInput{
        Bucket: aws.String(f.BucketName),
        Key:    aws.String(filename),
        Body:   file,
    })
    if err != nil {
        log.Println(err.Error())
    }

    log.Println(awsutil.StringValue(resp))
}

file5.txt

$ gom run app.go

goget-sh

$ go get github.com/mattn/gom

gom-sh

$ gom install

Gomfile

gom 'github.com/aws/aws-sdk-go/aws'
gom 'github.com/aws/aws-sdk-go/service/s3'

run-sh

$ gom run app.go