Golang download s3 file

packagemainimport("fmt""os""www.cronistalascolonias.com.ar""www.cronistalascolonias.com.ar""www.cronistalascolonias.com.ar""www.cronistalascolonias.com.ar""www.cronistalascolonias.com.ar")funcmain(){creds:=www.cronistalascolonias.com.articCredentials("アクセスキー","シークレットキー","")sess:=www.cronistalascolonias.com.ar(www.cronistalascolonias.com.arsion(&www.cronistalascolonias.com.ar{Credentials:creds,Region:www.cronistalascolonias.com.ar("ap-northeast-1"),}))filename:="www.cronistalascolonias.com.ar"// Create a downloader with the session and default optionsdownloader:=www.cronistalascolonias.com.arnloader(sess)// Create a file to write the S3 Object contents to.f,err:=www.cronistalascolonias.com.ar(filename)iferr!=nil{www.cronistalascolonias.com.arn(www.cronistalascolonias.com.ar("failed to create file %q, %v",filename,err))return}// Write the contents of S3 Object to the filen,err:=www.cronistalascolonias.com.arad(f,&www.cronistalascolonias.com.arectInput{Bucket:www.cronistalascolonias.com.ar("backet-name"),Key:www.cronistalascolonias.com.ar("/www.cronistalascolonias.com.ar"),})iferr!=nil{www.cronistalascolonias.com.arn(www.cronistalascolonias.com.ar("failed to download file, %v",err))return}www.cronistalascolonias.com.ar("file downloaded, %d bytes\n",n)}// ついでにアップロードは下記funcupload(){accessKey:="your accessKey"privateKey:="your privateKey"region:="ap-northeast-1"fileName:="www.cronistalascolonias.com.ar"bucketName:="your bucketName"creds:=www.cronistalascolonias.com.articCredentials(accessKey,privateKey,"")sess:=www.cronistalascolonias.com.ar(www.cronistalascolonias.com.arsion(&www.cronistalascolonias.com.ar{Credentials:creds,Region:www.cronistalascolonias.com.ar(region),}))uploader:=www.cronistalascolonias.com.aroader(sess)f,err:=www.cronistalascolonias.com.ar(fileName)iferr!=nil{www.cronistalascolonias.com.ar(www.cronistalascolonias.com.ar("failed to open file %q, %v",fileName,err))}res,err:=www.cronistalascolonias.com.ar(&www.cronistalascolonias.com.arInput{Bucket:www.cronistalascolonias.com.ar(bucketName),Key:www.cronistalascolonias.com.ar("/test/"+fileName),Body:f,})iferr!=nil{www.cronistalascolonias.com.arn(res)iferr,ok:=err.(www.cronistalascolonias.com.ar);ok&&www.cronistalascolonias.com.ar()==www.cronistalascolonias.com.aredErrorCode{www.cronistalascolonias.com.arf(www.cronistalascolonias.com.ar,"upload canceled due to timeout, %v\n",err)}else{www.cronistalascolonias.com.arf(www.cronistalascolonias.com.ar,"failed to upload object, %v\n",err)}www.cronistalascolonias.com.ar(1)}www.cronistalascolonias.com.arn("successfully uploaded file!!")}