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Contoh Amazon S3 menggunakan skrip AWS CLI Bash
Contoh kode berikut menunjukkan cara melakukan tindakan dan mengimplementasikan skenario umum dengan menggunakan skrip AWS Command Line Interface with Bash dengan Amazon S3.
Dasar-dasar adalah contoh kode yang menunjukkan kepada Anda bagaimana melakukan operasi penting dalam suatu layanan.
Tindakan adalah kutipan kode dari program yang lebih besar dan harus dijalankan dalam konteks. Sementara tindakan menunjukkan cara memanggil fungsi layanan individual, Anda dapat melihat tindakan dalam konteks dalam skenario terkait.
Setiap contoh menyertakan tautan ke kode sumber lengkap, di mana Anda dapat menemukan instruksi tentang cara mengatur dan menjalankan kode dalam konteks.
Hal-hal mendasar
Contoh kode berikut ini menunjukkan cara:
Membuat bucket dan mengunggah file ke dalamnya.
Mengunduh objek dari bucket.
Menyalin objek ke subfolder di bucket.
Membuat daftar objek dalam bucket.
Menghapus objek bucket dan bucket tersebut.
- AWS CLI dengan skrip Bash
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catatan
Ada lebih banyak tentang GitHub. Temukan contoh lengkapnya dan pelajari cara pengaturan dan menjalankannya di Repositori Contoh Kode AWS
. ############################################################################### # function s3_getting_started # # This function creates, copies, and deletes S3 buckets and objects. # # Returns: # 0 - If successful. # 1 - If an error occurred. ############################################################################### function s3_getting_started() { { if [ "$BUCKET_OPERATIONS_SOURCED" != "True" ]; then cd bucket-lifecycle-operations || exit source ./bucket_operations.sh cd .. fi } echo_repeat "*" 88 echo "Welcome to the Amazon S3 getting started demo." echo_repeat "*" 88 echo "A unique bucket will be created by appending a Universally Unique Identifier to a bucket name prefix." echo -n "Enter a prefix for the S3 bucket that will be used in this demo: " get_input bucket_name_prefix=$get_input_result local bucket_name bucket_name=$(generate_random_name "$bucket_name_prefix") local region_code region_code=$(aws configure get region) if create_bucket -b "$bucket_name" -r "$region_code"; then echo "Created demo bucket named $bucket_name" else errecho "The bucket failed to create. This demo will exit." return 1 fi local file_name while [ -z "$file_name" ]; do echo -n "Enter a file you want to upload to your bucket: " get_input file_name=$get_input_result if [ ! -f "$file_name" ]; then echo "Could not find file $file_name. Are you sure it exists?" file_name="" fi done local key key="$(basename "$file_name")" local result=0 if copy_file_to_bucket "$bucket_name" "$file_name" "$key"; then echo "Uploaded file $file_name into bucket $bucket_name with key $key." else result=1 fi local destination_file destination_file="$file_name.download" if yes_no_input "Would you like to download $key to the file $destination_file? (y/n) "; then if download_object_from_bucket "$bucket_name" "$destination_file" "$key"; then echo "Downloaded $key in the bucket $bucket_name to the file $destination_file." else result=1 fi fi if yes_no_input "Would you like to copy $key a new object key in your bucket? (y/n) "; then local to_key to_key="demo/$key" if copy_item_in_bucket "$bucket_name" "$key" "$to_key"; then echo "Copied $key in the bucket $bucket_name to the $to_key." else result=1 fi fi local bucket_items bucket_items=$(list_items_in_bucket "$bucket_name") # shellcheck disable=SC2181 if [[ $? -ne 0 ]]; then result=1 fi echo "Your bucket contains the following items." echo -e "Name\t\tSize" echo "$bucket_items" if yes_no_input "Delete the bucket, $bucket_name, as well as the objects in it? (y/n) "; then bucket_items=$(echo "$bucket_items" | cut -f 1) if delete_items_in_bucket "$bucket_name" "$bucket_items"; then echo "The following items were deleted from the bucket $bucket_name" echo "$bucket_items" else result=1 fi if delete_bucket "$bucket_name"; then echo "Deleted the bucket $bucket_name" else result=1 fi fi return $result }
Fungsi Amazon S3 yang digunakan dalam skenario ini.
############################################################################### # function create-bucket # # This function creates the specified bucket in the specified AWS Region, unless # it already exists. # # Parameters: # -b bucket_name -- The name of the bucket to create. # -r region_code -- The code for an AWS Region in which to # create the bucket. # # Returns: # The URL of the bucket that was created. # And: # 0 - If successful. # 1 - If it fails. ############################################################################### function create_bucket() { local bucket_name region_code response local option OPTARG # Required to use getopts command in a function. # bashsupport disable=BP5008 function usage() { echo "function create_bucket" echo "Creates an Amazon S3 bucket. You must supply a bucket name:" echo " -b bucket_name The name of the bucket. It must be globally unique." echo " [-r region_code] The code for an AWS Region in which the bucket is created." echo "" } # Retrieve the calling parameters. while getopts "b:r:h" option; do case "${option}" in b) bucket_name="${OPTARG}" ;; r) region_code="${OPTARG}" ;; h) usage return 0 ;; \?) echo "Invalid parameter" usage return 1 ;; esac done if [[ -z "$bucket_name" ]]; then errecho "ERROR: You must provide a bucket name with the -b parameter." usage return 1 fi local bucket_config_arg # A location constraint for "us-east-1" returns an error. if [[ -n "$region_code" ]] && [[ "$region_code" != "us-east-1" ]]; then bucket_config_arg="--create-bucket-configuration LocationConstraint=$region_code" fi iecho "Parameters:\n" iecho " Bucket name: $bucket_name" iecho " Region code: $region_code" iecho "" # If the bucket already exists, we don't want to try to create it. if (bucket_exists "$bucket_name"); then errecho "ERROR: A bucket with that name already exists. Try again." return 1 fi # shellcheck disable=SC2086 response=$(aws s3api create-bucket \ --bucket "$bucket_name" \ $bucket_config_arg) # shellcheck disable=SC2181 if [[ ${?} -ne 0 ]]; then errecho "ERROR: AWS reports create-bucket operation failed.\n$response" return 1 fi } ############################################################################### # function copy_file_to_bucket # # This function creates a file in the specified bucket. # # Parameters: # $1 - The name of the bucket to copy the file to. # $2 - The path and file name of the local file to copy to the bucket. # $3 - The key (name) to call the copy of the file in the bucket. # # Returns: # 0 - If successful. # 1 - If it fails. ############################################################################### function copy_file_to_bucket() { local response bucket_name source_file destination_file_name bucket_name=$1 source_file=$2 destination_file_name=$3 response=$(aws s3api put-object \ --bucket "$bucket_name" \ --body "$source_file" \ --key "$destination_file_name") # shellcheck disable=SC2181 if [[ ${?} -ne 0 ]]; then errecho "ERROR: AWS reports put-object operation failed.\n$response" return 1 fi } ############################################################################### # function download_object_from_bucket # # This function downloads an object in a bucket to a file. # # Parameters: # $1 - The name of the bucket to download the object from. # $2 - The path and file name to store the downloaded bucket. # $3 - The key (name) of the object in the bucket. # # Returns: # 0 - If successful. # 1 - If it fails. ############################################################################### function download_object_from_bucket() { local bucket_name=$1 local destination_file_name=$2 local object_name=$3 local response response=$(aws s3api get-object \ --bucket "$bucket_name" \ --key "$object_name" \ "$destination_file_name") # shellcheck disable=SC2181 if [[ ${?} -ne 0 ]]; then errecho "ERROR: AWS reports put-object operation failed.\n$response" return 1 fi } ############################################################################### # function copy_item_in_bucket # # This function creates a copy of the specified file in the same bucket. # # Parameters: # $1 - The name of the bucket to copy the file from and to. # $2 - The key of the source file to copy. # $3 - The key of the destination file. # # Returns: # 0 - If successful. # 1 - If it fails. ############################################################################### function copy_item_in_bucket() { local bucket_name=$1 local source_key=$2 local destination_key=$3 local response response=$(aws s3api copy-object \ --bucket "$bucket_name" \ --copy-source "$bucket_name/$source_key" \ --key "$destination_key") # shellcheck disable=SC2181 if [[ $? -ne 0 ]]; then errecho "ERROR: AWS reports s3api copy-object operation failed.\n$response" return 1 fi } ############################################################################### # function list_items_in_bucket # # This function displays a list of the files in the bucket with each file's # size. The function uses the --query parameter to retrieve only the key and # size fields from the Contents collection. # # Parameters: # $1 - The name of the bucket. # # Returns: # The list of files in text format. # And: # 0 - If successful. # 1 - If it fails. ############################################################################### function list_items_in_bucket() { local bucket_name=$1 local response response=$(aws s3api list-objects \ --bucket "$bucket_name" \ --output text \ --query 'Contents[].{Key: Key, Size: Size}') # shellcheck disable=SC2181 if [[ ${?} -eq 0 ]]; then echo "$response" else errecho "ERROR: AWS reports s3api list-objects operation failed.\n$response" return 1 fi } ############################################################################### # function delete_items_in_bucket # # This function deletes the specified list of keys from the specified bucket. # # Parameters: # $1 - The name of the bucket. # $2 - A list of keys in the bucket to delete. # Returns: # 0 - If successful. # 1 - If it fails. ############################################################################### function delete_items_in_bucket() { local bucket_name=$1 local keys=$2 local response # Create the JSON for the items to delete. local delete_items delete_items="{\"Objects\":[" for key in $keys; do delete_items="$delete_items{\"Key\": \"$key\"}," done delete_items=${delete_items%?} # Remove the final comma. delete_items="$delete_items]}" response=$(aws s3api delete-objects \ --bucket "$bucket_name" \ --delete "$delete_items") # shellcheck disable=SC2181 if [[ $? -ne 0 ]]; then errecho "ERROR: AWS reports s3api delete-object operation failed.\n$response" return 1 fi } ############################################################################### # function delete_bucket # # This function deletes the specified bucket. # # Parameters: # $1 - The name of the bucket. # Returns: # 0 - If successful. # 1 - If it fails. ############################################################################### function delete_bucket() { local bucket_name=$1 local response response=$(aws s3api delete-bucket \ --bucket "$bucket_name") # shellcheck disable=SC2181 if [[ $? -ne 0 ]]; then errecho "ERROR: AWS reports s3api delete-bucket failed.\n$response" return 1 fi }
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Untuk API detailnya, lihat topik berikut di Referensi AWS CLI Perintah.
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Tindakan
Contoh kode berikut menunjukkan cara menggunakanCopyObject
.
- AWS CLI dengan skrip Bash
-
catatan
Ada lebih banyak tentang GitHub. Temukan contoh lengkapnya dan pelajari cara pengaturan dan menjalankannya di Repositori Contoh Kode AWS
. ############################################################################### # function errecho # # This function outputs everything sent to it to STDERR (standard error output). ############################################################################### function errecho() { printf "%s\n" "$*" 1>&2 } ############################################################################### # function copy_item_in_bucket # # This function creates a copy of the specified file in the same bucket. # # Parameters: # $1 - The name of the bucket to copy the file from and to. # $2 - The key of the source file to copy. # $3 - The key of the destination file. # # Returns: # 0 - If successful. # 1 - If it fails. ############################################################################### function copy_item_in_bucket() { local bucket_name=$1 local source_key=$2 local destination_key=$3 local response response=$(aws s3api copy-object \ --bucket "$bucket_name" \ --copy-source "$bucket_name/$source_key" \ --key "$destination_key") # shellcheck disable=SC2181 if [[ $? -ne 0 ]]; then errecho "ERROR: AWS reports s3api copy-object operation failed.\n$response" return 1 fi }
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Untuk API detailnya, lihat CopyObjectdi Referensi AWS CLI Perintah.
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Contoh kode berikut menunjukkan cara menggunakanCreateBucket
.
- AWS CLI dengan skrip Bash
-
catatan
Ada lebih banyak tentang GitHub. Temukan contoh lengkapnya dan pelajari cara pengaturan dan menjalankannya di Repositori Contoh Kode AWS
. ############################################################################### # function iecho # # This function enables the script to display the specified text only if # the global variable $VERBOSE is set to true. ############################################################################### function iecho() { if [[ $VERBOSE == true ]]; then echo "$@" fi } ############################################################################### # function errecho # # This function outputs everything sent to it to STDERR (standard error output). ############################################################################### function errecho() { printf "%s\n" "$*" 1>&2 } ############################################################################### # function create-bucket # # This function creates the specified bucket in the specified AWS Region, unless # it already exists. # # Parameters: # -b bucket_name -- The name of the bucket to create. # -r region_code -- The code for an AWS Region in which to # create the bucket. # # Returns: # The URL of the bucket that was created. # And: # 0 - If successful. # 1 - If it fails. ############################################################################### function create_bucket() { local bucket_name region_code response local option OPTARG # Required to use getopts command in a function. # bashsupport disable=BP5008 function usage() { echo "function create_bucket" echo "Creates an Amazon S3 bucket. You must supply a bucket name:" echo " -b bucket_name The name of the bucket. It must be globally unique." echo " [-r region_code] The code for an AWS Region in which the bucket is created." echo "" } # Retrieve the calling parameters. while getopts "b:r:h" option; do case "${option}" in b) bucket_name="${OPTARG}" ;; r) region_code="${OPTARG}" ;; h) usage return 0 ;; \?) echo "Invalid parameter" usage return 1 ;; esac done if [[ -z "$bucket_name" ]]; then errecho "ERROR: You must provide a bucket name with the -b parameter." usage return 1 fi local bucket_config_arg # A location constraint for "us-east-1" returns an error. if [[ -n "$region_code" ]] && [[ "$region_code" != "us-east-1" ]]; then bucket_config_arg="--create-bucket-configuration LocationConstraint=$region_code" fi iecho "Parameters:\n" iecho " Bucket name: $bucket_name" iecho " Region code: $region_code" iecho "" # If the bucket already exists, we don't want to try to create it. if (bucket_exists "$bucket_name"); then errecho "ERROR: A bucket with that name already exists. Try again." return 1 fi # shellcheck disable=SC2086 response=$(aws s3api create-bucket \ --bucket "$bucket_name" \ $bucket_config_arg) # shellcheck disable=SC2181 if [[ ${?} -ne 0 ]]; then errecho "ERROR: AWS reports create-bucket operation failed.\n$response" return 1 fi }
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Untuk API detailnya, lihat CreateBucketdi Referensi AWS CLI Perintah.
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Contoh kode berikut menunjukkan cara menggunakanDeleteBucket
.
- AWS CLI dengan skrip Bash
-
catatan
Ada lebih banyak tentang GitHub. Temukan contoh lengkapnya dan pelajari cara pengaturan dan menjalankannya di Repositori Contoh Kode AWS
. ############################################################################### # function errecho # # This function outputs everything sent to it to STDERR (standard error output). ############################################################################### function errecho() { printf "%s\n" "$*" 1>&2 } ############################################################################### # function delete_bucket # # This function deletes the specified bucket. # # Parameters: # $1 - The name of the bucket. # Returns: # 0 - If successful. # 1 - If it fails. ############################################################################### function delete_bucket() { local bucket_name=$1 local response response=$(aws s3api delete-bucket \ --bucket "$bucket_name") # shellcheck disable=SC2181 if [[ $? -ne 0 ]]; then errecho "ERROR: AWS reports s3api delete-bucket failed.\n$response" return 1 fi }
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Untuk API detailnya, lihat DeleteBucketdi Referensi AWS CLI Perintah.
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Contoh kode berikut menunjukkan cara menggunakanDeleteObject
.
- AWS CLI dengan skrip Bash
-
catatan
Ada lebih banyak tentang GitHub. Temukan contoh lengkapnya dan pelajari cara pengaturan dan menjalankannya di Repositori Contoh Kode AWS
. ############################################################################### # function errecho # # This function outputs everything sent to it to STDERR (standard error output). ############################################################################### function errecho() { printf "%s\n" "$*" 1>&2 } ############################################################################### # function delete_item_in_bucket # # This function deletes the specified file from the specified bucket. # # Parameters: # $1 - The name of the bucket. # $2 - The key (file name) in the bucket to delete. # Returns: # 0 - If successful. # 1 - If it fails. ############################################################################### function delete_item_in_bucket() { local bucket_name=$1 local key=$2 local response response=$(aws s3api delete-object \ --bucket "$bucket_name" \ --key "$key") # shellcheck disable=SC2181 if [[ $? -ne 0 ]]; then errecho "ERROR: AWS reports s3api delete-object operation failed.\n$response" return 1 fi }
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Untuk API detailnya, lihat DeleteObjectdi Referensi AWS CLI Perintah.
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Contoh kode berikut menunjukkan cara menggunakanDeleteObjects
.
- AWS CLI dengan skrip Bash
-
catatan
Ada lebih banyak tentang GitHub. Temukan contoh lengkapnya dan pelajari cara pengaturan dan menjalankannya di Repositori Contoh Kode AWS
. ############################################################################### # function errecho # # This function outputs everything sent to it to STDERR (standard error output). ############################################################################### function errecho() { printf "%s\n" "$*" 1>&2 } ############################################################################### # function delete_items_in_bucket # # This function deletes the specified list of keys from the specified bucket. # # Parameters: # $1 - The name of the bucket. # $2 - A list of keys in the bucket to delete. # Returns: # 0 - If successful. # 1 - If it fails. ############################################################################### function delete_items_in_bucket() { local bucket_name=$1 local keys=$2 local response # Create the JSON for the items to delete. local delete_items delete_items="{\"Objects\":[" for key in $keys; do delete_items="$delete_items{\"Key\": \"$key\"}," done delete_items=${delete_items%?} # Remove the final comma. delete_items="$delete_items]}" response=$(aws s3api delete-objects \ --bucket "$bucket_name" \ --delete "$delete_items") # shellcheck disable=SC2181 if [[ $? -ne 0 ]]; then errecho "ERROR: AWS reports s3api delete-object operation failed.\n$response" return 1 fi }
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Untuk API detailnya, lihat DeleteObjectsdi Referensi AWS CLI Perintah.
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Contoh kode berikut menunjukkan cara menggunakanGetObject
.
- AWS CLI dengan skrip Bash
-
catatan
Ada lebih banyak tentang GitHub. Temukan contoh lengkapnya dan pelajari cara pengaturan dan menjalankannya di Repositori Contoh Kode AWS
. ############################################################################### # function errecho # # This function outputs everything sent to it to STDERR (standard error output). ############################################################################### function errecho() { printf "%s\n" "$*" 1>&2 } ############################################################################### # function download_object_from_bucket # # This function downloads an object in a bucket to a file. # # Parameters: # $1 - The name of the bucket to download the object from. # $2 - The path and file name to store the downloaded bucket. # $3 - The key (name) of the object in the bucket. # # Returns: # 0 - If successful. # 1 - If it fails. ############################################################################### function download_object_from_bucket() { local bucket_name=$1 local destination_file_name=$2 local object_name=$3 local response response=$(aws s3api get-object \ --bucket "$bucket_name" \ --key "$object_name" \ "$destination_file_name") # shellcheck disable=SC2181 if [[ ${?} -ne 0 ]]; then errecho "ERROR: AWS reports put-object operation failed.\n$response" return 1 fi }
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Untuk API detailnya, lihat GetObjectdi Referensi AWS CLI Perintah.
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Contoh kode berikut menunjukkan cara menggunakanHeadBucket
.
- AWS CLI dengan skrip Bash
-
catatan
Ada lebih banyak tentang GitHub. Temukan contoh lengkapnya dan pelajari cara pengaturan dan menjalankannya di Repositori Contoh Kode AWS
. ############################################################################### # function bucket_exists # # This function checks to see if the specified bucket already exists. # # Parameters: # $1 - The name of the bucket to check. # # Returns: # 0 - If the bucket already exists. # 1 - If the bucket doesn't exist. ############################################################################### function bucket_exists() { local bucket_name bucket_name=$1 # Check whether the bucket already exists. # We suppress all output - we're interested only in the return code. if aws s3api head-bucket \ --bucket "$bucket_name" \ >/dev/null 2>&1; then return 0 # 0 in Bash script means true. else return 1 # 1 in Bash script means false. fi }
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Untuk API detailnya, lihat HeadBucketdi Referensi AWS CLI Perintah.
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Contoh kode berikut menunjukkan cara menggunakanListObjectsV2
.
- AWS CLI dengan skrip Bash
-
catatan
Ada lebih banyak tentang GitHub. Temukan contoh lengkapnya dan pelajari cara pengaturan dan menjalankannya di Repositori Contoh Kode AWS
. ############################################################################### # function errecho # # This function outputs everything sent to it to STDERR (standard error output). ############################################################################### function errecho() { printf "%s\n" "$*" 1>&2 } ############################################################################### # function list_items_in_bucket # # This function displays a list of the files in the bucket with each file's # size. The function uses the --query parameter to retrieve only the key and # size fields from the Contents collection. # # Parameters: # $1 - The name of the bucket. # # Returns: # The list of files in text format. # And: # 0 - If successful. # 1 - If it fails. ############################################################################### function list_items_in_bucket() { local bucket_name=$1 local response response=$(aws s3api list-objects \ --bucket "$bucket_name" \ --output text \ --query 'Contents[].{Key: Key, Size: Size}') # shellcheck disable=SC2181 if [[ ${?} -eq 0 ]]; then echo "$response" else errecho "ERROR: AWS reports s3api list-objects operation failed.\n$response" return 1 fi }
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Untuk API detailnya, lihat ListObjectsV2 di Referensi AWS CLI Perintah.
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Contoh kode berikut menunjukkan cara menggunakanPutObject
.
- AWS CLI dengan skrip Bash
-
catatan
Ada lebih banyak tentang GitHub. Temukan contoh lengkapnya dan pelajari cara pengaturan dan menjalankannya di Repositori Contoh Kode AWS
. ############################################################################### # function errecho # # This function outputs everything sent to it to STDERR (standard error output). ############################################################################### function errecho() { printf "%s\n" "$*" 1>&2 } ############################################################################### # function copy_file_to_bucket # # This function creates a file in the specified bucket. # # Parameters: # $1 - The name of the bucket to copy the file to. # $2 - The path and file name of the local file to copy to the bucket. # $3 - The key (name) to call the copy of the file in the bucket. # # Returns: # 0 - If successful. # 1 - If it fails. ############################################################################### function copy_file_to_bucket() { local response bucket_name source_file destination_file_name bucket_name=$1 source_file=$2 destination_file_name=$3 response=$(aws s3api put-object \ --bucket "$bucket_name" \ --body "$source_file" \ --key "$destination_file_name") # shellcheck disable=SC2181 if [[ ${?} -ne 0 ]]; then errecho "ERROR: AWS reports put-object operation failed.\n$response" return 1 fi }
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Untuk API detailnya, lihat PutObjectdi Referensi AWS CLI Perintah.
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