Object Storage Swift - Curl Command Memo (EN)

Find here the main curl commands to manage your object containers

Last updated 2nd March 2023

Objective

In this guide, you can find the main curl commands for managing your object containers.

Requirements

Load the following environment variables:

export OS_AUTH_URL=https://auth.cloud.ovh.net/v3/
export OS_STORAGE_URL=https://storage.<region>.cloud.ovh.net/v1/AUTH_702xxxxxxxxxxxxxxxxxxxxxxxxxxdaf
export OS_USERNAME=user-xxxxxx
export OS_PASSWORD=xxx
export OS_TENANT_ID=702xxxxxxxxxxxxxxxxxxxxxxxxxxdaf
export OS_AUTH_TOKEN=$(curl -is -X POST ${OS_AUTH_URL}auth/tokens -H "Content-Type: application/json" -d ' { "auth": { "identity": { "methods": ["password"], "password": { "user": { "name": "'$OS_USERNAME'", "domain": { "id": "default" }, "password": "'$OS_PASSWORD'" } } }, "scope": { "project": { "id": "'$OS_TENANT_ID'", "domain": { "id": "default" } } } } }' | grep -i '^X-Subject-Token' | cut -d" " -f2 | tr -d "\r")

Instructions

Create a PCS container

curl -i "${OS_STORAGE_URL}/<container>" -X PUT -H "X-Auth-Token: ${OS_AUTH_TOKEN}"

View account information

curl -i "${OS_STORAGE_URL}" -X HEAD -H "X-Auth-Token: ${OS_AUTH_TOKEN}"

View container information

curl -i "${OS_STORAGE_URL}/<container>" -X HEAD -H "X-Auth-Token: ${OS_AUTH_TOKEN}"

View object information

curl -i "${OS_STORAGE_URL}/<container>/<object>" -X HEAD -H "X-Auth-Token: ${OS_AUTH_TOKEN}"

curl "${OS_STORAGE_URL}" -X GET -H "X-Auth-Token: ${OS_AUTH_TOKEN}"

List the contents of a container

curl "${OS_STORAGE_URL}/<container>" -X GET -H "X-Auth-Token: ${OS_AUTH_TOKEN}"

Upload an object smaller than 5GB

curl -i "${OS_STORAGE_URL}/<container>/<object>" -X PUT -H "X-Auth-Token: ${OS_AUTH_TOKEN}" -H "Content-Type: application/octet-stream" -d "@<object>"

Upload an object higher than 5GB in SLO mode

FILE=/datas/6gb.img
CONTAINER=pcs-test
OBJECT=6gb.img
CHUNK_SIZE=500M

# Create a temporary folder for chunks
TMPDIR="$(mktemp -d)"
cd "${TMPDIR}"

# Divide file into chunks
split -d -b "${CHUNK_SIZE}" "${FILE}" "$(basename $FILE)_"

# Create containers
curl -X PUT -H "X-Auth-Token: ${OS_AUTH_TOKEN}" "${OS_STORAGE_URL}/${CONTAINER}"
curl -X PUT -H "X-Auth-Token: ${OS_AUTH_TOKEN}" "${OS_STORAGE_URL}/${CONTAINER}_segments"

# Upload of chunks
for chunk in *; do
    curl -X PUT -H "X-Auth-Token: ${OS_AUTH_TOKEN}" -T "${chunk}" "${OS_STORAGE_URL}/${CONTAINER}_segments/${OBJECT}/${chunk}"
done

Create the manifest in json format based on the following attributes:

path (Required) eg: pcs-test_segments/6gb.img_01
etag (Optional) Segment MD5 Checksum. This value is available in the segment's Etag metadata via: curl -i -X HEAD "$OS_STORAGE_URL/<container>/<object>" -H "X-Auth-Token:$OS_AUTH_TOKEN"
size_bytes (Optional) Segment size. This value is available in the segment's Content-Length metadata via: curl -i -X HEAD "$OS_STORAGE_URL/<container>/<object>" -H "X-Auth-Token:$OS_AUTH_TOKEN"

Here is an example manifest:

[
  {
    "path":"pcs-test_segments/myLargeObject_00",
    "etag":"11a3e229084349bc25d97e29393ced1d",
    "size_bytes":"10485760"
  },
  {
    "path":"pcs-test_segments/myLargeObject_01",
    "etag":"6ccef1b25ea58fb8be3ca1a1a744ea53",
    "size_bytes":"10485760"
  },
  {
    "path":"pcs-test_segments/myLargeObject_02",
    "etag":"82c16692a7f9040f3a6eb6a6a3f3c141",
    "size_bytes":"10485760"
  }
  [...]
]

# Upload of manifest file
curl -X PUT -H "X-Auth-Token: ${OS_AUTH_TOKEN}" -T manifest.json "$OS_STORAGE_URL/$CONTAINER/$OBJECT?multipart-manifest=put"

# Cleanup
cd
rm -rf "${TMPDIR}"

Upload an object higher than 5GB in DLO mode

FILE=/datas/6gb.img
CONTAINER=pcs-test
OBJECT=6gb.img
CHUNK_SIZE=500M

# Create a temporary folder for chunks
TMPDIR="$(mktemp -d)"
cd "${TMPDIR}"

# Divide file into chunks
split -d -b "${CHUNK_SIZE}" "${FILE}" "$(basename $FILE)_"

# Create containers
curl -X PUT -H "X-Auth-Token: ${OS_AUTH_TOKEN}" "${OS_STORAGE_URL}/${CONTAINER}"
curl -X PUT -H "X-Auth-Token: ${OS_AUTH_TOKEN}" "${OS_STORAGE_URL}/${CONTAINER}_segments"

# Upload of chunks
for chunk in *; do
    curl -X PUT -H "X-Auth-Token: ${OS_AUTH_TOKEN}" -T "${chunk}" "${OS_STORAGE_URL}/${CONTAINER}_segments/${OBJECT}/${chunk}"
done

# Create manifest
curl -X PUT -H "X-Auth-Token: ${OS_AUTH_TOKEN}" -H "X-Object-Manifest: ${CONTAINER}_segments/${OBJECT}/" --data-binary "" "${OS_STORAGE_URL}/${CONTAINER}/${OBJECT}"

# Cleanup
cd
rm -rf "${TMPDIR}"

Download an object

curl "${OS_STORAGE_URL}/<container>/<object>" -X GET -H "X-Auth-Token: ${OS_AUTH_TOKEN}" -o <output_file>

Delete an empty container

curl "${OS_STORAGE_URL}/<container>" -X DELETE -H "X-Auth-Token: ${OS_AUTH_TOKEN}"

Delete a non-empty container with fewer than 10000 objects

If the container contains LargeObjects, the <container_segments> container must be manually deleted.

OBJECTS=$(curl -s "${OS_STORAGE_URL}/<container>" -X GET -H "X-Auth-Token: ${OS_AUTH_TOKEN}")
for obj in $OBJECTS
do
  curl "${OS_STORAGE_URL}/<container>/$obj" -X DELETE -H "X-Auth-Token: ${OS_AUTH_TOKEN}"
done
curl "${OS_STORAGE_URL}/<container>" -X DELETE -H "X-Auth-Token: ${OS_AUTH_TOKEN}"

Empty a container with more than 10,000 objects

If the container contains LargeObject, the <container_segments> container must be manually deleted.

#!/bin/bash

START_TIME=$(date '+%s')
RENEW_TOKEN_AFTER=72000 # = 20h
CONTAINER="pcs-test"
OS_STORAGE_URL="https://storage.${OS_REGION_NAME,,}.cloud.ovh.net/v1/AUTH_${OS_TENANT_ID}/${CONTAINER}"
unset OS_AUTH_TOKEN

get_token(){
  export OS_AUTH_TOKEN=$(curl -is -X POST ${OS_AUTH_URL}auth/tokens -H "Content-Type: application/json" -d ' { "auth": { "identity": { "methods": ["password"], "password": { "user": { "name": "'$OS_USERNAME'", "domain": { "id": "default" }, "password": "'$OS_PASSWORD'" } } }, "scope": { "project": { "id": "'$OS_TENANT_ID'", "domain": { "id": "default" } } } } }' | grep -i '^X-Subject-Token' | cut -d" " -f2 | tr -d "\r") && wait
}
delete_objects(){
  while : ;
  do
    CURRENT_TIME=$(date '+%s')
    if [ $(($CURRENT_TIME - $START_TIME)) -gt $RENEW_TOKEN_AFTER ]
    then
      get_token
    fi
    OBJECTS=$(curl -s "${OS_STORAGE_URL}" -X GET -H "X-Auth-Token:$OS_AUTH_TOKEN")
    if [[ ! -z $OBJECTS ]]
    then
      for obj in $OBJECTS
      do
        echo "DELETING OBJECT: $obj"
        curl -s "${OS_STORAGE_URL}/$obj" -X DELETE -H "X-Auth-Token:$OS_AUTH_TOKEN" && wait
      done
    else
      break
    fi
  done
}

if [[ -z $OS_AUTH_TOKEN ]]
then
  get_token
fi
while [ $(curl -is "${OS_STORAGE_URL}" -X HEAD -H "X-Auth-Token:$OS_AUTH_TOKEN" | awk -F ": " '/X-Container-Object-Count/ {print $2}' | tr -d "\r") -ne 0 ]
do
  delete_objects
done

Delete an object

curl "${OS_STORAGE_URL}/<container>/<object>" -X DELETE -H "X-Auth-Token: ${OS_AUTH_TOKEN}"

Delete an object larger than 5Gb

curl "${OS_STORAGE_URL}/<container>/<object>?multipart-manifest=delete" -X DELETE -H "X-Auth-Token: ${OS_AUTH_TOKEN}"

Without the ?multipart-manifest=delete argument, this will only delete the manifest file without the segments.

Add a metadata to a container

curl "${OS_STORAGE_URL}/<container>" -X POST -H "X-Auth-Token: ${OS_AUTH_TOKEN}" -H "X-Container-Meta-Access-Control-Allow-Origin:http://example.com"

Add metadata to an object

curl "${OS_STORAGE_URL}/<container>/<object>" -X POST -H "X-Auth-Token: ${OS_AUTH_TOKEN}" -H "X-Object-Meta-my-custom-key:value"

Delete a metadata from a container

curl "${OS_STORAGE_URL}/<container>" -X POST -H "X-Auth-Token: ${OS_AUTH_TOKEN}" -H "X-Remove-Container-Meta-Access-Control-Allow-Origin"

Delete a metadata from an object

curl "${OS_STORAGE_URL}/<container>/<object>" -X POST -H "X-Auth-Token: ${OS_AUTH_TOKEN}" -H "X-Remove-Object-My-Custom-Key"

Set Read ACL on a container

curl "${OS_STORAGE_URL}/<container>" -X POST -H "X-Auth-Token: ${OS_AUTH_TOKEN}" -H "X-Container-Read:${OS_TENANT_ID}:*"

Set write ACL on a container

curl "${OS_STORAGE_URL}/<container>" -X POST -H "X-Auth-Token: ${OS_AUTH_TOKEN}" -H "X-Container-Write:${OS_TENANT_ID}:*"

Delete the read ACL on a container

curl "${OS_STORAGE_URL}/<container>" -X POST -H "X-Auth-Token: ${OS_AUTH_TOKEN}" -H "X-Remove-Container-Read:x"

Delete write ACL on a container

curl "${OS_STORAGE_URL}/<container>" -X POST -H "X-Auth-Token: ${OS_AUTH_TOKEN}" -H "X-Remove-Container-Write:x"

Go further

Join our community of users on https://community.ovh.com/en/.

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