python oci: Oracle Cloud Infrastructure: How to list files in a bucket

Question

I am trying to print the files in a bucket on Oracle cloud. I have installed oci library for it and came this far. Now I dont know further how to get list of files in a particular bucket.

import os,oci
from oci.config import validate_config

tenancyId="sdkfh" # Your tenancies OCID.
authUserId="sdjfs"; # The OCID of the user ID being used.
OCI_KEY_PATH="filename"; # Path of the key file.
keyFingerprint="12:13:14:15"; # The fingerprint of the key file being used

config = {
    "user": authUserId,
    "key_file": OCI_KEY_PATH,
    "fingerprint": keyFingerprint,
    "tenancy": tenancyId,
    "region": "us-phoenix-1"
}

validate_config(config)

identity = oci.identity.IdentityClient(config)
user = identity.get_user(config["user"]).data
print(user)

Asked By: Rishi Bansal

||

Source

Answer 1

To list the objects inside the bucket.

import os,oci
from oci.config import validate_config

tenancyId="sdkfh" # Your tenancies OCID.
authUserId="sdjfs"; # The OCID of the user ID being used.
OCI_KEY_PATH="filename"; # Path of the key file.
keyFingerprint="12:13:14:15"; # The fingerprint of the key file being used
namespace = "xyz"
bucket_name = "abc"
config = {
    "user": authUserId,
    "key_file": OCI_KEY_PATH,
    "fingerprint": keyFingerprint,
    "tenancy": tenancyId,
    "region": "us-phoenix-1"
}
#it validates the above fields for connection
validate_config(config)
# prefix and fields are optional paramater.
#prefix is for filename pattern but not a regex
#fields valid values - md5,name,timeCreated,size
object_storage_client = oci.object_storage.ObjectStorageClient(config)
object_list = object_storage_client.list_objects(namespace, bucket_name, prefix = filename , fields="name,timeCreated,size")
for o in object_list.data.objects:
    print(o.name)

Output:
List of files inside the bucket with given fields

Suppose you want those files which are starting like filename*, than give prefix as filename. As it is not a regex so * and other things will not work. Here, i am not able to get time last modified and various other fields. If someone knows about it please let me know here.
Python SDK for Oracle Cloud Infrastructure Github Link to source.

Answered By: Rishi Bansal

Answer 2

I see the question has already been answered, but there is a more elegant way to manage the credentials here. I would demonstrate the same code using that.

OCI has a directory for user credentials of every user located at ~/.oci/config. This config file uses a syntax similar to INI files. A sample of the same looks like this:

[<profile-name>]
user=<user-ocid>
key_file=<private-key-path>
region=<region-name>
tenancy=<tenancy-ocid>
fingerprint=<public-key-fingerprint>

Now this profile can be used by the OCI CLI and the Python SDK. You can easily read the credentials using a simple function from the package.

from oci.config import from_file

config = from_file(profile_name=<profile-name>)

Now you can simply use this config object to perform any further operations.

Answered By: himan17

python oci: Oracle Cloud Infrastructure: How to list files in a bucket

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