model-registry 0.2.16

Client for Kubeflow Model Registry

Model Registry Python Client

This library provides a high level interface for interacting with a model registry server.

Alpha

This Kubeflow component has alpha status with limited support. See the Kubeflow versioning policies. The Kubeflow team is interested in your feedback about the usability of the feature.

Installation

In your Python environment, you can install the latest version of the Model Registry Python client with:

pip install --pre model-registry

Installing extras

Some capabilities of this Model Registry Python client, such as importing model from Hugging Face, require additional dependencies.

By installing an extra variant of this package the additional dependencies will be managed for you automatically, for instance with:

pip install --pre "model-registry[hf]"

This step is not required if you already installed the additional dependencies already, for instance with:

pip install huggingface-hub

Extras that can be installed

pip install model-registry[hf]

pip install model-registry[s3]

pip install model_registry[olot]

Basic usage

Connecting to MR

You can connect to a secure Model Registry using the default constructor (recommended):

from model_registry import ModelRegistry

registry = ModelRegistry("https://server-address", author="Ada Lovelace")  # Defaults to a secure connection via port 443

Or you can set the is_secure flag to False to connect without TLS (not recommended):

registry = ModelRegistry("http://server-address", 8080, author="Ada Lovelace", is_secure=False)  # insecure port set to 8080

Registering models

To register your first model, you can use the register_model method:

model = registry.register_model(
    "my-model",  # model name
    "https://storage-place.my-company.com",  # model URI
    version="2.0.0",
    description="lorem ipsum",
    model_format_name="onnx",
    model_format_version="1",
    storage_key="my-data-connection",
    storage_path="path/to/model",
    metadata={
        # can be one of the following types
        "int_key": 1,
        "bool_key": False,
        "float_key": 3.14,
        "str_key": "str_value",
    }
)

model = registry.get_registered_model("my-model")
print(model)

version = registry.get_model_version("my-model", "2.0.0")
print(version)

experiment = registry.get_model_artifact("my-model", "2.0.0")
print(experiment)

You can also update your models:

# change is not reflected on pushed model version
version.description = "Updated model version"

# you can update it using
registry.update(version)

Importing from S3

When registering models stored on S3-compatible object storage, you should use utils.s3_uri_from to build an unambiguous URI for your artifact.

from model_registry import utils

model = registry.register_model(
    "my-model",  # model name
    uri=utils.s3_uri_from("path/to/model", "my-bucket"),
    version="2.0.0",
    description="lorem ipsum",
    model_format_name="onnx",
    model_format_version="1",
    storage_key="my-data-connection",
    metadata={
        # can be one of the following types
        "int_key": 1,
        "bool_key": False,
        "float_key": 3.14,
        "str_key": "str_value",
    }
)

Importing from Hugging Face Hub

To import models from Hugging Face Hub, start by installing the huggingface-hub package, either directly or as an extra (available as model-registry[hf]). Reference section "installing extras" above for more information.

Models can be imported with

hf_model = registry.register_hf_model(
    "hf-namespace/hf-model",  # HF repo
    "relative/path/to/model/file.onnx",
    version="1.2.3",
    model_name="my-model",
    description="lorem ipsum",
    model_format_name="onnx",
    model_format_version="1",
)

There are caveats to be noted when using this method:

• It's only possible to import a single model file per Hugging Face Hub repo right now.

Listing models

To list models you can use

for model in registry.get_registered_models():
    ... # your logic using `model` loop variable here

# and versions associated with a model
for version in registry.get_model_versions("my-model"):
    ... # your logic using `version` loop variable here

Advanced usage note: You can also set the page_size() that you want the Pager to use when invoking the Model Registry backend. When using it as an iterator, it will automatically manage pages for you.

Uploading local models to external storage and registering them

To both upload and register a model, use the convenience method upload_artifact_and_register_model.

This method supports both s3-based storage (via boto3) as well as OCI-based image registries (via olot, using either of the CLI tools skopeo or oras)

In order to utilize this method you must instantiate an upload_params object which contains the necessary locations and credentials needed to perform the upload to that storage provider.

S3 based external storage

Common S3 env vars will be automatically read, such ass the access_key_id, etc. It can also be provided explicitly in the S3Params object if desired.

s3_upload_params = S3Params(
    bucket="my-bucket",
    s3_prefix="models/my_fraud_model",
)

registered_model = client.upload_artifact_and_register_model(
    name="hello_world_model",
    model_fiels_path="/home/user-01/models/model_training_01"
    # If the model consists of a single file, such as a .onnx file, you can specify that as well
    # model_fiels_path="/home/user-01/models/model_training_01.onnx"
    author="Mr. Trainer",
    version="0.0.1",
    upload_params=s3_upload_params
)

OCI-registry based storage

First, you must ensure you are logged in the to appropriate OCI registry using skopeo login, podman login, or using another way of authenticating or subsequent lines below will fail.

oci_upload_params = OCIParams(
    base_image="busybox",
    oci_ref="registry.example.com/acme_org/hello_world_model:0.0.1"
)

registered_model = client.upload_artifact_and_register_model(
    name="hello_world_model",
    model_fiels_path="/home/user-01/models/model_training_01"
    # If the model consists of a single file, such as a .onnx file, you can specify that as well
    # model_fiels_path="/home/user-01/models/model_training_01.onnx"
    author="Mr. Trainer",
    version="0.0.1",
    upload_params=oci_upload_params
)

Additionally, OCI-based storage supports multiple CLI clients to perform the upload. However, one of these clients must be available in the hosts $PATH. Ensure your host has either skopeo or oras installed and available.

By default, skopeo is used to perform the OCI image download/upload.

If you prefer to use oras instead, you can specify it like so:

oci_upload_params = OCIParams(
    base_image="busybox",
    oci_ref="registry.example.com/acme_org/hello_world_model:0.0.1",
    backend="oras"
)

Additionally, if neither of these CLI clients are sufficient for you, you can provide a custom_oci_backend in the OCIParams and specify the appropriate methods

def is_available():
    pass
def pull():
    pass
def push():
    pass

custom_oci_backend = {
    "is_available": is_available,
    "pull": pull,
    "push": push,
}

oci_upload_params = OCIParams(
    base_image="busybox",
    oci_ref="registry.example.com/acme_org/hello_world_model:0.0.1",
    custom_oci_backend=custom_oci_backend,
)

Implementation notes

The pager will manage pages for you in order to prevent infinite looping. Currently, the Model Registry backend treats model lists as a circular buffer, and will not end iteration for you.

Running ModelRegistry on Ray or Uvloop

When running ModelRegistry on a platform that sets a custom event loop that cannot be nested, an error will occur.

To solve this, you can specify a custom async_runner when initializing the client, one that is compatible with your environment.

async_runner is a function or a method that takes in a coroutine.

Example of an async runner compatible with Ray or Uvloop can be found here in tests/extras.

Example usage:

atr = AsyncTaskRunner()
registry = ModelRegistry("http://server-address", 8080, author="Ada Lovelace", async_runner=atr.run)

See also the test case in test_custom_async_runner_with_ray.

Please keep in mind, the AsyncTaskRunner used here for testing does not ship within the library so you will need to copy it into your code directly or import from elsewhere.

Development

Using the Makefile

The Makefile contains most common development tasks

To install dependencies:

make

Then you can run tests:

make test test-e2e

Using Nox

Common tasks, such as building documentation and running tests, can be executed using nox sessions.

Use nox -l to list sessions and execute them using nox -s [session].

Testing requirements

To run the e2e tests you will need kind to be installed. This is necessary as the e2e test suite will manage a Model Registry deployment and an MLMD deployment to ensure a clean MR target on each run.

Running Locally on Mac M1 or M2 (arm64 architecture)

Check out our recommendations on setting up your docker engine on an ARM processor.