Artifact operations

listartifacts(instance::MLFlow, run_id::String; path::String="", page_token::String="")
listartifacts(instance::MLFlow, run::Run; path::String="", page_token::String="")

List artifacts for a Run.

Arguments

• instance: MLFlow configuration.
• run_id: ID of the Run whose artifacts to list.
• path: Filter artifacts matching this path (a relative path from the root artifact directory).
• page_token: Token indicating the page of artifact results to fetch

Returns

• Root artifact directory for the Run.
• List of file location and metadata for artifacts.
• Token that can be used to retrieve the next page of artifact results.

listartifactsdirect(instance::MLFlow; path::String="")

List artifacts directly from the MLflow artifact repository (not associated with a run).

Arguments

• instance: MLFlow configuration.
• path: Filter artifacts matching this path (a relative path from the root artifact directory).

Returns

List of file location and metadata for artifacts.

downloadartifact(instance::MLFlow, artifact_path::String)

Download an artifact from the MLflow artifact repository.

Arguments

• instance: MLFlow configuration.
• artifact_path: Path of the artifact to download.

Returns

Artifact binary data as a byte array.

uploadartifact(instance::MLFlow, artifact_path::String, data::Vector{UInt8})

Upload an artifact to the MLflow artifact repository.

Arguments

• instance: MLFlow configuration.
• artifact_path: Path where the artifact should be stored.
• data: Artifact binary data.

Returns

true if successful. Otherwise, raises exception.

deleteartifact(instance::MLFlow, artifact_path::String)

Delete an artifact from the MLflow artifact repository.

Arguments

• instance: MLFlow configuration.
• artifact_path: Path of the artifact to delete.

Returns

true if successful. Otherwise, raises exception.

createmultipartupload(instance::MLFlow, artifact_path::String, num_parts::Int64)

Create a multipart upload for an artifact.

Arguments

• instance: MLFlow configuration.
• artifact_path: Path where the artifact should be stored.
• num_parts: Number of parts for the multipart upload.

Returns

• upload_id: Upload ID for the multipart upload.
• credentials: Array of credentials for each part.

completemultipartupload(instance::MLFlow, artifact_path::String, upload_id::String,
    parts::Array{MultipartUploadPart})

Complete a multipart upload.

Arguments

• instance: MLFlow configuration.
• artifact_path: Path of the artifact.
• upload_id: Upload ID for the multipart upload.
• parts: Array of uploaded parts with their part numbers and ETags.

Returns

true if successful. Otherwise, raises exception.

abortmultipartupload(instance::MLFlow, artifact_path::String, upload_id::String)

Abort a multipart upload.

Arguments

• instance: MLFlow configuration.
• artifact_path: Path of the artifact.
• upload_id: Upload ID for the multipart upload.

Returns

true if successful. Otherwise, raises exception.

getpresigneddownloadurl(instance::MLFlow, artifact_path::String)

Get a presigned URL for downloading an artifact.

Arguments

• instance: MLFlow configuration.
• artifact_path: Path of the artifact.

Returns

• url: The presigned URL for downloading the artifact.
• headers: Optional headers that must be included in the download request.
• file_size: Optional size of the file in bytes.

createpresigneduploadurl(instance::MLFlow, run_id::String, path::String;
    expiration::Union{Int64,Missing}=missing)

Generate a presigned URL for uploading an artifact directly to cloud storage. The server signs the URL with its own credentials, so clients can upload artifacts without direct cloud storage write permissions.

Arguments

• instance: MLFlow configuration.
• run_id: ID of the Run that owns the artifact.
• path: Relative path within the run's artifact directory (e.g. "models/model.pkl").
• expiration: Optional URL expiration time in seconds (the server defaults to 900).

Returns

• presigned_url: The presigned URL for direct artifact upload.
• headers: Required headers for the upload request (e.g. Content-Type).