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0.3.0 Apr 3, 2022
0.2.12 Sep 28, 2021
0.2.11 Aug 21, 2021
0.2.10 Jul 16, 2021
0.2.0 Mar 21, 2021

#1488 in Database interfaces

29 downloads per month
Used in 3 crates

MIT license

175KB
4.5K SLoC

mlmd

mlmd Documentation Actions Status Coverage Status License: MIT

A Rust implementation of ml-metadata.

This crate supports the schema version 8 used in ml-metadata-v1.7.0 or later.

Examples

use mlmd::MetadataStore;
use mlmd::metadata::EventType;
use tempfile::NamedTempFile;

#[tokio::main]
async fn main() -> anyhow::Result<()> {
    // Creates metadata store.
    let db_file = NamedTempFile::new()?;
    let sqlite_uri = format!("sqlite://{}", db_file.path().to_str().unwrap());
    let mut store = MetadataStore::connect(&sqlite_uri).await?;

    // Creates an artifact.
    let artifact_type_id = store.put_artifact_type("DataSet").execute().await?;
    let artifact_id = store.post_artifact(artifact_type_id).uri("/foo/bar").execute().await?;

    // Creates an execution.
    let execution_type_id = store.put_execution_type("Training").execute().await?;
    let execution_id = store.post_execution(execution_type_id).execute().await?;

    // Links the above execution with the artifact.
    store.put_event(execution_id, artifact_id).ty(EventType::Input).execute().await?;

    // Gets executions.
    let executions = store.get_executions().execute().await?;
    assert_eq!(executions.len(), 1);
    assert_eq!(executions[0].id, execution_id);

    Ok(())
}

Limitations

The following features are not supported yet:

  • gRPC client
  • input_type and output_type fields of Execution

The following features are not planned to be supported:

  • gRPC server
  • Database schema migration

ml-metadata References

Dependencies

~32–48MB
~891K SLoC