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StorageMode

rhei_datafusion::storage

Enum StorageMode 

Source 
pub enum StorageMode {
    InMemory,
    Vortex {
        url: String,
    },
}
Expand description

Storage mode for the DataFusion OLAP engine.

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InMemory

In-memory storage (default). Data is lost on shutdown.

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Vortex

Vortex columnar file storage — local filesystem or S3-compatible.

The URL scheme determines the backend:

  • Local (file://..., /abs/path, ./rel/path, or schemeless): data is written as .vortex files under <resolved_base>/<table>/. Survives restarts.

  • S3-compatible (s3://bucket/prefix, requires cloud-storage feature): data is written as .vortex objects under <url>/<table>/. Credentials are resolved from environment variables (AWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY, AWS_REGION, etc.) following object_store conventions. S3-compatible services (MinIO, Cloudflare R2, Wasabi, Ceph RGW) work via AWS_ENDPOINT_URL.

Any other scheme (e.g. gs://) is rejected at construction time with a clear error.

Fields

§url: String

Filesystem path or object-store URL for the base storage location.

Implementations§

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impl StorageMode

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pub fn is_cloud(&self) -> bool

Returns true if this mode uses S3-compatible cloud object storage.

Always false when the cloud-storage feature is not enabled.

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pub fn classify(&self) -> Result<Option<VortexLocation>, String>

Classify the Vortex URL and return a VortexLocation.

Returns None for StorageMode::InMemory.

§Errors

Returns Err if the URL scheme is unsupported (e.g. gs://).

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pub fn local_base_path(&self) -> Option<PathBuf>

Returns the local base path for local Vortex storage, or None for in-memory and cloud modes.

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pub fn file_extension(&self) -> &'static str

Returns the file extension for data files in this storage mode.

  • InMemory: "" (no files written)
  • Vortex: "vortex"

Trait Implementations§

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impl Clone for StorageMode

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fn clone(&self) -> StorageMode

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for StorageMode

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Default for StorageMode

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fn default() -> StorageMode

Returns the “default value” for a type. Read more

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