Dala.Storage.Blob (dala v0.5.0)

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Binary data handling via blob references.

Blobs are stored in native memory and referenced by an opaque handle.

Examples

# Create a blob from binary data
blob_ref = Dala.Storage.Blob.create(<<1, 2, 3>>, "application/octet-stream")

# Slice a blob
sliced = Dala.Blob.slice(blob_ref, 0, 2)

# Convert to base64
base64 = Dala.Blob.to_base64(blob_ref)

# Save to file
{:ok, path} = Dala.Blob.to_file(blob_ref, "/tmp/blob.bin")

Summary

Functions

create(data, type \\ "application/octet-stream")

Create a blob from binary data.

slice(blob_ref, start_pos, end_pos)

Slice a blob from start_pos to end_pos. Returns a new blob reference.

to_base64(blob_ref)

Convert a blob to a base64-encoded string. Returns nil if the blob is invalid.

to_file(blob_ref, path)

Save blob contents to a file at the given path.

Functions

create(data, type \\ "application/octet-stream")

@spec create(binary(), String.t()) :: term()

Create a blob from binary data.

type is the MIME type (default: "application/octet-stream"). Returns an opaque blob reference.

slice(blob_ref, start_pos, end_pos)

@spec slice(term(), non_neg_integer(), non_neg_integer()) :: term()

Slice a blob from start_pos to end_pos. Returns a new blob reference.

to_base64(blob_ref)

@spec to_base64(term()) :: String.t() | nil

Convert a blob to a base64-encoded string. Returns nil if the blob is invalid.

to_file(blob_ref, path)

@spec to_file(term(), String.t()) :: {:ok, String.t()} | {:error, atom()}

Save blob contents to a file at the given path.