WriteBlobFlow class

Multi-step write blob flow for wallet integration.

This flow separates transaction building from signing, allowing external wallets (dApp Kit, WalletConnect) to handle signing.

Usage:

final flow = directClient.writeBlobFlow(blob: rawData);

// Step 1: Encode (compute metadata)
await flow.encode();

// Step 2: Get register transaction → sign externally
final registerTx = flow.register(WriteBlobFlowRegisterOptions(
  epochs: 3,
  owner: myAddress,
  deletable: true,
));
final registerResult = await wallet.signAndExecute(registerTx);

// Step 3: Upload to relay
await flow.upload(WriteBlobFlowUploadOptions(
  digest: registerResult.digest,
));

// Step 4: Get certify transaction → sign externally
final certifyTx = flow.certify();
await wallet.signAndExecute(certifyTx);

// Step 5: Get result
final result = await flow.getBlob();
print('Blob ID: ${result.blobId}');

Constructors

WriteBlobFlow({required Uint8List blob, required WalrusTransactionBuilder txBuilder, UploadRelayClient? relayClient, UploadRelayTipConfig? tipConfig, BlobEncoder? encoder, int? numShards, BlobMetadata? precomputedMetadata, CommitteeInfo? committee, dynamic directClient, SystemStateReader? stateReader, dynamic suiClient})

Properties

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

certify() → Transaction

Step 4: Build the certify transaction.

encode() → Future<void>

Step 1: Encode the blob and compute metadata.

getBlob() → Future<WriteBlobResult>

Step 5: Get the final blob result.

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

register(WriteBlobFlowRegisterOptions options) → Future<Transaction>

Step 2: Build the register transaction.

toString() → String

A string representation of this object.

inherited

upload(WriteBlobFlowUploadOptions options) → Future<void>

Step 3: Upload the blob data.

Operators

operator ==(Object other) → bool

The equality operator.

inherited