jam.types.extrinsics.tickets module

class jam.types.extrinsics.tickets.TicketEnvelope(attempt: U8, signature: ByteArray784)[source]

Bases: Codable, JsonSerde

Ticket entry structure.

attempt: U8
signature: ByteArray784
__init__(attempt: U8, signature: ByteArray784) → None

Initialize the Codable.

Parameters:

  • codec – Optional codec to use for encoding/decoding

  • enc_sequence – Optional function that returns sequence of fields to encode

static decode_from(buffer: bytes | bytearray | memoryview, offset: int = 0) → Tuple[T, int]

Decode from buffer. Must be implemented by subclasses or added via decorator.

Parameters:

  • buffer – Buffer to decode from

  • offset – Starting position in buffer

Returns:

  • The decoded value

  • Number of bytes read

Return type:

Tuple containing

encode_into(buffer: bytearray, offset: int = 0) → int

Encode into provided buffer.

encode_size() → int

Calculate number of bytes needed to encode.

class jam.types.extrinsics.tickets.TicketBody(id: ByteArray32, attempt: U8)[source]

Bases: Codable, JsonSerde

Ticket body structure.

id: ByteArray32
attempt: U8
__init__(id: ByteArray32, attempt: U8) → None

Initialize the Codable.

Parameters:

  • codec – Optional codec to use for encoding/decoding

  • enc_sequence – Optional function that returns sequence of fields to encode

static decode_from(buffer: bytes | bytearray | memoryview, offset: int = 0) → Tuple[T, int]

Decode from buffer. Must be implemented by subclasses or added via decorator.

Parameters:

  • buffer – Buffer to decode from

  • offset – Starting position in buffer

Returns:

  • The decoded value

  • Number of bytes read

Return type:

Tuple containing

encode_into(buffer: bytearray, offset: int = 0) → int

Encode into provided buffer.

encode_size() → int

Calculate number of bytes needed to encode.

class jam.types.extrinsics.tickets.TicketsAccumulator(initial: Sequence[T] = [], codec: Codec[T] | None = None)[source]

Bases: Array[TicketBody]

static decode_from(buffer: bytes | bytearray | memoryview, offset: int = 0) → Tuple[Any, int]

Decode from buffer. Must be implemented by subclasses or added via decorator.

Parameters:

  • buffer – Buffer to decode from

  • offset – Starting position in buffer

Returns:

  • The decoded value

  • Number of bytes read

Return type:

Tuple containing

class jam.types.extrinsics.tickets.KeysAccumulator(initial: Sequence[T] = [], codec: Codec[T] | None = None)[source]

Bases: Array[ByteArray32]

static decode_from(buffer: bytes | bytearray | memoryview, offset: int = 0) → Tuple[Any, int]

Decode from buffer. Must be implemented by subclasses or added via decorator.

Parameters:

  • buffer – Buffer to decode from

  • offset – Starting position in buffer

Returns:

  • The decoded value

  • Number of bytes read

Return type:

Tuple containing

class jam.types.extrinsics.tickets.TicketsExtrinsic(initial: Sequence[T] = [], codec: Codec[T] | None = None)[source]

Bases: Vector[TicketEnvelope]

static decode_from(buffer: bytes | bytearray | memoryview, offset: int = 0) → Tuple[Vector[T], int]

Decode from buffer. Must be implemented by subclasses or added via decorator.

Parameters:

  • buffer – Buffer to decode from

  • offset – Starting position in buffer

Returns:

  • The decoded value

  • Number of bytes read

Return type:

Tuple containing