minos.saga.context

Classes

SagaContext

Saga Context class
class SagaContext[source]

Bases: BucketModel, MutableMapping

Saga Context class

The purpose of this class is to keep an execution state.

__init__(**kwargs)[source]

Class constructor.

Parameters

fields – Dictionary that contains the Field instances of the model indexed by name.

property avro_bytes: bytes

Generate bytes representation of the current instance.

Returns

A bytes object.

property avro_data: dict[str, Any]

Compute the avro data of the model.

Returns

A dictionary object.

avro_schema = [{'name': 'SagaContext', 'namespace': 'minos.saga.context.103b57dc-0cf4-4269-a7cd-1d54fb35e88f', 'type': 'record', 'fields': []}]
property avro_str: str

Generate bytes representation of the current instance.

Returns

A bytes object.

classname = 'minos.saga.context.SagaContext'
clear() → None.  Remove all items from D.
static decode_data(decoder, target, type_, **kwargs)

Decode data with the given decoder.

Parameters

  • decoder (DataDecoder) – The decoder instance.

  • target (Any) – The data to be decoded.

  • type – The data type.

  • kwargs – Additional named arguments.

  • type_ (ModelType) –

Returns

A decoded instance.

Return type

Any

static decode_schema(decoder, target, **kwargs)

Decode schema with the given encoder.

Parameters

  • decoder (SchemaDecoder) – The decoder instance.

  • target (Any) – The schema to be decoded.

  • kwargs – Additional named arguments.

Returns

The decoded schema as a type.

Return type

Any

classmethod empty()

Build an empty BucketModel instance.

Returns

A BucketModel instance.

Return type

T

static encode_data(encoder, target, **kwargs)

Encode data with the given encoder.

Parameters

  • encoder (DataEncoder) – The encoder instance.

  • target (Any) – An optional pre-encoded data.

  • kwargs – Additional named arguments.

Returns

The encoded data of the instance.

Return type

Any

static encode_schema(encoder, target, **kwargs)

Encode schema with the given encoder.

Parameters

  • encoder (SchemaEncoder) – The encoder instance.

  • target (Any) – An optional pre-encoded schema.

  • kwargs – Additional named arguments.

Returns

The encoded schema of the instance.

Return type

Any

property fields: dict[str, minos.common.model.fields.Field]

Fields getter

classmethod from_avro(schema, data)

Build a new instance from the avro schema and data.

Parameters

  • schema (Any) – The avro schema of the model.

  • data (Any) – The avro data of the model.

Returns

A new DynamicModel instance.

Return type

T

classmethod from_avro_bytes(raw, batch_mode=False, **kwargs)

Build a single instance or a sequence of instances from bytes.

Parameters

  • raw (bytes) – A bytes representation of the model.

  • batch_mode (bool) – If True the data is processed as a list of models, otherwise the data is processed as a single model.

  • kwargs – Additional named arguments.

Returns

A single instance or a sequence of instances.

Return type

Union[T, list[~T]]

classmethod from_avro_str(raw, **kwargs)

Build a single instance or a sequence of instances from bytes

Parameters

raw (str) – A str representation of the model.

Returns

A single instance or a sequence of instances.

Return type

Union[T, list[~T]]

classmethod from_model_type(model_type, *args, **kwargs)

Build a DynamicModel from a ModelType.

Parameters

  • model_type (ModelType) – ModelType object containing the model structure

  • args – Positional arguments to be passed to the model constructor.

  • kwargs – Named arguments to be passed to the model constructor.

Returns

A new DynamicModel instance.

Return type

T

classmethod from_typed_dict(typed_dict, *args, **kwargs)

Build a Model from a TypeDict and data.

Parameters

  • typed_dict (TypedDict) – TypeDict object containing the DTO’s structure

  • args – Positional arguments to be passed to the model constructor.

  • kwargs – Named arguments to be passed to the model constructor.

Returns

A new DataTransferObject instance.

Return type

T

get(k[, d]) → D[k] if k in D, else d.  d defaults to None.
items() → a set-like object providing a view on D's items
keys() → a set-like object providing a view on D's keys
model_type

alias of SagaContext

pop(k[, d]) → v, remove specified key and return the corresponding value.

If key is not found, d is returned if given, otherwise KeyError is raised.

popitem() → (k, v), remove and return some (key, value) pair

as a 2-tuple; but raise KeyError if D is empty.

setdefault(k[, d]) → D.get(k,d), also set D[k]=d if k not in D
classmethod to_avro_bytes(models)

Create a bytes representation of the given object instances.

Parameters

models (list[~T]) – A sequence of minos models.

Returns

A bytes object.

Return type

bytes

classmethod to_avro_str(models)

Build the avro string representation of the given object instances.

Parameters

models (list[~T]) – A sequence of minos models.

Returns

A bytes object.

Return type

str

type_hints = {}
type_hints_parameters = ()
update([E, ]**F) → None.  Update D from mapping/iterable E and F.

If E present and has a .keys() method, does: for k in E: D[k] = E[k] If E present and lacks .keys() method, does: for (k, v) in E: D[k] = v In either case, this is followed by: for k, v in F.items(): D[k] = v

values() → an object providing a view on D's values