database module¶

Bases: object

class Database provides lower level access to raw snapshot data used to construct analysis data

__init__(handle)[source]¶

get_snapshot(id: int) → Snapshot | None[source]¶

Get a snapshot by its id, or None if no snapshot with that id exists

Parameters:

id (int) –

Return type:

Snapshot | None

read_global(key: str) → str[source]¶

Get a specific global by key

Parameters:

key (str) –

Return type:

str

read_global_data(key: str) → DataBuffer[source]¶

Get a specific global by key, as a binary buffer

Parameters:

key (str) –

Return type:

DataBuffer

remove_snapshot(id: int)[source]¶

Remove a snapshot in the database by id, deleting its contents and references. Attempting to remove a snapshot with children will raise an exception.

Parameters:

id (int) –

trim_snapshot(id: int)[source]¶

Trim a snapshot’s contents in the database by id, but leave the parent/child hierarchy intact. Future references to this snapshot will return False for has_contents

Parameters:

id (int) –

write_global(key: str, value: str)[source]¶

Write a global into the database

Parameters:

• key (str) –

• value (str) –

write_global_data(key: str, value: DataBuffer)[source]¶

Write a binary buffer into a global in the database

Parameters:

• key (str) –

• value (DataBuffer) –

property analysis_cache: KeyValueStore¶

Get the backing analysis cache kvs (read-only)

property current_snapshot: Snapshot | None¶

Get the current snapshot

property file: FileMetadata¶

Get the owning FileMetadata (read-only)

property global_keys: List[str]¶

Get a list of keys for all globals in the database (read-only)

property globals: Dict[str, str]¶

Get a dictionary of all globals (read-only)

property snapshots: List[Snapshot]¶

Get a list of all snapshots in the database (read-only)

Bases: object

class KeyValueStore maintains access to the raw data stored in Snapshots and various other Database-related structures.

__init__(buffer: DataBuffer | None = None, handle=None)[source]¶

Parameters:

buffer (DataBuffer | None) –

begin_namespace(name: str)[source]¶

Begin storing new keys into a namespace

Parameters:

name (str) –

end_namespace()[source]¶

End storing new keys into a namespace

get_value(key: str) → DataBuffer[source]¶

Get the value for a single key

Parameters:

key (str) –

Return type:

DataBuffer

set_value(key: str, value: DataBuffer)[source]¶

Set the value for a single key

Parameters:

• key (str) –

• value (DataBuffer) –

property data_size: int¶

Length of serialized data (read-only)

property empty: bool¶

If the kvs is empty (read-only)

property keys¶

Get a list of all keys stored in the kvs (read-only)

property namespace_size: int¶

Number of namespaces pushed with begin_namespace (read-only)

property serialized_data: DataBuffer¶

Get the stored representation of the kvs (read-only)

property value_size: int¶

Number of values in the kvs (read-only)

property value_storage_size: int¶

Size of all data in storage (read-only)

Bases: object

class Snapshot is a model of an individual database snapshot, created on save.

__init__(handle)[source]¶

has_ancestor(other: Snapshot) → bool[source]¶

Determine if this snapshot has another as an ancestor

Parameters:

other (Snapshot) –

Return type:

bool

property children: List[Snapshot]¶

Get a list of all child snapshots of the snapshot (read-only)

property data: KeyValueStore¶

Get the backing kvs data with snapshot fields (read-only)

property database: Database¶

Get the owning database (read-only)

property file_contents: DataBuffer¶

Get a buffer of the raw data at the time of the snapshot (read-only)

property file_contents_hash: DataBuffer¶

Get a hash of the data at the time of the snapshot (read-only)

property first_parent: Snapshot | None¶

Get the first parent of the snapshot, or None if it has no parents (read-only)

property has_contents: bool¶

If the snapshot has contents, and has not been trimmed (read-only)

property has_undo: bool¶

If the snapshot has undo data (read-only)

property id: int¶

Get the numerical id (read-only)

property is_auto_save: bool¶

If the snapshot was the result of an auto-save (read-only)

property name: str¶

Get the displayed snapshot name

property parents: List[Snapshot]¶

Get a list of all parent snapshots of the snapshot (read-only)

property undo_entries¶

Get a list of undo entries at the time of the snapshot (read-only)