Classes

The core building blocks of your Layline Python applications — from data handling and time manipulation to workflow orchestration and external service integration.

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Data & Messaging

Class	Description
Arith64	Performs correct 64-bit arithmetic and bitwise operations for large integers.
CompressionUtils	Utility class for compressing and decompressing data, plus reading ZIP archives.
DataDictionary	Provides access to all data structures defined in your project — message types, record formats, and field definitions.
DataDictionaryEntity	Represents a single node in your data dictionary hierarchy for type-safe access to message fields.
DataDictionaryTypes	Represents the dynamically generated structure of a data dictionary based on the specific configuration.
Message	The central data structure in layline.io — every event flowing through a workflow is encapsulated as a Message.
MessageNode	Individual node of a Message for hierarchical data access.
PackedMessage	A memory-efficient compressed representation of a Message.
StringUtils	Utility class for common string operations: encoding, decoding, validation, and charset conversion.

Date & Time

Class	Description
DateTime	Represents a point in time with date, time, and timezone offset information.
Duration	Represents an amount of time — days, hours, minutes, seconds, milliseconds, or nanoseconds.
LocalDate	Represents a date without time or timezone — just year, month, and day.
Time	Represents a time of day without date or timezone — just hour, minute, second, and nanosecond.
TimeZone	Represents a timezone for use with DateTime, LocalDate, and Time, handling daylight saving time automatically.
ZoneOffset	Represents a fixed offset from UTC with no daylight saving time changes.

Workflow & Processing

Class	Description
Counter	A thread-safe counter for tracking numeric values — message counts, totals, or any incrementing/decrementing metric.
Metrics	Provides access to performance counters and operational metrics.
OutputPort	Represents a connection from one processor to another within a workflow.
Processor	Provides access to the current processor's configuration and runtime properties.
PythonProcessor	Defines the lifecycle hooks available in a Python Asset — startup, message arrival, stream boundaries, and shutdown.
Stream	Represents the current data stream being processed.
Workflow	Provides access to the current workflow's metadata — its name and data dictionary.

Services & Integration

Class	Description
Connection	Represents an active link to a service (e.g., JDBC database, HTTP endpoint) with transaction support.
Email	Send emails through a configured Email Service.
Service	Provides integrations with external systems — databases, message queues, HTTP APIs, email servers, and more.
TimerService	Schedule and manage timers that trigger workflows at specific times or intervals.
Vendor	Groups related StatusCode definitions together.

Status & Error Handling

Class	Description
Status	Represents a structured error, warning, or informational message attached to a Message.
StatusCode	A single entry in a Resource Status Definition Asset — the template definition for a Status.
StatusRegistry	Provides access to all defined vendors and status codes in your project.