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Service

id: py-Service​

Service

Services in layline.io provide integrations with external systems — databases, message queues, HTTP APIs, email servers, and more. You configure services through Service Assets in the UI, then access them in Python via the services object.

Available service types include JDBC, HTTP, Email, Cassandra, Hazelcast, Aerospike, and more.

At a Glance​

# Access a configured service
db_service = services.MyDBService
email_service = services.EmailService

# Open a connection (for connection-based services like JDBC)
connection = db_service.openConnection()

# Call service functions
result = connection.MyQuery(message)

Accessing Services​

Services linked to your Python Asset are available through the services object using their configured names.

# In your Python Asset configuration, you linked:
# - MyDBService (JDBC Service)
# - EmailService (Email Service)

db = services.MyDBService
mail = services.EmailService

Connection-Based Services​

Some services (like JDBC) provide connections that support transactions:

connection = None

def on_stream_start():
    global connection
    if not connection:
        connection = services.MyDBService.openConnection()
    connection.beginTransaction()

def on_commit():
    global connection
    if connection:
        connection.commitTransaction()
        connection.closeConnection()
        connection = None

See Connection for full details on transactions and function calls.

Direct Services​

Some services (like HTTP, Email) don't use connections — you call methods directly:

# Send email
services.EmailService.Send({
    'from': '[email protected]',
    'toList': '[email protected]',
    'subject': 'System Alert',
    'body': 'Processing completed.'
})

See Email for email-specific options.

See Also​

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