Services¶
As spool-only version of PLOSSYS Output Engine, Local Spooler contains only part of the Output Engine services as listed below.
On how to list, start and stop the services, refer to Administrate the Output Engine Services.
Each service has their own log file. You can find those here:
- Windows:
C:\ProgramData\SEAL Systems\log - Linux:
/var/log/seal
The services expose Prometheus metrics that provide insights into their operation and performance, and can help to identify any potential issues.
For the list of ports used by the services, refer to Ports.
Local Spooler Services¶
| Service | Description | Metrics |
|---|---|---|
seal-checkin |
Is the entry point for LPR jobs. | metrics |
seal-checkout |
Responsible for sending the print job to the printer. | metrics |
seal-co-notifier |
Sends job status notifications to SAP and IPP backend systems. | metrics |
seal-controller |
Handles job and printer statuses and dispatches print jobs via streaming to follow-up services. | metrics |
seal-convert-dispatcher |
Dispatches document conversions to other convert services. | metrics |
seal-housekeeper |
Cleans up old print jobs. | metrics |
seal-ipp-checkin |
Entry point for IPP jobs. | metrics |
seal-job-notifier |
Sends job status notifications to the configured destinations. | metrics |
seal-out-ngn-message-relay |
Relay service for the transactional outbox pattern. | metrics |
seal-rest |
REST API for {{ FULL_NAME }}. Refer to Output Engine OpenAPI Specification for more information. | metrics |
Infrastructure Services¶
| Service | Description | Product |
|---|---|---|
seal-consul-agent |
Core process of Consul. The agent maintains membership information, registers services, runs checks, responds to queries, and more. | Consul by HashiCorp |
seal-mongodb |
Document database designed for ease of application development and scaling. | SEAL MongoDB |
seal-nats |
Fail-safe message broker for distributed systems. Prevents message loss. | SEAL NATS |