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Feature Overview

This page gives an overview of the most important features of Local Spooler. For more information about the underlying product, refer to the Output Engine documentation.

Architecture & Operation

  • Spool-Only Forwarding

    Local Spooler is the spool-only version of PLOSSYS Output Engine and forwards output jobs to a central Output Engine system via IPP, see Local Spooler is ….

  • Relay Printer Queue

    Any job addressed to a printer that Local Spooler cannot identify is sent to the relay printer queue and forwarded via IPP to the target Output Engine system, see configure the printer queue for Windows or for Linux.

  • Fail-Safe Configuration and Messaging

    Consul maintains membership information and distributes the configuration across the cluster in a fail-safe way. SEAL NATS acts as a fail-safe message broker and prevents message loss, see Services > Infrastructure Services.

  • easyPRIMA Interface

    Local Spooler supports easyPRIMA as of version 1.3.0, see preconditions for Windows or for Linux.

  • OIDC Identity Provider (Optional)

    An optional OIDC identity provider can be connected for authentication. SEAL Systems provides a preconfigured identity provider based on Keycloak, the seal-keycloak service, but any other OIDC-compliant identity provider can be used instead, see Services > Infrastructure Services.

Printing & Queue Processing

  • LPR, IPP & IPPS

    Local Spooler accepts output jobs via the standard printing protocols LPR, IPP, and IPPS, see Ports.

  • Script as Job Output

    Instead of outputting a job to a printer, a script can be executed, for example to copy the spool file to the file system or to send it via e-mail, see the Output Engine documentation on configuring a script as job output for Windows or for Linux.

Logging & Monitoring

  • PLOSSYS Infoclient

    External tool showing client-side status notifications for output jobs in a tray icon. Local Spooler provides the interface for it via the seal-job-notifier service, see Ports.

  • Prometheus Monitoring

    Performance metrics are exposed via a Prometheus interface and can be visualized, for example with Grafana, see Metrics.

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