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sofarr/docs/diagrams/seq-polling.puml
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docs: comprehensive architecture documentation with PlantUML diagrams
- docs/ARCHITECTURE.md: full system overview, technology stack, directory
  structure, component architecture, data flow, auth, polling/caching,
  download matching pipeline, API reference, frontend architecture,
  configuration, deployment guide
- docs/diagrams/component.puml: system component diagram
- docs/diagrams/seq-auth.puml: authentication sequence diagram
- docs/diagrams/seq-dashboard.puml: dashboard request sequence diagram
- docs/diagrams/seq-polling.puml: background polling cycle sequence
- docs/diagrams/class-server.puml: server-side class/module diagram
- docs/diagrams/class-data.puml: data model / entity diagram
- docs/diagrams/state-ui.puml: frontend UI state diagram
- docs/diagrams/state-poller.puml: poller state diagram
- docs/diagrams/activity-matching.puml: download matching activity diagram
2026-05-16 00:30:38 +01:00

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@startuml seq-polling
!theme plain
title sofarr — Background Polling Cycle
participant "index.js\n(startup)" as entry
participant "Poller" as poller
participant "Config" as config
participant "SABnzbd\n(per instance)" as sab
participant "Sonarr\n(per instance)" as sonarr
participant "Radarr\n(per instance)" as radarr
participant "qBittorrent\nClient" as qbt
participant "MemoryCache" as cache
== Startup ==
entry -> poller : startPoller()
activate poller
alt POLL_INTERVAL > 0
poller -> poller : pollAllServices() (immediate)
poller -> poller : setInterval(pollAllServices,\nPOLL_INTERVAL)
else POLL_INTERVAL = 0
poller --> entry : "Polling disabled, on-demand mode"
end
== Poll Cycle ==
poller -> poller : Check: polling flag?\n(skip if concurrent)
poller -> poller : polling = true
poller -> poller : start = Date.now()
poller -> config : getSABnzbdInstances()
config --> poller : [{ id, url, apiKey }]
poller -> config : getSonarrInstances()
config --> poller : [{ id, url, apiKey }]
poller -> config : getRadarrInstances()
config --> poller : [{ id, url, apiKey }]
note over poller : All fetches run in\nparallel via Promise.all,\neach wrapped in timed()
par SABnzbd Queue
poller -> sab : GET /api?mode=queue
sab --> poller : { queue: { slots, status, speed } }
and SABnzbd History
poller -> sab : GET /api?mode=history&limit=10
sab --> poller : { history: { slots } }
and Sonarr Tags
poller -> sonarr : GET /api/v3/tag
sonarr --> poller : [{ id, label }]
and Sonarr Queue
poller -> sonarr : GET /api/v3/queue\n?includeSeries=true
sonarr --> poller : { records: [{ seriesId, series, ... }] }
and Sonarr History
poller -> sonarr : GET /api/v3/history\n?pageSize=10
sonarr --> poller : { records: [{ seriesId, ... }] }
and Radarr Queue
poller -> radarr : GET /api/v3/queue\n?includeMovie=true
radarr --> poller : { records: [{ movieId, movie, ... }] }
and Radarr History
poller -> radarr : GET /api/v3/history\n?pageSize=10
radarr --> poller : { records: [{ movieId, ... }] }
and Radarr Tags
poller -> radarr : GET /api/v3/tag
radarr --> poller : [{ id, label }]
and qBittorrent
poller -> qbt : getTorrents()
qbt --> poller : [{ name, progress, ... }]
end
poller -> poller : Record per-task timings\nlastPollTimings = { totalMs,\ntimestamp, tasks: [{label, ms}] }
poller -> poller : cacheTTL = POLL_INTERVAL × 3
poller -> cache : set('poll:sab-queue', ..., cacheTTL)
poller -> cache : set('poll:sab-history', ..., cacheTTL)
poller -> cache : set('poll:sonarr-tags', ..., cacheTTL)
note over poller : Tag queue records with\n_instanceUrl on embedded\nseries/movie objects
poller -> cache : set('poll:sonarr-queue', ..., cacheTTL)
poller -> cache : set('poll:sonarr-history', ..., cacheTTL)
poller -> cache : set('poll:radarr-queue', ..., cacheTTL)
poller -> cache : set('poll:radarr-history', ..., cacheTTL)
poller -> cache : set('poll:radarr-tags', ..., cacheTTL)
poller -> cache : set('poll:qbittorrent', ..., cacheTTL)
poller -> poller : polling = false\nlog elapsed time
deactivate poller
@enduml