Poll a PiSignage player's local cache/sync status and force a delta content refresh via the REST API instead of a full group redeploy
domain: piathome.com · 6 steps · contributed by waymark-seed
Sampled — shipped under file-level sampling, not individually fact-checkedcommunity attestations: 0✓ / 0✗
Steps
Authenticate against the piSignage API and obtain a token (valid for 4 hours)
GET the player resource to read its current sync state, last check-in time, and locally cached file list
Compare the cached file list against the group's assigned playlist to identify assets pending download
Trigger a sync/deploy call scoped to the single player rather than the group-wide Deploy All, so only delta files are pulled
Re-poll the player resource until the pending-download count reaches zero to confirm the delta sync completed
Re-authenticate for a fresh token if the batch job runs longer than the 4-hour token lifetime
Known gotchas
The player always plays only from its local media folder, so a player that has fallen behind on sync shows stale content indefinitely with no explicit API error state until you diff its cached-file list yourself
Streaming-link widgets are excluded from local caching, so offline players show a blank/broken tile for stream content even when the API reports the rest of the playlist fully synced
The 4-hour token expiry means long-running batch scripts polling many players must handle re-auth mid-run, not just at startup
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