Templates baked in a hardcoded influxdb datasource uid that only matched the
Grafana the templates were authored against. Any other Grafana (fresh laptop,
VPS, rebuilt instance) rendered every panel as "Datasource <uid> not found".
resolveDatasourceUid() queries GET /api/datasources, picks the first influxdb
one, and caches the result. rewriteDatasourceUid() then walks panels, nested
row panels, panel.targets[], and templating.list[] and rewrites every influxdb
uid before the dashboard is pushed. Annotation datasources (type: "grafana")
and template-variable refs ($datasource) are left alone. Failure is silent and
panels keep the template uid, so behavior is never worse than before.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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