2 Commits (0a0e320ca8a844c8b66f5410d7469b371a8e06d9)

Author	SHA1	Message	Date
Paul Fitzpatrick	e30d0fd5d0	(core) fix sync to s3 when doc is marked as dirty but proves to be clean ... Summary: This fixes a two problems: * A mistake in `KeyedMutex.runExclusive`. * Logic about saving a document to s3 when the document is found to match what is already there. `HostedStorageManager.flushDoc` could get caught in a loop if a document was uploaded to s3 and then, without any change to it, marked as dirty. Low level code would detect there was no change and skip the upload; but then the snapshotId could be unknown, causing an error and retries. This diff fixes that problem by discovering the snapshotId on downloads and tracking it. It also corrects a mutex problem that may have been creating the scenario. A small delay is added to `flushDoc` to mitigate the effect of similar problems in future. Exponential backoff would be good, but `flushDoc` is called in some situations where long delays would negatively impact worker shutdown or user work. Test Plan: added tests Reviewers: dsagal Reviewed By: dsagal Differential Revision: https://phab.getgrist.com/D2654	4 years ago
Paul Fitzpatrick	71519d9e5c	(core) revamp snapshot inventory ... Summary: Deliberate changes: * save snapshots to s3 prior to migrations. * label migration snapshots in s3 metadata. * avoid pruning migration snapshots for a month. Opportunistic changes: * Associate document timezone with snapshots, so pruning can respect timezones. * Associate actionHash/Num with snapshots. * Record time of last change in snapshots (rather than just s3 upload time, which could be a while later). This ended up being a biggish change, because there was nowhere ideal to put tags (list of possibilities in diff). Test Plan: added tests Reviewers: dsagal Reviewed By: dsagal Differential Revision: https://phab.getgrist.com/D2646	4 years ago