This commit is contained in:
chrislu
2022-09-14 23:06:44 -07:00
parent c8645fd232
commit 21c0587900
45 changed files with 730 additions and 694 deletions

View File

@@ -73,39 +73,48 @@ func detectMountInfo(commandEnv *CommandEnv, writer io.Writer, dir string) (*rem
}
/*
This function update entry.RemoteEntry if the remote has any changes.
This function update entry.RemoteEntry if the remote has any changes.
To pull remote updates, or created for the first time, the criteria is:
entry == nil or (entry.RemoteEntry != nil and (entry.RemoteEntry.RemoteTag != remote.RemoteTag or entry.RemoteEntry.RemoteMTime < remote.RemoteMTime ))
After the meta pull, the entry.RemoteEntry will have:
remoteEntry.LastLocalSyncTsNs == 0
Attributes.FileSize = uint64(remoteEntry.RemoteSize)
Attributes.Mtime = remoteEntry.RemoteMtime
remoteEntry.RemoteTag = actual remote tag
chunks = nil
To pull remote updates, or created for the first time, the criteria is:
When reading the file content or pulling the file content in "remote.cache", the criteria is:
Attributes.FileSize > 0 and len(chunks) == 0
After caching the file content, the entry.RemoteEntry will be
remoteEntry.LastLocalSyncTsNs == time.Now.UnixNano()
Attributes.FileSize = uint64(remoteEntry.RemoteSize)
Attributes.Mtime = remoteEntry.RemoteMtime
chunks = non-emtpy
entry == nil or (entry.RemoteEntry != nil and (entry.RemoteEntry.RemoteTag != remote.RemoteTag or entry.RemoteEntry.RemoteMTime < remote.RemoteMTime ))
When "weed filer.remote.sync" to upload local changes to remote, the criteria is:
Attributes.Mtime > remoteEntry.RemoteMtime
Right after "weed filer.remote.sync", the entry.RemoteEntry will be
remoteEntry.LastLocalSyncTsNs = time.Now.UnixNano()
remoteEntry.RemoteSize = actual remote size, which should equal to entry.Attributes.FileSize
remoteEntry.RemoteMtime = actual remote mtime, which should be a little greater than entry.Attributes.Mtime
remoteEntry.RemoteTag = actual remote tag
After the meta pull, the entry.RemoteEntry will have:
remoteEntry.LastLocalSyncTsNs == 0
Attributes.FileSize = uint64(remoteEntry.RemoteSize)
Attributes.Mtime = remoteEntry.RemoteMtime
remoteEntry.RemoteTag = actual remote tag
chunks = nil
If entry does not exists, need to pull meta
If entry.RemoteEntry == nil, this is a new local change and should not be overwritten
If entry.RemoteEntry.RemoteTag != remoteEntry.RemoteTag {
the remote version is updated, need to pull meta
}
When reading the file content or pulling the file content in "remote.cache", the criteria is:
Attributes.FileSize > 0 and len(chunks) == 0
After caching the file content, the entry.RemoteEntry will be
remoteEntry.LastLocalSyncTsNs == time.Now.UnixNano()
Attributes.FileSize = uint64(remoteEntry.RemoteSize)
Attributes.Mtime = remoteEntry.RemoteMtime
chunks = non-emtpy
When "weed filer.remote.sync" to upload local changes to remote, the criteria is:
Attributes.Mtime > remoteEntry.RemoteMtime
Right after "weed filer.remote.sync", the entry.RemoteEntry will be
remoteEntry.LastLocalSyncTsNs = time.Now.UnixNano()
remoteEntry.RemoteSize = actual remote size, which should equal to entry.Attributes.FileSize
remoteEntry.RemoteMtime = actual remote mtime, which should be a little greater than entry.Attributes.Mtime
remoteEntry.RemoteTag = actual remote tag
If entry does not exists, need to pull meta
If entry.RemoteEntry == nil, this is a new local change and should not be overwritten
If entry.RemoteEntry.RemoteTag != remoteEntry.RemoteTag {
the remote version is updated, need to pull meta
}
*/
func pullMetadata(commandEnv *CommandEnv, writer io.Writer, localMountedDir util.FullPath, remoteMountedLocation *remote_pb.RemoteStorageLocation, dirToCache util.FullPath, remoteConf *remote_pb.RemoteConf) error {