* dvc: get rid of is_walking_tree
No longer needed. Some applications of `isinstance()` will be refactored
in the future, as trees will just provide the needed functionality.
* dvc: move GitTree to dvc/tree/
* dvc: rename *RemoteTree to *Tree
* remote: move constants into trees
* remote: replace Remote() Cache() helper functions
* output: update for remote changes
* cache/data_cloud: update for remote changes
* dependency: update for remote changes
* stage: update for remote changes
* remote: move remaining non-index methods into tree
* tests: update remote unit tests
* remote: LocalCache needs to lock remote index, not cache index
* fix bugs from moved PARAM_CHECKSUM/PARAM_RELPATH
* tests: repo tree open needs state context
* remote: make Remote.gc a class method
* operates on obj.tree, so that GC can be done with both remote and
cache instances
* bug fixes
* tests: update test_data_cloud
* bug fixes
* tests: update func tests
* remote: move upload()/download() into tree
* remote: move path_info/path_cls into tree
* remote.azure: finish moving methods into tree
* remote.gs: finish moving methods into tree
* remote.hdfs: finish moving methods to tree
* remote.http: finish moving methods into tree
* remote.oss: finish moving methods into tree
* remote.s3: finish moving methods into tree
* remote.ssh: finish moving methods into tree
* remote.gdrive: finish moving methods into tree
* tests: update remote unit tests
* tests: update func tests
* remote: use walk_files() for all remotes
* list_cache_paths() now uses tree.walk_files() for all remotes except
local/ssh
* fix DS warnings
* bugfixes
Default chunk size for gs is 100M, which might be too much for
particular network. So if we are getting ConnectionError, we
should try lowering the chunk size until we reach the minimum
allowed chunk size of 256K. Also note that `chunk_size` must be a
multiple of 256K per the API specification.
Fixes#2572
Replaced Path* dataclasses with PathInfo/URLInfo/CloudURLInfo, which
know how parse, serialize, stringify and join themselves. They also
provide useful accessors like part of an url or pathlib.Path like
.parent or .name.
Along the way two families of bugs where fixed and should never occur in
the future:
- paths not matched as strings anymore, e.g. using str.startswith()
- Output.path is eliminated as ambiguous
Both families might had caused undefined surprising behavior when local
and remote paths clash.