dvcfile: support remote per output

Related to iterative#2095

Author: efiop

dvc/output.py

@@ -81,6 +81,7 @@ def loadd_from(stage, d_list):
         desc = d.pop(Output.PARAM_DESC, False)
         isexec = d.pop(Output.PARAM_ISEXEC, False)
         live = d.pop(Output.PARAM_LIVE, False)
+        remote = d.pop(Output.PARAM_REMOTE, None)
         ret.append(
             _get(
                 stage,
@@ -94,6 +95,7 @@ def loadd_from(stage, d_list):
                 desc=desc,
                 isexec=isexec,
                 live=live,
+                remote=remote,
             )
         )
     return ret
@@ -109,6 +111,7 @@ def loads_from(
     checkpoint=False,
     isexec=False,
     live=False,
+    remote=None,
 ):
     return [
         _get(
@@ -122,6 +125,7 @@ def loads_from(
             checkpoint=checkpoint,
             isexec=isexec,
             live=live,
+            remote=remote,
         )
         for s in s_list
     ]
@@ -162,7 +166,6 @@ def load_from_pipeline(stage, data, typ="outs"):
     metric = typ == stage.PARAM_METRICS
     plot = typ == stage.PARAM_PLOTS
     live = typ == stage.PARAM_LIVE
-
     if live:
         # `live` is single object
         data = [data]
@@ -185,6 +188,7 @@ def load_from_pipeline(stage, data, typ="outs"):
                 Output.PARAM_CACHE,
                 Output.PARAM_PERSIST,
                 Output.PARAM_CHECKPOINT,
+                Output.PARAM_REMOTE,
             ],
         )
 
@@ -255,6 +259,7 @@ class Output:
     PARAM_LIVE = "live"
     PARAM_LIVE_SUMMARY = "summary"
     PARAM_LIVE_HTML = "html"
+    PARAM_REMOTE = "remote"
 
     METRIC_SCHEMA = Any(
         None,
@@ -283,6 +288,7 @@ def __init__(
         live=False,
         desc=None,
         isexec=False,
+        remote=None,
     ):
         self.repo = stage.repo if stage else None
 
@@ -326,7 +332,7 @@ def __init__(
         self.obj = None
         self.isexec = False if self.IS_DEPENDENCY else isexec
 
-        self.def_remote = None
+        self.remote = remote
 
     def _parse_path(self, fs, path_info):
         if fs.scheme != "local":
@@ -843,7 +849,8 @@ def get_dir_cache(self, **kwargs):
         try:
             objects.check(self.odb, obj)
         except FileNotFoundError:
-            self.repo.cloud.pull([obj.hash_info], **kwargs)
+            remote = self.repo.cloud.get_remote_odb(self.remote)
+            self.repo.cloud.pull([obj.hash_info], odb=remote, **kwargs)
 
         if self.obj:
             return self.obj
@@ -855,9 +862,9 @@ def get_dir_cache(self, **kwargs):
 
         return self.obj
 
-    def collect_used_dir_cache(
+    def _collect_used_dir_cache(
         self, remote=None, force=False, jobs=None, filter_info=None
-    ) -> Dict[Optional["ObjectDB"], Set["HashInfo"]]:
+    ) -> Optional["Tree"]:
         """Fetch dir cache and return used object IDs for this out."""
 
         try:
@@ -878,13 +885,13 @@ def collect_used_dir_cache(
                     "unable to fully collect used cache"
                     " without cache for directory '{}'".format(self)
                 )
-            return {}
+            return None
 
         obj = self.get_obj()
         if filter_info and filter_info != self.path_info:
             prefix = filter_info.relative_to(self.path_info).parts
             obj = obj.filter(prefix)
-        return {None: set(self._named_obj_ids(obj))}
+        return obj
 
     def get_used_objs(
         self, **kwargs
@@ -917,22 +924,31 @@ def get_used_objs(
             return {}
 
         if self.is_dir_checksum:
-            return self.collect_used_dir_cache(**kwargs)
+            obj = self._collect_used_dir_cache(**kwargs)
+        else:
+            obj = self.get_obj(filter_info=kwargs.get("filter_info"))
+            if not obj:
+                obj = self.odb.get(self.hash_info)
 
-        obj = self.get_obj(filter_info=kwargs.get("filter_info"))
         if not obj:
-            obj = self.odb.get(self.hash_info)
+            return {}
+
+        if self.remote:
+            remote = self.repo.cloud.get_remote_odb(name=self.remote)
+        else:
+            remote = None
 
-        return {None: set(self._named_obj_ids(obj))}
+        return {remote: self._named_obj_ids(obj)}
 
     def _named_obj_ids(self, obj):
         name = str(self)
         obj.hash_info.obj_name = name
-        yield obj.hash_info
+        oids = {obj.hash_info}
         if isinstance(obj, Tree):
             for key, entry_obj in obj:
                 entry_obj.hash_info.obj_name = self.fs.sep.join([name, *key])
-                yield entry_obj.hash_info
+                oids.add(entry_obj.hash_info)
+        return oids
 
     def get_used_external(
         self, **kwargs
@@ -1033,4 +1049,5 @@ def is_plot(self) -> bool:
     Output.PARAM_CACHE: bool,
     Output.PARAM_METRIC: Output.METRIC_SCHEMA,
     Output.PARAM_DESC: str,
+    Output.PARAM_REMOTE: str,
 }

dvc/schema.py

@@ -49,6 +49,7 @@
         Output.PARAM_PERSIST: bool,
         Output.PARAM_CHECKPOINT: bool,
         Output.PARAM_DESC: str,
+        Output.PARAM_REMOTE: str,
     }
 }
 

dvc/stage/serialize.py

@@ -28,6 +28,7 @@
 PARAM_PERSIST = Output.PARAM_PERSIST
 PARAM_CHECKPOINT = Output.PARAM_CHECKPOINT
 PARAM_DESC = Output.PARAM_DESC
+PARAM_REMOTE = Output.PARAM_REMOTE
 
 DEFAULT_PARAMS_FILE = ParamsDependency.DEFAULT_PARAMS_FILE
 
@@ -52,6 +53,8 @@ def _get_flags(out):
         yield from out.plot.items()
     if out.live and isinstance(out.live, dict):
         yield from out.live.items()
+    if out.remote:
+        yield PARAM_REMOTE, out.remote
 
 
 def _serialize_out(out):

tests/func/test_data_cloud.py

@@ -609,3 +609,47 @@ def test_pull_no_00_prefix(tmp_dir, dvc, remote, monkeypatch):
     stats = dvc.pull()
     assert stats["fetched"] == 2
     assert set(stats["added"]) == {"foo", "bar"}
+
+
+def test_output_remote(tmp_dir, dvc, make_remote):
+    from dvc.utils.serialize import modify_yaml
+
+    make_remote("default", default=True)
+    make_remote("for_foo", default=False)
+    make_remote("for_data", default=False)
+
+    tmp_dir.dvc_gen("foo", "foo")
+    tmp_dir.dvc_gen("bar", "bar")
+    tmp_dir.dvc_gen("data", {"one": "one", "two": "two"})
+
+    with modify_yaml("foo.dvc") as d:
+        d["outs"][0]["remote"] = "for_foo"
+
+    with modify_yaml("data.dvc") as d:
+        d["outs"][0]["remote"] = "for_data"
+
+    dvc.push()
+
+    default = dvc.cloud.get_remote_odb("default")
+    for_foo = dvc.cloud.get_remote_odb("for_foo")
+    for_data = dvc.cloud.get_remote_odb("for_data")
+
+    assert set(default.all()) == {"37b51d194a7513e45b56f6524f2d51f2"}
+    assert set(for_foo.all()) == {"acbd18db4cc2f85cedef654fccc4a4d8"}
+    assert set(for_data.all()) == {
+        "f97c5d29941bfb1b2fdab0874906ab82",
+        "6b18131dc289fd37006705affe961ef8.dir",
+        "b8a9f715dbb64fd5c56e7783c6820a61",
+    }
+
+    clean(["foo", "bar", "data"], dvc)
+
+    dvc.pull()
+
+    assert set(dvc.odb.local.all()) == {
+        "37b51d194a7513e45b56f6524f2d51f2",
+        "acbd18db4cc2f85cedef654fccc4a4d8",
+        "f97c5d29941bfb1b2fdab0874906ab82",
+        "6b18131dc289fd37006705affe961ef8.dir",
+        "b8a9f715dbb64fd5c56e7783c6820a61",
+    }

tests/func/test_remote.py

@@ -200,7 +200,7 @@ def unreliable_upload(self, fobj, to_info, **kwargs):
     dvc.push()
     remove(dvc.odb.local.cache_dir)
 
-    baz.collect_used_dir_cache()
+    baz._collect_used_dir_cache()
     with patch.object(LocalFileSystem, "upload", side_effect=Exception):
         with pytest.raises(DownloadError) as download_error_info:
             dvc.pull()

tests/remotes/__init__.py

@@ -16,7 +16,7 @@
 )
 from .hdfs import HDFS, hadoop, hdfs, hdfs_server, real_hdfs  # noqa: F401
 from .http import HTTP, http, http_server  # noqa: F401
-from .local import Local, local_cloud, local_remote  # noqa: F401
+from .local import Local, local_cloud, local_remote, make_local  # noqa: F401
 from .oss import (  # noqa: F401
     OSS,
     TEST_OSS_REPO_BUCKET,
@@ -100,6 +100,24 @@ def docker_services(
     return Services(executor)
 
 
+@pytest.fixture
+def make_cloud(request):
+    def _make_cloud(typ):
+        return request.getfixturevalue(f"make_{typ}")()
+
+    return _make_cloud
+
+
+@pytest.fixture
+def make_remote(tmp_dir, dvc, make_cloud):
+    def _make_remote(name, typ="local", **kwargs):
+        cloud = make_cloud(typ)
+        tmp_dir.add_remote(name=name, config=cloud.config, **kwargs)
+        return cloud
+
+    return _make_remote
+
+
 @pytest.fixture
 def remote(tmp_dir, dvc, request):
     cloud = request.param

tests/remotes/local.py

@@ -17,11 +17,19 @@ def get_url():
 
 
 @pytest.fixture
-def local_cloud(make_tmp_dir):
-    ret = make_tmp_dir("local-cloud")
-    ret.url = str(ret)
-    ret.config = {"url": ret.url}
-    return ret
+def make_local(make_tmp_dir):
+    def _make_local():
+        ret = make_tmp_dir("local-cloud")
+        ret.url = str(ret)
+        ret.config = {"url": ret.url}
+        return ret
+
+    return _make_local
+
+
+@pytest.fixture
+def local_cloud(make_local):
+    return make_local()
 
 
 @pytest.fixture

tests/unit/output/test_load.py

@@ -79,6 +79,16 @@ def test_load_remote_files_from_pipeline(dvc):
     assert not out.hash_info
 
 
+def test_load_remote(dvc):
+    stage = Stage(dvc)
+    (foo, bar) = output.load_from_pipeline(
+        stage,
+        ["foo", {"bar": {"remote": "myremote"}}],
+    )
+    assert foo.remote is None
+    assert bar.remote == "myremote"
+
+
 @pytest.mark.parametrize("typ", [None, "", "illegal"])
 def test_load_from_pipeline_error_on_typ(dvc, typ):
     with pytest.raises(ValueError):