Restore missing bzl file

fbshipit-source-id: e348a9709e36fb4c3ded63b7ebdc1c880be85755

tools/build_defs/oss/soloader_defs.bzl

@@ -0,0 +1,83 @@
+def _deps_decorator(**kwargs):
+    """
+    Dependencies starting with '//deps/' should be provided (included in
+    'provided_deps' rather than 'deps'). This decorator takes care
+    of moving all such dependencies from 'deps' to 'provided_deps'.
+    """
+    all_deps = kwargs.get("deps", [])
+    oss_deps = [dep for dep in all_deps if dep.startswith("//deps:")]
+    kwargs["deps"] = [dep for dep in all_deps if dep not in oss_deps]
+    kwargs.setdefault("provided_deps", []).extend(oss_deps)
+    return kwargs
+
+def android_library(**kwargs):
+    native.android_library(**_deps_decorator(**kwargs))
+
+def android_aar(**kwargs):
+    native.android_aar(**_deps_decorator(**kwargs))
+
+def fb_java_library(**kwargs):
+    native.java_library(**_deps_decorator(**kwargs))
+
+def fb_core_android_library(**kwargs):
+    android_library(**kwargs)
+
+DEPENDENCIES_INDEX = {}
+
+def _add_dependency_to_index(name, **dep):
+    DEPENDENCIES_INDEX[name] = dep
+
+def maven_library(
+        name,
+        group,
+        artifact,
+        version,
+        sha1,
+        visibility,
+        packaging = "jar",
+        scope = "compiled"):
+    """
+    Creates remote_file and prebuilt_jar rules for a maven artifact.
+    """
+    _add_dependency_to_index(
+        name = name,
+        artifact = artifact,
+        group = group,
+        packaging = packaging,
+        scope = scope,
+        sha1 = sha1,
+        version = version,
+    )
+
+    remote_file_name = "{}-remote".format(name)
+    native.remote_file(
+        name = remote_file_name,
+        out = "{}-{}.{}".format(name, version, packaging),
+        url = ":".join(["mvn", group, artifact, packaging, version]),
+        sha1 = sha1,
+    )
+
+    if packaging == "jar":
+        native.prebuilt_jar(
+            name = name,
+            binary_jar = ":{}".format(remote_file_name),
+            visibility = visibility,
+        )
+    else:
+        native.android_prebuilt_aar(
+            name = name,
+            aar = ":{}".format(remote_file_name),
+            visibility = visibility,
+        )
+
+def define_list_deps_target():
+    """
+    Generates rule that dumps all maven_libraries defined in given
+    BUCK file in json format.
+    """
+    json_deps = struct(**DEPENDENCIES_INDEX).to_json()
+    native.genrule(
+        name = "list-deps",
+        out = "dependencies.json",
+        cmd = """echo '{}' > $OUT""".format(json_deps),
+    )