[feat] Add parallax implementation on top of daos catalogue and store

src/dummy_daos/dummy_parallax.cc

@@ -0,0 +1,47 @@
+/*
+ * (C) Copyright 1996- ECMWF.
+ *
+ * This software is licensed under the terms of the Apache Licence Version 2.0
+ * which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
+ * In applying this licence, ECMWF does not waive the privileges and immunities
+ * granted to it by virtue of its status as an intergovernmental organisation nor
+ * does it submit to any jurisdiction.
+ */
+
+/*
+ * @file   dummy_daos.cc
+ * @author Nicolau Manubens
+ * @date   Jun 2022
+ */
+
+#include "dummy_daos.h"
+
+#include "eckit/config/Resource.h"
+#include "eckit/exception/Exceptions.h"
+
+using eckit::PathName;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+typedef struct daos_handle_internal_t {
+    PathName path;
+} daos_handle_internal_t;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+const PathName& dummy_daos_root() {
+
+    static PathName tmpdir = eckit::Resource<PathName>("$TMPDIR", "/tmp");
+    static PathName daos_root = eckit::Resource<PathName>("$DUMMY_DAOS_DATA_ROOT", tmpdir / "parallax");
+    return daos_root;
+
+}
+
+const PathName& dummy_daos_get_handle_path(daos_handle_t handle) {
+
+    ASSERT(handle.impl);
+    return handle.impl->path;
+
+}
+
+//----------------------------------------------------------------------------------------------------------------------