[shill] Add support for setting properties.
This CL adds a framework for supporting RPC-exposed properties in Shill.
It also plumbs the code for setting properties on Service objects to prove
the approach. Device and Manager settings will follow.
BUG=chromium-os:16343
TEST=build shill, run unit tests.
Change-Id: I55869453d6039e688f1a49be9dfb1ba1315efe0a
Reviewed-on: http://gerrit.chromium.org/gerrit/3004
Reviewed-by: Darin Petkov <petkov@chromium.org>
Tested-by: Chris Masone <cmasone@chromium.org>
diff --git a/accessor_interface.h b/accessor_interface.h
new file mode 100644
index 0000000..85f3913
--- /dev/null
+++ b/accessor_interface.h
@@ -0,0 +1,48 @@
+// Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef SHILL_ACCESSOR_INTERFACE_
+#define SHILL_ACCESSOR_INTERFACE_
+
+#include <map>
+#include <string>
+#include <tr1/memory>
+
+#include <base/basictypes.h>
+
+namespace shill {
+
+// A templated abstract base class for objects that can be used to access
+// properties stored in objects that are meant to be made available over RPC.
+// The intended usage is that an object stores a maps of strings to
+// AccessorInterfaces of the appropriate type, and then uses
+// map[name]->Get() and map[name]->Set(value) to get and set the properties.
+template <class T>
+class AccessorInterface {
+ public:
+ AccessorInterface() {}
+ virtual ~AccessorInterface() {}
+
+ // Provides read-only access.
+ virtual const T &Get() = 0;
+ // Attempts to set the wrapped value. Returns true upon success.
+ virtual bool Set(const T &value) = 0;
+
+ private:
+ DISALLOW_COPY_AND_ASSIGN(AccessorInterface);
+};
+
+// Using a smart pointer here allows pointers to classes derived from
+// AccessorInterface<> to be stored in maps and other STL container types.
+typedef std::tr1::shared_ptr<AccessorInterface<bool> > BoolAccessor;
+typedef std::tr1::shared_ptr<AccessorInterface<int32> > Int32Accessor;
+typedef std::tr1::shared_ptr<
+ AccessorInterface<std::map<std::string, std::string> > > StringmapAccessor;
+typedef std::tr1::shared_ptr<AccessorInterface<std::string> > StringAccessor;
+typedef std::tr1::shared_ptr<AccessorInterface<uint8> > Uint8Accessor;
+typedef std::tr1::shared_ptr<AccessorInterface<uint16> > Uint16Accessor;
+
+} // namespace shill
+
+#endif // SHILL_ACCESSOR_INTERFACE_