[Chromecast] CastSysInfo implementation.

chromecast/public/cast_sys_info.h

Index: chromecast/public/cast_sys_info.h
diff --git a/chromecast/public/cast_sys_info.h b/chromecast/public/cast_sys_info.h
new file mode 100644
index 0000000000000000000000000000000000000000..488fb7375ebdf4a848b7c9ef3799ee99b36d9dc0
--- /dev/null
+++ b/chromecast/public/cast_sys_info.h
@@ -0,0 +1,64 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.

[gunsch, 2015/04/20 18:02:31]

while you're here, can you add a chromecast/public/DEPS file that *removes* all
other dependencies that chromecast/ has? e.g.

"-chromecast"
"-base"
"-net"

etc

[derekjchow1, 2015/04/20 21:15:32]

Done. It'd be better if we could specify that files in this directory should not
depend on anything though.

+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CHROMECAST_PUBLIC_CAST_SYS_INFO_H_
+#define CHROMECAST_PUBLIC_CAST_SYS_INFO_H_
+
+#include <string>
+#include <vector>
+
+namespace chromecast {
+
+// Pure abstract interface for system information which is accessed by other
+// processes as well as cast_shell browser process. All informations are

[halliwell, 2015/04/20 18:12:18]

I don't think "informations" is a word :)

[derekjchow1, 2015/04/20 21:15:32]

Done.

+// immutable except FDR count which must be persistent against factory reset.
+class CastSysInfo {
+ public:
+  enum BuildType {
+    BUILD_ENG,
+    BUILD_BETA,
+    BUILD_PRODUCTION,
+  };
+
+  static CastSysInfo* Create();

[byungchul, 2015/04/20 18:00:24]

scoped_ptr<CastSysInfo>

[gunsch, 2015/04/20 18:02:31]

No. scoped_ptr is a Chromium dependency. Leave as-is.

[byungchul, 2015/04/20 18:10:19]

Hmm.. Unless we want to make all CastSysInfo in shlib, I think it should be out
of CastSysInfo. Otherwise, it overlaps with CastSysInfoShlib::Create() and makes
confusions.

[gunsch, 2015/04/20 18:11:49]

I'm fine if we want to put a convenience function that wraps it into somewhere
like chromecast/base/cast_sys_info.h. But I think we should keep all Chromium
includes out of chromecast/public/.

[derekjchow1, 2015/04/20 21:15:32]

Done. Moved to base/cast_sys_info.h and renamed CreateSysInfo to avoid
confusion.

+
+  virtual ~CastSysInfo() {}
+
+  virtual void Initialize() = 0;
+  virtual void Finalize() = 0;

[halliwell, 2015/04/20 18:12:18]

What do Initialize/Finalize do?  Seems like a holdover from chromecast service
pattern.  If I'm just going to create one of these as a throwaway object to
quickly get some system info, would be nicer if it just used ctor/dtor to
initialize/finalize.

[derekjchow1, 2015/04/20 21:15:32]

Our Android code uses it to do some Java initialization, so I don't think we can
easily remove these functions.

[halliwell, 2015/04/20 21:19:43]

Ok.  So what are the rules for client using this class?  How do I use Initialize
and Finalize as a caller?

[derekjchow1, 2015/04/20 22:10:52]

This is only relevant for ATV, but for correctness, we should call Initialize
before we use the class and Finalize before we destroy it.

I completely agree with you though, we should remove these functions. I think we
can refactor our internal code a little bit to get rid of this corner case.

[halliwell, 2015/04/20 22:22:11]

Ok, but if that's all there is to it, we could just move the Initialize code
into the ctor and Finalize into the dtor ... ? :)  And if there's more to it,
that should be documented?

Also, if it's just an ATV thing, is there a way to remove this from the public
interface and restrict the Initialize/Finalize calls to ATV?

[gunsch, 2015/04/20 22:34:49]

I believe there may actually be more to it. Byungchul, can you comment? I agree
that since we're changing to shlib model from previous public-interface model,
we should prefer ctor/dtor if possible.

[byungchul, 2015/04/20 23:51:14]

When it was instantiated in chromecast service client, it should be consistent
with other, injecting dependencies in ctor, being initialized by chromecast
service later.

Now, I am fine without Init/Finalize in cast sysinfo because it is out of
chromecast service client.

[derekjchow1, 2015/04/21 21:48:33]

Removed.

+
+  // Returns the system build type.
+  virtual BuildType GetBuildType() = 0;
+  // Returns release channel of system.
+  virtual const std::string GetSystemReleaseChannel() = 0;
+  // Returns serial number of the device.
+  virtual const std::string GetSerialNumber() = 0;
+  // Returns product code name of the device (eg: anchovy, salami, fugu, ...).
+  virtual const std::string GetProductName() = 0;
+  // Returns model name of device (eg: Chromecast, Nexus Player, ...).
+  virtual const std::string GetDeviceModel() = 0;
+  // Returns the board's name (eg: bg2proto, eureka-b1, ...).
+  virtual const std::string GetBoardName() = 0;
+  // Returns the revision of board (eg: 514, ...).
+  virtual const std::string GetBoardRevision() = 0;
+  // Returns device manufacturer (eg: Google, Sony, ...).
+  virtual const std::string GetManufacturer() = 0;
+  // Returns the system's build number (eg: 100, 20000 ...).
+  // This describes system version which may be different with
+  // CAST_BUILD_NUMBER.
+  virtual const std::string GetSystemBuildNumber() = 0;
+
+  // Returns default country and locale baked from the factory.
+  virtual const std::string GetFactoryCountry() = 0;
+  virtual const std::string GetFactoryLocale(std::string* second_locale) = 0;
+
+  // Returns the wifi interface.
+  virtual const std::string GetWifiInterface() = 0;
+  // Returns the soft AP interface.
+  virtual const std::string GetApInterface() = 0;
+};
+
+}  // namespace chromecast
+
+#endif  // CHROMECAST_PUBLIC_CAST_SYS_INFO_H_