update_engine: Store fingerprint value from Omaha response.
Store the unique fp value from response into prefs. Value is later sent
to Omaha to determine if there is a subsequent update available
while the system is waiting to be rebooted.
BUG=b:161259884
TEST=cros_workon_make --board=hatch --test update_engine
Change-Id: Ie37aa5da3cd8a0820e633f5ef426fb50e8a02838
Reviewed-on: https://chromium-review.googlesource.com/c/aosp/platform/system/update_engine/+/2491618
Tested-by: Vyshu Khota <vyshu@google.com>
Commit-Queue: Vyshu Khota <vyshu@google.com>
Reviewed-by: Amin Hassani <ahassani@chromium.org>
diff --git a/common/prefs_interface.h b/common/prefs_interface.h
index 1311cb4..866d0ca 100644
--- a/common/prefs_interface.h
+++ b/common/prefs_interface.h
@@ -80,6 +80,12 @@
// this key. Calling with non-existent keys does nothing.
virtual bool Delete(const std::string& key) = 0;
+ // Deletes the pref key from platform and given namespace subdirectories.
+ // Keys are matched against end of pref keys in each namespace.
+ // Returns true if all deletes were successful.
+ virtual bool Delete(const std::string& pref_key,
+ const std::vector<std::string>& nss) = 0;
+
// Creates a key which is part of a sub preference.
static std::string CreateSubKey(const std::vector<std::string>& ns_with_key);
@@ -98,6 +104,10 @@
// anymore for future Set*() and Delete() method calls.
virtual void RemoveObserver(const std::string& key,
ObserverInterface* observer) = 0;
+
+ protected:
+ // Key separator used to create sub key and get file names,
+ static const char kKeySeparator = '/';
};
} // namespace chromeos_update_engine