Validate the priority of an LED is same
Need to make sure that the priority of a particular LED is the same
across all groups, it needs to throw the std::runtime_error if not
the same.
Tested: Manually changed the JSON file to have priority of a particular
LED different across groups and saw ledManager throw a runtime exception
and failed to run.
Signed-off-by: George Liu <liuxiwei@inspur.com>
Change-Id: I9d3e788dd86defb9a781dc958976b51ec7d3fd19
diff --git a/json-config.hpp b/json-config.hpp
index d47bfd5..e0448c5 100644
--- a/json-config.hpp
+++ b/json-config.hpp
@@ -15,6 +15,10 @@
using LedAction = std::set<phosphor::led::Layout::LedAction>;
using LedMap = std::map<std::string, LedAction>;
+// Priority for a particular LED needs to stay SAME across all groups
+// phosphor::led::Layout::Action can only be one of `Blink` and `On`
+using PriorityMap = std::map<std::string, phosphor::led::Layout::Action>;
+
/** @brief Parse LED JSON file and output Json object
*
* @param[in] path - path of LED JSON file
@@ -60,6 +64,39 @@
: phosphor::led::Layout::On;
}
+/** @brief Validate the Priority of an LED is same across ALL groups
+ *
+ * @param[in] name - led name member of each group
+ * @param[in] priority - member priority of each group
+ * @param[out] priorityMap - std::map, key:name, value:priority
+ *
+ * @return
+ */
+void validatePriority(const std::string& name,
+ const phosphor::led::Layout::Action& priority,
+ PriorityMap& priorityMap)
+{
+ using namespace phosphor::logging;
+
+ auto iter = priorityMap.find(name);
+ if (iter == priorityMap.end())
+ {
+ priorityMap.emplace(name, priority);
+ return;
+ }
+
+ if (iter->second != priority)
+ {
+ log<level::ERR>("Priority of LED is not same across all",
+ entry("Name=%s", name.c_str()),
+ entry(" Old Priority=%d", iter->second),
+ entry(" New priority=%d", priority));
+
+ throw std::runtime_error(
+ "Priority of at least one LED is not same across groups");
+ }
+}
+
/** @brief Load JSON config and return led map
*
* @return LedMap - Generated an std::map of LedAction
@@ -67,12 +104,13 @@
const LedMap loadJsonConfig(const fs::path& path)
{
LedMap ledMap{};
+ PriorityMap priorityMap{};
// define the default JSON as empty
const Json empty{};
auto json = readJson(path);
-
auto leds = json.value("leds", empty);
+
for (const auto& entry : leds)
{
fs::path tmpPath(std::string{OBJPATH});
@@ -90,6 +128,11 @@
// Since only have Blink/On and default priority is Blink
auto priority = getAction(member.value("Priority", "Blink"));
+
+ // Same LEDs can be part of multiple groups. However, their
+ // priorities across groups need to match.
+ validatePriority(name, priority, priorityMap);
+
phosphor::led::Layout::LedAction ledAction{name, action, dutyOn,
period, priority};
ledActions.emplace(ledAction);