PEL: Capture the journal in UserData sections
If a PEL message registry entry has a 'JournalCapture' section, capture
the listed portions of the journal in UserData sections for that error.
If the JSON looks like:
"JournalCapture": {
"NumLines": 30
}
Then the code will capture the previous 30 lines from the journal into a
single UserData section.
If the JSON looks like:
"JournalCapture":
{
"Sections": [
{
"SyslogID": "phosphor-bmc-state-manager",
"NumLines": 20
},
{
"SyslogID": "phosphor-log-manager",
"NumLines": 15
}
]
}
Then the code will create two UserData sections, the first with the most
recent 20 lines from phosphor-bmc-state-manager, and the second with 15
lines from phosphor-log-manager.
If a section would cause the PEL to exceed its maximum size of 16KB, it
will be dropped. While the UserData class does have a shrink() method,
it prunes data from the end, which would cause the most recent journal
entries to be removed, which could be misleading.
Signed-off-by: Matt Spinler <spinler@us.ibm.com>
Change-Id: I2ecbd8002b0e7087eb166a1219c6ab9da14a122a
diff --git a/extensions/openpower-pels/journal.hpp b/extensions/openpower-pels/journal.hpp
index 1261e32..620ce50 100644
--- a/extensions/openpower-pels/journal.hpp
+++ b/extensions/openpower-pels/journal.hpp
@@ -32,6 +32,11 @@
*/
virtual std::vector<std::string> getMessages(const std::string& syslogID,
size_t maxMessages) const = 0;
+
+ /**
+ * @brief Call journalctl --sync to write unwritten journal data to disk
+ */
+ virtual void sync() const = 0;
};
/**
@@ -60,6 +65,11 @@
std::vector<std::string> getMessages(const std::string& syslogID,
size_t maxMessages) const override;
+ /**
+ * @brief Call journalctl --sync to write unwritten journal data to disk
+ */
+ void sync() const override;
+
private:
/**
* @brief Gets a field from the current journal entry