LogService: Increase dump timestamp precision

This is a follow-on to "LogService: Increase Fault Log timestamp
precision" [1]. Since microsecond precision timestamp support for
other dump types (in addition to FaultLog) have recently been added in
phosphor-debug-collector (see "Populate timestamps with microsecond
precision" [2]), we now update bmcweb to expose these timestamps with
microsecond precision.

Dump entry "Created" timestamps are based on the "Elapsed" property of
the D-Bus interface xyz.openbmc_project.Time.EpochTime [3], which is
defined as time elapsed since the epoch in microseconds.

Client impact: Dump entry "Created" timestamps are shown with
microsecond precision instead of second precision, for entries of all
dump types (not just FaultLog).

Tested:
Forced creation of a system dump entry from BMC console:
```
busctl call xyz.openbmc_project.Dump.Manager  /xyz/openbmc_project/dump/system xyz.openbmc_project.Dump.NewDump Notify ut 1 2
```

Retrieved the entry individually and as part of its collection:
```
curl -k -H "X-Auth-Token: $token" -X GET http://${bmc}/redfish/v1/Systems/system/LogServices/Dump/Entries/1
curl -k -H "X-Auth-Token: $token" -X GET http://${bmc}/redfish/v1/Systems/system/LogServices/Dump/Entries
```

Before change: `"Created": "2022-10-25T22:56:13+00:00",`
After change:  `"Created": "2022-10-25T22:56:13.271157+00:00",`

Redfish Service Validator passed on the following URI trees:
/redfish/v1/Managers/bmc/LogServices/Dump/Entries
/redfish/v1/Managers/bmc/LogServices/FaultLog/Entries
/redfish/v1/Systems/system/LogServices/Dump/Entries

[1] https://github.com/openbmc/bmcweb/commit/c6fecdabd58b4c380caf1b83801ad4eb54922fff
[2] https://github.com/openbmc/phosphor-debug-collector/commit/c0ab9d43d5e19123cca1a1592ee07fc064b84199
[3] https://github.com/openbmc/phosphor-dbus-interfaces/blob/master/yaml/xyz/openbmc_project/Time/EpochTime.interface.yaml

Signed-off-by: Claire Weinan <cweinan@google.com>
Change-Id: Ia1682d09cf196c63da7d236df31695be5a5ad34b

1 files changed, 4 insertions, 20 deletions

diff --git a/redfish-core/lib/log_services.hpp b/redfish-core/lib/log_services.hpp
index 5e732fb83f..92954861d6 100644
--- a/redfish-core/lib/log_services.hpp
+++ b/redfish-core/lib/log_services.hpp
@@ -507,25 +507,18 @@ inline void
             thisEntry["Id"] = entryID;
             thisEntry["EntryType"] = "Event";
             thisEntry["Name"] = dumpType + " Dump Entry";
+            thisEntry["Created"] =
+                redfish::time_utils::getDateTimeUintUs(timestampUs);
 
             if (dumpType == "BMC")
             {
-                thisEntry["Created"] = redfish::time_utils::getDateTimeUint(
-                    timestampUs / 1000 / 1000);
                 thisEntry["DiagnosticDataType"] = "Manager";
                 thisEntry["AdditionalDataURI"] =
                     entriesPath + entryID + "/attachment";
                 thisEntry["AdditionalDataSizeBytes"] = size;
             }
-            else if (dumpType == "FaultLog")
-            {
-                thisEntry["Created"] =
-                    redfish::time_utils::getDateTimeUintUs(timestampUs);
-            }
             else if (dumpType == "System")
             {
-                thisEntry["Created"] = redfish::time_utils::getDateTimeUint(
-                    timestampUs / 1000 / 1000);
                 thisEntry["DiagnosticDataType"] = "OEM";
                 thisEntry["OEMDiagnosticDataType"] = "System";
                 thisEntry["AdditionalDataURI"] =
@@ -599,27 +592,18 @@ inline void
             asyncResp->res.jsonValue["Id"] = entryID;
             asyncResp->res.jsonValue["EntryType"] = "Event";
             asyncResp->res.jsonValue["Name"] = dumpType + " Dump Entry";
+            asyncResp->res.jsonValue["Created"] =
+                redfish::time_utils::getDateTimeUintUs(timestampUs);
 
             if (dumpType == "BMC")
             {
-                asyncResp->res.jsonValue["Created"] =
-                    redfish::time_utils::getDateTimeUint(timestampUs / 1000 /
-                                                         1000);
                 asyncResp->res.jsonValue["DiagnosticDataType"] = "Manager";
                 asyncResp->res.jsonValue["AdditionalDataURI"] =
                     entriesPath + entryID + "/attachment";
                 asyncResp->res.jsonValue["AdditionalDataSizeBytes"] = size;
             }
-            else if (dumpType == "FaultLog")
-            {
-                asyncResp->res.jsonValue["Created"] =
-                    redfish::time_utils::getDateTimeUintUs(timestampUs);
-            }
             else if (dumpType == "System")
             {
-                asyncResp->res.jsonValue["Created"] =
-                    redfish::time_utils::getDateTimeUint(timestampUs / 1000 /
-                                                         1000);
                 asyncResp->res.jsonValue["DiagnosticDataType"] = "OEM";
                 asyncResp->res.jsonValue["OEMDiagnosticDataType"] = "System";
                 asyncResp->res.jsonValue["AdditionalDataURI"] =