Rename EventLoggerHelpers EventHelpers

Summary:
Rename EventLoggerHelpers EventHelpers, as it's going to include
all event-related helper functions instead of EventLogger only stuffs.

Test Plan: make

Reviewers: sdong, rven, anthony

Reviewed By: anthony

Subscribers: dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D39093

db/compaction_job.cc

@@ -22,7 +22,7 @@
 #include "db/builder.h"
 #include "db/db_iter.h"
 #include "db/dbformat.h"
-#include "db/event_logger_helpers.h"
+#include "db/event_helpers.h"
 #include "db/filename.h"
 #include "db/log_reader.h"
 #include "db/log_writer.h"
@@ -1063,9 +1063,9 @@ Status CompactionJob::FinishCompactionOutputFile(Iterator* input) {
           " keys, %" PRIu64 " bytes",
           cfd->GetName().c_str(), job_id_, output_number, current_entries,
           current_bytes);
-      EventLoggerHelpers::LogTableFileCreation(event_logger_, job_id_,
-                                               output_number, current_bytes,
-                                               table_properties);
+      EventHelpers::LogTableFileCreation(event_logger_, job_id_,
+                                         output_number, current_bytes,
+                                         table_properties);
     }
   }
   return s;

db/db_impl.cc

@@ -31,7 +31,7 @@
 #include "db/compaction_job.h"
 #include "db/db_iter.h"
 #include "db/dbformat.h"
-#include "db/event_logger_helpers.h"
+#include "db/event_helpers.h"
 #include "db/filename.h"
 #include "db/job_context.h"
 #include "db/log_reader.h"
@@ -1168,7 +1168,7 @@ Status DBImpl::WriteLevel0TableForRecovery(int job_id, ColumnFamilyData* cfd,
 
       // output to event logger
       if (s.ok()) {
-        EventLoggerHelpers::LogTableFileCreation(
+        EventHelpers::LogTableFileCreation(
             &event_logger_, job_id, meta.fd.GetNumber(), meta.fd.GetFileSize(),
             table_properties);
       }

db/event_helpers.cc

@@ -3,7 +3,7 @@
 //  LICENSE file in the root directory of this source tree. An additional grant
 //  of patent rights can be found in the PATENTS file in the same directory.
 
-#include "db/event_logger_helpers.h"
+#include "db/event_helpers.h"
 
 namespace rocksdb {
 
@@ -11,13 +11,13 @@ namespace {
 inline double SafeDivide(double a, double b) { return b == 0.0 ? 0 : a / b; }
 }  // namespace
 
-void EventLoggerHelpers::AppendCurrentTime(JSONWriter* jwriter) {
+void EventHelpers::AppendCurrentTime(JSONWriter* jwriter) {
   *jwriter << "time_micros"
            << std::chrono::duration_cast<std::chrono::microseconds>(
                   std::chrono::system_clock::now().time_since_epoch()).count();
 }
 
-void EventLoggerHelpers::LogTableFileCreation(
+void EventHelpers::LogTableFileCreation(
     EventLogger* event_logger, int job_id, uint64_t file_number,
     uint64_t file_size, const TableProperties& table_properties) {
   JSONWriter jwriter;

db/event_helpers.h

@@ -9,7 +9,7 @@
 
 namespace rocksdb {
 
-class EventLoggerHelpers {
+class EventHelpers {
  public:
   static void AppendCurrentTime(JSONWriter* json_writer);
   static void LogTableFileCreation(EventLogger* event_logger, int job_id,

db/flush_job.cc

@@ -20,7 +20,7 @@
 #include "db/builder.h"
 #include "db/db_iter.h"
 #include "db/dbformat.h"
-#include "db/event_logger_helpers.h"
+#include "db/event_helpers.h"
 #include "db/filename.h"
 #include "db/log_reader.h"
 #include "db/log_writer.h"
@@ -250,7 +250,7 @@ Status FlushJob::WriteLevel0Table(const autovector<MemTable*>& mems,
 
     // output to event logger
     if (s.ok()) {
-      EventLoggerHelpers::LogTableFileCreation(
+      EventHelpers::LogTableFileCreation(
           event_logger_, job_context_->job_id, meta.fd.GetNumber(),
           meta.fd.GetFileSize(), table_properties);
     }

src.mk

@@ -14,7 +14,7 @@ LIB_SOURCES =                                                   \
   db/db_impl_experimental.cc                                    \
   db/db_iter.cc                                                 \
   db/experimental.cc                                            \
-  db/event_logger_helpers.cc                                    \
+  db/event_helpers.cc                                           \
   db/file_indexer.cc                                            \
   db/filename.cc                                                \
   db/flush_job.cc                                               \