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Deserialize custom Statistics object in db_bench

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Summary:
Added -statistics_string to deserialize a Statistics object using the factory functions registered by applications.
Closes https://github.com/facebook/rocksdb/pull/1812

Differential Revision: D4469811

Pulled By: ajkr

fbshipit-source-id: 2d80862
This commit is contained in:
Andrew Kryczka 2017-01-26 15:18:07 -08:00 committed by Facebook Github Bot
parent 3b35134e4b
commit 37d4a79e99
1 changed files with 19 additions and 0 deletions
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19
tools/db_bench_tool.cc
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@ -459,6 +459,7 @@ DEFINE_bool(verify_checksum, false, "Verify checksum for every block read"
" from storage");
DEFINE_bool(statistics, false, "Database statistics");
DEFINE_string(statistics_string, "", "Serialized statistics string");
static class std::shared_ptr<rocksdb::Statistics> dbstats;
DEFINE_int64(writes, -1, "Number of write operations to do. If negative, do"
@ -4878,6 +4879,24 @@ int db_bench_tool(int argc, char** argv) {
ParseCommandLineFlags(&argc, &argv, true);
FLAGS_compaction_style_e = (rocksdb::CompactionStyle) FLAGS_compaction_style;
#ifndef ROCKSDB_LITE
if (FLAGS_statistics && !FLAGS_statistics_string.empty()) {
fprintf(stderr,
"Cannot provide both --statistics and --statistics_string.\n");
exit(1);
}
if (!FLAGS_statistics_string.empty()) {
std::unique_ptr<Statistics> custom_stats_guard;
dbstats.reset(NewCustomObject<Statistics>(FLAGS_statistics_string,
&custom_stats_guard));
custom_stats_guard.release();
if (dbstats == nullptr) {
fprintf(stderr, "No Statistics registered matching string: %s\n",
FLAGS_statistics_string.c_str());
exit(1);
}
}
#endif // ROCKSDB_LITE
if (FLAGS_statistics) {
dbstats = rocksdb::CreateDBStatistics();
}