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rocksdb/tools/db_repl_stress.cc

130 lines
3.5 KiB

#include <cstdio>
#include "db/write_batch_internal.h"
#include "leveldb/db.h"
#include "leveldb/types.h"
#include "port/atomic_pointer.h"
#include "util/testutil.h"
// Run a thread to perform Put's.
// Another thread uses GetUpdatesSince API to keep getting the updates.
// options :
// --num_inserts = the num of inserts the first thread should perform.
// --wal_ttl = the wal ttl for the run.
using namespace leveldb;
struct DataPumpThread {
size_t no_records;
DB* db; // Assumption DB is Open'ed already.
};
static std::string RandomString(Random* rnd, int len) {
std::string r;
test::RandomString(rnd, len, &r);
return r;
}
static void DataPumpThreadBody(void* arg) {
DataPumpThread* t = reinterpret_cast<DataPumpThread*>(arg);
DB* db = t->db;
Random rnd(301);
size_t i = 0;
while(i++ < t->no_records) {
if(!db->Put(WriteOptions(), Slice(RandomString(&rnd, 500)),
Slice(RandomString(&rnd, 500))).ok()) {
fprintf(stderr, "Error in put\n");
exit(1);
}
}
}
struct ReplicationThread {
port::AtomicPointer stop;
DB* db;
volatile size_t no_read;
};
static void ReplicationThreadBody(void* arg) {
ReplicationThread* t = reinterpret_cast<ReplicationThread*>(arg);
DB* db = t->db;
unique_ptr<TransactionLogIterator> iter;
SequenceNumber currentSeqNum = 1;
while (t->stop.Acquire_Load() != nullptr) {
iter.reset();
Status s;
while(!db->GetUpdatesSince(currentSeqNum, &iter).ok()) {
if (t->stop.Acquire_Load() == nullptr) {
return;
}
}
fprintf(stderr, "Refreshing iterator\n");
for(;iter->Valid(); iter->Next(), t->no_read++, currentSeqNum++) {
BatchResult res = iter->GetBatch();
if (res.sequence != currentSeqNum) {
fprintf(stderr, "Missed a seq no. b/w %ld and %ld\n", currentSeqNum,
res.sequence);
exit(1);
}
}
}
}
int main(int argc, const char** argv) {
uint64_t FLAGS_num_inserts = 1000;
uint64_t FLAGS_WAL_ttl_seconds = 1000;
char junk;
long l;
for (int i = 1; i < argc; ++i) {
if (sscanf(argv[i], "--num_inserts=%ld%c", &l, &junk) == 1) {
FLAGS_num_inserts = l;
} else if (sscanf(argv[i], "--wal_ttl=%ld%c", &l, &junk) == 1) {
FLAGS_WAL_ttl_seconds = l;
} else {
fprintf(stderr, "Invalid Flag '%s'\n", argv[i]);
exit(1);
}
}
Env* env = Env::Default();
std::string default_db_path;
env->GetTestDirectory(&default_db_path);
default_db_path += "db_repl_stress";
Options options;
options.create_if_missing = true;
options.WAL_ttl_seconds = FLAGS_WAL_ttl_seconds;
DB* db;
DestroyDB(default_db_path, options);
Status s = DB::Open(options, default_db_path, &db);
if (!s.ok()) {
fprintf(stderr, "Could not open DB due to %s\n", s.ToString().c_str());
exit(1);
}
DataPumpThread dataPump;
dataPump.no_records = FLAGS_num_inserts;
dataPump.db = db;
env->StartThread(DataPumpThreadBody, &dataPump);
ReplicationThread replThread;
replThread.db = db;
replThread.no_read = 0;
replThread.stop.Release_Store(env); // store something to make it non-null.
env->StartThread(ReplicationThreadBody, &replThread);
while(replThread.no_read < FLAGS_num_inserts);
replThread.stop.Release_Store(nullptr);
if (replThread.no_read < dataPump.no_records) {
// no. read should be => than inserted.
fprintf(stderr, "No. of Record's written and read not same\nRead : %ld"
" Written : %ld\n", replThread.no_read, dataPump.no_records);
exit(1);
}
fprintf(stderr, "Successful!\n");
exit(0);
}