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sst_dump: Add --output_hex option and output the same format as ldb dump 

Summary: Now sst_dump has the same option --output_hex as "ldb dump" and also share the same output format.  So we can do "sst_dump ... | ldb load ..." for an experiment.

Test Plan:
[zshao@dev485 ~/git/rocksdb] ./sst_dump --file=/data/users/zshao/test_leveldb/000005.sst  --output_hex | head -n 2
0000027F4FBE00000101000000000000 ==> D901000000000000000057596F7520726563656976656420746F6461792773207370656369616C20676966742120436C69636B2041636365707420746F207669657720796F75722047696674206265666F72652069742064697361707065617273210000000000000000
000007F9C2D400000102000000000000 ==> 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

Reviewers: dhruba, sheki, emayanke

Reviewed By: dhruba

CC: leveldb

Differential Revision: https://reviews.facebook.net/D7587
This commit is contained in:
Zheng Shao 2012-12-20 23:49:32 -08:00
parent 70f0f50731
commit 01d57a33fe
1 changed files with 19 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
tools/sst_dump.cc
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@ -22,7 +22,9 @@ namespace leveldb {
class SstFileReader {
public:
SstFileReader(std::string file_name, bool verify_checksum = false);
SstFileReader(std::string file_name,
bool verify_checksum = false,
bool output_hex = false);
Status ReadSequential(bool print_kv, uint64_t read_num = -1);
uint64_t GetReadNumber() { return read_num_; }
@ -31,10 +33,14 @@ private:
std::string file_name_;
uint64_t read_num_;
bool verify_checksum_;
bool output_hex_;
};
SstFileReader::SstFileReader(std::string file_path, bool verify_checksum)
:file_name_(file_path), read_num_(0), verify_checksum_(verify_checksum) {
SstFileReader::SstFileReader(std::string file_path,
bool verify_checksum,
bool output_hex)
:file_name_(file_path), read_num_(0), verify_checksum_(verify_checksum),
output_hex_(output_hex) {
}
Status SstFileReader::ReadSequential(bool print_kv, uint64_t read_num)
@ -62,8 +68,9 @@ Status SstFileReader::ReadSequential(bool print_kv, uint64_t read_num)
if (read_num > 0 && i > read_num)
break;
if (print_kv) {
fprintf(stdout, "%s : %s\n",
key.ToString().c_str(), value.ToString().c_str());
fprintf(stdout, "%s ==> %s\n",
key.ToString(output_hex_).c_str(),
value.ToString(output_hex_).c_str());
}
}
@ -80,6 +87,7 @@ static void print_help() {
fprintf(stderr,
"sst_dump [--command=check|scan] [--verify_checksum] "
"--file=data_dir_OR_sst_file"
" [--output_hex]"
" [--read_num=NUM]\n");
}
@ -92,10 +100,13 @@ int main(int argc, char** argv) {
char junk;
uint64_t n;
bool verify_checksum = false;
bool output_hex = false;
for (int i = 1; i < argc; i++)
{
if (strncmp(argv[i], "--file=", 7) == 0) {
dir_or_file = argv[i] + 7;
} else if (strncmp(argv[i], "--output_hex", 12) == 0) {
output_hex = true;
} else if (sscanf(argv[i], "--read_num=%ld%c", &n, &junk) == 1) {
read_num = n;
} else if (strncmp(argv[i], "--verify_checksum",
@ -133,9 +144,10 @@ int main(int argc, char** argv) {
continue;
}
if(dir) {
filename = dir_or_file + filename;
filename = std::string(dir_or_file) + "//" + filename;
}
leveldb::SstFileReader reader(filename, verify_checksum);
leveldb::SstFileReader reader(filename, verify_checksum,
output_hex);
leveldb::Status st;
// scan all files in give file path.
if (command == "" || command == "scan" || command == "check") {