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-rw-r--r--src/rocksdb/tools/rdb/db_wrapper.cc525
1 files changed, 525 insertions, 0 deletions
diff --git a/src/rocksdb/tools/rdb/db_wrapper.cc b/src/rocksdb/tools/rdb/db_wrapper.cc
new file mode 100644
index 00000000..1ec9da1d
--- /dev/null
+++ b/src/rocksdb/tools/rdb/db_wrapper.cc
@@ -0,0 +1,525 @@
+#include <iostream>
+#include <memory>
+#include <vector>
+#include <v8.h>
+#include <node.h>
+
+#include "db/_wrapper.h"
+#include "rocksdb/db.h"
+#include "rocksdb/options.h"
+#include "rocksdb/slice.h"
+
+namespace {
+ void printWithBackSlashes(std::string str) {
+ for (std::string::size_type i = 0; i < str.size(); i++) {
+ if (str[i] == '\\' || str[i] == '"') {
+ std::cout << "\\";
+ }
+
+ std::cout << str[i];
+ }
+ }
+
+ bool has_key_for_array(Local<Object> obj, std::string key) {
+ return obj->Has(String::NewSymbol(key.c_str())) &&
+ obj->Get(String::NewSymbol(key.c_str()))->IsArray();
+ }
+}
+
+using namespace v8;
+
+
+Persistent<Function> DBWrapper::constructor;
+
+DBWrapper::DBWrapper() {
+ options_.IncreaseParallelism();
+ options_.OptimizeLevelStyleCompaction();
+ options_.disable_auto_compactions = true;
+ options_.create_if_missing = true;
+}
+
+DBWrapper::~DBWrapper() {
+ delete db_;
+}
+
+bool DBWrapper::HasFamilyNamed(std::string& name, DBWrapper* db) {
+ return db->columnFamilies_.find(name) != db->columnFamilies_.end();
+}
+
+
+void DBWrapper::Init(Handle<Object> exports) {
+ Local<FunctionTemplate> tpl = FunctionTemplate::New(New);
+ tpl->SetClassName(String::NewSymbol("DBWrapper"));
+ tpl->InstanceTemplate()->SetInternalFieldCount(8);
+ tpl->PrototypeTemplate()->Set(String::NewSymbol("open"),
+ FunctionTemplate::New(Open)->GetFunction());
+ tpl->PrototypeTemplate()->Set(String::NewSymbol("get"),
+ FunctionTemplate::New(Get)->GetFunction());
+ tpl->PrototypeTemplate()->Set(String::NewSymbol("put"),
+ FunctionTemplate::New(Put)->GetFunction());
+ tpl->PrototypeTemplate()->Set(String::NewSymbol("delete"),
+ FunctionTemplate::New(Delete)->GetFunction());
+ tpl->PrototypeTemplate()->Set(String::NewSymbol("dump"),
+ FunctionTemplate::New(Dump)->GetFunction());
+ tpl->PrototypeTemplate()->Set(String::NewSymbol("createColumnFamily"),
+ FunctionTemplate::New(CreateColumnFamily)->GetFunction());
+ tpl->PrototypeTemplate()->Set(String::NewSymbol("writeBatch"),
+ FunctionTemplate::New(WriteBatch)->GetFunction());
+ tpl->PrototypeTemplate()->Set(String::NewSymbol("compactRange"),
+ FunctionTemplate::New(CompactRange)->GetFunction());
+
+ constructor = Persistent<Function>::New(tpl->GetFunction());
+ exports->Set(String::NewSymbol("DBWrapper"), constructor);
+}
+
+Handle<Value> DBWrapper::Open(const Arguments& args) {
+ HandleScope scope;
+ DBWrapper* db_wrapper = ObjectWrap::Unwrap<DBWrapper>(args.This());
+
+ if (!(args[0]->IsString() &&
+ (args[1]->IsUndefined() || args[1]->IsArray()))) {
+ return scope.Close(Boolean::New(false));
+ }
+
+ std::string db_file = *v8::String::Utf8Value(args[0]->ToString());
+
+ std::vector<std::string> cfs = { rocksdb::kDefaultColumnFamilyName };
+
+ if (!args[1]->IsUndefined()) {
+ Handle<Array> array = Handle<Array>::Cast(args[1]);
+ for (uint i = 0; i < array->Length(); i++) {
+ if (!array->Get(i)->IsString()) {
+ return scope.Close(Boolean::New(false));
+ }
+
+ cfs.push_back(*v8::String::Utf8Value(array->Get(i)->ToString()));
+ }
+ }
+
+ if (cfs.size() == 1) {
+ db_wrapper->status_ = rocksdb::DB::Open(
+ db_wrapper->options_, db_file, &db_wrapper->db_);
+
+ return scope.Close(Boolean::New(db_wrapper->status_.ok()));
+ }
+
+ std::vector<rocksdb::ColumnFamilyDescriptor> families;
+
+ for (std::vector<int>::size_type i = 0; i < cfs.size(); i++) {
+ families.push_back(rocksdb::ColumnFamilyDescriptor(
+ cfs[i], rocksdb::ColumnFamilyOptions()));
+ }
+
+ std::vector<rocksdb::ColumnFamilyHandle*> handles;
+ db_wrapper->status_ = rocksdb::DB::Open(
+ db_wrapper->options_, db_file, families, &handles, &db_wrapper->db_);
+
+ if (!db_wrapper->status_.ok()) {
+ return scope.Close(Boolean::New(db_wrapper->status_.ok()));
+ }
+
+ for (std::vector<int>::size_type i = 0; i < handles.size(); i++) {
+ db_wrapper->columnFamilies_[cfs[i]] = handles[i];
+ }
+
+ return scope.Close(Boolean::New(true));
+}
+
+
+Handle<Value> DBWrapper::New(const Arguments& args) {
+ HandleScope scope;
+ Handle<Value> to_return;
+
+ if (args.IsConstructCall()) {
+ DBWrapper* db_wrapper = new DBWrapper();
+ db_wrapper->Wrap(args.This());
+
+ return args.This();
+ }
+
+ const int argc = 0;
+ Local<Value> argv[0] = {};
+
+ return scope.Close(constructor->NewInstance(argc, argv));
+}
+
+Handle<Value> DBWrapper::Get(const Arguments& args) {
+ HandleScope scope;
+
+ if (!(args[0]->IsString() &&
+ (args[1]->IsUndefined() || args[1]->IsString()))) {
+ return scope.Close(Null());
+ }
+
+ DBWrapper* db_wrapper = ObjectWrap::Unwrap<DBWrapper>(args.This());
+ std::string key = *v8::String::Utf8Value(args[0]->ToString());
+ std::string cf = *v8::String::Utf8Value(args[1]->ToString());
+ std::string value;
+
+ if (args[1]->IsUndefined()) {
+ db_wrapper->status_ = db_wrapper->db_->Get(
+ rocksdb::ReadOptions(), key, &value);
+ } else if (db_wrapper->HasFamilyNamed(cf, db_wrapper)) {
+ db_wrapper->status_ = db_wrapper->db_->Get(
+ rocksdb::ReadOptions(), db_wrapper->columnFamilies_[cf], key, &value);
+ } else {
+ return scope.Close(Null());
+ }
+
+ Handle<Value> v = db_wrapper->status_.ok() ?
+ String::NewSymbol(value.c_str()) : Null();
+
+ return scope.Close(v);
+}
+
+Handle<Value> DBWrapper::Put(const Arguments& args) {
+ HandleScope scope;
+
+ if (!(args[0]->IsString() && args[1]->IsString() &&
+ (args[2]->IsUndefined() || args[2]->IsString()))) {
+ return scope.Close(Boolean::New(false));
+ }
+
+ DBWrapper* db_wrapper = ObjectWrap::Unwrap<DBWrapper>(args.This());
+ std::string key = *v8::String::Utf8Value(args[0]->ToString());
+ std::string value = *v8::String::Utf8Value(args[1]->ToString());
+ std::string cf = *v8::String::Utf8Value(args[2]->ToString());
+
+ if (args[2]->IsUndefined()) {
+ db_wrapper->status_ = db_wrapper->db_->Put(
+ rocksdb::WriteOptions(), key, value
+ );
+ } else if (db_wrapper->HasFamilyNamed(cf, db_wrapper)) {
+ db_wrapper->status_ = db_wrapper->db_->Put(
+ rocksdb::WriteOptions(),
+ db_wrapper->columnFamilies_[cf],
+ key,
+ value
+ );
+ } else {
+ return scope.Close(Boolean::New(false));
+ }
+
+
+ return scope.Close(Boolean::New(db_wrapper->status_.ok()));
+}
+
+Handle<Value> DBWrapper::Delete(const Arguments& args) {
+ HandleScope scope;
+
+ if (!args[0]->IsString()) {
+ return scope.Close(Boolean::New(false));
+ }
+
+ DBWrapper* db_wrapper = ObjectWrap::Unwrap<DBWrapper>(args.This());
+ std::string arg0 = *v8::String::Utf8Value(args[0]->ToString());
+ std::string arg1 = *v8::String::Utf8Value(args[1]->ToString());
+
+ if (args[1]->IsUndefined()) {
+ db_wrapper->status_ = db_wrapper->db_->Delete(
+ rocksdb::WriteOptions(), arg0);
+ } else {
+ if (!db_wrapper->HasFamilyNamed(arg1, db_wrapper)) {
+ return scope.Close(Boolean::New(false));
+ }
+ db_wrapper->status_ = db_wrapper->db_->Delete(
+ rocksdb::WriteOptions(), db_wrapper->columnFamilies_[arg1], arg0);
+ }
+
+ return scope.Close(Boolean::New(db_wrapper->status_.ok()));
+}
+
+Handle<Value> DBWrapper::Dump(const Arguments& args) {
+ HandleScope scope;
+ std::unique_ptr<rocksdb::Iterator> iterator;
+ DBWrapper* db_wrapper = ObjectWrap::Unwrap<DBWrapper>(args.This());
+ std::string arg0 = *v8::String::Utf8Value(args[0]->ToString());
+
+ if (args[0]->IsUndefined()) {
+ iterator.reset(db_wrapper->db_->NewIterator(rocksdb::ReadOptions()));
+ } else {
+ if (!db_wrapper->HasFamilyNamed(arg0, db_wrapper)) {
+ return scope.Close(Boolean::New(false));
+ }
+
+ iterator.reset(db_wrapper->db_->NewIterator(
+ rocksdb::ReadOptions(), db_wrapper->columnFamilies_[arg0]));
+ }
+
+ iterator->SeekToFirst();
+
+ while (iterator->Valid()) {
+ std::cout << "\"";
+ printWithBackSlashes(iterator->key().ToString());
+ std::cout << "\" => \"";
+ printWithBackSlashes(iterator->value().ToString());
+ std::cout << "\"\n";
+ iterator->Next();
+ }
+
+ return scope.Close(Boolean::New(true));
+}
+
+Handle<Value> DBWrapper::CreateColumnFamily(const Arguments& args) {
+ HandleScope scope;
+
+ if (!args[0]->IsString()) {
+ return scope.Close(Boolean::New(false));
+ }
+
+ DBWrapper* db_wrapper = ObjectWrap::Unwrap<DBWrapper>(args.This());
+ std::string cf_name = *v8::String::Utf8Value(args[0]->ToString());
+
+ if (db_wrapper->HasFamilyNamed(cf_name, db_wrapper)) {
+ return scope.Close(Boolean::New(false));
+ }
+
+ rocksdb::ColumnFamilyHandle* cf;
+ db_wrapper->status_ = db_wrapper->db_->CreateColumnFamily(
+ rocksdb::ColumnFamilyOptions(), cf_name, &cf);
+
+ if (!db_wrapper->status_.ok()) {
+ return scope.Close(Boolean::New(false));
+ }
+
+ db_wrapper->columnFamilies_[cf_name] = cf;
+
+ return scope.Close(Boolean::New(true));
+}
+
+bool DBWrapper::AddToBatch(rocksdb::WriteBatch& batch, bool del,
+ Handle<Array> array) {
+ Handle<Array> put_pair;
+ for (uint i = 0; i < array->Length(); i++) {
+ if (del) {
+ if (!array->Get(i)->IsString()) {
+ return false;
+ }
+
+ batch.Delete(*v8::String::Utf8Value(array->Get(i)->ToString()));
+ continue;
+ }
+
+ if (!array->Get(i)->IsArray()) {
+ return false;
+ }
+
+ put_pair = Handle<Array>::Cast(array->Get(i));
+
+ if (!put_pair->Get(0)->IsString() || !put_pair->Get(1)->IsString()) {
+ return false;
+ }
+
+ batch.Put(
+ *v8::String::Utf8Value(put_pair->Get(0)->ToString()),
+ *v8::String::Utf8Value(put_pair->Get(1)->ToString()));
+ }
+
+ return true;
+}
+
+bool DBWrapper::AddToBatch(rocksdb::WriteBatch& batch, bool del,
+ Handle<Array> array, DBWrapper* db_wrapper,
+ std::string cf) {
+ Handle<Array> put_pair;
+ for (uint i = 0; i < array->Length(); i++) {
+ if (del) {
+ if (!array->Get(i)->IsString()) {
+ return false;
+ }
+
+ batch.Delete(
+ db_wrapper->columnFamilies_[cf],
+ *v8::String::Utf8Value(array->Get(i)->ToString()));
+ continue;
+ }
+
+ if (!array->Get(i)->IsArray()) {
+ return false;
+ }
+
+ put_pair = Handle<Array>::Cast(array->Get(i));
+
+ if (!put_pair->Get(0)->IsString() || !put_pair->Get(1)->IsString()) {
+ return false;
+ }
+
+ batch.Put(
+ db_wrapper->columnFamilies_[cf],
+ *v8::String::Utf8Value(put_pair->Get(0)->ToString()),
+ *v8::String::Utf8Value(put_pair->Get(1)->ToString()));
+ }
+
+ return true;
+}
+
+Handle<Value> DBWrapper::WriteBatch(const Arguments& args) {
+ HandleScope scope;
+
+ if (!args[0]->IsArray()) {
+ return scope.Close(Boolean::New(false));
+ }
+
+ DBWrapper* db_wrapper = ObjectWrap::Unwrap<DBWrapper>(args.This());
+ Handle<Array> sub_batches = Handle<Array>::Cast(args[0]);
+ Local<Object> sub_batch;
+ rocksdb::WriteBatch batch;
+ bool well_formed;
+
+ for (uint i = 0; i < sub_batches->Length(); i++) {
+ if (!sub_batches->Get(i)->IsObject()) {
+ return scope.Close(Boolean::New(false));
+ }
+ sub_batch = sub_batches->Get(i)->ToObject();
+
+ if (sub_batch->Has(String::NewSymbol("column_family"))) {
+ if (!has_key_for_array(sub_batch, "put") &&
+ !has_key_for_array(sub_batch, "delete")) {
+ return scope.Close(Boolean::New(false));
+ }
+
+ well_formed = db_wrapper->AddToBatch(
+ batch, false,
+ Handle<Array>::Cast(sub_batch->Get(String::NewSymbol("put"))),
+ db_wrapper, *v8::String::Utf8Value(sub_batch->Get(
+ String::NewSymbol("column_family"))));
+
+ well_formed = db_wrapper->AddToBatch(
+ batch, true,
+ Handle<Array>::Cast(sub_batch->Get(String::NewSymbol("delete"))),
+ db_wrapper, *v8::String::Utf8Value(sub_batch->Get(
+ String::NewSymbol("column_family"))));
+ } else {
+ well_formed = db_wrapper->AddToBatch(
+ batch, false,
+ Handle<Array>::Cast(sub_batch->Get(String::NewSymbol("put"))));
+ well_formed = db_wrapper->AddToBatch(
+ batch, true,
+ Handle<Array>::Cast(sub_batch->Get(String::NewSymbol("delete"))));
+
+ if (!well_formed) {
+ return scope.Close(Boolean::New(false));
+ }
+ }
+ }
+
+ db_wrapper->status_ = db_wrapper->db_->Write(rocksdb::WriteOptions(), &batch);
+
+ return scope.Close(Boolean::New(db_wrapper->status_.ok()));
+}
+
+Handle<Value> DBWrapper::CompactRangeDefault(const Arguments& args) {
+ HandleScope scope;
+
+ DBWrapper* db_wrapper = ObjectWrap::Unwrap<DBWrapper>(args.This());
+ rocksdb::Slice begin = *v8::String::Utf8Value(args[0]->ToString());
+ rocksdb::Slice end = *v8::String::Utf8Value(args[1]->ToString());
+ db_wrapper->status_ = db_wrapper->db_->CompactRange(&end, &begin);
+
+ return scope.Close(Boolean::New(db_wrapper->status_.ok()));
+}
+
+Handle<Value> DBWrapper::CompactColumnFamily(const Arguments& args) {
+ HandleScope scope;
+
+ DBWrapper* db_wrapper = ObjectWrap::Unwrap<DBWrapper>(args.This());
+ rocksdb::Slice begin = *v8::String::Utf8Value(args[0]->ToString());
+ rocksdb::Slice end = *v8::String::Utf8Value(args[1]->ToString());
+ std::string cf = *v8::String::Utf8Value(args[2]->ToString());
+ db_wrapper->status_ = db_wrapper->db_->CompactRange(
+ db_wrapper->columnFamilies_[cf], &begin, &end);
+
+ return scope.Close(Boolean::New(db_wrapper->status_.ok()));
+}
+
+Handle<Value> DBWrapper::CompactOptions(const Arguments& args) {
+ HandleScope scope;
+
+ if (!args[2]->IsObject()) {
+ return scope.Close(Boolean::New(false));
+ }
+
+ DBWrapper* db_wrapper = ObjectWrap::Unwrap<DBWrapper>(args.This());
+ rocksdb::Slice begin = *v8::String::Utf8Value(args[0]->ToString());
+ rocksdb::Slice end = *v8::String::Utf8Value(args[1]->ToString());
+ Local<Object> options = args[2]->ToObject();
+ int target_level = -1, target_path_id = 0;
+
+ if (options->Has(String::NewSymbol("target_level")) &&
+ options->Get(String::NewSymbol("target_level"))->IsInt32()) {
+ target_level = (int)(options->Get(
+ String::NewSymbol("target_level"))->ToInt32()->Value());
+
+ if (options->Has(String::NewSymbol("target_path_id")) ||
+ options->Get(String::NewSymbol("target_path_id"))->IsInt32()) {
+ target_path_id = (int)(options->Get(
+ String::NewSymbol("target_path_id"))->ToInt32()->Value());
+ }
+ }
+
+ db_wrapper->status_ = db_wrapper->db_->CompactRange(
+ &begin, &end, true, target_level, target_path_id
+ );
+
+ return scope.Close(Boolean::New(db_wrapper->status_.ok()));
+}
+
+Handle<Value> DBWrapper::CompactAll(const Arguments& args) {
+ HandleScope scope;
+
+ if (!args[2]->IsObject() || !args[3]->IsString()) {
+ return scope.Close(Boolean::New(false));
+ }
+
+ DBWrapper* db_wrapper = ObjectWrap::Unwrap<DBWrapper>(args.This());
+ rocksdb::Slice begin = *v8::String::Utf8Value(args[0]->ToString());
+ rocksdb::Slice end = *v8::String::Utf8Value(args[1]->ToString());
+ Local<Object> options = args[2]->ToObject();
+ std::string cf = *v8::String::Utf8Value(args[3]->ToString());
+
+ int target_level = -1, target_path_id = 0;
+
+ if (options->Has(String::NewSymbol("target_level")) &&
+ options->Get(String::NewSymbol("target_level"))->IsInt32()) {
+ target_level = (int)(options->Get(
+ String::NewSymbol("target_level"))->ToInt32()->Value());
+
+ if (options->Has(String::NewSymbol("target_path_id")) ||
+ options->Get(String::NewSymbol("target_path_id"))->IsInt32()) {
+ target_path_id = (int)(options->Get(
+ String::NewSymbol("target_path_id"))->ToInt32()->Value());
+ }
+ }
+
+ db_wrapper->status_ = db_wrapper->db_->CompactRange(
+ db_wrapper->columnFamilies_[cf], &begin, &end, true, target_level,
+ target_path_id);
+
+ return scope.Close(Boolean::New(db_wrapper->status_.ok()));
+}
+
+Handle<Value> DBWrapper::CompactRange(const Arguments& args) {
+ HandleScope scope;
+
+ if (!args[0]->IsString() || !args[1]->IsString()) {
+ return scope.Close(Boolean::New(false));
+ }
+
+ switch(args.Length()) {
+ case 2:
+ return CompactRangeDefault(args);
+ case 3:
+ return args[2]->IsString() ? CompactColumnFamily(args) :
+ CompactOptions(args);
+ default:
+ return CompactAll(args);
+ }
+}
+
+Handle<Value> DBWrapper::Close(const Arguments& args) {
+ HandleScope scope;
+
+ delete ObjectWrap::Unwrap<DBWrapper>(args.This());
+
+ return scope.Close(Null());
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-23 04:56:22 +0000