Adding upstream version 14.2.21.upstream/14.2.21upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

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());
+}