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1719 lines (1450 loc) · 62.3 KB
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/*
Copyright (c) 2014-2015 DataStax
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
#include "metadata.hpp"
#include "buffer.hpp"
#include "collection_iterator.hpp"
#include "external_types.hpp"
#include "iterator.hpp"
#include "logger.hpp"
#include "map_iterator.hpp"
#include "result_iterator.hpp"
#include "row.hpp"
#include "row_iterator.hpp"
#include "scoped_lock.hpp"
#include "data_type_parser.hpp"
#include "value.hpp"
#include "third_party/rapidjson/rapidjson/document.h"
#include <algorithm>
#include <cmath>
#include <ctype.h>
static std::string& append_arguments(std::string& full_name, const std::string& arguments) {
full_name.push_back('(');
bool first = true;
std::istringstream stream(arguments);
while (!stream.eof()) {
std::string argument;
std::getline(stream, argument, ',');
// Remove white-space
argument.erase(std::remove_if(argument.begin(), argument.end(), ::isspace),
argument.end());
if (!argument.empty()) {
if (!first) full_name.push_back(',');
full_name.append(argument);
first = false;
}
}
full_name.push_back(')');
return full_name;
}
extern "C" {
void cass_schema_meta_free(const CassSchemaMeta* schema_meta) {
delete schema_meta->from();
}
cass_uint32_t cass_schema_meta_snapshot_version(const CassSchemaMeta* schema_meta) {
return schema_meta->version();
}
const CassKeyspaceMeta* cass_schema_meta_keyspace_by_name(const CassSchemaMeta* schema_meta,
const char* keyspace) {
return CassKeyspaceMeta::to(schema_meta->get_keyspace(keyspace));
}
const CassKeyspaceMeta* cass_schema_meta_keyspace_by_name_n(const CassSchemaMeta* schema_meta,
const char* keyspace,
size_t keyspace_length) {
return CassKeyspaceMeta::to(schema_meta->get_keyspace(std::string(keyspace, keyspace_length)));
}
const CassTableMeta* cass_keyspace_meta_table_by_name(const CassKeyspaceMeta* keyspace_meta,
const char* table) {
return CassTableMeta::to(keyspace_meta->get_table(table));
}
const CassTableMeta* cass_keyspace_meta_table_by_name_n(const CassKeyspaceMeta* keyspace_meta,
const char* table,
size_t table_length) {
return CassTableMeta::to(keyspace_meta->get_table(std::string(table, table_length)));
}
const CassDataType* cass_keyspace_meta_user_type_by_name(const CassKeyspaceMeta* keyspace_meta,
const char* type) {
return CassDataType::to(keyspace_meta->get_user_type(type));
}
const CassDataType* cass_keyspace_meta_user_type_by_name_n(const CassKeyspaceMeta* keyspace_meta,
const char* type,
size_t type_length) {
return CassDataType::to(keyspace_meta->get_user_type(std::string(type, type_length)));
}
const CassFunctionMeta* cass_keyspace_meta_function_by_name(const CassKeyspaceMeta* keyspace_meta,
const char* name,
const char* arguments) {
std::string full_function_name(name);
return CassFunctionMeta::to(keyspace_meta->get_function(
append_arguments(full_function_name, std::string(arguments))));
}
const CassFunctionMeta* cass_keyspace_meta_function_by_name_n(const CassKeyspaceMeta* keyspace_meta,
const char* name,
size_t name_length,
const char* arguments,
size_t arguments_length) {
std::string full_function_name(name, name_length);
return CassFunctionMeta::to(keyspace_meta->get_function(
append_arguments(full_function_name, std::string(arguments, arguments_length))));
}
const CassAggregateMeta* cass_keyspace_meta_aggregate_by_name(const CassKeyspaceMeta* keyspace_meta,
const char* name,
const char* arguments) {
std::string full_aggregate_name(name);
return CassAggregateMeta::to(keyspace_meta->get_aggregate(
append_arguments(full_aggregate_name, std::string(arguments))));
}
const CassAggregateMeta* cass_keyspace_meta_aggregate_by_name_n(const CassKeyspaceMeta* keyspace_meta,
const char* name,
size_t name_length,
const char* arguments,
size_t arguments_length) {
std::string full_aggregate_name(name, name_length);
return CassAggregateMeta::to(keyspace_meta->get_aggregate(
append_arguments(full_aggregate_name, std::string(arguments, arguments_length))));
}
void cass_keyspace_meta_name(const CassKeyspaceMeta* keyspace_meta,
const char** name, size_t* name_length) {
*name = keyspace_meta->name().data();
*name_length = keyspace_meta->name().size();
}
const CassValue* cass_keyspace_meta_field_by_name(const CassKeyspaceMeta* keyspace_meta,
const char* name) {
return CassValue::to(keyspace_meta->get_field(name));
}
const CassValue* cass_keyspace_meta_field_by_name_n(const CassKeyspaceMeta* keyspace_meta,
const char* name, size_t name_length) {
return CassValue::to(keyspace_meta->get_field(std::string(name, name_length)));
}
const CassColumnMeta* cass_table_meta_column_by_name(const CassTableMeta* table_meta,
const char* column) {
return CassColumnMeta::to(table_meta->get_column(column));
}
const CassColumnMeta* cass_table_meta_column_by_name_n(const CassTableMeta* table_meta,
const char* column,
size_t column_length) {
return CassColumnMeta::to(table_meta->get_column(std::string(column, column_length)));
}
void cass_table_meta_name(const CassTableMeta* table_meta,
const char** name, size_t* name_length) {
*name = table_meta->name().data();
*name_length = table_meta->name().size();
}
const CassValue* cass_table_meta_field_by_name(const CassTableMeta* table_meta,
const char* name) {
return CassValue::to(table_meta->get_field(name));
}
const CassValue* cass_table_meta_field_by_name_n(const CassTableMeta* table_meta,
const char* name, size_t name_length) {
return CassValue::to(table_meta->get_field(std::string(name, name_length)));
}
size_t cass_table_meta_column_count(const CassTableMeta* table_meta) {
return table_meta->columns().size();
}
const CassColumnMeta* cass_table_meta_column(const CassTableMeta* table_meta,
size_t index) {
if (index >= table_meta->columns().size()) {
return NULL;
}
return CassColumnMeta::to(table_meta->columns()[index].get());
}
size_t cass_table_meta_partition_key_count(const CassTableMeta* table_meta) {
return table_meta->partition_key().size();
}
const CassColumnMeta* cass_table_meta_partition_key(const CassTableMeta* table_meta,
size_t index) {
if (index >= table_meta->partition_key().size()) {
return NULL;
}
return CassColumnMeta::to(table_meta->partition_key()[index].get());
}
size_t cass_table_meta_clustering_key_count(const CassTableMeta* table_meta) {
return table_meta->clustering_key().size();
}
const CassColumnMeta* cass_table_meta_clustering_key(const CassTableMeta* table_meta,
size_t index) {
if (index >= table_meta->clustering_key().size()) {
return NULL;
}
return CassColumnMeta::to(table_meta->clustering_key()[index].get());
}
void cass_column_meta_name(const CassColumnMeta* column_meta,
const char** name, size_t* name_length) {
*name = column_meta->name().data();
*name_length = column_meta->name().size();
}
CassColumnType cass_column_meta_type(const CassColumnMeta* column_meta) {
return column_meta->type();
}
const CassDataType* cass_column_meta_data_type(const CassColumnMeta* column_meta) {
return CassDataType::to(column_meta->data_type().get());
}
const CassValue*
cass_column_meta_field_by_name(const CassColumnMeta* column_meta,
const char* name) {
return CassValue::to(column_meta->get_field(name));
}
const CassValue*
cass_column_meta_field_by_name_n(const CassColumnMeta* column_meta,
const char* name, size_t name_length) {
return CassValue::to(column_meta->get_field(std::string(name, name_length)));
}
void cass_function_meta_name(const CassFunctionMeta* function_meta,
const char** name,
size_t* name_length) {
*name = function_meta->simple_name().data();
*name_length = function_meta->simple_name().size();
}
void cass_function_meta_full_name(const CassFunctionMeta* function_meta,
const char** full_name,
size_t* full_name_length) {
*full_name = function_meta->name().data();
*full_name_length = function_meta->name().size();
}
void cass_function_meta_body(const CassFunctionMeta* function_meta,
const char** body,
size_t* body_length) {
*body = function_meta->body().data();
*body_length = function_meta->body().size();
}
void cass_function_meta_language(const CassFunctionMeta* function_meta,
const char** language,
size_t* language_length) {
*language = function_meta->language().data();
*language_length = function_meta->language().size();
}
cass_bool_t cass_function_meta_called_on_null_input(const CassFunctionMeta* function_meta) {
return function_meta->called_on_null_input() ? cass_true : cass_false;
}
size_t cass_function_meta_argument_count(const CassFunctionMeta* function_meta) {
return function_meta->args().size();
}
CassError cass_function_meta_argument(const CassFunctionMeta* function_meta,
size_t index,
const char** name,
size_t* name_length,
const CassDataType** type) {
if (index >= function_meta->args().size()) {
return CASS_ERROR_LIB_INDEX_OUT_OF_BOUNDS;
}
const cass::FunctionMetadata::Argument& arg = function_meta->args()[index];
*name = arg.name.data();
*name_length = arg.name.size();
*type = CassDataType::to(arg.type.get());
return CASS_OK;
}
const CassDataType* cass_function_meta_argument_type_by_name(const CassFunctionMeta* function_meta,
const char* name) {
return CassDataType::to(function_meta->get_arg_type(name));
}
const CassDataType* cass_function_meta_argument_type_by_name_n(const CassFunctionMeta* function_meta,
const char* name,
size_t name_length) {
return CassDataType::to(function_meta->get_arg_type(cass::StringRef(name, name_length)));
}
const CassDataType* cass_function_meta_return_type(const CassFunctionMeta* function_meta) {
return CassDataType::to(function_meta->return_type().get());
}
const CassValue* cass_function_meta_field_by_name(const CassFunctionMeta* function_meta,
const char* name) {
return CassValue::to(function_meta->get_field(name));
}
const CassValue* cass_function_meta_field_by_name_n(const CassFunctionMeta* function_meta,
const char* name,
size_t name_length) {
return CassValue::to(function_meta->get_field(std::string(name, name_length)));
}
void cass_aggregate_meta_name(const CassAggregateMeta* aggregate_meta,
const char** name,
size_t* name_length) {
*name = aggregate_meta->simple_name().data();
*name_length = aggregate_meta->simple_name().size();
}
void cass_aggregate_meta_full_name(const CassAggregateMeta* aggregate_meta,
const char** full_name,
size_t* full_name_length) {
*full_name = aggregate_meta->name().data();
*full_name_length = aggregate_meta->name().size();
}
size_t cass_aggregate_meta_argument_count(const CassAggregateMeta* aggregate_meta) {
return aggregate_meta->arg_types().size();
}
const CassDataType* cass_aggregate_meta_argument_type(const CassAggregateMeta* aggregate_meta,
size_t index) {
if (index >= aggregate_meta->arg_types().size()) {
return NULL;
}
return CassDataType::to(aggregate_meta->arg_types()[index].get());
}
const CassDataType* cass_aggregate_meta_return_type(const CassAggregateMeta* aggregate_meta) {
return CassDataType::to(aggregate_meta->return_type().get());
}
const CassDataType* cass_aggregate_meta_state_type(const CassAggregateMeta* aggregate_meta) {
return CassDataType::to(aggregate_meta->state_type().get());
}
const CassFunctionMeta* cass_aggregate_meta_state_func(const CassAggregateMeta* aggregate_meta) {
return CassFunctionMeta::to(aggregate_meta->state_func().get());
}
const CassFunctionMeta* cass_aggregate_meta_final_func(const CassAggregateMeta* aggregate_meta) {
return CassFunctionMeta::to(aggregate_meta->final_func().get());
}
const CassValue* cass_aggregate_meta_init_cond(const CassAggregateMeta* aggregate_meta) {
return CassValue::to(&aggregate_meta->init_cond());
}
const CassValue* cass_aggregate_meta_field_by_name(const CassAggregateMeta* aggregate_meta,
const char* name) {
return CassValue::to(aggregate_meta->get_field(name));
}
const CassValue* cass_aggregate_meta_field_by_name_n(const CassAggregateMeta* aggregate_meta,
const char* name,
size_t name_length) {
return CassValue::to(aggregate_meta->get_field(std::string(name, name_length)));
}
CassIterator* cass_iterator_keyspaces_from_schema_meta(const CassSchemaMeta* schema_meta) {
return CassIterator::to(schema_meta->iterator_keyspaces());
}
CassIterator* cass_iterator_tables_from_keyspace_meta(const CassKeyspaceMeta* keyspace_meta) {
return CassIterator::to(keyspace_meta->iterator_tables());
}
CassIterator* cass_iterator_user_types_from_keyspace_meta(const CassKeyspaceMeta* keyspace_meta) {
return CassIterator::to(keyspace_meta->iterator_user_types());
}
CassIterator* cass_iterator_functions_from_keyspace_meta(const CassKeyspaceMeta* keyspace_meta) {
return CassIterator::to(keyspace_meta->iterator_functions());
}
CassIterator* cass_iterator_aggregates_from_keyspace_meta(const CassKeyspaceMeta* keyspace_meta) {
return CassIterator::to(keyspace_meta->iterator_aggregates());
}
CassIterator* cass_iterator_fields_from_keyspace_meta(const CassKeyspaceMeta* keyspace_meta) {
return CassIterator::to(keyspace_meta->iterator_fields());
}
CassIterator* cass_iterator_columns_from_table_meta(const CassTableMeta* table_meta) {
return CassIterator::to(table_meta->iterator_columns());
}
CassIterator* cass_iterator_fields_from_table_meta(const CassTableMeta* table_meta) {
return CassIterator::to(table_meta->iterator_fields());
}
CassIterator* cass_iterator_fields_from_column_meta(const CassColumnMeta* column_meta) {
return CassIterator::to(column_meta->iterator_fields());
}
CassIterator* cass_iterator_fields_from_function_meta(const CassFunctionMeta* function_meta) {
return CassIterator::to(function_meta->iterator_fields());
}
CassIterator* cass_iterator_fields_from_aggregate_meta(const CassAggregateMeta* aggregate_meta) {
return CassIterator::to(aggregate_meta->iterator_fields());
}
const CassKeyspaceMeta* cass_iterator_get_keyspace_meta(const CassIterator* iterator) {
if (iterator->type() != CASS_ITERATOR_TYPE_KEYSPACE_META) {
return NULL;
}
return CassKeyspaceMeta::to(
static_cast<const cass::Metadata::KeyspaceIterator*>(
iterator->from())->keyspace());
}
const CassTableMeta* cass_iterator_get_table_meta(const CassIterator* iterator) {
if (iterator->type() != CASS_ITERATOR_TYPE_TABLE_META) {
return NULL;
}
return CassTableMeta::to(
static_cast<const cass::KeyspaceMetadata::TableIterator*>(
iterator->from())->table());
}
const CassDataType* cass_iterator_get_user_type(const CassIterator* iterator) {
if (iterator->type() != CASS_ITERATOR_TYPE_TYPE_META) {
return NULL;
}
return CassDataType::to(
static_cast<const cass::KeyspaceMetadata::TypeIterator*>(
iterator->from())->type());
}
const CassFunctionMeta* cass_iterator_get_function_meta(const CassIterator* iterator) {
if (iterator->type() != CASS_ITERATOR_TYPE_FUNCTION_META) {
return NULL;
}
return CassFunctionMeta::to(
static_cast<const cass::KeyspaceMetadata::FunctionIterator*>(
iterator->from())->function());
}
const CassAggregateMeta* cass_iterator_get_aggregate_meta(const CassIterator* iterator){
if (iterator->type() != CASS_ITERATOR_TYPE_AGGREGATE_META) {
return NULL;
}
return CassAggregateMeta::to(
static_cast<const cass::KeyspaceMetadata::AggregateIterator*>(
iterator->from())->aggregate());
}
const CassColumnMeta* cass_iterator_get_column_meta(const CassIterator* iterator) {
if (iterator->type() != CASS_ITERATOR_TYPE_COLUMN_META) {
return NULL;
}
return CassColumnMeta::to(
static_cast<const cass::TableMetadata::ColumnIterator*>(
iterator->from())->column());
}
CassError cass_iterator_get_meta_field_name(const CassIterator* iterator,
const char** name,
size_t* name_length) {
if (iterator->type() != CASS_ITERATOR_TYPE_META_FIELD) {
return CASS_ERROR_LIB_BAD_PARAMS;
}
const cass::MetadataField* field =
static_cast<const cass::MetadataFieldIterator*>(iterator->from())->field();
*name = field->name().data();
*name_length = field->name().size();
return CASS_OK;
}
const CassValue* cass_iterator_get_meta_field_value(const CassIterator* iterator) {
if (iterator->type() != CASS_ITERATOR_TYPE_META_FIELD) {
return NULL;
}
return CassValue::to(
static_cast<const cass::MetadataFieldIterator*>(
iterator->from())->field()->value());
}
} // extern "C"
namespace cass {
static const char* table_column_name(const cass::VersionNumber& cassandra_version) {
return cassandra_version >= VersionNumber(3, 0, 0) ? "table_name" : "columnfamily_name";
}
static const char* signature_column_name(const cass::VersionNumber& cassandra_version) {
return cassandra_version >= VersionNumber(3, 0, 0) ? "argument_types" : "signature";
}
template <class T>
const T& as_const(const T& x) { return x; }
struct ColumnCompare {
typedef CassColumnMeta::Ptr argument_type;
bool operator()(const CassColumnMeta::Ptr& a, const CassColumnMeta::Ptr& b) const {
bool result;
if (a->type() == b->type()) {
result = (a->type() == CASS_COLUMN_TYPE_PARTITION_KEY ||
a->type() == CASS_COLUMN_TYPE_CLUSTERING_KEY) &&
a->position() < b->position();
} else {
result = a->type() == CASS_COLUMN_TYPE_PARTITION_KEY ||
(a->type() == CASS_COLUMN_TYPE_CLUSTERING_KEY &&
b->type() != CASS_COLUMN_TYPE_PARTITION_KEY);
}
return result;
}
};
const KeyspaceMetadata* Metadata::SchemaSnapshot::get_keyspace(const std::string& name) const {
KeyspaceMetadata::Map::const_iterator i = keyspaces_->find(name);
if (i == keyspaces_->end()) return NULL;
return &i->second;
}
const UserType* Metadata::SchemaSnapshot::get_user_type(const std::string& keyspace_name,
const std::string& type_name) const
{
KeyspaceMetadata::Map::const_iterator i = keyspaces_->find(keyspace_name);
if (i == keyspaces_->end()) {
return NULL;
}
return i->second.get_user_type(type_name);
}
std::string Metadata::full_function_name(const std::string& name, const StringVec& signature) {
std::string full_function_name(name);
full_function_name.push_back('(');
for (StringVec::const_iterator i = signature.begin(),
end = signature.end(); i != end; ++i) {
std::string argument(*i);
// Remove white-space
argument.erase(std::remove_if(argument.begin(), argument.end(), ::isspace),
argument.end());
if (!argument.empty()) {
if (i != signature.begin()) full_function_name.push_back(',');
full_function_name.append(argument);
}
}
full_function_name.push_back(')');
return full_function_name;
}
Metadata::SchemaSnapshot Metadata::schema_snapshot() const {
ScopedMutex l(&mutex_);
return SchemaSnapshot(schema_snapshot_version_,
config_.protocol_version,
front_.keyspaces());
}
void Metadata::update_keyspaces(ResultResponse* result) {
KeyspaceMetadata::Map updates;
schema_snapshot_version_++;
if (is_front_buffer()) {
ScopedMutex l(&mutex_);
updating_->update_keyspaces(config_, result, updates);
} else {
updating_->update_keyspaces(config_, result, updates);
}
for (KeyspaceMetadata::Map::const_iterator i = updates.begin(); i != updates.end(); ++i) {
token_map_.update_keyspace(i->first, i->second);
}
}
void Metadata::update_tables(ResultResponse* tables_result, ResultResponse* columns_result) {
schema_snapshot_version_++;
if (is_front_buffer()) {
ScopedMutex l(&mutex_);
updating_->update_tables(config_, tables_result, columns_result);
} else {
updating_->update_tables(config_, tables_result, columns_result);
}
}
void Metadata::update_user_types(ResultResponse* result) {
schema_snapshot_version_++;
if (is_front_buffer()) {
ScopedMutex l(&mutex_);
updating_->update_user_types(config_, result);
} else {
updating_->update_user_types(config_, result);
}
}
void Metadata::update_functions(ResultResponse* result) {
schema_snapshot_version_++;
if (is_front_buffer()) {
ScopedMutex l(&mutex_);
updating_->update_functions(config_, result);
} else {
updating_->update_functions(config_, result);
}
}
void Metadata::update_aggregates(ResultResponse* result) {
schema_snapshot_version_++;
if (is_front_buffer()) {
ScopedMutex l(&mutex_);
updating_->update_aggregates(config_, result);
} else {
updating_->update_aggregates(config_, result);
}
}
void Metadata::drop_keyspace(const std::string& keyspace_name) {
schema_snapshot_version_++;
if (is_front_buffer()) {
ScopedMutex l(&mutex_);
updating_->drop_keyspace(keyspace_name);
} else {
updating_->drop_keyspace(keyspace_name);
}
}
void Metadata::drop_table(const std::string& keyspace_name, const std::string& table_name) {
schema_snapshot_version_++;
if (is_front_buffer()) {
ScopedMutex l(&mutex_);
updating_->drop_table(keyspace_name, table_name);
} else {
updating_->drop_table(keyspace_name, table_name);
}
}
void Metadata::drop_user_type(const std::string& keyspace_name, const std::string& type_name) {
schema_snapshot_version_++;
if (is_front_buffer()) {
ScopedMutex l(&mutex_);
updating_->drop_user_type(keyspace_name, type_name);
} else {
updating_->drop_user_type(keyspace_name, type_name);
}
}
void Metadata::drop_function(const std::string& keyspace_name, const std::string& full_function_name) {
schema_snapshot_version_++;
if (is_front_buffer()) {
ScopedMutex l(&mutex_);
updating_->drop_function(keyspace_name, full_function_name);
} else {
updating_->drop_function(keyspace_name, full_function_name);
}
}
void Metadata::drop_aggregate(const std::string& keyspace_name, const std::string& full_aggregate_name) {
schema_snapshot_version_++;
if (is_front_buffer()) {
ScopedMutex l(&mutex_);
updating_->drop_aggregate(keyspace_name, full_aggregate_name);
} else {
updating_->drop_aggregate(keyspace_name, full_aggregate_name);
}
}
void Metadata::clear_and_update_back() {
if (config_.cassandra_version >= VersionNumber(3, 0, 0)) {
config_.native_types.init_cql_names();
} else {
config_.native_types.init_class_names();
}
token_map_.clear();
back_.clear();
updating_ = &back_;
}
void Metadata::swap_to_back_and_update_front() {
{
ScopedMutex l(&mutex_);
schema_snapshot_version_++;
front_.swap(back_);
}
back_.clear();
updating_ = &front_;
}
void Metadata::clear() {
{
ScopedMutex l(&mutex_);
schema_snapshot_version_ = 0;
front_.clear();
}
back_.clear();
token_map_.clear();
}
const Value* MetadataBase::get_field(const std::string& name) const {
MetadataField::Map::const_iterator it = fields_.find(name);
if (it == fields_.end()) return NULL;
return it->second.value();
}
std::string MetadataBase::get_string_field(const std::string& name) const {
const Value* value = get_field(name);
if (value == NULL) return std::string();
return value->to_string();
}
const Value* MetadataBase::add_field(const SharedRefPtr<RefBuffer>& buffer, const Row* row, const std::string& name) {
const Value* value = row->get_by_name(name);
if (value == NULL) return NULL;
if (value->size() <= 0) {
fields_[name] = MetadataField(name);
} else {
fields_[name] = MetadataField(name, *value, buffer);
}
return value;
}
void MetadataBase::add_field(const SharedRefPtr<RefBuffer>& buffer, const Value& value, const std::string& name) {
fields_[name] = MetadataField(name, value, buffer);
}
void MetadataBase::add_json_list_field(int protocol_version, const Row* row, const std::string& name) {
const Value* value = row->get_by_name(name);
if (value == NULL) return;
if (value->size() <= 0) {
fields_[name] = MetadataField(name);
return;
}
int32_t buffer_size = value->size();
ScopedPtr<char[]> buf(new char[buffer_size + 1]);
memcpy(buf.get(), value->data(), buffer_size);
buf[buffer_size] = '\0';
rapidjson::Document d;
d.ParseInsitu(buf.get());
if (d.HasParseError()) {
LOG_ERROR("Unable to parse JSON (array) for column '%s'", name.c_str());
return;
}
if (!d.IsArray()) {
LOG_DEBUG("Expected JSON array for column '%s' (probably null or empty)", name.c_str());
fields_[name] = MetadataField(name);
return;
}
Collection collection(CollectionType::list(SharedRefPtr<DataType>(new DataType(CASS_VALUE_TYPE_TEXT))),
d.Size());
for (rapidjson::Value::ConstValueIterator i = d.Begin(); i != d.End(); ++i) {
collection.append(cass::CassString(i->GetString(), i->GetStringLength()));
}
size_t encoded_size = collection.get_items_size(protocol_version);
SharedRefPtr<RefBuffer> encoded(RefBuffer::create(encoded_size));
collection.encode_items(protocol_version, encoded->data());
Value list(protocol_version,
collection.data_type(),
d.Size(),
encoded->data(),
encoded_size);
fields_[name] = MetadataField(name, list, encoded);
}
const Value* MetadataBase::add_json_map_field(int protocol_version, const Row* row, const std::string& name) {
const Value* value = row->get_by_name(name);
if (value == NULL) return NULL;
if (value->size() <= 0) {
fields_[name] = MetadataField(name);
return NULL;
}
int32_t buffer_size = value->size();
ScopedPtr<char[]> buf(new char[buffer_size + 1]);
memcpy(buf.get(), value->data(), buffer_size);
buf[buffer_size] = '\0';
rapidjson::Document d;
d.ParseInsitu(buf.get());
if (d.HasParseError()) {
LOG_ERROR("Unable to parse JSON (object) for column '%s'", name.c_str());
return NULL;
}
if (!d.IsObject()) {
LOG_DEBUG("Expected JSON object for column '%s' (probably null or empty)", name.c_str());
fields_[name] = MetadataField(name);
return NULL;
}
Collection collection(CollectionType::map(SharedRefPtr<DataType>(new DataType(CASS_VALUE_TYPE_TEXT)),
SharedRefPtr<DataType>(new DataType(CASS_VALUE_TYPE_TEXT))),
2 * d.MemberCount());
for (rapidjson::Value::ConstMemberIterator i = d.MemberBegin(); i != d.MemberEnd(); ++i) {
collection.append(CassString(i->name.GetString(), i->name.GetStringLength()));
collection.append(CassString(i->value.GetString(), i->value.GetStringLength()));
}
size_t encoded_size = collection.get_items_size(protocol_version);
SharedRefPtr<RefBuffer> encoded(RefBuffer::create(encoded_size));
collection.encode_items(protocol_version, encoded->data());
Value map(protocol_version,
collection.data_type(),
d.MemberCount(),
encoded->data(),
encoded_size);
return (fields_[name] = MetadataField(name, map, encoded)).value();
}
const TableMetadata* KeyspaceMetadata::get_table(const std::string& name) const {
TableMetadata::Map::const_iterator i = tables_->find(name);
if (i == tables_->end()) return NULL;
return i->second.get();
}
const TableMetadata::Ptr& KeyspaceMetadata::get_or_create_table(const std::string& name) {
TableMetadata::Map::iterator i = tables_->find(name);
if (i == tables_->end()) {
i = tables_->insert(std::make_pair(name,
TableMetadata::Ptr(new TableMetadata(name)))).first;
}
return i->second;
}
void KeyspaceMetadata::add_table(const TableMetadata::Ptr& table) {
(*tables_)[table->name()] = table;
}
void KeyspaceMetadata::drop_table(const std::string& table_name) {
tables_->erase(table_name);
}
const UserType::Ptr& KeyspaceMetadata::get_or_create_user_type(const std::string& name) {
UserType::Map::iterator i = user_types_->find(name);
if (i == user_types_->end()) {
i = user_types_->insert(std::make_pair(name,
UserType::Ptr(new UserType(MetadataBase::name(), name)))).first;
}
return i->second;
}
const UserType* KeyspaceMetadata::get_user_type(const std::string& name) const {
UserType::Map::const_iterator i = user_types_->find(name);
if (i == user_types_->end()) return NULL;
return i->second.get();
}
void KeyspaceMetadata::update(const MetadataConfig& config, const SharedRefPtr<RefBuffer>& buffer, const Row* row) {
add_field(buffer, row, "keyspace_name");
add_field(buffer, row, "durable_writes");
if (config.cassandra_version >= VersionNumber(3, 0, 0)) {
const Value* map = add_field(buffer, row, "replication");
if (map != NULL &&
map->value_type() == CASS_VALUE_TYPE_MAP &&
is_string_type(map->primary_value_type()) &&
is_string_type(map->secondary_value_type())) {
MapIterator iterator(map);
while (iterator.next()) {
const Value* key = iterator.key();
const Value* value = iterator.value();
if (key->to_string_ref() == "class") {
strategy_class_ = value->to_string_ref();
}
strategy_options_[key->to_string_ref()] = value->to_string_ref();
}
}
} else {
const Value* value = add_field(buffer, row, "strategy_class");
if (value != NULL &&
is_string_type(value->value_type())) {
strategy_class_ = value->to_string_ref();
}
const Value* map = add_json_map_field(config.protocol_version, row, "strategy_options");
if (map != NULL &&
map->value_type() == CASS_VALUE_TYPE_MAP &&
is_string_type(map->primary_value_type()) &&
is_string_type(map->secondary_value_type())) {
MapIterator iterator(map);
while (iterator.next()) {
const Value* key = iterator.key();
const Value* value = iterator.value();
strategy_options_[key->to_string_ref()] = value->to_string_ref();
}
}
}
}
void KeyspaceMetadata::drop_user_type(const std::string& type_name) {
user_types_->erase(type_name);
}
void KeyspaceMetadata::add_function(const FunctionMetadata::Ptr& function) {
(*functions_)[function->name()] = function;
}
const FunctionMetadata* KeyspaceMetadata::get_function(const std::string& full_function_name) const {
FunctionMetadata::Map::const_iterator i = functions_->find(full_function_name);
if (i == functions_->end()) return NULL;
return i->second.get();
}
void KeyspaceMetadata::drop_function(const std::string& full_function_name) {
functions_->erase(full_function_name);
}
const AggregateMetadata* KeyspaceMetadata::get_aggregate(const std::string& full_aggregate_name) const {
AggregateMetadata::Map::const_iterator i = aggregates_->find(full_aggregate_name);
if (i == aggregates_->end()) return NULL;
return i->second.get();
}
void KeyspaceMetadata::add_aggregate(const AggregateMetadata::Ptr& aggregate) {
(*aggregates_)[aggregate->name()] = aggregate;
}
void KeyspaceMetadata::drop_aggregate(const std::string& full_aggregate_name) {
aggregates_->erase(full_aggregate_name);
}
TableMetadata::TableMetadata(const MetadataConfig& config,
const std::string& name, const SharedRefPtr<RefBuffer>& buffer, const Row* row)
: MetadataBase(name) {
add_field(buffer, row, "keyspace_name");
add_field(buffer, row, table_column_name(config.cassandra_version));
add_field(buffer, row, "bloom_filter_fp_chance");
add_field(buffer, row, "caching");
add_field(buffer, row, "comment");
add_field(buffer, row, "default_time_to_live");
add_field(buffer, row, "gc_grace_seconds");
add_field(buffer, row, "id");
add_field(buffer, row, "speculative_retry");
add_field(buffer, row, "max_index_interval");
add_field(buffer, row, "min_index_interval");
add_field(buffer, row, "memtable_flush_period_in_ms");
add_field(buffer, row, "read_repair_chance");
if (config.cassandra_version >= VersionNumber(3, 0, 0)) {
add_field(buffer, row, "dclocal_read_repair_chance");
add_field(buffer, row, "crc_check_chance");
add_field(buffer, row, "compaction");
add_field(buffer, row, "compression");
add_field(buffer, row, "extensions");
add_field(buffer, row, "flags");
} else {
add_field(buffer, row, "cf_id");
add_field(buffer, row, "local_read_repair_chance");
add_field(buffer, row, "compaction_strategy_class");
add_json_map_field(config.protocol_version, row, "compaction_strategy_options");
add_json_map_field(config.protocol_version, row, "compression_parameters");
add_json_list_field(config.protocol_version, row, "column_aliases");
add_field(buffer, row, "comparator");
add_field(buffer, row, "subcomparator");
add_field(buffer, row, "default_validator");
add_field(buffer, row, "key_alias");
add_json_list_field(config.protocol_version, row, "key_aliases");
add_field(buffer, row, "value_alias");
add_field(buffer, row, "key_validator");
add_field(buffer, row, "type");
add_field(buffer, row, "dropped_columns");
add_field(buffer, row, "index_interval");
add_field(buffer, row, "is_dense");
add_field(buffer, row, "max_compaction_threshold");
add_field(buffer, row, "min_compaction_threshold");
add_field(buffer, row, "populate_io_cache_on_flush");
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