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arangodb/arangod/MMFiles/MMFilesIndexFactory.cpp

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////////////////////////////////////////////////////////////////////////////////
/// DISCLAIMER
///
/// Copyright 2014-2016 ArangoDB GmbH, Cologne, Germany
/// Copyright 2004-2014 triAGENS GmbH, Cologne, Germany
///
/// 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.
///
/// Copyright holder is ArangoDB GmbH, Cologne, Germany
///
/// @author Michael Hackstein
////////////////////////////////////////////////////////////////////////////////
#include "MMFilesIndexFactory.h"
#include "Basics/Exceptions.h"
#include "Basics/StaticStrings.h"
#include "Basics/StringRef.h"
#include "Basics/StringUtils.h"
#include "Basics/VelocyPackHelper.h"
#include "Cluster/ServerState.h"
#include "Indexes/Index.h"
#include "MMFiles/MMFilesEdgeIndex.h"
#include "MMFiles/MMFilesFulltextIndex.h"
#include "MMFiles/MMFilesGeoIndex.h"
#include "MMFiles/MMFilesHashIndex.h"
#include "MMFiles/MMFilesPersistentIndex.h"
#include "MMFiles/MMFilesPrimaryIndex.h"
#include "MMFiles/MMFilesSkiplistIndex.h"
#include "MMFiles/mmfiles-fulltext-index.h"
#include "VocBase/LogicalCollection.h"
#include "VocBase/voc-types.h"
#include <velocypack/Builder.h>
#include <velocypack/Iterator.h>
#include <velocypack/Slice.h>
#include <velocypack/velocypack-aliases.h>
#include "IResearch/IResearchMMFilesLink.h"
using namespace arangodb;
////////////////////////////////////////////////////////////////////////////////
/// @brief process the fields list deduplicate and add them to the json
////////////////////////////////////////////////////////////////////////////////
static int ProcessIndexFields(VPackSlice const definition, VPackBuilder& builder,
size_t minFields, size_t maxField, bool create) {
TRI_ASSERT(builder.isOpenObject());
std::unordered_set<StringRef> fields;
auto fieldsSlice = definition.get(arangodb::StaticStrings::IndexFields);
builder.add(arangodb::velocypack::Value(arangodb::StaticStrings::IndexFields));
builder.openArray();
if (fieldsSlice.isArray()) {
// "fields" is a list of fields
for (auto const& it : VPackArrayIterator(fieldsSlice)) {
if (!it.isString()) {
return TRI_ERROR_BAD_PARAMETER;
}
StringRef f(it);
if (f.empty() || (create && f == StaticStrings::IdString)) {
// accessing internal attributes is disallowed
return TRI_ERROR_BAD_PARAMETER;
}
if (fields.find(f) != fields.end()) {
// duplicate attribute name
return TRI_ERROR_BAD_PARAMETER;
}
fields.insert(f);
builder.add(it);
}
}
size_t cc = fields.size();
if (cc == 0 || cc < minFields || cc > maxField) {
return TRI_ERROR_BAD_PARAMETER;
}
builder.close();
return TRI_ERROR_NO_ERROR;
}
////////////////////////////////////////////////////////////////////////////////
/// @brief process the unique flag and add it to the json
////////////////////////////////////////////////////////////////////////////////
static void ProcessIndexUniqueFlag(VPackSlice const definition, VPackBuilder& builder) {
bool unique = basics::VelocyPackHelper::getBooleanValue(
definition, arangodb::StaticStrings::IndexUnique.c_str(), false);
builder.add(arangodb::StaticStrings::IndexUnique, arangodb::velocypack::Value(unique));
}
////////////////////////////////////////////////////////////////////////////////
/// @brief process the sparse flag and add it to the json
////////////////////////////////////////////////////////////////////////////////
static void ProcessIndexSparseFlag(VPackSlice const definition,
VPackBuilder& builder, bool create) {
if (definition.hasKey(arangodb::StaticStrings::IndexSparse)) {
bool sparseBool = basics::VelocyPackHelper::getBooleanValue(
definition, arangodb::StaticStrings::IndexSparse.c_str(), false);
builder.add(arangodb::StaticStrings::IndexSparse,
arangodb::velocypack::Value(sparseBool));
} else if (create) {
// not set. now add a default value
builder.add(arangodb::StaticStrings::IndexSparse, arangodb::velocypack::Value(false));
}
}
////////////////////////////////////////////////////////////////////////////////
/// @brief process the deduplicate flag and add it to the json
////////////////////////////////////////////////////////////////////////////////
static void ProcessIndexDeduplicateFlag(VPackSlice const definition, VPackBuilder& builder) {
bool dup = true;
if (definition.hasKey("deduplicate")) {
dup = basics::VelocyPackHelper::getBooleanValue(definition, "deduplicate", true);
}
builder.add("deduplicate", VPackValue(dup));
}
////////////////////////////////////////////////////////////////////////////////
/// @brief enhances the json of a hash index
////////////////////////////////////////////////////////////////////////////////
static int EnhanceJsonIndexHash(VPackSlice const definition,
VPackBuilder& builder, bool create) {
int res = ProcessIndexFields(definition, builder, 1, INT_MAX, create);
if (res == TRI_ERROR_NO_ERROR) {
ProcessIndexSparseFlag(definition, builder, create);
ProcessIndexUniqueFlag(definition, builder);
ProcessIndexDeduplicateFlag(definition, builder);
}
return res;
}
////////////////////////////////////////////////////////////////////////////////
/// @brief enhances the json of a skiplist index
////////////////////////////////////////////////////////////////////////////////
static int EnhanceJsonIndexSkiplist(VPackSlice const definition,
VPackBuilder& builder, bool create) {
int res = ProcessIndexFields(definition, builder, 1, INT_MAX, create);
if (res == TRI_ERROR_NO_ERROR) {
ProcessIndexSparseFlag(definition, builder, create);
ProcessIndexUniqueFlag(definition, builder);
ProcessIndexDeduplicateFlag(definition, builder);
}
return res;
}
////////////////////////////////////////////////////////////////////////////////
/// @brief enhances the json of a Persistent index
////////////////////////////////////////////////////////////////////////////////
static int EnhanceJsonIndexPersistent(VPackSlice const definition,
VPackBuilder& builder, bool create) {
int res = ProcessIndexFields(definition, builder, 1, INT_MAX, create);
if (res == TRI_ERROR_NO_ERROR) {
ProcessIndexSparseFlag(definition, builder, create);
ProcessIndexUniqueFlag(definition, builder);
ProcessIndexDeduplicateFlag(definition, builder);
}
return res;
}
////////////////////////////////////////////////////////////////////////////////
/// @brief process the geojson flag and add it to the json
////////////////////////////////////////////////////////////////////////////////
static void ProcessIndexGeoJsonFlag(VPackSlice const definition, VPackBuilder& builder) {
auto fieldsSlice = definition.get(arangodb::StaticStrings::IndexFields);
if (fieldsSlice.isArray() && fieldsSlice.length() == 1) {
// only add geoJson for indexes with a single field (with needs to be an array)
bool geoJson =
basics::VelocyPackHelper::getBooleanValue(definition, "geoJson", false);
builder.add("geoJson", VPackValue(geoJson));
}
}
////////////////////////////////////////////////////////////////////////////////
/// @brief enhances the json of a geo1 index
////////////////////////////////////////////////////////////////////////////////
static int EnhanceJsonIndexGeo1(VPackSlice const definition,
VPackBuilder& builder, bool create) {
int res = ProcessIndexFields(definition, builder, 1, 1, create);
if (res == TRI_ERROR_NO_ERROR) {
builder.add(arangodb::StaticStrings::IndexSparse, arangodb::velocypack::Value(true));
builder.add(arangodb::StaticStrings::IndexUnique, arangodb::velocypack::Value(false));
ProcessIndexGeoJsonFlag(definition, builder);
}
return res;
}
////////////////////////////////////////////////////////////////////////////////
/// @brief enhances the json of a geo2 index
////////////////////////////////////////////////////////////////////////////////
static int EnhanceJsonIndexGeo2(VPackSlice const definition,
VPackBuilder& builder, bool create) {
int res = ProcessIndexFields(definition, builder, 2, 2, create);
if (res == TRI_ERROR_NO_ERROR) {
builder.add(arangodb::StaticStrings::IndexSparse, arangodb::velocypack::Value(true));
builder.add(arangodb::StaticStrings::IndexUnique, arangodb::velocypack::Value(false));
ProcessIndexGeoJsonFlag(definition, builder);
}
return res;
}
////////////////////////////////////////////////////////////////////////////////
/// @brief enhances the json of a s2 index
////////////////////////////////////////////////////////////////////////////////
static int EnhanceJsonIndexGeo(VPackSlice const definition, VPackBuilder& builder, bool create) {
int res = ProcessIndexFields(definition, builder, 1, 2, create);
if (res == TRI_ERROR_NO_ERROR) {
builder.add(arangodb::StaticStrings::IndexSparse, arangodb::velocypack::Value(true));
builder.add(arangodb::StaticStrings::IndexUnique, arangodb::velocypack::Value(false));
ProcessIndexGeoJsonFlag(definition, builder);
}
return res;
}
////////////////////////////////////////////////////////////////////////////////
/// @brief enhances the json of a fulltext index
////////////////////////////////////////////////////////////////////////////////
static int EnhanceJsonIndexFulltext(VPackSlice const definition,
VPackBuilder& builder, bool create) {
int res = ProcessIndexFields(definition, builder, 1, 1, create);
if (res == TRI_ERROR_NO_ERROR) {
// hard-coded defaults
builder.add(arangodb::StaticStrings::IndexSparse, arangodb::velocypack::Value(true));
builder.add(arangodb::StaticStrings::IndexUnique, arangodb::velocypack::Value(false));
// handle "minLength" attribute
int minWordLength = TRI_FULLTEXT_MIN_WORD_LENGTH_DEFAULT;
VPackSlice minLength = definition.get("minLength");
if (minLength.isNumber()) {
minWordLength = minLength.getNumericValue<int>();
} else if (!minLength.isNull() && !minLength.isNone()) {
return TRI_ERROR_BAD_PARAMETER;
}
builder.add("minLength", VPackValue(minWordLength));
}
return res;
}
MMFilesIndexFactory::MMFilesIndexFactory() {
emplaceFactory("edge",
[](LogicalCollection& collection, velocypack::Slice const& definition,
TRI_idx_iid_t id, bool isClusterConstructor) -> std::shared_ptr<Index> {
if (!isClusterConstructor) {
// this indexes cannot be created directly
THROW_ARANGO_EXCEPTION_MESSAGE(TRI_ERROR_INTERNAL,
"cannot create edge index");
}
return std::make_shared<MMFilesEdgeIndex>(id, collection);
});
emplaceFactory("fulltext",
[](LogicalCollection& collection, velocypack::Slice const& definition,
TRI_idx_iid_t id, bool isClusterConstructor) -> std::shared_ptr<Index> {
return std::make_shared<MMFilesFulltextIndex>(id, collection, definition);
});
emplaceFactory("geo1",
[](LogicalCollection& collection, velocypack::Slice const& definition,
TRI_idx_iid_t id, bool isClusterConstructor) -> std::shared_ptr<Index> {
return std::make_shared<MMFilesGeoIndex>(id, collection,
definition, "geo1");
});
emplaceFactory("geo2",
[](LogicalCollection& collection, velocypack::Slice const& definition,
TRI_idx_iid_t id, bool isClusterConstructor) -> std::shared_ptr<Index> {
return std::make_shared<MMFilesGeoIndex>(id, collection,
definition, "geo2");
});
emplaceFactory("geo",
[](LogicalCollection& collection, velocypack::Slice const& definition,
TRI_idx_iid_t id, bool isClusterConstructor) -> std::shared_ptr<Index> {
return std::make_shared<MMFilesGeoIndex>(id, collection,
definition, "geo");
});
emplaceFactory("hash",
[](LogicalCollection& collection, velocypack::Slice const& definition,
TRI_idx_iid_t id, bool isClusterConstructor) -> std::shared_ptr<Index> {
return std::make_shared<MMFilesHashIndex>(id, collection, definition);
});
emplaceFactory("persistent",
[](LogicalCollection& collection, velocypack::Slice const& definition,
TRI_idx_iid_t id, bool isClusterConstructor) -> std::shared_ptr<Index> {
return std::make_shared<MMFilesPersistentIndex>(id, collection, definition);
});
emplaceFactory("primary",
[](LogicalCollection& collection, velocypack::Slice const& definition,
TRI_idx_iid_t id, bool isClusterConstructor) -> std::shared_ptr<Index> {
if (!isClusterConstructor) {
// this indexes cannot be created directly
THROW_ARANGO_EXCEPTION_MESSAGE(
TRI_ERROR_INTERNAL, "cannot create primary index");
}
return std::make_shared<MMFilesPrimaryIndex>(collection);
});
emplaceFactory("skiplist",
[](LogicalCollection& collection, velocypack::Slice const& definition,
TRI_idx_iid_t id, bool isClusterConstructor) -> std::shared_ptr<Index> {
return std::make_shared<MMFilesSkiplistIndex>(id, collection, definition);
});
emplaceNormalizer("edge",
[](velocypack::Builder& normalized, velocypack::Slice definition,
bool isCreation) -> arangodb::Result {
if (isCreation) {
// creating these indexes yourself is forbidden
return TRI_ERROR_FORBIDDEN;
}
TRI_ASSERT(normalized.isOpenObject());
normalized.add(arangodb::StaticStrings::IndexType,
arangodb::velocypack::Value(Index::oldtypeName(
Index::TRI_IDX_TYPE_EDGE_INDEX)));
return TRI_ERROR_INTERNAL;
});
emplaceNormalizer("fulltext",
[](velocypack::Builder& normalized, velocypack::Slice definition,
bool isCreation) -> arangodb::Result {
TRI_ASSERT(normalized.isOpenObject());
normalized.add(arangodb::StaticStrings::IndexType,
arangodb::velocypack::Value(Index::oldtypeName(
Index::TRI_IDX_TYPE_FULLTEXT_INDEX)));
return EnhanceJsonIndexFulltext(definition, normalized, isCreation);
});
emplaceNormalizer("geo",
[](velocypack::Builder& normalized, velocypack::Slice definition,
bool isCreation) -> arangodb::Result {
TRI_ASSERT(normalized.isOpenObject());
normalized.add(arangodb::StaticStrings::IndexType,
arangodb::velocypack::Value(Index::oldtypeName(
Index::TRI_IDX_TYPE_GEO_INDEX)));
return EnhanceJsonIndexGeo(definition, normalized, isCreation);
});
emplaceNormalizer("geo1",
[](velocypack::Builder& normalized, velocypack::Slice definition,
bool isCreation) -> arangodb::Result {
TRI_ASSERT(normalized.isOpenObject());
normalized.add(arangodb::StaticStrings::IndexType,
arangodb::velocypack::Value(Index::oldtypeName(
Index::TRI_IDX_TYPE_GEO_INDEX)));
return EnhanceJsonIndexGeo1(definition, normalized, isCreation);
});
emplaceNormalizer("geo2",
[](velocypack::Builder& normalized, velocypack::Slice definition,
bool isCreation) -> arangodb::Result {
TRI_ASSERT(normalized.isOpenObject());
normalized.add(arangodb::StaticStrings::IndexType,
arangodb::velocypack::Value(Index::oldtypeName(
Index::TRI_IDX_TYPE_GEO_INDEX)));
return EnhanceJsonIndexGeo2(definition, normalized, isCreation);
});
emplaceNormalizer("hash",
[](velocypack::Builder& normalized, velocypack::Slice definition,
bool isCreation) -> arangodb::Result {
TRI_ASSERT(normalized.isOpenObject());
normalized.add(arangodb::StaticStrings::IndexType,
arangodb::velocypack::Value(Index::oldtypeName(
Index::TRI_IDX_TYPE_HASH_INDEX)));
return EnhanceJsonIndexHash(definition, normalized, isCreation);
});
emplaceNormalizer("primary",
[](velocypack::Builder& normalized, velocypack::Slice definition,
bool isCreation) -> arangodb::Result {
if (isCreation) {
// creating these indexes yourself is forbidden
return TRI_ERROR_FORBIDDEN;
}
TRI_ASSERT(normalized.isOpenObject());
normalized.add(arangodb::StaticStrings::IndexType,
arangodb::velocypack::Value(Index::oldtypeName(
Index::TRI_IDX_TYPE_PRIMARY_INDEX)));
return TRI_ERROR_INTERNAL;
});
emplaceNormalizer("persistent",
[](velocypack::Builder& normalized, velocypack::Slice definition,
bool isCreation) -> arangodb::Result {
TRI_ASSERT(normalized.isOpenObject());
normalized.add(arangodb::StaticStrings::IndexType,
arangodb::velocypack::Value(Index::oldtypeName(
Index::TRI_IDX_TYPE_PERSISTENT_INDEX)));
return EnhanceJsonIndexPersistent(definition, normalized, isCreation);
});
emplaceNormalizer("rocksdb",
[](velocypack::Builder& normalized, velocypack::Slice definition,
bool isCreation) -> arangodb::Result {
TRI_ASSERT(normalized.isOpenObject());
normalized.add(arangodb::StaticStrings::IndexType,
arangodb::velocypack::Value(Index::oldtypeName(
Index::TRI_IDX_TYPE_PERSISTENT_INDEX)));
return EnhanceJsonIndexPersistent(definition, normalized, isCreation);
});
emplaceNormalizer("skiplist",
[](velocypack::Builder& normalized, velocypack::Slice definition,
bool isCreation) -> arangodb::Result {
TRI_ASSERT(normalized.isOpenObject());
normalized.add(arangodb::StaticStrings::IndexType,
arangodb::velocypack::Value(Index::oldtypeName(
Index::TRI_IDX_TYPE_SKIPLIST_INDEX)));
return EnhanceJsonIndexSkiplist(definition, normalized, isCreation);
});
}
void MMFilesIndexFactory::fillSystemIndexes(arangodb::LogicalCollection& col,
std::vector<std::shared_ptr<arangodb::Index>>& systemIndexes) const {
// create primary index
systemIndexes.emplace_back(std::make_shared<arangodb::MMFilesPrimaryIndex>(col));
// create edges index
if (TRI_COL_TYPE_EDGE == col.type()) {
systemIndexes.emplace_back(std::make_shared<arangodb::MMFilesEdgeIndex>(1, col));
}
}
void MMFilesIndexFactory::prepareIndexes(
LogicalCollection& col, arangodb::velocypack::Slice const& indexesSlice,
std::vector<std::shared_ptr<arangodb::Index>>& indexes) const {
for (auto const& v : VPackArrayIterator(indexesSlice)) {
if (basics::VelocyPackHelper::getBooleanValue(v, "error", false)) {
// We have an error here.
// Do not add index.
continue;
}
auto idx = prepareIndexFromSlice(v, false, col, true);
if (!idx) {
LOG_TOPIC(ERR, arangodb::Logger::ENGINES)
<< "error creating index from definition '" << v.toString() << "'";
continue;
}
indexes.emplace_back(std::move(idx));
}
}
// -----------------------------------------------------------------------------
// --SECTION-- END-OF-FILE
// -----------------------------------------------------------------------------
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