556 lines
24 KiB
C++
556 lines
24 KiB
C++
/*
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* MultiVersionTransaction.h
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*
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* This source file is part of the FoundationDB open source project
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*
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* Copyright 2013-2018 Apple Inc. and the FoundationDB project authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef FDBCLIENT_MULTIVERSIONTRANSACTION_H
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#define FDBCLIENT_MULTIVERSIONTRANSACTION_H
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#pragma once
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#include "fdbclient/FDBOptions.g.h"
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#include "fdbclient/FDBTypes.h"
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#include "fdbclient/IClientApi.h"
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#include "flow/ThreadHelper.actor.h"
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struct FdbCApi : public ThreadSafeReferenceCounted<FdbCApi> {
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typedef struct future FDBFuture;
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typedef struct cluster FDBCluster;
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typedef struct database FDBDatabase;
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typedef struct transaction FDBTransaction;
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#pragma pack(push, 4)
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typedef struct key {
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const uint8_t* key;
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int keyLength;
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} FDBKey;
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typedef struct keyvalue {
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const void* key;
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int keyLength;
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const void* value;
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int valueLength;
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} FDBKeyValue;
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#pragma pack(pop)
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typedef int fdb_error_t;
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typedef int fdb_bool_t;
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typedef void (*FDBCallback)(FDBFuture* future, void* callback_parameter);
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// Network
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fdb_error_t (*selectApiVersion)(int runtimeVersion, int headerVersion);
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const char* (*getClientVersion)();
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FDBFuture* (*getServerProtocol)(const char* clusterFilePath);
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fdb_error_t (*setNetworkOption)(FDBNetworkOptions::Option option, uint8_t const* value, int valueLength);
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fdb_error_t (*setupNetwork)();
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fdb_error_t (*runNetwork)();
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fdb_error_t (*stopNetwork)();
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fdb_error_t* (*createDatabase)(const char* clusterFilePath, FDBDatabase** db);
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// Database
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fdb_error_t (*databaseCreateTransaction)(FDBDatabase* database, FDBTransaction** tr);
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fdb_error_t (*databaseSetOption)(FDBDatabase* database,
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FDBDatabaseOptions::Option option,
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uint8_t const* value,
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int valueLength);
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void (*databaseDestroy)(FDBDatabase* database);
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FDBFuture* (*databaseRebootWorker)(FDBDatabase* database,
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uint8_t const* address,
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int addressLength,
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fdb_bool_t check,
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int duration);
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FDBFuture* (*databaseForceRecoveryWithDataLoss)(FDBDatabase* database, uint8_t const* dcid, int dcidLength);
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FDBFuture* (*databaseCreateSnapshot)(FDBDatabase* database,
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uint8_t const* uid,
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int uidLength,
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uint8_t const* snapshotCommmand,
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int snapshotCommandLength);
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// Transaction
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fdb_error_t (*transactionSetOption)(FDBTransaction* tr,
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FDBTransactionOptions::Option option,
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uint8_t const* value,
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int valueLength);
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void (*transactionDestroy)(FDBTransaction* tr);
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void (*transactionSetReadVersion)(FDBTransaction* tr, int64_t version);
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FDBFuture* (*transactionGetReadVersion)(FDBTransaction* tr);
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FDBFuture* (*transactionGet)(FDBTransaction* tr, uint8_t const* keyName, int keyNameLength, fdb_bool_t snapshot);
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FDBFuture* (*transactionGetKey)(FDBTransaction* tr,
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uint8_t const* keyName,
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int keyNameLength,
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fdb_bool_t orEqual,
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int offset,
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fdb_bool_t snapshot);
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FDBFuture* (*transactionGetAddressesForKey)(FDBTransaction* tr, uint8_t const* keyName, int keyNameLength);
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FDBFuture* (*transactionGetRange)(FDBTransaction* tr,
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uint8_t const* beginKeyName,
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int beginKeyNameLength,
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fdb_bool_t beginOrEqual,
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int beginOffset,
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uint8_t const* endKeyName,
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int endKeyNameLength,
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fdb_bool_t endOrEqual,
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int endOffset,
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int limit,
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int targetBytes,
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FDBStreamingModes::Option mode,
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int iteration,
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fdb_bool_t snapshot,
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fdb_bool_t reverse);
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FDBFuture* (*transactionGetVersionstamp)(FDBTransaction* tr);
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void (*transactionSet)(FDBTransaction* tr,
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uint8_t const* keyName,
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int keyNameLength,
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uint8_t const* value,
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int valueLength);
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void (*transactionClear)(FDBTransaction* tr, uint8_t const* keyName, int keyNameLength);
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void (*transactionClearRange)(FDBTransaction* tr,
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uint8_t const* beginKeyName,
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int beginKeyNameLength,
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uint8_t const* endKeyName,
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int endKeyNameLength);
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void (*transactionAtomicOp)(FDBTransaction* tr,
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uint8_t const* keyName,
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int keyNameLength,
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uint8_t const* param,
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int paramLength,
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FDBMutationTypes::Option operationType);
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FDBFuture* (*transactionGetEstimatedRangeSizeBytes)(FDBTransaction* tr,
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uint8_t const* begin_key_name,
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int begin_key_name_length,
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uint8_t const* end_key_name,
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int end_key_name_length);
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FDBFuture* (*transactionGetRangeSplitPoints)(FDBTransaction* tr,
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uint8_t const* begin_key_name,
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int begin_key_name_length,
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uint8_t const* end_key_name,
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int end_key_name_length,
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int64_t chunkSize);
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FDBFuture* (*transactionCommit)(FDBTransaction* tr);
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fdb_error_t (*transactionGetCommittedVersion)(FDBTransaction* tr, int64_t* outVersion);
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FDBFuture* (*transactionGetApproximateSize)(FDBTransaction* tr);
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FDBFuture* (*transactionWatch)(FDBTransaction* tr, uint8_t const* keyName, int keyNameLength);
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FDBFuture* (*transactionOnError)(FDBTransaction* tr, fdb_error_t error);
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void (*transactionReset)(FDBTransaction* tr);
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void (*transactionCancel)(FDBTransaction* tr);
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fdb_error_t (*transactionAddConflictRange)(FDBTransaction* tr,
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uint8_t const* beginKeyName,
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int beginKeyNameLength,
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uint8_t const* endKeyName,
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int endKeyNameLength,
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FDBConflictRangeTypes::Option);
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// Future
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fdb_error_t (*futureGetDatabase)(FDBFuture* f, FDBDatabase** outDb);
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fdb_error_t (*futureGetInt64)(FDBFuture* f, int64_t* outValue);
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fdb_error_t (*futureGetUInt64)(FDBFuture* f, uint64_t* outValue);
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fdb_error_t (*futureGetBool)(FDBFuture* f, bool* outValue);
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fdb_error_t (*futureGetError)(FDBFuture* f);
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fdb_error_t (*futureGetKey)(FDBFuture* f, uint8_t const** outKey, int* outKeyLength);
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fdb_error_t (*futureGetValue)(FDBFuture* f, fdb_bool_t* outPresent, uint8_t const** outValue, int* outValueLength);
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fdb_error_t (*futureGetStringArray)(FDBFuture* f, const char*** outStrings, int* outCount);
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fdb_error_t (*futureGetKeyArray)(FDBFuture* f, FDBKey const** outKeys, int* outCount);
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fdb_error_t (*futureGetKeyValueArray)(FDBFuture* f, FDBKeyValue const** outKV, int* outCount, fdb_bool_t* outMore);
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fdb_error_t (*futureSetCallback)(FDBFuture* f, FDBCallback callback, void* callback_parameter);
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void (*futureCancel)(FDBFuture* f);
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void (*futureDestroy)(FDBFuture* f);
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// Legacy Support
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FDBFuture* (*createCluster)(const char* clusterFilePath);
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FDBFuture* (*clusterCreateDatabase)(FDBCluster* cluster, uint8_t* dbName, int dbNameLength);
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void (*clusterDestroy)(FDBCluster* cluster);
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fdb_error_t (*futureGetCluster)(FDBFuture* f, FDBCluster** outCluster);
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};
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class DLTransaction : public ITransaction, ThreadSafeReferenceCounted<DLTransaction> {
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public:
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DLTransaction(Reference<FdbCApi> api, FdbCApi::FDBTransaction* tr) : api(api), tr(tr) {}
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~DLTransaction() override { api->transactionDestroy(tr); }
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void cancel() override;
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void setVersion(Version v) override;
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ThreadFuture<Version> getReadVersion() override;
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ThreadFuture<Optional<Value>> get(const KeyRef& key, bool snapshot = false) override;
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ThreadFuture<Key> getKey(const KeySelectorRef& key, bool snapshot = false) override;
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ThreadFuture<Standalone<RangeResultRef>> getRange(const KeySelectorRef& begin,
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const KeySelectorRef& end,
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int limit,
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bool snapshot = false,
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bool reverse = false) override;
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ThreadFuture<Standalone<RangeResultRef>> getRange(const KeySelectorRef& begin,
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const KeySelectorRef& end,
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GetRangeLimits limits,
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bool snapshot = false,
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bool reverse = false) override;
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ThreadFuture<Standalone<RangeResultRef>> getRange(const KeyRangeRef& keys,
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int limit,
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bool snapshot = false,
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bool reverse = false) override;
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ThreadFuture<Standalone<RangeResultRef>> getRange(const KeyRangeRef& keys,
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GetRangeLimits limits,
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bool snapshot = false,
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bool reverse = false) override;
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ThreadFuture<Standalone<VectorRef<const char*>>> getAddressesForKey(const KeyRef& key) override;
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ThreadFuture<Standalone<StringRef>> getVersionstamp() override;
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ThreadFuture<int64_t> getEstimatedRangeSizeBytes(const KeyRangeRef& keys) override;
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ThreadFuture<Standalone<VectorRef<KeyRef>>> getRangeSplitPoints(const KeyRangeRef& range,
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int64_t chunkSize) override;
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void addReadConflictRange(const KeyRangeRef& keys) override;
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void atomicOp(const KeyRef& key, const ValueRef& value, uint32_t operationType) override;
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void set(const KeyRef& key, const ValueRef& value) override;
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void clear(const KeyRef& begin, const KeyRef& end) override;
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void clear(const KeyRangeRef& range) override;
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void clear(const KeyRef& key) override;
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ThreadFuture<Void> watch(const KeyRef& key) override;
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void addWriteConflictRange(const KeyRangeRef& keys) override;
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ThreadFuture<Void> commit() override;
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Version getCommittedVersion() override;
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ThreadFuture<int64_t> getApproximateSize() override;
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void setOption(FDBTransactionOptions::Option option, Optional<StringRef> value = Optional<StringRef>()) override;
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ThreadFuture<Void> onError(Error const& e) override;
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void reset() override;
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void addref() override { ThreadSafeReferenceCounted<DLTransaction>::addref(); }
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void delref() override { ThreadSafeReferenceCounted<DLTransaction>::delref(); }
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private:
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const Reference<FdbCApi> api;
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FdbCApi::FDBTransaction* const tr;
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};
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class DLDatabase : public IDatabase, ThreadSafeReferenceCounted<DLDatabase> {
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public:
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DLDatabase(Reference<FdbCApi> api, FdbCApi::FDBDatabase* db) : api(api), db(db), ready(Void()) {}
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DLDatabase(Reference<FdbCApi> api, ThreadFuture<FdbCApi::FDBDatabase*> dbFuture);
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~DLDatabase() override {
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if (db) {
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api->databaseDestroy(db);
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}
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}
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ThreadFuture<Void> onReady();
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Reference<ITransaction> createTransaction() override;
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void setOption(FDBDatabaseOptions::Option option, Optional<StringRef> value = Optional<StringRef>()) override;
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void addref() override { ThreadSafeReferenceCounted<DLDatabase>::addref(); }
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void delref() override { ThreadSafeReferenceCounted<DLDatabase>::delref(); }
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ThreadFuture<int64_t> rebootWorker(const StringRef& address, bool check, int duration) override;
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ThreadFuture<Void> forceRecoveryWithDataLoss(const StringRef& dcid) override;
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ThreadFuture<Void> createSnapshot(const StringRef& uid, const StringRef& snapshot_command) override;
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private:
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const Reference<FdbCApi> api;
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FdbCApi::FDBDatabase*
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db; // Always set if API version >= 610, otherwise guaranteed to be set when onReady future is set
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ThreadFuture<Void> ready;
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};
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class DLApi : public IClientApi {
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public:
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DLApi(std::string fdbCPath, bool unlinkOnLoad = false);
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void selectApiVersion(int apiVersion) override;
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const char* getClientVersion() override;
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ThreadFuture<uint64_t> getServerProtocol(const char* clusterFilePath) override;
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void setNetworkOption(FDBNetworkOptions::Option option, Optional<StringRef> value = Optional<StringRef>()) override;
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void setupNetwork() override;
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void runNetwork() override;
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void stopNetwork() override;
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Reference<IDatabase> createDatabase(const char* clusterFilePath) override;
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Reference<IDatabase> createDatabase609(const char* clusterFilePath); // legacy database creation
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void addNetworkThreadCompletionHook(void (*hook)(void*), void* hookParameter) override;
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private:
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const std::string fdbCPath;
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const Reference<FdbCApi> api;
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const bool unlinkOnLoad;
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int headerVersion;
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bool networkSetup;
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Mutex lock;
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std::vector<std::pair<void (*)(void*), void*>> threadCompletionHooks;
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void init();
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};
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class MultiVersionDatabase;
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class MultiVersionTransaction : public ITransaction, ThreadSafeReferenceCounted<MultiVersionTransaction> {
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public:
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MultiVersionTransaction(Reference<MultiVersionDatabase> db,
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UniqueOrderedOptionList<FDBTransactionOptions> defaultOptions);
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void cancel() override;
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void setVersion(Version v) override;
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ThreadFuture<Version> getReadVersion() override;
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ThreadFuture<Optional<Value>> get(const KeyRef& key, bool snapshot = false) override;
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ThreadFuture<Key> getKey(const KeySelectorRef& key, bool snapshot = false) override;
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ThreadFuture<Standalone<RangeResultRef>> getRange(const KeySelectorRef& begin,
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const KeySelectorRef& end,
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int limit,
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bool snapshot = false,
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bool reverse = false) override;
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ThreadFuture<Standalone<RangeResultRef>> getRange(const KeySelectorRef& begin,
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const KeySelectorRef& end,
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GetRangeLimits limits,
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bool snapshot = false,
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bool reverse = false) override;
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ThreadFuture<Standalone<RangeResultRef>> getRange(const KeyRangeRef& keys,
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int limit,
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bool snapshot = false,
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bool reverse = false) override;
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ThreadFuture<Standalone<RangeResultRef>> getRange(const KeyRangeRef& keys,
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GetRangeLimits limits,
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bool snapshot = false,
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bool reverse = false) override;
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ThreadFuture<Standalone<VectorRef<const char*>>> getAddressesForKey(const KeyRef& key) override;
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ThreadFuture<Standalone<StringRef>> getVersionstamp() override;
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void addReadConflictRange(const KeyRangeRef& keys) override;
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ThreadFuture<int64_t> getEstimatedRangeSizeBytes(const KeyRangeRef& keys) override;
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ThreadFuture<Standalone<VectorRef<KeyRef>>> getRangeSplitPoints(const KeyRangeRef& range,
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int64_t chunkSize) override;
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void atomicOp(const KeyRef& key, const ValueRef& value, uint32_t operationType) override;
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void set(const KeyRef& key, const ValueRef& value) override;
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void clear(const KeyRef& begin, const KeyRef& end) override;
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void clear(const KeyRangeRef& range) override;
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void clear(const KeyRef& key) override;
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ThreadFuture<Void> watch(const KeyRef& key) override;
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void addWriteConflictRange(const KeyRangeRef& keys) override;
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ThreadFuture<Void> commit() override;
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Version getCommittedVersion() override;
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ThreadFuture<int64_t> getApproximateSize() override;
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void setOption(FDBTransactionOptions::Option option, Optional<StringRef> value = Optional<StringRef>()) override;
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ThreadFuture<Void> onError(Error const& e) override;
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void reset() override;
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void addref() override { ThreadSafeReferenceCounted<MultiVersionTransaction>::addref(); }
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void delref() override { ThreadSafeReferenceCounted<MultiVersionTransaction>::delref(); }
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private:
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const Reference<MultiVersionDatabase> db;
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ThreadSpinLock lock;
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struct TransactionInfo {
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Reference<ITransaction> transaction;
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ThreadFuture<Void> onChange;
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};
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TransactionInfo transaction;
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TransactionInfo getTransaction();
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void updateTransaction();
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void setDefaultOptions(UniqueOrderedOptionList<FDBTransactionOptions> options);
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std::vector<std::pair<FDBTransactionOptions::Option, Optional<Standalone<StringRef>>>> persistentOptions;
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};
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struct ClientDesc {
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std::string const libPath;
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bool const external;
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ClientDesc(std::string libPath, bool external) : libPath(libPath), external(external) {}
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};
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struct ClientInfo : ClientDesc, ThreadSafeReferenceCounted<ClientInfo> {
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ProtocolVersion protocolVersion;
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IClientApi* api;
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bool failed;
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std::vector<std::pair<void (*)(void*), void*>> threadCompletionHooks;
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ClientInfo() : ClientDesc(std::string(), false), protocolVersion(0), api(nullptr), failed(true) {}
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ClientInfo(IClientApi* api) : ClientDesc("internal", false), protocolVersion(0), api(api), failed(false) {}
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ClientInfo(IClientApi* api, std::string libPath)
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: ClientDesc(libPath, true), protocolVersion(0), api(api), failed(false) {}
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void loadProtocolVersion();
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bool canReplace(Reference<ClientInfo> other) const;
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};
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class MultiVersionApi;
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class MultiVersionDatabase final : public IDatabase, ThreadSafeReferenceCounted<MultiVersionDatabase> {
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public:
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MultiVersionDatabase(MultiVersionApi* api,
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int threadIdx,
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std::string clusterFilePath,
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Reference<IDatabase> db,
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bool openConnectors = true);
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~MultiVersionDatabase() override;
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Reference<ITransaction> createTransaction() override;
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void setOption(FDBDatabaseOptions::Option option, Optional<StringRef> value = Optional<StringRef>()) override;
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void addref() override { ThreadSafeReferenceCounted<MultiVersionDatabase>::addref(); }
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void delref() override { ThreadSafeReferenceCounted<MultiVersionDatabase>::delref(); }
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static Reference<IDatabase> debugCreateFromExistingDatabase(Reference<IDatabase> db);
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ThreadFuture<int64_t> rebootWorker(const StringRef& address, bool check, int duration) override;
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ThreadFuture<Void> forceRecoveryWithDataLoss(const StringRef& dcid) override;
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ThreadFuture<Void> createSnapshot(const StringRef& uid, const StringRef& snapshot_command) override;
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private:
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struct DatabaseState;
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struct Connector : ThreadCallback, ThreadSafeReferenceCounted<Connector> {
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Connector(Reference<DatabaseState> dbState, Reference<ClientInfo> client, std::string clusterFilePath)
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: dbState(dbState), client(client), clusterFilePath(clusterFilePath), connected(false), cancelled(false) {}
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void connect();
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void cancel();
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bool canFire(int notMadeActive) const override { return true; }
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void fire(const Void& unused, int& userParam) override;
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void error(const Error& e, int& userParam) override;
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const Reference<ClientInfo> client;
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const std::string clusterFilePath;
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const Reference<DatabaseState> dbState;
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ThreadFuture<Void> connectionFuture;
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Reference<IDatabase> candidateDatabase;
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Reference<ITransaction> tr;
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bool connected;
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bool cancelled;
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};
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struct DatabaseState : ThreadSafeReferenceCounted<DatabaseState> {
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DatabaseState();
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void stateChanged();
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void addConnection(Reference<ClientInfo> client, std::string clusterFilePath);
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void startConnections();
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void cancelConnections();
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Reference<IDatabase> db;
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const Reference<ThreadSafeAsyncVar<Reference<IDatabase>>> dbVar;
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ThreadFuture<Void> changed;
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|
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|
bool cancelled;
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|
|
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int currentClientIndex;
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std::vector<Reference<ClientInfo>> clients;
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std::vector<Reference<Connector>> connectionAttempts;
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|
|
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std::vector<std::pair<FDBDatabaseOptions::Option, Optional<Standalone<StringRef>>>> options;
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UniqueOrderedOptionList<FDBTransactionOptions> transactionDefaultOptions;
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Mutex optionLock;
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};
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|
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const Reference<DatabaseState> dbState;
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friend class MultiVersionTransaction;
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|
};
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class MultiVersionApi : public IClientApi {
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public:
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void selectApiVersion(int apiVersion) override;
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const char* getClientVersion() override;
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ThreadFuture<uint64_t> getServerProtocol(const char* clusterFilePath) override;
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|
|
|
void setNetworkOption(FDBNetworkOptions::Option option, Optional<StringRef> value = Optional<StringRef>()) override;
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|
void setupNetwork() override;
|
|
void runNetwork() override;
|
|
void stopNetwork() override;
|
|
void addNetworkThreadCompletionHook(void (*hook)(void*), void* hookParameter) override;
|
|
|
|
Reference<IDatabase> createDatabase(const char* clusterFilePath) override;
|
|
static MultiVersionApi* api;
|
|
|
|
Reference<ClientInfo> getLocalClient();
|
|
void runOnExternalClients(int threadId,
|
|
std::function<void(Reference<ClientInfo>)>,
|
|
bool runOnFailedClients = false);
|
|
void runOnExternalClientsAllThreads(std::function<void(Reference<ClientInfo>)>, bool runOnFailedClients = false);
|
|
|
|
void updateSupportedVersions();
|
|
|
|
bool callbackOnMainThread;
|
|
bool localClientDisabled;
|
|
|
|
static bool apiVersionAtLeast(int minVersion);
|
|
|
|
private:
|
|
MultiVersionApi();
|
|
|
|
void loadEnvironmentVariableNetworkOptions();
|
|
|
|
void disableMultiVersionClientApi();
|
|
void setCallbacksOnExternalThreads();
|
|
void addExternalLibrary(std::string path);
|
|
void addExternalLibraryDirectory(std::string path);
|
|
// Return a vector of (pathname, unlink_on_close) pairs. Makes threadCount - 1 copies of the library stored in
|
|
// path, and returns a vector of length threadCount.
|
|
std::vector<std::pair<std::string, bool>> copyExternalLibraryPerThread(std::string path);
|
|
void disableLocalClient();
|
|
void setSupportedClientVersions(Standalone<StringRef> versions);
|
|
|
|
void setNetworkOptionInternal(FDBNetworkOptions::Option option, Optional<StringRef> value);
|
|
|
|
Reference<ClientInfo> localClient;
|
|
std::map<std::string, ClientDesc> externalClientDescriptions;
|
|
std::map<std::string, std::vector<Reference<ClientInfo>>> externalClients;
|
|
|
|
bool networkStartSetup;
|
|
volatile bool networkSetup;
|
|
volatile bool bypassMultiClientApi;
|
|
volatile bool externalClient;
|
|
int apiVersion;
|
|
|
|
int nextThread = 0;
|
|
int threadCount;
|
|
|
|
Mutex lock;
|
|
std::vector<std::pair<FDBNetworkOptions::Option, Optional<Standalone<StringRef>>>> options;
|
|
std::map<FDBNetworkOptions::Option, std::set<Standalone<StringRef>>> setEnvOptions;
|
|
volatile bool envOptionsLoaded;
|
|
};
|
|
|
|
#endif
|