216 lines
6.6 KiB
C++
216 lines
6.6 KiB
C++
/*
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* MasterProxyInterface.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_MASTERPROXYINTERFACE_H
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#define FDBCLIENT_MASTERPROXYINTERFACE_H
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#pragma once
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#include "FDBTypes.h"
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#include "StorageServerInterface.h"
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#include "CommitTransaction.h"
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struct MasterProxyInterface {
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enum { LocationAwareLoadBalance = 1 };
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LocalityData locality;
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RequestStream< struct CommitTransactionRequest > commit;
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RequestStream< struct GetReadVersionRequest > getConsistentReadVersion; // Returns a version which (1) is committed, and (2) is >= the latest version reported committed (by a commit response) when this request was sent
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// (at some point between when this request is sent and when its response is received, the latest version reported committed)
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RequestStream< struct GetKeyServerLocationsRequest > getKeyServersLocations;
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RequestStream< struct GetStorageServerRejoinInfoRequest > getStorageServerRejoinInfo;
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RequestStream<ReplyPromise<Void>> waitFailure;
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RequestStream< struct GetRawCommittedVersionRequest > getRawCommittedVersion;
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RequestStream< struct TxnStateRequest > txnState;
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UID id() const { return commit.getEndpoint().token; }
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std::string toString() const { return id().shortString(); }
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bool operator == (MasterProxyInterface const& r) const { return id() == r.id(); }
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bool operator != (MasterProxyInterface const& r) const { return id() != r.id(); }
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NetworkAddress address() const { return commit.getEndpoint().address; }
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template <class Archive>
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void serialize(Archive& ar) {
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ar & locality & commit & getConsistentReadVersion & getKeyServersLocations & waitFailure & getStorageServerRejoinInfo & getRawCommittedVersion & txnState;
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}
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void initEndpoints() {
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getConsistentReadVersion.getEndpoint(TaskProxyGetConsistentReadVersion);
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getRawCommittedVersion.getEndpoint(TaskProxyGetRawCommittedVersion);
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commit.getEndpoint(TaskProxyCommit);
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getKeyServersLocations.getEndpoint(TaskProxyGetKeyServersLocations);
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}
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};
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struct CommitID {
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Version version; // returns invalidVersion if transaction conflicts
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uint16_t txnBatchId;
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template <class Ar>
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void serialize(Ar& ar) {
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ar & version & txnBatchId;
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}
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CommitID() : version(invalidVersion), txnBatchId(0) {}
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CommitID( Version version, uint16_t txnBatchId ) : version(version), txnBatchId(txnBatchId) {}
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};
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struct CommitTransactionRequest {
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Arena arena;
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CommitTransactionRef transaction;
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ReplyPromise<CommitID> reply;
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Optional<UID> debugID;
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bool isLockAware;
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template <class Ar>
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void serialize(Ar& ar) {
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ar & transaction & reply & arena & debugID & isLockAware;
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}
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};
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static inline int getBytes( CommitTransactionRequest const& r ) {
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// SOMEDAY: Optimize
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//return r.arena.getSize(); // NOT correct because arena can be shared!
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int total = sizeof(r);
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for(auto m = r.transaction.mutations.begin(); m != r.transaction.mutations.end(); ++m)
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total += m->expectedSize();
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for(auto i = r.transaction.read_conflict_ranges.begin(); i != r.transaction.read_conflict_ranges.end(); ++i)
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total += i->expectedSize();
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for(auto i = r.transaction.write_conflict_ranges.begin(); i != r.transaction.write_conflict_ranges.end(); ++i)
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total += i->expectedSize();
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return total;
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}
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struct GetReadVersionReply {
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Version version;
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bool locked;
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template <class Ar>
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void serialize(Ar& ar) {
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ar & version & locked;
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}
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};
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struct GetReadVersionRequest {
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enum {
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PRIORITY_SYSTEM_IMMEDIATE = 15 << 24, // Highest possible priority, always executed even if writes are otherwise blocked
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PRIORITY_DEFAULT = 8 << 24,
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PRIORITY_BATCH = 1 << 24
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};
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enum {
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FLAG_CAUSAL_READ_RISKY = 1,
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FLAG_PRIORITY_MASK = PRIORITY_SYSTEM_IMMEDIATE,
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};
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uint32_t transactionCount;
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uint32_t flags;
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Optional<UID> debugID;
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ReplyPromise<GetReadVersionReply> reply;
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GetReadVersionRequest() : transactionCount( 1 ), flags( PRIORITY_DEFAULT ) {}
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GetReadVersionRequest( uint32_t transactionCount, uint32_t flags, Optional<UID> debugID = Optional<UID>() ) : transactionCount( transactionCount ), flags( flags ), debugID( debugID ) {}
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int priority() const { return flags & FLAG_PRIORITY_MASK; }
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bool operator < (GetReadVersionRequest const& rhs) const { return priority() < rhs.priority(); }
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template <class Ar>
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void serialize(Ar& ar) {
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ar & transactionCount & flags & debugID & reply;
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}
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};
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struct GetKeyServerLocationsReply {
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Arena arena;
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vector<pair<KeyRangeRef, vector<StorageServerInterface>>> results;
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template <class Ar>
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void serialize(Ar& ar) {
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ar & results & arena;
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}
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};
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struct GetKeyServerLocationsRequest {
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Arena arena;
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KeyRef begin;
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Optional<KeyRef> end;
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int limit;
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bool reverse;
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ReplyPromise<GetKeyServerLocationsReply> reply;
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GetKeyServerLocationsRequest() : limit(0), reverse(false) {}
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GetKeyServerLocationsRequest( KeyRef const& begin, Optional<KeyRef> const& end, int limit, bool reverse, Arena const& arena ) : begin( begin ), end( end ), limit( limit ), reverse( reverse ), arena( arena ) {}
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template <class Ar>
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void serialize(Ar& ar) {
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ar & begin & end & limit & reverse & reply & arena;
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}
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};
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struct GetRawCommittedVersionRequest {
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Optional<UID> debugID;
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ReplyPromise<GetReadVersionReply> reply;
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explicit GetRawCommittedVersionRequest(Optional<UID> const& debugID = Optional<UID>()) : debugID(debugID) {}
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template <class Ar>
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void serialize( Ar& ar ) {
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ar & debugID & reply;
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}
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};
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struct GetStorageServerRejoinInfoReply {
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Version version;
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Tag tag;
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template <class Ar>
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void serialize(Ar& ar) {
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ar & version & tag;
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}
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};
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struct GetStorageServerRejoinInfoRequest {
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UID id;
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ReplyPromise< GetStorageServerRejoinInfoReply > reply;
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GetStorageServerRejoinInfoRequest() {}
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explicit GetStorageServerRejoinInfoRequest(UID const& id ) : id(id) {}
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template <class Ar>
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void serialize( Ar& ar ) {
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ar & id & reply;
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}
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};
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struct TxnStateRequest {
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Arena arena;
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VectorRef<KeyValueRef> data;
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Sequence sequence;
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bool last;
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ReplyPromise<Void> reply;
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template <class Ar>
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void serialize(Ar& ar) {
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ar & data & sequence & last & reply & arena;
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}
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};
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#endif
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