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author | Rajith Muditha Attapattu <rajith@apache.org> | 2011-05-27 15:44:23 +0000 |
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committer | Rajith Muditha Attapattu <rajith@apache.org> | 2011-05-27 15:44:23 +0000 |
commit | 66765100f4257159622cefe57bed50125a5ad017 (patch) | |
tree | a88ee23bb194eb91f0ebb2d9b23ff423e3ea8e37 /qpid/cpp/src/qpid/store/ms-clfs/MSSqlClfsProvider.cpp | |
parent | 1aeaa7b16e5ce54f10c901d75c4d40f9f88b9db6 (diff) | |
parent | 88b98b2f4152ef59a671fad55a0d08338b6b78ca (diff) | |
download | qpid-python-66765100f4257159622cefe57bed50125a5ad017.tar.gz |
Creating a branch for experimenting with some ideas for JMS client.rajith_jms_client
git-svn-id: https://svn.apache.org/repos/asf/qpid/branches/rajith_jms_client@1128369 13f79535-47bb-0310-9956-ffa450edef68
Diffstat (limited to 'qpid/cpp/src/qpid/store/ms-clfs/MSSqlClfsProvider.cpp')
-rw-r--r-- | qpid/cpp/src/qpid/store/ms-clfs/MSSqlClfsProvider.cpp | 1121 |
1 files changed, 1121 insertions, 0 deletions
diff --git a/qpid/cpp/src/qpid/store/ms-clfs/MSSqlClfsProvider.cpp b/qpid/cpp/src/qpid/store/ms-clfs/MSSqlClfsProvider.cpp new file mode 100644 index 0000000000..586aaaf980 --- /dev/null +++ b/qpid/cpp/src/qpid/store/ms-clfs/MSSqlClfsProvider.cpp @@ -0,0 +1,1121 @@ +/* + * + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you 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 <list> +#include <map> +#include <set> +#include <stdlib.h> +#include <string> +#include <windows.h> +#include <clfsw32.h> +#include <qpid/broker/RecoverableQueue.h> +#include <qpid/log/Statement.h> +#include <qpid/store/MessageStorePlugin.h> +#include <qpid/store/StoreException.h> +#include <qpid/store/StorageProvider.h> +#include <qpid/sys/Mutex.h> +#include <boost/foreach.hpp> +#include <boost/make_shared.hpp> + +// From ms-sql... +#include "BlobAdapter.h" +#include "BlobRecordset.h" +#include "BindingRecordset.h" +#include "DatabaseConnection.h" +#include "Exception.h" +#include "State.h" +#include "VariantHelper.h" +using qpid::store::ms_sql::BlobAdapter; +using qpid::store::ms_sql::BlobRecordset; +using qpid::store::ms_sql::BindingRecordset; +using qpid::store::ms_sql::DatabaseConnection; +using qpid::store::ms_sql::ADOException; +using qpid::store::ms_sql::State; +using qpid::store::ms_sql::VariantHelper; + +#include "Log.h" +#include "Messages.h" +#include "Transaction.h" +#include "TransactionLog.h" + +// Bring in ADO 2.8 (yes, I know it says "15", but that's it...) +#import "C:\Program Files\Common Files\System\ado\msado15.dll" \ + no_namespace rename("EOF", "EndOfFile") +#include <comdef.h> +namespace { +inline void TESTHR(HRESULT x) {if FAILED(x) _com_issue_error(x);}; + +// Table names +const std::string TblBinding("tblBinding"); +const std::string TblConfig("tblConfig"); +const std::string TblExchange("tblExchange"); +const std::string TblQueue("tblQueue"); + +} + +namespace qpid { +namespace store { +namespace ms_clfs { + +/** + * @class MSSqlClfsProvider + * + * Implements a qpid::store::StorageProvider that uses a hybrid Microsoft + * SQL Server and Windows CLFS approach as the backend data store for Qpid. + */ +class MSSqlClfsProvider : public qpid::store::StorageProvider +{ +protected: + void finalizeMe(); + + void dump(); + +public: + MSSqlClfsProvider(); + ~MSSqlClfsProvider(); + + virtual qpid::Options* getOptions() { return &options; } + + virtual void earlyInitialize (Plugin::Target& target); + virtual void initialize(Plugin::Target& target); + + /** + * Receive notification that this provider is the one that will actively + * handle provider storage for the target. If the provider is to be used, + * this method will be called after earlyInitialize() and before any + * recovery operations (recovery, in turn, precedes call to initialize()). + */ + virtual void activate(MessageStorePlugin &store); + + /** + * @name Methods inherited from qpid::broker::MessageStore + */ + //@{ + /** + * If called after init() but before recovery, will discard the database + * and reinitialize using an empty store dir. If @a pushDownStoreFiles + * is true, the content of the store dir will be moved to a backup dir + * inside the store dir. This is used when cluster nodes recover and must + * get their content from a cluster sync rather than directly from the + * store. + * + * @param pushDownStoreFiles If true, will move content of the store dir + * into a subdir, leaving the store dir + * otherwise empty. + */ + virtual void truncateInit(const bool pushDownStoreFiles = false); + + /** + * Record the existence of a durable queue + */ + virtual void create(PersistableQueue& queue, + const qpid::framing::FieldTable& args); + /** + * Destroy a durable queue + */ + virtual void destroy(PersistableQueue& queue); + + /** + * Record the existence of a durable exchange + */ + virtual void create(const PersistableExchange& exchange, + const qpid::framing::FieldTable& args); + /** + * Destroy a durable exchange + */ + virtual void destroy(const PersistableExchange& exchange); + + /** + * Record a binding + */ + virtual void bind(const PersistableExchange& exchange, + const PersistableQueue& queue, + const std::string& key, + const qpid::framing::FieldTable& args); + + /** + * Forget a binding + */ + virtual void unbind(const PersistableExchange& exchange, + const PersistableQueue& queue, + const std::string& key, + const qpid::framing::FieldTable& args); + + /** + * Record generic durable configuration + */ + virtual void create(const PersistableConfig& config); + + /** + * Destroy generic durable configuration + */ + virtual void destroy(const PersistableConfig& config); + + /** + * Stores a messages before it has been enqueued + * (enqueueing automatically stores the message so this is + * only required if storage is required prior to that + * point). If the message has not yet been stored it will + * store the headers as well as any content passed in. A + * persistence id will be set on the message which can be + * used to load the content or to append to it. + */ + virtual void stage(const boost::intrusive_ptr<PersistableMessage>& msg); + + /** + * Destroys a previously staged message. This only needs + * to be called if the message is never enqueued. (Once + * enqueued, deletion will be automatic when the message + * is dequeued from all queues it was enqueued onto). + */ + virtual void destroy(PersistableMessage& msg); + + /** + * Appends content to a previously staged message + */ + virtual void appendContent(const boost::intrusive_ptr<const PersistableMessage>& msg, + const std::string& data); + + /** + * Loads (a section) of content data for the specified + * message (previously stored through a call to stage or + * enqueue) into data. The offset refers to the content + * only (i.e. an offset of 0 implies that the start of the + * content should be loaded, not the headers or related + * meta-data). + */ + virtual void loadContent(const qpid::broker::PersistableQueue& queue, + const boost::intrusive_ptr<const PersistableMessage>& msg, + std::string& data, + uint64_t offset, + uint32_t length); + + /** + * Enqueues a message, storing the message if it has not + * been previously stored and recording that the given + * message is on the given queue. + * + * Note: that this is async so the return of the function does + * not mean the opperation is complete. + * + * @param msg the message to enqueue + * @param queue the name of the queue onto which it is to be enqueued + * @param xid (a pointer to) an identifier of the + * distributed transaction in which the operation takes + * place or null for 'local' transactions + */ + virtual void enqueue(qpid::broker::TransactionContext* ctxt, + const boost::intrusive_ptr<PersistableMessage>& msg, + const PersistableQueue& queue); + + /** + * Dequeues a message, recording that the given message is + * no longer on the given queue and deleting the message + * if it is no longer on any other queue. + * + * Note: that this is async so the return of the function does + * not mean the opperation is complete. + * + * @param msg the message to dequeue + * @param queue the name of the queue from which it is to be dequeued + * @param xid (a pointer to) an identifier of the + * distributed transaction in which the operation takes + * place or null for 'local' transactions + */ + virtual void dequeue(qpid::broker::TransactionContext* ctxt, + const boost::intrusive_ptr<PersistableMessage>& msg, + const PersistableQueue& queue); + + /** + * Flushes all async messages to disk for the specified queue + * + * Note: this is a no-op for this provider. + * + * @param queue the name of the queue from which it is to be dequeued + */ + virtual void flush(const PersistableQueue& queue) {}; + + /** + * Returns the number of outstanding AIO's for a given queue + * + * If 0, than all the enqueue / dequeues have been stored + * to disk + * + * @param queue the name of the queue to check for outstanding AIO + */ + virtual uint32_t outstandingQueueAIO(const PersistableQueue& queue) + {return 0;} + //@} + + /** + * @name Methods inherited from qpid::broker::TransactionalStore + */ + //@{ + virtual std::auto_ptr<qpid::broker::TransactionContext> begin(); + virtual std::auto_ptr<qpid::broker::TPCTransactionContext> begin(const std::string& xid); + virtual void prepare(qpid::broker::TPCTransactionContext& txn); + virtual void commit(qpid::broker::TransactionContext& txn); + virtual void abort(qpid::broker::TransactionContext& txn); + virtual void collectPreparedXids(std::set<std::string>& xids); + //@} + + virtual void recoverConfigs(qpid::broker::RecoveryManager& recoverer); + virtual void recoverExchanges(qpid::broker::RecoveryManager& recoverer, + ExchangeMap& exchangeMap); + virtual void recoverQueues(qpid::broker::RecoveryManager& recoverer, + QueueMap& queueMap); + virtual void recoverBindings(qpid::broker::RecoveryManager& recoverer, + const ExchangeMap& exchangeMap, + const QueueMap& queueMap); + virtual void recoverMessages(qpid::broker::RecoveryManager& recoverer, + MessageMap& messageMap, + MessageQueueMap& messageQueueMap); + virtual void recoverTransactions(qpid::broker::RecoveryManager& recoverer, + PreparedTransactionMap& dtxMap); + +private: + struct ProviderOptions : public qpid::Options + { + std::string connectString; + std::string catalogName; + std::string storeDir; + size_t containerSize; + unsigned short initialContainers; + uint32_t maxWriteBuffers; + + ProviderOptions(const std::string &name) + : qpid::Options(name), + catalogName("QpidStore"), + containerSize(1024 * 1024), + initialContainers(2), + maxWriteBuffers(10) + { + const enum { NAMELEN = MAX_COMPUTERNAME_LENGTH + 1 }; + TCHAR myName[NAMELEN]; + DWORD myNameLen = NAMELEN; + GetComputerName(myName, &myNameLen); + connectString = "Data Source="; + connectString += myName; + connectString += "\\SQLEXPRESS;Integrated Security=SSPI"; + addOptions() + ("connect", + qpid::optValue(connectString, "STRING"), + "Connection string for the database to use. Will prepend " + "Provider=SQLOLEDB;") + ("catalog", + qpid::optValue(catalogName, "DB NAME"), + "Catalog (database) name") + ("store-dir", + qpid::optValue(storeDir, "DIR"), + "Location to store message and transaction data " + "(default uses data-dir if available)") + ("container-size", + qpid::optValue(containerSize, "VALUE"), + "Bytes per container; min 512K. Only used when creating " + "a new log") + ("initial-containers", + qpid::optValue(initialContainers, "VALUE"), + "Number of containers to add if creating a new log") + ("max-write-buffers", + qpid::optValue(maxWriteBuffers, "VALUE"), + "Maximum write buffers outstanding before log is flushed " + "(0 means no limit)") + ; + } + }; + ProviderOptions options; + std::string brokerDataDir; + Messages messages; + // TransactionLog requires itself to have a shared_ptr reference to start. + TransactionLog::shared_ptr transactions; + + // Each thread has a separate connection to the database and also needs + // to manage its COM initialize/finalize individually. This is done by + // keeping a thread-specific State. + boost::thread_specific_ptr<State> dbState; + + State *initState(); + DatabaseConnection *initConnection(void); + void createDb(DatabaseConnection *db, const std::string &name); + void createLogs(); +}; + +static MSSqlClfsProvider static_instance_registers_plugin; + +void +MSSqlClfsProvider::finalizeMe() +{ + dbState.reset(); +} + +MSSqlClfsProvider::MSSqlClfsProvider() + : options("MS SQL/CLFS Provider options") +{ + transactions = boost::make_shared<TransactionLog>(); +} + +MSSqlClfsProvider::~MSSqlClfsProvider() +{ +} + +void +MSSqlClfsProvider::earlyInitialize(Plugin::Target &target) +{ + MessageStorePlugin *store = dynamic_cast<MessageStorePlugin *>(&target); + if (store) { + // Check the store dir option; if not specified, need to + // grab the broker's data dir. + if (options.storeDir.empty()) { + DataDir& dir = store->getBroker()->getDataDir(); + if (dir.isEnabled()) { + options.storeDir = dir.getPath(); + } + else { + QPID_LOG(error, + "MSSQL-CLFS: --store-dir required if --no-data-dir specified"); + return; + } + } + + // If CLFS is not available on this system, give up now. + try { + Log::TuningParameters params; + params.containerSize = options.containerSize; + params.containers = options.initialContainers; + params.shrinkPct = 50; + params.maxWriteBuffers = options.maxWriteBuffers; + std::string msgPath = options.storeDir + "\\" + "messages"; + messages.openLog(msgPath, params); + std::string transPath = options.storeDir + "\\" + "transactions"; + transactions->open(transPath, params); + } + catch (std::exception &e) { + QPID_LOG(error, e.what()); + return; + } + + // If the database init fails, report it and don't register; give + // the rest of the broker a chance to run. + // + // Don't try to initConnection() since that will fail if the + // database doesn't exist. Instead, try to open a connection without + // a database name, then search for the database. There's still a + // chance this provider won't be selected for the store too, so be + // be sure to close the database connection before return to avoid + // leaving a connection up that will not be used. + try { + initState(); // This initializes COM + std::auto_ptr<DatabaseConnection> db(new DatabaseConnection()); + db->open(options.connectString, ""); + _ConnectionPtr conn(*db); + _RecordsetPtr pCatalogs = NULL; + VariantHelper<std::string> catalogName(options.catalogName); + pCatalogs = conn->OpenSchema(adSchemaCatalogs, catalogName); + if (pCatalogs->EndOfFile) { + // Database doesn't exist; create it + QPID_LOG(notice, + "MSSQL-CLFS: Creating database " + options.catalogName); + createDb(db.get(), options.catalogName); + } + else { + QPID_LOG(notice, + "MSSQL-CLFS: Database located: " + options.catalogName); + } + if (pCatalogs) { + if (pCatalogs->State == adStateOpen) + pCatalogs->Close(); + pCatalogs = 0; + } + db->close(); + store->providerAvailable("MSSQL-CLFS", this); + } + catch (qpid::Exception &e) { + QPID_LOG(error, e.what()); + return; + } + store->addFinalizer(boost::bind(&MSSqlClfsProvider::finalizeMe, this)); + } +} + +void +MSSqlClfsProvider::initialize(Plugin::Target& target) +{ +} + +void +MSSqlClfsProvider::activate(MessageStorePlugin &store) +{ + QPID_LOG(info, "MS SQL/CLFS Provider is up"); +} + +void +MSSqlClfsProvider::truncateInit(const bool pushDownStoreFiles) +{ +} + +void +MSSqlClfsProvider::create(PersistableQueue& queue, + const qpid::framing::FieldTable& /*args needed for jrnl*/) +{ + DatabaseConnection *db = initConnection(); + BlobRecordset rsQueues; + try { + db->beginTransaction(); + rsQueues.open(db, TblQueue); + rsQueues.add(queue); + db->commitTransaction(); + } + catch(_com_error &e) { + std::string errs = db->getErrors(); + db->rollbackTransaction(); + throw ADOException("Error creating queue " + queue.getName(), e, errs); + } + catch(std::exception& e) { + db->rollbackTransaction(); + THROW_STORE_EXCEPTION(e.what()); + } +} + +/** + * Destroy a durable queue + */ +void +MSSqlClfsProvider::destroy(PersistableQueue& queue) +{ + DatabaseConnection *db = initConnection(); + BlobRecordset rsQueues; + BindingRecordset rsBindings; + try { + db->beginTransaction(); + rsQueues.open(db, TblQueue); + rsBindings.open(db, TblBinding); + // Remove bindings first; the queue IDs can't be ripped out from + // under the references in the bindings table. + rsBindings.removeForQueue(queue.getPersistenceId()); + rsQueues.remove(queue); + db->commitTransaction(); + } + catch(_com_error &e) { + std::string errs = db->getErrors(); + db->rollbackTransaction(); + throw ADOException("Error deleting queue " + queue.getName(), e, errs); + } + + /* + * Now that the SQL stuff has recorded the queue deletion, expunge + * all record of the queue from the messages set. Any errors logging + * these removals are swallowed because during a recovery the queue + * Id won't be present (the SQL stuff already committed) so any references + * to it in message operations will be removed. + */ + messages.expunge(queue.getPersistenceId()); +} + +/** + * Record the existence of a durable exchange + */ +void +MSSqlClfsProvider::create(const PersistableExchange& exchange, + const qpid::framing::FieldTable& args) +{ + DatabaseConnection *db = initConnection(); + BlobRecordset rsExchanges; + try { + db->beginTransaction(); + rsExchanges.open(db, TblExchange); + rsExchanges.add(exchange); + db->commitTransaction(); + } + catch(_com_error &e) { + std::string errs = db->getErrors(); + db->rollbackTransaction(); + throw ADOException("Error creating exchange " + exchange.getName(), + e, + errs); + } +} + +/** + * Destroy a durable exchange + */ +void +MSSqlClfsProvider::destroy(const PersistableExchange& exchange) +{ + DatabaseConnection *db = initConnection(); + BlobRecordset rsExchanges; + BindingRecordset rsBindings; + try { + db->beginTransaction(); + rsExchanges.open(db, TblExchange); + rsBindings.open(db, TblBinding); + // Remove bindings first; the exchange IDs can't be ripped out from + // under the references in the bindings table. + rsBindings.removeForExchange(exchange.getPersistenceId()); + rsExchanges.remove(exchange); + db->commitTransaction(); + } + catch(_com_error &e) { + std::string errs = db->getErrors(); + db->rollbackTransaction(); + throw ADOException("Error deleting exchange " + exchange.getName(), + e, + errs); + } +} + +/** + * Record a binding + */ +void +MSSqlClfsProvider::bind(const PersistableExchange& exchange, + const PersistableQueue& queue, + const std::string& key, + const qpid::framing::FieldTable& args) +{ + DatabaseConnection *db = initConnection(); + BindingRecordset rsBindings; + try { + db->beginTransaction(); + rsBindings.open(db, TblBinding); + rsBindings.add(exchange.getPersistenceId(), + queue.getPersistenceId(), + key, + args); + db->commitTransaction(); + } + catch(_com_error &e) { + std::string errs = db->getErrors(); + db->rollbackTransaction(); + throw ADOException("Error binding exchange " + exchange.getName() + + " to queue " + queue.getName(), + e, + errs); + } +} + +/** + * Forget a binding + */ +void +MSSqlClfsProvider::unbind(const PersistableExchange& exchange, + const PersistableQueue& queue, + const std::string& key, + const qpid::framing::FieldTable& args) +{ + DatabaseConnection *db = initConnection(); + BindingRecordset rsBindings; + try { + db->beginTransaction(); + rsBindings.open(db, TblBinding); + rsBindings.remove(exchange.getPersistenceId(), + queue.getPersistenceId(), + key, + args); + db->commitTransaction(); + } + catch(_com_error &e) { + std::string errs = db->getErrors(); + db->rollbackTransaction(); + throw ADOException("Error unbinding exchange " + exchange.getName() + + " from queue " + queue.getName(), + e, + errs); + } +} + +/** + * Record generic durable configuration + */ +void +MSSqlClfsProvider::create(const PersistableConfig& config) +{ + DatabaseConnection *db = initConnection(); + BlobRecordset rsConfigs; + try { + db->beginTransaction(); + rsConfigs.open(db, TblConfig); + rsConfigs.add(config); + db->commitTransaction(); + } + catch(_com_error &e) { + std::string errs = db->getErrors(); + db->rollbackTransaction(); + throw ADOException("Error creating config " + config.getName(), e, errs); + } +} + +/** + * Destroy generic durable configuration + */ +void +MSSqlClfsProvider::destroy(const PersistableConfig& config) +{ + DatabaseConnection *db = initConnection(); + BlobRecordset rsConfigs; + try { + db->beginTransaction(); + rsConfigs.open(db, TblConfig); + rsConfigs.remove(config); + db->commitTransaction(); + } + catch(_com_error &e) { + std::string errs = db->getErrors(); + db->rollbackTransaction(); + throw ADOException("Error deleting config " + config.getName(), e, errs); + } +} + +/** + * Stores a messages before it has been enqueued + * (enqueueing automatically stores the message so this is + * only required if storage is required prior to that + * point). If the message has not yet been stored it will + * store the headers as well as any content passed in. A + * persistence id will be set on the message which can be + * used to load the content or to append to it. + */ +void +MSSqlClfsProvider::stage(const boost::intrusive_ptr<PersistableMessage>& msg) +{ +#if 0 + DatabaseConnection *db = initConnection(); + MessageRecordset rsMessages; + try { + db->beginTransaction(); + rsMessages.open(db, TblMessage); + rsMessages.add(msg); + db->commitTransaction(); + } + catch(_com_error &e) { + std::string errs = db->getErrors(); + db->rollbackTransaction(); + throw ADOException("Error staging message", e, errs); + } +#endif +} + +/** + * Destroys a previously staged message. This only needs + * to be called if the message is never enqueued. (Once + * enqueued, deletion will be automatic when the message + * is dequeued from all queues it was enqueued onto). + */ +void +MSSqlClfsProvider::destroy(PersistableMessage& msg) +{ +#if 0 + DatabaseConnection *db = initConnection(); + BlobRecordset rsMessages; + try { + db->beginTransaction(); + rsMessages.open(db, TblMessage); + rsMessages.remove(msg); + db->commitTransaction(); + } + catch(_com_error &e) { + std::string errs = db->getErrors(); + db->rollbackTransaction(); + throw ADOException("Error deleting message", e, errs); + } +#endif +} + +/** + * Appends content to a previously staged message + */ +void +MSSqlClfsProvider::appendContent(const boost::intrusive_ptr<const PersistableMessage>& msg, + const std::string& data) +{ +#if 0 + DatabaseConnection *db = initConnection(); + MessageRecordset rsMessages; + try { + db->beginTransaction(); + rsMessages.open(db, TblMessage); + rsMessages.append(msg, data); + db->commitTransaction(); + } + catch(_com_error &e) { + std::string errs = db->getErrors(); + db->rollbackTransaction(); + throw ADOException("Error appending to message", e, errs); + } +#endif +} + +/** + * Loads (a section) of content data for the specified + * message (previously stored through a call to stage or + * enqueue) into data. The offset refers to the content + * only (i.e. an offset of 0 implies that the start of the + * content should be loaded, not the headers or related + * meta-data). + */ +void +MSSqlClfsProvider::loadContent(const qpid::broker::PersistableQueue& /*queue*/, + const boost::intrusive_ptr<const PersistableMessage>& msg, + std::string& data, + uint64_t offset, + uint32_t length) +{ + // Message log keeps all messages in one log, so we don't need the + // queue reference. + messages.loadContent(msg->getPersistenceId(), data, offset, length); +} + +/** + * Enqueues a message, storing the message if it has not + * been previously stored and recording that the given + * message is on the given queue. + * + * @param ctxt The transaction context under which this enqueue happens. + * @param msg The message to enqueue + * @param queue the name of the queue onto which it is to be enqueued + */ +void +MSSqlClfsProvider::enqueue(qpid::broker::TransactionContext* ctxt, + const boost::intrusive_ptr<PersistableMessage>& msg, + const PersistableQueue& queue) +{ + Transaction::shared_ptr t; + TransactionContext *ctx = dynamic_cast<TransactionContext*>(ctxt); + if (ctx) + t = ctx->getTransaction(); + else { + TPCTransactionContext *tctx; + tctx = dynamic_cast<TPCTransactionContext*>(ctxt); + if (tctx) + t = tctx->getTransaction(); + } + uint64_t msgId = msg->getPersistenceId(); + if (msgId == 0) { + messages.add(msg); + msgId = msg->getPersistenceId(); + } + messages.enqueue(msgId, queue.getPersistenceId(), t); + msg->enqueueComplete(); +} + +/** + * Dequeues a message, recording that the given message is + * no longer on the given queue and deleting the message + * if it is no longer on any other queue. + * + * @param ctxt The transaction context under which this dequeue happens. + * @param msg The message to dequeue + * @param queue The queue from which it is to be dequeued + */ +void +MSSqlClfsProvider::dequeue(qpid::broker::TransactionContext* ctxt, + const boost::intrusive_ptr<PersistableMessage>& msg, + const PersistableQueue& queue) +{ + Transaction::shared_ptr t; + TransactionContext *ctx = dynamic_cast<TransactionContext*>(ctxt); + if (ctx) + t = ctx->getTransaction(); + else { + TPCTransactionContext *tctx; + tctx = dynamic_cast<TPCTransactionContext*>(ctxt); + if (tctx) + t = tctx->getTransaction(); + } + messages.dequeue(msg->getPersistenceId(), queue.getPersistenceId(), t); + msg->dequeueComplete(); +} + +std::auto_ptr<qpid::broker::TransactionContext> +MSSqlClfsProvider::begin() +{ + Transaction::shared_ptr t = transactions->begin(); + std::auto_ptr<qpid::broker::TransactionContext> tc(new TransactionContext(t)); + return tc; +} + +std::auto_ptr<qpid::broker::TPCTransactionContext> +MSSqlClfsProvider::begin(const std::string& xid) +{ + TPCTransaction::shared_ptr t = transactions->begin(xid); + std::auto_ptr<qpid::broker::TPCTransactionContext> tc(new TPCTransactionContext(t)); + return tc; +} + +void +MSSqlClfsProvider::prepare(qpid::broker::TPCTransactionContext& txn) +{ + TPCTransactionContext *ctx = dynamic_cast<TPCTransactionContext*> (&txn); + if (ctx == 0) + throw qpid::broker::InvalidTransactionContextException(); + ctx->getTransaction()->prepare(); +} + +void +MSSqlClfsProvider::commit(qpid::broker::TransactionContext& txn) +{ + Transaction::shared_ptr t; + TransactionContext *ctx = dynamic_cast<TransactionContext*>(&txn); + if (ctx) + t = ctx->getTransaction(); + else { + TPCTransactionContext *tctx; + tctx = dynamic_cast<TPCTransactionContext*>(&txn); + if (tctx == 0) + throw qpid::broker::InvalidTransactionContextException(); + t = tctx->getTransaction(); + } + t->commit(messages); +} + +void +MSSqlClfsProvider::abort(qpid::broker::TransactionContext& txn) +{ + Transaction::shared_ptr t; + TransactionContext *ctx = dynamic_cast<TransactionContext*>(&txn); + if (ctx) + t = ctx->getTransaction(); + else { + TPCTransactionContext *tctx; + tctx = dynamic_cast<TPCTransactionContext*>(&txn); + if (tctx == 0) + throw qpid::broker::InvalidTransactionContextException(); + t = tctx->getTransaction(); + } + t->abort(messages); +} + +void +MSSqlClfsProvider::collectPreparedXids(std::set<std::string>& xids) +{ + std::map<std::string, TPCTransaction::shared_ptr> preparedMap; + transactions->collectPreparedXids(preparedMap); + std::map<std::string, TPCTransaction::shared_ptr>::const_iterator i; + for (i = preparedMap.begin(); i != preparedMap.end(); ++i) { + xids.insert(i->first); + } +} + +// @TODO Much of this recovery code is way too similar... refactor to +// a recover template method on BlobRecordset. + +void +MSSqlClfsProvider::recoverConfigs(qpid::broker::RecoveryManager& recoverer) +{ + DatabaseConnection *db = initConnection(); + BlobRecordset rsConfigs; + rsConfigs.open(db, TblConfig); + _RecordsetPtr p = (_RecordsetPtr)rsConfigs; + if (p->BOF && p->EndOfFile) + return; // Nothing to do + p->MoveFirst(); + while (!p->EndOfFile) { + uint64_t id = p->Fields->Item["persistenceId"]->Value; + long blobSize = p->Fields->Item["fieldTableBlob"]->ActualSize; + BlobAdapter blob(blobSize); + blob = p->Fields->Item["fieldTableBlob"]->GetChunk(blobSize); + // Recreate the Config instance and reset its ID. + broker::RecoverableConfig::shared_ptr config = + recoverer.recoverConfig(blob); + config->setPersistenceId(id); + p->MoveNext(); + } +} + +void +MSSqlClfsProvider::recoverExchanges(qpid::broker::RecoveryManager& recoverer, + ExchangeMap& exchangeMap) +{ + DatabaseConnection *db = initConnection(); + BlobRecordset rsExchanges; + rsExchanges.open(db, TblExchange); + _RecordsetPtr p = (_RecordsetPtr)rsExchanges; + if (p->BOF && p->EndOfFile) + return; // Nothing to do + p->MoveFirst(); + while (!p->EndOfFile) { + uint64_t id = p->Fields->Item["persistenceId"]->Value; + long blobSize = p->Fields->Item["fieldTableBlob"]->ActualSize; + BlobAdapter blob(blobSize); + blob = p->Fields->Item["fieldTableBlob"]->GetChunk(blobSize); + // Recreate the Exchange instance, reset its ID, and remember the + // ones restored for matching up when recovering bindings. + broker::RecoverableExchange::shared_ptr exchange = + recoverer.recoverExchange(blob); + exchange->setPersistenceId(id); + exchangeMap[id] = exchange; + p->MoveNext(); + } +} + +void +MSSqlClfsProvider::recoverQueues(qpid::broker::RecoveryManager& recoverer, + QueueMap& queueMap) +{ + DatabaseConnection *db = initConnection(); + BlobRecordset rsQueues; + rsQueues.open(db, TblQueue); + _RecordsetPtr p = (_RecordsetPtr)rsQueues; + if (p->BOF && p->EndOfFile) + return; // Nothing to do + p->MoveFirst(); + while (!p->EndOfFile) { + uint64_t id = p->Fields->Item["persistenceId"]->Value; + long blobSize = p->Fields->Item["fieldTableBlob"]->ActualSize; + BlobAdapter blob(blobSize); + blob = p->Fields->Item["fieldTableBlob"]->GetChunk(blobSize); + // Recreate the Queue instance and reset its ID. + broker::RecoverableQueue::shared_ptr queue = + recoverer.recoverQueue(blob); + queue->setPersistenceId(id); + queueMap[id] = queue; + p->MoveNext(); + } +} + +void +MSSqlClfsProvider::recoverBindings(qpid::broker::RecoveryManager& recoverer, + const ExchangeMap& exchangeMap, + const QueueMap& queueMap) +{ + DatabaseConnection *db = initConnection(); + BindingRecordset rsBindings; + rsBindings.open(db, TblBinding); + rsBindings.recover(recoverer, exchangeMap, queueMap); +} + +void +MSSqlClfsProvider::recoverMessages(qpid::broker::RecoveryManager& recoverer, + MessageMap& messageMap, + MessageQueueMap& messageQueueMap) +{ + // Read the list of valid queue Ids to ensure that no broken msg->queue + // refs get restored. + DatabaseConnection *db = initConnection(); + BlobRecordset rsQueues; + rsQueues.open(db, TblQueue); + _RecordsetPtr p = (_RecordsetPtr)rsQueues; + std::set<uint64_t> validQueues; + if (!(p->BOF && p->EndOfFile)) { + p->MoveFirst(); + while (!p->EndOfFile) { + uint64_t id = p->Fields->Item["persistenceId"]->Value; + validQueues.insert(id); + p->MoveNext(); + } + } + std::map<uint64_t, Transaction::shared_ptr> transMap; + transactions->recover(transMap); + messages.recover(recoverer, + validQueues, + transMap, + messageMap, + messageQueueMap); +} + +void +MSSqlClfsProvider::recoverTransactions(qpid::broker::RecoveryManager& recoverer, + PreparedTransactionMap& dtxMap) +{ + std::map<std::string, TPCTransaction::shared_ptr> preparedMap; + transactions->collectPreparedXids(preparedMap); + std::map<std::string, TPCTransaction::shared_ptr>::const_iterator i; + for (i = preparedMap.begin(); i != preparedMap.end(); ++i) { + std::auto_ptr<TPCTransactionContext> ctx(new TPCTransactionContext(i->second)); + std::auto_ptr<qpid::broker::TPCTransactionContext> brokerCtx(ctx); + dtxMap[i->first] = recoverer.recoverTransaction(i->first, brokerCtx); + } +} + +////////////// Internal Methods + +State * +MSSqlClfsProvider::initState() +{ + State *state = dbState.get(); // See if thread has initialized + if (!state) { + state = new State; + dbState.reset(state); + } + return state; +} + +DatabaseConnection * +MSSqlClfsProvider::initConnection(void) +{ + State *state = initState(); + if (state->dbConn != 0) + return state->dbConn; // And the DatabaseConnection is set up too + std::auto_ptr<DatabaseConnection> db(new DatabaseConnection); + db->open(options.connectString, options.catalogName); + state->dbConn = db.release(); + return state->dbConn; +} + +void +MSSqlClfsProvider::createDb(DatabaseConnection *db, const std::string &name) +{ + const std::string dbCmd = "CREATE DATABASE " + name; + const std::string useCmd = "USE " + name; + const std::string tableCmd = "CREATE TABLE "; + const std::string colSpecs = + " (persistenceId bigint PRIMARY KEY NOT NULL IDENTITY(1,1)," + " fieldTableBlob varbinary(MAX) NOT NULL)"; + const std::string bindingSpecs = + " (exchangeId bigint REFERENCES tblExchange(persistenceId) NOT NULL," + " queueId bigint REFERENCES tblQueue(persistenceId) NOT NULL," + " routingKey varchar(255)," + " fieldTableBlob varbinary(MAX))"; + + _variant_t unused; + _bstr_t dbStr = dbCmd.c_str(); + _ConnectionPtr conn(*db); + try { + conn->Execute(dbStr, &unused, adExecuteNoRecords); + _bstr_t useStr = useCmd.c_str(); + conn->Execute(useStr, &unused, adExecuteNoRecords); + std::string makeTable = tableCmd + TblQueue + colSpecs; + _bstr_t makeTableStr = makeTable.c_str(); + conn->Execute(makeTableStr, &unused, adExecuteNoRecords); + makeTable = tableCmd + TblExchange + colSpecs; + makeTableStr = makeTable.c_str(); + conn->Execute(makeTableStr, &unused, adExecuteNoRecords); + makeTable = tableCmd + TblConfig + colSpecs; + makeTableStr = makeTable.c_str(); + conn->Execute(makeTableStr, &unused, adExecuteNoRecords); + makeTable = tableCmd + TblBinding + bindingSpecs; + makeTableStr = makeTable.c_str(); + conn->Execute(makeTableStr, &unused, adExecuteNoRecords); + } + catch(_com_error &e) { + throw ADOException("MSSQL can't create " + name, e, db->getErrors()); + } +} + +void +MSSqlClfsProvider::dump() +{ + // dump all db records to qpid_log + QPID_LOG(notice, "DB Dump: (not dumping anything)"); + // rsQueues.dump(); +} + + +}}} // namespace qpid::store::ms_sql |