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227
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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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5 * Copyright (C) 2017-2021 Osimis S.A., Belgium
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6 *
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7 * This program is free software: you can redistribute it and/or
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8 * modify it under the terms of the GNU Affero General Public License
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9 * as published by the Free Software Foundation, either version 3 of
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10 * the License, or (at your option) any later version.
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11 *
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12 * This program is distributed in the hope that it will be useful, but
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13 * WITHOUT ANY WARRANTY; without even the implied warranty of
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 * Affero General Public License for more details.
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16 *
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17 * You should have received a copy of the GNU Affero General Public License
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18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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19 **/
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20
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21
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22 #include "RetryDatabaseFactory.h"
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23
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24 #include <Logging.h>
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25 #include <OrthancException.h>
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26
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27 #include <boost/thread.hpp>
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28
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29
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30 namespace OrthancDatabases
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31 {
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32 IDatabase* RetryDatabaseFactory::Open()
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33 {
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34 unsigned int count = 0;
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35
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36 for (;;)
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37 {
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38 try
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39 {
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40 return TryOpen();
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41 }
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42 catch (Orthanc::OrthancException& e)
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43 {
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44 if (e.GetErrorCode() == Orthanc::ErrorCode_DatabaseUnavailable)
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45 {
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46 count ++;
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47
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48 if (count <= maxConnectionRetries_)
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49 {
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50 LOG(WARNING) << "Database is currently unavailable, retrying...";
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51 boost::this_thread::sleep(boost::posix_time::seconds(connectionRetryInterval_));
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52 continue;
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53 }
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54 else
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55 {
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56 LOG(ERROR) << "Timeout when connecting to the database, giving up";
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57 }
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58 }
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59
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60 throw;
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61 }
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62 }
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63 }
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64 }
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