1 files changed, 131 insertions, 0 deletions
diff --git a/cpp/src/qpid/linearstore/jrnl/EmptyFilePoolPartition.cpp b/cpp/src/qpid/linearstore/jrnl/EmptyFilePoolPartition.cpp
new file mode 100644
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+++ b/cpp/src/qpid/linearstore/jrnl/EmptyFilePoolPartition.cpp
@@ -0,0 +1,131 @@
+/*
+ *
+ * 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 "qpid/linearstore/jrnl/EmptyFilePoolPartition.h"
+
+#include <dirent.h>
+#include "qpid/linearstore/jrnl/jdir.h"
+#include "qpid/linearstore/jrnl/jerrno.h"
+#include "qpid/linearstore/jrnl/jexception.h"
+#include "qpid/linearstore/jrnl/slock.h"
+
+namespace qpid {
+namespace qls_jrnl {
+
+// static
+const std::string EmptyFilePoolPartition::s_efpTopLevelDir_("efp"); // Sets the top-level efp dir within a partition
+
+EmptyFilePoolPartition::EmptyFilePoolPartition(const efpPartitionNumber_t partitionNum,
+                                               const std::string& partitionDir,
+                                               JournalLog& journalLogRef) :
+                partitionNum_(partitionNum),
+                partitionDir_(partitionDir),
+                journalLogRef_(journalLogRef)
+{
+    validatePartitionDir();
+}
+
+EmptyFilePoolPartition::~EmptyFilePoolPartition() {
+    slock l(efpMapMutex_);
+    for (efpMapItr_t i = efpMap_.begin(); i != efpMap_.end(); ++i) {
+        delete i->second;
+    }
+    efpMap_.clear();
+}
+
+void
+EmptyFilePoolPartition::findEmptyFilePools() {
+    //std::cout << "Reading " << partitionDir << std::endl; // DEBUG
+    std::vector<std::string> dirList;
+    jdir::read_dir(partitionDir_, dirList, true, false, false, false);
+    bool foundEfpDir = false;
+    for (std::vector<std::string>::iterator i = dirList.begin(); i != dirList.end(); ++i) {
+        if (i->compare(s_efpTopLevelDir_) == 0) {
+            foundEfpDir = true;
+            break;
+        }
+    }
+    if (foundEfpDir) {
+        std::string efpDir(partitionDir_ + "/" + s_efpTopLevelDir_);
+        //std::cout << "Reading " << efpDir << std::endl; // DEBUG
+        dirList.clear();
+        jdir::read_dir(efpDir, dirList, true, false, false, true);
+        for (std::vector<std::string>::iterator i = dirList.begin(); i != dirList.end(); ++i) {
+            EmptyFilePool* efpp = 0;
+            try {
+                efpp = new EmptyFilePool(*i, this, journalLogRef_);
+                {
+                    slock l(efpMapMutex_);
+                    efpMap_[efpp->dataSize_kib()] = efpp;
+                }
+            }
+            catch (const std::exception& e) {
+                if (efpp != 0) {
+                    delete efpp;
+                    efpp = 0;
+                }
+                //std::cerr << "WARNING: " << e.what() << std::endl;
+            }
+            if (efpp != 0)
+                efpp->initialize();
+        }
+    }
+}
+
+EmptyFilePool* EmptyFilePoolPartition::getEmptyFilePool(const efpDataSize_kib_t efpDataSize_kib) {
+    efpMapItr_t i = efpMap_.find(efpDataSize_kib);
+    if (i == efpMap_.end())
+        return 0;
+    return i->second;
+}
+
+void EmptyFilePoolPartition::getEmptyFilePools(std::vector<EmptyFilePool*>& efpList) {
+    for (efpMapItr_t i=efpMap_.begin(); i!=efpMap_.end(); ++i) {
+        efpList.push_back(i->second);
+    }
+}
+
+void EmptyFilePoolPartition::getEmptyFilePoolSizes_kib(std::vector<efpDataSize_kib_t>& efpDataSizesList_kib) const {
+    for (efpMapConstItr_t i=efpMap_.begin(); i!=efpMap_.end(); ++i) {
+        efpDataSizesList_kib.push_back(i->first);
+    }
+}
+
+std::string EmptyFilePoolPartition::getPartitionDirectory() const {
+    return partitionDir_;
+}
+
+efpPartitionNumber_t EmptyFilePoolPartition::getPartitionNumber() const {
+    return partitionNum_;
+}
+
+// --- protected functions ---
+
+void EmptyFilePoolPartition::validatePartitionDir() {
+    if (!jdir::is_dir(partitionDir_)) {
+        std::ostringstream ss;
+        ss << "Invalid partition directory: \'" << partitionDir_ << "\' is not a directory";
+        throw jexception(jerrno::JERR_EFP_BADPARTITIONDIR, ss.str(), "EmptyFilePoolPartition", "validatePartitionDir");
+    }
+    // TODO: other validity checks here
+}
+
+}} // namespace qpid::qls_jrnl