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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "proton_disk_layout.h"
#include <vespa/vespalib/io/fileutil.h>
#include <vespa/searchcore/proton/common/doctypename.h>
#include <vespa/searchlib/transactionlog/translogclient.h>
#include <filesystem>
#include <vespa/log/log.h>
LOG_SETUP(".proton.server.proton_disk_layout");
using search::transactionlog::client::TransLogClient;
namespace proton {
namespace {
struct DocumentDBDirMeta
{
bool normal;
bool removed;
DocumentDBDirMeta()
: normal(false),
removed(false)
{
}
};
using DocumentDBDirScan = std::map<DocTypeName, DocumentDBDirMeta>;
vespalib::string getDocumentsDir(const vespalib::string &baseDir)
{
return baseDir + "/documents";
}
vespalib::string removedSuffix(".removed");
vespalib::string getNormalName(const vespalib::string removedName) {
return removedName.substr(0, removedName.size() - removedSuffix.size());
}
vespalib::string getRemovedName(const vespalib::string &normalName)
{
return normalName + removedSuffix;
}
bool isRemovedName(const vespalib::string &dirName)
{
return dirName.size() > removedSuffix.size() && dirName.substr(dirName.size() - removedSuffix.size()) == removedSuffix;
}
void scanDir(const vespalib::string documentsDir, DocumentDBDirScan &dirs)
{
auto names = vespalib::listDirectory(documentsDir);
for (const auto &name : names) {
if (std::filesystem::is_directory(std::filesystem::path(documentsDir + "/" + name))) {
if (isRemovedName(name)) {
dirs[DocTypeName(getNormalName(name))].removed = true;
} else {
dirs[DocTypeName(name)].normal = true;
}
}
}
}
}
ProtonDiskLayout::ProtonDiskLayout(FNET_Transport & transport, const vespalib::string &baseDir, const vespalib::string &tlsSpec)
: _transport(transport),
_baseDir(baseDir),
_tlsSpec(tlsSpec)
{
std::filesystem::create_directories(std::filesystem::path(getDocumentsDir(_baseDir)));
}
ProtonDiskLayout::~ProtonDiskLayout() = default;
void
ProtonDiskLayout::remove(const DocTypeName &docTypeName)
{
vespalib::string documentsDir(getDocumentsDir(_baseDir));
vespalib::string name(docTypeName.toString());
vespalib::string normalDir(documentsDir + "/" + name);
vespalib::string removedDir(documentsDir + "/" + getRemovedName(name));
if (std::filesystem::exists(std::filesystem::path(normalDir))) {
std::filesystem::rename(std::filesystem::path(normalDir), std::filesystem::path(removedDir));
}
vespalib::File::sync(documentsDir);
TransLogClient tlc(_transport, _tlsSpec);
if (!tlc.remove(name)) {
LOG(fatal, "Failed to remove tls domain %s", name.c_str());
LOG_ABORT("Failed to remove tls domain");
}
std::filesystem::remove_all(std::filesystem::path(removedDir));
vespalib::File::sync(documentsDir);
}
void
ProtonDiskLayout::initAndPruneUnused(const std::set<DocTypeName> &docTypeNames)
{
vespalib::string documentsDir(getDocumentsDir(_baseDir));
DocumentDBDirScan dirs;
scanDir(documentsDir, dirs);
for (const auto &dir : dirs) {
if (dir.second.removed) {
// Complete interrupted removal
if (dir.second.normal) {
vespalib::string name(dir.first.toString());
vespalib::string normalDir(documentsDir + "/" + name);
std::filesystem::remove_all(std::filesystem::path(normalDir));
}
remove(dir.first);
} else if (docTypeNames.count(dir.first) == 0) {
// Remove unused directory
remove(dir.first);
}
}
}
} // namespace proton
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