ClickHouse/utils/keeper-data-dumper/main.cpp

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#include <Poco/ConsoleChannel.h>
#include <Poco/Logger.h>
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#include <Coordination/KeeperStateMachine.h>
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#include <Common/ZooKeeper/ZooKeeperCommon.h>
#include <Common/ZooKeeper/ZooKeeperIO.h>
#include <Common/Exception.h>
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#include <libnuraft/nuraft.hxx>
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#include <Coordination/KeeperLogStore.h>
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#include <Coordination/Changelog.h>
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#include <Common/logger_useful.h>
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#include <Disks/DiskLocal.h>
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using namespace Coordination;
using namespace DB;
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void dumpMachine(std::shared_ptr<KeeperStateMachine> machine)
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{
auto & storage = machine->getStorage();
std::queue<std::string> keys;
keys.push("/");
while (!keys.empty())
{
auto key = keys.front();
keys.pop();
std::cout << key << "\n";
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auto value = storage.container.getValue(key);
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std::cout << "\tStat: {version: " << value.stat.version <<
", mtime: " << value.stat.mtime <<
", emphemeralOwner: " << value.stat.ephemeralOwner <<
", czxid: " << value.stat.czxid <<
", mzxid: " << value.stat.mzxid <<
", numChildren: " << value.stat.numChildren <<
", dataLength: " << value.stat.dataLength <<
"}" << std::endl;
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std::cout << "\tData: " << storage.container.getValue(key).getData() << std::endl;
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for (const auto & child : value.getChildren())
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{
if (key == "/")
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keys.push(key + child.toString());
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else
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keys.push(key + "/" + child.toString());
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}
}
std::cout << std::flush;
}
int main(int argc, char *argv[])
{
if (argc != 3)
{
std::cerr << "usage: " << argv[0] << " snapshotpath logpath" << std::endl;
return 3;
}
else
{
Poco::AutoPtr<Poco::ConsoleChannel> channel(new Poco::ConsoleChannel(std::cerr));
Poco::Logger::root().setChannel(channel);
Poco::Logger::root().setLevel("trace");
}
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auto * logger = &Poco::Logger::get("keeper-dumper");
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ResponsesQueue queue(std::numeric_limits<size_t>::max());
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SnapshotsQueue snapshots_queue{1};
CoordinationSettingsPtr settings = std::make_shared<CoordinationSettings>();
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KeeperContextPtr keeper_context = std::make_shared<DB::KeeperContext>(true);
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keeper_context->setLogDisk(std::make_shared<DB::DiskLocal>("LogDisk", argv[2]));
keeper_context->setSnapshotDisk(std::make_shared<DB::DiskLocal>("LogDisk", argv[1]));
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auto state_machine = std::make_shared<KeeperStateMachine>(queue, snapshots_queue, settings, keeper_context, nullptr);
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state_machine->init();
size_t last_commited_index = state_machine->last_commit_index();
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LOG_INFO(logger, "Last committed index: {}", last_commited_index);
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DB::KeeperLogStore changelog(
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LogFileSettings{.force_sync = true, .compress_logs = settings->compress_logs, .rotate_interval = 10000000}, keeper_context);
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changelog.init(last_commited_index, 10000000000UL); /// collect all logs
if (changelog.size() == 0)
LOG_INFO(logger, "Changelog empty");
else
LOG_INFO(logger, "Last changelog entry {}", changelog.next_slot() - 1);
for (size_t i = last_commited_index + 1; i < changelog.next_slot(); ++i)
{
if (changelog.entry_at(i)->get_val_type() == nuraft::log_val_type::app_log)
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{
state_machine->pre_commit(i, changelog.entry_at(i)->get_buf());
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state_machine->commit(i, changelog.entry_at(i)->get_buf());
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}
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}
dumpMachine(state_machine);
return 0;
}