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[FLASH-1136] Upgrade old path with not escaped data path (#682)
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@JaySon-Huang
JaySon-Huang authored Apr 29, 2020
1 parent 942bf93 commit 492c39e
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Showing 3 changed files with 167 additions and 30 deletions.
159 changes: 141 additions & 18 deletions dbms/src/Interpreters/IDAsPathUpgrader.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -232,14 +232,26 @@ String IDAsPathUpgrader::TableDiskInfo::getMetaFilePath(const String & root_path
return db.getMetaDirectory(root_path) + escapeForFileName(name()) + ".sql";
}
// "data/${db_name}/${tbl_name}/"
String IDAsPathUpgrader::TableDiskInfo::getDataDirectory(const String & root_path, const DatabaseDiskInfo & db) const
String IDAsPathUpgrader::TableDiskInfo::getDataDirectory(
const String & root_path, const DatabaseDiskInfo & db, bool escape_db, bool escape_tbl) const
{
return db.getDataDirectory(root_path) + escapeForFileName(name()) + "/";
String res = db.getDataDirectory(root_path, escape_db);
if (escape_tbl)
res += escapeForFileName(name());
else
res += name();
return res + "/";
}
// "extra_data/${db_name}/${tbl_name}/"
String IDAsPathUpgrader::TableDiskInfo::getExtraDirectory(const String & root_path, const DatabaseDiskInfo & db) const
String IDAsPathUpgrader::TableDiskInfo::getExtraDirectory(
const String & root_path, const DatabaseDiskInfo & db, bool escape_db, bool escape_tbl) const
{
return db.getExtraDirectory(root_path) + escapeForFileName(name()) + "/";
String res = db.getExtraDirectory(root_path, escape_db);
if (escape_tbl)
res += escapeForFileName(name());
else
res += name();
return res + "/";
}

// "metadata/db_${db_id}/t_${id}.sql"
Expand Down Expand Up @@ -281,25 +293,38 @@ String IDAsPathUpgrader::DatabaseDiskInfo::getTiDBSerializeInfo() const
}

// "metadata/${db_name}.sql"
String IDAsPathUpgrader::DatabaseDiskInfo::getMetaFilePath(const String & root_path, bool tmp) const
String IDAsPathUpgrader::DatabaseDiskInfo::doGetMetaFilePath(const String & root_path, bool tmp) const
{
String meta_dir = getMetaDirectory(root_path, tmp);
String meta_dir = doGetMetaDirectory(root_path, tmp);
return (endsWith(meta_dir, "/") ? meta_dir.substr(0, meta_dir.size() - 1) : meta_dir) + ".sql";
}
// "metadata/${db_name}/"
String IDAsPathUpgrader::DatabaseDiskInfo::getMetaDirectory(const String & root_path, bool tmp) const
String IDAsPathUpgrader::DatabaseDiskInfo::doGetMetaDirectory(const String & root_path, bool tmp) const
{
return root_path + "/metadata/" + escapeForFileName(name + (tmp ? TMP_SUFFIX : "")) + "/";
}
// "data/${db_name}/"
String IDAsPathUpgrader::DatabaseDiskInfo::getDataDirectory(const String & root_path, bool tmp) const
String IDAsPathUpgrader::DatabaseDiskInfo::doGetDataDirectory(const String & root_path, bool escape, bool tmp) const
{
return root_path + "/data/" + escapeForFileName(name + (tmp ? TMP_SUFFIX : "")) + "/";
// Old data path don't do escape for path
if (escape)
return root_path + "/data/" + escapeForFileName(name + (tmp ? TMP_SUFFIX : "")) + "/";
else
{
// Old extra data path (in PathPool) don't escape for path.
return root_path + "/data/" + name + (tmp ? TMP_SUFFIX : "") + "/";
}
}
// "extra_data/${db_name}/"
String IDAsPathUpgrader::DatabaseDiskInfo::getExtraDirectory(const String & extra_root, bool tmp) const
String IDAsPathUpgrader::DatabaseDiskInfo::doGetExtraDirectory(const String & extra_root, bool escape, bool tmp) const
{
return extra_root + "/" + escapeForFileName(name + (tmp ? TMP_SUFFIX : "")) + "/";
if (escape)
return extra_root + "/" + escapeForFileName(name + (tmp ? TMP_SUFFIX : "")) + "/";
else
{
// Old extra data path (in PathPool) don't escape for path.
return extra_root + "/" + name + (tmp ? TMP_SUFFIX : "") + "/";
}
}

// "metadata/db_${id}.sql"
Expand All @@ -326,17 +351,23 @@ void IDAsPathUpgrader::DatabaseDiskInfo::renameToTmpDirectories(const Context &

auto root_path = ctx.getPath();
// Rename database meta file if exist
renamePath(getMetaFilePath(root_path, false), getMetaFilePath(root_path, true), log, false);
renamePath(doGetMetaFilePath(root_path, false), doGetMetaFilePath(root_path, true), log, false);
// Rename database meta dir
renamePath(getMetaDirectory(root_path, false), getMetaDirectory(root_path, true), log, true);
renamePath(doGetMetaDirectory(root_path, false), doGetMetaDirectory(root_path, true), log, true);

// Rename database data dir
renamePath(getDataDirectory(root_path, false), getDataDirectory(root_path, true), log, true);
renamePath( //
doGetDataDirectory(root_path, /*escape*/ true, /*tmp*/ false),
doGetDataDirectory(root_path, /*escape*/ true, /*tmp*/ true),
log,
true);

// Rename database data dir for multi-paths
auto root_pool = ctx.getExtraPaths();
for (const auto & path : root_pool.listPaths())
renamePath(getExtraDirectory(path, false), getDataDirectory(path, true), log, false);
for (const auto & extra_path : root_pool.listPaths())
renamePath( //
doGetExtraDirectory(extra_path, /*escape*/ true, /*tmp*/ false), //
doGetExtraDirectory(extra_path, /*escape*/ true, /*tmp*/ true), log, false);

moved_to_tmp = true;
}
Expand Down Expand Up @@ -423,10 +454,15 @@ static void dropAbsentDatabase(
// Remove old data dir
const String old_data_dir = db_info.getDataDirectory(root_path);
tryRemoveDirectory(old_data_dir, log, true);
// not escaped dir created by old PathPool
const String old_data_dir_not_escaped = db_info.getDataDirectory(root_path, false);
tryRemoveDirectory(old_data_dir_not_escaped, log, true);

const auto & data_extra_paths = context.getExtraPaths();
for (const auto & extra_root_path : data_extra_paths.listPaths())
{
tryRemoveDirectory(db_info.getExtraDirectory(extra_root_path), log, true);
tryRemoveDirectory(db_info.getExtraDirectory(extra_root_path, false), log, true);
}
}

Expand All @@ -450,8 +486,8 @@ void IDAsPathUpgrader::linkDatabaseTableInfos(const std::vector<TiDB::DBInfoPtr>
// If we can't find it in TiDB, maybe it already dropped.
if (reserved_databases.count(db_name) > 0)
{
// For mock test or develop environment, we may reserve some database
// for convenience. Keep them as what they are. Print warnings and
// For mock test or develop environment, we may reserve some database
// for convenience. Keep them as what they are. Print warnings and
// ignore it in later upgrade.
LOG_WARNING(log, "Database " + db_name + " is reserved, ignored in upgrade.");
}
Expand Down Expand Up @@ -486,6 +522,92 @@ void IDAsPathUpgrader::linkDatabaseTableInfos(const std::vector<TiDB::DBInfoPtr>
}
}

void IDAsPathUpgrader::fixNotEscapedDirectories()
{
for (const auto & [db_name, db_info] : databases)
{
const auto db_name_escaped = escapeForFileName(db_name);

// database's meta file, meta dir (created by old DatabaseOrdinary) is escaped.
// only need to create data path
if (db_name != db_name_escaped)
{
LOG_INFO(log, "database `" + db_name + "` fixing name escape to `" + db_name_escaped + "`");
// Create directory for escaped database
auto escaped_db_data_dir = db_info.getDataDirectory(root_path, /*escape=*/true);
if (Poco::File dir(escaped_db_data_dir); !dir.exists())
dir.createDirectory();

const auto & data_extra_paths = global_context.getExtraPaths();
for (const auto & extra_root_path : data_extra_paths.listPaths())
{
auto escaped_extra_dir = db_info.getExtraDirectory(extra_root_path, /*escape=*/true);
if (Poco::File dir(escaped_extra_dir); !dir.exists())
dir.createDirectory();
}
}

/// Fix not escaped name for table
for (const auto & table : db_info.tables)
{
const auto table_name_escaped = escapeForFileName(table.name());
if (db_name_escaped == db_name && table_name_escaped == table.name())
continue;

LOG_INFO(log,
"table `" + db_name + "`.`" + table.name() + "` fixing name escape to `" //
+ db_name_escaped + "`.`" + table_name_escaped + "`");
// Table's metadata don't need to fix.

// Fix data path. It was create by DatabaseOrdinary and StorageDeltaMerge,
// database name is escaped but table name not.
auto not_escaped_path = table.getDataDirectory(root_path, db_info, /*escape_db*/ true, /*escape_tbl*/ false);
auto escaped_path = table.getDataDirectory(root_path, db_info, /*escape_db*/ true, /*escape_tbl*/ true);
renamePath(not_escaped_path, escaped_path, log, true);
auto db_tbl_not_escaped_path = not_escaped_path;
if (db_name != db_name_escaped)
{
// Stable dir was created by old PathPool, database name and table name are not escaped.
db_tbl_not_escaped_path = table.getDataDirectory(root_path, db_info, false, false);
auto not_escaped_stable = db_tbl_not_escaped_path + "/stable";
auto escaped_stable = table.getDataDirectory(root_path, db_info, true, true) + "/stable";
renamePath(not_escaped_stable, escaped_stable, log, true);
}

// Fix extra path.
const auto & data_extra_paths = global_context.getExtraPaths();
for (const auto & extra_root_path : data_extra_paths.listPaths())
{
// It was created by old PathPool, both database name and table name are not escaped.
auto not_escaped_extra_path = table.getExtraDirectory(extra_root_path, db_info, /*escape_db*/ false, /*escape_tbl*/ false);
if (isSamePath(not_escaped_extra_path, db_tbl_not_escaped_path))
continue;
auto escaped_extra_path = table.getExtraDirectory(extra_root_path, db_info, /*escape_db*/ true, /*escape_tbl*/ true);
renamePath(not_escaped_extra_path, escaped_extra_path, log, false);
}
LOG_INFO(log,
"table `" + db_name + "`.`" + table.name() + "` fixing name escape to `" //
+ db_name_escaped + "`.`" + table_name_escaped + "` done.");
}

if (db_name != db_name_escaped)
{
// clean not escaped database dir created by old PathPool
const String not_escaped_data_dir = db_info.getDataDirectory(root_path, /*escape*/ false);
tryRemoveDirectory(not_escaped_data_dir, log, true);
const auto & data_extra_paths = global_context.getExtraPaths();
for (const auto & extra_root_path : data_extra_paths.listPaths())
{
auto not_escaped_extra_data_dir = db_info.getExtraDirectory(extra_root_path, /*escape*/ false);
if (isSamePath(not_escaped_data_dir, not_escaped_extra_data_dir))
continue;
tryRemoveDirectory(not_escaped_extra_data_dir, log);
}
}
LOG_INFO(log, "database `" + db_name + "` fixing name escape to `" + db_name_escaped + "` done.");
}
}

void IDAsPathUpgrader::resolveConflictDirectories()
{
std::unordered_set<String> conflict_databases;
Expand Down Expand Up @@ -668,6 +790,7 @@ void IDAsPathUpgrader::doUpgrade()
{
auto all_databases = fetchInfosFromTiDB();
linkDatabaseTableInfos(all_databases);
fixNotEscapedDirectories();
// Check if destination db / tbl file exists and resolve conflict
resolveConflictDirectories();
// Rename
Expand Down
33 changes: 22 additions & 11 deletions dbms/src/Interpreters/IDAsPathUpgrader.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -49,9 +49,10 @@ class IDAsPathUpgrader
// "metadata/${db_name}/${tbl_name}.sql"
String getMetaFilePath(const String & root_path, const DatabaseDiskInfo & db) const;
// "data/${db_name}/${tbl_name}/"
String getDataDirectory(const String & root_path, const DatabaseDiskInfo & db) const;
String getDataDirectory(const String & root_path, const DatabaseDiskInfo & db, bool escape_db = true, bool escape_tbl = true) const;
// "extra_data/${db_name}/${tbl_name}/"
String getExtraDirectory(const String & root_path, const DatabaseDiskInfo & db) const;
String getExtraDirectory(
const String & root_path, const DatabaseDiskInfo & db, bool escape_db = true, bool escape_tbl = true) const;

// "metadata/db_${db_id}/t_${id}.sql"
String getNewMetaFilePath(const String & root_path, const DatabaseDiskInfo & db) const;
Expand Down Expand Up @@ -91,13 +92,19 @@ class IDAsPathUpgrader
String getTiDBSerializeInfo() const;

// "metadata/${db_name}.sql"
String getMetaFilePath(const String & root_path) const { return getMetaFilePath(root_path, moved_to_tmp); }
String getMetaFilePath(const String & root_path) const { return doGetMetaFilePath(root_path, moved_to_tmp); }
// "metadata/${db_name}/"
String getMetaDirectory(const String & root_path) const { return getMetaDirectory(root_path, moved_to_tmp); }
String getMetaDirectory(const String & root_path) const { return doGetMetaDirectory(root_path, moved_to_tmp); }
// "data/${db_name}/"
String getDataDirectory(const String & root_path) const { return getDataDirectory(root_path, moved_to_tmp); }
// "extra_data/${db_name}/"
String getExtraDirectory(const String & extra_root) const { return getExtraDirectory(extra_root, moved_to_tmp); }
String getDataDirectory(const String & root_path, bool escape = true) const
{
return doGetDataDirectory(root_path, escape, moved_to_tmp);
}
// "extra_data/${db_name}/". db_name is not escaped.
String getExtraDirectory(const String & extra_root, bool escape = true) const
{
return doGetExtraDirectory(extra_root, escape, moved_to_tmp);
}

void renameToTmpDirectories(const Context & ctx, Poco::Logger * log);

Expand All @@ -112,13 +119,13 @@ class IDAsPathUpgrader

private:
// "metadata/${db_name}.sql"
String getMetaFilePath(const String & root_path, bool tmp) const;
String doGetMetaFilePath(const String & root_path, bool tmp) const;
// "metadata/${db_name}/"
String getMetaDirectory(const String & root_path, bool tmp) const;
String doGetMetaDirectory(const String & root_path, bool tmp) const;
// "data/${db_name}/"
String getDataDirectory(const String & root_path, bool tmp) const;
String doGetDataDirectory(const String & root_path, bool escape, bool tmp) const;
// "extra_data/${db_name}/"
String getExtraDirectory(const String & extra_root, bool tmp) const;
String doGetExtraDirectory(const String & extra_root, bool escape, bool tmp) const;
};

public:
Expand All @@ -136,6 +143,10 @@ class IDAsPathUpgrader

void linkDatabaseTableInfos(const std::vector<TiDB::DBInfoPtr> & all_databases);

// Some path created by old PathPool, its database / table name is not escaped,
// normalized those names first.
void fixNotEscapedDirectories();

void resolveConflictDirectories();

void doRename();
Expand Down
5 changes: 4 additions & 1 deletion dbms/src/Interpreters/tests/gtest_id_as_path_upgrader.cpp
View file
Original file line number Diff line number Diff line change
@@ -1,6 +1,7 @@
#include <Interpreters/IDAsPathUpgrader.h>
#include <test_utils/TiflashTestBasic.h>
#include <Interpreters/loadMetadata.h>
#include <Storages/registerStorages.h>
#include <test_utils/TiflashTestBasic.h>

namespace DB::tests
{
Expand All @@ -11,6 +12,8 @@ TEST(IDAsPathUpgrader_test, DISABLED_test)
try
{
TiFlashTestEnv::setupLogger();
registerStorages();

auto ctx = TiFlashTestEnv::getContext();
IDAsPathUpgrader upgrader(ctx, false, {});
ASSERT_TRUE(upgrader.needUpgrade());
Expand Down

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