62 lines
2.0 KiB
C++
62 lines
2.0 KiB
C++
/*
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* CacheRangeCommand.actor.cpp
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*
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* This source file is part of the FoundationDB open source project
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*
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* Copyright 2013-2021 Apple Inc. and the FoundationDB project authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "fdbcli/fdbcli.actor.h"
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#include "fdbclient/FDBOptions.g.h"
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#include "fdbclient/IClientApi.h"
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#include "fdbclient/ManagementAPI.actor.h"
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#include "fdbclient/SystemData.h"
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#include "flow/Arena.h"
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#include "flow/FastRef.h"
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#include "flow/ThreadHelper.actor.h"
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#include "flow/actorcompiler.h" // This must be the last #include.
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namespace fdb_cli {
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ACTOR Future<bool> cacheRangeCommandActor(Reference<IDatabase> db, std::vector<StringRef> tokens) {
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if (tokens.size() != 4) {
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printUsage(tokens[0]);
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return false;
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} else {
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state KeyRangeRef cacheRange(tokens[2], tokens[3]);
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if (tokencmp(tokens[1], "set")) {
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wait(ManagementAPI::addCachedRange(db, cacheRange));
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} else if (tokencmp(tokens[1], "clear")) {
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wait(ManagementAPI::removeCachedRange(db, cacheRange));
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} else {
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printUsage(tokens[0]);
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return false;
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}
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}
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return true;
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}
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CommandFactory cacheRangeFactory(
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"cache_range",
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CommandHelp(
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"cache_range <set|clear> <BEGINKEY> <ENDKEY>",
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"Mark a key range to add to or remove from storage caches.",
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"Use the storage caches to assist in balancing hot read shards. Set the appropriate ranges when experiencing "
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"heavy load, and clear them when they are no longer necessary."));
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} // namespace fdb_cli
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