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pdoernerandGitHub
9953113230
* add shardID to rate limit request * add generic map rate limiter * replace namespace rate limiter with generic version * system caller segement constant * add per shard per ns rate limiter * imports * configs * use noop rate limiter if no limit set * feedback * imports * remove unused config options * generic rate limit map keys * generic map limiter * type casting * feedback * cleanup * tests
93 lines
3.0 KiB
Go
93 lines
3.0 KiB
Go
// The MIT License
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//
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// Copyright (c) 2020 Temporal Technologies Inc. All rights reserved.
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//
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// Copyright (c) 2020 Uber Technologies, Inc.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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package queues
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import (
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"strconv"
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"go.temporal.io/server/common/dynamicconfig"
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"go.temporal.io/server/common/quotas"
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)
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const (
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readerRequestToken = 1
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)
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func NewReaderPriorityRateLimiter(
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rateFn quotas.RateFn,
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maxReaders int64,
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) quotas.RequestRateLimiter {
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rateLimiters := make(map[int]quotas.RequestRateLimiter, maxReaders)
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readerCallerToPriority := make(map[string]int, maxReaders)
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for readerId := DefaultReaderId; readerId != DefaultReaderId+maxReaders; readerId++ {
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// use readerId as priority
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rateLimiters[int(readerId)] = quotas.NewRequestRateLimiterAdapter(quotas.NewDefaultOutgoingRateLimiter(rateFn))
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// reader will use readerId (in string type) as caller when using the rate limiter
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readerCallerToPriority[newReaderRequest(readerId).Caller] = int(readerId)
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}
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lowestPriority := int(DefaultReaderId + maxReaders - 1)
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return quotas.NewPriorityRateLimiter(
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func(req quotas.Request) int {
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if priority, ok := readerCallerToPriority[req.Caller]; ok {
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return priority
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}
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return lowestPriority
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},
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rateLimiters,
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)
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}
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func newShardReaderRateLimiter(
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shardMaxPollRPS dynamicconfig.IntPropertyFn,
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hostReaderRateLimiter quotas.RequestRateLimiter,
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maxReaders int64,
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) quotas.RequestRateLimiter {
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return quotas.NewMultiRequestRateLimiter(
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NewReaderPriorityRateLimiter(
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func() float64 { return float64(shardMaxPollRPS()) },
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maxReaders,
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),
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hostReaderRateLimiter,
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)
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}
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func newReaderRequest(
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readerID int64,
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) quotas.Request {
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// The priority is only based on readerID (caller),
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// api, caller type, caller segment, and call initiation (origin)
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// are the same for all the readers, and not related to
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// priority so leaving those fields empty.
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return quotas.NewRequest(
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"",
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readerRequestToken,
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strconv.FormatInt(readerID, 10),
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"",
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0,
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"",
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)
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}
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