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pdoernerandGitHub
065c83f8ec
<!-- Describe what has changed in this PR --> **What changed?** * Added a new possible value for the `caller-type` header: `operator` * This header should be set by web UI and tctl to indicate that requests should be given higher precedence * Rate limiters for persistence, history, matching, and visibility were updated with a new priority corresponding to `operator` requests * These new priorities have a lower RPS limit to prevent abusing the header to get high priority for all requests. Currently the operator priority is allowed 20% of the rate of the existing rate limiters <!-- Tell your future self why have you made these changes --> **Why?** When the system is being throttled, users would like to be able to debug using the web UI and/or tctl without running into rate limit errors <!-- How have you verified this change? Tested locally? Added a unit test? Checked in staging env? --> **How did you test it?** New unit tests <!-- Assuming the worst case, what can be broken when deploying this change to production? --> **Potential risks** The operator RPS is set too low leading to new rate limit errors <!-- Is this PR a hotfix candidate or require that a notification be sent to the broader community? (Yes/No) --> **Is hotfix candidate?** No
82 lines
2.5 KiB
Go
82 lines
2.5 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 interceptor
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import (
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"context"
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"google.golang.org/grpc"
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"go.temporal.io/server/common/headers"
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"go.temporal.io/server/common/namespace"
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)
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type (
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CallerInfoInterceptor struct {
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namespaceRegistry namespace.Registry
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}
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)
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var _ grpc.UnaryServerInterceptor = (*CallerInfoInterceptor)(nil).Intercept
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func NewCallerInfoInterceptor(
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namespaceRegistry namespace.Registry,
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) *CallerInfoInterceptor {
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return &CallerInfoInterceptor{
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namespaceRegistry: namespaceRegistry,
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}
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}
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func (i *CallerInfoInterceptor) Intercept(
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ctx context.Context,
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req interface{},
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info *grpc.UnaryServerInfo,
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handler grpc.UnaryHandler,
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) (interface{}, error) {
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callerInfo := headers.GetCallerInfo(ctx)
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updateInfo := false
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if callerInfo.CallerName == "" {
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callerInfo.CallerName = string(MustGetNamespaceName(i.namespaceRegistry, req))
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updateInfo = callerInfo.CallerName != ""
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}
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if callerInfo.CallerType == "" {
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callerInfo.CallerType = headers.CallerTypeAPI
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updateInfo = true
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}
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if (callerInfo.CallerType == headers.CallerTypeAPI || callerInfo.CallerType == headers.CallerTypeOperator) &&
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callerInfo.CallOrigin == "" {
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_, method := SplitMethodName(info.FullMethod)
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callerInfo.CallOrigin = method
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updateInfo = true
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}
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if updateInfo {
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ctx = headers.SetCallerInfo(ctx, callerInfo)
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}
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return handler(ctx, req)
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}
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