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## What changed? <!-- Describe what has changed in this PR --> Added support for forwarding `CompleteNexusOperation` requests from standby to active clusters. ## Why? <!-- Tell your future self why have you made these changes --> To avoid breaking operations if namespace failover occurs. ## How did you test it? <!-- How have you verified this change? Tested locally? Added a unit test? Checked in staging env? --> New xdc functional test ## Potential risks <!-- Assuming the worst case, what can be broken when deploying this change to production? --> ## Documentation <!-- Have you made sure this change doesn't falsify anything currently stated in `docs/`? If significant new behavior is added, have you described that in `docs/`? --> ## Is hotfix candidate? <!-- Is this PR a hotfix candidate or does it require a notification to be sent to the broader community? (Yes/No) -->
73 lines
2.9 KiB
Go
73 lines
2.9 KiB
Go
// The MIT License
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//
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// Copyright (c) 2024 Temporal Technologies Inc. All rights reserved.
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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 frontend
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import (
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"net/http"
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"github.com/gorilla/mux"
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"github.com/nexus-rpc/sdk-go/nexus"
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"go.uber.org/fx"
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"go.temporal.io/server/common/dynamicconfig"
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"go.temporal.io/server/common/headers"
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"go.temporal.io/server/common/log"
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"go.temporal.io/server/common/metrics"
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commonnexus "go.temporal.io/server/common/nexus"
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"go.temporal.io/server/common/rpc"
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)
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var Module = fx.Module(
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"component.nexusoperations.frontend",
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fx.Provide(ConfigProvider),
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fx.Provide(commonnexus.NewCallbackTokenGenerator),
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fx.Invoke(RegisterHTTPHandler),
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)
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func ConfigProvider(coll *dynamicconfig.Collection) *Config {
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return &Config{
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Enabled: dynamicconfig.EnableNexus.Get(coll),
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PayloadSizeLimit: dynamicconfig.BlobSizeLimitError.Get(coll),
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ForwardingEnabledForNamespace: dynamicconfig.EnableNamespaceNotActiveAutoForwarding.Get(coll),
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}
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}
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func RegisterHTTPHandler(options HandlerOptions, logger log.Logger, router *mux.Router) {
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h := nexus.NewCompletionHTTPHandler(nexus.CompletionHandlerOptions{
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Handler: &completionHandler{
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options,
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headers.NewDefaultVersionChecker(),
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options.MetricsHandler.Counter(metrics.NexusCompletionRequestPreProcessErrors.Name()),
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},
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Logger: log.NewSlogLogger(logger),
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Serializer: commonnexus.PayloadSerializer,
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})
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router.Path("/" + commonnexus.RouteCompletionCallback.Representation()).HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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// Limit the request body to max allowed Payload size.
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// Content headers are transformed to Payload metadata and contribute to the Payload size as well. A separate
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// limit is enforced on top of this in the CompleteOperation method.
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r.Body = http.MaxBytesReader(w, r.Body, rpc.MaxNexusAPIRequestBodyBytes)
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h.ServeHTTP(w, r)
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})
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}
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