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c29c3749e0
## What changed? Adding error to log message when failing to get an HTTP client for a remote cluster for a callback request.
81 lines
2.5 KiB
Go
81 lines
2.5 KiB
Go
package callbacks
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import (
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"fmt"
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"net/http"
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"go.temporal.io/server/common"
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"go.temporal.io/server/common/cluster"
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"go.temporal.io/server/common/collection"
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"go.temporal.io/server/common/log"
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"go.temporal.io/server/common/log/tag"
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"go.temporal.io/server/service/history/queues"
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"go.uber.org/fx"
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)
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// Header key used to identify callbacks that originate from and target the same cluster.
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const callbackSourceHeader = "source"
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var Module = fx.Module(
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"component.callbacks",
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fx.Provide(ConfigProvider),
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fx.Provide(HTTPCallerProviderProvider),
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fx.Invoke(RegisterTaskSerializers),
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fx.Invoke(RegisterStateMachine),
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fx.Invoke(RegisterExecutor),
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)
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func HTTPCallerProviderProvider(
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clusterMetadata cluster.Metadata,
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rpcFactory common.RPCFactory,
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httpClientCache *cluster.FrontendHTTPClientCache,
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logger log.Logger,
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) (HTTPCallerProvider, error) {
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localClient, err := rpcFactory.CreateLocalFrontendHTTPClient()
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if err != nil {
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return nil, fmt.Errorf("cannot create local frontend HTTP client: %w", err)
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}
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m := collection.NewOnceMap(func(queues.NamespaceIDAndDestination) HTTPCaller {
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// Create this once and reuse for all outgoing requests.
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// Note that this may not ever be used but it cheap enough to create and is better to avoid the complexities of
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// lazily creating it.
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client := &http.Client{}
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return func(r *http.Request) (*http.Response, error) {
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if r.Header == nil || r.Header.Get(callbackSourceHeader) == "" {
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return client.Do(r)
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}
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callbackSource := r.Header.Get(callbackSourceHeader)
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for clusterName, clusterInfo := range clusterMetadata.GetAllClusterInfo() {
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if callbackSource == clusterInfo.ClusterID {
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var frontendClient *common.FrontendHTTPClient
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if clusterMetadata.GetCurrentClusterName() == clusterName {
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frontendClient = localClient
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} else {
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frontendClient, err = httpClientCache.Get(clusterName)
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if err != nil {
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logger.Warn(
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"HTTPCallerProviderProvider unable to get FrontendHTTPClient for callback target cluster. Using default HTTP client.",
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tag.SourceCluster(clusterMetadata.GetCurrentClusterName()),
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tag.TargetCluster(clusterName),
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tag.Error(err),
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)
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return client.Do(r)
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}
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}
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r.URL.Scheme = frontendClient.Scheme
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r.URL.Host = frontendClient.Address
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r.Host = frontendClient.Address
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return frontendClient.Do(r)
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}
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}
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// We don't know this calling cluster, use the default client.
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return client.Do(r)
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}
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})
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return m.Get, nil
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}
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