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https://issues.apache.org/jira/browse/CALCITE-5189?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Julian Hyde closed CALCITE-5189.
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Closing on release of avatica-1.23.0 (2023-01-19)
> Add support for constant HTTP path prefixes to Avatica server
> -------------------------------------------------------------
>
> Key: CALCITE-5189
> URL: https://issues.apache.org/jira/browse/CALCITE-5189
> Project: Calcite
> Issue Type: New Feature
> Components: avatica
> Reporter: Will Noble
> Assignee: Will Noble
> Priority: Minor
> Fix For: avatica-1.23.0
>
>
> Some load balancers, such as those based on [Kubernetes ingress
> rules|https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.19/#httpingressrulevalue-v1beta1-networking-k8s-io],
> can only route requests based on HTTP path. To support hosting an Avatica
> server behind such a load balancers, the driver should support prepending all
> HTTP request paths with a constant (configurable) prefix, and the server
> should support stripping that constant prefix from all requests is receives.
> On the server side, this can either be done as a piece of middleware (A
> handler wrapper that just strips the prefix then delegates to the real
> handler), or by modifying the existing 2 handlers ({{AvaticaProtobufHandler}}
> and {{AvaticaJsonHandler}}) to ignore the prefix (without duplicating code).
> I'm leaning toward the former, since it would obviate the need to worry about
> it in any custom / future handlers.
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