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https://issues.apache.org/jira/browse/FLINK-20334?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tzu-Li (Gordon) Tai updated FLINK-20334:
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Component/s: Stateful Functions
> Introduce function endpoint path templating in module YAML specifications
> -------------------------------------------------------------------------
>
> Key: FLINK-20334
> URL: https://issues.apache.org/jira/browse/FLINK-20334
> Project: Flink
> Issue Type: Sub-task
> Components: Stateful Functions
> Reporter: Tzu-Li (Gordon) Tai
> Priority: Major
> Fix For: statefun-2.3.0
>
>
> In the current module specifications, function endpoints are defined like so:
> {code}
> functions:
> - function:
> meta:
> kind: http
> type: com.foo/world
> spec:
> endpoint: http://localhost:5959/statefun
> {code}
> A list of functions and their corresponding service endpoints are listed
> statically in the module specification file, which is loaded once on system
> startup. The system may only route messages to functions that have been
> defined. This prevents users from adding new functions to the application,
> without having to restart the system and reload new module specifications.
> We propose that instead of specifying functions, users should specify a
> "family" of function endpoints, like so:
> {code}
> functionEndpoints:
> - functionEndpoint:
> meta:
> kind: http
> spec:
> target:
> typename:
> namespace: com.foo.bar
> function: * # (can be wildcard * or a specific name)
> urlPathTemplate:
> "https://bar.foo.com:8000/{typename.function}";
> connectTimeout: 1min
> # ... (other connection related configs that is shared for this
> endpoint family)
> {code}
> Note how users no longer define eager state per individual function. This is
> made possible by FLINK-20265, where state is now defined in the functions
> instead of in the module specifications.
> Function endpoint templating should only be supported in a new module
> specification format version (next version being {{3.0}}), where the previous
> way of defining individual functions is no longer supported.
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