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https://issues.apache.org/jira/browse/CAMEL-24752?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18115589#comment-18115589
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Claus Ibsen commented on CAMEL-24752:
-------------------------------------
Merged in https://github.com/apache/camel/pull/26459 (commit 130d3624133e).
_Claude Code on behalf of davsclaus_
> camel-core - generate a name to artifact table (like SensitiveUtils) so
> unknown component, language, data format and bean errors say which jar to add
> -----------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: CAMEL-24752
> URL: https://issues.apache.org/jira/browse/CAMEL-24752
> Project: Camel
> Issue Type: Improvement
> Components: build system, camel-core
> Reporter: Claus Ibsen
> Assignee: Claus Ibsen
> Priority: Minor
> Fix For: 4.23.0
>
>
> The runtime cannot tell which jar a missing component, language, data format
> or built-in bean is in: the metadata that knows (the catalog JSON, or the
> META-INF/services/org/apache/camel/*.json files) ships inside the jar that is
> absent. So the errors are generic, or guess:
> * unknown component scheme (AbstractCamelContext.doGetEndpoint ->
> NoSuchEndpointException): {{No endpoint could be found for: foo://bar, please
> check your classpath contains the needed Camel component jar.}} - no jar
> named, no nearest scheme
> * unknown language (NoSuchLanguageException): {{... e.g. camel-<name>}} - a
> guess that is wrong for 14 of the 28 languages (xquery -> camel-saxon, spel
> -> camel-spring, java -> camel-joor, js -> camel-javascript, hl7terser ->
> camel-hl7, xtokenize -> camel-stax, simple/header/... -> camel-core-languages)
> * data format jar missing (DataFormatReifier.createDataFormat): {{Data format
> 'jaxb' could not be created. Ensure ... present on the classpath}} - no jar
> * built-in bean jar missing (PojoBeanHelper from CAMEL-24709): generic hint,
> as the bean metadata is in the missing jar
> * YAML {{Unknown expression with id: ...}} - no nearest name, no jar
> Measured against the catalog, {{camel-<name>}} is the wrong artifact for 103
> of 407 component schemes (aws2-ddbstream -> camel-aws2-ddb, caffeine-cache ->
> camel-caffeine, class -> camel-bean, coaps -> camel-coap, avro ->
> camel-avro-rpc, ...), 14 of 28 languages and 25 of 56 data formats, so a
> guess is not good enough.
> Proposal: do what {{SensitiveUtils}} does. A new {{update-artifact-helper}}
> goal next to {{update-sensitive-helper}} in catalog/camel-catalog reads the
> catalog JSON and rewrites a generated class in core/camel-util (e.g.
> {{CamelArtifactUtils}}) between START/END tokens, with four blocks:
> components (scheme -> artifactId, incl. alternative schemes), languages,
> dataformats, beans (simple name -> javaType, interfaceType, artifactId). Plus
> small hand-written methods: artifactOf(kind, name), names(kind) and
> closest(kind, name) (edit distance; camel-util has none today and
> YamlValidator and EditDistanceSuggestionStrategy each keep a private copy
> that could move here).
> A Java class rather than a resource file so camel-api can use it (camel-api
> already depends on camel-util), it is GraalVM native safe without resource
> registration, and it matches the existing pattern. ~560 entries, well within
> limits. The table version equals the runtime version by construction, which
> is better than the camel-jbang catalog that may be another version.
> Consumers (one line at each throw site):
> # NoSuchLanguageException: known name -> {{add camel-saxon to the
> classpath}}; unknown -> {{not a Camel language (did you mean 'xquery'?)}};
> replaces the guess
> # NoSuchEndpointException / AbstractCamelContext unknown scheme: {{the
> aws2-ddbstream component is in camel-aws2-ddb, add it to the classpath}} or
> {{did you mean 'kafka'?}}
> # DataFormatReifier (model based and by ref): same two forms
> # PojoBeanHelper.classNotFoundHint: classpath scan first (covers third-party
> beans built with the plugin), table as fallback -> {{ZipAggregationStrategy
> is in camel-zipfile, add it to the classpath}}
> # YAML Unknown expression with id: nearest name + jar
> Runtime flavour: the artifact is camel-saxon-starter on Spring Boot and
> camel-quarkus-saxon on Quarkus; the message can say {{add camel-saxon
> (camel-saxon-starter on Spring Boot, camel-quarkus-saxon on Quarkus)}}
> unconditionally, as core cannot cheaply tell the runtime.
> Notes:
> * two-pass build like SensitiveUtils: adding a component needs a rebuild to
> refresh the table; the CI uncommitted-changes check enforces it
> * third-party or camel-quarkus-only components are not in the table; the hint
> falls back to the generic text
> * NoSuchLanguageException / NoSuchEndpointException texts are asserted with
> contains() in a few tests; append after the existing sentence
> Found while working on CAMEL-24709 (PR 26455), where naming the missing
> artifact turned out to be impossible from classpath metadata alone.
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