Claus Ibsen created CAMEL-24875:
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Summary: camel-jbang - camel validate yaml skips a multi-line
simple expression (expression: | block scalar)
Key: CAMEL-24875
URL: https://issues.apache.org/jira/browse/CAMEL-24875
Project: Camel
Issue Type: Bug
Components: camel-jbang
Reporter: Claus Ibsen
{{SimpleChecks.validateYamlSimple}} (the simple checks of {{camel validate
yaml}}, also used by the TUI AI answer check and the MCP validator) is line
based: for {{simple:}} followed by {{expression: |}} or {{expression: >}} the
value on the line is empty, so the whole expression is skipped without a
report. Every multi-line simple expression is unchecked, and an init block
({{$init{ ... }init$}}) is always multi-line since each statement must end with
{{;\n}}.
Verified on 4.23.0-SNAPSHOT: a route with
{code}
- setBody:
expression:
simple:
expression: |
$init{
$cleanName := ${trim()} -> ${normalizeWhitespace()} |>
${uppercase()}
}init$
Customer: ${cleanName(${header.customerName})}
{code}
validates with success, and fails at runtime with {{expected symbol whiteSpace
but was character: operators and values must be separated by a space at
location 43}}. A missing {{}init$}} is not reported either. The catalog can
judge these once it is handed the whole text, as
{{AbstractCamelCatalog.doValidateSimple}} delegates to
{{SimpleLanguage.createExpression}}.
Proposed: join the indented lines of a block scalar (and a multi-line
plain/quoted scalar) into the expression text before validating, and report the
error at the line of {{expression:}}. Found while analysing CAMEL-24874.
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