Apache Camel - 为什么 Rest OpenAPI 追加 basePath 两次

Question

我有一个使用camel-rest-openapi组件来调用Petstore OpenAPI规范中定义的操作的路由。当尝试运行导致 HTTP 404 响应的路由时，组件会多次附加 basePath。

例如：petstore3.swagger.io /api/v3/api/v3 /pet/findByStatus?status=可用

下面是使用 Yaml DSL 的路由定义和camel jbang 的输出。

路线：

- from:
    uri: "timer:fetchPets?repeatCount=1"
    description: "Periodically fetches list of pets"
    steps:
      - to: "rest-openapi:https://petstore3.swagger.io/api/v3/openapi.json#findPetsByStatus?status=available&componentName=https"
      - log: "Received pets list: ${body}"

输出日志：

jake@localhost ~ % camel run sandbox.yaml
[jbang] Resolving dependencies...
[jbang]    org.apache.camel:camel-bom:4.5.0@pom
[jbang]    org.apache.camel:camel-jbang-core:4.5.0
[jbang]    org.apache.camel.kamelets:camel-kamelets:4.4.1
[jbang] Dependencies resolved
[jbang] Building jar for CamelJBang.java...
Note: Annotation processing is enabled because one or more processors were found
  on the class path. A future release of javac may disable annotation processing
  unless at least one processor is specified by name (-processor), or a search
  path is specified (--processor-path, --processor-module-path), or annotation
  processing is enabled explicitly (-proc:only, -proc:full).
  Use -Xlint:-options to suppress this message.
  Use -proc:none to disable annotation processing.
2024-03-28 10:38:46.875  INFO 78257 --- [           main] org.apache.camel.main.MainSupport   : Apache Camel (JBang) 4.5.0 is starting
2024-03-28 10:38:46.973  INFO 78257 --- [           main] org.apache.camel.main.MainSupport   : Using Java 21.0.1 with PID 78257. Started by jake in /Users/jake
2024-03-28 10:38:47.036  INFO 78257 --- [           main] apache.camel.main.ProfileConfigurer : The application is starting with profile: dev
2024-03-28 10:38:47.127  INFO 78257 --- [           main] mel.cli.connector.LocalCliConnector : Management from Camel JBang enabled
2024-03-28 10:38:47.829  INFO 78257 --- [           main] .download.MavenDependencyDownloader : Downloaded: org.apache.camel:camel-rest-openapi:4.5.0 (took: 679ms) from: central@https://repo1.maven.org/maven2
2024-03-28 10:38:47.848  INFO 78257 --- [           main] el.impl.engine.AbstractCamelContext : Apache Camel 4.5.0 (sandbox) is starting
2024-03-28 10:38:48.830  INFO 78257 --- [           main] .download.MavenDependencyDownloader : Downloaded: org.apache.camel:camel-http:4.5.0 (took: 569ms) from: central@https://repo1.maven.org/maven2
2024-03-28 10:38:48.904  INFO 78257 --- [           main] el.impl.engine.AbstractCamelContext : Routes startup (total:1)
2024-03-28 10:38:48.905  INFO 78257 --- [           main] el.impl.engine.AbstractCamelContext :     Started route1 (timer://fetchPets)
2024-03-28 10:38:48.905  INFO 78257 --- [           main] el.impl.engine.AbstractCamelContext : Apache Camel 4.5.0 (sandbox) started in 1s56ms (build:0ms init:0ms start:1s56ms)
2024-03-28 10:38:50.136 ERROR 78257 --- [mer://fetchPets] or.errorhandler.DefaultErrorHandler : Failed delivery for (MessageId: D038A8A058C3548-0000000000000000 on ExchangeId: D038A8A058C3548-0000000000000000). Exhausted after delivery attempt: 1 caught: org.apache.camel.http.base.HttpOperationFailedException: HTTP operation failed invoking https://petstore3.swagger.io/api/v3/api/v3/pet/findByStatus?status=available with statusCode: 404

尝试使用 Petstore 规范的 v2 和 v3。还尝试通过在 application.properties 中设置basePath属性并将其作为camel-rest-openapi组件上的查询参数来覆盖规范中的basePath。

Answer 1

openapi.json 包含

"servers":[{"url":"/api/v3"}]

，它不是完整的 URL，可能会导致一些问题。

在文档中 https://camel.apache.org/components/4.4.x/rest-openapi-component.html 他们设置了参数

host=https://petstore3.swagger.io

，无需使用

basePath

参数就足够了。