Failed to read a GraphQL query from a ConfigMap

[abkieling]

GraphQL queries with the query specified in the URI work fine but queries stored in ConfigMaps don't seem to work. An exception is thrown when trying to read the query text.

Command:

kamel run --configmap=hello-config hello.groovy --dev

hello.groovy

from('timer:tick?period=10s')
    .to("graphql://https://countries.trevorblades.com/?query={{query.continents}}")
    .to('log:info')

hello-config.yaml

apiVersion: v1
kind: ConfigMap
metadata:
  name: hello-config
data:
  application.properties: |
    query.continents={continents{code name}}

Error:

[1] Exception in thread "main" org.apache.camel.FailedToCreateRouteException: Failed to create route route1 at: >>> To[graphql://https://countries.trevorblades.com/?query={{query.continents}}] <<< in route: Route(route1)[From[timer:tick?period=10s] -> [To[graphql://h... because of Missing {{ from the text: {continents{code name}}
[1] 	at org.apache.camel.reifier.RouteReifier.doCreateRoute(RouteReifier.java:386)
[1] 	at org.apache.camel.reifier.RouteReifier.createRoute(RouteReifier.java:108)
[1] 	at org.apache.camel.impl.DefaultModel.start(DefaultModel.java:356)
[1] 	at org.apache.camel.impl.DefaultModel.startRoute(DefaultModel.java:330)
[1] 	at org.apache.camel.impl.DefaultModel.startRouteDefinitions(DefaultModel.java:323)
[1] 	at org.apache.camel.impl.DefaultModel.startRouteDefinitions(DefaultModel.java:302)
[1] 	at org.apache.camel.impl.AbstractModelCamelContext.startRouteDefinitions(AbstractModelCamelContext.java:342)
[1] 	at org.apache.camel.impl.engine.AbstractCamelContext.doStartCamel(AbstractCamelContext.java:2595)
[1] 	at org.apache.camel.impl.engine.AbstractCamelContext.lambda$doStart$2(AbstractCamelContext.java:2443)
[1] 	at org.apache.camel.impl.engine.AbstractCamelContext.doWithDefinedClassLoader(AbstractCamelContext.java:2460)
[1] 	at org.apache.camel.impl.engine.AbstractCamelContext.doStart(AbstractCamelContext.java:2441)
[1] 	at org.apache.camel.support.service.ServiceSupport.start(ServiceSupport.java:117)
[1] 	at org.apache.camel.impl.engine.AbstractCamelContext.start(AbstractCamelContext.java:2350)
[1] 	at org.apache.camel.k.main.ApplicationRuntime$MainAdapter.doStart(ApplicationRuntime.java:189)
[1] 	at org.apache.camel.support.service.ServiceSupport.start(ServiceSupport.java:117)
[1] 	at org.apache.camel.main.MainSupport.run(MainSupport.java:77)
[1] 	at org.apache.camel.k.main.ApplicationRuntime.run(ApplicationRuntime.java:76)
[1] 	at org.apache.camel.k.main.Application.main(Application.java:42)
[1] Caused by: java.lang.IllegalArgumentException: Missing {{ from the text: {continents{code name}}
[1] 	at org.apache.camel.component.properties.DefaultPropertiesParser$ParsingContext.readProperty(DefaultPropertiesParser.java:139)
[1] 	at org.apache.camel.component.properties.DefaultPropertiesParser$ParsingContext.doParse(DefaultPropertiesParser.java:102)
[1] 	at org.apache.camel.component.properties.DefaultPropertiesParser$ParsingContext.doParse(DefaultPropertiesParser.java:113)
[1] 	at org.apache.camel.component.properties.DefaultPropertiesParser$ParsingContext.parse(DefaultPropertiesParser.java:86)
[1] 	at org.apache.camel.component.properties.DefaultPropertiesParser.parseUri(DefaultPropertiesParser.java:59)
[1] 	at org.apache.camel.component.properties.PropertiesComponent.parseUri(PropertiesComponent.java:262)
[1] 	at org.apache.camel.component.properties.PropertiesComponent.parseUri(PropertiesComponent.java:166)
[1] 	at org.apache.camel.impl.engine.AbstractCamelContext.resolvePropertyPlaceholders(AbstractCamelContext.java:1661)
[1] 	at org.apache.camel.model.ProcessorDefinitionHelper.resolvePropertyPlaceholders(ProcessorDefinitionHelper.java:806)
[1] 	at org.apache.camel.reifier.ProcessorReifier.makeProcessorImpl(ProcessorReifier.java:551)
[1] 	at org.apache.camel.reifier.ProcessorReifier.makeProcessor(ProcessorReifier.java:537)
[1] 	at org.apache.camel.reifier.ProcessorReifier.addRoutes(ProcessorReifier.java:250)
[1] 	at org.apache.camel.reifier.RouteReifier.doCreateRoute(RouteReifier.java:384)
[1] 	... 17 more

[nicolaferraro]

I guess there's something wrong in the parser or we need some escaping. The }} in the query makes the parser to require a {{.

[abkieling]

Yep, there seems to be an issue with the parser when the property values contain double curly braces. About my example, thanks for letting me know that I should be using the --resource flag to expose the GraphQL query file to the app. It's working fine the following way:

Command

kamel run hello.groovy --resource hello.graphql

hello.groovy

from('timer:tick?period=10s')
    .to("graphql://https://countries.trevorblades.com/?queryFile=hello.graphql")
    .to('log:info')

hello.graphql

query Continents {
  continents {
    code
    name
  }
}

Output

...
2020-04-13 11:31:11.324 �[32mINFO �[m [Camel (camel-k) thread #1 - timer://tick] info - Exchange[ExchangePattern: InOnly, BodyType: String, Body: {"data":{"continents":[{"code":"AF","name":"Africa"},{"code":"AN","name":"Antarctica"},{"code":"AS","name":"Asia"},{"code":"EU","name":"Europe"},{"code":"NA","name":"North America"},{"code":"OC","name":"Oceania"},{"code":"SA","name":"South America"}]}}]
...

[abkieling]

@nicolaferraro The issue seems to be in the Camel code, not in the Camel K code. Shall I close this issue?

[lburgazzoli]

@akieling yes please