Caused by: com.gooddata.GoodDataRestException: 415: [request_id=xyz] Content type 'application/xml;charset=UTF-8' not supported

[BenDol]

Having trouble getting the Afm execution working.
Caused by: com.gooddata.GoodDataRestException: 415: [request_id=tzRYVbhAWy3Z8aTS] Content type 'application/xml;charset=UTF-8' not supported

Project insclixProject = goodDataService.getProjectService().getProjectById("XYZ");
ExecuteAfmService executeAfmService = goodDataService.getExecuteAfmService();
MetadataService metadataService = goodDataService.getMetadataService();

Attribute attr = metadataService.getObj(insclixProject, Attribute.class, Restriction.title("PaymentMethod"));
Metric metric = metadataService.getObj(insclixProject, Metric.class, Restriction.title("@NetUnits"));

Afm afm = new Afm()
    // How
    .addAttribute(new AttributeItem(new IdentifierObjQualifier(attr.getDefaultDisplayForm().getIdentifier()), "a1"))
    // What
    .addMeasure(new MeasureItem(new SimpleMeasureDefinition(new UriObjQualifier(metric.getUri())), "m1"));
    // TODO Filter

Execution execution = new Execution(afm);
ExecutionResponse response = executeAfmService.executeAfm(insclixProject, execution);
logger.info(response.getExecutionResultUri());
logger.info(response.toString());

Results in:

java.lang.IllegalStateException: Failed to execute CommandLineRunner
	at org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:816)
	at org.springframework.boot.SpringApplication.callRunners(SpringApplication.java:797)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:324)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1260)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1248)
	at com.insclix.dashboard.EmbeddedWebApplication.main(EmbeddedWebApplication.java:54)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at com.intellij.rt.execution.CommandLineWrapper.main(CommandLineWrapper.java:67)
Caused by: com.gooddata.GoodDataException: Unable to execute AFM
	at com.gooddata.sdk.service.executeafm.ExecuteAfmService.executeAfm(ExecuteAfmService.java:77)
	at com.insclix.dashboard.DevIntitializer.lambda$testData$0(DevIntitializer.java:103)
	at org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:813)
	... 10 common frames omitted
Caused by: com.gooddata.GoodDataRestException: 415: [request_id=e0WU2jcSXi0r9LAb] Content type 'application/xml;charset=UTF-8' not supported
	at com.gooddata.sdk.service.util.ResponseErrorHandler.handleError(ResponseErrorHandler.java:55)
	at org.springframework.web.client.ResponseErrorHandler.handleError(ResponseErrorHandler.java:63)
	at org.springframework.web.client.RestTemplate.handleResponse(RestTemplate.java:778)
	at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:736)
	at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:670)
	at org.springframework.web.client.RestTemplate.postForObject(RestTemplate.java:414)
	at com.gooddata.sdk.service.executeafm.ExecuteAfmService.executeAfm(ExecuteAfmService.java:71)
	... 12 common frames omitted

I wasn't able to find any resource on this particular issue.
Any help is appreciated.

[BenDol]

Manually overriding the Content-Type header in the settings resolves this issue:

    @Bean
    @ConditionalOnMissingBean
    public GoodDataSettings goodDataSettings() {
        GoodDataSettings settings = new GoodDataSettings();
        settings.setPresetHeader("Content-Type", ContentType.APPLICATION_JSON.toString());
        return settings;
    }

but now I'm getting:

Caused by: com.gooddata.GoodDataRestException: 400: [request_id=wYTzCwTOrOcdjiOw] Malformed request: [Parsing error: Unexpected character ('<' (code 60)): expected a valid value (number, String, array, object, 'true', 'false' or 'null')
 at [Source: (<hidden>ResetableServletInputStream); line: 1, column: 2]]

[BenDol]

Okay so the reason the XML content type is added is because the RestTemplate adds a the MappingJackson2XmlHttpMessageConverter message converter that processes the request. So removing this from the RestTemplate message converters resolves the issue. Might need to explicitly define what message converter is used.

[jimirocks]

@BenDol thanks for reporting the issue - just to clarify:

1. it seems you are using 3.0.0-RC version right?
2. could you tell us the version of spring framework you use? (I guess they may be changed the default set of converters or so...)
3. Share us the exact code how do you create the GoodData instance and underlying RestTemplate

[liry]

FYI: ad 1) no, logs say that "GoodData-Java-SDK/2.34.0+api1" version was used

[BenDol]

I changed to use the latest version 3.0.0-RC.3+api3 while trying to resolve it, but @liry is correct I initially was using 2.34.0+api1. The issue occurs in either.

GoodData: 3.0.0-RC.3+api3
Spring: 5.1.5.RELEASE

The reason I'm experiencing this is that the RestTemplate detects what libraries you have in your classpath and add the message converters to the list and for what ever reason the MappingJackson2XmlHttpMessageConverter is being used (likely its just the first in the list before JSON). We need to make sure the RestTemplate favors the MappingJackson2HttpMessageConverter.

RestTemplate:

...

jackson2XmlPresent = ClassUtils.isPresent("com.fasterxml.jackson.dataformat.xml.XmlMapper", classLoader);

...

if (jackson2XmlPresent) {
    this.messageConverters.add(new MappingJackson2XmlHttpMessageConverter());
}

If you want to reproduce the issue just add Maven: com.fasterxml.jackson.dataformat:jackson-dataformat-xml to your project.

[jimirocks]

@BenDol thanks for investigation and sorry for inactivity due to vacancies. We will try to find the way for ensuring the correct set of converters when GoodData is created.

At the same time I suppose you resolved the situation by excluding dataformat-xml from classpath?