Ambiguous Handler Methods Error When Seeding Cache Using GeoServer REST API

[iungurianu]

Description:

I am attempting to create a cache for a layer using the GeoServer Cloud REST API and GeoWebCache. Despite following the configuration steps, I am encountering an java.lang.IllegalStateException error related to ambiguous handler methods when trying to seed the cache.

Environment:

GeoServer Cloud: 1.8.9
GeoWebCache version: 1.25

Steps to Reproduce:

1. GeoWebCache Configuration:

• My geowebcache.xml configuration is as follows:

<?xml version="1.0" encoding="utf-8"?>
<gwcConfiguration xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://geowebcache.org/schema/1.24.0 http://geowebcache.org/schema/1.24.0/geowebcache.xsd" xmlns="http://geowebcache.org/schema/1.24.0">
  <version>1.24.0</version>
  <backendTimeout>120</backendTimeout>
  <blobStores/>
  <gridSets>
    <gridSet>
      <name>EPSG:3857</name>
         <srs>
           <number>3857</number>
        </srs>
         ...
    </gridSet>
  </gridSets>
  <layers/>
</gwcConfiguration>

2. API Call

• I use the following CURL command to initiate the caching:

curl -u admin:password -XPOST -H "Content-type: text/xml" -d '<seedRequest> 
  <name>workspace:layer</name>
  <srs><number>3857</number></srs>
  <zoomStart>0</zoomStart>
  <zoomStop>8</zoomStop>
  <format>image/png</format>
  <type>reseed</type>
  <threadCount>2</threadCount>
</seedRequest>' "http://localhost:63068/geoserver/gwc/rest/seed/workspace:layer.xml"

3. Error Encountered:

• Accessing the endpoint directly in the browser or using the API results in an XML file without any style information, showing only <long-array-array/>.
• The logs display the following error:

java.lang.IllegalStateException: Ambiguous handler methods mapped for '/geoserver/gwc/rest/seed/workspace:layer.xml': {public org.springframework.http.ResponseEntity org.geowebcache.rest.controller.SeedController.seedOrTruncateWithXmlPayload(javax.servlet.http.HttpServletRequest,java.io.InputStream,java.lang.String), public org.springframework.http.ResponseEntity org.geowebcache.rest.controller.SeedController.doPost(javax.servlet.http.HttpServletRequest,java.io.InputStream,java.lang.String,java.util.Map)}

• The error inside the Terminal after running the curl command:
  <Map><timestamp>1722926495200</timestamp><status>500</status><error>Internal Server Error</error><path>/gwc/rest/seed/workspace:layer.xml</path></Map>

4. Additional information

• the layer uses the default style