[ https://issues.apache.org/jira/browse/FELIX-6791?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Paul Rütter reassigned FELIX-6791: ---------------------------------- Assignee: Paul Rütter > Only a single format can be allowed when using Pax Web > ------------------------------------------------------ > > Key: FELIX-6791 > URL: https://issues.apache.org/jira/browse/FELIX-6791 > Project: Felix > Issue Type: Bug > Components: Health Checks > Affects Versions: healthcheck.core 2.0.14, healthcheck.core 2.1.0 > Environment: org.apache.felix.healthcheck.core 2.0.14 > org.ops4j.pax.web.pax-web-spi 8.30.0 > Reporter: Jonathan Wright > Assignee: Paul Rütter > Priority: Minor > Attachments: stacktrace.txt > > > {{HealthCheckExecutorServlet}} registers a new instance of > {{HealthCheckExecutorServlet$ProxyServlet}} for each allowed format. However, > it does not supply a unique name for each instance. This violates [Section > 102.2|https://docs.osgi.org/specification/osgi.cmpn/8.0.0/service.http.html#i1223311] > of the OSGi Http Service Specification, which includes the following > statement: > {quote}All {{Servlet}} objects and resource registrations share the same > name-space. If an attempt is made to register a resource or {{Servlet}} > object under the same name as a currently registered resource or {{Servlet}} > object, a {{NamespaceException}} is thrown. > {quote} > Pax Web enforces the above mentioned requirement (see [^stacktrace.txt]). As > a result, only one instance of {{HealthCheckExecutorServlet$ProxyServlet}} is > registered. To prevent {{Servlet}} registration errors when using Pax Web, > you have to set the {{allowed.formats}} configuration property to a single > value, e.g. {{{}allowed.formats=["json"]{}}}. > You cannot specify a name when registering a {{Servlet}} via the > {{org.osgi.service.http.HttpService}} API, so the 2.0.14 version of > {{HealthCheckExecutorServlet}} would need to be updated to use the Whiteboard > Pattern. The 2.1.0 version, which does use the Whiteboard Pattern, simply > needs to specify a unique {{osgi.http.whiteboard.servlet.name}} property > value for each {{HealthCheckExecutorServlet$ProxyServlet}} instance. -- This message was sent by Atlassian Jira (v8.20.10#820010)