[CONTROLLER-65] getting node details with JSON gets exception

Tue, 25 Jul 2023 08:22:50 +0000

Trying to get detailed resources for a node in JSON format results in an exception.

The URL is, for example:
http://192.168.4.1:8080/restconf/datastore/opendaylight-inventory:nodes/node/openflow:3

The Accept header is: application/vnd.yang.api+json

You can see the following exception:

<html>
<head>
<title>Apache Tomcat/7.0.32 - Error report</title>
<style>
<!--H1

{font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:22px;}

{font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:16px;}

{font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:14px;}

BODY

{font-family:Tahoma,Arial,sans-serif;color:black;background-color:white;}

{font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;}

{font-family:Tahoma,Arial,sans-serif;background:white;color:black;font-size:12px;}

{color : black;}

A.name

{color : black;}

{color : #525D76;}

-->
</style>
</head>
<body>
<h1>HTTP Status 500 - Value in SimpleNode should be type String</h1>
<HR size="1" noshade="noshade">
<p>
<b>type</b> Exception report
</p>
<p>
<b>message</b>
<u>Value in SimpleNode should be type String</u>
</p>
<p>
<b>description</b>
<u>The server encountered an internal error that prevented it from fulfilling this request.</u>
</p>
<p>
<b>exception</b>
<pre>java.lang.IllegalStateException: Value in SimpleNode should be type String
org.opendaylight.controller.sal.rest.impl.JsonMapper.writeValueOfNodeByType(JsonMapper.java:152)
org.opendaylight.controller.sal.rest.impl.JsonMapper.writeLeaf(JsonMapper.java:146)
org.opendaylight.controller.sal.rest.impl.JsonMapper.writeChildrenOfParent(JsonMapper.java:79)
org.opendaylight.controller.sal.rest.impl.JsonMapper.writeList(JsonMapper.java:120)
org.opendaylight.controller.sal.rest.impl.JsonMapper.writeChildrenOfParent(JsonMapper.java:67)
org.opendaylight.controller.sal.rest.impl.JsonMapper.writeList(JsonMapper.java:125)
org.opendaylight.controller.sal.rest.impl.JsonMapper.write(JsonMapper.java:34)
org.opendaylight.controller.sal.rest.impl.StructuredDataToJsonProvider.writeTo(StructuredDataToJsonProvider.java:53)
org.opendaylight.controller.sal.rest.impl.StructuredDataToJsonProvider.writeTo(StructuredDataToJsonProvider.java:26)
com.sun.jersey.spi.container.ContainerResponse.write(ContainerResponse.java:306)
com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1479)
com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1391)
com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1381)
com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:416)
com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:538)
com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:716)
javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
org.apache.catalina.filters.CorsFilter.handleNonCORS(CorsFilter.java:440)
org.apache.catalina.filters.CorsFilter.doFilter(CorsFilter.java:179)
</pre>
</p>
<p>
<b>note</b>
<u>The full stack trace of the root cause is available in the Apache Tomcat/7.0.32 logs.</u>
</p>
<HR size="1" noshade="noshade">
<h3>Apache Tomcat/7.0.32</h3>
</body>
</html>

Steps to reproduce:
1. Start mininet
2. Connect the controller to mininet
3. In restconf, try to get flow-node details in JSON format,

and the problem will occur

OpenDaylight JIRA

[CONTROLLER-65] getting node details with JSON gets exception