[keycloak-user] Keycloak and Tomcat 8 deserialize cors-allowed-methods

[Christopher Wallace]

Keycloak Users,

I am attempting to configure Keycloak with Tomcat 8 and have deployed the
following:

/WEB-INF/web.xml
<web-app xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/
xml/ns/javaee/web-app_3_0.xsd"
version="3.0">
<module-name>customer-portal</module-name>
<security-constraint>
<web-resource-collection>
<web-resource-name>mprworktrac</web-resource-name>
<url-pattern>/mprworktrac</url-pattern>
</web-resource-collection>
<auth-constraint>
<role-name>user</role-name>
</auth-constraint>
</security-constraint>
<security-constraint>
<web-resource-collection>
<url-pattern>/mprworktrac</url-pattern>
</web-resource-collection>
<user-data-constraint>
<transport-guarantee>CONFIDENTIAL</transport-guarantee>
</user-data-constraint>
</security-constraint>
<login-config>
<auth-method>BASIC</auth-method>
<realm-name>this is ignored currently</realm-name>
</login-config>
<security-role>
<role-name>admin</role-name>
</security-role>
<security-role>
<role-name>user</role-name>
</security-role>
</web-app>

/META-INF/content.xml
<Context path="/mprworktrac">
<Valve className="org.keycloak.adapters.tomcat.KeycloakAuthenticatorValve"/>
</Context>


/WEB-INF/keyloak.json
{
"realm" : "worktrac",
"resource" : "customer-portal",
"realm-public-key" : "MIGfMA0GCSqGSIb3D...31LwIDAQAB",
"auth-server-url" : "https://localhost:8443/auth",
"ssl-required" : "external",
"use-resource-role-mappings" : false,
"enable-cors" : true,
"cors-max-age" : 1000,
"cors-allowed-methods" : [ "POST", "PUT", "DELETE", "GET" ],
"bearer-only" : false,
"expose-token" : true,
"credentials" : {
"secret" : "234234-234234-234234"
},
"connection-pool-size" : 20,
"disable-trust-manager": false,
"allow-any-hostname" : false,
"truststore" :
"/opt/keycloak-appliance-dist-all-1.1.0.Final/keycloak/standalone/configuration/secret.jks",
"truststore-password" : "secret",
"client-keystore" :
"/opt/keycloak-appliance-dist-all-1.1.0.Final/keycloak/standalone/configuration/secret.jks",
"client-keystore-password" : "secret",
"client-key-password" : "secret"
}

Extracted keycloak-tomcat8-adapter-dist-1.1.0.Final.zip to
$CATALINA_HOME/lib

I receive the following in catalina.out on startup:
java.lang.RuntimeException: org.codehaus.jackson.map.JsonMappingException:
Can not deserialize instance of java.lang.String out of START_ARRAY token
 at [Source: java.io.FileInputStream at 7ff0e2e8; line: 9, column: 22]
(through reference chain:
org.keycloak.representations.adapters.config.AdapterConfig["cors-allowed-methods"])
    at
org.keycloak.adapters.KeycloakDeploymentBuilder.loadAdapterConfig(KeycloakDeploymentBuilder.java:104)
    at
org.keycloak.adapters.KeycloakDeploymentBuilder.build(KeycloakDeploymentBuilder.java:93)
    at
org.keycloak.adapters.tomcat.AbstractKeycloakAuthenticatorValve.keycloakInit(AbstractKeycloakAuthenticatorValve.java:116)
    at
org.keycloak.adapters.tomcat.AbstractKeycloakAuthenticatorValve.lifecycleEvent(AbstractKeycloakAuthenticatorValve.java:65)
    at
org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)
    at
org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)
    at
org.apache.catalina.util.LifecycleBase.setStateInternal(LifecycleBase.java:402)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:168)
    at
org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:725)
    at
org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:701)
    at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:714)
    at
org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1069)
    at
org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1719)
    at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)
Caused by: org.codehaus.jackson.map.JsonMappingException: Can not
deserialize instance of java.lang.String out of START_ARRAY token
 at [Source: java.io.FileInputStream at 7ff0e2e8; line: 9, column: 22]
(through reference chain:
org.keycloak.representations.adapters.config.AdapterConfig["cors-allowed-methods"])
    at
org.codehaus.jackson.map.JsonMappingException.from(JsonMappingException.java:163)
    at
org.codehaus.jackson.map.deser.StdDeserializationContext.mappingException(StdDeserializationContext.java:219)
    at
org.codehaus.jackson.map.deser.std.StringDeserializer.deserialize(StringDeserializer.java:44)
    at
org.codehaus.jackson.map.deser.std.StringDeserializer.deserialize(StringDeserializer.java:13)
    at
org.codehaus.jackson.map.deser.SettableBeanProperty.deserialize(SettableBeanProperty.java:299)
    at
org.codehaus.jackson.map.deser.SettableBeanProperty$MethodProperty.deserializeAndSet(SettableBeanProperty.java:414)
    at
org.codehaus.jackson.map.deser.BeanDeserializer.deserializeFromObject(BeanDeserializer.java:697)
    at
org.codehaus.jackson.map.deser.BeanDeserializer.deserialize(BeanDeserializer.java:580)
    at
org.codehaus.jackson.map.ObjectMapper._readMapAndClose(ObjectMapper.java:2732)
    at
org.codehaus.jackson.map.ObjectMapper.readValue(ObjectMapper.java:1909)
    at
org.keycloak.adapters.KeycloakDeploymentBuilder.loadAdapterConfig(KeycloakDeploymentBuilder.java:102)
    ... 17 more

Your help is greatly appreciated as I am excited to get this working :-)

-- 
Chris Wallace
cjwallac at gmail.com
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