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https://issues.apache.org/jira/browse/KNOX-2762?focusedWorklogId=782734&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-782734
 ]

ASF GitHub Bot logged work on KNOX-2762:
----------------------------------------

                Author: ASF GitHub Bot
            Created on: 19/Jun/22 19:22
            Start Date: 19/Jun/22 19:22
    Worklog Time Spent: 10m 
      Work Description: smolnar82 commented on code in PR #596:
URL: https://github.com/apache/knox/pull/596#discussion_r901147476


##########
gateway-provider-security-authz-composite/src/main/java/org/apache/knox/gateway/deploy/impl/CompositeAuthzDeploymentContributor.java:
##########
@@ -57,22 +58,23 @@ public void contributeFilter( DeploymentContext context, 
Provider provider, Serv
     Map<String, String> providerParams = provider.getParams();
     String providerNames = providerParams.get("composite.provider.names");
     if (!providerNames.isEmpty()) {
-    String[] names = parseProviderNames(providerNames);
-    for (String name : names) {
-      getProviderSpecificParams(resource, params, providerParams, name);
-      DeploymentFactory.getProviderContributor("authorization", name)
-              .contributeFilter(context, provider, service, resource, params);
-      params.clear();
-    }
+      List<String> names = parseProviderNames(providerNames);
+      for (String name : names) {
+        getProviderSpecificParams(resource, params, providerParams, name);
+        DeploymentFactory.getProviderContributor("authorization", name)
+                .contributeFilter(context, provider, service, resource, 
params);
+        params.clear();
+      }
     }
   }
 
-  String[] parseProviderNames(String providerNames) {
-    String[] b = providerNames.split("\\s*,\\s*");
-    for (int i = 0; i < b.length; i++) {
-      b[i] = b[i].trim();
+  List parseProviderNames(String providerNames) {
+    String[] providerNamesList = providerNames.split("\\s*,\\s*");

Review Comment:
   +1 to @moresandeep 's comment!





Issue Time Tracking
-------------------

    Worklog Id:     (was: 782734)
    Time Spent: 1h 50m  (was: 1h 40m)

> Whitespaces around delimiters in composite provider names gives 
> NullPointerException
> ------------------------------------------------------------------------------------
>
>                 Key: KNOX-2762
>                 URL: https://issues.apache.org/jira/browse/KNOX-2762
>             Project: Apache Knox
>          Issue Type: Bug
>          Components: Server
>    Affects Versions: 1.6.0
>            Reporter: Harshil Jhaveri
>            Assignee: Harshil Jhaveri
>            Priority: Minor
>             Fix For: 2.0.0
>
>         Attachments: NPE gateway log.png
>
>          Time Spent: 1h 50m
>  Remaining Estimate: 0h
>
> When giving space before the delimiter for composite.provider.names in 
> composite authorisation provider. The topology deployment is failing and 
> returning a null pointer exception.
> The topology state:
> {code:java}
> <provider> 
>      <role>authorization</role> 
>      <name>CompositeAuthz</name> 
>      <enabled>true</enabled> 
>      <param>  
>          <name>composite.provider.names</name> 
>          <value>AclsAuthz ,XASecurePDPKnox</value>
>      </param> 
>      <param> 
>           <name>AclsAuthz.ranger.acl</name> 
>           <value>*;;</value> </param></provider>
> </provider>{code}
> {color:#e8bf6a}CC:{color} [~pzampino] [~smore] [~smolnar]



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