zeroflag opened a new pull request, #745:
URL: https://github.com/apache/knox/pull/745
## What changes were proposed in this pull request?
NullPointerException is thrown when the referenced provider is invalid in a
composite provider.
```
<provider>
<role>authorization</role>
<name>CompositeAuthz</name>
<enabled>true</enabled>
<param>
<name>composite.provider.names</name>
<value>x</value>
</param>
</provider>
```
## How was this patch tested?
Manually:
```
2023-03-29 10:19:20,541 ERROR knox.gateway
(DeploymentFactory.java:contributeServices(514)) - Failed to contribute service
[role=WEBHDFS, name=null]: org.apache.knox.gateway.deploy.DeploymentException:
Invalid composite provider name: x role: authorization provider: CompositeAuthz
topology: sandbox
org.apache.knox.gateway.deploy.DeploymentException: Invalid composite
provider name: x role: authorization provider: CompositeAuthz topology: sandbox
at
org.apache.knox.gateway.deploy.impl.CompositeAuthzDeploymentContributor.contributeFilter(CompositeAuthzDeploymentContributor.java:71)
~[gateway-provider-security-authz-composite-2.1.0-SNAPSHOT.jar:2.1.0-SNAPSHOT]
````
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