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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CLOUDSTACK-9438) Fix for CLOUDSTACK-9252 - Make NFS version changeable in UI
Date Tue, 02 Aug 2016 13:31:20 GMT

    [ https://issues.apache.org/jira/browse/CLOUDSTACK-9438?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15403960#comment-15403960
] 

ASF GitHub Bot commented on CLOUDSTACK-9438:
--------------------------------------------

Github user nvazquez commented on a diff in the pull request:

    https://github.com/apache/cloudstack/pull/1615#discussion_r73154622
  
    --- Diff: engine/schema/src/org/apache/cloudstack/storage/datastore/db/ImageStoreDaoImpl.java
---
    @@ -16,7 +16,7 @@
      * specific language governing permissions and limitations
      * under the License.
      */
    -package org.apache.cloudstack.storage.image.db;
    --- End diff --
    
    Hi @koushik-das, the reason was to avoid a dependency cycle on Maven poms, I tried explaining
it under *Important* section in this PR's description


> Fix for CLOUDSTACK-9252 - Make NFS version changeable in UI
> -----------------------------------------------------------
>
>                 Key: CLOUDSTACK-9438
>                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-9438
>             Project: CloudStack
>          Issue Type: Improvement
>      Security Level: Public(Anyone can view this level - this is the default.) 
>            Reporter: Nicolas Vazquez
>            Assignee: Nicolas Vazquez
>
> h3. Introduction
> From [9252|https://issues.apache.org/jira/browse/CLOUDSTACK-9252] it was possible to
configure NFS version for secondary storage mount. 
> However, changing NFS version requires inserting an new detail on {{image_store_details}}
table, with {{name = 'nfs.version'}} and {{value = X}} where X is desired NFS version, and
then restarting management server for changes to take effect.
> Our improvement aims to make NFS version changeable from UI, instead of previously described
workflow.
> h3. Proposed solution
> Basically, NFS version is defined as an image store ConfigKey, this implied:
> * Adding a new Config scope: *ImageStore*
> * Make {{ImageStoreDetailsDao}} class to extend {{ResourceDetailsDaoBase}} and {{ImageStoreDetailVO}}
implement {{ResourceDetail}}
> * Insert {{'display'}} column on {{image_store_details}} table
> * Extending {{ListCfgsCmd}} and {{UpdateCfgCmd}} to support *ImageStore* scope, which
implied:
> ** Injecting {{ImageStoreDetailsDao}} and {{ImageStoreDao}} on {{ConfigurationManagerImpl}}
class, on {{cloud-server}} module.
> h4. Important
> It is important to mention that {{ImageStoreDaoImpl}} and {{ImageStoreDetailsDaoImpl}}
classes were moved from {{cloud-engine-storage}} to {{cloud-engine-schema}} module in order
to Spring find those beans to inject on {{ConfigurationManagerImpl}} in {{cloud-server}} module.
> We had this maven dependencies between modules:
> * {{cloud-server --> cloud-engine-schema}}
> * {{cloud-engine-storage --> cloud-secondary-storage --> cloud-server}}
> As {{ImageStoreDaoImpl}} and {{ImageStoreDetailsDaoImpl}} were defined in {{cloud-engine-storage}},
and they needed in {{cloud-server}} module, to be injected on {{ConfigurationManagerImpl}},
if we added dependency from {{cloud-server}} to {{cloud-engine-storage}} we would introduce
a dependency cycle. To avoid this cycle, we moved those classes to {{cloud-engine-schema}}
module



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