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https://issues.apache.org/jira/browse/CLOUDSTACK-9438?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15610845#comment-15610845
 ] 

ASF subversion and git services commented on CLOUDSTACK-9438:
-------------------------------------------------------------

Commit c9e7ccf46e8e52bf4f6ffb45431cad42524f1ee7 in cloudstack's branch 
refs/heads/master from [~rajanik]
[ https://git-wip-us.apache.org/repos/asf?p=cloudstack.git;h=c9e7ccf ]

Merge pull request #1615 from nvazquez/nfsConfigKey

CLOUDSTACK-9438: Fix for CLOUDSTACK-9252 - Make NFS version changeable in 
UIJIRA TICKET: https://issues.apache.org/jira/browse/CLOUDSTACK-9438

### Introduction

>From #1361 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.

### 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.

### 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 `ImageStoreDetailsDao` 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

* pr/1615:
  CLOUDSTACK-9438: Fix for CLOUDSTACK-9252 - Make NFS version changeable in UI

Signed-off-by: Rajani Karuturi <rajani.karut...@accelerite.com>


> 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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