[jira] [Commented] (MESOS-1446) Create an abstraction for launching an operation in a subprocess.

["Jie Yu (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/MESOS-1446?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14017265#comment-14017265 ] 

Jie Yu commented on MESOS-1446:
-------------------------------

https://reviews.apache.org/r/22224/

> Create an abstraction for launching an operation in a subprocess.
> -----------------------------------------------------------------
>
>                 Key: MESOS-1446
>                 URL: https://issues.apache.org/jira/browse/MESOS-1446
>             Project: Mesos
>          Issue Type: Improvement
>            Reporter: Jie Yu
>            Assignee: Jie Yu
>
> Currently, we create a separate binary for each such operation. For example, mesos-fetcher, mesos-executor, mesos-usage, etc.
> This becomes more and more tedious as we need more and more such operation in slave and containerizer. Instead of creating a new binary each time we want to introduce an operation, what about having the following interface.
> The user can define customized "execute" function and customized flags. We can have a single binary taking care of all operations (or have a few binaries each of which takes care of a subset of operations).
> {noformat}
> // Represents an operation to be executed by a subprocess.
> template <typename F>
> class Operation
> {
> public:
>   virtual ~Operation() {}
>   // Returns the name of this operation.
>   virtual std::string name() const = 0;
>   // Defines the operation that will be executed by a subprocess.
>   virtual Try<Nothing> execute(const F& flags) = 0;
>   // Launches this operation in a subprocess.
>   process::Future<Option<int> > launch(
>       const F& flags,
>       const std::string& executable,
>       const Option<int>& stdout = None(),
>       const Option<int>& stderr = None());
> };
> {noformat}



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