[MESOS-5259] Refactor the mesos-fetcher binary to use the uri::Fetcher as a backend

• Type: Task
• Status: Accepted
• Priority: Major
• Resolution: Unresolved
• Component/s: fetcher
• Labels: fetcher mesosphere
• Epic Link: URI Fetcher
• Story Points: 3
• Assignee: Unassigned
• Reporter: Joseph Wu
• Shepherd: Jie Yu
• Created: 22/Apr/16 23:27
• Updated: 03/Aug/17 23:11

Description

This is an intermediate step for combining the mesos-fetcher binary and uri::Fetcher.

The download method should be replaced with uri::Fetcher::fetch.
https://github.com/apache/mesos/blob/653eca74f1080f5f55cd5092423506163e65d402/src/launcher/fetcher.cpp#L179

Combining the two will:

• Attach the uri::Fetcher to the existing Fetcher caching logic.
• Remove some code duplication for downloading URIs.

Issue Links

• blocks: MESOS-5261 Combine the internal::slave::Fetcher class and mesos-fetcher binary
• is blocked by: MESOS-5260 Extend the uri::Fetcher::Plugin interface to include a "fetchSize"