Allow for specific ordering of events

[krainboltgreene]

So here's my output:

While you can't tell, its:

• query decode time
• query idle time
• query query time
• query queue time
• query total time
• endpoint stop duration

However my install code looks like this:

    Plug.Telemetry.ServerTiming.install([
      {[:phoenix, :endpoint, :stop], :duration},
      {[:database, :repository, :query], :total_time},
      {[:database, :repository, :query], :decode_time},
      {[:database, :repository, :query], :query_time},
      {[:database, :repository, :query], :queue_time},
      {[:database, :repository, :query], :idle_time}
    ])

How are these orders so different?

[hauleth]

Current ordering depends on the order in which events happened in the application, not on the order of the events in the install/1 call. Reason for that is that in future I want to support total when w3c/server-timing#44 will land. Ordering events in the user-provided way may then be confusing default.

[krainboltgreene]

Oof, that's a rough problem, I can understand your hesitation.