Connected Devices/Projects/Metrics/Sprint 1

General info

• Participants: Tamara, Russ, Dylan, Michael, Dominik, Maria

• Links of interest:
  • Connected Devices Metrics Library Design
  • Connected Devices Crash Ping Format proposal

Sprint objectives

• The first sprint will focus on transmitting a sample crash ping. We created an additional backlog list for the Crash Ping epic in Trello and took as much of that into the first sprint as we could. Some of the prototype tasks for sending crash ping are:
  • API so we don’t block the main thread
  • Http hyper library
  • Investigate getting os/platform info
  • JSON serialization - what is the best library here?
  • Add the skeleton to github so we can share
  • Figure out how to handle retries?
  • Write some unit tests.
  • Add the flate library to the crate
  • Gzip the payload
  • Send it to server and verify that it’s received

Tasks or Bugs committed for this sprint

Task	Assigned	Status	Status Notes
Create a thread inside a public API so we don’t block the main thread	Russ	Done
Add the skeleton to github	Tamara	Done	GitHub Repo for metrics controller: https://github.com/tamarahills/metrics_controller
JSON serialization	Russ	Done	First decision was using rustc-serialize but actually serde was decided to use instead. This is where the standard is going, it's supposed to be more efficient and have more features. Additionally, Tamara was able to serialize our complex nested structures with this vs. rustc_serialize
Team calendar and irc channel created for the team	Maria	Done	CD Metrics team and cd_metrics irc channel created and added all this info in the wiki
HTTP hyper library (Crash Ping)	Tamara
Send Crash Ping to server and verify that it’s received	Tamara
Review Firefox telemetry / crash pings to see if we could adapt for use in CD	Tamara		Created a draft ping: https://docs.google.com/document/d/1Mak6dpmmvAxhnbms34zCELSb_46s0-iaTQuCpkr8i34/edit
RN: POC for gzip rust implementation (for Crash Ping)	Russ	Done	Best option for a rust gzip seems to be this lib: https://github.com/alexcrichton/flate2-rs (Added to Controller repo)
Gzip the payload (for Crash Ping)	Russ
Background reading on existing Telemetry and Metrics tools at Mozilla	Michael
Create/improve documentation for the CD metric meetings	Maria	Done
Complete the CD metrics wiki with Program Status, Projects Deliverables and Milestones	Maria

Issues during this sprint

• Detailed tracking day by day in our Standby etherpad

Retrospective

Actions taken from last sprint

None, Sprint 1 is our first sprint