Wikimedia Technology/Annual Plans/FY2019/TEC2: Modern Event Platform/Goals
Program Goals and Status for FY18/19[edit]
- Goal Owner: Nuria Ruiz
- Program Goals for FY18/19: A modern event data platform will make it easier for engineers to build infrastructure for Knowledge as a Service. It will enable measuring the effectiveness of engineering projects, and also provide a base for smart reactive services, such as dependency tracking.
- Annual Plan: TEC2: Modern Event Platform
- Primary Goal is Knowledge as a Service: Evolve our systems and structures
- Tech Goal: Sustaining
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Outcome 1 / Output 1.1 - 1.4[edit]
Wikimedia engineers have a reliable, scalable, and comprehensive platform for building services that produce and consume event data for analytics and production.
- Events can easily and reliably be produced by internal and external clients and consumed by other internal services.
Dependencies on: Analytics, Services, SRE
Goal[edit]
- TechCom RFCs underway and technical decisions made. (more)
Status[edit]
Note: July 2018
- Discussed JSONSchema versus Avro and decision was taken to use JSONSchemas and is
Done task T198256
Note: August 2018
- Discussed schema registry and metadata service Done task T201643
- Discussed scalable event intake service Done task T201963
Note: September 18, 2018
- Done RFC for schema registry closing soon. We will leave metadata/config service out of MVP. We will work on scalable event intake as part of next quarter goals.
[edit]
Outcome 1 / Output 1.1[edit]
Wikimedia engineers have a reliable, scalable, and comprehensive platform for building services that produce and consume event data for analytics and production.
- Events can easily and reliably be produced by internal and external clients and consumed by other internal services.
Dependencies on: Core Platform Team, SRE
Goal[edit]
- Development of intake service for events whose transport is JSONSchema/http task T201068 Done
Status[edit]
Note: October 19, 2018
- Planing on what language/platform we are going to be building the intake service Done
Note: November 14, 2018
- Intake service prototype is being built in node task T206815 Done
Note: December 12, 2018
- Code can be found here: https://github.com/wikimedia/eventgate Done
[edit]
Outcome 1 / Output 1.1[edit]
Wikimedia engineers have a reliable, scalable, and comprehensive platform for building services that produce and consume event data for analytics and production.
- Events can easily and reliably be produced by internal and external clients and consumed by other internal services.
Dependencies on: Analytics Engineering, Core Platform Team, SRE, Release Engineering
Goal(s)[edit]
- Deployment of Stream Intake Service (AKA EventGate) using TEC3: Deployment Pipeline Done
- Mediawiki Monolog+Kafka usage migrated to EventGate. task T214080 task T216163
In progress - STRECH GOAL: Migration of some mediawiki 'Eventbus' events to EventGate.
- STRECH GOAL: Decomission old 'analytics' Kafka cluster.
Status[edit]
To do January 2019
- Deployment via Docker & Kubernetes in beta and then production. task T211247 Done
Note: February 25, 2019
- Produce Monolog based events from Mediawiki to EventGate and create Hive tables in Hadoop. In progress
To do March 2019
Proposed:
- Get users of Monolog based events to use new tables.
- Begin migrating some Mediawiki 'Eventbus' events to EventGate.
- If possible decommission 'analytics' Kafka cluster.
Marked 
Done on March 14, 2019:
- Deployment of Stream Intake Service
Outcome 1 / Output 1.3[edit]
It is clear to engineers how to design event schemas to support analytics and production features to ease future maintenance and evolution of those systems. Dependencies on: Analytics Engineering, Core Platform Team
Goal(s)[edit]
- Backwards compatibility checks in schema repository CI task T206814 In progress
Status[edit]
To do January 2019
- JSONSchema backwards compatibility library implemented task T206889 In progress
Note: February 25, 2019
- mediawiki/event-schemas repository Jenkins CI with backwards compatibility checks In progress
To do March 2019
- Code on this task is ready to go, checks are not enabled as there is now only two schemas that can benefit from it.
[edit]
Outcome / Output[edit]
Wikimedia engineers have a reliable, scalable, and comprehensive platform for building services that produce and consume event data for analytics and production.
- Events can easily and reliably be produced by internal and external clients and consumed by other internal services.
Dependencies on: Analytics Engineering, Core Platform Team, SRE, Release Engineering
Goal(s)[edit]
- Decommission old 'analytics' Kafka cluster.T183303 Done
- Deploy an instance of EventGate that processes events sent to kafka main cluster T218346 Done
- Schema Repository CI for convention and backwards compatibility enforcement
Status[edit]
To do May 2019
- In progress In order to decomission the cluster we need to turn off the old avro workflow, we hope to do that in June.
Also, kafka main event gate deployment is 
In progress
To do June 2019
Some of the cI work will move to next quarter