Using Temporal.io for Workflow Orchestration

This is source code for the article Evaluating Temporal for Workflow Orchestration.

Prerequisites/Setup

• MySQL 5.7 or above
  • if running within Docker then,
    • Run docker run -p 3307:3306 --name=mysqldb -e MYSQL_ROOT_PASSWORD=passwd -d mysql:5.7
    • Access db using docker exec -it mysqldb bash && mysql -u root -p
    • Create database using create database temporaldb on mysql CLI
• Temporal
  • Follow the instructions provided here to start Temporal server in Docker.
• Install Go 1.15 or above
• From root folder of repository,
  • Start Worker using go run worker\main.go
  • Start workflow using go run start\main.go
  • Start HTTP Service using go run service\server.go
  • As such workflow imports dummy set of users defined in shared.go.
    • Check for list of unapproved users at http://localhost:8080/Users
    • Simulate user approval by post Ids using CURL or any other http tool. Using Curl curl -X POST -d 'id\n1\2\n' https://localhost:8080/Users
    • Revisit Users URL to verify that users are approved (i.e. Users with ID 1 and 2 are approved.)
  • Check the Temporal Web UI for details on workflow execution at `http://localhost:8088' (Replace localhost with Docker IP if needed)