Workers not auto starting in spring boot starter

[sidguptajhs]

Issue in io.temporal:temporal-spring-boot-starter-alpha:1.18.1

Expected Behavior

Workers should start and workflows should be processed.

Actual Behavior

Workflows don't execute and time out. No errors in the spring logs.

Steps to Reproduce the Problem

1. Get a spring boot starter alpha based flow working with version 1.17.0 . Use start-workers flag
2. Change version to 1.18.1 and restart application

Specifications

• Version: 1.18.1
• Platform: amd64

Spring Config

spring.temporal:
  start-workers: true
  workers:
    - task-queue: z_res_proc_int
      capacity:
        max-concurrent-workflow-task-executors: 10
        max-concurrent-activity-executors: 20
        max-concurrent-local-activity-executors: 2
        max-concurrent-workflow-task-pollers: 3
        max-concurrent-activity-task-pollers: 3
      rate-limits:
        max-worker-activities-per-second: 5.0
        max-task-queue-activities-per-second: 5.0
    - task-queue: z_hc_exec
      capacity:
        max-concurrent-workflow-task-executors: 20
        max-concurrent-activity-executors: 50
        max-concurrent-local-activity-executors: 5
        max-concurrent-workflow-task-pollers: 3
        max-concurrent-activity-task-pollers: 3
      rate-limits:
        max-worker-activities-per-second: 5.0
        max-task-queue-activities-per-second: 5.0
    - task-queue: z_infra_ops
      capacity:
        max-concurrent-workflow-task-executors: 5
        max-concurrent-activity-executors: 1
        max-concurrent-local-activity-executors: 1
        max-concurrent-workflow-task-pollers: 1
        max-concurrent-activity-task-pollers: 1
      rate-limits:
        max-worker-activities-per-second: 5.0
        max-task-queue-activities-per-second: 5.0
  workflow-cache:
      max-instances: 10
      max-threads: 10
  connection:
    target: local
  workers-auto-discovery:
    packages:
      - com.sample

[Spikhalskiy]

Since version 1.18.x ConfigurableApplicationContext.start() needs to be called for workers to auto-start. If your application has a concept of start, it's the right thing to do anyway.
https://github.com/temporalio/sdk-java/blob/master/temporal-spring-boot-autoconfigure-alpha/README.md?plain=1#L206
https://www.baeldung.com/spring-context-events#2-contextstartedevent