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tobool(v) converts v to a boolean. The string "true" becomes true, and "false" becomes false. Boolean values pass through unchanged.

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Signature

tobool(v any) bool

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Example

Read a feature flag from the environment as a string and use it as a boolean condition: 
computed "run_migrations" {
  description = "Whether to run database migrations in this deploy"
  expression  = tobool(env("RUN_MIGRATIONS", "true"))
}

task "migrate" {
  description = "Run database migrations"
  condition   = computed.run_migrations
  commands    = ["./bin/migrate up"]
}

task "deploy" {
  description = "Deploy the application"
  depends_on  = [task.migrate]
  commands    = ["kubectl rollout restart deployment/app"]
}
Setting RUN_MIGRATIONS=false in the environment skips the migration task.

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Notes

  • Only the strings "true" and "false" are valid inputs. Any other string causes an error.
  • tobool is most useful when a value comes from an environment variable or CLI flag that is inherently a string.