merge

merge(maps... map) map

variable "env" {
  description = "Target environment"
  type        = string
  default     = "staging"
}

computed "config" {
  description = "Merged environment configuration"
  expression  = merge(
    {
      LOG_LEVEL    = "info"
      CACHE_TTL    = "300"
      MAX_WORKERS  = "4"
    },
    var.env == "production" ? {
      LOG_LEVEL   = "warn"
      MAX_WORKERS = "16"
    } : {}
  )
}

task "run" {
  description = "Start the application with the merged config"
  commands = [
    "LOG_LEVEL=${computed.config["LOG_LEVEL"]} MAX_WORKERS=${computed.config["MAX_WORKERS"]} ./bin/app",
  ]
}