kosli_logical_environment data source

Fetches details of an existing Kosli logical environment. Use this data source to reference logical environments and access their aggregated physical environments.

Fetches details of an existing Kosli logical environment. Use this data source to reference logical environments and access their aggregated physical environments.

Use this data source to query existing logical environments in Kosli. This is useful for:

• Referencing metadata: Access last_modified_at timestamps and other computed attributes
• Cross-stack references: Reference logical environments created outside Terraform
• Dynamic configuration: Use existing logical environment configurations to create variants
• Validation: Verify logical environments exist before referencing them
• Monitoring: Create conditional logic based on logical environment state

Example usage

terraform {
  required_providers {
    kosli = {
      source = "kosli-dev/kosli"
    }
  }
}

# Query an existing logical environment
data "kosli_logical_environment" "production" {
  name = "production-aggregate"
}

# Use the data source to create a similar logical environment
resource "kosli_logical_environment" "staging" {
  name                  = "staging-aggregate"
  description           = "Staging version of ${data.kosli_logical_environment.production.name}"
  included_environments = data.kosli_logical_environment.production.included_environments
}

# Reference logical environment metadata
output "production_name" {
  description = "Name of the production logical environment"
  value       = data.kosli_logical_environment.production.name
}

output "production_type" {
  description = "Type of the environment (should be 'logical')"
  value       = data.kosli_logical_environment.production.type
}

output "production_description" {
  description = "Description of the production logical environment"
  value       = data.kosli_logical_environment.production.description
}

output "production_environments" {
  description = "List of physical environments included in production aggregate"
  value       = data.kosli_logical_environment.production.included_environments
}

output "production_last_modified" {
  description = "Timestamp of when production logical environment was last modified"
  value       = data.kosli_logical_environment.production.last_modified_at
}

# Count how many environments are aggregated
output "production_environment_count" {
  description = "Number of environments aggregated in production"
  value       = length(data.kosli_logical_environment.production.included_environments)
}

# Conditional logic based on aggregation
locals {
  # Check if logical environment is empty (no included environments)
  is_empty = length(data.kosli_logical_environment.production.included_environments) == 0

  # Check if it includes a specific environment
  includes_k8s = contains(
    data.kosli_logical_environment.production.included_environments,
    "production-k8s"
  )
}

output "production_is_empty" {
  description = "Whether production logical environment has no included environments"
  value       = local.is_empty
}

output "production_includes_k8s" {
  description = "Whether production aggregates a K8S environment"
  value       = local.includes_k8s
}

Type validation

This data source validates that the queried environment is of type logical. Attempting to query a physical environment will result in an error. Use the kosli_environment data source for physical environments instead.

Use cases

Reference metadata

Query logical environment metadata for monitoring or conditional logic:

data "kosli_logical_environment" "production" {
  name = "production-all"
}

output "production_last_modified" {
  value = data.kosli_logical_environment.production.last_modified_at
}

output "production_environment_count" {
  value = length(data.kosli_logical_environment.production.included_environments)
}

Create variants

Use an existing logical environment as a template for creating similar ones:

data "kosli_logical_environment" "production" {
  name = "production-all"
}

resource "kosli_logical_environment" "staging" {
  name        = "staging-all"
  description = "Staging version of ${data.kosli_logical_environment.production.name}"

  # Reuse the same environment structure
  included_environments = data.kosli_logical_environment.production.included_environments
}

Cross-stack references

Reference logical environments created in other Terraform workspaces or outside Terraform:

data "kosli_logical_environment" "shared_production" {
  name = "production-all" # Created in infrastructure workspace
}

# Use in application deployment workspace
locals {
  production_environments = data.kosli_logical_environment.shared_production.included_environments
}

Conditional logic

Create conditional logic based on logical environment configuration:

data "kosli_logical_environment" "production" {
  name = "production-all"
}

locals {
  # Check if environment is empty
  is_empty = length(data.kosli_logical_environment.production.included_environments) == 0

  # Check if it includes a specific environment
  includes_k8s = contains(
    data.kosli_logical_environment.production.included_environments,
    "production-k8s"
  )
}

Schema

Required

• name (String) The name of the logical environment to query.

Read-only

• description (String) The description of the logical environment.
• included_environments (List of String) List of physical environment names aggregated by this logical environment.
• last_modified_at (Number) Unix timestamp (with fractional seconds) of when the logical environment was last modified.
• type (String) The environment type (always logical for logical environments).