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provider/terraform: remote state resource becomes a data source 

As a first example of a real-world data source, the pre-existing
terraform_remote_state resource is adapted to be a data source. The
original resource is shimmed to wrap the data source for backward
compatibility.
This commit is contained in:
Martin Atkins 2016-05-01 16:05:54 -07:00
parent 64d5ff2e84
commit 76fb7693b5
2 changed files with 8 additions and 15 deletions
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6
r/remote_state.html.md → d/remote_state.html.md
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@ -1,7 +1,7 @@
---
layout: "terraform"
page_title: "Terraform: terraform_remote_state"
sidebar_current: "docs-terraform-resource-remote-state"
sidebar_current: "docs-terraform-datasource-remote-state"
description: |-
Accesses state meta data from a remote backend.
---
@ -13,7 +13,7 @@ Retrieves state meta data from a remote backend
## Example Usage
```
resource "terraform_remote_state" "vpc" {
data "terraform_remote_state" "vpc" {
backend = "atlas"
config {
name = "hashicorp/vpc-prod"
@ -22,7 +22,7 @@ resource "terraform_remote_state" "vpc" {
resource "aws_instance" "foo" {
# ...
subnet_id = "${terraform_remote_state.vpc.output.subnet_id}"
subnet_id = "${data.terraform_remote_state.vpc.output.subnet_id}"
}
```

17
index.html.markdown
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@ -8,23 +8,16 @@ description: |-
# Terraform Provider
The terraform provider exposes resources to access state meta data
for Terraform outputs from shared infrastructure.
The terraform provider provides access to outputs from the Terraform state
of shared infrastructure.
The terraform provider is what we call a _logical provider_. This has no
impact on how it behaves, but conceptually it is important to understand.
The terraform provider doesn't manage any _physical_ resources; it isn't
creating servers, writing files, etc. It is used to access the outputs
of other Terraform states to be used as inputs for resources.
Examples will explain this best.
Use the navigation to the left to read about the available resources.
Use the navigation to the left to read about the available data sources.
## Example Usage
```
# Shared infrastructure state stored in Atlas
resource "terraform_remote_state" "vpc" {
data "terraform_remote_state" "vpc" {
backend = "atlas"
config {
path = "hashicorp/vpc-prod"
@ -33,6 +26,6 @@ resource "terraform_remote_state" "vpc" {
resource "aws_instance" "foo" {
# ...
subnet_id = "${terraform_remote_state.vpc.output.subnet_id}"
subnet_id = "${data.terraform_remote_state.vpc.output.subnet_id}"
}
```