Support files for terraform-providers/terraform-provider-google PR

01-migrate_test.sh

#!/usr/bin/env bash

GCP_PROJECT="<REDACTED>"

function write_provider {
    version=$1

    cat > provider.tf << EOF
provider "google" {
  project = "$GCP_PROJECT"
  region  = "us-central1"
  version = "~> $version"
}
EOF
}

function write_provider_no_version {
    cat > provider.tf << EOF
provider "google" {
  project = "$GCP_PROJECT"
  region  = "us-central1"
}
EOF
}

function bigtable_conf_1_cluster {
    read -r -d '' bigtable_conf << EOF
resource "google_bigtable_instance" "test_instance" {
  name = "test-instance"

  cluster {
    cluster_id   = "cluster1"
    zone         = "us-central1-a"
    num_nodes    = 3
    storage_type = "SSD"
  }
}
EOF
}

function bigtable_conf_4_clusters {
    read -r -d '' bigtable_conf << EOF
resource "google_bigtable_instance" "test_instance" {
  name = "test-instance"

  cluster {
    cluster_id   = "cluster1"
    zone         = "us-central1-a"
    num_nodes    = 3
    storage_type = "SSD"
  }
  cluster {
    cluster_id   = "cluster2"
    zone         = "us-central1-a"
    num_nodes    = 3
    storage_type = "SSD"
  }
  cluster {
    cluster_id   = "cluster3"
    zone         = "us-central1-a"
    num_nodes    = 3
    storage_type = "SSD"
  }
  cluster {
    cluster_id   = "cluster4"
    zone         = "us-central1-a"
    num_nodes    = 3
    storage_type = "SSD"
  }
}
EOF
}

function save_state {
    filename=$1

    terraform state pull | jq '.modules[0].resources."google_bigtable_instance.test_instance"' > output/$filename
}

function run_test {
    version=$1
    filename_part=$2

    echo "===== Running $filename_part test for v${version} ====="

    if [[ $filename_part == "1cluster" ]]; then
        bigtable_conf_1_cluster
    else
        bigtable_conf_4_clusters
    fi
    
    created_file_name=${version}_${filename_part}_created.json
    migrated_file_name=${version}_${filename_part}_migrated.json
    diff_file_name=${version}_${filename_part}.json.diff

    echo "----- Initializing provider version -----"
    write_provider $version
    terraform init -backend-config=backend.conf
    echo "----- Creating instance -----"
    echo "$bigtable_conf" > bigtable.tf
    terraform apply -auto-approve
    echo "----- Saving state -----"
    save_state $created_file_name
    echo "----- Switching to local provider build -----"
    rm .terraform/plugins/darwin_amd64/terraform-provider-google_v${version}_x4
    write_provider_no_version
    terraform init -backend-config=backend.conf
    echo "----- Migrating state -----"
    terraform apply
    echo "----- Saving state -----"
    save_state $migrated_file_name
    echo "----- Deleting instance -----"
    rm bigtable.tf
    terraform apply -auto-approve
    echo "----- Writing diff file -----"
    diff output/$created_file_name output/$migrated_file_name > output/$diff_file_name
}

function run_test_for_latest {
    filename_part=$1

    echo "===== Running $filename_part test for latest build ====="

    if [[ $filename_part == "1cluster" ]]; then
        bigtable_conf_1_cluster
    else
        bigtable_conf_4_clusters
    fi
    
    created_file_name=latest_${filename_part}_created.json

    echo "----- Switching to local provider build -----"
    plugin_file_glob=.terraform/plugins/darwin_amd64/terraform-provider-google_v*
    if [[ -f $plugin_file_glob ]]; then
        rm $plugin_file_glob
    fi
    write_provider_no_version
    terraform init -backend-config=backend.conf
    echo "----- Creating instance -----"
    echo "$bigtable_conf" > bigtable.tf
    terraform apply -auto-approve
    echo "----- Saving state -----"
    save_state $created_file_name
    echo "----- Deleting instance -----"
    rm bigtable.tf
    terraform apply -auto-approve
}

if [[ ! -d output ]]; then
    mkdir output
fi

run_test 1.19.1 1cluster

for version in 2.13.0 2.14.0 2.15.0 2.16.0; do
    for clusters in 1cluster 4clusters; do
        run_test $version $clusters
    done
done

for clusters in 1cluster 4clusters; do
    run_test_for_latest $clusters
done

02-1.19.1_1cluster.json.diff

8,12c8,11
<       "cluster.3909609229.cluster_id": "cluster1",
<       "cluster.3909609229.num_nodes": "3",
<       "cluster.3909609229.storage_type": "SSD",
<       "cluster.3909609229.zone": "us-central1-a",
<       "cluster_id": "",
---
>       "cluster.0.cluster_id": "cluster1",
>       "cluster.0.num_nodes": "3",
>       "cluster.0.storage_type": "SSD",
>       "cluster.0.zone": "us-central1-a",
17,20c16,19
<       "num_nodes": "0",
<       "project": "<REDACTED>",
<       "storage_type": "SSD",
<       "zone": ""
---
>       "project": "<REDACTED>"
>     },
>     "meta": {
>       "schema_version": "1"
22d20
<     "meta": {},

03-2.13.0_1cluster.json.diff

8,11c8,11
<       "cluster.3909609229.cluster_id": "cluster1",
<       "cluster.3909609229.num_nodes": "3",
<       "cluster.3909609229.storage_type": "SSD",
<       "cluster.3909609229.zone": "us-central1-a",
---
>       "cluster.0.cluster_id": "cluster1",
>       "cluster.0.num_nodes": "3",
>       "cluster.0.storage_type": "SSD",
>       "cluster.0.zone": "us-central1-a",
18c18,20
<     "meta": {},
---
>     "meta": {
>       "schema_version": "1"
>     },

04-2.13.0_4clusters.json.diff

8,23c8,23
<       "cluster.274830331.cluster_id": "cluster4",
<       "cluster.274830331.num_nodes": "3",
<       "cluster.274830331.storage_type": "SSD",
<       "cluster.274830331.zone": "us-central1-a",
<       "cluster.3190147935.cluster_id": "cluster2",
<       "cluster.3190147935.num_nodes": "3",
<       "cluster.3190147935.storage_type": "SSD",
<       "cluster.3190147935.zone": "us-central1-a",
<       "cluster.3909609229.cluster_id": "cluster1",
<       "cluster.3909609229.num_nodes": "3",
<       "cluster.3909609229.storage_type": "SSD",
<       "cluster.3909609229.zone": "us-central1-a",
<       "cluster.974443182.cluster_id": "cluster3",
<       "cluster.974443182.num_nodes": "3",
<       "cluster.974443182.storage_type": "SSD",
<       "cluster.974443182.zone": "us-central1-a",
---
>       "cluster.0.cluster_id": "cluster1",
>       "cluster.0.num_nodes": "3",
>       "cluster.0.storage_type": "SSD",
>       "cluster.0.zone": "us-central1-a",
>       "cluster.1.cluster_id": "cluster3",
>       "cluster.1.num_nodes": "3",
>       "cluster.1.storage_type": "SSD",
>       "cluster.1.zone": "us-central1-a",
>       "cluster.2.cluster_id": "cluster2",
>       "cluster.2.num_nodes": "3",
>       "cluster.2.storage_type": "SSD",
>       "cluster.2.zone": "us-central1-a",
>       "cluster.3.cluster_id": "cluster4",
>       "cluster.3.num_nodes": "3",
>       "cluster.3.storage_type": "SSD",
>       "cluster.3.zone": "us-central1-a",
30c30,32
<     "meta": {},
---
>     "meta": {
>       "schema_version": "1"
>     },

05-all_others.json.diff

18c18,20
<     "meta": {},
---
>     "meta": {
>       "schema_version": "1"
>     },

06-latest_1cluster_created.json

{
  "type": "google_bigtable_instance",
  "depends_on": [],
  "primary": {
    "id": "test-instance",
    "attributes": {
      "cluster.#": "1",
      "cluster.0.cluster_id": "cluster1",
      "cluster.0.num_nodes": "3",
      "cluster.0.storage_type": "SSD",
      "cluster.0.zone": "us-central1-a",
      "display_name": "test-instance",
      "id": "test-instance",
      "instance_type": "PRODUCTION",
      "name": "test-instance",
      "project": "<REDACTED>"
    },
    "meta": {
      "schema_version": "1"
    },
    "tainted": false
  },
  "deposed": [],
  "provider": "provider.google"
}

07-latest_4clusters_created.json

{
  "type": "google_bigtable_instance",
  "depends_on": [],
  "primary": {
    "id": "test-instance",
    "attributes": {
      "cluster.#": "4",
      "cluster.0.cluster_id": "cluster1",
      "cluster.0.num_nodes": "3",
      "cluster.0.storage_type": "SSD",
      "cluster.0.zone": "us-central1-a",
      "cluster.1.cluster_id": "cluster2",
      "cluster.1.num_nodes": "3",
      "cluster.1.storage_type": "SSD",
      "cluster.1.zone": "us-central1-a",
      "cluster.2.cluster_id": "cluster3",
      "cluster.2.num_nodes": "3",
      "cluster.2.storage_type": "SSD",
      "cluster.2.zone": "us-central1-a",
      "cluster.3.cluster_id": "cluster4",
      "cluster.3.num_nodes": "3",
      "cluster.3.storage_type": "SSD",
      "cluster.3.zone": "us-central1-a",
      "display_name": "test-instance",
      "id": "test-instance",
      "instance_type": "PRODUCTION",
      "name": "test-instance",
      "project": "<REDACTED>"
    },
    "meta": {
      "schema_version": "1"
    },
    "tainted": false
  },
  "deposed": [],
  "provider": "provider.google"
}