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Merge pull request #50 from SKozlovsky/feature/add-modules-autogen
Add autogen for `mig` and `mig_with_percent` modules
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‎Makefile‎

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@@ -80,6 +80,17 @@ docker_generate_docs:
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$(REGISTRY_URL)/${DOCKER_IMAGE_DEVELOPER_TOOLS}:${DOCKER_TAG_VERSION_DEVELOPER_TOOLS} \
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/bin/bash -c 'source /usr/local/bin/task_helper_functions.sh && generate_docs'
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# Generate files from autogen
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.PHONY: docker_generate
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docker_generate:
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docker run --rm -it \
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-v "$(CURDIR)":/workspace \
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$(REGISTRY_URL)/${DOCKER_IMAGE_DEVELOPER_TOOLS}:${DOCKER_TAG_VERSION_DEVELOPER_TOOLS} \
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/bin/bash -c 'source /usr/local/bin/task_helper_functions.sh && generate'
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# Alias for backwards compatibility
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.PHONY: generate_docs
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generate_docs: docker_generate_docs
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.PHONY: generate
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generate: docker_generate

‎autogen/README.md‎

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{% if mig %}
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# Managed Instance Group (MIG)
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This module is used to create a [google_compute_region_instance_group_manager](https://www.terraform.io/docs/providers/google/r/compute_region_instance_group_manager.html),
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and optionally, an autoscaler and healthchecks.
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{% else %}
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# Managed Instance Group (MIG) with percent
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This module allows you to set the percentage ratio of second version of instance template on Managed Instance Group.
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{% endif %}
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## Usage
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See the [simple example](../../examples/{{ module_name }}/simple) for a usage example.
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<!-- BEGINNING OF PRE-COMMIT-TERRAFORM DOCS HOOK -->
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<!-- END OF PRE-COMMIT-TERRAFORM DOCS HOOK -->

‎autogen/main.tf.tmpl‎

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/**
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* Copyright 2018 Google LLC
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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{{ autogeneration_note }}
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locals {
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healthchecks = concat(
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google_compute_health_check.http_healthcheck.*.self_link,
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google_compute_health_check.tcp_healthcheck.*.self_link,
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)
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distribution_policy_zones_base = {
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default = data.google_compute_zones.available.names
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user = var.distribution_policy_zones
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}
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distribution_policy_zones = local.distribution_policy_zones_base[length(var.distribution_policy_zones) == 0 ? "default" : "user"]
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}
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data "google_compute_zones" "available" {
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{% if mig %}
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project = var.project_id
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{% endif %}
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region = var.region
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}
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resource "google_compute_region_instance_group_manager" "{{ module_name }}" {
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provider = google-beta
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base_instance_name = var.hostname
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project = var.project_id
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{% if mig %}
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version {
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name = "${var.hostname}-mig-version-0"
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instance_template = var.instance_template
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}
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{% else %}
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version {
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name = "${var.hostname}-mig-version-0"
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instance_template = var.instance_template_initial_version
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}
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version {
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name = "${var.hostname}-mig-version-1"
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instance_template = var.instance_template_next_version
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target_size {
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percent = var.next_version_percent
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}
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}
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{% endif %}
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name = "${var.hostname}-{{ module_name_hr }}"
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region = var.region
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dynamic "named_port" {
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for_each = var.named_ports
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content {
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name = lookup(named_port.value, "name", null)
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port = lookup(named_port.value, "port", null)
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}
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}
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target_pools = var.target_pools
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target_size = var.autoscaling_enabled ? var.min_replicas : var.target_size
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auto_healing_policies {
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health_check = length(local.healthchecks) > 0 ? local.healthchecks[0] : ""
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initial_delay_sec = length(local.healthchecks) > 0 ? var.hc_initial_delay_sec : 0
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}
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distribution_policy_zones = local.distribution_policy_zones
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dynamic "update_policy" {
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for_each = var.update_policy
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content {
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max_surge_fixed = lookup(update_policy.value, "max_surge_fixed", null)
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max_surge_percent = lookup(update_policy.value, "max_surge_percent", null)
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max_unavailable_fixed = lookup(update_policy.value, "max_unavailable_fixed", null)
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max_unavailable_percent = lookup(update_policy.value, "max_unavailable_percent", null)
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min_ready_sec = lookup(update_policy.value, "min_ready_sec", null)
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minimal_action = update_policy.value.minimal_action
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type = update_policy.value.type
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}
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}
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lifecycle {
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create_before_destroy = true
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ignore_changes = [distribution_policy_zones]
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}
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}
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resource "google_compute_region_autoscaler" "autoscaler" {
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provider = google
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count = var.autoscaling_enabled ? 1 : 0
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name = "${var.hostname}-autoscaler"
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project = var.project_id
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{% if mig %}
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region = var.region
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{% endif %}
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target = google_compute_region_instance_group_manager.{{ module_name }}.self_link
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autoscaling_policy {
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max_replicas = var.max_replicas
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min_replicas = var.min_replicas
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cooldown_period = var.cooldown_period
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dynamic "cpu_utilization" {
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for_each = var.autoscaling_cpu
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content {
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target = lookup(cpu_utilization.value, "target", null)
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}
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}
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dynamic "metric" {
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for_each = var.autoscaling_metric
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content {
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name = lookup(metric.value, "name", null)
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target = lookup(metric.value, "target", null)
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type = lookup(metric.value, "type", null)
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}
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}
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dynamic "load_balancing_utilization" {
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for_each = var.autoscaling_lb
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content {
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target = lookup(load_balancing_utilization.value, "target", null)
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}
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}
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}
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{% if mig_with_percent %}
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depends_on = ["google_compute_region_instance_group_manager.mig_with_percent"]
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{% endif %}
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}
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resource "google_compute_health_check" "http_healthcheck" {
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provider = google
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count = var.http_healthcheck_enable ? 1 : 0
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name = "${var.hostname}-http-healthcheck"
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project = var.project_id
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check_interval_sec = var.hc_interval_sec
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timeout_sec = var.hc_timeout_sec
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healthy_threshold = var.hc_healthy_threshold
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unhealthy_threshold = var.hc_unhealthy_threshold
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http_health_check {
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request_path = var.hc_path
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port = var.hc_port
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}
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}
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resource "google_compute_health_check" "tcp_healthcheck" {
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provider = google
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count = var.tcp_healthcheck_enable ? 1 : 0
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project = var.project_id
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name = "${var.hostname}-tcp-healthcheck"
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check_interval_sec = var.hc_interval_sec
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timeout_sec = var.hc_timeout_sec
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healthy_threshold = var.hc_healthy_threshold
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unhealthy_threshold = var.hc_unhealthy_threshold
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tcp_health_check {
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port = var.hc_port
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}
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}

‎autogen/outputs.tf.tmpl‎

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/**
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* Copyright 2018 Google LLC
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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{{ autogeneration_note }}
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output "self_link" {
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description = "Self-link of managed instance group"
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value = google_compute_region_instance_group_manager.{{ module_name }}.self_link
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}
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output "instance_group" {
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description = "Instance-group url of managed instance group"
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value = google_compute_region_instance_group_manager.{{ module_name }}.instance_group
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}

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