cloud-foundation-fabric/fast/stages/0-bootstrap/identity-providers.tf

97 lines
4.2 KiB
HCL

/**
* Copyright 2022 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
# tfdoc:file:description Workload Identity Federation provider definitions.
locals {
identity_providers = {
for k, v in var.federated_identity_providers : k => merge(
v,
lookup(local.identity_providers_defs, v.issuer, {})
)
}
identity_providers_defs = {
# https://docs.github.com/en/actions/deployment/security-hardening-your-deployments/about-security-hardening-with-openid-connect
github = {
attribute_mapping = {
"google.subject" = "assertion.sub"
"attribute.sub" = "assertion.sub"
"attribute.actor" = "assertion.actor"
"attribute.repository" = "assertion.repository"
"attribute.repository_owner" = "assertion.repository_owner"
"attribute.ref" = "assertion.ref"
}
issuer_uri = "https://token.actions.githubusercontent.com"
principal_tpl = "principal://iam.googleapis.com/%s/subject/repo:%s:ref:refs/heads/%s"
principalset_tpl = "principalSet://iam.googleapis.com/%s/attribute.repository/%s"
}
# https://docs.gitlab.com/ee/ci/cloud_services/index.html#how-it-works
gitlab = {
attribute_mapping = {
"google.subject" = "assertion.sub"
"attribute.sub" = "assertion.sub"
"attribute.environment" = "assertion.environment"
"attribute.environment_protected" = "assertion.environment_protected"
"attribute.namespace_id" = "assertion.namespace_id"
"attribute.namespace_path" = "assertion.namespace_path"
"attribute.pipeline_id" = "assertion.pipeline_id"
"attribute.pipeline_source" = "assertion.pipeline_source"
"attribute.project_id" = "assertion.project_id"
"attribute.project_path" = "assertion.project_path"
"attribute.repository" = "assertion.project_path"
"attribute.ref" = "assertion.ref"
"attribute.ref_protected" = "assertion.ref_protected"
"attribute.ref_type" = "assertion.ref_type"
}
allowed_audiences = ["https://gitlab.com"]
issuer_uri = "https://gitlab.com"
principal_tpl = "principalSet://iam.googleapis.com/%s/attribute.sub/project_path:%s:ref_type:branch:ref:%s"
principalset_tpl = "principalSet://iam.googleapis.com/%s/attribute.repository/%s"
}
}
}
resource "google_iam_workload_identity_pool" "default" {
provider = google-beta
count = length(local.identity_providers) > 0 ? 1 : 0
project = module.automation-project.project_id
workload_identity_pool_id = "${var.prefix}-bootstrap"
}
resource "google_iam_workload_identity_pool_provider" "default" {
provider = google-beta
for_each = local.identity_providers
project = module.automation-project.project_id
workload_identity_pool_id = (
google_iam_workload_identity_pool.default.0.workload_identity_pool_id
)
workload_identity_pool_provider_id = "${var.prefix}-bootstrap-${each.key}"
attribute_condition = each.value.attribute_condition
attribute_mapping = each.value.attribute_mapping
oidc {
allowed_audiences = (
try(each.value.custom_settings.allowed_audiences, null) != null
? each.value.custom_settings.allowed_audiences
: try(each.value.allowed_audiences, null)
)
issuer_uri = (
try(each.value.custom_settings.issuer_uri, null) != null
? each.value.custom_settings.issuer_uri
: try(each.value.issuer_uri, null)
)
}
}