/
aws.ts
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/
aws.ts
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// Copyright 2016-2018, Pulumi Corporation.
//
// 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.
// TODO[pulumi/pulumi-aws#40]: Move these to pulumi-aws.
import * as aws from "@pulumi/aws";
import * as pulumi from "@pulumi/pulumi";
// Compute the availability zones only once, and store the resulting promise.
let zones: Promise<string[]> | undefined;
// Export as a function instead of a variable so clients can pass one AZ as a promise to a resource.
export async function getAvailabilityZone(index: number, opts?: pulumi.InvokeOptions): Promise<string> {
const azs = await getAvailabilityZones(opts);
return azs[index];
}
export function getAvailabilityZones(opts?: pulumi.InvokeOptions): Promise<string[]> {
if (opts === undefined) {
// Only cache the results if 'opts' is not passed in. If there are opts, it may change the
// results and we can't necessarily reuse any previous results.
if (!zones) {
zones = aws.getAvailabilityZones(/*args:*/ undefined, { async: true }).then(r => r.names);
}
return zones;
}
return aws.getAvailabilityZones(/*args:*/ undefined, { ...opts, async: true }).then(r => r.names);
}