import * as pulumi from "@pulumi/pulumi";
import * as inputs from "../types/input";
import * as outputs from "../types/output";
/**
 * This resource can be useful for getting back a set of subnet IDs.
 *
 * ## Example Usage
 *
 * The following shows outputting all CIDR blocks for every subnet ID in a VPC.
 *
 * ```typescript
 * import * as pulumi from "@pulumi/pulumi";
 * import * as aws from "@pulumi/aws";
 * import * as std from "@pulumi/std";
 *
 * const example = aws.ec2.getSubnets({
 *     filters: [{
 *         name: "vpc-id",
 *         values: [vpcId],
 *     }],
 * });
 * const exampleGetSubnet = example.then(example => std.toset({
 *     input: example.ids,
 * })).then(invoke => .reduce((__obj, [__key, __value]) => ({ ...__obj, [String(__key)]: aws.ec2.getSubnet({
 *     id: __value,
 * }) }), {}));
 * export const subnetCidrBlocks = exampleGetSubnet.apply(exampleGetSubnet => Object.values(exampleGetSubnet).map(s => (s.cidrBlock)));
 * ```
 *
 * The following example retrieves a set of all subnets in a VPC with a custom
 * tag of `Tier` set to a value of "Private" so that the `aws.ec2.Instance` resource
 * can loop through the subnets, putting instances across availability zones.
 *
 * ```typescript
 * import * as pulumi from "@pulumi/pulumi";
 * import * as aws from "@pulumi/aws";
 *
 * export = async () => {
 *     const _private = await aws.ec2.getSubnets({
 *         filters: [{
 *             name: "vpc-id",
 *             values: [vpcId],
 *         }],
 *         tags: {
 *             Tier: "Private",
 *         },
 *     });
 *     const app: aws.ec2.Instance[] = [];
 *     for (const range of Object.entries(.reduce((__obj, entry) => ({ ...__obj, [entry]: entry }), {})).sort().map(([k, v]) => ({key: k, value: v}))) {
 *         app.push(new aws.ec2.Instance(`app-${range.key}`, {
 *             ami: ami,
 *             instanceType: aws.ec2.InstanceType.T2_Micro,
 *             subnetId: range.value,
 *         }));
 *     }
 * }
 * ```
 */
export declare function getSubnets(args?: GetSubnetsArgs, opts?: pulumi.InvokeOptions): Promise<GetSubnetsResult>;
/**
 * A collection of arguments for invoking getSubnets.
 */
export interface GetSubnetsArgs {
    /**
     * Custom filter block as described below.
     */
    filters?: inputs.ec2.GetSubnetsFilter[];
    /**
     * Region where this resource will be [managed](https://docs.aws.amazon.com/general/latest/gr/rande.html#regional-endpoints). Defaults to the Region set in the provider configuration.
     */
    region?: string;
    /**
     * Map of tags, each pair of which must exactly match
     * a pair on the desired subnets.
     */
    tags?: {
        [key: string]: string;
    };
}
/**
 * A collection of values returned by getSubnets.
 */
export interface GetSubnetsResult {
    readonly filters?: outputs.ec2.GetSubnetsFilter[];
    /**
     * The provider-assigned unique ID for this managed resource.
     */
    readonly id: string;
    /**
     * List of all the subnet ids found.
     */
    readonly ids: string[];
    readonly region: string;
    readonly tags: {
        [key: string]: string;
    };
}
/**
 * This resource can be useful for getting back a set of subnet IDs.
 *
 * ## Example Usage
 *
 * The following shows outputting all CIDR blocks for every subnet ID in a VPC.
 *
 * ```typescript
 * import * as pulumi from "@pulumi/pulumi";
 * import * as aws from "@pulumi/aws";
 * import * as std from "@pulumi/std";
 *
 * const example = aws.ec2.getSubnets({
 *     filters: [{
 *         name: "vpc-id",
 *         values: [vpcId],
 *     }],
 * });
 * const exampleGetSubnet = example.then(example => std.toset({
 *     input: example.ids,
 * })).then(invoke => .reduce((__obj, [__key, __value]) => ({ ...__obj, [String(__key)]: aws.ec2.getSubnet({
 *     id: __value,
 * }) }), {}));
 * export const subnetCidrBlocks = exampleGetSubnet.apply(exampleGetSubnet => Object.values(exampleGetSubnet).map(s => (s.cidrBlock)));
 * ```
 *
 * The following example retrieves a set of all subnets in a VPC with a custom
 * tag of `Tier` set to a value of "Private" so that the `aws.ec2.Instance` resource
 * can loop through the subnets, putting instances across availability zones.
 *
 * ```typescript
 * import * as pulumi from "@pulumi/pulumi";
 * import * as aws from "@pulumi/aws";
 *
 * export = async () => {
 *     const _private = await aws.ec2.getSubnets({
 *         filters: [{
 *             name: "vpc-id",
 *             values: [vpcId],
 *         }],
 *         tags: {
 *             Tier: "Private",
 *         },
 *     });
 *     const app: aws.ec2.Instance[] = [];
 *     for (const range of Object.entries(.reduce((__obj, entry) => ({ ...__obj, [entry]: entry }), {})).sort().map(([k, v]) => ({key: k, value: v}))) {
 *         app.push(new aws.ec2.Instance(`app-${range.key}`, {
 *             ami: ami,
 *             instanceType: aws.ec2.InstanceType.T2_Micro,
 *             subnetId: range.value,
 *         }));
 *     }
 * }
 * ```
 */
export declare function getSubnetsOutput(args?: GetSubnetsOutputArgs, opts?: pulumi.InvokeOutputOptions): pulumi.Output<GetSubnetsResult>;
/**
 * A collection of arguments for invoking getSubnets.
 */
export interface GetSubnetsOutputArgs {
    /**
     * Custom filter block as described below.
     */
    filters?: pulumi.Input<pulumi.Input<inputs.ec2.GetSubnetsFilterArgs>[] | undefined>;
    /**
     * Region where this resource will be [managed](https://docs.aws.amazon.com/general/latest/gr/rande.html#regional-endpoints). Defaults to the Region set in the provider configuration.
     */
    region?: pulumi.Input<string | undefined>;
    /**
     * Map of tags, each pair of which must exactly match
     * a pair on the desired subnets.
     */
    tags?: pulumi.Input<{
        [key: string]: pulumi.Input<string>;
    } | undefined>;
}
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