126 lines
5.2 KiB
C#
126 lines
5.2 KiB
C#
// Copyright 2016-2019, Pulumi Corporation
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using System;
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using System.Collections.Generic;
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namespace Pulumi
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{
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public partial class ResourceOptions
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{
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/// <summary>
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/// Takes two ResourceOptions values and produces a new ResourceOptions with the respective
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/// properties of <paramref name="options2"/> merged over the same properties in <paramref
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/// name="options1"/>. The original options objects will be unchanged.
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/// <para/>
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/// A new instance will always be returned.
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/// <para/>
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/// Conceptually property merging follows these basic rules:
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/// <list type="number">
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/// <item>
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/// If the property is a collection, the final value will be a collection containing the
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/// values from each options object.
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/// </item>
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/// <item>
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/// Simple scaler values from <paramref name="options2"/> (i.e. <see cref="string"/>s,
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/// <see cref="int"/>s, <see cref="bool"/>s) will replace the values of <paramref
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/// name="options1"/>.
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/// </item>
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/// <item>
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/// <see langword="null"/> values in <paramref name="options2"/> will be ignored.
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/// </item>
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/// </list>
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/// </summary>
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public static ResourceOptions Merge(ResourceOptions? options1, ResourceOptions? options2)
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{
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options1 ??= new ResourceOptions();
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options2 ??= new ResourceOptions();
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if ((options1 is CustomResourceOptions && options2 is ComponentResourceOptions) ||
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(options1 is ComponentResourceOptions && options2 is CustomResourceOptions))
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{
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throw new ArgumentException(
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$"Cannot merge a {nameof(CustomResourceOptions)} and {nameof(ComponentResourceOptions)} together.");
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}
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// make an appropriate copy of both options bag, then the copy of options2 into the copy
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// of options1 and return the copy of options1.
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if (options1 is CustomResourceOptions || options2 is CustomResourceOptions)
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{
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return MergeCustomOptions(
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CreateCustomResourceOptionsCopy(options1),
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CreateCustomResourceOptionsCopy(options2));
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}
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else if (options1 is ComponentResourceOptions || options2 is ComponentResourceOptions)
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{
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return MergeComponentOptions(
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CreateComponentResourceOptionsCopy(options1),
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CreateComponentResourceOptionsCopy(options2));
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}
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else
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{
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return MergeNormalOptions(
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CreateResourceOptionsCopy(options1),
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CreateResourceOptionsCopy(options2));
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}
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static ResourceOptions MergeNormalOptions(ResourceOptions options1, ResourceOptions options2)
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{
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options1.Id = options2.Id ?? options1.Id;
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options1.Parent = options2.Parent ?? options1.Parent;
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options1.Protect = options2.Protect ?? options1.Protect;
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options1.Version = options2.Version ?? options1.Version;
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options1.Provider = options2.Provider ?? options1.Provider;
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options1.CustomTimeouts = options2.CustomTimeouts ?? options1.CustomTimeouts;
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options1.IgnoreChanges.AddRange(options2.IgnoreChanges);
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options1.ResourceTransformations.AddRange(options2.ResourceTransformations);
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options1.Aliases.AddRange(options2.Aliases);
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options1.DependsOn = options1.DependsOn.Concat(options2.DependsOn);
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return options1;
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}
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static CustomResourceOptions MergeCustomOptions(CustomResourceOptions options1, CustomResourceOptions options2)
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{
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// first, merge all the normal option values over
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MergeNormalOptions(options1, options2);
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options1.DeleteBeforeReplace = options2.DeleteBeforeReplace ?? options1.DeleteBeforeReplace;
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options1.ImportId = options2.ImportId ?? options1.ImportId;
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options1.AdditionalSecretOutputs.AddRange(options2.AdditionalSecretOutputs);
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return options1;
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}
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static ComponentResourceOptions MergeComponentOptions(ComponentResourceOptions options1, ComponentResourceOptions options2)
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{
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ExpandProviders(options1);
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ExpandProviders(options2);
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// first, merge all the normal option values over
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MergeNormalOptions(options1, options2);
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options1.Providers.AddRange(options2.Providers);
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if (options1.Providers.Count == 1)
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{
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options1.Provider = options1.Providers[0];
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options1.Providers.Clear();
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}
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return options1;
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}
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static void ExpandProviders(ComponentResourceOptions options)
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{
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if (options.Provider != null)
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{
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options.Providers = new List<ProviderResource> { options.Provider };
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options.Provider = null;
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}
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}
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}
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}
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}
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