59 lines
1.8 KiB
Go
59 lines
1.8 KiB
Go
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package config
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// Append appends one configuration to another.
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//
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// Append assumes that both configurations will not have
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// conflicting variables, resources, etc. If they do, the
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// problems will be caught in the validation phase.
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//
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// It is possible that c1, c2 on their own are not valid. For
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// example, a resource in c2 may reference a variable in c1. But
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// together, they would be valid.
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func Append(c1, c2 *Config) (*Config, error) {
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c := new(Config)
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// Append unknown keys, but keep them unique since it is a set
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unknowns := make(map[string]struct{})
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for _, k := range c1.unknownKeys {
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unknowns[k] = struct{}{}
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}
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for _, k := range c2.unknownKeys {
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unknowns[k] = struct{}{}
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}
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for k, _ := range unknowns {
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c.unknownKeys = append(c.unknownKeys, k)
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}
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if len(c1.Outputs) > 0 || len(c2.Outputs) > 0 {
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c.Outputs = make(
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[]*Output, 0, len(c1.Outputs)+len(c2.Outputs))
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c.Outputs = append(c.Outputs, c1.Outputs...)
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c.Outputs = append(c.Outputs, c2.Outputs...)
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}
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if len(c1.ProviderConfigs) > 0 || len(c2.ProviderConfigs) > 0 {
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c.ProviderConfigs = make(
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[]*ProviderConfig,
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0, len(c1.ProviderConfigs)+len(c2.ProviderConfigs))
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c.ProviderConfigs = append(c.ProviderConfigs, c1.ProviderConfigs...)
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c.ProviderConfigs = append(c.ProviderConfigs, c2.ProviderConfigs...)
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}
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if len(c1.Resources) > 0 || len(c2.Resources) > 0 {
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c.Resources = make(
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[]*Resource,
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0, len(c1.Resources)+len(c2.Resources))
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c.Resources = append(c.Resources, c1.Resources...)
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c.Resources = append(c.Resources, c2.Resources...)
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}
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if len(c1.Variables) > 0 || len(c2.Variables) > 0 {
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c.Variables = make(
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[]*Variable, 0, len(c1.Variables)+len(c2.Variables))
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c.Variables = append(c.Variables, c1.Variables...)
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c.Variables = append(c.Variables, c2.Variables...)
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}
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return c, nil
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}
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