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479c6b2466
The "config" package is no longer used and will be removed as part of the 0.12 release cleanup. Since configschema is part of the "new world" of configuration modelling, it makes more sense for it to live as a subdirectory of the newer "configs" package.
56 lines
1.3 KiB
Go
56 lines
1.3 KiB
Go
package terraform
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import (
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"github.com/hashicorp/terraform/addrs"
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"github.com/hashicorp/terraform/configs/configschema"
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"github.com/hashicorp/terraform/dag"
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)
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// ResourceCountTransformer is a GraphTransformer that expands the count
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// out for a specific resource.
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//
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// This assumes that the count is already interpolated.
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type ResourceCountTransformer struct {
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Concrete ConcreteResourceInstanceNodeFunc
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Schema *configschema.Block
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// Count is either the number of indexed instances to create, or -1 to
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// indicate that count is not set at all and thus a no-key instance should
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// be created.
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Count int
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Addr addrs.AbsResource
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}
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func (t *ResourceCountTransformer) Transform(g *Graph) error {
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if t.Count < 0 {
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// Negative count indicates that count is not set at all.
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addr := t.Addr.Instance(addrs.NoKey)
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abstract := NewNodeAbstractResourceInstance(addr)
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abstract.Schema = t.Schema
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var node dag.Vertex = abstract
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if f := t.Concrete; f != nil {
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node = f(abstract)
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}
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g.Add(node)
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return nil
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}
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// For each count, build and add the node
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for i := 0; i < t.Count; i++ {
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key := addrs.IntKey(i)
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addr := t.Addr.Instance(key)
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abstract := NewNodeAbstractResourceInstance(addr)
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var node dag.Vertex = abstract
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if f := t.Concrete; f != nil {
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node = f(abstract)
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}
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g.Add(node)
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}
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return nil
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}
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