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7c8efe103e
Some of the fields in our config structs are either mandatory in primary files or there is a default value that we apply if absent. Unfortunately override files impose the additional constraint that we be allowed to omit required fields (which have presumably already been set in the primary files) and that we are able to distinguish between a default value and omitting a value entirely. Since most of our fields were already acceptable for override files, here we just add some new fields to deal with the few cases where special handling is required and a helper function to disable the "Required" flag on attributes in a given schema.
102 lines
2.1 KiB
Go
102 lines
2.1 KiB
Go
package configs
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import (
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"github.com/hashicorp/hcl2/gohcl"
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"github.com/hashicorp/hcl2/hcl"
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"github.com/hashicorp/hcl2/hcl/hclsyntax"
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)
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// ModuleCall represents a "module" block in a module or file.
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type ModuleCall struct {
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Name string
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SourceAddr string
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SourceAddrRange hcl.Range
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SourceSet bool
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Config hcl.Body
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Version VersionConstraint
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Count hcl.Expression
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ForEach hcl.Expression
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DependsOn []hcl.Traversal
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DeclRange hcl.Range
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}
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func decodeModuleBlock(block *hcl.Block, override bool) (*ModuleCall, hcl.Diagnostics) {
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mc := &ModuleCall{
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Name: block.Labels[0],
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DeclRange: block.DefRange,
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}
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schema := moduleBlockSchema
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if override {
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schema = schemaForOverrides(schema)
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}
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content, remain, diags := block.Body.PartialContent(schema)
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mc.Config = remain
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if !hclsyntax.ValidIdentifier(mc.Name) {
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diags = append(diags, &hcl.Diagnostic{
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Severity: hcl.DiagError,
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Summary: "Invalid module instance name",
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Detail: badIdentifierDetail,
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Subject: &block.LabelRanges[0],
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})
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}
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if attr, exists := content.Attributes["source"]; exists {
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valDiags := gohcl.DecodeExpression(attr.Expr, nil, &mc.SourceAddr)
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diags = append(diags, valDiags...)
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mc.SourceAddrRange = attr.Expr.Range()
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mc.SourceSet = true
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}
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if attr, exists := content.Attributes["version"]; exists {
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var versionDiags hcl.Diagnostics
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mc.Version, versionDiags = decodeVersionConstraint(attr)
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diags = append(diags, versionDiags...)
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}
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if attr, exists := content.Attributes["count"]; exists {
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mc.Count = attr.Expr
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}
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if attr, exists := content.Attributes["for_each"]; exists {
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mc.ForEach = attr.Expr
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}
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if attr, exists := content.Attributes["depends_on"]; exists {
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deps, depsDiags := decodeDependsOn(attr)
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diags = append(diags, depsDiags...)
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mc.DependsOn = append(mc.DependsOn, deps...)
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}
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return mc, diags
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}
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var moduleBlockSchema = &hcl.BodySchema{
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Attributes: []hcl.AttributeSchema{
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{
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Name: "source",
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Required: true,
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},
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{
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Name: "version",
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},
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{
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Name: "count",
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},
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{
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Name: "for_each",
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},
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{
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Name: "depends_on",
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},
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},
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}
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